15results about How to "Realize automatic pressure relief" patented technology

The present application relates to the technical field of plunger pump, in particular to a variable stroke double cavity plunger pump, which comprises a shell and a driving motor, two delivery pipes are arranged in the shell, two groups of crankshaft assemblies are arranged on the output shaft of the driving motor, the shell is connected with the corresponding delivery pipe through the crankshaft assembly, and a first one-way valve and a second one-way valve are symmetrically arranged in the delivery pipe along the axis of the crankshaft assembly; the one-way valve comprises a reset assembly, a sealing assembly and a clamping assembly arranged in sequence from top to bottom, the sealing of the sealing assembly is realized by the elastic extension of the reset assembly and the adhesion of the clamping assembly; the sealing assembly on the first one-way valve is provided with a first negative pressure assembly, the sealing assembly on the second one-way valve is provided with a second negative pressure assembly, and the first negative pressure assembly and the second negative pressure assembly are oppositely arranged; by arranging the negative pressure disc and the connecting pipe, the stress area of the sealing ball under the negative pressure condition is increased, the opening speed is accelerated, and the fluid passing efficiency is improved.

This invention discloses a venting detection device for an ultra-high pressure fuel distribution pipe, relating to the field of water immersion leak detection technology. It includes a detection water reservoir with two air supply connectors mounted on it. A sealing component is fixedly installed on the right-side air supply connector. Two automatic cutting components are mounted on the detection water reservoir, used to cut off the clamping ends of the fuel distribution pipe. An air intake control component is fixedly installed on the left-side air supply connector. An anti-bending and anti-winding component is installed inside the detection water reservoir. The automatic cutting components allow for automatic removal of the clamping sections at both ends of the fuel distribution pipe after leak detection. This removal can be performed during normal venting and leak detection operations, avoiding the risk of manual forgetting to remove the clamping sections. This solves the problem that current ultra-high pressure fuel distribution pipe venting detection devices are not convenient for automatically removing the clamping sections after venting detection.

The application discloses an electromagnetic valve core with automatic pressure relief capacity, which comprises a core component, a buffer assembly for protecting the core is arranged at the upper end of the core component, and a pressure relief assembly for automatic pressure relief is arranged in the core component; the core component comprises a movable core, a water stop piston for closing a water outlet is connected to the bottom of the movable core, and a sealing ring for sealing the water outlet is embedded in the lower end of the water stop piston. Through the arranged pressure relief channel and automatic pressure relief unit, the radial hole can first transmit the high-pressure water source to the inside of the transfer pipeline through the axial hole, the water source in the transfer pipeline pushes the pressure relief plate upward, when the pressure relief plate moves upward to the channel position of the pressure relief secondary pipe, the high-pressure water source is discharged to a specified area through the pressure relief secondary pipe, so that the automatic pressure relief of the electromagnetic valve core is effectively realized, and the resistance received by the piston is reduced, and the working efficiency of the piston is improved.

This utility model relates to the field of intelligent toilet vacuum breaker technology, and more specifically, to a vacuum breaker, including a valve body. The valve body is divided into a water inlet chamber and an installation chamber. A vacuum breaker device is provided at the top of the water inlet chamber. The water inlet chamber and the installation chamber are connected through a water passage hole. The vacuum breaker device is connected to the outside. The installation chamber is provided with a pressure relief pipe, an elastic element, and a first sealing cover. The pressure relief pipe is provided with a pressure relief port. One end of the elastic element abuts against the first sealing cover, and the other end abuts against the end face of the pressure relief port. The first sealing cover seals the water passage hole. This utility model can relieve pressure when the actual pressure of the pipeline exceeds the upper limit of the design pressure, thus preventing the hose from rupturing.

This invention relates to the field of power cable technology, specifically to a low-temperature resistant, crack-resistant protective conduit for communication and power cables. It includes a cable body with an inner insulation structure. The insulation structure includes a first positioning ring and a second positioning ring located inside the cable body. The outer wall of the second positioning ring has a heating wire groove, and the inner side of the heating wire groove has a heating wire body. An installation head is fixedly connected to the outer wall of the second positioning ring, and a connecting post is fixedly connected between the installation heads. The side wall of the connecting post has a wire-passing groove. The venting structure includes a venting ring fixedly fitted around the outer ring of the cable body, and multiple venting pipes are fixedly connected to the outer wall of the venting ring. This invention provides a low-temperature resistant, crack-resistant protective conduit for communication and power cables, which has the advantages of heating and insulation in low-temperature environments, automatic venting, and high overall cable stability and compressive strength.

