CN203627934U - Check valve - Google Patents

Abstract

A check valve comprises a valve body and a stop element, wherein the valve body is hollow and tubular and is provided with a front end part and a rear end part, a plurality of guide ribs are arranged in the valve body, the guide ribs are provided with limiting parts at the front end part of the valve body, the front end part of the valve body is provided with a propping ring, and the rear end part of the valve body is provided with a sealing element; the stop element is a hollow shell with an opening at one side, the opening end of the stop element is provided with a guide ring enclosure, a plurality of guide blades are arranged on the guide ring enclosure at intervals, the guide ring enclosure and the guide blades are respectively matched with the guide ribs of the valve body and the inner diameter of the valve body, and the guide blades are respectively accommodated between two adjacent guide ribs; the closed end of the blocking component is provided with an arc-shaped surface to increase the stress area of the blocking component, and the arc-shaped surface is utilized to lead the pressure of the liquid flowing into the blocking component to the center of the arc-shaped surface, so that the blocking component is stressed intensively and moves more stably.

Description

check valve

technical field

The utility model relates to a non-return valve, especially a valve body with a stop element, and a guide ring and guide blades on the stop element, so that the stop element can move stably in the valve body, and The arc-shaped surface of the hollow stop element is used to concentrate the force of the stop element and increase the force area, so as to achieve the structure innovation of the check valve that prevents backflow and moves stably.

Background technique

The existing non-return valve structure adopts the sheet-shaped valve structure to prevent the liquid from flowing backwards. Since the valve with the sheet-shaped structure has poor adhesion to the anti-leakage ring when the liquid flows backwards, it is difficult to prevent it completely. Liquid backflow.

As shown in Figure 1, it is another embodiment of the existing check valve structure. The check valve 1 is provided with a hollow valve body 10, and a valve ball 11 is established in the hollow valve body 10. The aforementioned The first end 12 of the valve body 10 is connected to a first joint 120, and a restrictive ring 130 and an anti-leakage ring 131 are provided at the second end 13. When the aforementioned second end 13 is combined with the second joint 132, The restricting ring 130 and the anti-leakage ring 131 cooperate with the valve ball 11 to prevent the liquid in the valve body 10 from flowing backward. However, because the spherical surface of the valve ball 11 of the existing check valve structure can disperse the pressure of the liquid, the pressure on the valve ball 11 is reduced, and the tightness between the valve ball 11 and the leak-proof ring 131 is reduced, resulting in liquid leakage Backflow, forming blemishes.

For this reason, the inventor of the present utility model has accumulated many years of manufacturing experience and research related to valves in view of the aforementioned prior art, studied the problems existing in the aforementioned check valves, and invented the present case.

Utility model content

The purpose of this utility model is to provide a special blocking element structure which can be applied to various valves, so as to effectively solve the problem of poor anti-leakage effect of existing check valves and the inability to fully prevent liquid backflow.

A check valve of the present utility model, wherein the valve body is hollow tubular to accommodate a stop element, the valve body is provided with a front end and a rear end, and a plurality of guide ribs are arranged in the valve body, and the guide ribs are located in the valve body. A restricting portion is provided at the front end of the valve body to prevent the blocking element from detaching from the front end of the valve body.

A check valve of the present utility model, wherein the blocking element is a hollow shell with an opening on one side, the opening end of the aforementioned blocking element is provided with a guide ring, and a plurality of guide vanes are arranged at intervals around the guide ring, The aforesaid guide ring and guide blades are respectively arranged to cooperate with the guide ribs of the valve body and the inner diameter of the valve body, and the aforesaid plurality of guide vanes are respectively accommodated between two adjacent guide ribs, and the closed ends of the aforementioned stopper elements are arranged in an arc shape. noodle.

A check valve of the present utility model, wherein the stop element is a hollow arc-shaped shell with an opening on one side, and a plurality of guide vanes are arranged at intervals at the opening end of the stop element, and the guide vanes cooperate with the guide ribs of the valve body. and the inner diameter of the valve body, and the plurality of guide vanes are respectively accommodated between two adjacent guide ribs, using the arc-shaped surface of the closed end of the aforementioned stop element to increase the force-bearing area of the stop element, and using the The arc-shaped surface guides the pressure of the liquid flowing into the blocking element to the center of the arc-shaped surface, so that the force of the blocking element is concentrated and the movement is more stable.

