25results about How to "Reduced flow area" patented technology

The application discloses a kind of gas and air mixing device and mixing method combined with injection, gas flow passage is provided in the mixing device, including gas nozzle and injection structure in sequence according to the direction of gas flow passage, the injection structure is used to carry out partial premixing with gas and be injected air, including in sequence communication suction chamber, mixing section, diffuser section, outlet section, the gas nozzle is communicated with suction chamber, outlet section is provided with swirl device for generating swirl.The application utilizes the momentum of gas jet to inject atmospheric air, carries out partial premixing in advance in injection structure, realizes the sufficient premixing of gas and be injected air before being ejected, mixing distance is short, has the effect of helping to reduce nitrogen oxides emissions generated in industrial combustion process, conforms to the development trend of environmental protection.

The device comprises an ash hopper shell, a flue is arranged on the outer side of the ash hopper shell, a plurality of hanging lug plates are symmetrically arranged on the inner walls of the two sides of the ash hopper shell, and a flow guide plate is arranged between every two corresponding hanging lug plates. According to the invention, the ash bucket structure in which the plurality of hanging lug plates and the guide plates are matched with each other is arranged in the ash bucket shell, so that a flow field can be changed by utilizing the additionally arranged guide plates, and dust in flue gas can be prevented from being directly taken out of the ash bucket shell by bypassing the flow field; moreover, due to the arrangement of the guide plate, the through-flow area of the ash bucket shell is reduced, the flow velocity of the flue gas is increased, the flue gas has a larger turn under the flow field deviation action of the guide plate, and the dust can be thrown to the bottom of the ash bucket shell to be deposited under the action of centrifugal force and gravity, so that the capture and the sedimentation of the dust are facilitated. And meanwhile, the contact area between the flue gas and the ash bucket shell is increased due to the arrangement of the guide plate, so that dust is better captured.

The valve device comprises a valve body, a valve rod, a valve element and a throttling element, the throttling element, the valve element and at least part of the valve rod are all arranged in the valve body, the throttling element is provided with a first valve port wall, the valve body is provided with a second valve port wall, and the diameter of at least part of the first valve port wall is smaller than that of the second valve port wall; the valve rod comprises a rod part and a transmission part fixed to the rod part, the transmission part protrudes out of part of the periphery of the rod part in the radial direction of the valve rod, the rod part abuts against the valve element, and the transmission part and the throttling element are spaced or abut against each other; in the valve opening state of the valve device, the valve element and the first valve port wall are spaced, the throttling piece abuts against the second valve port wall, or the valve element and the first valve port wall are spaced, the throttling piece and the second valve port wall are spaced, and the refrigerant flow of the valve device meets the requirements for small flow and large flow.

The invention relates to the technical field of filters, in particular to a high-altitude fire-fighting spray manifold filter which comprises a connector, a filter outer cylinder, a filter inner cylinder, a reset spring and a hydraulic plate, the connector with the left end located on the left side of the filter outer cylinder is fixedly installed on the inner side of the left end of the filter outer cylinder, and a limiting ring table is arranged on the inner side of the right end of the filter outer cylinder; a filter inner cylinder is arranged on the inner side of the left portion of the filter outer cylinder corresponding to the position between the connector and the limiting ring table, an installation ring groove is formed in the outer side of the right end of the filter inner cylinder, a reset spring with the right end located on the right of the filter inner cylinder is installed in the installation ring groove, and the right end of the reset spring abuts against the left side of the limiting ring table. The filtering device is reasonable and compact in structure and convenient to use, and impurities are intercepted in the filtering inner cylinder by arranging the filtering plate; by arranging the guide key block and the guide key groove, the inner filter cylinder and the outer filter cylinder are prevented from rotating in the circumferential direction, so that the inner sewage discharge hole and the outer sewage discharge hole are prevented from being staggered in the circumferential direction, and the filter has the characteristics of stability, reliability and good filter effect.

