15 results about "Valve gear" patented technology

The invention provides a fluid control device capable of suppressing the variation of the inter-shaft distance along with the rotation of a valve gear as much as possible. The fluid control device is provided with a valve gear (6) which is fixed on a shaft (4) for supporting a butterfly valve (5). An end portion of the shaft (4) is fixed to a shaft mounting hole (17) of a connecting member (16) of the valve gear (6) through an umbrella-shaped fixing portion (18). The area center of a region (A) of the shaft mounting hole (17) overlapping the umbrella-shaped fixing part (18) is positioned on a reference straight line (S) passing through the rotation center of the shaft (4), and in a fully closed state, the umbrella-shaped fixing part (18) is inserted into the umbrella-shaped fixing part (18). The magnitude of an angle ([theta] 2) formed in the closing direction by the reference straight line (S) with respect to a gear straight line (GL) passing through the center of rotation of a drive gear (8) for driving the valve gear (6) and the center of rotation of the shaft (4) is equal to or less than a movable angle ([theta] 1).

The utility model discloses a kind of longitudinal spin indoor ac metal-enclosed switchgear, including cabinet, and contact box device, valve gear, longitudinal spin isolation vacuum circuit breaker, inductance device arranged from top to bottom in cabinet, driving assembly is respectively acted on longitudinal spin isolation vacuum circuit breaker and valve gear;By longitudinal spin isolation vacuum circuit breaker and the partial stroke of valve, that is, longitudinal spin isolation vacuum circuit breaker and valve gear share a driving assembly, but the time point of valve being driven by driven assembly precedes longitudinal spin isolation vacuum circuit breaker end or later than longitudinal spin isolation vacuum circuit breaker execution.Such shortens the movement stroke of valve, reduces its space requirement in cabinet, realizes the miniaturization of longitudinal spin indoor ac metal-enclosed switchgear.

The utility model discloses a switch cabinet valve mechanism, which relates to the field of a movable door of a switch cabinet circuit break chamber and comprises two guide rods positioned at one end of the inner wall of the circuit break chamber, a guide rail fixedly mounted on the side wall of the circuit break chamber and a second fixing lug fixedly mounted at the bottom end of the inner wall of the circuit break chamber. Two movable doors are slidably installed on the outer wall of the guide rod, the two ends of one side of each movable door are connected with the guide rails through swing arm mechanisms, telescopic mechanisms are rotatably installed on the inner sides of the second fixing lugs, and the ends, away from the movable doors, of the swing arm mechanisms are connected with the telescopic mechanisms through pushing mechanisms. According to the utility model, the limiting disc, the pushing mechanism, the pushing frame in the pushing mechanism and the guide groove with the vertical groove part and the inclined groove part are arranged, so that when the circuit breaker is not completely inserted, the two movable doors are in a maximum opening state, and interference-free butt joint of an electric plug and an electric socket of the circuit breaker is ensured.

The application provides a multi-rotation valve gear box and a use method thereof, and belongs to the technical field of gear boxes. The gear box comprises a box body, a transmission shaft and a driving shaft. A driven bevel gear is arranged on the transmission shaft. An active bevel gear is arranged at one end of the driving shaft. An oil storage cavity is arranged at the end of the active bevel gear. A fixed shaft is arranged in the box body. One end of the fixed shaft extends into the oil storage cavity. An oil channel is arranged in the fixed shaft and is communicated with the oil storage cavity. A plurality of first channels are arranged on the active bevel gear and penetrate the active bevel gear in the circumferential direction. The outlet end of the first channel is located at the root of the adjacent teeth of the active bevel gear. A first oil path communicated with the inner cavity of the box body and a second oil path communicated with the oil channel are arranged on the box body. The first oil path and the second oil path are respectively connected with an opening degree control valve. In the application, the lubricating oil can be more effectively and uniformly covered on the tooth surface needing lubrication. Especially when the gear is running at high speed or bearing high load, a stable lubricating oil film can be formed, and the gear wear can be significantly reduced.

The utility model relates to a special involute spline plug gauge for high power density diesel engine gear, belongs to plug gauge technical field, specifically includes plug gauge head and handle, one side of plug gauge head is connected with handle, plug gauge head is the columnar structure, and one first spline rack is arranged on both sides of the columnar structure respectively, both sides first spline rack symmetrically sets up, two second spline racks are arranged on the other two sides of the columnar structure respectively, both sides second spline rack symmetrically sets up, first spline rack and second spline rack are same with the design parameter of diesel engine gear, the utility model can effectively improve detection accuracy and detection efficiency, and be mainly used in the detection of high power density diesel engine gear.

