17results about How to "Reduce fluid pressure" patented technology

The utility model provides a fragrance machine, including the casing and be equipped with the bottle body of holding cavity inside, be equipped with the atomizing head subassembly in the casing, the atomizing head subassembly with the bottle body connection, the atomizing head subassembly includes liquid guide core rod, atomizing piece, atomizing seat and casing pipe, atomizing seat with the bottle body connection, the casing pipe is equipped with the liquid guide core rod, atomizing piece, atomizing seat and casing pipe. A containing cavity is formed in the atomization base, a liquid accumulation space which is communicated with the containing cavity and located below the containing cavity is formed in the atomization base, the sleeve is located in the atomization base, the shell is provided with a mist outlet, the sleeve is located on the side, away from the mist outlet, of the atomization piece, the liquid guiding core rod is inserted into the sleeve, and the liquid guiding core rod is inserted into the sleeve. The first end of the liquid guide core rod is communicated with the liquid accumulation space, and the second end of the liquid guide core rod abuts against the atomization piece. According to the fragrance machine disclosed by the utility model, the liquid guide core rod is inserted into the sleeve, so that the liquid perfume in the liquid accumulation space is not easy to leak out of the mist outlet, and the effect of reducing leakage is achieved.

The electromagnetic pneumatic control valve comprises a main valve body provided with a valve port; the valve cover is arranged on the valve port in a covering manner, and an inner cavity is formed above the valve port; the valve is characterized by further comprising a diaphragm which divides the inner cavity into an upper cavity and a lower cavity, and the diaphragm opens and closes the valve port based on the change generated by the pressure difference between the upper cavity and the lower cavity; and a ventilation channel is arranged in the pilot electromagnetic valve, and the pilot electromagnetic valve comprises an electromagnetic valve element. The electromagnetic pneumatic control valve has the advantages of high response speed of a pilot electromagnetic valve and multiple types of circulating media of the pneumatic control valve, and is simple in structure, small in size and convenient to install by a user. The fluid control system applying the electromagnetic pneumatic control valve is characterized by comprising the electromagnetic pneumatic control valve, a pressure reducing valve and a check valve, a ventilation channel in the pilot electromagnetic valve is connected with a compressed air source through an air pressure regulator. According to the fluid control system, the valve opening and closing response speed after the fluid control system switches the power-on and power-off states of the coil is increased.

The soft coal seam punching while drilling and retreating type slotting integrated drill bit comprises a punching assembly and a sealing assembly, the punching assembly comprises a drill bit and a tailstock, a first water guide pipe is arranged at the tail of the drill bit, a first end socket is connected to the tail of the first water guide pipe, a first water guide hole is formed in the first end socket, and a second water guide hole is formed in the tail of the first water guide pipe; the head of the drill bit is provided with a water spraying hole communicated with the first water guide pipe, a flow collecting cavity is formed in the tailstock, the tail of the flow collecting cavity is connected with a water inlet pipe, the head of the flow collecting cavity is connected with a second water guide pipe, and the drill bit is connected with the tailstock through a straight rod. The sealing assembly comprises ring sleeves installed on the second water guide pipe and the first water guide pipe respectively, sealing bags and bag filling mechanisms used for controlling the sealing bags are installed on the ring sleeves, and a slotting assembly is arranged between the two ring sleeves.

The utility model discloses a mechanical anti-erosion PDC (Polycrystalline Diamond Compact) drill bit, which relates to the technical field of drilling, and comprises a drill bit part, a handle part and an anti-erosion component, the handle part is connected to the lower end of the drill bit part, and a central flow channel communicated with the drill bit part and a branch flow channel for communicating the central flow channel with the outside are arranged along the axial direction of the handle part; the anti-erosion assembly is arranged in the branch flow channel, when the fluid pressure of the center flow channel is larger than the set pressure, the anti-erosion assembly enables the center flow channel to be communicated with the branch flow channel, and when the fluid pressure of the center flow channel is smaller than the set pressure, the anti-erosion assembly enables the branch flow channel to be closed. The anti-erosion assembly is arranged in the branch flow channel communicated with the center flow channel, so that when the fluid pressure drop of the drill bit exceeds a set pressure value, part of fluid in the center flow channel can enter the branch flow channel through the anti-erosion assembly, the impact force of the fluid acting on the drill bit part is reduced, and the risk of excessive erosion to the drill bit is reduced.