The invention discloses an air compressor radial air entraining device with the adjustable drum hole flow area, and belongs to the technical field of air compressor air entraining systems, the air compressor radial air entraining device comprises a rotating main shaft, the periphery of the rotating main shaft is sequentially sleeved with a first-stage movable disc, a drum and a second-stage movable disc, a plurality of air entraining through holes are formed in the peripheral face of the drum, and the air entraining through holes are communicated with the first-stage movable disc. A blocking piece is arranged in the drum, and the blocking piece can adjust the flow area of the drum. The device has the effect of adjusting the flow area of the drum.

The flow detection device comprises a shell, an airflow channel is arranged in the shell, and an air resistance structure is arranged in the airflow channel so that the airflow channel can be divided into an air inlet section located on one side of the air resistance structure and an air outlet section located on the other side of the air resistance structure. The air resistance structure is at least provided with a ventilation grid part in the middle area of the airflow channel, the shell is provided with a detection opening corresponding to the air inlet section and provided with a detection pipe extending into the air outlet section corresponding to the air outlet section, and the tail end of the detection pipe extends to the ventilation grid part to detect airflow passing through the ventilation grid part. The ventilation grating part is separated to form a plurality of airflow passing ports arranged in an array mode, airflow can be divided into a plurality of strands to pass through when passing through, the stability of the flow state of the airflow can be guaranteed, and the airflow can pass through the detection pipe in the air outlet section in a laminar flow state. The detection pipe can cross a viscous area close to the channel wall to directly detect the airflow in the central area of the airflow channel.

The utility model relates to the technical field of biological rotating disc sewage treatment, in particular to self-cleaning type biological rotating disc sewage treatment equipment which comprises a biochemical tank, a rotating disc device and a driving device, the biochemical tank is provided with a water inlet and a water outlet, the rotating disc device is arranged in the biochemical tank, and the rotating disc device comprises a rotating shaft and a plurality of discs arranged on the rotating shaft. The driving device is connected with the rotating shaft, the cleaning device comprises a supporting assembly and an elution assembly, the elution assembly is arranged corresponding to the interval space, the supporting assembly is used for driving the elution assembly to extend into the interval space, and the elution assembly comprises a first pressurizing baffle; therefore, the water flow in the interval space is pressurized and accelerated. The elution assembly is driven by the supporting assembly to extend into the interval space between the adjacent discs, so that the water flow in the interval space is pressurized and accelerated, the shearing force of the water flow on the biological membrane on the discs is improved, and the biological membrane is promoted to be separated from the discs.

The invention relates to the technical field of oil well pumps, in particular to a plunger type oil well pump for oil field exploitation. Comprising a pump cylinder, a fixed valve seat is detachably connected to the lower end of the pump cylinder, a fixed valve is placed in the fixed valve seat, a traveling valve seat is slidably connected to the interior of the pump cylinder in a sealed mode, a traveling valve is placed in the traveling valve seat, an installation cylinder is slidably connected to the interior of the traveling valve seat, and a lower positioning frame is fixedly connected to the inner side of the installation cylinder; the lower positioning frame makes contact with the lower portion of the traveling valve, and the mounting cylinder drives the traveling valve to move through the lower positioning frame. The installation cylinder actively controls the traveling valve to move and controls the traveling valve to actively relieve blocking of the traveling valve seat in the down-stroke period, so that when crude oil containing natural gas is extracted, the pressure difference needed by opening of the traveling valve seat is reduced, the invalid stroke generated due to gas compression is shortened, the effective liquid drainage stroke length of the plunger is prolonged, and the safety performance of the plunger is improved. And the fullness coefficient and the oil pumping efficiency of the pump are improved.

