72 results about "Valve guide" patented technology

This invention discloses a centerless cylindrical grinding machine device for valve guides, belonging to the field of valve guide grinding. The device is used for infeed grinding of valve guides and includes a machine table, an adjusting frame and a grinding head holder respectively disposed on both sides of the machine table, and a workpiece support frame disposed between the adjusting frame and the grinding head holder and fixedly mounted above the machine table. This invention achieves axial elastic limiting of the valve guide through a clamping assembly and a reversing assembly, and, in conjunction with radial support from the workpiece support frame, effectively suppresses grinding movement and wobble of slender workpieces, improving grinding stability, coaxiality, and dimensional accuracy. After processing, it can automatically switch to a clamping and transfer mode for automatic unloading, achieving a high degree of automation. Simultaneously, cutting fluid can be directionally introduced into the inner hole of the valve guide and overflowed from a high position, forming internal convection heat transfer and significantly improving the cooling effect. After grinding, by flipping the drain hole, residual fluid in the inner hole is quickly drained by gravity, further stabilizing machining accuracy.

The utility model discloses a dismounting tool for a valve guide pipe of a cylinder cover. The dismounting tool comprises a supporting frame, the lifting platform is vertically arranged in the supporting frame in a sliding mode, a jack is fixedly connected to the top of the lifting platform, an installation pipe used for installing an ejector rod is fixedly connected to the bottom of the lifting platform, and a reset piece is fixedly connected between the lifting platform and the connecting cross beam. Notches at the two ends are clamped on the outer side of the supporting frame, it is guaranteed that the lifting table can vertically slide, and operation is easy, convenient and stable. A reset piece (spring) is fixedly connected between the lifting table and the connecting cross beam, after the jack extends to eject the valve guide pipe out, the spring can drive the lifting table to automatically reset, a fixing plate in the clamping assembly is adjustably installed, and through arrangement of a rotating base and a limiting arc plate, the angle of a workpiece can be flexibly adjusted, so that the valve guide pipe corresponds to the position of an installation pipe.

A fluid management system includes a fluid management controller and a fluid dispenser. The controller authorizes control of the one or more fluid management components over a wireless interface. A dispensing meter can be activated by an authentication device. The fluid meter includes a cartridge valve with a valve cartridge and a valve stem. The cartridge valve guides the valve stem and provides the only sealing surface for the dynamic seals and control seal disposed on the valve stem. The handheld meter dispenses through a nozzle, which includes an overmolded stem tip that generates a laminar fluid flow as the fluid exits the nozzle. The handheld fluid meter includes circuitry configured to invert the orientation of a visual output provided by a display of the handheld fluid meter to facilitate installation of the handheld fluid meter for use in an oil bar application.

The embodiment of the invention provides an air cooling exhaust valve and an internal combustion engine exhaust valve mechanism. The exhaust valve is composed of an upper valve rod, a valve body and a valve ring, the upper valve rod of the air valve is connected with the valve body of a rod hollow structure through friction welding, radial cooling drill holes are machined in the bottom and the arc position of the valve body, and cooling air exhaust holes are formed in the position close to the junction of a low-stress valve disc and the valve rod. And the valve ring and the valve body are welded to block and seal the drill hole at the valve disc. Cooling air flow channels are designed on the cylinder cover and the air valve guide pipe, and cooling air is conveyed to the exhaust valve. Cooling air is fed into a valve rod center hole and discharged into an air channel, the flow channel at the valve rod is simple in structure and large in flow section, the cooling drill holes cover the firepower face with high heat load and the round corner of the valve disc, the cooling effect is good, and the influence of the flow channel arrangement on the structure and rigidity of the air valve is small.

