844 results about "Rotary switch" patented technology

The invention provides tail gas purification treatment equipment and method for a propane dehydrogenation device, and relates to the technical field of tail gas treatment. The equipment comprises a purification mounting part, and a rotary switching part is mounted on the purification mounting part; two filtering devices are mounted on the rotary switching part; the rotary switching part is used for driving the two filtering devices to rotate in the purification mounting piece; a sliding limiting part is mounted on the purification mounting piece; the sliding limiting part is attached to the filtering device below the sliding limiting part; a worker can conveniently check the corrosion condition of the filter cartridge, the filter cartridge can be prevented from being corroded and damaged to influence the filtering effect, meanwhile, the filter cartridge does not need to be disassembled, the continuous purification effect is guaranteed, and the worker can conveniently inspect and observe; the problems that according to existing propane dehydrogenation device tail gas purification treatment equipment, rust and other impurities are generated, the purification effect is affected, and the filtering performance of the filter cartridge is easily reduced are solved.

The invention discloses a multi-gear adjusting rotary switch, which comprises a base, a shell cover, a rotary handle and a contact assembly, and is characterized in that the rotary handle is rotationally arranged between the base and the shell cover and is provided with a driving rod extending along the radial direction of the rotary handle; the contact assembly comprises a plurality of moving contact bridges which are annularly arranged in the mounting cavity with the axis of the rotating handle as the center and are of elastic structures, and a plurality of static contact pieces which are arranged on the base and are opposite to the plurality of moving contact bridges, and the plurality of moving contact bridges are connected and are located on the moving path of the driving rod. According to the technical scheme, the driving rod drives the multiple movable contact bridges to make contact with the multiple static contact pieces in the process of rotating along with the rotating handle, operation pressure is remarkably dispersed through an in-turn contact mechanism formed by the driving rod and the multiple movable contact bridges, continuous stress of a single movable contact bridge is avoided, the mechanical load and the fatigue degree of the movable contact bridges are greatly reduced, and the service life of the movable contact bridges is prolonged. The heating probability is reduced, abrasion and fusion welding risks are reduced, and the mechanical service life is prolonged.

The invention belongs to the technical field of aerospace, and discloses an aviation electrical system insulation detection device which comprises a shell and an overall frame serving as the insulation detection device. The display screen is used for displaying measurement data in real time; the function key group integrates the functions of measurement mode switching, data retention and insulation test starting; according to the conversion assembly, through the linkage design of the rotating disc and the rotating switch, the problem that functions cannot be switched when the two hands of a traditional insulation detection device are occupied is thoroughly solved, a worker only needs to rotate the rotating disc with the hand of supporting equipment, the rotating switch can be driven through the driving mechanism, switching of insulation test voltage gears is completed with one hand, and the working efficiency is improved. Compared with a traditional device which needs to frequently put down a connecting line and manually rotate a switch, the design simplifies the operation steps from three steps to one step, shortens the single function switching time, and remarkably improves the efficiency and safety of high-altitude operation or narrow space detection.

The utility model relates to the technical field of torque detection, and discloses a rotary switch torque detection device, which comprises a torque detection equipment main body and a bearing platform, the bearing platform is movably arranged at the top of the torque detection equipment main body, and the torque detection equipment main body comprises a first servo motor, a screw rod, a vertical rod, a lifting block and a second servo motor. The second servo motor is movably installed at the top of the torque detection equipment body, and a first fixing plate is fixedly installed at the bottom of the second servo motor. According to the utility model, the second servo motor moves downwards to enable the inclined surface at the bottom of the clamping block to extrude the rotary switch, so that the telescopic rod drives the clamping block to move towards the outer side, the clamping block clamps the rotary switch due to the elastic action of the spring, and the rotary switch is rotated according to parameters set by the second servo motor; therefore, a torque rotation test with fixed force is carried out on the rotary switch, and the problem that the detection efficiency is reduced due to the fact that manual twisting force is different every time and manual operation needs to be carried out for multiple times is solved.