The invention discloses an air supply device with an adjustable flow area of a prewhirl blade channel of an aero-engine, and belongs to the technical field of aero-engines, the air supply device comprises a static part, a rotating part and a blade disc part, the static part comprises a fixed disc and an outer static disc, and the rotating part comprises a driving disc and an auxiliary disc; the blade disc component comprises a fixed part and a movable part, the fixed part comprises a blade disc body, a plurality of fixed blades are fixed to the peripheral face of the blade disc body and arranged along the periphery of the blade disc body at equal intervals, and the movable part comprises a plurality of movable blades. The movable blades are arranged in the circumferential direction of the blade disc body at equal intervals and correspond to the fixed blades in a one-to-one mode, blocking pieces are arranged on the side faces, close to the corresponding fixed blades, of the movable blades, and driving pieces used for driving the movable blades to rotate in the circumferential direction of the blade disc body are arranged on the fixed disc. The application has the effect of adjusting the flow area of the pre-whirl blade channel.

The utility model relates to the field of coke oven production technology, a kind of coke oven low load production heating flow control device, a kind of coke oven low load production heating flow control device, including flow orifice plate, the inside of flow orifice plate is equipped with first flow-through hole, the surface of flow orifice plate is equipped with first recess, the inside of first recess is provided with gasket, the inside of gasket is equipped with second flow-through hole, the bottom wall of first recess is equipped with glue dropping groove;The utility model is pasted gasket of specific inner diameter on minimum flow orifice plate, effectively reduces the flow area of flow orifice plate, realizes the fine adjustment of heating flow under low load condition, and the actual operation verifies that flow control precision can improve 89.96%, greatly improves the stability and uniformity of coke oven heating, simultaneously with the setting of glue dropping groove, extrusion ring, give way slot, second recess, extrusion protrusion and other structures, further guarantee the bonding strength of adhesive, sealing effect is higher, easy operation.

The utility model discloses a motor and a vehicle, the motor comprises a shell and a guide plate, the shell is provided with a cooling flow channel, a liquid inlet and a liquid outlet, the liquid inlet and the liquid outlet are communicated with the cooling flow channel and located at the two axial ends of the shell, and the guide plate is arranged in the cooling flow channel; the axial distance between every two adjacent flow guide plates adjacent to the liquid outlet is smaller than the axial distance between every two adjacent flow guide plates adjacent to the liquid inlet. Therefore, the cooling flow channel and the heat source are limited in the motor through the shell, the cooling liquid is injected into the cooling flow channel, and the multiple flow guide plates are arranged in the flowing direction of the cooling liquid, so that the flow area closer to the liquid outlet is smaller and the flow speed of the cooling liquid is higher by changing the distance between the adjacent flow guide plates. Therefore, the heat exchange efficiency between the cooling liquid close to the liquid outlet area and the heat source can be compensated, so that the cooling flow channel can uniformly dissipate heat of the motor, and the phenomenon that the cooling liquid close to the liquid outlet area is difficult to cool the motor is prevented.

The utility model relates to the field of fluid pipeline system discloses a water hammer elimination jar, including first chamber, first chamber is set up with the water inlet and outlet, second chamber is set up with pressure regulating mouth, and second chamber is used for accommodating positive pressure gas. The inlet and outlet passage is linked with first chamber and second chamber, and at least part inlet and outlet passage is formed into throttle section. The closing valve core is arranged in the inlet and outlet passage, when first chamber is filled with liquid, closes the inlet and outlet passage. The throttling device is arranged in the throttle section and can be telescopic along the axial direction of the inlet and outlet passage, when the closing valve core opens the inlet and outlet passage and the pressure in first chamber rises, the throttling device is elongated / contraction, to reduce the flow area of first inlet and outlet passage. The water hammer elimination jar can reduce the dissolution and consumption of gas, thereby avoiding the need to frequently supplement the air pressure in the water hammer elimination jar, the operation and maintenance cost are lower, and can prevent the water hammer of pressure rise.

This invention provides a vapor deposition reactor, comprising a furnace body, a container, a first inlet channel, an outlet channel, and a differential pressure regulating unit. The furnace body has a furnace cavity inside; the container is located in the furnace cavity and has a reaction chamber inside, while the furnace cavity outside the container forms a heating chamber; one end of the first inlet channel extends into the container and connects to the reaction chamber, and the other end is used to connect to an external reaction gas source; one end of the outlet channel connects the reaction chamber and the heating chamber, and the other end connects to the outside of the furnace body; the differential pressure regulating unit includes at least a first regulating unit, which is used to regulate the flow area of ​​the outlet channel.