A copper alloy for enhancing thermal conductivity and strength in a valve seat insert or guide material is provided. The copper alloy includes 3.0 wt. % to 5.0 wt. % iron, 3.0 wt. % to 5.0 wt. % zinc, and optionally 0.0 wt. % to 2.0 wt. % tin, based on the total weight of the copper alloy. The copper alloy can be water atomized to form particles, and the copper alloy particles can be blended with other particles and then pressed to form a slug. The slug containing the copper alloy is typically disposed between two porous parts formed of steel or another iron-based material to form a stack. The stack is sintered or otherwise heat-treated such that the copper alloy melts and infiltrates the pores of the porous parts. The copper alloy infiltrant is distributed more equally between the porous materials in the stack compared to prior art.

The utility model provides an overhead valve guide air inlet type two-stroke engine which solves the problems that waste gas cannot be fully swept away due to the fact that a four-stroke working mode of a traditional overhead valve type engine is improved into a two-stroke working mode, and combustion efficiency and emission performance are poor. According to the technical scheme, the overhead valve guide air inlet type two-stroke engine comprises an engine body set and an air distribution mechanism provided with an overhead valve, an air guide pipe moving along with an air inlet valve rod through a support sleeve is arranged on the air inlet valve rod of the air distribution mechanism, the air guide pipe is close to the head of the air inlet valve, and a front end air outlet is reserved between the front end of the air guide pipe and the head of the air inlet valve. The rear port of the gas-guide tube communicates with the gas inlet channel; an air inlet cam of the air distribution mechanism is provided with an air inlet cam protruding part which pushes the front end of an air guide pipe of an air inlet valve to stretch into an inner cavity of the air cylinder body. By guiding and scavenging the inlet air, the engine can go deep into the cylinder body to purge the combusted waste gas, open the exhaust valve to work and fully sweep the waste gas, so that the scavenging efficiency is greatly improved, and the combustion efficiency and the emission performance are improved.

The invention provides an engine. The engine comprises an air cylinder body, an air cylinder cover and an air intake and exhaust system. The cylinder cover is connected with the cylinder body and forms a combustion chamber with the cylinder cover, the cylinder cover comprises a ventilation channel and a valve guide pipe, the ventilation channel is communicated with the combustion chamber, and the valve guide pipe forms a channel communicated with the ventilation channel; the air inlet and exhaust system comprises an air valve penetrating through the channel, and at least part of the air valve extends into the air duct and controls the air duct to be communicated with or disconnected from the combustion chamber. The air inlet and exhaust system further comprises a valve sealing ring, the valve sealing ring is installed on the air cylinder cover and located at the joint of the air passage and the combustion chamber, the valve sealing ring is suitable for containing at least part of the valve, a cylindrical throat opening is defined by the inner edge of the valve sealing ring, and an included angle larger than 0 degree is formed between the axis of the throat opening and the axis of the passage. Through the arrangement, the air inlet efficiency of the air inlet channel is improved, fuel oil and air are fully mixed, and the combustion efficiency of an engine is higher.

The present invention provides a lubrication structure for an internal combustion engine that ensures the supply of lubricating oil to the valve train sliding members and suppresses the progression of wear as much as possible. [Solution] A lubrication structure 1 for an internal combustion engine comprising a camshaft 4 supported by a camshaft housing 5 and a cam cap 6, a valve member 8 having a valve guide 10 that supports a valve 9 that opens and closes when pressed by a cam portion 4', lubricating oil 3 supplied to the valve member 8, and an oil pump for supplying the lubricating oil 3, wherein an oil passage for supplying the lubricating oil 3 to the valve guide 10 by the oil pump is formed in at least one of the camshaft housing 5 and the cam cap 6, and at least one outlet portion 18 of the oil passage is formed in the side portion 19 parallel to the central axis of the cylinder on at least one of the camshaft housing 5 and the cam cap 6, and the lubricating oil 3 that is scattered from the outlet portion 18 is supplied toward the valve guide 10 so that it is scattered downward below the cam portion 4'.