A check valve of the present utility model, wherein the stop element is a solid structure, one end of the stop element is provided with a guide ring, and a plurality of guide vanes are arranged at intervals around the guide ring, the guide ring and the guide vanes are respectively It is arranged to cooperate with the guide ribs of the valve body and the inner diameter of the valve body, and the aforementioned plurality of guide vanes are respectively accommodated between two adjacent guide ribs, and the other end of the aforementioned stop element 2 is provided with an arc-shaped surface 21; When the water pressure in the check valve is low, the weight of the blocking element itself can be used to provide greater sealing pressure when the arc-shaped surface is combined with the pressing part of the valve body, so as to prevent liquid leakage and reverse flow.

In this way, the hollow structure of the blocking element can increase the force-bearing area of the blocking element to withstand greater fluid pressure, and convert the fluid pressure into the combined force of the blocking element and the sealing element or the leak-proof ring, and the blocking element The arc-shaped surface structure of the stopping element can concentrate the pressure of the liquid and prevent the stopping element from deflecting due to uneven force, so as to truly achieve the effect of preventing the liquid from flowing backward.

Description of drawings

The above and other objects, features and advantages of the present utility model will be apparent from the following description of the gist of the utility model and the preferred embodiments of its use and accompanying drawings, in which:

Fig. 1 is a sectional view of a conventional check valve.

Fig. 2 is a cross-sectional view of the forward movement of the check valve in embodiment (1) of the present utility model.

Fig. 3 is a cross-sectional view of the non-return state of the non-return valve in embodiment (1) of the present utility model.

Fig. 4 is a bottom view of the valve body of embodiment (1) of the present utility model.

Fig. 5 is a cross-sectional view along line A-A in Fig. 4 .

Fig. 6 is a top view of the stopping element of the embodiment (1) of the present utility model.

Fig. 7 is a cross-sectional view along line B-B in Fig. 6 .

Fig. 8 is a bottom sectional view of the combination of the valve body and the stopper element in the embodiment (1) of the present utility model.

Fig. 9 is a sectional view of Embodiment (2) of the present utility model.

Fig. 10 is a cross-sectional view of Embodiment (3) of the present utility model.

Fig. 11 is a partial top sectional view of Embodiment (3) of the present utility model.

Fig. 12 is a cross-sectional view of the check valve of the fourth embodiment of the utility model.

[Description of main component symbols]

Body 1

front end 10 abutment ring 100 leak stop ring 101 first bolting part 102

Rear end 11 Second bolt setting part 110

Guide rib 12 restricting part 120

Sealing element 13 inner plug ring 130 pressing piece 131 pressing ring 132

Liquid through hole 133

Stop element 2 Guide ring circumference 20 Guide vane 200 Interval space 201

Plane 202

Arc surface 21 Liquid container 22

first joint 3

Second Connector 4

Body 5

The first combined ring circumference 50 perforation 500

The second combined ring circumference 51 and perforation 510

Extension 52 Third Combination Surrounding 520 Cover 521 Fixing Seat 522

stop element 6

Top ring circumference 60 Leak stop ring 61 Connecting part 62 Arc surface 63

Entrance A, Exit B

Detailed ways

In order to further understand the non-return valve of this invention, as shown in Figure 2-10, it is an embodiment (1) of this utility model, which at least includes:

