CN205315782U

CN205315782U - Novel one -way valve

Info

Publication number: CN205315782U
Application number: CN201521084012.3U
Authority: CN
Inventors: 薛平
Original assignee: Jiangsu Jiusheng Environmental Protection Equipment Co Ltd
Current assignee: Jiangsu Jiusheng Environmental Protection Equipment Co Ltd
Priority date: 2015-12-22
Filing date: 2015-12-22
Publication date: 2016-06-15
Anticipated expiration: 2025-12-22

Abstract

The utility model relates to a novel one -way valve, including valve body and flange, the valve body connect gradually by flow -through orifice, internals, sealing member and outer piece to constitute, the flow -through orifice is connected with a flange respectively with the outside of outer piece, two flanges between be provided with threaded connection spare, two flanges presss from both sides tightly flow -through orifice, internals, sealing member and outer piece through threaded connection spare, internals in seted up in the water conservancy diversion passageway, interior water conservancy diversion passageway and flow -through orifice in the metering orifice be linked together, outer in seted up round platform shape through -hole, the one end of sealing member stretch into to outer the round platform shape through -hole in, form outer water conservancy diversion passageway between the inner wall of the round platform shape through -hole of outer piece and the lateral wall of sealing member, the lateral wall of internals water conservancy diversion passageway in on seted up the water conservancy diversion hole, the water conservancy diversion hole pass sealing member and outer water conservancy diversion passageway and be linked together. This design has the structure, easily makes and practical efficient advantage.

Description

A kind of novel check valve

Technical field

The utility model belongs to pipe fitting valve field, particularly a kind of novel check valve.

Background technology

Check valve is that fluid can only flow along water-in, and water outlet medium but cannot reflux, and is commonly called as check valve. Check valve is also known as vacuum breaker or reverse checkvalve. For hydraulic efficiency system prevents oil stream reversed flow, or for pneumatic system prevents pressurized air countercurrent flow. Check valve has through type and right-angle type two kinds. Straight one-way valve is arranged on pipeline with being threaded. Angle check valve is threaded, board-like connection and Flange joint three kinds of forms. Wherein angle check valve is in the process used, and check valve card can be caused stagnant when the discharge in valve body and water flow pressure are excessive, check valve causes unnecessary damage, so designing a kind of novel check valve just seem particularly important.

Summary of the invention

To the defect that above-mentioned background technology exists, problem to be solved in the utility model makes the design have the function of oneself's protection by arranging overflow ducts and surplus valve, prevent check valve to be damaged when excessive discharge and water flow pressure, decrease potential safety hazard; A kind of novel check valve is provided.

For solving above-mentioned technical problem, structure of the present utility model comprises valve body and flange, described valve body is by fow-through orifice, internals, sealing member and outer member connect to form successively, the outside of described fow-through orifice and outer member is connected to a flange, it is provided with, between two described flanges, the part that is threaded, two described flanges are threaded connection part to fow-through orifice, internals, sealing member and outer member clamp, Inner guide passage has been offered in described internals, described Inner guide passage is connected with the flow hole in fow-through orifice, truncated cone-shaped through hole has been offered in described outer member, one end of described sealing member stretches in the truncated cone-shaped through hole of outer member, outer flow-guiding channel is formed between the inwall of the truncated cone-shaped through hole of described outer member and the sidewall of sealing member, described internals have offered pod apertures on the sidewall of Inner guide passage, described pod apertures is connected through sealing member with outer flow-guiding channel, overflow ducts has also been offered in described internals, described Inner guide passage is connected with outer flow-guiding channel by overflow ducts, it is provided with surplus valve in described overflow ducts.

Further: described surplus valve comprises valve cylinder, spool, spring and valve gap, described valve cylinder is arranged in overflow ducts, described valve gap is fixedly connected on the exit end of valve cylinder, described spool is movably connected in valve cylinder, described spool is connected with valve gap by spring, having offered the first overflow weir on the sidewall of described valve cylinder, described valve gap has offered the 2nd overflow weir relative to the position of the first overflow weir, the first described overflow weir is connected with outer flow-guiding channel by the 2nd overflow weir.

Further again: between described fow-through orifice and internals, to be provided with the first gasket, described fow-through orifice and be provided with the 2nd gasket between outer member and flange.

After adopting said structure, by arranging, overflow ducts and surplus valve make the design have the function of oneself's protection to the utility model, prevent check valve to be damaged when excessive discharge and water flow pressure, decrease potential safety hazard; And the design has the advantage that structure is simple, be easy to manufacture and practicality and high efficiency.

Accompanying drawing explanation

Below in conjunction with the drawings and specific embodiments, the utility model is described in further detail.

Fig. 1 is structural representation of the present utility model.

Fig. 2 is the structural representation of surplus valve.

