4668 results about "Butterfly valve" patented technology

The invention provides a sewage treatment aeration control system and method based on multi-parameter collaborative optimization. The method comprises the following steps: acquiring multi-sensor data of COD (Chemical Oxygen Demand), BOD5 (Biochemical Oxygen Demand), DO (Dissolved Oxygen Demand), ammonia nitrogen, ORP (Oxidation Reduction Potential), pH (Potential of Hydrogen), water inlet flow and sludge concentration of wastewater in an aeration tank by utilizing a multi-parameter sensor module; according to the dynamic correction oxygen mass transfer coefficient and the feedforward parameter, establishing a relationship between the water inlet load and aeration; calculating the air volume of an air blower and the fine adjustment value of the opening degree of a butterfly valve through a PID control algorithm and feedback parameters, and correcting the aeration quantity to obtain a total air volume target value; and adjusting the opening degree and the rotating speed of a guide vane of the air blower according to the self-adaptive PID control parameters and the corrected total air volume target value by utilizing a self-adaptive PID controller, and adjusting the opening degree of a butterfly valve according to a gradient butterfly valve adjusting strategy. The output of the air blower is optimized by adopting self-adaptive PID, and the opening degree of the butterfly valve of each biological tank is dynamically adjusted through a gradient valve adjusting strategy, so that the accurate control of the aeration rate is realized; the sewage treatment effect is ensured.

The invention relates to the technical field of butterfly valves, in particular to an eccentric butterfly valve which comprises an eccentric valve body, a butterfly valve plate, a valve rod, a movable brake block and a transmission assembly, a water flowing cavity is formed in the eccentric valve body, the valve rod is rotationally installed on the eccentric valve body, the butterfly valve plate is rotationally installed on the valve rod, a sealing ring is fixedly installed on the butterfly valve plate, and the movable brake block is fixedly installed on the sealing ring. The sealing ring is attached to the water flowing cavity, two through holes are formed in the butterfly valve plate, two movable brake blocks corresponding to the through holes are installed on the butterfly valve plate in a sliding mode, and the transmission assembly is connected with the valve rod and the movable brake blocks at the same time. The through hole is formed in the butterfly valve plate, the movable brake block corresponding to the through hole is arranged, the movable brake block is controlled to change the opening and closing state of the through hole, impact force borne by the two sides of the butterfly valve plate from liquid when the butterfly valve plate rotates to open the water flowing cavity is reduced, the service life of the butterfly valve plate is prolonged, and the maintenance frequency of the eccentric butterfly valve is reduced.

The invention relates to a control method and system for a high-precision grinding machine of an eccentric butterfly valve sealing pair and a terminal, and relates to the technical field of grinding machines. Selecting specification information of the eccentric butterfly valve is analyzed and determined according to the pressure detection information and the inclination detection value; selecting specification information based on the eccentric butterfly valve and calling a specification inclination demand value; calculating an inclination adjustment value; analyzing and determining inclination adjustment control information according to the inclination adjustment value; grinding path information is analyzed and determined according to the eccentric butterfly valve selection specification information and the inclination adjustment control information; grinding machining following control information corresponding to the grinding machining path information is determined according to the grinding machining path information; and combining the inclination adjustment control information with the grinding following control information to serve as grinding comprehensive control information, and outputting the grinding comprehensive control information to a high-precision grinding machine for grinding. The machining method has the effects that the overall machining efficiency of the sealing pair of the eccentric butterfly valve is improved, and 100% exchange is achieved.

