6results 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 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 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.

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.

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.