The valve body 1, as shown in Figure 2-5, is hollow tubular to accommodate a stop element 2, the aforementioned valve body 1 is provided with a front end 10 and a rear end 11, and a plurality of guide ribs are arranged in the valve body 1 12. The aforementioned guide rib 12 is provided with a restricting portion 120 at the front end 10 of the valve body 1 to prevent the stop element 2 from detaching from the front end 10 of the valve body 1; the front end 10 of the aforementioned valve body 1 is provided with a top ring 100, The abutting ring 100 is provided with a leak-proof ring 101, so that when the aforementioned valve body 1 is combined with the first joint 3, the valve body 1 and the first joint 3 can be tightly combined by using the first bolt setting part 102, and the aforementioned valve body 1 can be tightly combined with the first joint 3, and the aforementioned valve body 1 can be tightly combined with the first joint 3, and the valve body 1 can be tightly combined with the first joint 3 by using the aforementioned anti-leakage ring 101. The leakage ring 101 achieves the effect of preventing liquid leakage. The rear end 11 of the aforementioned valve body 1 is provided with a sealing element 13, so that when the aforementioned valve body 1 is combined with the second joint 4, the valve body 1 and the second joint 4 can be tightly combined by using the second bolt setting part 110, and the aforementioned The sealing element 13 achieves the effect of preventing liquid leakage; the aforementioned sealing element 13 is composed of an inner plug ring 130 and a pressing member 131, and the aforementioned inner plug ring 130 is made of a hard material to utilize the inner plug ring 130 The guide rib 12 of the valve body 1 is against each other to achieve the purpose of supporting the urging member 131, and the aforementioned urging member 131 is made of elastic material, and the urging member 131 is provided with a urging ring 132 to form The liquid through hole 133, when the fluid pressure is greater, the extrusion force of the blocking element 2 is just greater, so as to utilize the elasticity of the pressing element 131, the blocking element 2 can be further penetrated into the pressing ring of the pressing element 131. In the enclosure 132, the closeness of the two is increased, and the liquid through hole 133 is closed, so that there will never be a problem of liquid leakage and backflow.

The stop element 2, as shown in Figures 2, 3, 6 and 7, must be made of plastic material or metal material, depending on actual needs, one side of which is a hollow shell with an opening, the aforementioned stop element 2 A guide ring 20 is provided at the opening end, and a plurality of guide vanes 200 are arranged at intervals on the guide ring 20. The aforementioned guide ring 20 and guide vanes 200 are designed to match the guide rib 12 of the valve body 1 and the inner diameter of the valve body 1 respectively. , and the plurality of guide vanes 200 are respectively accommodated between two adjacent guide ribs, so that the stopper element 2 will not rotate and deviate arbitrarily. The ring 20 moves in cooperation with the guide rib 12, and uses the aforementioned guide vane 200 to abut against the inner wall of the valve body 1, so that the stop element 2 will not be deflected due to sudden uneven force , but cannot be tightly combined with the sealing element 13, and the space 201 between the aforementioned plurality of guide vanes 200 must be used to provide a circulation channel for the liquid in the valve body 1, so that the liquid in the valve body 1 can flow smoothly. The closed end of the aforementioned blocking element 2 is provided with an arcuate surface 21, and the liquid pressure flowing into the blocking element 2 is guided to the center of the arcuate surface 21 by using the arcuate surface 21, so that the force of the blocking element 2 is concentrated. And the movement is more stable and smooth, reducing the offset of the blocking element 2, and the problem of being irreversible. The arc surface 21 can also be used to cooperate with the pressing member 131 of the aforementioned valve body 1 to provide different pressure changes with different pressures. The tightness can really prevent the leakage and reverse flow of liquid.

As shown in Figure 2, a liquid container 22 is provided on the aforementioned blocking element 2, the purpose of which is that when the check valve operates in the forward direction, that is, after the liquid enters the inside of the check valve from the inlet A, it will flow to the blocking element. The front end of the arc-shaped surface 21 of 2 and the inner side of the guide vane 200 generate a thrust, so that the stopper element 2 must be pushed forward, so that the stopper element 2 leaves the pressing member 131 of the aforementioned sealing element 13. As mentioned above, the liquid from the inlet A It can pass through the check valve and then enter the pipeline (not shown in the figure) through outlet B; A will not have any liquid from the front end of the pipeline, so that the front end of the stop element 2 has an arc-shaped surface 21 and the outer surface of the guide vane 200. The thrust of the liquid from the inlet A is almost zero, or its thrust is extremely smaller than that from the outlet. B. The thrust of the liquid that flows back into the check valve to the blocking element 2; at this time, in order to strengthen the reverse blocking effect of the aforementioned blocking element 2, the aforementioned liquid tank 22 is used to withstand the reverse flow from entering the backstop In this way, when the blocking element 2 is in the reverse state, not only can the liquid container 22 be used to hold the liquid, so as to increase the speed of the reverse movement of the blocking element 2, so that the aforementioned blocking element can be moved more quickly. The arc-shaped surface 21 provided by the element 2 must correspond to the pressing ring 132 of the pressing member 131 of the sealing element 13, so that the arc-shaped surface 21 of the aforementioned blocking element 2 can close the sealing element 13. The liquid through hole 133 of the pressing member 131; and in the backstop state, because the aforementioned liquid container 22 holds the liquid, the weight of the blocking element 2 can be increased, the backstop effect can be improved, and the liquid can be prevented from flowing back from the outlet. Inlet front-end piping.