The invention discloses a special working condition corrosion-resistant valve and relates to the technical field of valves, the special working condition corrosion-resistant valve comprises a valve body, a valve rod, a butterfly plate and a transmission device, and a valve seat containing cavity is defined by a limiting ring and a valve seat gland in the valve body on one side of the butterfly plate; a valve seat which can only slide in the axial direction of the valve body slides in the valve seat containing cavity in a sealed mode, and the whole valve seat is completely contained in the valve seat containing cavity. A metal sealing ring is fixedly installed on the outer periphery of the butterfly plate, and a valve seat sealing face matched with the metal sealing ring in a sealing mode is arranged on the inner side of the valve seat. And an elastic element is arranged between the valve seat and the valve seat gland. According to the three-eccentric butterfly valve, through the collaborative design of the three-eccentric structure, the hidden valve seat, the L-shaped fluid channel and the self-adaptive plugging assembly, the advantages of the three-eccentric butterfly valve are reserved, the defect of exposed design of a traditional valve seat is overcome through structural innovation, and it is ensured that the valve is accurate in action and reliable in sealing in the opening and closing process; and the sealing structure is particularly suitable for special working conditions with strict requirements on sealing performance and service life.

The utility model discloses a double-butterfly-valve sterile medicine transfer system, and relates to the technical field of pharmacy. Comprising a turnover medicine storage tank, a driving butterfly valve, a driven butterfly valve, a powder storage tank and a sterile liquid medicine storage bag, a discharging port of the turnover medicine storage tank is connected with the driving butterfly valve through a first connecting piece, and the driving butterfly valve is connected with the driven butterfly valve through a second connecting piece; the passive butterfly valve is connected with a feeding port of a powder storage tank through a third connecting piece, a first diaphragm valve is arranged at a discharging port of the powder storage tank, and the discharging port of the powder storage tank is connected with a sterile liquid medicine storage bag; by adopting the design of double butterfly valves, sterile connection is established between the turnover medicine storage tank and the powder storage tank, the reliability of hoop connection is high, the structure is simple, the operation complexity is low, the universality is high, the flexibility is high, and the cost is low.

The invention provides an eccentric butterfly valve performance detection method and system based on optical detection. The method comprises the steps that a first image of light transmission intensity distribution of a sealing pair structure of a bidirectional all-metal hard sealing four-eccentric butterfly valve is obtained; acquiring a reflection interference image of the structured light on the sealing pair structure according to the phase modulation structure grating light field, and performing conjoint analysis in combination with the first image to generate a contact pressure distribution matrix; based on the first image and the contact pressure distribution matrix, extracting corresponding multi-dimensional image features to generate a leakage early warning area map; space comparison is carried out on the leakage early warning area map and the floating response track of the sealing pair structure in the opening and closing process, and the corresponding floating response characteristics of the leakage early warning area in the opening and closing process are determined; and generating a butterfly valve sealing performance detection result according to the abnormal degree of the floating response characteristics. Through the implementation of the scheme, the leakage early warning area and the corresponding dynamic abnormal characteristics can be identified in advance, and the safety and the operation stability of the system are improved.

The invention discloses an exhaust butterfly valve with a sealing performance detection function, and relates to the technical field of butterfly valve detection.The exhaust butterfly valve comprises a butterfly valve body, a ventilation pipeline, a sealing detection mechanism and an anti-abrasion mechanism, the butterfly valve body is connected with the ventilation pipeline, the ventilation pipeline is connected with the sealing detection mechanism, and the ventilation pipeline is connected with the anti-abrasion mechanism; the butterfly valve body comprises a valve body, a valve seat and a sealing ring, the valve body is arranged on the ground, connecting holes are formed in the upper end and the lower end of the valve body, the valve seat is in a circular ring shape, and the valve seat is connected with the inner wall of the valve body in a fastened mode. The valve seat is arranged on one side of the valve body connecting hole.

The invention discloses a low-temperature methanol washing RTO tail gas treatment device adopting a self-circulation air cooling double-valve-plate butterfly valve, and relates to the technical field of waste gas treatment. By arranging the condensation impurity removal mechanism, when coal waste gas passes through one condensation assembly, low-temperature tail gas cleaned by the low-temperature methanol washing mechanism can flow through a plurality of heat exchange pipes in the condensation assembly at the same time, so that the temperature of the outer walls of the heat exchange pipes is rapidly reduced to be below zero DEG C; coal tar gas and water vapor flowing through the low-temperature heat exchange pipe can be quickly cooled and solidified after being in contact with the outer wall of the low-temperature heat exchange pipe, so that the effect of separating the coal tar gas and the water vapor from the tail gas is achieved; a cold source which cannot be utilized and can influence subsequent RTO furnace treatment in the part of tail gas is ingeniously used for separating energy of coal tar and water vapor in the waste gas, a refrigerating device does not need to be independently arranged in the cooling and condensing process of the coal tar and the water vapor, and the purposes of energy conservation and emission reduction are achieved.