The utility model discloses a hydraulic oil cylinder guide sleeve buffering mechanism which comprises a cylinder body, a guide sleeve is fixedly installed on the inner wall of the upper end of the cylinder body, a piston rod is movably connected to the inner wall of the guide sleeve in an attached mode, and a movable piston is fixedly installed on the outer curved surface of the lower end of the piston rod. The front sides of the upper and lower ends of the cylinder body are fixedly communicated with an upper oil port and a lower oil port in a penetrating manner; an annular oil groove is formed in the middle of the lower end of the guide sleeve, upper buffer grooves are formed in the two sides of the lower end of the guide sleeve, upper communicating openings are formed in the inner sides of the upper ends of the upper buffer grooves, upper adjusting openings are formed in the outer sides of the upper ends of the upper buffer grooves, and upper adjusting pipes fixedly communicate with the outer sides of the upper adjusting openings. The inner wall of the upper adjusting pipe is in threaded connection with an upper adjusting bolt, and the outer curved surface of the outer side of the upper adjusting bolt is in threaded connection with an upper adjusting nut used for locking and fastening the upper adjusting bolt. When the piston rod stretches out and draws back to the end point for buffering, the buffering resistance can be adjusted conveniently.

The utility model belongs to metallurgical industry steel -making production equipment technical field, especially for a tundish argon emptying device, including support rod, the front side of support rod is welded with argon tube. The utility model discloses through control motor drives screw rod reverse rotation, makes the adjustment rod drive trapezoidal block move to the direction of approaching trapezoidal groove, and the clearance between trapezoidal block and trapezoidal groove reduces, and the flow area of argon through through -hole reduces, and the flow of argon also reduces along with it, avoids because argon flow too big and leads to tundish temperature fluctuation too big, influences molten steel quality, when needing to increase argon flow, control motor drives screw rod rotation, makes the adjustment rod drive trapezoidal block move to the direction of moving away from trapezoidal groove, and the clearance between trapezoidal block and trapezoidal groove increases, and the flow area of argon through through -hole increases, makes the flow of argon increase, can more quickly discharge the air in tundish, can flexibly adjust argon flow according to actual production demand, and effectively improves the gas flow field of argon in tundish.

This utility model belongs to the field of power battery safety technology, and discloses a power battery terminal and cell with a fusible protection structure. The terminal includes a terminal body, which comprises a substrate layer and a fusible layer stacked on top of each other. The fusible layer has a hollowed-out fusible area, within which at least one cavity is formed. A high-resistivity material layer is deposited on the inner wall of the cavity. The hollowed-out fusible area of ​​the terminal body of this utility model has a cavity, and the high-resistivity material is deposited on the cavity surface. This reduces the current-carrying area of ​​the terminal and increases the terminal resistance, allowing heat to accumulate rapidly at the terminal to the material's melting point during a short circuit, quickly melting and blocking the current, thus reducing the risk of thermal runaway of the cell.

The invention relates to the technical field of rare earth extraction sealing equipment, in particular to automatic water injection water sealing equipment of a rare earth extraction production line, which comprises a water injection mechanism, a water sealing mechanism, a flow guide channel and a drainage channel, the water injection mechanism is connected with the lower part of the water tank; the water seal mechanism is connected with the stirring shaft; the flow guide channel is formed in the water injection mechanism; the drainage channel is connected between the water injection mechanism and the water tank; the conical spiral pipe capable of rotating along with the stirring shaft at the same speed rotates in the water seal inner tank, water at the bottom of the outer ring of the water seal inner tank is pumped to the upper portion of the inner ring, the water injection mechanism capable of adjusting the water injection speed along with the water surface height of the inner ring is arranged, and the water surface height of the inner ring is stabilized; the problems that due to high-speed rotation of the stirring shaft, the outer ring is high, the inner ring is low and negative pressure is formed at the position of the inner ring in sealing water in the water seal tank under the action of centrifugal force, and the sealing performance of the water seal becomes poor are solved.

