CN215763438U

CN215763438U - Rubber flap check valve

Info

Publication number: CN215763438U
Application number: CN202122023994.7U
Authority: CN
Inventors: 张进贵; 张荣汉; 吴泾川
Original assignee: Fujian Naiyuan Valve Co ltd
Current assignee: Fujian Naiyuan Valve Co ltd
Priority date: 2021-08-26
Filing date: 2021-08-26
Publication date: 2022-02-08
Anticipated expiration: 2031-08-26

Abstract

The utility model discloses a rubber flap check valve, and relates to the technical field of check valves. The utility model provides a rubber lamella check valve, includes the valve bonnet, valve bonnet both sides fixedly connected with side is taken over, and valve bonnet bottom fixedly connected with bottom is taken over, and wherein, the inside lamella formula subassembly that is provided with is taken over to valve bonnet and side, and the lamella formula subassembly includes two sets of dead levers, and every group dead lever is provided with two, and two sets of symmetries set up, are fixed in respectively on the side takeover inner wall of both sides, fixedly connected with horizontal pole between two dead levers of every group. According to the utility model, through the arrangement of the flap type assembly and the external design of the valve, the device can realize the effects of single flow and double flow and single flow, so that the application range of the valve is widened, and compared with the arrangement of a traditional rotary flap check valve, the arrangement of the movable valve plate of the valve can better ensure that the phenomenon of water leakage at the valve plate can not occur in the use process of the valve, and the use effect of the valve can be ensured.

Description

Rubber flap check valve

Technical Field

The utility model relates to the technical field of check valves, in particular to a rubber flap check valve.

Background

The check valve is a valve in which an opening and closing member is a circular valve flap and acts by its own weight and pressure of a medium to block the reverse flow of the medium, and functions to allow the medium to flow in only one direction and to block the reverse flow. Normally, such valves are self-actuating, in which the flap opens under the action of fluid pressure flowing in one direction and, in the opposite direction, the flap is urged against the valve seat by the fluid pressure and the self-weight of the flap, thereby shutting off the flow.

The flap type check valve is a valve which is favored by people in the check valve due to the reasons of low cost and high efficiency, but the traditional flap type check valve can only generally have a single-flow one-way function and cannot be expanded, and because the flap type check valve has the phenomenon that the valve plate rotates inside, rust on a connecting piece or water seepage at the valve plate often occurs, no scheme for improving the condition exists in the market at present, and therefore the novel solution is provided.

SUMMERY OF THE UTILITY MODEL

The present invention is directed to a rubber flap check valve to solve the problems set forth in the background art.

In order to achieve the purpose, the utility model provides the following technical scheme: the utility model provides a rubber lamella check valve, includes the valve bonnet, valve bonnet both sides fixedly connected with side is taken over, and valve bonnet bottom fixedly connected with bottom is taken over, and wherein, inside lamella formula subassembly that is provided with is taken over to valve bonnet and side, and lamella formula subassembly includes two sets of dead levers, and every group dead lever is provided with two, and two sets of symmetries set up, are fixed in respectively on the side takeover inner wall of both sides, fixedly connected with horizontal pole between two dead levers of every group, and horizontal pole middle part fixedly connected with has elasticity stop gear.

Preferably, the elastic limiting mechanism comprises a connecting rod, one end of the connecting rod is fixedly connected with a limiting piece, one side of the limiting piece is provided with a return spring, and the return spring is sleeved on the surface of the connecting rod.

Preferably, the two sides are connected with a first baffle ring fixedly connected to the inner wall of the side connecting pipe, a sealing valve plate is arranged on one side of the first baffle ring, the sealing valve plate is movably connected to the surfaces of the limiting rod and the connecting rod, and the reset spring is located between the limiting plate and the sealing valve plate.

Preferably, a second stop ring is fixedly connected to the joint of the valve cover and the side connecting pipe, a movable valve plate is movably connected to the position, close to the middle, of the limiting rod, and the diameter of the movable valve plate is consistent with that of the second stop ring.

Preferably, the diameter of the sealing valve plate is consistent with that of the first retaining ring, and the diameters of the first retaining ring, the second retaining ring, the sealing valve plate and the movable valve plate are consistent with that of the inner wall of the side connecting pipe.