The invention relates to the technical field of eccentric butterfly valves, and discloses an eccentric butterfly valve with an anti-blocking function, which comprises an eccentric butterfly valve body, a shaft tube is fixedly arranged at the lower end of one side of the eccentric butterfly valve body, a driving motor is fixedly mounted at the lower end of the shaft tube, and a rotating shaft is fixedly arranged at the upper end of a rotating shaft of the driving motor; a valve clack is fixedly arranged at the position, close to the inner side of the eccentric butterfly valve, of the outer side of the rotating shaft, a filtering assembly is arranged in one side of the eccentric butterfly valve, a cleaning assembly is arranged at the position, close to the position between the shaft pipe and the filtering assembly, of the inner side and the outer side of the eccentric butterfly valve, and a supporting assembly is arranged at the position, corresponding to the filtering assembly, of the outer side of the eccentric butterfly valve. According to the eccentric butterfly valve with the anti-blocking function, impurities in a water source are filtered through the filter screen through overall cooperative use, the blocking situation is avoided, and the situation that the circular ring sleeve deviates under the impact of water flow is prevented.

The invention belongs to the technical field of regulating valve noise reduction, and particularly relates to a sleeve multi-stage noise reduction regulating valve system which comprises a sleeve multi-stage noise reduction regulating valve, a pneumatic diaphragm actuator, an air source control device, an intelligent control device, a butterfly valve, a reducing joint, a companion flange and a user pipeline. The sleeve multi-stage noise reduction regulating valve comprises a valve body. When fluid enters the valve, water flow is preliminarily dispersed through the first noise reduction holes in the outer layer, direct impact of the fluid on the valve body is reduced, noise is lowered, the water flow enters the upper sleeve and then falls onto the inclined buffer baffles, the buffer baffles are arranged in an up-and-down alternate multi-layer mode, and therefore the situation that the water flow vertically falls down and directly flushes the valve body is avoided, and noise is further lowered; and then the water flow passes through the second noise reduction hole in the inner layer, the water flow is further dispersed, direct impact of the fluid on the valve body is reduced again, formation of turbulent flow can be effectively restrained through the first noise reduction hole with the variable diameter, the second noise reduction hole with the variable diameter and the inclined buffering baffle, and therefore noise is reduced.

The invention provides a method for adjusting a gas inlet device in semiconductor processing equipment and the semiconductor processing equipment, and the method comprises the steps: conveying gas through a reference path exhaust device with a flow controller, and obtaining an associated gas supply parameter reference value under a preset gas supply condition, the gas supply condition and the gas supply parameter both relate to the cavity pressure and the opening degree of the exhaust butterfly valve; gas is conveyed through the selected adjustment gas inlet device, and related gas supply parameter adjustment values are obtained; and calculating according to the gas supply parameter reference value and the gas supply parameter adjustment value to obtain a gas flow deviation, adjusting the selected gas pressure regulating valve of the adjustment gas inlet device to enable the gas flow deviation to meet the requirement, and completing adjustment of the adjustment gas inlet device. According to the adjustment method, the process is simple, and the gas flow of the gas inlet device provided with the adjusting valve is equivalent to the gas flow of the gas inlet device provided with the flow controller through gas flow deviation adjustment, so that the gas pressure adjusting valve is equivalent to the flow controller, the usage amount of the flow controller is reduced, and the cost is effectively reduced.