The high-tightness butterfly valve with the buffering function comprises a connecting plate, through holes are symmetrically formed in the connecting plate, the outer side of the connecting plate is fixedly connected to the side wall of an inner cavity of a butterfly valve shell in a sealed mode, a sealing plate is movably arranged on the left sides of the through holes, and a push-pull rod is fixedly connected to the middle of the right end of the sealing plate; the right side of the push-pull rod is movably sleeved with a limiting ring. According to the integral structure provided by the embodiment of the invention, the sealing surface of the sealing plate is positioned on the opposite surface of the liquid inlet, so that the impact force on the sealing ring is greatly reduced, and the service life of the sealing ring can be prolonged; the transmission motor rotates to drive the spiral impeller to rotate, so that the spiral impeller rotates reversely, the liquid inlet entering the butterfly valve shell is pushed, the liquid entering the butterfly valve shell is buffered, the pressure of the liquid entering the butterfly valve shell is reduced, the efficient buffering effect is achieved, the impact force on the sealing plate is reduced, and the sealing plate is protected.

The invention discloses a multi-layer composite springback corrugated board and a production method thereof, and aims to provide the multi-layer composite springback corrugated board which is large in elastic coverage range, simple in structure and high in elastic buffering performance. According to the technical scheme, the multi-layer composite springback corrugated board is characterized in that a first springback layer is arranged in the middle of a corrugated coating layer, and a second springback layer is arranged in the middle of the corrugated coating layer; the second springback layer is arranged between the first springback layers to form a composite springback interlayer, the first springback layer is provided with a first springback space after the second springback layer is stressed, when the second springback layer is stressed to the maximum value, the second springback layer is further provided with a second springback space, the inner paper and the outer paper extrude the first springback layer, and the composite springback interlayer is formed. The first springback layer extrudes the second springback layer to form a first springback space and a second springback space, the first springback space and the second springback space are compressed, when pressure acting on the inner paper and the outer paper disappears, the second springback layer forms acting force on the first springback layer again, springback reset is formed, and therefore the optimal springback effect on the corrugated board is achieved, and the service life of the corrugated board is prolonged. The invention is suitable for the technical field of corrugated board production and manufacturing.

The application relates to a four-way regulating device and a temperature control system applying the same, and relates to the technical field of temperature regulating devices, which comprises a valve shell, a rotating shaft, a valve cavity formed in the valve shell, the rotating shaft being rotationally connected to the valve shell and inserted into the valve cavity, four valve holes being arranged on the valve shell and being communicated with the valve cavity, a movable valve plate being fixedly arranged on the rotating shaft, a static valve plate being arranged in the valve cavity of the valve shell, the static valve plate being located between two adjacent valve holes and being in sliding sealing connection with the rotating shaft, the movable valve plate being in sliding sealing connection with the cavity wall of the valve cavity, and the movable valve plate and the static valve plate being capable of separating the valve cavity to form two independent spaces. The application has the effects of reducing the stress of the movable valve plate, reducing the deformation risk caused by fluid pressure under long-term work, and prolonging the service life of the four-way regulating device.

The invention belongs to the technical field of sealing, and particularly relates to a self-pressurization energy storage type seal and high-pressure pneumatic seal combined sealing assembly which comprises a self-pressurization energy storage type seal and a high-pressure pneumatic seal. The self-pressurization energy storage type seal and the high-pressure pneumatic seal are combined in series to be used for a working environment needing to isolate high-pressure liquid and high-pressure gas media, an ideal sealing state is achieved, the self-pressurization energy storage type seal is arranged on the side facing the liquid, and the high-pressure pneumatic seal is arranged on the side facing the gas. The self-pressurization energy storage type seal comprises a sealed shaft (1), a swallow-tail-shaped clamping sleeve (2), a V-shaped spring (3), a triangular block (4) and a sealing cavity (5). The high-pressure pneumatic seal comprises a pneumatic base body (6), an X-shaped ring (8), a large O-shaped ring (9) and a small O-shaped ring (10). Compared with a traditional sealing structure, the sealing assembly has a better high-pressure-resistant sealing effect.

