15results about How to "Stable and reliable working condition" patented technology

The utility model relates to the technical field of natural gas extraction equipment, and particularly discloses a novel slip type underground throttler which comprises a mandrel, a central pipe, a fishing mechanism, a slip, a cone, a transition sleeve and a rubber sleeve. The central pipe is connected with the mandrel in a sleeved mode and connected with the slip, the cone and the rubber barrel in a sliding mode, the central pipe is connected with a limiting step and a locking mechanism, the limiting step is connected with the slip, the mandrel is connected with a nut, a connecting mechanism and an air nozzle, the transition sleeve is connected with a baffle ring and a standby cap, and the locking mechanism is connected with the locking mechanism. The back-up cap is connected with the nut, the baffle ring abuts against the rubber sleeve, the fishing mechanism is connected with the mandrel, and the problem that in the prior art, a conventional slip type flow controller is slightly blocked in the throwing process, and mistaken setting is likely to be generated is solved.

The invention relates to the technical field of circuit board preparation, and discloses a multilayer composite circuit board preparation method and a multilayer composite circuit board, and the method comprises the steps: mixing ceramic-based powder with nano metal particles, and carrying out sintering to form a heat-conducting microporous ceramic material with a continuous heat-conducting network and a microporous structure; a plurality of heat-conducting microporous ceramic materials are laminated and then pressed into a composite substrate through vacuum hot pressing, and through heat-conducting through holes are formed in the composite substrate; the composite substrates with the heat conduction through holes are stacked, a micropore layer used for heat conduction and shock absorption is arranged between every two adjacent composite substrates, and the stacked composite substrates and the micropore layers are subjected to vacuum hot pressing to form a multi-layer structure. According to the multi-layer composite circuit board preparation method and the multi-layer composite circuit board, through the continuous heat conduction network, the micropore structure and the micropore layer, the heat conduction performance is remarkably improved, thermal stress and mechanical stress are effectively released through the elastic characteristic of the micropore structure, and the overall stability of the multi-layer composite circuit board is enhanced.

The utility model discloses a low-noise and low-vibration switched reluctance motor stator and rotor, which comprises a stator or rotor shell and a stator / rotor iron core body, and T-shaped or dovetail-shaped grooves or bosses (hereinafter referred to as anti-rotation structures) are uniformly arranged on the inner side of the stator or rotor shell and the outer side of the stator / rotor iron core body. According to the anti-rotation structure, the stator or rotor shell and the stator / rotor iron core body are effectively embedded together in a die-casting or casting or riveting mode, and the strength and rigidity of the motor stator / rotor iron core body are greatly enhanced. The utility model aims to solve the problems that the strength of an iron core yoke part of a stator or a rotor of an existing switched reluctance motor is weak, and meanwhile, due to the salient pole structure characteristic of the switched reluctance motor, the motor can cause the deformation of a motor iron core due to the fluctuation change of a magnetic field when the motor works; and due to the fluctuation change of an air gap magnetic field, the torque fluctuation of the switched reluctance motor and the deformation of an iron core are caused, so that the operation noise and vibration of the motor are increased.

The invention discloses a cabinet shell part production clamp which comprises a bottom plate, a cover plate is arranged above the bottom plate, one side of the cover plate is fixedly connected with the bottom plate through a vertical plate, sliding grooves which are parallel to each other are formed in the surface of the bottom plate and the bottom of the cover plate, and a first moving plate and a second moving plate which are in sliding connection are arranged in the sliding grooves. A clamping assembly is further arranged on the inner sides of the first moving plate and the second moving plate and comprises extension rods arranged on the inner sides of the first moving plate and the second moving plate, a bearing plate located on the extension rods, a first limiting plate and a second limiting plate, and the first limiting plate and the second limiting plate are located on the inner side of the bearing plate and arranged in parallel. A first fastening bolt and a second fastening bolt are arranged on the first clamping plate and the second clamping plate respectively, and a first clamping block and a second clamping block are arranged on the first fastening bolt and the second fastening bolt.