The utility model relates to the technical field of flange butterfly valves, and provides an anti-blocking flange butterfly valve which comprises a valve body, flange plates are fixedly connected to the two ends of the valve body respectively, a valve seat is arranged on one side of the outer portion of the valve body, a butterfly rod is fixedly connected to the bottom of the valve seat, a butterfly plate is fixedly connected to the outer portion of the butterfly rod, and a supporting plate is arranged in the valve body. Three supporting rods are fixedly connected to the exterior of the supporting plate, a rotating rod is rotatably connected to the interior of the supporting plate, a hollow rod is fixedly connected to the exterior of the rotating rod, a plurality of turbine blades are fixedly connected to the exterior of the hollow rod, a connecting rod is fixedly connected to one end of the rotating rod, and three first scraping plates are fixedly connected to the exterior of the connecting rod; and a filter screen disc is fixedly connected to the interior of the valve body. By means of the technical scheme, the problems that in the prior art, in the long-time using process of a traditional butterfly valve, a large number of impurities are attached to the interior of the valve body, the valve body is blocked, and using is affected are solved.

The present invention relates to the technical field of valves, and disclosed is a butterfly valve for use in ultra-low temperature environment. The butterfly valve comprises a valve body (1), a butterfly disc (2) in the valve body (1), a valve seat (3) matching with the butterfly disc (2), a valve stem (4) fixed to the butterfly disc (2), and an operating assembly (5) for driving the valve stem (4) to rotate, wherein a manhole (11) and an observation cover (12) covering the manhole (11) are provided on the valve body (1), and the observation cover (12) is detachably connected to an outer edge of the manhole (11) on the valve body (1); a cleaning assembly (6) is provided on an outer side face of the valve body (1), and the cleaning assembly (6) comprises a cleaning member (61) located above the observation cover (12) and a driving member (62) for driving the cleaning member (61) to slide back and forth on an upper side face of the observation cover (12); and an operating wheel (51) rotates to drive the driving member (62) to operate, and one side of the cleaning member (61) abuts against the upper side face of the observation cover (12), which reduces the difficulty of maintenance of the butterfly valve and improves the efficiency of maintenance of the butterfly valve. In addition, the rotation of the operating wheel (51) can drive the driving member (62) to operate, which in turn drives the cleaning member (61) to clean an outer surface of the observation cover.

The invention relates to the technical field of pressure control, in particular to a butterfly valve pressure self-adaptive adjusting method, device and equipment and a storage medium. According to the method, a pre-constructed neural network model is introduced, and user set pressure, actual measurement pressure, current control signals and error parameters serve as input variables; dynamic generation and real-time self-adaptive adjustment of PID control parameters are realized, the technical bottlenecks that parameter setting of a traditional PID controller is complex and adaptability to non-linear and time-varying systems is insufficient are effectively solved, and the parameter adjustment period is shortened; the weight parameter of the neural network is continuously optimized through a back propagation algorithm, so that the inhibition capability of the system on external disturbance is remarkably enhanced, the overshoot is reduced, and the long-term stability and control precision of pressure control are improved; the target step number is calculated in combination with butterfly valve hardware parameters, the accuracy and rapidity of stepping motor driving are ensured, and the problem of response delay of traditional PID control is effectively solved.

The invention relates to the technical field of two-way sealing butterfly valves, in particular to a condenser cut cylinder two-way sealing butterfly valve which comprises a valve body, a valve rod and a valve plate, a driving cavity is formed in the valve body, the valve rod is sleeved with a transmission piece, two sliding blocks are arranged in the driving cavity, and expansion rings are arranged below the two sliding blocks. A runner is arranged between the expansion ring and the sliding block on the valve body; a first sealing groove is formed in the valve plate, the transmission piece is driven through rotation of the valve rod, and the two sliding blocks are driven to slide through the transmission piece. The sliding block moves to drive fluid in the flow channel to flow, the expansion ring is driven to expand towards the first sealing groove of the valve plate, the expansion ring is tightly attached to the first sealing groove through deformation, and sealing of the valve body is achieved. Compared with the prior art, through the more compact structure and space layout, a sealing mechanism is simplified, and the requirements of an external transmission assembly and a complex adjusting mechanism are reduced, so that the overall size of the valve is effectively reduced, and the problem that side space is occupied is avoided.