The pressing head comprises a shaft seat and the pressing head, a connector of the pressing head is detachably connected with the shaft seat, the pressing head comprises a column body, the protruding connector is arranged on the front end face of the column body, a second cavity and a first cavity are sequentially formed in the rear end face of the column body from outside to inside, and the first cavity is communicated with the second cavity. The second cavity and the first cavity are coaxially arranged, the diameter of the second cavity is larger than that of the first cavity, an insertion head is arranged at the bottom of the first cavity and extends backwards, and the head of the insertion head penetrates out of the second cavity. The utility model has the beneficial effects that the pressure head, the valve oil seal and the shaft seat are assembled, then the insertion head is inserted into the valve guide pipe, and the shaft seat is pressed forcibly, so that the valve oil seal is sleeved on the valve guide pipe, the whole process is simple to operate, the workload is reduced, the valve oil seal can be used on other types of machines by replacing a front end pressure head, and the cost is saved.

The invention discloses cylinder cover valve guide pipe seat ring press-fitting equipment and a working method thereof. The cylinder cover valve guide pipe seat ring press-fitting equipment comprises a press-fitting equipment body, an inlet valve guide pipe seat ring press-fitting assembly and an exhaust valve guide pipe seat ring press-fitting assembly. The air inlet valve guide pipe seat ring press-fitting assembly comprises an air inlet valve seat ring pressing head mechanism, an air inlet valve guide pipe seat ring positioning mechanism, an air inlet valve guide pipe pressing head mechanism and a first operation panel. The exhaust valve guide pipe seat ring press-fitting assembly comprises an exhaust valve seat ring pressing head mechanism, an exhaust valve guide pipe seat ring positioning mechanism, an exhaust valve guide pipe pressing head mechanism and a second operation panel. The air inlet valve seat ring pressing head mechanism provides a power source for press fitting of an air inlet valve seat ring. The air inlet valve guide pipe seat ring positioning mechanism is used for fixing an air cylinder cover, an air inlet valve guide pipe and an air inlet valve seat ring. The air inlet valve guide pipe pressing head mechanism provides a power source for press fitting of an air inlet valve guide pipe. The press-fitting device can be compatible with press-fitting of various cylinder cover guide pipes and seat rings, model changing is easy, the press-fitting precision and the automation degree are high, and operation and maintenance are convenient and fast.

The utility model discloses an automobile engine valve spring rotation stopping structure which comprises a valve guide pipe, a valve spring, a rotation stopping rod and a locking rod, one end of the rotation stopping rod is fixedly connected with a connecting plate, and one side of the connecting plate is fixedly connected with a first electromagnet connected with the valve guide pipe in a matched mode. A connecting assembly is arranged at one end of the locking rod and used for fixing the locking rod to the valve spring, the connecting assembly comprises a mounting frame fixedly connected to the locking rod, two clamping plates arranged on the inner side of the mounting frame and a positioning assembly, one clamping plate is fixedly connected to the mounting frame, and the other clamping plate is fixedly connected to the positioning assembly. The positioning assembly is used for positioning the other clamping plate on the outer side of the valve spring. Through the above structure, the design of the rotation stopping rod and the locking rod realizes rapid and lossless disassembly and assembly through the first electromagnet, the second electromagnet and the clamping plate structure, the operation is simple and convenient, the versatility is strong, the device can be repeatedly used, the detection efficiency and accuracy are improved, and the device can be better suitable for a valve spring stress test scene needing disassembly and assembly.

The present application relates to the technical field of fluid control valve, specifically to a pilot pressure reducing valve pilot pressure pipe length optimization design method. The present application uses the force balance equation containing time lag to obtain the critical time lag of the system generating periodic oscillation, then establishes the length constraint equation of the pilot pressure pipe through the relationship between the pipe length and the critical time lag, finally uses the iterative method to obtain the maximum allowable length of the pilot pressure pipe, and then outputs the actual length according to the field installation requirement, which can provide adjustment suggestions for different installation conditions and has wide adaptability. At the same time, the reasonable range of the pilot pressure pipe length can be determined at the design stage, the pilot pressure pipe can be avoided to be replaced repeatedly on site, the installation cost is reduced, and the consistency of the valve is improved.

