5results about How to "Good anti-backflow effect" patented technology

The utility model discloses a novel sewage intercepting well which comprises an intercepting well body, the intercepting well body is made of stainless steel, the left side of the intercepting well body is fixedly communicated with a water inlet pipe, and the right side of the intercepting well body is provided with a flexible intercepting device. The intercepting well body, the water inlet pipe, the flexible intercepting device, the connecting pipe, the first flange, the second flange, the bolt, the nut, the conveying pipe, the third flange, the supporting frame, the water outlet and the hydraulic gate are matched with one another, the effect of good backflow prevention effect is achieved, the practicability of the device is greatly improved, and therefore the market requirement can be greatly met.

This utility model provides a check valve installation mechanism and a flue sealing mechanism, belonging to the field of flue sealing, to solve the problem of oil fumes seeping into the user's room through gaps such as the valve body edge and the connection with the wall; it includes a first fixing member with a square first receiving groove; a first elastic sealing member disposed in the first receiving groove; a second fixing member with a through hole, the side wall of the through hole being bent towards the wall to form a square limiting part, which is used to insert into the first receiving groove; and a second elastic sealing member disposed on the side wall of the second fixing member facing the wall, for abutting against the wall; through the action of the first elastic sealing member and the second elastic sealing member, gaps between the second fixing member and the wall caused by protrusions or grooves on the installation wall, as well as gaps at the connection between the first fixing member and the second fixing member caused by protrusions or grooves, can be effectively avoided, ensuring that a seal can be achieved.

The utility model relates to the related technical field of water supply pressurization equipment, in particular to water storage type water supply pressurization equipment with an anti-backflow structure, which comprises a water supply pipe and an anti-backflow mechanism, and the anti-backflow mechanism is arranged in the water supply pipe. According to the water storage type water supply pressurizing equipment with the anti-backflow structure, through the arrangement of the anti-backflow mechanism, when water in a water supply pipe flows in the forward direction, water flow pushes a non-return block to move, the non-return block drives a push rod to move, the push rod drives a baffle to move, the baffle pulls a spring to stretch and deform, and at the moment, the non-return block is separated from a first sealing ring; when the water in the water supply pipe does not flow or flows back, the spring does reset movement without external force or is extruded by the flowing water to reset, so that the spring drives the baffle to reset, the baffle drives the push rod to reset, the push rod drives the non-return block to reset, and the non-return block abuts against the first sealing ring to form a sealing structure; and water in the water supply pipe can be prevented from flowing back.

The utility model provides a dust bag's butt joint device of dust catcher relates to dust catcher accessory technical field, including connecting pipe A, bellows, movable pipe, the upper end of connecting pipe A is equipped with fixed pipe, and the downside surface of fixed pipe is fixedly connected with the upside surface of connecting pipe A, the bellows is placed in the lower end outside connecting pipe A, and bellows and the lower end outside connecting pipe A are movably connected, the lower end of bellows is connected with connecting pipe B, and is equipped with thread on the upper end outside connecting pipe B, through the inside of two groups of connecting pieces is connected with three groups of inclined baffle respectively, and six groups of inclined baffles staggered arrangement, when dust catcher works, airflow carries dust and can smoothly pass through the clearance between inclined baffle and enter dust bag, and when dust catcher stops, the dust in dust bag can be blocked by staggered inclined baffle and backflow to dust catcher pipeline, reduces secondary pollution, solved the problem that dust bag's butt joint device of existing dust catcher is difficult to prevent dust in dust bag from backflowing completely.

The utility model discloses an oxygen humidifying device convenient to prevent backflow, which belongs to the field of oxygen humidifying devices and comprises a humidifying box, a box cover is fixedly connected onto the humidifying box, an air inlet pipe is fixedly connected to one side of the box cover, and an air outlet pipe is fixedly connected to the other side of the box cover. Liquid can be effectively prevented from flowing back into the air inlet pipe, the backflow prevention effect is better, external humidification water penetrates through a third rubber pad through a needle head of the injection pipe, the humidification water is injected into the humidification chamber, accordingly, the humidification water is movably added, the third rubber pad seals and protects the humidification chamber, and in the humidification water adding process, the humidification effect is better. External air is not prone to entering mixed air, internal oxygen is not prone to leaking, the number of particle drying agents between the fixed filter plate and the movable filter plate is movably adjusted, the humidity of the air is adjusted by increasing or reducing the number of the drying agents, and a user can breathe air more comfortably.