The invention relates to a metal hard sealing structure of a three-eccentric center butterfly valve and an optimization design method of the metal hard sealing structure. The metal hard sealing structure comprises a valve body, a valve seat, a valve plate, a metal sealing ring and a valve plate gland. An annular groove is formed in the edge of the outer end face of the valve plate, the metal sealing ring is arranged in the annular groove, and the metal sealing ring is pressed and fixed through the valve plate gland. A metal hard sealing pair is formed between the metal sealing ring and the valve seat, and sealing surfaces between the metal sealing ring and the valve seat are matched conical surfaces; the valve plate is of an asymmetric structure; axial eccentricity b exists between the center line of the valve plate and the center line of the valve shaft, radial eccentricity a exists between the axial middle section of the metal sealing ring and the rotating center of the valve shaft, and an eccentric angle phi exists between the center line of the conical angle of the conical surface and the center line of the valve body. According to the three-eccentric butterfly valve, the size parameters and the material distribution of the valve internals are optimized, and the structural safety and the sealing performance of the three-eccentric butterfly valve are improved.

The invention discloses a wear-resistant and corrosion-resistant butterfly valve, and relates to the field of butterfly valves, the wear-resistant and corrosion-resistant butterfly valve comprises a butterfly valve and an electric controller mounted on the butterfly valve, the electric controller is used for controlling opening and closing of the butterfly valve, connecting pipelines are mounted on two sides of the butterfly valve, and the butterfly valve and the two connecting pipelines are sleeved with two heat insulation boxes. It needs to be explained that in the embodiment of the invention, through the arrangement of the heat preservation boxes and the light-transmitting plate, in the using process of the butterfly valve, the two heat preservation boxes seal and protect the butterfly valve and the electric controller as well as the connecting position of the butterfly valve and the two connecting pipelines, and the problem that the butterfly valve is corroded by being exposed to the sun and rain for a long time is avoided; meanwhile, a light-transmitting plate is installed on the heat preservation box, the interior of the heat preservation box is heated by transmitting sunlight, the heat preservation function is achieved, normal use of the butterfly valve is guaranteed, and freezing is avoided; in addition, when the sunlight intensity is high, the folding shielding cloth is unfolded to shield the light-transmitting plate, and the problem that the electric controller is damaged due to the fact that the temperature is too high is avoided.

The invention discloses high-precision grinding equipment for a three-eccentric center butterfly valve sealing pair, and belongs to the technical field of grinding equipment, the high-precision grinding equipment comprises a machine body, a machine base, a rotating base, a cross beam, a grinding head sliding base, a workbench, a dynamic and static pressure grinding head electronic shaft, an X-axis moving assembly, a Z-axis moving assembly and a swing angle driving mechanism, the X-axis moving assembly is used for driving the transverse sliding base to move, and the Z-axis moving assembly is used for driving the Z-axis moving assembly to move; the swing angle driving mechanism is used for driving the rotating base to rotate relative to the machine base. Through the arrangement of the swing angle driving mechanism, the X-axis moving assembly and the Z-axis moving assembly, the grinding wheel always moves on the grinding sealing face of a workpiece in the grinding process, that is, along with grinding, the ideal smoothness of the grinding face of the sealing pair reaches Ra0.2 or below, the roundness of the grinding inner circle and the grinding outer circle reaches 0.003 mm, the machining time is fully utilized, the grinding efficiency is improved, grinding stress is uniform, and the service life of the grinding wheel is prolonged. The grinding precision is improved, the universality and the sealing performance of the sealing pair of the three-eccentric butterfly valve can be guaranteed, and 100% exchange of the sealing pair is achieved.