A suspension damper includes a housing bounding a primary chamber and including: an inner sidewall that encircles the primary chamber; an outer sidewall that encircles the inner sidewall so that a bypass channel is disposed therebetween; and a plurality of ports being longitudinally spaced apart along the inner sidewall and extending through the inner sidewall so as to provide fluid communication between the primary chamber and the bypass channel. A main piston having a compression port is disposed within the primary chamber and a control valve assembly is disposed adjacent to the main piston. The control valve assembly includes a valve guide and a control valve with a valve compartment bound therebetween. The control valve assembly is movable between a first position where the control valve is positioned toward the main piston and a second position wherein the control valve is moved away from the main piston.

This oil-cooled screw compressor includes a screw rotor, a casing, a slide valve, and a slide valve guide. The casing includes a bearing chamber, a rotor chamber, a suction space, and a discharge space. When moving to the discharge space side, the slide valve opens an inlet of a bypass passage to an inner wall surface of the rotor chamber, the bypass passage communicating the rotor chamber and the suction space. The slide valve guide includes a guide surface and a first groove provided on the guide surface and communicating with the discharge space. The slide valve includes a sliding surface facing the guide surface, and a second groove provided on the sliding surface. When the inlet of the bypass passage is opened, and the second groove faces the first groove and a through-hole opening to an inner surface of the casing, a communication passage including the first groove, the second groove, and the through-hole communicates the discharge space with the bearing chamber.

This utility model discloses a diaphragm rupture alarm device for a diaphragm metering pump, relating to the field of diaphragm rupture alarm technology. The device includes a pressure gauge connected to the first end of a tee via a first double-threaded nut. The second end of the tee is connected to a venting and draining assembly. The third end of the tee is connected to a valve guide sleeve via a second double-threaded nut. The valve guide sleeve has a valve ball guide hole that communicates with the interior of the tee. The valve guide sleeve is connected to an air / liquid inlet assembly, which is connected to the diaphragm metering pump. This invention solves the problem that existing pressure gauge-type alarm devices are inconvenient for implementing venting and draining functions.

The invention discloses a valve guide pipe double-end-face grinding device, and belongs to the field of grinding, the valve guide pipe double-end-face grinding device comprises a grinding mechanism and a finishing mechanism, the grinding mechanism comprises two sets of grinding equipment arranged in a rotating mode, the grinding equipment comprises grinding wheels arranged in a sliding mode, and the finishing mechanism comprises a plurality of first finishing knives arranged in a sliding mode; the dressing mechanism further comprises an opening and closing type dustproof door, the opening and closing type dustproof door comprises a first turnover door and a second turnover door which are rotatably arranged, and a first compensation plate and a second compensation plate which are slidably arranged. And material waste caused by single-face grinding in a traditional structure is avoided, and the overall utilization rate of the grinding wheel is greatly increased.

The valve guide pin shaft comprises a guide pin shaft body, oil discharge holes and an oil injection port and further comprises a threaded port, a threaded head and a plug, the oil discharge holes are formed in the top of one side of the guide pin shaft body, the threaded port is formed in the top of the guide pin shaft body, and the oil injection port is formed in the bottom of the threaded port. The oil injection port is communicated with the oil discharge hole, the threaded port is in threaded connection with a corresponding threaded head, and a plug corresponding to the oil injection port is arranged at the bottom of the threaded head. The guide pin shaft mechanism with the lubricating structure is provided for the valve, workers can be helped to discharge lubricating oil attached to the surface of the guide pin shaft under the condition that a valve shell and a valve seat are not dismantled, the lubricating effect of wire sleeving between the guide pin shaft and a plate in the valve body is guaranteed, and the service life of the guide pin shaft is prolonged. Friction loss between the guide pin shaft and a plate in the valve body is reduced, and the operation stability of the valve is guaranteed.