Compared with the prior art, the utility model has the beneficial effects that:

(1) this rubber lamella check valve, through the setting of lamella formula subassembly and the external design of this valve, the device can realize single current list effect and double current list effect simultaneously, makes the application range of its this valve widen, compares in traditional rotatory lamella check valve's setting simultaneously, and this valve can be better through the setting of removal valve block guarantee this valve can not appear in the use the phenomenon of leaking in valve block department to can guarantee the result of use of this valve.

(2) This rubber lamella check valve, through reset spring's setting, this valve can carry out the valve degree of opening automatically according to the size of rivers, has very strong practicality, and the device's valve block all moves about on gag lever post and connecting rod basically simultaneously, and the braking mode is simple and can not corrode easily for rubber mechanism, has longer life.

Drawings

FIG. 1 is a schematic diagram of the main structure of the present invention;

FIG. 2 is a schematic cross-sectional view of the present invention;

FIG. 3 is a schematic view of a petal assembly of the present invention;

FIG. 4 is a schematic view of a right shaft structure of the card of the present invention.

In the figure: 1. a valve housing; 2. side edge pipe connection; 3. a bottom connection pipe; 4. a flapper assembly; 5. fixing the rod; 6. a cross bar; 7. a connecting rod; 8. a return spring; 9. a limiting sheet; 10. a first retainer ring; 11. a sealing valve plate; 12. a second retainer ring; 13. a limiting rod; 14. the valve plate is moved.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

It should be noted that in the description of the present invention, the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, which are only for convenience of description and simplification of description, and do not indicate or imply that the referred device or element must have a specific orientation, be configured in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention.

Further, it will be appreciated that the dimensions of the various elements shown in the figures are not drawn to scale, for ease of description, and that the thickness or width of some layers may be exaggerated relative to other layers, for example.

It should be noted that like reference numerals and letters refer to like items in the following figures, and thus, once an item is defined or illustrated in one figure, it will not need to be further discussed or illustrated in detail in the description of the following figure.

As shown in fig. 1 to 4, the present invention provides a technical solution: a rubber flap check valve comprises a valve cover 1, wherein the valve cover 1 is made of stainless steel, the stainless steel has excellent corrosion resistance, formability, compatibility and toughness, the valve cover 1 can have strong corrosion resistance and long service life, two sides of the valve cover 1 are fixedly connected with side connecting pipes 2, the side connecting pipes 2 are used for connecting water pipes on two sides and are generally connected by flanges, the water pipes on two sides are water outlet pipes, water flows from two sides to a bottom connecting pipe 3, the bottom of the valve cover 1 is fixedly connected with a bottom connecting pipe 3, the bottom connecting pipe 3 is also generally connected with the water pipes by a sending flange, flap type components 4 are arranged inside the valve cover 1 and the side connecting pipes 2, the flap type components 4 are valve pieces for controlling water flow direction and opening and closing, each flap type component 4 comprises two groups of fixing rods 5, two groups of fixing rods 5 are arranged, and are symmetrically arranged, on the side takeover 2 inner walls of being fixed in both sides respectively, fixedly connected with horizontal pole 6 between two dead levers 5 of every group, horizontal pole 6 middle part fixedly connected with elasticity stop gear.

As the preferred scheme of this scheme, it needs to be known that, elasticity stop gear includes connecting rod 7, connecting rod 7 one end fixedly connected with spacing piece 9, spacing piece 9 one side is provided with reset spring 8, this reset spring 8 is extension spring, extension spring is opposite with compression spring's theory of operation, compression spring is the reverse effect when compressing tightly, extension spring then is the reverse effect when extending or pulling open, when extension spring both ends pull open, the spring then can try to pull back them together, this extension spring elasticity is lower, the deflection is big, under spacing piece 9's effect, this reset spring 8 is turndown and takes place the deformation comparatively easily, reset spring 8 cup joints in connecting rod 7 surface.

In order to ensure the smooth implementation of the scheme, it should be understood that the inner walls of the two side connection pipes 2 are fixedly connected with the first baffle ring 10, the sealing valve plate 11 is arranged on one side of the first baffle ring 10, the first baffle ring 10 and the sealing valve plate 11 are both made of nitrile rubber, the nitrile rubber has very excellent oil resistance and corrosion resistance, and simultaneously, the wear resistance, the aging resistance and the air tightness of the nitrile rubber are all due to other rubbers used for sealing, so that the sealing performance of the nitrile rubber is good, the water seepage and leakage phenomena are avoided, and the nitrile rubber can also keep a long service life in water for a long time due to the excellent corrosion resistance and the oil resistance of the nitrile rubber, the sealing valve plate 11 is movably connected to the surfaces of the limiting rod 13 and the connecting rod 7, and the reset spring 8 is located between the limiting plate 9 and the sealing valve plate 11.