The improved balance valve element and the valve with the improved balance valve element are simple in structure and convenient to open, close and adjust, the improved balance valve element comprises a valve body, a valve deck arranged on the valve body, water inlet channels, water outlet channels and a valve seat arranged between the water inlet channels, the water inlet channels and the water outlet channels are formed in the valve body, and a valve rod is arranged on the valve deck in a penetrating mode. The valve rod is provided with a valve core used for sealing the valve seat, and is characterized in that the valve core comprises a valve core body, the valve core body is arranged in a piston type sleeve manner, one end of the valve core body is provided with a valve core rod connected with the valve rod, and the other end of the valve core body is provided with a sealing cylinder sealed with the valve seat; and a labor-saving device for reducing the overflowing area so as to save the opening and closing force is arranged between the sealing cylinder and the valve core body.

This disclosure relates to a vehicle structural component and a vehicle. The vehicle structural component includes a support member disposed in the wheel area of ​​the vehicle and connected to the vehicle body. The support member includes a support member body and a protrusion disposed on the support member body. The protrusion and the support member body form a first airflow channel, which communicates with at least one airflow channel of the vehicle. The support member includes a support member body and a protrusion disposed on the support member body, the protrusion forming the first airflow channel. By providing the first airflow channel, the aerodynamic performance of the vehicle is improved. Furthermore, the first airflow channel is defined by the support member as a complete structure, which facilitates good structural stability of the first airflow channel, avoids the alignment of the first airflow channel with other structures of the vehicle, and also helps to conceal the first airflow channel.

The invention belongs to the technical field of deacidification towers, and discloses a flue gas treatment dry-process deacidification tower for tail gas ammonia escape, which comprises a tower body, the tower body comprises a top cylinder, a gas inlet pipe orifice positioned at the lower part of the tower body, and a diffusion section connected with the gas inlet pipe orifice and the top cylinder; a plurality of spiral rib plates which are distributed in the circumferential direction and spirally ascend in the axial direction are fixedly arranged on the inner wall of the diffusion section. Through coupling matching of the central spindle-shaped adjusting cone and the multistage spiral rib plates on the inner wall of the diffusion section, a spiral flow channel with a continuously variable flow section is constructed, the flow channel section shrinks along with axial descending of the spindle-shaped adjusting cone, air flow is forced to be converted into wall-attached strong rotational flow from axial flow, and the flow efficiency is improved. The problem of powder collapse caused by insufficient turbulence intensity of a diffusion section under a low-load working condition is solved, the retention time of the deacidification powder in the tower is prolonged by utilizing enhanced centrifugal force, and gas-solid contact and mixing are enhanced, so that the deacidification efficiency is stably guaranteed and the ammonia escape risk is reduced under variable working conditions.

The invention discloses a variable tumble air inlet system of an engine, which relates to the technical field of automobile engines and comprises an air inlet channel, a flow guide body and a control system. The air inlet channel is used for conveying airflow to the combustion chamber. The flow guide body is located in the air inlet channel and comprises an upstream part, a downstream part and a connection part. The downstream end of the upstream part is fixedly connected with a first rotating shaft, and the upstream end of the downstream part is fixedly connected with a second rotating shaft. The first rotating shaft and the second rotating shaft are rotationally installed on the side wall of the air inlet channel. The connecting part is located between the upstream part and the downstream part, so that the flow guide body can be in an arch shape, and the protruding direction of the arch faces the axis of the air inlet channel. The control system comprises a rotating speed sensor, an actuator and a controller. The rotating speed sensor is used for monitoring the real-time rotating speed of the engine and transmitting the rotating speed to the controller. The actuator is used for driving the first rotating shaft and the second rotating shaft to rotate. And the controller is used for controlling the action of the actuator. The requirements for torque power at different rotating speeds can be met by adjusting the actual flow passing area and changing the tumble ratio in the combustion chamber.