The invention relates to the technical field of industrial wastewater sampling and discloses an industrial wastewater sampling system.The industrial wastewater sampling system comprises a frame, a connecting frame, a hydraulic cylinder and a rectangular plate, the connecting frame is located in the frame and slidably arranged in parallel, and the bottom of the hydraulic cylinder and the right side of the interior of the connecting frame are fixedly mounted; the upper surface of the rectangular plate and one end of an output shaft of a hydraulic cylinder are fixedly mounted, and a trigger sampling mechanism is arranged in the rectangular plate. According to the industrial wastewater sampling system, when a trigger rod is in contact with the bottom of a canal, a connecting spring and a telescopic rod in a power rebound mechanism are compressed, a third rack is driven to move upwards, a valve switch control mechanism is linked, a first butterfly valve and a second butterfly valve are synchronously closed, and a sampling barrel is sealed; it is ensured that the water sample is captured at the moment when the sampler is stabilized at the target depth and bottom mud is not stirred, and therefore index distortion of suspended solids and adsorptive heavy metal is effectively avoided, and the authenticity of the sample and the accuracy of detection data are improved.

The invention discloses a wave-current combined simulation system and method in a low-pressure environment, and relates to the technical field of underwater vehicle hydrodynamic model tests. The defects that in the prior art, sealing and strength are difficult to guarantee in a low-air-pressure environment, and accurate flow velocity and shear gradient control of a multi-layer flow channel cannot be achieved are overcome. According to the technical scheme, the device comprises a low-pressure pool, a plurality of layers of layered water inlet galleries, a plurality of layers of layered water outlet galleries, a rectifying wall, a rectifying baffle, a flow guide grid, a wave absorbing bank, an in-cabin rocking plate type wave maker, a plurality of bottom flow making pump flow making systems, an electric butterfly valve, a high-voltage frequency conversion cabinet, a three-phase asynchronous motor, a gear box, an impeller shaft system and the like. All the devices work cooperatively, and accurate coupling simulation of a multi-layer flow field and high sea condition waves under low air pressure is achieved. The device is suitable for wave-current combined hydrodynamic characteristic simulation and test research of deep-sea navigation bodies and ocean engineering equipment in a low-pressure environment.

The invention relates to a pressure control method and system and a storage medium. The method comprises the steps that the monitored current angle of a butterfly valve and the monitored current pressure of a process cavity are obtained; determining the current air inflow of the process chamber according to the current angle and the current pressure of the butterfly valve; determining the predicted pressure of the process chamber at the next moment according to the current angle of the butterfly valve and the current air inflow; according to the set target pressure, the predicted pressure at the next moment and the current air inflow, the target angle of the butterfly valve is determined; and the operation path of the butterfly valve reaching the target angle of the butterfly valve in the shortest time is planned, and the butterfly valve is controlled according to the operation path so that pressure control over the process cavity can be achieved. The real-time air inflow is automatically estimated, the future pressure is accurately predicted, pressure overshoot is reduced, and the stabilization time is shortened; and the opening switching speed of the butterfly valve is maximized, the target angle is reached as soon as possible within the hardware bearing range, and then the pressure response speed is increased.

The invention relates to the technical field of epitaxial growth, and particularly provides a double-butterfly-valve pressure control system and method and an epitaxial furnace, and the system comprises an exhaust pipeline which is sequentially provided with a gate valve, a first pressure collection assembly, a first butterfly valve and a process pump; a second butterfly valve is arranged on the pressure regulating pipe; a second pressure acquisition assembly; the controller is used for adjusting the opening degree of the first butterfly valve according to the first preset opening degree range, the first pressure information and the first preset pressure, and when the opening degree variable quantity of the first butterfly valve is within the first preset opening degree range and the difference value between the first pressure information and the first preset pressure is within the first preset pressure range, the first butterfly valve is opened. The opening degree of a second butterfly valve is adjusted according to the second preset opening degree range, the second pressure information and the first preset pressure; the system can effectively reduce the adjustment frequency of the opening degree of the first butterfly valve, so that the service life of the first butterfly valve is effectively prolonged, and the maintenance period of the epitaxial furnace is effectively shortened.