The medium-high speed ship diesel engine cylinder cover machining device comprises a base plate, and a multifunctional mechanical arm is arranged on the rear side of the top of the base plate. Through cooperative use of the clamping and overturning mechanism, the abutting mechanism, the first mounting mechanism, the second mounting mechanism and the third mounting mechanism, valves on cylinder cover bodies are automatically mounted, the device is also suitable for assembling the cylinder cover bodies with different sizes and different valve positions, the practicability of the device is improved, and during assembling, the assembling efficiency is improved. The sealing rubber pad at the bottom of the chassis is in contact with a valve guide hole, the phenomenon that the valve is damaged due to hard contact between the sealing rubber pad and the guide hole is avoided, and when the two sets of clamping pieces are in an installation state, the bottom of the limiting piece is in contact with the top of a valve rod, the outer wall of the limiting piece is attached to the inner semicircular wall of the clamping piece, and the inner wall of the limiting ring is attached to the outer semicircular wall of the clamping piece. The position deviation of the clamping piece is avoided, the assembling accuracy is improved, and automatic operation is achieved in the whole process.

The utility model discloses a positioning device for numerical control machine tool machining, and relates to the technical field of positioning devices. The device comprises a machine table, a machining table is arranged in the machine table, a positioning assembly is arranged at the top of the machining table, a reaming assembly is arranged at the top of the machine table, an elastic pushing assembly is arranged on the outer side of the reaming assembly, and inserting fine adjustment assemblies are arranged at the pushing end of the elastic pushing assembly and the moving end of the positioning assembly. According to the valve guide pipe hole broaching device, the plugging fine adjustment assembly is driven by the broaching assembly and the elastic pushing assembly to move downwards, so that the plugging fine adjustment assembly can conduct secondary positioning on the positioning assembly, and then the broaching assembly begins to conduct broaching operation on a valve guide pipe hole; through the arrangement, the phenomenon that the chambering end of the chambering assembly and the valve guide pipe hole are staggered due to initial alignment errors or machine tool vibration is avoided, and therefore the overall precision of the chambering operation of the valve guide pipe hole can be guaranteed.

The utility model relates to a finish machining combined cutter for a valve guide pipe and a valve seat of a cylinder head, which is characterized by comprising a guide pipe reamer, a cutter base body and a cutter handle, the guide pipe reamer comprises a blade part and a base body connecting part, the blade part comprises a blade head and a blade rod which are connected into a whole, the blade rod is fixedly connected with the base body connecting part, and the cutter handle is fixedly connected with the blade head. The cutter base body is provided with a blade rod connecting hole and a reamer connecting inner hole which are coaxially arranged, the conduit reamer is matched and connected with the cutter base body, meanwhile, the base body connecting part is matched and in threaded connection with the reamer connecting inner hole, the blade rod is in Morse taper fit with the blade rod connecting hole, and the tail part of the cutter base body is detachably connected with the cutter handle. Radial deflection of the guide pipe reamer does not need to be adjusted, tool changing time is short, and efficiency is high.

The utility model belongs to the technical field of valves, and particularly relates to a positioning device for on-line replacement of an irradiation-resistant valve guide rail. Comprising a positioning plate, a stand column, a connecting plate, a handle, a lead screw support, a hand wheel, a lead screw, a connecting block, a connecting rod and a guide rail guiding device, the positioning plate is placed on a valve seat, the stand column is installed on the positioning plate, the connecting plate is installed on the stand column, the handle is installed on the connecting plate, and the lead screw support is installed on the connecting plate. The lead screw is fixed to the lead screw support, the lower end of the lead screw is installed on the positioning plate, the hand wheel is installed at the top end of the lead screw, the connecting block is installed on the lead screw, and the connecting rod is connected with the connecting block. The utility model has the beneficial effects that the sealing surface of the valve seat of the gate valve is taken as an installation reference, the positioning deflection of the valve guide rail is effectively prevented, the gate plate is ensured to keep centering when pressing the valve seat, and the gate plate and the valve seat are fully attached to realize sealing.