The float collar comprises a valve cavity with a valve port in the top, a back-pressure valve arranged in the valve cavity and a plurality of baffles arranged along the inner wall of the valve cavity in a circumferential mode, the back-pressure valve is provided with a plug capable of plugging the valve port, and the baffles are arranged below the plug and can abut against the lower surface of the plug through movement. And therefore, a plugging surface is formed with the plug. The float collar can form a blocking face used for blocking reverse flowing water in a valve cavity, the reverse sealing performance of the float collar is enhanced, and the efficiency and safety of well cementation operation are improved.

This utility model provides a high-strength shut-off valve with diversion and pressure reduction capabilities, including a valve body. The valve body, diversion counteractor, and discharge port are integrally integrated and interconnected. A valve cover assembly is installed on the valve body. The lower end of a drive valve rod installed on the valve cover assembly extends into the valve body and is connected to a valve disc disposed within the valve body. The valve disc is located above a valve seat inside the valve body. A handwheel is fixedly installed on the upper end of the drive valve rod. This utility model incorporates a diversion counteractor within the valve body. A diamond-shaped diversion platform divides the liquid into upper and lower flow channels. A trapezoidal flow-blocking guide plate and the platform form a double diversion counteracting path. This effectively reduces pressure through liquid kinetic energy offsetting and also blocks and disperses impurities, adapting to complex working conditions and improving system stability and safety.

The application relates to the technical field of tobacco processing equipment, and discloses a glue storage device for a forming machine, which comprises a glue storage tank, an opening is formed in the top of the glue storage tank, a communication port is formed in the bottom of the glue storage tank, a valve is arranged on the communication port, a pipe body is in communication with the communication port, a cover body is arranged on the opening and detachably and sealingly connected with the edge of the opening, a pressure regulating structure for changing the liquid pressure in the glue storage tank is arranged on the cover body, a through hole is formed in the cover body and used for allowing the driving end of the pressure regulating structure to enter, and a supporting frame is fixedly connected with the bottom of the glue storage tank. The glue storage device is matched with the pipe body to realize glue supplement for the forming machine, the situation that the middle line glue is manually filled into the forming machine is avoided, and the glue supplement work for the forming machine is convenient and fast.

The invention relates to the technical field of steel cofferdam construction, and discloses a lock catch structure of a steel pipe pile and a using method thereof.The lock catch structure of the steel pipe pile comprises a supporting mechanism, the supporting mechanism further comprises a steel pipe pile body, an O-shaped lock catch pipe is fixedly connected to the outer wall of the steel pipe pile body, and a C-shaped lock catch pipe is fixedly connected to the outer wall of the steel pipe pile body; when the steel pipe pile body is used in a big river, a worker inserts the O-shaped lock catch pipe into the C-shaped lock catch pipe to enable the two steel pipe pile bodies to be connected together, and at the moment, due to the fact that the outer wall size of the O-shaped lock catch pipe is smaller than the inner wall size of the C-shaped lock catch pipe, when the steel pipe pile body is inserted and driven, the O-shaped lock catch pipe cannot make contact with the C-shaped lock catch pipe; when the steel pipe pile body is inserted and driven in place, the O-shaped lock catch pipe does not make contact with the C-shaped lock catch pipe, friction resistance between lock catches can be reduced, the steel pipe pile can sink to the designed depth more easily, and the piling speed is increased.

The invention relates to the technical field of castings, in particular to an adjusting valve body casting which comprises a body, an inlet is formed in the left end of the body in a one-time mode, an outlet is formed in the right end of the body in a one-time mode, an installation opening is formed in the top end of the body in a one-time mode, a pressure adjusting valve is installed in the installation opening, and a valve cavity is formed between the inlet and the outlet in a one-time mode. The inner end of the pressure regulating valve is located in the valve cavity, a first flowing cavity is formed between the bottom of the valve cavity and the inlet, a second flowing cavity is formed between the top of the valve cavity and the outlet, and in order to achieve the pressure relief function, the pressure regulating valve is simple in structure; in order to enable the control panel to be automatically opened, a power source of the control panel is ingeniously combined to the manual pressure regulating valve, the pressure regulating valve can manually regulate the pressure and the flow speed of the valve body, and when manual operation is not needed, the control panel is driven to automatically complete the opening action when the spring assembly in the stepped hole automatically induces that the pressure intensity of fluid rises.