The utility model belongs to the technical field of rotary switches, and particularly relates to a breaking switch which comprises a shell, a moving contact assembly, a static contact assembly and an arc extinguish chamber. The moving contact assembly comprises a moving contact rotating stand and a moving contact piece. The two ends of the moving contact piece protrude relative to the periphery of the moving contact rotating stand to form moving contact parts. Each group of static contact assemblies comprises at least one group of static contact parts and an elastic part, and each group of static contact parts comprises two static contact plates which form a clamping cavity with an opening; and in at least part of paths of the moving contact rotating stand to the opening position, the moving contact part is located in the arc extinguish chamber. The static contact is arranged to be of a contact structure comprising more than one group of static contact parts with bidirectional elastic clamping force, the thickness of the moving contact can be greatly reduced, the thickness of the longitudinal space of the arc extinguish chamber does not need to be increased, and the moving contact part of the moving contact can extend into the arc extinguish chamber, so that the effect of reliably and quickly breaking a high-voltage arc is achieved, the breaking capacity is improved, and the service life of the arc extinguish chamber is prolonged. And the purpose of high-voltage breaking is achieved.

The invention relates to a door lock with a rotary switch button, comprising a housing and a puller disposed in the housing and used to drive the bolt to unlock or lock, a knob that can drive the puller to rotate is disposed on the outer side of the housing, the puller is connected to a reset mechanism that drives it to reset, and a switch mechanism for limiting the rotation of the knob is disposed between the housing and the knob, so that the knob is in a locked state in a natural state and cannot drive the puller to rotate together. The invention adds a switch mechanism to the knob so that it cannot be twisted directly, and the switch needs to be pressed to rotate the knob when opening the door, thereby effectively enhancing the safety performance of the door lock and preventing young children from opening the door lock privately.

The utility model discloses an amphibious long-distance lifesaving throwing device for flood prevention rescue, which sequentially comprises a fixed base mechanism, a throwing mechanism and an intelligent language guiding mechanism, the fixed base mechanism comprises a bottom plate placed on the ground and a throwing angle clamping groove plate, a groove is formed in the bottom plate, and the throwing angle clamping groove plate is arranged in the groove. A groove is formed in the bottom plate, a proximity induction switch is arranged on the side face of the groove, the throwing angle clamping groove plate is movably connected with the bottom plate, the throwing mechanism is connected with the bottom plate and the throwing angle clamping groove plate, and a supporting structure is further arranged at the joint of the throwing mechanism and the throwing angle clamping groove plate. Any condition can be selected for use through an amphibious knob switch on the intelligent voice guide mechanism, and throwing can be completed by correspondingly selecting a throwing angle clamping groove in an intelligent voice broadcast prompt. The long-distance lifesaving throwing device is low in requirement for operators, capable of being used in a quick-hand mode and high in efficiency.

A lighting device comprising a light source, a power source, a switch assembly, a subframe having an interior volume and a sealing surface that surrounds a first opening in the subframe, the interior volume of the subframe being sized to receive the power source, a membrane that seals to the sealing surface of the subframe, and a vent that acts to prevent liquids from entering the interior volume of the subframe via a second opening, while permitting for gases to be released from the interior volume through the vent.

Disclosed is a key travel adjustable switch, including a fastener, a switch cap connected to the fastener, a switch cap silicone positioned to connect to the switch cap and arranged between the switch cap and the fastener, and a switch body. The fastener is rotatable with a microswitch pin to trigger a microswitch, and the switch cap, the switch cap silicone, and the fastener form a rotary assembly. A travel positioning portion of the switch cap structurally matches with a plurality of travel adjusting portions on the switch body. A key travel of the key travel adjustable switch is adjustable by pressing and rotating the switch cap to match the travel positioning portion with different travel adjusting portions, thereby adjusting a response speed of the key travel adjustable switch to meet a user's demand.