The utility model relates to the technical field of fuel gas equipment, and discloses a leakproof pressure regulating box which comprises a pressure regulating box body, a plurality of pressure gauges are fixedly connected to the inner wall of the pressure regulating box body, a three-type gas storage tank is fixedly connected to the inner wall of the pressure regulating box body, a two-piece ball valve is fixedly connected to the bottom of the three-type gas storage tank, and the two-piece ball valve is fixedly connected to the bottom of the three-type gas storage tank. The inner wall of the two-piece type ball valve is fixedly connected with a pressure reducing valve guide pipe, the other end of the inner wall of the pressure reducing valve guide pipe is fixedly connected with a pressure reducing valve body, the inner wall of the pressure reducing valve body is fixedly connected with a pressure reducing valve element, and the top of the pressure reducing valve element is fixedly connected with a pressure reducing valve diaphragm. According to the pressure reducing valve, the design of a built-in pressure reducing system is adopted, opening and closing are balanced, the defects that a small-caliber pressure reducing valve is poor in stability and not easy to control are overcome, and the pressure change amplitude can be controlled.

The intake valve (140) assembly (100) includes a housing (122), an elongated valve guide (194) disposed within a central bore (124) of the housing (122), a valve (140) including a valve stem (144) slidably disposed within the valve guide (194) and a valve head (142) selectively engageable with a valve seat (134) of the housing (122) to control the flow of gas between intake and exhaust openings (130, 132) into a housing (122) intake chamber (128). First and second stem seals (190, 192) are disposed at opposite ends of the valve guide (194) in sealing engagement with the valve stem (144) between a distal side of the valve stem (144) and a proximal side of the valve guide (194) of the central bore (124) of the housing (122).

The utility model relates to the technical field of powder metallurgy, and discloses a powder metallurgy valve guide pipe forming die which comprises an upper punching mechanism arranged above a fixed die base, a floating female die installed on the top of the fixed die base, a lower punching die inserted into the bottom of the floating female die, and a T-shaped cavity formed in the fixed die base. A damping mechanism is arranged at the T-shaped cavity in the fixed mold base; according to the technical scheme, the top of the floating female die is filled with powder, the powder is gradually and compactly formed through contact of the upper punching mechanism and the lower punch, when the lower punch is subjected to downward pressure of the upper punching mechanism, the movable arm rotates along with displacement of the lower punch along with increase of the pressure, the lower punch can conduct displacement movement in a small range, and therefore the powder can be tightly formed. And meanwhile, the spring is compressed when the lower die punch moves downwards, and the spring absorbs and disperses impact energy after being compressed, so that cracks and deformation caused by vibration in the valve guide pipe forming process are reduced, and the surface quality of a formed part is improved.

The application discloses a gilded soft label forming device and a process thereof, which comprises an upper die plate fixed above a pressing area of a pressing equipment and a base fixed at the bottom of the base on a table top of the pressing equipment, gas valve guide rods are arranged at four corners of the upper die plate and the base, a side cutting base is arranged at the center of the base, track guide rods of the side cutting base are slidingly clamped in helical grooves of the base, a floating lower die capable of floating up and down is arranged at the center of the side cutting base, air pressure cavities are arranged at four corners of the base, the air pressure cavities are connected with air passages in the floating lower die through air grooves, Z-shaped cutting knives capable of sliding left and right are arranged in Z-shaped floating cavities of the side cutting base, and the oblique taper mouths of the Z-shaped cutting knives are slidably attached to the conical surfaces of conical middle rods of the floating lower die.

The invention discloses a valve mechanism with an oil sprayer and a method, and belongs to the technical field of internal combustion engines. The mechanism is characterized in that the lower end of a valve is reversely buckled on a valve hole in the middle of a cylinder seat; the upper end of the valve seat is fixedly connected with the cylinder head cover; a pre-storage cavity is formed in the cylinder head cover, and the two annular cavities communicate with the pre-storage cavity through an air inlet one-way valve and an exhaust one-way valve. The upper end of the air valve is inserted into an air valve guide pipe fixedly connected with the upper end of the cylinder head cover; an oil spraying valve body is mounted in a cavity in the air valve; an oil spraying control mechanism is arranged in the oil spraying valve body and used for controlling a switch of an oil spraying nozzle at the lower end of the oil spraying valve body. The valve control mechanism is arranged in the valve guide pipe and used for controlling opening and closing of the valve hole. The single-valve distribution mechanism is adopted, the oil sprayer and the valve are combined into a whole, and the advantages of being small in size, low in energy consumption, high in working efficiency, long in service life of the valve and the like are achieved.