This invention provides a water treatment device for aquaculture, belonging to the field of aquaculture water treatment technology. It includes an ultraviolet (UV) sterilization unit with a sealed water delivery component, used for defoaming and sterilization; a mixing auxiliary component is installed on the sealed water delivery component to improve the sterilization quality of the aquaculture water; a self-cleaning unit is installed inside the UV sterilization unit; and an anti-pressure-locking component is installed on the UV sterilization unit. This invention, by setting up a UV sterilization unit, can achieve negative pressure suction. Combined with the slidably adjustable sealed water delivery component, it can achieve diverted, quantitative, and sealed UV sterilization of aquaculture water, thus improving sterilization quality. This solves the problems of existing aquaculture water treatment equipment being inconvenient for independent sterilization and the interference of large amounts of foam and scum in the water with UV sterilization.

The utility model relates to a kind of battery and battery group structure with pressure relief valve, including battery, metal needle, connecting pipe and pressure relief valve, battery cover plate of battery is equipped with liquid injection hole, liquid injection hole communicates battery internal cavity, liquid injection hole sealing rubber peg is embedded in liquid injection hole to block liquid injection hole, connecting pipe and pressure relief valve are located in battery exterior, metal needle is hollow inside, one end of metal needle is connected with connecting pipe, the other end of metal needle is inserted into liquid injection hole sealing rubber peg and extends into battery internal cavity, the other end of connecting pipe is connected with pressure relief valve.Battery is grouped, pressure relief valve uses multiple interface pressure relief valve, that is, pressure relief valve includes multiple air inlets and an exhaust port, connecting pipe on each battery is connected with a corresponding air inlet on pressure relief valve, or when battery number is too much, the connecting pipe of multiple batteries can be commonly connected with the same air inlet of pressure relief valve.The utility model does not occupy battery internal space, and can be assembled after battery manufacturing is completed, and it is convenient to disassemble and assemble.

The utility model relates to the technical field of electric heating steam generators, and discloses an explosion-proof structure of an electric heating steam generator, a main body comprises an outer shell, a honeycomb-shaped interlayer and a reinforcing inner layer, the honeycomb-shaped interlayer is arranged between the outer shell and the reinforcing inner layer, a pressure gauge is fixedly arranged at the upper end of the main body, and the pressure gauge is arranged on the outer shell. The sealing plug is arranged in the pressure relief pipe, the upper end of the sealing plug is connected with the reset spring and the movable rod, when the pressure in the main body exceeds a set value, steam pressure jacks up the sealing plug upwards, the sealing plug moves upwards on the inner wall of the pressure relief pipe, steam enters the exhaust pipe through a gap between the sealing plug and the pressure relief pipe to be exhausted, and automatic pressure relief is achieved; when the pressure drops to a safety range, the reset spring is elastically released, the sealing plug is pushed to reset downwards, the side portion of the sealing plug is attached to the inner wall of the pressure relief pipe again, automatic sealing is completed, tedious operation of manual reset and entering of external impurities are avoided, and it is ensured that equipment rapidly recovers the sealing state and maintains normal operation after pressure relief.

The utility model relates to joint explosion -proof box technical field, and disclose a novel fire -resistant explosion -proof box for cable joint containing composite explosion -proof board, including the top box, the bottom of top box is provided with the bottom box, is equipped with the first pressure -relief hole on the top box, the inside of first pressure -relief hole is provided with pressure -relief mechanism, the pressure -relief mechanism includes first ring stand and limit ring, the sliding connection of first ring stand has the guide rod, the upper end fixed connection of guide rod has the pressure -relief cover. The utility model discloses through cable joint in short -circuit fire box explosion, the explosion -proof box of cable joint because of the inside pressure instantaneous increase, its pressure -relief cover under the action of pressure, its pressure -relief cover will be upturned, make its fire -resistant explosion -proof box can realize automatic pressure -relief, after the pressure relief is completed, its pressure -relief cover under the action of first spring, the pressure -relief cover is reset and presses on the limit ring, realizes again sealing, avoids the problem that the air appears and burns in the fire -resistant explosion -proof box interior, plays the role of fire prevention.

This invention discloses a powder forming hydraulic press and a powder hydraulic forming method. The hydraulic press includes a machine body, a main cylinder, an upper slide block, and a worktable. An upper mold for pressing powder is fixed to the bottom of the upper slide block. Return supports are symmetrically arranged on the left and right sides of the upper slide block, each driven by a return cylinder. A demolding slide block is stacked above the worktable. Demolding cylinders are installed below the four corners of the worktable, and the ejector rods of each demolding cylinder are connected to the corners of the demolding slide block. A mold mounting hole is provided in the central area of ​​the demolding slide block, and a through lower mold is installed in the mold mounting hole. A feeding mechanism driven by a feeding cylinder is provided behind the demolding slide block, and a pushing mechanism driven by a pushing cylinder is provided below the feeding mechanism. The powder hydraulic forming method includes: feeding, rapid descent of the main slide block, slow descent, rapid pressurization, working feed pressurization, pressure holding, demolding, upper slide block pressure release and return, demolding slide block return, pushing, and demolding slide block falling back. This invention results in high workpiece forming efficiency and good quality.