The utility model provides a switch unit, a rotary switch and a power supply system, and relates to the technical field of low-voltage apparatuses. The switch unit comprises a shell and two groups of static contact assemblies and moving contact assemblies which are arranged in the shell, each static contact assembly comprises a static contact, each moving contact assembly comprises a moving contact, each static contact comprises a contact part and a wiring part, the two contact parts are matched with the moving contact respectively, the contact parts extend along a straight line in a preset direction, and the wiring parts are matched with the wiring parts. The two contact parts are arranged oppositely in a preset direction, and the preset direction is perpendicular to the rotation axis of the moving contact assembly; the shell is provided with a first side surface and a second side surface which are opposite to each other, the first side surface and the second side surface are respectively provided with wiring ports, and the two wiring ports respectively correspond to the two wiring parts; and when the at least two shells are stacked, the wiring ports on the two adjacent layers of shells are oppositely arranged in the first direction. The switch unit is convenient for a customer to position and wire, and the production cost can be reduced.

The utility model relates to the field of high-pressure water mist guns, in particular to a rotary switching double-runner high-pressure water mist gun which comprises a spray gun handle, a tail shielding check ring and a rotary block A are sequentially connected to one side of the spray gun handle, and a rotary block B is connected to one side of the rotary block A; a sprayer valve element, a polytetrafluoroethylene sealing gasket, a sixth sealing ring, a rubber sleeve and a steel ball are arranged on one side of the rotating block B. The upper portion of one side of the sprayer valve element is connected with a choke plug and a copper ring tightening nut, and the lower portion of one side of the sprayer valve element is connected with two double-pipe joints, a first sealing ring and a first screw. According to the utility model, high-pressure water flow passes through the rotating block B and the rotating block A from the spray gun handle, and the rotating block A is rotated by rotating the gun body to complete flow channel switching; water flow sequentially passes through the first round pipe, the valve element, the lower nozzle and the upper nozzle, and a narrow-angle far-spraying posture is formed in the center. Water flow sequentially passes through the second round pipe, the valve element, the mist nozzle base, the mist flat spraying head and the six mist flat spraying heads around the spraying head to form a wide-angle near spraying posture.

The invention provides a spark discharge device and a spark discharge accurate control method, and relates to the technical field of spark discharge. The device comprises a pair of spark electrodes, a rotary switch, a capacitor and a power supply, wherein a gap exists between working ends of the spark electrodes; the spark electrode, the rotary switch and the capacitor are connected in series to form a discharging loop, and the capacitor and the power supply are connected in series to form a charging loop; the rotary switch comprises a rotatable rotor and a toothed bar connected with the rotor; a contact is arranged in the discharge loop, and when the contact is in contact with the toothed bar, the discharge loop is conducted. According to the invention, the discharge loop is rapidly switched on and switched off through the rotary switch, various parameters of spark discharge can be accurately and stably controlled, so that the spark discharge is not influenced by the environment, such as spark breakdown voltage, discharge frequency and the like, and the spark discharge can be prevented from being converted into corona, glow or arc discharge, for example, the spark discharge can be normally generated under low air pressure.

The present disclosure discloses a key travel adjustable switch. The key travel adjustable switch may include a snap fastener, a switch cap clamped to the snap fastener and having a travel positioning portion, a switch cap silicone between the switch cap and the snap fastener; and a switch body having a plurality of travel adjusting portions of different heights. A key travel of the key travel adjustable switch may be adjustable by positioning the travel positioning portion at different travel adjusting portions of different heights. When the key travel adjustable switch is in use, by prying open a matching structure of a travel positioning portion of the switch cap and the travel adjusting portion on the switch body, by a rotation of the switch cap and / or the switch body at a certain angle, the travel positioning portion may match with a different travel adjusting portion to adjust the key travel.