This utility model discloses an oil fume hood absorption device for a diaphragm production line, including a hood body with multiple strip-shaped holes, and an oil collection shell detachably connected to the lower end of the hood body. An exhaust pipe is connected to one side of the hood body, and an oil collection assembly for recovering waste oil from the flue gas is connected to the exhaust pipe. The oil collection assembly includes a conical tube connected to the exhaust pipe, with the end of the conical tube away from the exhaust pipe connected to the oil collection shell. In this utility model, by using a V-shaped hood body with strip-shaped holes, the absorption of flue gas from the side and from above can be combined, improving the absorption effect of multiple flue gas and reducing flue gas overflow. Simultaneously, the strip-shaped holes allow flue gas to pass through more easily, and significantly change the flow direction and convergence of flue gas within the hood body, reducing the accumulation of waste oil on the outer wall of the hood body and preventing accumulated oil impurities from falling onto the membrane surface.

The invention relates to the technical field of industrial torches, in particular to a self-operated lifting variable-sectional-area discharging device which comprises a torch cylinder, a gas inlet pipeline is fixedly connected to the side wall of the torch cylinder, a gas outlet inner cavity is formed in the torch cylinder, a gas collecting plate is arranged in the gas outlet inner cavity, and the gas collecting plate is fixedly mounted at the gas outlet end of the gas outlet inner cavity; a gas outlet is formed in the middle of the gas collecting plate, unorganized combustible gas needing to be discharged can enter the gas outlet inner cavity of the torch barrel through the gas inlet pipeline, then can rise to pass through a bundle of the gas collecting plate to be discharged from the gas outlet, and then is blown to the lifting gas blocking plate located on the gas outlet. The impact force of gas exhausted from the gas outlet can be increased, then the lifting gas blocking plate can be pushed to ascend, when the lifting gas blocking plate ascends, the fan-shaped moving plate can slide into the fan-shaped sliding groove, the circulation area is increased, the use requirement is met, on the contrary, the fan-shaped moving plate can be shrunk, flexibility and convenience are achieved, and automatic adjustment can be achieved according to the gas flow.

The application discloses a variable-speed filter device, which comprises a filter tank body, a water distribution plate arranged horizontally in the filter tank body, a water collecting area below the water distribution plate, a water inlet baffle and a backwashing baffle arranged vertically from the upper portion of the water distribution plate to the top of the filter tank body, a double-ring type variable-speed water distributor arranged between the water inlet baffle and the backwashing baffle, a graded pad layer arranged above the water distribution plate between the water inlet baffle and the backwashing baffle, and graded filter material arranged in the graded pad layer; a water inlet is arranged on the upper portion of one side of the filter tank body, a backwashing side flushing port is arranged on the backwashing baffle; a water inlet electric adjusting mechanism is arranged at the water inlet and used for controlling water inlet and reverse side flushing. The variable-speed filter device is more reasonable in design of filter water inlet and backwashing filter speed, more stable in water outlet, and better in cleaning and backwashing effect.

The utility model discloses an agricultural planting germination accelerating device which comprises a water pool, a germination accelerating device body is installed on the inner side of the water pool, a speed adjusting device is arranged on the outer side of the water pool, the speed adjusting device comprises an input pipe, a distribution pipe, an adjusting sleeve, an adjusting plate, an adjusting shaft, an adjusting groove and a movable shaft, the adjusting shaft and the movable shaft are installed on the adjusting plate, and one end of the movable shaft is connected with the distribution pipe; one end of the adjusting shaft is located in the adjusting groove, the adjusting groove is formed in one side of the input pipe, a locking mechanism is installed on the outer side of the distribution pipe and comprises a locking sleeve, a movable plate, a movable hole, a movable rod, a locking block, a locking spring and a locking block, the locking sleeve is installed on the outer side of the distribution pipe in a sliding mode, the movable hole is formed in the movable plate, the movable rod is connected to one side of the locking sleeve, and the locking spring is connected to the locking block. According to the device, full contact between seeds and oxygen and between the seeds and water is guaranteed, and on the basis that the oxygen conveying speed is flexibly adjusted, the stability of a structure after the conveying speed is adjusted is guaranteed.