48 results about "Overhead valve" patented technology

A system, in certain embodiments, may include a spray coating device having a handle, a fluid head comprising a fluid valve and a trigger coupled to the fluid valve, and a quick disconnect fastener coupling the fluid head with the handle. A system, in other embodiments, may include a spray coating device having a body, a pivot joint coupled to the body, and a trigger having a lever coupled to the pivot joint. The trigger may be configured to move in a first direction. The system also may include a valve disposed in the body and movable in a second direction crosswise to the first direction, wherein the lever is configured to bias the valve in the second direction.

The invention discloses a fuel gas odorization device. The fuel gas odorization device is characterized by comprising an odorant injection nozzle, an injection switch, a check valve, an odorization valve, a pressure gauge, a pressure valve, a one-way valve A, a metering pump, an explosion-proof switch, an explosion-proof connecting box, a one-way valve B, a stop valve, a filter, an overhead valve, a liquidometer, a bottom valve, a return valve, a breather, a liquid charging valve, a liquid storage tank, a blowdown valve and a controller. According to the fuel gas odorization device, odorization is achieved mainly by pumping odorants (THT) out of the liquid storage tank and pumping the odorants (THT) in a fuel gas transmission and distribution main pipe through the micro-type diaphragm metering pump. The fuel gas odorization device has the function of manual and full-automatic switchover, and is flexible in odorization mode. To achieve the aim of accurate odorization, a flow detection device and a signal collection and transmission device are arranged in the transmission and distribution main pipe, and signals are fed back to a computer. The computer controls the odorant quantity of the metering pump according to the set odorant quantity needed by fuel gas flow per cubic meter, the odorization effect of natural gas is guaranteed, and user using safety is effectively guaranteed.

The magnetic tool has a narrow, elongate, rigid shank having a handgrip end and a selectively extendible and retractable magnet at the opposite working end. Various mechanisms are provided at the handgrip end to extend and retract the magnet. The working end of the tool may be provided with a polygonal (e.g., hexagonal, square, etc.) receptacle for the removable installation of a tool bit or square drive socket therein. The retracted magnet retains the bit or socket within the receptacle as desired. The magnetic tool is particularly well-adapted for insertion into a pushrod passage in the cylinder head of an overhead valve engine, for retracting a valve lifter away from the lobe of the camshaft to facilitate removal and replacement of the camshaft. A linear scale depth gauge may be provided, and an adjustably positionable collar may be provided to hold the tool with the lifter retracted.

The invention discloses a multi-mode two-stroke atkinson cycle internal-combustion engine with a fully overhead valve. According to two-stroke atkinson cycle, a scavenging process is offset on the basis of the two-stroke cycle, the distance of a compression stroke is reduced, and the distance of an expansion stroke is prolonged, and therefore, the atkinson cycle is realized and the balance of the internal-combustion engine is kept. On the basis of a common two-stroke internal-combustion engine, the multi-mode two-stroke atkinson cycle internal-combustion engine adopts an overhead embedded inlet valve with large gradient degree and an air cylinder head structure of a common exhaust valve, when the inlet valve is opened, the inlet valve temporarily serves as a separation board, a guiding function of a bulge on a formed top piston is utilized, so that a high-efficiency scavenging structure is realized; a fully variable valve timing mechanism is used to adjust the angle relation of the valve and a crank shaft, the opening and closing time of the inlet and outlet valve can be adjusted, and therefore, the internal-combustion engine has the following working modes: two-stroke atkinson cycle, two-stroke cycle and adjustable discharge capacity and compression ratio; and the efficiency of the internal-combustion engine is greatly improved.

A twin cylinder engine, includes a pair of cylinder members mounted to mounting surfaces of a crankcase, and cylinder heads mounted to the cylinder members. The cylinder members are modular components, which may be pre-assembled with components of the valve train as packaged units before the cylinder members are attached to the crankcase. Each cylinder member rotatably supports a cam gear which extends into the crankcase for driving engagement with the crankshaft. The cylinder members may be configured for either side valve-type (“L-head”), or overhead valve-type (“OHV”) engines, and the cylinder members may also be used in single cylinder engines.

To achieve high compression ratio and lower temperature of the exhaust poppet valve in an engine provided with a poppet valve on an extend part of a combustion chamber outside a main cylinder, disclosed is a valve cover having a cylindrical side face and upper face, an compression ring either the cylindrical side face and an inner wall of the sub cylinder, means to contact closely a bottom face of a poppet valve and the upper face of the valve cover, the upper part of the valve cover occupying most part of the combustion chamber facing with the bottom face, the valve cover moves along with the poppet valve when the poppet valve is lifted, a combination of overhead valves and the poppet valve including one intake valve and one exhaust valve, and total number of the overhead valve and poppet valve is not less than 3.