The utility model discloses a dual-function water mixing and separating control valve which comprises a main control valve seat and a pressing water separating rotary switch temperature adjusting valve element arranged in the main control valve seat, and a valve cavity with an opening in the side face is formed in the main control valve seat. A mixed water lower water outlet hole is formed in the bottom wall of the valve cavity; a hot water inlet and a cold water inlet are formed in the bottom of the main control valve seat, an upper shower head water outlet hole is formed in the top of the main control valve seat, and an internal thread mounting hole is formed in the side face of the main control valve seat; a handheld fixing column is arranged on the side portion of the main control valve seat, and external threads are arranged at the end of the handheld fixing column. And the handheld fixing column is in threaded connection and fixation with the internal thread mounting hole through the external thread. The water distribution valve and the water mixing valve are integrated in the main control valve seat, control and adjustment are achieved by pressing the water distribution rotary switch temperature adjusting valve element, operation is convenient and fast, machining and assembling cost can be reduced, using stability of the water distribution valve is improved, and the water distribution valve is not prone to damage, attractive in overall appearance and convenient and fast to operate.

The invention discloses a microfluidic nucleic acid detection reagent card box and a use method thereof and full-automatic detection equipment, the microfluidic nucleic acid detection reagent card box comprises a card box body and a rotating switch, the card box body is provided with a plurality of liquid storage tanks which are separated from each other, and a liquid reagent for pre-loading a sample liquid and treating a biological sample; the plurality of independent chambers comprise a reaction chamber for performing nucleic acid extraction and purification on a sample by using a liquid reagent; the amplification cavity is used for performing nucleic acid amplification on the sample; and a waste liquid storage chamber; the plurality of micro-channels are respectively arranged between the rotating switch and each liquid storage tank, the reaction cavity, the waste liquid storage cavity and the amplification cavity, and are distributed around the rotating switch in a divergent manner; the rotary switch is provided with a radial flow guide channel which is used for realizing switching among the micro-channels; according to the invention, liquid adding and pipetting in the whole process of an experiment can be automatically controlled only by arranging a power source, and nucleic acid extraction and amplification can be realized on the closed clamping box by rotating the switch according to a preset program in cooperation with an external instrument for fluorescence detection, so that the result of a sample can be obtained.

The utility model discloses a rotary switching press-fitting mechanism which is characterized in that a rotary platform is arranged above a fixed table, the rotary platform is uniformly and fixedly connected with a buffer pad far away from the fixed table and close to the edge, the buffer pad is a cylindrical rubber pad, and four springs are arranged at the top of the rotary platform and close to the side wall of the buffer pad; four springs are arranged at the bottom of each connecting plate, a corresponding limiting rod is arranged in each spring in a sleeved mode, the connecting plates are fixedly connected to the top ends, away from the rotating platform, of the springs, and the butt joint columns are fixedly connected to the middles of the side walls, opposite to the buffer pads, of the connecting plates. Therefore, stable supporting can be provided for the connecting plate and the storage rack through cooperation of the springs and the limiting rods, it is guaranteed that the storage rack is in a stable vertical state, replacement of the bearings is facilitated, meanwhile, the limiting rods and the springs can buffer the borne pressure, damage to the rotating platform is reduced, and the rotating platform is convenient to use. And meanwhile, the problem that the rotating platform is inclined or bent due to stress is solved.

The utility model relates to the technical field of agricultural machinery maintenance, in particular to a pulling device for agricultural machinery, which comprises a mounting block, the side wall of the mounting block is provided with two symmetrically arranged mounting grooves, and the inner wall of the mounting groove on the right side is fixedly connected with a fixed handle. A connecting rod is fixedly connected to the inner wall of the left mounting groove, a movable handle is rotatably connected to the surface of the connecting rod, a mounting hole is formed in the upper surface of the mounting block, a circular groove is formed in the lower surface of the mounting block, and a hollow groove is formed in the surface of the movable handle; two symmetrically-arranged threaded columns are fixedly connected to the two sides of the mounting block, and by arranging the threaded columns, the first threaded pipe, the second threaded pipe, the elbow, the rotary switch and the adjusting rod, in the using process, the rotary switch is rotated to drive the adjusting rod to rotate, and the height of the extraction tool can be adjusted under the interaction of the adjusting rod and the fixing rod.