The utility model discloses a door interlocking device which comprises an interlocking rod, one end of the interlocking rod is provided with a hook portion used for locking the closing state of a handcart chamber door, and the handcart chamber door is provided with an interlocking bolt used for being connected with the hook portion in a clamped mode. The other end of the interlocking rod is arranged to be a transmission end used for being connected with a valve mechanism in a handcart chamber in a transmission mode, and an interlocking axis used for being fixedly connected with the handcart chamber is arranged in the middle of the interlocking rod in a hinged mode. According to the utility model, a linkage structure of the interlocking rod and the valve mechanism is arranged, when the handcart chamber door is operated to be closed to enable the handcart to be rocked into a working position, the handcart chamber door is synchronously locked through the interlocking rod, so that an operator cannot open the handcart chamber door without additional active locking operation of the operator, and the electrical five-prevention requirement is met.

The utility model discloses a power distribution equipment valve mechanism which comprises two guide rods which are symmetrically arranged, an upper valve and a lower valve which are movably arranged on the two guide rods, hard chromium layers are plated on the surfaces of the guide rods, connecting grooves are formed in the two sides of the upper valve and the two sides of the lower valve, connecting sleeves are arranged in the connecting grooves, and the upper valve and the lower valve are connected through the connecting sleeves. The connecting sleeve is connected with the two guide rods in a sleeved mode, a plurality of oil storage cavities are formed in the inner wall of the connecting sleeve in the radial direction and filled with lubricating oil, a wear-resisting ring is arranged between every two adjacent oil storage cavities, and sealing rings are arranged at the positions, close to the outlets, of the two ends of the inner wall of the connecting sleeve. The connecting sleeves are arranged on the two sides of the upper valve and the two sides of the lower valve, so that the upper valve and the lower valve are prevented from making direct contact with the guide rod, the effect of reducing friction is achieved, sliding of the valves is smoother, the clamping stagnation phenomenon is avoided, abrasion is reduced, and the service life is prolonged; and large noise generated when the upper valve and the lower valve slide is avoided.

The invention belongs to gear cutting equipment, particularly relates to the field of valve gear machining, and discloses gear cutting equipment for valve gear machining. The gear cutting equipment comprises a base, a groove is formed in one side of the upper end face of a supporting table, the top of a second sleeve penetrates through the supporting table and the groove and is connected with a rotating disc, and a square block is fixed to one side of the rotating disc; electric telescopic columns are symmetrically fixed to the two sides of the upper end face of the base, second motors are fixed to the tops of the electric telescopic columns, the tops of the second motors are connected with rotating columns, a bearing plate is fixed to one side of the upper end face of the base, and one side of the bearing plate is connected with third motors through electric telescopic rods; and the output end of the third motor is connected with the gear cutting piece. According to the gear cutting equipment for valve gear machining, the effect of automatic positioning can be achieved, positioning operation is automatic and efficient, then the rotating disc rotates to drive the valve gear to rotate, meanwhile, the gear cutting piece is close to the valve gear while rotating, and automatic gear cutting operation is facilitated.

The invention relates to a variable valve gear (200) for an internal combustion engine, having a plurality of valve groups (7-1, 7-2) with inlet and outlet valves (70-1, 70-2; 78-1; 78-2). The valve gear (200) comprises an outlet valve actuation system (5), having a common outlet valve actuation shaft (520) for actuating the outlet valves (78-1, 78-2), and separate inlet valve actuation systems (2-1, 2-2) for actuating the inlet valves (70-1, 70-2) of each valve group (7-1, 7-2). Each inlet valve actuation system (2-1, 2-2) has its own pivoting frame (80-1, 80-2), the pivoting frames being pivotal independently of one another, and the outlet valve actuation shaft (520) is rotationally coupled to the inlet valve actuation systems (2-1, 2-2).

This invention relates to an intelligent optimization system and method for the hydraulic control valve position of a layered water injection wellbore in an oilfield. The method includes constructing a hydraulic control valve opening optimization model; inputting the injection volume and wellhead pressure; inputting model parameters into the hydraulic control valve opening optimization model to output the solution result using a preset model algorithm; determining whether the solution result meets preset target conditions, wherein if the solution result meets the preset target conditions, the current solution result is output; if the solution result does not meet the preset target conditions, the initial input step is returned until a solution result that satisfies the cumulative difference error constraint between the actual injection volume and the injection volume of each layer is obtained. The solution result includes outputting one or more of the following: the minimum error value between the actual injection volume and the injection volume, the optimal hydraulic control valve position, and the actual injection volume of each layer, and the solution result takes the minimum cumulative difference between the actual injection volume and the injection volume of each layer as the objective.