Meanwhile, a second stop ring 12 is fixedly connected at the joint of the valve cover 1 and the side connection pipe 2, a movable valve plate 14 is movably connected at the position, close to the middle, of the limiting rod 13, similarly, the second stop ring 12 and the movable valve plate 14 are made of nitrile rubber, and the diameter of the movable valve plate 14 is consistent with that of the second stop ring 12, so that the sealing performance of the valve is ensured, the diameter of the sealing valve plate 11 is consistent with that of the first stop ring 10, and the diameter of the first stop ring 10, that of the second stop ring 12, that of the sealing valve plate 11 and that of the movable valve plate 14 are consistent with that of the inner wall of the side connection pipe 2.

Therefore, the device is a double-flow one-way rubber flap valve, the valve is supplied with water from the side connecting pipes 2 at two sides, the water is converged towards the middle, under the condition of no water flow, the sealing valve plates 11 at two sides are almost attached to the first baffle ring 10, when the water flow impacts the sealing valve plates 11, the sealing valve plates 11 can move towards the valve cover 1, and under the action of the reset spring 8, the moving distance is limited, the larger the water flow is, the larger the moving distance of the sealing valve plates 11 is, if the water flow at two sides is not the same, in order to prevent the water flow from flowing from one end to the other end, the moving valve plates 14 are arranged in the middle of the valve cover 1, so that the water flow at two sides can impact on the moving valve plates 14, a large amount of transverse kinetic energy is reduced, the water flow can flow towards the bottom connecting pipe 3, meanwhile, the valve can be used for double-flow conveying, also can realize one-way conveying, when the water flow flows from the side connecting pipes 2 at one side, the same meeting of rivers flows, the difference is, when rivers remove to valve bonnet 1 department, rivers can take over 2 promotion to the side of another side with moving valve block 14, random moving valve block 14 can laminate on the second fender ring 12 of opposite side, make moving valve block 14 and second fender ring 12 laminate mutually, make it sealed, realize taking over 3 unidirectional flow to the bottom, simultaneously, because the valve block 11 that seals of both sides all laminates in one side of first fender ring 10, like this, if there is the rivers impact of opposite side, it can tightly laminate on first fender ring 10 equally to seal valve block 11, with this kind of mode just realize double seal, its leakproofness obtains once again the guarantee.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.

Claims

1. A rubber flap check valve, includes valve bonnet (1), its characterized in that: valve bonnet (1) both sides fixedly connected with side is taken over (2), and valve bonnet (1) bottom fixedly connected with bottom is taken over (3), wherein, inside lamella formula subassembly (4) that is provided with of valve bonnet (1) and side take over (2), lamella formula subassembly (4) include two sets of dead lever (5), every group dead lever (5) are provided with two, two sets of symmetry sets up, be fixed in respectively on the side of both sides is taken over (2) inner wall, fixedly connected with horizontal pole (6) between two dead levers (5) of every group, horizontal pole (6) middle part fixedly connected with has elasticity stop gear.

2. A rubber flap check valve according to claim 1, wherein: the elastic limiting mechanism comprises a connecting rod (7), one end of the connecting rod (7) is fixedly connected with a limiting piece (9), a reset spring (8) is arranged on one side of the limiting piece (9), and the reset spring (8) is sleeved on the surface of the connecting rod (7).

3. A rubber flap check valve according to claim 1, wherein: both sides the equal fixedly connected with of side takeover (2) inner wall keeps off ring (10), and first fender ring (10) one side is provided with seals valve block (11), seals valve block (11) swing joint in gag lever post (13) and connecting rod (7) surface, and reset spring (8) are located between spacing piece (9) and the valve block (11) that seals.

4. A rubber flap check valve according to claim 1, wherein: the valve cover (1) and the side connecting pipe (2) are fixedly connected with a second retaining ring (12), a movable valve plate (14) is movably connected to the position, close to the middle, of the limiting rod (13), and the diameter of the movable valve plate (14) is consistent with that of the second retaining ring (12).

5. A rubber flap check valve according to claim 3 wherein: the diameter of the sealing valve plate (11) is consistent with that of the first retaining ring (10), and the diameters of the first retaining ring (10), the second retaining ring (12), the sealing valve plate (11) and the movable valve plate (14) are consistent with that of the inner wall of the side connecting pipe (2).