Or as shown in Figure 9, the stop element 2 of the embodiment (2) must be made of plastic material or metal material, depending on the actual needs, it is not necessary to set the guide ring 20, but directly on the arc of the stop element 2 A plurality of guide vanes 200 are arranged at intervals around the shape surface 21, and the guide vanes 200 are also arranged in conjunction with the guide ribs 12 of the valve body 1 and the inner diameter of the valve body, so that the aforementioned plurality of guide vanes 200 can be respectively accommodated in two adjacent guide vanes. Between the ribs, the blocking element 2 will not be rotated and shifted arbitrarily, so that the volume of the blocking element 2 can be reduced, so that the blocking element 2 can be used in a shorter valve body 1 structure, increasing the practicality of the utility model sex.

Or as shown in Figures 10 and 11, the stop element 2 of the embodiment (three) must be made of plastic material or metal material, and depending on the actual demand, it must also be a solid structure to increase the weight of the stop element 2, as mentioned above One end of the stop element 2 is provided with a guide ring 20, and a plurality of guide vanes 200 are arranged at intervals on the guide ring 20. The guide ring 20 and the guide vanes 200 are matched with the guide rib 12 of the valve body 1 and the valve body 1 respectively. , and the plurality of guide vanes 200 are respectively accommodated between two adjacent guide ribs, so that the stopper element 2 will not rotate and deviate arbitrarily, when the aforementioned stopper element 2 moves in the valve body 1 , the aforementioned guide ring 20 and the guide rib 12 must be used to cooperate to move, and the aforementioned guide vane 200 and the inner wall surface of the valve body 1 are used to butt against each other, so that the blocking element 2 will not be blocked due to sudden uneven force. The stop element 2 is deflected and cannot be tightly combined with the sealing element 13, and the space 201 between the aforementioned plurality of guide vanes 200 must be used to provide a circulation channel for the liquid in the valve body 1, so that the liquid in the valve body 1 can be smoothly For circulation, a flat surface 202 is set at the front end of the guide ring 20 of the aforementioned blocking element 2, which can produce the same effect as the aforementioned embodiments (1) and (2). The purpose is to speed up the closing speed and keep it closed when the backstop operates State, to achieve the problem of preventing liquid leakage; the other end of the aforementioned blocking element 2 is provided with an arc-shaped surface 21, the purpose of which is to operate correspondingly to the aforementioned pressing member 131. In this way, when the water pressure in the check valve is low, the weight of the blocking element 2 itself can be used to provide greater sealing pressure when the arc surface 21 is combined with the pressing member 131 of the valve body 1 , Really prevent liquid leakage and backflow.

As shown in Figure 12, it is an embodiment (four) of the check valve described in the present utility model, which at least includes:

Valve body 5, which is a hollow tubular body, the upper and lower ends of the valve body 5 are respectively provided with a first combination ring 50 and a second combination ring 51, and the first combination ring 50 and the second combination Surrounding 51 is provided with a plurality of perforations 500, 510, so as to utilize the first combining surrounding 50 and the second combining surrounding 51 to combine with adjacent pipe fittings respectively. One side of the aforementioned valve body 5 is provided with an extending portion 52, and the extending portion 52 The end part is provided with a third joint ring 520, and a plurality of perforations are set in the third joint circle 52 to bolt a cover 521, and a fixed seat 522 is provided in the aforementioned extension part 52, and a stopper is provided on the shaft. Element 6.