The invention provides a centrifugal multiphase multiphase pump which comprises a shell and an impeller, the shell is provided with a pump cavity for installing the impeller, the pump cavity is divided into a front cavity and a rear cavity by a rear cover plate of the impeller, the front cavity is a space, close to an inlet, in the pump cavity, and the rear cavity is a space, close to a driving end, in the pump cavity; the rear cover plate extends into the rear cavity, and part of blades in the impeller extend in the axial direction. A cylindrical wall surface is formed between the position of the original rear cover plate and the extended rear cover plate on the outer side of the hub of the impeller, and a cavity formed by the cylindrical wall surface and part of the axially extending blades enables a conveying medium to form through flow and circulating flow, so that the conveying efficiency of the gas-liquid two-phase medium is improved. The pump can be used for pumping liquid with a solid and gas mixture, the flow characteristic of the liquid is effectively improved through the impeller structure of the pump, and the transportation efficiency of the liquid with the gas mixture is remarkably improved.

The invention relates to the technical field of data storage, in particular to shipborne ship data recording and storing equipment which comprises a storage frame, and a detachable cover plate is arranged at the top end of the storage frame; and the damping mechanism comprises a piezoelectric ceramic piece used for sensing vibration and generating electricity, a supporting plate is slidably connected to the inner wall of the storage frame, and a black box is detachably arranged at the top end of the supporting plate. Mechanical vibration is converted into electric energy through the piezoelectric ceramic piece. When the ship jolts and vibrates, the piezoelectric ceramic pieces are extruded or stretched, so that current is generated. The current is amplified and then led into the first electromagnetic plate, the suspension height of the supporting plate is adjusted by adjusting the repulsive force of the first electromagnetic plate to the first permanent magnet plate, meanwhile, the current is also led into the second electromagnetic plate, the second permanent magnet plate drives the damping plate to extrude the supporting plate, and vibration energy is dissipated through friction between the supporting plate and the damping plate.

The present invention relates to the technical field of data storage, and in particular to a ship-borne ship data recording and storage device, comprising a storage frame, a removable cover plate is arranged on the top of the storage frame; a shock absorbing mechanism, the shock absorbing mechanism comprises a piezoelectric ceramic sheet for sensing vibration and generating electricity, and a support plate is slidably connected to the inner wall of the storage frame, and a black box is detachably arranged on the top of the support plate. The present invention converts mechanical vibration into electrical energy through piezoelectric ceramic sheets. When the ship bumps and vibrates, the piezoelectric ceramic sheet is squeezed or stretched, thereby generating current. This current is amplified and then passed into the first electromagnetic plate, and the suspension height of the support plate is adjusted by adjusting the repulsive force of the first electromagnetic plate on the first permanent magnet plate. At the same time, the current is also passed into the second electromagnetic plate, so that the second permanent magnet plate drives the damping plate to squeeze the support plate, and the vibration energy is dissipated through the friction between the support plate and the damping plate.

The invention belongs to the technical field of sealing, and particularly relates to a combined high-pressure pneumatic seal, which is particularly important to design a pneumatic seal structure because the difficulty of sealing high-pressure gas is far greater than that of liquid. According to the combined pneumatic sealing structure of the sawtooth-shaped structure, the surface part, making contact with the cylinder barrel, of the pneumatic base body is designed to be of the sawtooth-shaped structure, a traditional smooth plane is replaced, and the groove is machined in the middle and used for installing the X-shaped ring; the sawtooth-shaped structure mainly reduces the pressure intensity of fluid in the seal through the echelon property of a plurality of sealing cutting edges, two symmetrical lateral open type grooves are designed in the lower end of the pneumatic base body and used for installing large O rings respectively, and meanwhile a sealing groove is machined in the middle of the bottom end of the pneumatic base body and used for installing small O rings. And the purpose of remarkably improving the backpressure pre-tightening force and the sealing effect is achieved.