The invention relates to the technical field of butterfly valves, in particular to a butterfly valve with a self-cleaning function, which comprises a valve body, a rotary handle, a valve rod and a butterfly plate and further comprises a cleaning ring, the cleaning ring coaxially slides in the valve body, and the outer side of the cleaning ring abuts against the inner wall of the valve body. A reciprocating pulling mechanism is arranged in the side wall of the valve body and is in driving connection with the cleaning ring; the butterfly valve has the beneficial effects that the cleaning ring is slidably mounted in the valve body and is in driving connection with the impeller on the opened butterfly plate through the reciprocating pulling mechanism in the side wall of the valve body, after the butterfly plate is opened, liquid flowing through the valve body impacts the impeller to rotate, the impeller drives the reciprocating pulling mechanism to operate when rotating, and the cleaning ring is driven to rotate; the reciprocating pulling mechanism drives the cleaning ring to slide in a reciprocating mode to clean the inner wall of the valve body, the cleaning ring can continuously move in a reciprocating mode when liquid flows through the valve body, the inner wall of the valve body is cleaned, and thorough cleaning is guaranteed.

The invention provides an intelligent butterfly valve digital twinning system and method based on calculation and measurement fusion, and belongs to the technical field of digital twinning, and the system comprises a physical entity module, an information interaction module, a twinning body construction module and a visualization module. The method comprises the following steps: firstly, constructing a high-fidelity butterfly valve three-dimensional geometric model, and carrying out fluid-structure interaction simulation; secondly, real state information of the butterfly valve is transmitted to an intelligent butterfly valve digital twinning system in real time, and motion state data of the butterfly valve are obtained; thirdly, constructing a prediction agent model based on the structural performance data; and finally, constructing a high-fidelity butterfly valve virtual model, taking real-time motion state data of the butterfly valve as input to drive the butterfly valve virtual model, and completing visualization of the intelligent butterfly valve digital twin system. Accurate mapping and total factor monitoring of the butterfly valve operation state can be achieved, completeness, real-time performance and high fidelity of digital twin data are guaranteed through calculation and measurement fusion, and the safety and control accuracy of a pipe network system can be improved.

The utility model provides an environment-friendly treatment system for flue gas of a blast furnace hot blast stove. The environment-friendly treatment system comprises a desulfurization assembly, a dust removal assembly, an induced draft fan, a smoke exhaust piece, an ash conveying assembly, an ash collecting assembly and a back flushing pipeline, the desulfurization assembly is communicated with the input end of hot-blast stove flue gas, the desulfurization assembly is used for desulfurizing the hot-blast stove flue gas, the desulfurization assembly, the dust removal assembly, the induced draft fan and the smoke exhaust part are sequentially connected in series through a pipeline, a dust removal pneumatic butterfly valve is arranged between the desulfurization assembly and the dust removal assembly, and a reverse blowing switching valve is arranged between the dust removal assembly and the induced draft fan; the ash conveying assembly is communicated with a nitrogen gas source, the ash conveying assembly is communicated with a dust outlet of the dust removal assembly, and the ash collecting assembly is communicated with the ash conveying assembly; the reverse blowing pipeline is communicated with the induced draft fan and the reverse blowing switching valve, and a reverse blowing pneumatic butterfly valve is arranged on the reverse blowing pipeline. According to the utility model, a nitrogen pulse back flushing technology is not used for back flushing, so that the filtering cost can be greatly reduced.

The invention relates to the technical field of fire-fighting butterfly valve production, in particular to a fire-fighting butterfly valve assembly punch forming device which comprises a machine body, a lower supporting plate is fixedly installed on the upper end face of the machine body, limiting sliding columns are fixedly installed at the four corners of the upper end face of the lower supporting plate, and an upper supporting plate is jointly and fixedly installed at the upper ends of the limiting sliding columns. A driving mechanism used for providing power for the stamping fluted disc is arranged on the upper supporting plate. A positioning, flat pressing and stamping integrated operation model is adopted to complete three-stage punch forming operation of the fire-fighting butterfly valve handle fluted disc, in the three stages of punch forming operation, fitting supporting, expansion positioning, bearing plate fitting and rectangular limiting frame locking are provided correspondingly, the stamping force can be evenly dispersed, excessive deformation of materials is prevented, and the service life of the fire-fighting butterfly valve handle fluted disc is prolonged. The flatness and the overall shape of the fluted disc are improved, it is ensured that the fluted disc is kept at the correct position in the stamping process, the locking stability is further enhanced, the structural integrity and the anti-fatigue performance of the fluted disc are improved, and finally it is ensured that the stamping quality of each fluted disc meets the preset standard.

