CN206054828U - U-shaped non-return valve - Google Patents

Abstract

The utility model discloses a kind of U-shaped non-return valve, including base and the non-return valve body with base grafting, described valve body takes the shape of the letter U, it is provided with feed tube and drain pipe on valve body side by side, described feed tube is parallel to each other with drain pipe and its mouth of pipe points to the same side of valve body, base includes a base plate, base plate is provided with input port corresponding with feed tube and output port corresponding with drain pipe, feed tube and drain pipe its mouth of pipe are adapted to corresponding input port and output port grafting respectively, are respectively equipped with O-ring seal on the inwall of input port and output port.It efficiently solves the non-return valve junction of prior art and easily leaks, keeps in repair and change inconvenience and the high problem of production cost, and non-return valve good airproof performance of the present utility model, maintenance are simple and convenient and processing cost is low with replacing, with very high practical value.

Description

U-shaped non-return valve

Technical field

This utility model is related to technical field of valve manufacturing, reliable more particularly, to a kind of connection, low cost of manufacture, dismounting Convenient U-shaped non-return valve.

Background technology

The typically same both sides for being located in valve body of its liquid inlet and outlet mouth of pipe of existing small-sized non-return valve, during use, which is into and out of liquid pipe Mouth is threadedly attached in the input of liquid line, is connected in series on output port, dimension of this connected mode in valve When repairing or changing very, dismounting is wasted time and energy；Further, since valve junction easily leaks, in order to avoid valve junction leaks, The junction complex structure of valve, processing cost are higher.Publication date is August in 2013 28, Publication No. CN 203162243 The Chinese patent document of U discloses a kind of non-return valve, including valve body, valve element, spring, O type circles, sealing collar, baffle ring and valve gap, The valve body includes water inlet end and water side, and the valve outer wall is provided with groove and annular chamfer, and the O types circle is in groove, institute State valve interior wall and be provided with annular protrusion, the valve element is provided with the valve gap with its one positioned at water side side, and the valve element is located at Water inlet end side card has a baffle ring, and the valve element is arranged with a spring, and the spring one end is mutually butted on baffle ring, and the other end is mutually butted on Annular protrusion, the water side inwall are provided with horn mouth, and the sealing collar is sleeved on valve element and is close to valve gap, the sealing Circle is mutually butted on horn mouth and can seal cooperation.Water inlet end under the effect of Fluid pressure that a direction is flowed, baffle ring push the spring, Open valve gap, fluid smoothly flows through；When fluid opposite direction flows, valve gap is propped up by Fluid pressure, so as to cut off flowing, realized Control liquid medium one-way flow.The non-return valve its liquid inlet and outlet mouth of pipe is also located at the both sides of valve body, its liquid inlet and outlet during use The mouth of pipe is threadedly attached in the input of liquid line, is connected in series on output port, and this connected mode is in valve Bother very much when maintenance or replacing, dismounting is wasted time and energy.

Utility model content

This utility model is that the non-return valve junction for solving prior art easily leaks, keeps in repair and change inconvenience and production cost A kind of high problem, there is provided good airproof performance, the maintenance U-shaped non-return valve low with simple and convenient and processing cost is changed.

This utility model be reach concrete technical scheme that above-mentioned technical purpose adopted for：A kind of U-shaped non-return valve, including Base and the non-return valve body with base grafting, described valve body take the shape of the letter U, and are provided with feed tube and drain pipe, institute on valve body side by side The feed tube stated is parallel to each other with drain pipe and its mouth of pipe points to the same side of valve body, and base includes a base plate, and base plate is provided with Input port corresponding with feed tube and output port corresponding with drain pipe, feed tube and drain pipe its mouth of pipe respectively with it is corresponding Input port and output port grafting adaptation, be respectively equipped with O-ring seal on the inwall of input port and output port.

The feed tube of this utility model non-return valve is disposed in parallel in the same side of valve body, and the correspondence on base with drain pipe Input port and output port are set, and when installing and using, input port and output port are plugged on by feed tube corresponding with drain pipe Upper, during dismounting, pipeline is not affected on which, convenient and swift.Junction of the present utility model sealing using input port with The version of O-ring seal is set in output port, and this mode simplifies the profile of feed tube and drain pipe on valve body and ties Structure, simplifies Valve Block Mould in the case where sealing is ensured, reduces manufacturing cost.So, this utility model solves existing skill The non-return valve junction of art easily leaks, keeps in repair and change inconvenience and the high problem of production cost.

Preferably, being respectively equipped with stepped hole in input port and output port, the O-ring seal is arranged on stepped hole It is interior, it is provided with the opening of stepped hole for compressing the gland of O-ring seal；O-ring seal in input port and output port 2 are, Juxtaposition and Superimposition is arranged.

Preferably, feed tube is provided with the gland of arc angling, input port and output port with the mouth of pipe of drain pipe It is correspondingly provided with tapered guide surface.Arc angling into and out of the liquid pipe mouth of pipe is led with the taper on input port and output port gland Coordinate to face, facilitate feed tube and drain pipe inserted base.

Preferably, the both sides of valve body are extended with the fixed plate parallel with base plate, fixed plate is provided with fixing hole, on base plate It is provided with screw corresponding with fixing hole.After valve body and base grafting, using the screw on the fixing hole and base plate in fixed plate, can So that easily valve body is fixed with base, it is to avoid valve body occurs loosening because of pressure medium.

Preferably, core assembly is provided with valve body, the core assembly includes valve base seat, valve core case and valve element, valve element One end it is tapered, sealing back-up ring is provided between the base portion and valve base seat of taper, is provided between the other end and valve core case of valve element Back-moving spring, valve body are provided with the valve gap for standing valve core print seat, are equipped with close between valve gap, valve core case and valve base seat and valve body Seal ring.The valve core case of core assembly, valve base seat and valve element coordinate, and realize the one-way flow function of non-return valve.