The invention relates to a pneumatic actuator of a valve, which comprises a casing and an air cylinder. The casing is provided with a connector fixedly connected with the valve, and the air cylinder is fixedly mounted on the casing. One end of a piston rod is fixedly connected with a piston in the air cylinder, and the other end of the piston rod is fixedly connected with a valve stem through a drive device in the casing. The pneumatic actuator is characterized in that a safety lock is arranged on the piston rod and is locked and controlled by signals of a pressure switch of a pressure sensorin a controlled container (digester) and signals of an off travel switch. When the internal pressure of the controlled container (digester) exceeds the set pressure or when a controlled valve is switched off, the pressure switch and the off travel switch are cut off, a lock control electromagnetic valve is powered off, a control spring pushes a lock bar to butt against the lower end face of a lock block, and the safety lock is locked to prevent the piston rod from moving and avoid error action of an overhead valve of the digester. Accordingly, the pneumatic actuator of the valve has the advantages of high control safety and reliability and the like, and is suitable to be used with the overhead valve of the pulp digester.

The invention relates to a range extender engine structure, comprising a crankcase part, a cylinder body part and a cylinder head, the crankcase part includes a left crankcase cover and a right crankcase cover, and the left crankcase cover includes a left crankcase cover body and a set of An integrated oil supply structure on the left crankcase cover body, the right crankcase cover includes a right crankcase cover body and a bearing support seat arranged on the right crankcase cover body; the cylinder body includes a cold water cavity, a sealing cover and a The cylinder liner in the cold water cavity; the engine mechanism is also provided with a chain-type air distribution device, including a crankshaft sprocket, a timing chain, a camshaft combination device, a chain tensioning device and a rocker arm. The range extender engine structure of the present invention can effectively solve the problems of crankshaft breakage and oil leakage of the existing range extender; the inner cooling fins and the large-capacity water storage space arranged in the cold water cavity can achieve better heat dissipation effect; The top-mounted gas distribution structure can greatly improve the running stability of the range extender, making the range extender engine lower in fuel consumption and longer in service life.

The invention discloses an overhead valve type water decanter which comprises an overhead valve assembly and a sliding rail assembly, and the sliding rail assembly is arranged in a water pool and extends in the depth direction of the water pool; the top valve assembly is connected with the buoy assembly; the buoy assembly is connected with the sliding rail assembly in a matched mode. And the lift pump assembly comprises a lift pump main body and a connecting hose which are connected with each other. According to the overhead valve type water decanter provided by the invention, water enters from the water surface by adopting the buoy and the overhead valve, the conditions that impurities are pumped and the bottom valve and the pipeline are blocked are effectively prevented, the overhead valve adopts a hollow ball as a sealing element, and the hollow ball floats at the top of the overhead valve and is tightly attached to the water inlet of the overhead valve, so that the situation that water cannot be pumped due to backflow of water in a hose is prevented. Meanwhile, sliding rails are adopted for fixing, the buoy device is effectively prevented from being stressed to swing in the pump operation process, the sliding rails are fixed to the lowest position of the pool, and the pool bottom is convenient to clean. And large-area popularization and application are worthy.

In a drag racing vehicle, especially one utilizing a V-block engine, valve gap measurement and adjustment, valve spring force measurement, and the like are carried out with the aid of a foot-operated switch removably connectible to a circuit that carries battery current to the vehicle's starter motor. The foot switch is provided with a cable allowing it to be positioned in either side of the vehicle. Operation of the foot switch effects rotation of the engine crankshaft and camshaft through a small angle so that each valve can be brought to a fully closed condition for measurement or adjustment.

The invention relates to an overhead valve of a pulp digester, which comprises a valve body, a valve seat, a valve stem, a ball, a bonnet, a seal part and a mounting part. The valve seat is fixedly mounted in a valve inlet passage and the ball is mounted in a floating manner. The overhead valve is characterized in that the valve seat is embedded in an annular vertical groove on the side wall of the inlet passage of the valve body to effectively prevent medium impurity entering the back of the valve seat, a seal pretension force regulator is arranged on the valve stem, the ball is pushed to besealed with the valve seat by regulating adjustable bolts of the seal pretention force regulator, and accordingly the sealing performance of the ball valve in a low-pressure state is improved. The overhead valve has the advantages of stability and reliability in running, excellent sealing performance and the like, and is suitable to be used as a control valve at a feed inlet of a batch digester in the paper making process.