The stop element 6 must be made of plastic material or metal material, depending on the actual needs, it is a hollow shell with an opening on one side, and the opening end of the aforementioned stop element 6 is provided with a top ring 60, and a An anti-leakage ring 61 is provided below the ring 60, so that the anti-leakage ring 61 can be combined with the wall surface of the aforementioned valve body 5, and a connecting portion 62 is arranged on one side of the aforementioned abutting ring 60, so that the connecting portion 62 can be used to The fixed seat 522 of the aforementioned valve body 5 is arranged axially with each other, so that the stop element 6 can rotate freely in the valve body 5; The pressure of the liquid in the blocking element 6 is guided to the center of the arc surface 63, so that the force of the blocking element 6 is concentrated and it is not easily shaken by the pressure of the liquid, thus preventing the liquid from leaking back.

In this way, the check valve structure described in the utility model can be applied to various valve structures, and is not limited to the above-mentioned embodiments. The hollow structure of the stop element can increase the force-bearing area of the stop element to withstand Larger fluid pressure, and convert the fluid pressure into the combined force of the blocking element and the sealing element or the leak-proof ring, and the arc surface structure of the blocking element can concentrate the pressure of the liquid, preventing the blocking element from Uniform stress and deflection, in order to really achieve the effect of preventing liquid backflow, with better practicality and economic benefits.

Claims (11)