The invention discloses a double-temperature condensation heat pump system, a control method and a clothes dryer, and the system comprises a double-stage compressor with a low-pressure-stage air cylinder and a high-pressure-stage air cylinder, a flow dividing control unit, a low-temperature heating loop, a high-temperature heating loop, an unloading protection unit and a control system. A refrigerant can be distributed to different heating loops according to the proportion, so that continuous adjustable output of low-temperature, medium-temperature and high-temperature heat is achieved, a high-pressure-stage air cylinder keeps low-power-consumption operation under the low-load working condition through an unloading protection structure, the reliability and the energy efficiency level of the system are improved, and the energy efficiency is improved. According to the control method, a low-temperature mode, a high-temperature mode or a mixed mode is selected according to the target temperature, closed-loop adjustment is carried out, the temperature adjusting process is stable and continuous, the invention further discloses a clothes dryer adopting the system, appropriate temperatures can be provided in different drying stages, the drying efficiency is improved, clothes damage is reduced, and the clothes dryer is suitable for being used in different drying stages. And meanwhile, the device has the advantages of compact structure, stable operation and wide application range.

The utility model discloses a supporting block fixing structure of a semiconductor chamber, which comprises a chamber body, a supporting block and a supporting block, and is characterized in that the surface of the chamber body is provided with two vacuum grooves; the fixing assembly is located in the cavity body, and the fixing assembly is used for supporting and reinforcing a frame of the cavity body; the sealing assembly is fixedly connected with the bottom of the chamber body, and the sealing assembly is used for sealing when the chamber body works; and an exhaust pipe of the vacuum pump is communicated with the vacuum tank. According to the supporting block fixing structure of the semiconductor chamber, by means of the arrangement of the fixing assembly, the device adopts the central isolation plate to reliably support the top and the bottom of the inner wall of the chamber body, the strength of the inner wall of the semiconductor chamber is improved, meanwhile, the surface of the central isolation plate is fixed after a first clamping plate and a second clamping plate are embedded into a plug-in folded plate, and the stability of the semiconductor chamber is improved. And a worker can conveniently and quickly install the device.

This invention relates to the technical field of high-pressure heaters and discloses a heat dissipation device for a thick-film high-pressure heater, comprising a flow channel shell assembly, a flow channel heat-conducting component fixedly installed above the flow channel shell assembly, a liquid mounting cavity between the flow channel shell assembly and the flow channel heat-conducting component, and an equipment mounting groove inside the flow channel heat-conducting component; a heat insulation layer, a thick-film heater, and an inorganic heat-conducting layer are fixedly installed inside the equipment mounting groove; the flow channel heat-conducting component is provided with several sets of S-shaped guide fins, and the flow channel shell assembly is provided with a spiral guide component; this invention, through the matching arrangement of the thick-film heater and the inorganic heat-conducting layer, ensures that the thick-film heater is completely placed inside the equipment mounting groove, forming a physical isolation state from the antifreeze in the liquid mounting cavity, preventing direct contact with the liquid, and effectively avoiding damage such as corrosion, erosion, and scaling caused by the antifreeze to the heating element.

The utility model relates to radio frequency power amplifier technical field, concretely relates to a radio frequency power amplifier power supply circuit with bidirectional current drive, including two -way negative voltage protection circuit, second circuit, third circuit, fourth circuit, fifth circuit and sixth circuit, two -way negative voltage protection circuit is used for monitoring main road grid negative voltage Vgs main and peak value grid negative voltage Vgs peak, and is turned off drain electrode power VDS when any road negative voltage loss, second circuit is used for 50V direct current voltage to 12V, third circuit is used for 12V direct current voltage to 5V, fourth circuit is used for direct current 5V conversion direct current 5V, fifth circuit is used for direct current 5V conversion direct current 5.8V, sixth circuit is used for direct current 5V to direct current 2.5V, and increases bidirectional current drive ability, and the power supply of main road grid negative voltage Vgs main. The problem that the existing DC / DC negative voltage chip negative voltage adjustment is complex, current carrying capacity is insufficient and lacks bidirectional current drive ability has been solved.