The utility model discloses a connector suitable for fluid transmission, which is characterized in that the front end part of a valve body is a locking surface, the valve body is of a front-back through hole structure, a cavity structure for accommodating a ball valve is formed in the middle of the valve body, and the central axis of the through hole of the ball valve coincides with the central axis of the through hole of the valve body; a rotary switch is arranged on the upper portion of the ball valve and controls the deflection state of the ball valve. The rotary switch is controlled to rotate and move and is matched and fixed with the other group of joint matched with the rotary switch; the front end portion where the positioning pin is located penetrates through the locking face and extends outwards, a positioning assembly is arranged at the rear end portion, and the positioning assembly limits the position of the positioning pin in the length direction. By means of the rotary switch, the deflection direction of the ball valve can be adjusted, meanwhile, fluid circulation of the valve body can be adjusted, locking of the locking pin and the positioning pin is synchronously achieved, the operation mode is synchronously achieved through the rotary switch, and operation is more convenient and faster.

The utility model relates to an automatic switching type winding comprehensive test device for a current transformer. The automatic switching type winding comprehensive test device comprises a rotary switch unit, a first alternating current contactor unit, a second alternating current contactor unit, a third alternating current contactor unit, a voltage regulator and a current booster, the rotary switch unit is connected with the first alternating current contactor unit, the second alternating current contactor unit and the third alternating current contactor unit; the first alternating current contactor unit is connected with the voltage regulator; the second alternating current contactor unit is connected with the secondary side of the detected current transformer, or is connected with the primary side of the reference current transformer and the primary side of the detected current transformer through a current booster; and the third alternating current contactor unit is connected with N secondary sides of the detected current transformer. Switching of a plurality of windings is completed on the comprehensive test device, the comprehensive test device is externally connected with a 380V power supply, three sets of alternating current contactors are installed in the test device, and the comprehensive test device is suitable for secondary winding error, turn-to-turn open circuit and excitation curve performance tests of a current transformer with at most 9 windings.

1. Name of the Design Product: Rotary Switch. 2. Use of the Design Product: A switching device for converting two-way power sources or loads. 3. Design Key Points of the Design Product: Lies in the shape. 4. Picture or Photograph that Best Illustrates the Design Key Points: Perspective View.

The utility model relates to the technical field of microphones, and discloses a portable sound pickup device capable of switching directivity, which comprises a gooseneck pipe and a sound pickup module, one end of the gooseneck pipe is connected with the sound pickup module, the other end of the gooseneck pipe is provided with a connecting port used for being plugged with electronic equipment, and the other end of the gooseneck pipe is connected with the sound pickup module. The pickup module comprises a rotary switching circuit unit, a mounting unit and a multi-direction pickup unit, the rotary switching circuit unit is arranged between the gooseneck pipe and the mounting unit, the multi-direction pickup unit is arranged on the mounting unit, the multi-direction pickup unit is electrically connected with the rotary switching circuit unit, and the rotary switching circuit unit is electrically connected with the mounting unit. The rotary switching circuit unit is electrically connected with the connecting port; the utility model has the following technical effects: the multi-angle pickup effect, multiple pickup modes and bending adjustment at different angles are realized.

The utility model relates to the technical field of switch, provide a cap body subassembly and multi -gear rotary switch, cap body subassembly is used for multi -gear rotary switch, and multi -gear rotary switch includes base, rotating shaft and gear shift mechanism, is set up with a plurality of gear holes on gear shift mechanism, cap body subassembly is connected with rotating shaft, and cap body subassembly is suitable for operating rotating shaft to switch one of a plurality of gear holes to be in the working position, and cap body subassembly includes: knob cap, the side to base is connected with rotating shaft, first limit structure and second limit structure all set up on the base, rotating disc, the outer periphery of rotating shaft is covered, and rotating disc is provided with third limit structure and fourth limit structure, wherein, first limit structure and third limit structure are in the lowest gear limit, and second limit structure and fourth limit structure are in the highest gear limit. The utility model can be suitable for the use of a variety of gears, and the versatility of cap body subassembly is improved.