The beneficial effects of the utility model are：It efficiently solves the non-return valve junction of prior art and easily leaks, ties up Repair and change inconvenience and the high problem of production cost, non-return valve good airproof performance of the present utility model, maintenance and replacing are simple and convenient And processing cost is low, with very high practical value.

Description of the drawings

Fig. 1 is a kind of structure sectional view of the present utility model；

Fig. 2 is the top view of Fig. 1；

Fig. 3 is the left view of Fig. 1.

In figure：1. valve body, 2. feed tube, 3. drain pipe, 4. base plate, 5. input port, 6. output port, 7.O types are close Seal, 8. stepped hole, 9. gland, 10. arc angling, 11. tapered guide surfaces, 12. fixed plates, 13. fixing holes, 14. valve base seats, 15. valve core cases, 16. valve elements, 17. sealing back-up rings, 18. back-moving springs, 19. valve gaps, 20. sealing rings.

Specific embodiment

Below by embodiment, and it is further to the specific embodiment work of technical solutions of the utility model to combine accompanying drawing Explanation.

Embodiment 1

In embodiment 1 as shown in Figure 1, a kind of U-shaped non-return valve, including base and the non-return valve body with base grafting 1, described valve body takes the shape of the letter U, and is provided with feed tube 2 and drain pipe 3 on valve body side by side, and described feed tube is parallel to each other with drain pipe And its mouth of pipe points to the same side of valve body, feed tube is provided with arc angling 10 with the mouth of pipe of drain pipe, valve element group is provided with valve body Part, core assembly include valve base seat 14, valve core case 15 and valve element 16, and one end of valve element is tapered, base portion and the valve base seat of taper Between be provided with sealing back-up ring 17, back-moving spring 18 is provided between the other end and valve core case of valve element, valve body is provided with for fixing The valve gap 19 of valve core case, is equipped with sealing ring 20 between valve gap, valve core case and valve base seat and valve body.

Base includes a base plate 4, and base plate is provided with input port 5 corresponding with feed tube and output corresponding with drain pipe Port 6, is respectively equipped with stepped hole 8 on input port and output port inwall, and the bottom of stepped hole is provided with O-ring seal 7, input Port is 2 with the O-ring seal in output port, and Juxtaposition and Superimposition is arranged, and is provided with O-shaped for compressing at the opening of stepped hole The gland 9 of sealing ring, gland are that tapered guide surface 11 is provided with opening.

Feed tube and drain pipe its mouth of pipe are adapted to corresponding input port and output port grafting respectively, the both sides of valve body It is extended with the fixed plate 12 parallel with base plate（See Fig. 2 Fig. 3）, fixed plate is provided with fixing hole 13, and base plate is provided with and fixing hole Corresponding screw.

When non-return valve of the present utility model is used, by the input on the feed tube on valve body and drain pipe correspondence inserted base Port and output port, are fixed on valve body on base by the fixing hole bolt in fixed plate, and non-return valve can normal work Make, safeguard or bolt need to be only unclamped when changing, valve body is extracted from base, it is convenient and swift.

In addition to the implementation, in the scope disclosed in claims of the present utility model and description, this practicality New technical characteristic or technical data can be reselected and be combined, and so as to constitute new embodiment, these are all these Art personnel need not carry out that creative work is i.e. attainable, therefore the enforcement that these this utility model are not described in Example also should be regarded as specific embodiment of the utility model and within protection domain of the present utility model.

Claims (6)

1. a kind of U-shaped non-return valve, is characterized in that, including base and the non-return valve body with base grafting（1）, described valve body is in U-shaped, is provided with feed tube side by side on valve body（2）With drain pipe（3）, described feed tube is parallel to each other with drain pipe and its mouth of pipe refers to To the same side of valve body, base includes a base plate（4）, base plate is provided with input port corresponding with feed tube（5）And with go out liquid Manage corresponding output port（6）, feed tube and drain pipe its mouth of pipe it is suitable with corresponding input port and output port grafting respectively Match somebody with somebody, on the inwall of input port and output port, be respectively equipped with O-ring seal（7）.

2. U-shaped non-return valve according to claim 1, it is characterised in that set in described input port and output port respectively There is stepped hole（8）, the O-ring seal is arranged in stepped hole, is provided with for compressing O-ring seal at the opening of stepped hole Gland（9）.

3. U-shaped non-return valve according to claim 2, it is characterised in that the feed tube is provided with arc with the mouth of pipe of drain pipe Chamfering（10）, on input port and the gland of output port, it is correspondingly provided with tapered guide surface（11）.

4. U-shaped non-return valve according to claim 2, it is characterised in that O-shaped close in the input port and output port Seal is 2, and Juxtaposition and Superimposition is arranged.

5. U-shaped non-return valve according to claim 1, it is characterised in that the both sides of the valve body are extended with parallel with base plate Fixed plate（12）, fixed plate is provided with fixing hole（13）, base plate is provided with screw corresponding with fixing hole.

6. the U-shaped non-return valve according to any one of claim 1-5, it is characterised in that core assembly is provided with valve body, it is described Core assembly includes valve base seat（14）, valve core case（15）And valve element（16）, one end of valve element is tapered, the base portion and valve base of taper Sealing back-up ring is provided between seat（17）, between the other end and valve core case of valve element, it is provided with back-moving spring（18）, valve body is provided with use In the valve gap of standing valve core print seat（19）, between valve gap, valve core case and valve base seat and valve body, it is equipped with sealing ring（20）.