The utility model relates to the technical field of flue gas filtering devices, and provides a furfural residue boiler with a flue gas filtering device, which comprises a shell, a chimney is arranged at the top of the shell, a filter screen is arranged in the chimney, an annular positioning guide rail is arranged in the chimney, an annular positioning groove is arranged in the annular positioning guide rail, and the flue gas filtering device is arranged in the annular positioning groove. A first opening penetrating through the inner wall of the chimney is formed in one side of the annular positioning groove, a mounting frame is arranged on the periphery of the filter screen, a connecting plate is arranged on the side, close to the first opening, of the mounting frame and extends to the outside of the chimney, and a fixing groove is formed in the side, outside the chimney, of the connecting plate. By means of the technical scheme, the problems that a filter screen of a filter device in the related technology is inconvenient to replace or clean, particulate matter in smoke blocks the filter screen, and the working efficiency of the filter screen is reduced are solved.

The present invention proposes a stirring pot with elastic stirring teeth, which solves the problems in the prior art that the stirring equipment is prone to shaft breakage, the stirring arm and the shovel plate are prone to deformation, and the material is crushed to affect the product quality. The stirring pot comprises a stirring barrel, a vertical stirring shaft is provided in the middle position of the stirring barrel, a plurality of stirring arms are connected to the stirring shaft, a shovel plate is provided at the lower end of the stirring arm, the stirring shaft drives the stirring arm to rotate in a horizontal plane, and the shovel plate is used to stir the material in the stirring barrel, a connecting seat is fixed at the upper end of the stirring shaft, the upper end of the stirring arm is connected to the connecting seat through a hinge shaft, and the extension direction of the hinge shaft is perpendicular to the linear speed direction of the stirring arm; the connecting seat is also provided with elastic parts and limit blocks located on both sides of the hinge shaft, the elastic parts press the stirring arm against the limit blocks with its hinge shaft as the center, the elastic parts are located behind the hinge shaft, and the limit blocks are located in front of the hinge shaft.

The present invention relates to the technical field of paper bag making, and specifically to a four-side-sealed double-outlet feeding device for a bag making machine, comprising: a conveying frame, a conveyor belt is fixedly installed on the inner side of the conveying frame, a lifting cylinder is fixedly connected to the top of the conveying frame, and an edge banding machine is fixedly connected to the bottom end of the lifting cylinder; a feeding device, the outer side of the feeding device is rotatably connected to the outer side of the conveying frame, and the present invention drives the edge banding machine to move through the lifting cylinder, and drives the synchronous rod to slide in the hollow column at the same time, at this time, the upper edge banding machine can drive the lower edge banding machine to move synchronously through the synchronous rod, and perform four-side edge banding operations on the materials on the upper and lower conveyor belts at the same time; the time required to produce the same number of bags is greatly shortened, the output per unit time is increased, and the needs of large-scale production are met. Quality problems such as uneven edge sealing and loose sealing that may be caused by asynchronization are avoided, and the overall quality of the bag is guaranteed.

The utility model provides a tempering furnace for powder metallurgy processing, and belongs to the technical field of tempering furnaces. According to the technical scheme, the furnace comprises a furnace body and a bottom plate, the furnace body is arranged at the top of the bottom plate, a tempering cavity is formed in the furnace body, multiple sets of heating lamps are arranged in the tempering cavity, a containing assembly is arranged above the bottom plate, a mounting plate is arranged below the bottom plate, a rotating assembly is arranged on the mounting plate, and a connecting hole is formed in the top of the bottom plate; the connecting shaft penetrates through the connecting hole to be connected with the containing assembly. Through the arrangement of the placing assembly, multiple sets of workpieces can be placed on the first placing plate and the second placing plate, and the first placing plate and the second placing plate are connected through the detachable connecting support, so that the placing assembly can be adjusted and replaced according to the sizes and shapes of different workpieces; and the problem that a traditional tempering furnace can only conduct tempering machining on one workpiece is solved, and the applicability of the tempering furnace is improved.