1. A non-return valve, characterized in that it comprises at least: The valve body is hollow tubular to accommodate a stopper. The valve body is provided with a front end and a rear end, and a plurality of guide ribs are arranged in the valve body. The guide ribs are provided with a restriction at the front end of the valve body to prevent the stop element from detaching from the front end of the valve body, the front end of the valve body is provided with a top ring, and the rear end of the valve body is provided with a sealing element; The stop element is a hollow shell with an opening on one side. The opening end of the stop element is provided with a guide ring, and a plurality of guide vanes are arranged at intervals around the guide ring. The guide ring and the guide vanes respectively cooperate with each other. The guide ribs of the valve body and the inner diameter of the valve body are provided, and the aforementioned plurality of guide vanes are respectively accommodated between two adjacent guide ribs; the aforementioned stop element is provided with a liquid container; Shaped surface to increase the force-bearing area of the blocking element, and use the arc-shaped surface to direct the liquid pressure flowing into the blocking element to the center of the arc-shaped surface, so that the force of the blocking element is concentrated and the movement is more stable ; In this way, the guide vane provided by the aforementioned blocking element can be used to increase the moving speed of the aforementioned blocking element when operating in the forward direction, and accelerate the effect of the aforementioned blocking element to open the aforementioned sealing element; The liquid that reversely enters the check valve can enter the aforementioned liquid container and push the aforementioned guide vane at the same time, so as to accelerate the sealing effect of the aforementioned blocking element on the aforementioned sealing element. 2. A check valve, characterized in that it comprises at least: The valve body is hollow tubular to accommodate a stopper. The valve body is provided with a front end and a rear end, and a plurality of guide ribs are arranged in the valve body. The guide ribs are provided with a restriction at the front end of the valve body to prevent the stop element from detaching from the front end of the valve body, the front end of the valve body is provided with a top ring, and the rear end of the valve body is provided with a sealing element; The stop element is a hollow arc-shaped shell with an opening on one side, and a plurality of guide vanes are arranged at intervals at the opening end of the stop element, and the guide vanes are arranged to match the guide ribs of the valve body and the inner diameter of the valve body, and The aforementioned plurality of guide vanes are respectively accommodated between two adjacent guide ribs; the aforementioned stop element is provided with a liquid container; In order to increase the force-bearing area of the blocking element, and use the arc-shaped surface to guide the liquid pressure flowing into the blocking element to the center of the arc-shaped surface, so that the force of the blocking element is concentrated and the movement is more stable; In this way, the guide vane provided by the aforementioned blocking element can be used to increase the moving speed of the aforementioned blocking element when operating in the forward direction, and accelerate the effect of the aforementioned blocking element to open the aforementioned sealing element; The liquid that reversely enters the check valve enters the aforementioned liquid container and simultaneously pushes the aforementioned guide vane, thereby accelerating the effect of the aforementioned blocking element closing the aforementioned sealing element. 3. A check valve, characterized in that it comprises at least: The valve body is hollow tubular to accommodate a stopper. The valve body is provided with a front end and a rear end, and a plurality of guide ribs are arranged in the valve body. The guide ribs are provided with a restriction at the front end of the valve body to prevent the stop element from detaching from the front end of the valve body, the front end of the valve body is provided with a top ring, and the rear end of the valve body is provided with a sealing element; The stop element is a solid structure. One end of the aforementioned stop element is provided with a guide ring, and a plurality of guide vanes are arranged at intervals around the guide ring. The aforementioned guide ring and guide vanes respectively cooperate with the guide ribs of the valve body and the The inner diameter is set, and the plurality of guide vanes are respectively accommodated between two adjacent guide ribs, the aforementioned stop element is provided with a plane, and the other end is provided with an arc-shaped surface; In this way, the guide vane set by the aforementioned blocking element can be used to increase the moving speed of the aforementioned blocking element during forward operation, and accelerate the effect of the aforementioned blocking element to open the aforementioned sealing element; or in the backstop state, by The liquid that reversely enters the check valve pushes the aforementioned plane and simultaneously pushes the aforementioned guide vane, so as to speed up the effect of the aforementioned blocking element closing the aforementioned sealing element. 4. The check valve according to any one of claims 1-3, characterized in that, the abutting ring of the valve body is surrounded by a leak-proof ring, and a first joint is provided at the end of the valve body And the first bolting part, when the valve body is combined with the first joint, the first bolting part is used to tightly combine the valve body and the first joint, and the aforementioned anti-leakage ring is used to prevent liquid leakage. 5. The check valve according to any one of claims 1-3, characterized in that, the rear end of the valve body is provided with a second joint and a second bolt, so that the valve body and the second joint When combined, the valve body and the second joint must be tightly combined by using the second bolting part, and the effect of preventing liquid leakage can be achieved by using the aforementioned sealing element. 6. The check valve according to any one of claims 1-3, wherein the aforementioned sealing element is composed of an inner plug ring and an urging member, and the aforementioned urging member is provided with an urging ring, to form a liquid through hole. 7. The check valve according to claim 6, wherein the inner plug ring is made of a hard material, so that the inner plug ring and the guide rib of the valve body are pushed against each other to support the pressing member the goal of. 8. The non-return valve according to claim 6, characterized in that, the aforementioned pressing member is made of elastic material, and utilizing the elasticity of the pressing member, the stopper element can go deep into the pressing member as the pressure changes. Inside, increase the closeness of the two. 9. The check valve according to any one of claims 1-3, characterized in that a space is formed between the plurality of guide vanes to provide a circulation channel for liquid in the valve body. 10. A check valve, characterized in that it comprises at least: The valve body is a hollow pipe body, and the upper and lower ends of the aforementioned valve body are respectively provided with a first joint ring and a second joint ring, so as to use the first joint ring and the second joint ring to communicate with adjacent joints respectively. The pipe fittings are combined, an extension is provided on one side of the aforementioned valve body, a third joining ring is provided at the end of the extension, and a cover is provided by bolts, a fixed seat is provided in the aforementioned extension, and a stop element is provided by the shaft; The blocking element is a hollow shell with an opening on one side. The opening end of the aforementioned blocking element is provided with a top ring, and an anti-leakage ring is provided under the top ring to utilize the anti-leakage ring and the aforementioned The wall surfaces of the valve body are combined with each other, and a connecting part is provided on one side of the abutting ring, so that the connecting part and the fixed seat of the aforementioned valve body are mutually arranged axially, so that the blocking element can rotate freely in the valve body; The closed end of the stop element is provided with an arc-shaped surface to increase the force-bearing area of the stop element, and the arc-shaped surface is used to guide the liquid pressure flowing into the stop element to the center of the arc-shaped surface, so that the force-bearing area of the stop element The force is concentrated and the movement is more stable. 11. The check valve according to claim 10, characterized in that, the first joint ring and the second joint ring are respectively provided with a plurality of perforations for interlocking with adjacent pipe pieces.

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