The utility model discloses a main valve structure of high pressure pneumatic cleaning device, including valve body, valve ball, left valve pipe spare, right valve pipe spare, the inside of valve body is provided with valve cavity, valve ball rotation is connected in the inside of valve cavity, the left side of valve body is fixedly connected with left valve pipe spare through flange spare, left valve pipe spare other end is connected with gas pressure system, be provided with pneumatic seal spare in left valve pipe spare, pneumatic seal spare and valve ball left side contact, the right side of valve body is fixedly connected with right valve pipe spare through flange spare, right valve pipe spare other end is connected with cleaning device, be provided with spring seal spare in right valve pipe spare, spring seal spare and valve ball right side contact. The utility model discloses a kind of main valve structures of reliable sealing, effectively improve service life and safety.

This invention relates to the field of low-pressure fuel tank technology, specifically a safety protection device for low-pressure fuel tank charging of a basic trainer aircraft. The device includes a fuel tank body with an air inlet at the top and an air inlet pipe fixedly connected inside. When the fuel tank body is charged via the air inlet pipe, if the pressure inside the fuel tank body exceeds the pressure inside the fixed pipe, gas enters the fixed pipe and compresses a first piston, causing it to open a pressure relief pipe. Gas then releases pressure through the pressure relief pipe, which in turn drives a rotating fan blade. This rotating fan blade drives a rotating shaft, which in turn drives a rotating valve via two bevel gears, causing it to rotate and close. The rotating valve then drives a limit block, causing the limit block to rotate at the other end of the notch ring. This achieves automatic valve closure and timely cessation of fuel tank charging during automatic pressure relief.

The utility model discloses a kind of self-supporting bags with pressure relief function belong to packaging bag technical field.Aiming at the problem that conventional self-supporting bag cannot effectively relieve pressure when internal pressure rises, cannot be automatically sealed after pressure relief or is easy to be opened by mistake when transporting and storing, the following technical solutions are provided: a pressure relief mechanism is arranged at the opening of the bag body.The pressure relief mechanism includes a detachably connected pressure relief box and a pressure relief head.The pressure relief head includes a gas inlet head extending into the bag and a connecting pipe.The pressure relief box is provided with an elastic sheet, and a rubber sealing block is fixed to the end of the elastic sheet.The sealing block continuously presses the tapered groove at the end of the connecting pipe to achieve sealing under the action of the elastic sheet.When the pressure in the bag is too high, the gas overcomes the elastic force of the elastic sheet to open the sealing block and relieve the pressure.After pressure relief, the elastic sheet drives the sealing block to reset and restore the seal.The pressure relief box is also provided with a slidable limiting rod to limit the movement of the elastic sheet.The self-supporting bag can automatically relieve pressure and restore the seal, preventing accidental opening during transportation, and improving the safety and reliability of use.

The application discloses a water tank liquid level control device and method, a water tank device and a sanitary cleaning device. The water tank liquid level control device comprises a water tank, a water inlet, a water outlet and an exhaust hole; a floating body and a pressure detector for detecting the internal pressure of the water tank; the floating body is located in the water tank and floats up with the rising of the liquid level in the water tank; the floating body limits the exhaust of the gas in the water tank from the exhaust hole when floating to the highest position; and when the internal pressure of the water tank increases to be greater than or equal to a first preset value, the pressure detector outputs a pressure signal for controlling the water tank to stop water inflow. The application adopts the floating body to control whether the water tank exhausts during water inflow; and when the exhaust hole does not exhaust, the pressure detector detects the increase of the internal pressure of the water tank and outputs a pressure signal for controlling the water tank to stop water inflow. Therefore, the pressure detector of the application does not need to contact with the liquid, the sealing requirement is low, the cost is reduced, and the service life of the pressure detector is prolonged.

The utility model relates to a waste heat recovery technical field especially a boiler waste heat recovery device, including heat exchange furnace and setting up in the heat exchange furnace one side's air exchange subassembly, the air exchange subassembly passes through fixed assembly with heat exchange furnace fixed, the upside of air exchange subassembly is provided with the adjusting assembly for adjusting the pressure intensity of air exchange subassembly and is positioned to the positioning assembly for adjusting assembly, the utility model discloses through air exchange subassembly to can realize automatic pressure relief when in stove pressure overrun, effectively prevent the security risk caused by the overhigh air pressure, and simultaneously is equipped with adjusting assembly, can according to actual working condition flexible adjustment exhaust pressure threshold value, ensure that the system can keep the best operating state under different working environment.