The utility model relates to a monitoring device adaptive to various high-speed solenoid valves, a housing is enclosed to form an accommodating cavity, a signal transmission plate is arranged in the accommodating cavity, one end of a vibration audio acquisition unit is inserted in the accommodating cavity and is connected with the signal transmission plate, and the other end of the vibration audio acquisition unit extends to the outside of the accommodating cavity; one end of the pressure acquisition unit is inserted into the accommodating cavity and is connected with the signal transmission plate, and the other end of the pressure acquisition unit extends out of the accommodating cavity; the temperature and humidity acquisition unit is arranged in the accommodating cavity and is connected with the signal transmission plate; the monitoring device is exquisite in structural design, compact in structure, stable in operation and capable of monitoring the high-speed electromagnetic valve in real time; by arranging the vibration audio acquisition unit, the pressure acquisition unit and the temperature and humidity acquisition unit, the working state of the high-speed electromagnetic valve can be monitored in real time, it is ensured that the XRT mining equipment accurately executes target minerals, and the working efficiency and working stability of the XRT mining equipment are improved.

The utility model relates to the technical field of rear steel plate spring, and disclose a kind of rear steel plate spring structure with adjustable pre-tightening force, adjusting mechanism is provided on U-shaped clamping plate, fixed mechanism is provided on adjusting mechanism, adjusting mechanism includes plug-in assembly and restriction component, plug-in assembly includes cylinder barrel and threaded rod, and the periphery of cylinder barrel top is respectively fixedly connected with telescopic plugboard, long rod top is fixedly connected with handle.The rear steel plate spring structure with adjustable pre-tightening force, threaded rod is inserted into steel plate spring, the stress state of steel plate spring can be changed, to realize the adjustment of pre-tightening force, by the rotating number of control screw rod, the purpose of controlling pre-tightening force size can be achieved, when telescopic plugboard is stretched and inserted in slot, square board is inserted in square slot, clamping block is clamped in clamping groove, the position of threaded rod can be fixed, avoid long-term to appear loose and fall off situation, guarantee that steel plate spring can exist buffering, shock absorption and support vehicle body's effect.

The utility model discloses a motor turntable with a dual heat dissipation structure, which comprises a shell with an accommodating cavity, the shell comprises a bottom plate (11), a surrounding plate (12) fixed on the bottom plate (11) and a cover plate (13) fixed at the top end of the surrounding plate (12), and an external heat dissipation device is arranged on the outer side surface of the surrounding plate (12); the motor stator (2), the motor rotor (3) and the mandrel (4) are coaxially arranged in the containing cavity, and the motor stator (2) is fixed to the inner wall of the surrounding plate (12); the bearing platform (5) protrudes out of the shell relative to the cover plate (13), and the bearing platform (5) is fixedly connected with the motor rotor (3) and the mandrel (4); a built-in radiator (6) is arranged between the motor rotor (3) and the core shaft (4) and is fixed on the bottom plate (11); a bearing is arranged between the built-in radiator (6) and the mandrel (4), and the built-in radiator (6) supports the bearing, so that the mandrel (4) can rotate along with the motor rotor (3) and the bearing platform (5) according to the bearing. The external radiator and the internal radiator cooperate with each other and act together to provide efficient heat dissipation performance for the motor rotary table, it is ensured that heat generated in the working process of the motor rotary table is discharged in time and cannot be gathered in the motor rotary table, and the motor rotary table can be kept in a stable and reliable working state and has the long service life.