The invention discloses a traversing hydraulic drive isolating valve for a vacuum induction furnace, which comprises an isolating valve shell, a valve guide vehicle, an isolating valve, a valve traversing device and a clamping and sealing device, a valve port is formed in the isolating valve shell, and a valve seat is welded on the periphery of the valve port; the isolation valve is mounted at the lower end of the valve guide vehicle through a door hanger; the valve transverse moving device adopts a horizontally arranged long-stroke hydraulic cylinder, and the long-stroke hydraulic cylinder is used for driving the isolation valve to horizontally move along the transverse guide rail so as to open or close a valve port; the clamping and sealing device comprises four clamping hydraulic cylinders, a cylinder body of each clamping hydraulic cylinder is fixed to the isolating valve shell, a piston rod of each clamping hydraulic cylinder stretches out and draws back, and the clamping hydraulic cylinders are used for pressing the isolating valve to a valve seat at a valve port. The transverse moving type hydraulic drive isolating valve is simple and compact in structure, large in driving force, good in sealing effect and particularly suitable for the vacuum isolation working condition of a large vacuum induction furnace.

The invention discloses a valve guide pipe outer wall polishing and cleaning device, and belongs to the technical field of polishing and cleaning equipment. The device comprises a vibration cleaning mechanism, the vibration cleaning mechanism comprises a vibration charging barrel, a mounting frame is fixedly connected to the bottom of the inner wall of the vibration charging barrel, a vibration frame is fixedly mounted at the top of the mounting frame, a vibrator is fixedly mounted in the vibration frame, and a receiving disc is fixedly connected to the middle of the inner wall of the vibration charging barrel; the middle part of the material receiving disc is fixedly connected with the vibration frame; a tilting displacement mechanism for driving the vibrating charging barrel to tilt is arranged below the vibrating cleaning mechanism; through the vibration cleaning mechanism, a vibrator is used for driving structures such as a material receiving disc to vibrate, grinding materials and workpieces placed in a vibration charging barrel are driven to vibrate, and grinding cleaning of the outer wall of a guide pipe is achieved through vibration and friction.

The invention discloses a waterproof breathable explosion-proof valve, which relates to the technical field of explosion-proof valves, and comprises a retainer, a valve guide pipe, a waterproof breathable piece, a pressing assembly and an elastic assembly, the elastic assembly has pre-tightening force so that the valve guide pipe can press and cover the pressure relief channel in a breathing state, and air flow in the battery pack body can communicate with the outside through the breathing channel, the flow guide channel, the waterproof breathable piece and the pressing assembly; in the pressure relief state, the valve guide pipe can move in the direction away from the retainer under the action of air pressure in the battery pack body, so that airflow is communicated with the outside through the pressure relief channel, and the elastic assembly can elastically deform. According to the waterproof breathable anti-explosion valve, the reliability can be improved. The invention further provides a power battery pack comprising the waterproof breathable anti-explosion valve.

A fluid management system includes a fluid management controller and a fluid dispenser. The controller authorizes control of the one or more fluid management components over a wireless interface. A dispensing meter can be activated by an authentication device. The fluid meter includes a cartridge valve with a valve cartridge and a valve stem. The cartridge valve guides the valve stem and provides the only sealing surface for the dynamic seals and control seal disposed on the valve stem. The handheld meter dispenses through a nozzle, which includes an overmolded stem tip that generates a laminar fluid flow as the fluid exits the nozzle. The handheld fluid meter includes circuitry configured to invert the orientation of a visual output provided by a display of the handheld fluid meter to facilitate installation of the handheld fluid meter for use in an oil bar application.