The utility model relates to a tail cover with a rotary switch and a flashlight. The tail cover with the rotary switch comprises a sleeve and a switch assembly. The switch assembly comprises a point switch, a switch base, a pressing cap, a reset spring, a connecting sleeve and a rotating ring. The point switch is arranged in the mounting space of the switch base; the connecting sleeve sleeves the periphery of the pressing cap, and the front end of the connecting sleeve extends into the sleeve; the rotating ring sleeves the connecting sleeve and is fixedly connected with the connecting sleeve; a positioning ball is arranged at the front end of the connecting sleeve; three positioning holes located in the same virtual circle are formed in the switch base, an ejector block is formed on the outer side of the switch base, and a low-position platform, a middle-position platform and a high-position platform are formed at the front end of the pressing cap in the circumferential direction. When the positioning beads extend into the corresponding positioning holes, the top block and the low-position platform or the middle-position platform or the high-position platform jointly restrain the maximum distance of the pressing cap moving towards the direction close to the point switch. And gear switching and positioning are achieved by rotating the rotating ring, the diversified requirements of a user in different scenes can be met, and practicability is high.

The atomization equipment comprises an oil storage bin, an oil storage cavity and an oil inlet channel are formed in the oil storage bin, and a limiting protrusion is formed on the outer wall of the oil storage bin; the oil supply bottle is detachably installed in the oil storage bin and comprises an oil bottle body and a sealing assembly, an oil supply cavity is defined by the oil bottle body and the sealing assembly, an installation groove is formed in the sealing assembly, an oil supply channel is formed in the groove bottom of the installation groove, and a limiting groove is formed in the side wall of the installation groove; the rotary switch comprises a mounting part and a driving part, the mounting part is rotatably mounted in the mounting groove and is provided with a switch hole, and the driving part extends towards the notch direction of the mounting groove, so that the rotary switch has a dismounting position and an oil passing position on a rotation track; at the dismounting position, the switch hole and the oil supply channel are staggered, and the driving part is far away from the limiting groove; and in the oil passing position, the two ends of the switch hole communicate with the oil inlet channel and the oil supply channel correspondingly, and the driving part is close to the limiting groove. When the oil supply bottle is detached, oil in the bottle cannot leak out, and other parts cannot be polluted.

This utility model discloses a rotary switch with a light guide structure, comprising a switch body and a light guide structure. The light guide structure includes a housing that is fitted into a mounting hole on the front panel of the switch body. The front end of the housing has a lamp wick mounting slot, into which a lamp wick mounting plate is installed. The lamp wick mounting plate is located behind the mounting hole, and three lamp wicks are mounted on its front side. A light guide base is located on the front side of the mounting hole, and a light guide post is mounted on the light guide base. The end of the light guide post has three cylindrical light-entry channels located behind the mounting hole of the switch body, with the ends of the light-entry channels close to the three lamp wicks. Multiple hollowed-out elliptical holes are provided inside the light guide post. The front end of the light guide post extends out of the mounting hole, and a light-transmitting plate is fixed to the front end of the light guide post. This utility model eliminates the need for high-power LEDs, provides high brightness regardless of distance, and offers a greater display illumination effect.

The utility model relates to the technical field of electrical equipment, and discloses a multi-gear rotary switch with a reset function, which comprises a shell, the top end of the shell is provided with an A base chaining shell, the bottom end of the shell is provided with a B base chaining shell, the center of the shell is rotatably provided with a rotating shaft, and the rotating shaft is connected with the A base chaining shell and the B base chaining shell. An operation shaft is fixedly installed on the outer wall of the rotating shaft, an A end component is arranged in the A base chaining shell, a B end component is arranged in the B base chaining shell, and a reset component is arranged outside the operation shaft; the A-end component comprises a first link plug-in riveting base and a second link plug-in riveting base, the rotating shaft is rotated to drive the operation shaft to rotate, gear switching is achieved, the reset component is arranged to be used for increasing reset gears, six terminal pins in the prior art are improved into eight terminal pins, an eight-row power-on mode can be achieved, and the power-on efficiency is improved. And therefore, the requirement of multiple power-on gears on the electric appliance can be met more effectively.