A variable speed mechanism and a fluid control valve. The variable speed mechanism includes an intermediate shaft (36) fixed to a support portion (56) provided to a valve body of an electric throttle valve and arranged in parallel with a motor shaft and a valve shaft, and an intermediate gear (38) rotatably arranged to the intermediate shaft, the intermediate gear (38) having a first intermediate gear (41) engaged with a motor gear fixed to the motor shaft and a second intermediate gear (42) engaged with a valve gear fixed to the valve shaft, the first intermediate gear (41) and the second intermediate gear (42) being arranged in line along an axis direction of the intermediate shaft (36) and integrally formed, a lower end portion of the intermediate gear (38) being formed with a semispherical recessed portion (55) recessed upward with a center of an axis of the intermediate shaft (36), and an opposite surface of the support portion (56) opposite to the recessed portion (55) of the intermediate gear (38) being formed with a semispherical protruded portion (57) protruded upward with the center of the axis of the intermediate shaft (36) and supporting the recessed portion (55).

The invention discloses a valve transmission device, and relates to the technical field of blast furnace metallurgical equipment. The valve transmission device comprises a support frame; the at least two mandrels are arranged at intervals in the first direction and detachably connected to the supporting frame, the mandrels extend in the second direction, and roller assemblies are detachably arranged at the two ends of the mandrels; the at least two pulley blocks are in one-to-one correspondence with the at least two mandrels in the third direction; the two transmission ropes are wound on the roller assembly and the sliding wheel in the same direction on the two sides of the second direction of the supporting frame respectively; a driving member; the first connecting piece is connected to the two transmission ropes, and the first connecting piece is used for being connected with a valve plate of the hot blast stove; and the second connecting piece is connected to the two transmission ropes, and the second connecting piece is connected with the driving end. In the transmission chain, the core shaft is detachably connected to the supporting frame, and when the core shaft or the roller assemblies at the two ends of the core shaft are abraded, the core shaft can be replaced at any time, and other assemblies do not need to be disassembled.

The utility model belongs to the field of mechanical sealing and protection, and particularly relates to a valve gear box sealing structure with a waterproof cover, which comprises a gear box, a shaft sleeve, a valve cover and the waterproof cover, an O-shaped ring is arranged on a gear box body, the shaft sleeve is positioned at the top of the gear box, the valve cover is in threaded connection above the shaft sleeve, and the waterproof cover covers the periphery of the shaft sleeve and the valve cover. The motor is connected with the top of the gearbox; a boss is arranged in the center of the inner surface of the valve deck, and an O-shaped sealing ring is arranged on the periphery of the boss in a cushioned mode. The water inlet phenomenon of the movable shaft sleeve of the ball valve gear box is effectively solved, and long-period stable fault-free operation of the gear box is guaranteed.

The invention provides a stove control method and device. The method comprises the steps that a valve body gear set by a user is obtained, and a stove is started; judging whether ignition succeeds or not; if ignition succeeds, the fan rotating speed is determined as the first rotating speed; if the gear of the valve body changes, whether the changed gear of the valve body is effective or not is determined; if the changed gear of the valve body is effective, a position motor of the cooker is rotated based on the variable quantity of the gear of the valve body; wherein the position motor is used for controlling the air inlet amount of the stove. In the mode, after the gear of the valve body is changed, whether the changed gear of the valve body is effective or not can be further judged, so that the accuracy of the change of the gear of the valve body is ensured, and the condition of misoperation of a user is prevented; the air inlet amount of the kitchen range can be accurately controlled through the motor for additionally arranging the position of the kitchen range; the position motor of the kitchen range can be rotated based on the variable quantity of the valve body gears, so that the air volume of the kitchen range is adjusted in real time, and air volume distribution is accurately controlled.

The invention provides a control method of a gas stove, the gas stove and an intelligent cooking system, and relates to the technical field of intelligent cooking. The method comprises the following steps: igniting the gas stove at the highest gear, and starting the fan at the lowest rotating speed after successful ignition; in the operation process of the gas stove, whether the gear of the valve body is changed or not and the staying duration of the valve body on the gear are monitored, so that the rotating speed of the fan is adjusted; when the gear is reduced to be below the preset gear, the draught fan is controlled to run for a preset third duration at the highest rotating speed firstly, and then the draught fan is controlled to be closed; by presetting the corresponding relation between the valve body gear and the fan rotating speed and combining staying duration judgment and rotating speed hierarchical control, accurate adjustment of the air volume is achieved. The fan is started in a delayed manner after ignition, so that flames are prevented from being blown out; when the gear is turned down, high-speed purging is performed firstly and then closing is performed, so that backfire and fuel gas residues are effectively prevented; the response is quick, the operation is stable, the combustion efficiency and the use safety are improved, and meanwhile, the user experience is improved.