Embodiment

A kind of novel check valve as shown in Figure 1, comprise valve body and flange 1, described valve body is by fow-through orifice 3, internals 5, sealing member 6 and outer member 7 connect to form successively, the outside of described fow-through orifice 3 and outer member 7 is connected to a flange 1, it is provided with, between two described flanges 1, the part that is threaded, two described flanges 1 are threaded connection part to fow-through orifice 3, internals 5, sealing member 6 and outer member 7 clamp, Inner guide passage 8 has been offered in described internals 5, described Inner guide passage 8 is connected with the flow hole in fow-through orifice 3, truncated cone-shaped through hole has been offered in described outer member 7, one end of described sealing member 6 stretches in the truncated cone-shaped through hole of outer member 7, outer flow-guiding channel 9 is formed between the inwall of the truncated cone-shaped through hole of described outer member 7 and the sidewall of sealing member 6, described internals 5 have offered pod apertures 10 on the sidewall of Inner guide passage 8, described pod apertures 10 is connected through sealing member 6 with outer flow-guiding channel 9, overflow ducts 11 has also been offered in described internals 5, described Inner guide passage 8 is connected with outer flow-guiding channel 9 by overflow ducts 11, it is provided with surplus valve 12 in described overflow ducts 11. it is provided with the first gasket 4 between described fow-through orifice 3 and internals 5, described fow-through orifice 3 and be provided with the 2nd gasket 2 between outer member 7 and flange 1, described sealing member 6 has offered flow-guiding channel relative to the position of pod apertures 10. by two side flanges 1, check valve is connected as, in pipeline system, made current be flowed in Inner guide passage 8 by flow hole, then flow in outer flow-guiding channel 9 by pod apertures 10, finally flow out from outer flow-guiding channel 9 during work, when the discharge flowing through check valve is excessive or hydraulic pressure is excessive, surplus valve 12 can start voluntarily, and the current in Inner guide passage 8 can also be flowed in outer flow-guiding channel 9 by overflow ducts 11. by arranging, overflow ducts and surplus valve make it have the self-function protected to the utility model, prevent check valve to be damaged when excessive discharge and water flow pressure, decrease potential safety hazard.

Surplus valve 12 as shown in Figure 2 comprises valve cylinder 13, spool 14, spring 15 and valve gap 16, described valve cylinder 13 is arranged in overflow ducts 11, described valve gap 16 is fixedly connected on the exit end of valve cylinder 13, described spool 14 is movably connected in valve cylinder 13, described spool 14 is connected with valve gap 16 by spring 15, the sidewall of described valve cylinder 13 has been offered the first overflow weir 17, having offered the 2nd overflow weir 18 relative to the position of the first overflow weir 17 on described valve gap 16, the first described overflow weir 17 is connected with outer flow-guiding channel 9 by the 2nd overflow weir 18.When the discharge and water flow pressure that flow through check valve are excessive, current can promote spool 14 to make it to valve gap 16 motion extrusion spring 15, along with the motion of spool 14 is when the first overflow weir 17 is connected with Inner guide passage 8 by overflow ducts 11, current first can flow into the first overflow weir 17 by overflow ducts 11, then flows in outer flow-guiding channel 9 by the 2nd overflow weir 18; The self structure of check valve is served the function of oneself's protection by the utility model by this design, decreases potential safety hazard; And the utility model also has the advantage that structure is simple, be easy to manufacture and practicality and high efficiency.

Claims

1. a novel check valve, comprise valve body and flange (1), it is characterized in that: described valve body is by fow-through orifice (3), internals (5), sealing member (6) and outer member (7) connect to form successively, the outside of described fow-through orifice (3) and outer member (7) is connected to a flange (1), it is provided with, between two described flanges (1), the part that is threaded, two described flanges (1) are threaded connection part to fow-through orifice (3), internals (5), sealing member (6) and outer member (7) clamp, Inner guide passage (8) has been offered in described internals (5), described Inner guide passage (8) is connected with the flow hole in fow-through orifice (3), truncated cone-shaped through hole has been offered in described outer member (7), one end of described sealing member (6) stretches in the truncated cone-shaped through hole of outer member (7), outer flow-guiding channel (9) is formed between the inwall of the truncated cone-shaped through hole of described outer member (7) and the sidewall of sealing member (6), described internals (5) have offered pod apertures (10) on the sidewall of Inner guide passage (8), described pod apertures (10) is connected through sealing member (6) with outer flow-guiding channel (9), overflow ducts (11) has also been offered in described internals (5), described Inner guide passage (8) is connected with outer flow-guiding channel (9) by overflow ducts (11), it is provided with surplus valve (12) in described overflow ducts (11).

2. the novel check valve of one according to claim 1, it is characterized in that: described surplus valve (12) comprises valve cylinder (13), spool (14), spring (15) and valve gap (16), described valve cylinder (13) is arranged in overflow ducts (11), described valve gap (16) is fixedly connected on the exit end of valve cylinder (13), described spool (14) is movably connected in valve cylinder (13), described spool (14) is connected with valve gap (16) by spring (15), the sidewall of described valve cylinder (13) has offered the first overflow weir (17), described valve gap (16) has offered the 2nd overflow weir (18) relative to the position of the first overflow weir (17), described the first overflow weir (17) is connected with outer flow-guiding channel (9) by the 2nd overflow weir (18).

3. the novel check valve of one according to claim 1, it is characterized in that: between described fow-through orifice (3) and internals (5), be provided with the first gasket (4), described fow-through orifice (3) and be provided with the 2nd gasket (2) between outer member (7) and flange (1).