The utility model provides an LED lamp capable of adjusting color temperature through rotation of a lamp holder. The LED lamp comprises a bulb shell, the lamp holder, a light source assembly and a driving circuit board. The bulb shell is combined with the lamp holder to form a closed space for accommodating the light source component and the driving circuit board; a rotary switch is arranged on the driving circuit board and fixedly connected with a rotary shifting piece arranged on the lamp holder through a rotary shell so that the rotary shifting piece can drive the rotary switch to rotate under the action of external force.

The utility model provides an electric power system relay protection tripping matrix rapid detection device comprising a box body, and a control circuit is integrated in the box body; the control circuit comprises a first alternating current air switch, the other end of the first alternating current air switch is connected with one end of a second alternating current air switch, and the other end of the second alternating current air switch is connected with a relay control loop; the relay control loop comprises a knob switch and a static intermediate relay; the knob switch is connected in series with a coil contact in the static intermediate relay; a signal indication loop is connected between the first alternating current air switch and the second alternating current air switch; the signal indication loop comprises a plurality of signal lamps which are connected in series with a normally open contact in the static intermediate relay; two sides of each group of normally open contacts in the static intermediate relay are connected in parallel with a group of plug protection loops. The device can directly judge whether the tripping contact is switched on or not by observing the state of the signal lamp, so that the state of the tripping outlet contact is judged, the test time is greatly saved, and the labor intensity of verification personnel is reduced.

The invention discloses an airflow circulation control door device which comprises a center shaft, a hole is formed in a shaft body of the center shaft in the length direction of the center shaft, an air duct door penetrates through the hole and is connected with the center shaft through a bolt pin, a door frame plate is arranged on the edge of the air duct door, and the two ends of the center shaft penetrate through the two opposite sides of the door frame plate correspondingly. One end of the center shaft is connected with a power piece through a transmission unit, and the power piece is connected with one side of the door frame plate. The invention further discloses a control method of the airflow circulation control door device. According to the invention, a central axis symmetric horizontal air duct door is adopted, the design concept that airflow operation is controlled through a horizontal air duct technological process is adopted, the whole door is a left-right rotary switch, the device is arranged at an air inlet and outlet port of a horizontal air duct of each compartment, airflow is in the horizontal direction, and a power cylinder of the air duct door uses energy as an air source; and the air duct door can be always in an open state when the air flow of the induced draft fan runs, so that the smooth passage of the air flow in each sub-chamber is ensured.

The invention relates to the technical field of fluid control equipment in a pipeline system, and discloses a throttle manifold manual valve monitoring device which comprises an internal valve, the top end of the internal valve is connected with a rotating switch, the outer side of the rotating switch is fixedly sleeved with a connecting disc, the outer side of the rotating switch is sleeved with a rotating disc, and the rotating disc is fixedly connected with the connecting disc. A signal receiver is arranged at the bottom of the rotating disc, a monitoring assembly is connected to the top end of the signal receiver, a fixing disc is fixedly connected to the bottom face of the rotating disc, a buzzer is arranged on the inner side of the rotating disc, a connecting rod is fixedly connected to one side of the buzzer, and a hollow cylinder is fixedly connected to one end of the connecting rod. Through the arrangement of the monitoring assembly, the opening and closing state of the internal valve can be detected in real time, the working visualization degree of the valve is remarkably improved, a user can easily know the opening and closing state of the valve without the help of professional equipment, and daily inspection and troubleshooting work are greatly facilitated.