The invention discloses a semiconductor butterfly valve and thin film deposition equipment thereof, the semiconductor butterfly valve comprises a valve body and a valve plate, the valve body is provided with an assembly hole, and the valve plate is rotatably connected in the assembly hole; a plurality of grooves are further formed in the upper plate face and / or the lower plate face of the valve plate. According to the semiconductor butterfly valve and the thin film deposition equipment thereof, the groove or the groove is additionally formed in the valve plate and / or the valve body, and residual powder falling onto the butterfly valve is guided through the groove and the groove, so that the valve plate is prevented from being blocked by the residual powder, the maintenance period of the equipment is prolonged, the maintenance cost is reduced, and the process efficiency is improved.

A central control detection device and detection method for a spherical graphite production line, belonging to the technical field of graphite production line detection. In order to solve the problem of online detection on a closed graphite production line, the present invention includes a valve control cabinet for a Baxter dry detector and a negative pressure sampling box. A negative pressure pump is installed on the inner side of the top of the negative pressure sampling box, a filter is installed in the middle, and a collection bin is installed at the bottom. The Baxter detector in the valve control cabinet of the Baxter detector is connected to the left side of the negative pressure sampling box through an online detection pipeline. A stainless steel sampling pipe main pipe is arranged on the right side of the negative pressure sampling box at a height relative to the filter; a plurality of stainless steel sampling pipe branch pipes are arranged on the stainless steel sampling pipe main pipe, an electric butterfly valve is installed on the stainless steel sampling pipe branch pipe, and the stainless steel sampling pipe branch pipe is connected to the stainless steel sampling pipe branch elbow through a flange, and the stainless steel sampling pipe branch elbow extends into the silo. The present invention improves the product recovery rate and the equipment utilization rate.

The invention relates to the technical field of powder metallurgy, and discloses an anti-sintering deformation type powder metallurgy device which comprises a powder metallurgy punching machine, a plate body is arranged on the powder metallurgy punching machine, a die groove is formed in the plate body, a punching head is arranged on the powder metallurgy punching machine, a movable base is arranged on the plate body, and a pressing plate is arranged on the movable base. A feeding pipe is fixed on the movable seat, and an electric powder butterfly valve is mounted on the feeding pipe; a rotating assembly is arranged in the moving seat and comprises a discharging pipe and an air suction pipe. Through the linkage design of the rotating assembly and the air exhaust assembly, active air exhaust is conducted on the die cavity before powder stamping, residual air is thoroughly exhausted, in the process, local stress concentration caused by high-pressure air mass formed by air compression in the pressing process is avoided, and the density of a pressed blank is more uniform and closer to a theoretical value; and compaction layering, cracks or surface defects caused by gas heating expansion are prevented.

The invention relates to the technical field of valves, and particularly discloses an automatic alarm type valve with an automatic water volume monitoring function, which comprises a valve main body with a tubular structure, mounting flanges are fixedly mounted at the left end and the right end of the valve main body, and a storage box is fixedly mounted at the upper end of the valve main body; a butterfly valve element is rotationally installed in the middle of the interior of the valve body, a center rotating shaft used for driving the butterfly valve element to rotate is fixedly installed at the upper end of the butterfly valve element, a controller is fixedly installed at the upper end of the storage box, and a buzzer and an alarm lamp which are used for reminding workers are fixedly installed on the upper surface of the controller. According to the automatic alarm type valve with the automatic water volume monitoring function, the device is installed through the installation flange, then the rotating air cylinder drives the butterfly valve element to rotate through the center rotating shaft, the purpose of controlling the valve to be opened and closed is achieved, and in the process, the flow sensor is fixedly installed in the valve body to monitor the accurate water flow; therefore, whether valve control is accurate is judged.