Novel flap valve

Abstract

The utility model discloses a novel flap valve which comprises a flap valve assembly, a standard flange, a valve body, an extension plate, a valve cover and a hinge, the standard flange and the valve body are connected in a welded mode, the extension plate is welded with the standard flange, the valve cover is combined with the valve body in a split mode, and the hinge is connected with the extension plate and the valve cover. The stabilizing blocks are perpendicular to the extending plates, limiting rods and symmetrically-distributed sliding rails are fixed between the opposite inner surfaces of the stabilizing blocks through bolts, the outer sides of the limiting rods are sleeved with resistance springs, and resistance elastic plates are welded to the inner side walls of the stabilizing blocks; the pushing block is attached to the stabilizing block; the flap valve is provided with a blocking design for preventing the valve cover from being greatly opened, when water flow impacts the valve cover to be opened, the opened valve cover acts on the inclined push rod, the push rod pushes the push block, the extrusion block and the sliding block to move, the extrusion block is subjected to the resistance effect of the resistance elastic plate and the resistance spring, continuous opening of the valve cover can be avoided, and closing of the valve cover under the dead weight is facilitated.

Description

Technical Field

[0001] This utility model belongs to the field of flap valve technology, and specifically relates to a novel flap valve. Background Technology

[0002] A flap valve is a type of valve that automatically opens and closes using water pressure. It mainly consists of a valve seat and a valve cover plate. Its principle is that when closed, the valve cover plate fits tightly against the valve seat under its own weight, preventing water from flowing back into the pipe. When water overflows from inside the pipe, it exerts an outward pressure on the valve plate, causing the valve cover plate to open and allowing water to flow out smoothly. It is mainly used in water conservancy projects, municipal drainage, industrial wastewater treatment, flood control, and drainage. It features a simple structure and requires no manual operation, and is widely used in drainage pipelines to prevent backflow of external water.

[0003] When flap valves are used in drainage pipes, if the water flow has a large impact force on the valve cover plate, the valve cover plate will open to a large extent, which may cause the valve cover plate to fail to close in time or even fail to close at all. The flap valve does not have a design to restrict the opening of the valve cover plate, so it cannot guarantee that the valve cover plate can close in time after it opens, which is a shortcoming.

[0004] Existing flap valves have the problem of lacking a design that prevents the valve cover from opening too wide during use. To address this, this application proposes a novel flap valve. Utility Model Content

[0005] The purpose of this utility model is to provide a novel flap valve to solve the problem mentioned in the background art of the lack of a blocking design on the flap valve to prevent the valve cover plate from opening significantly.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a novel flap valve, comprising...

[0007] A flap valve assembly includes a standard flange and valve body welded together, an extension plate welded to the standard flange, a valve cover separately attached to the valve body, and a hinge connecting the extension plate and the valve cover, on which a fixing plate is welded.

[0008] A stabilizing block for a vertical extension plate, wherein a limiting rod and symmetrically distributed slide rails are fixed between the opposing inner surfaces of the stabilizing block by bolts, a resistance spring is sleeved on the outer side of the limiting rod, and a resistance spring plate is welded to the inner sidewall of the stabilizing block;

[0009] A push block that fits into the stabilizing block, wherein a slider that is slidably sleeved on the outside of the slide rail and a pressing block that is slidably sleeved on the outside of the limiting rod are welded on the push block, and a fixing half ring is provided on the surface of the push block away from the stabilizing block;

[0010] The push rod that connects the fixed half-ring and the fixed plate.

[0011] Preferably, the stabilizing block includes a vertical portion and an inclined portion, the pushing block is in contact with the surface of the inclined portion of the stabilizing block, and the extension plate is connected to the vertical portion.

[0012] Preferably, the push rod is in an inclined state, the inclined top end of the push rod is connected to the fixed half ring, the two ends of the push rod are circular ring structures, and the fixed half ring and the fixed plate are respectively connected to the circular ring ends of the push rod.

[0013] Preferably, the slider has a groove that mates with the slide rail, and the slide rail has a "T"-shaped three-dimensional structure.

[0014] Preferably, the extrusion block has an isosceles trapezoidal three-dimensional structure, and the resistance spring plate includes a fixed part connected to the inner wall of the stabilizing block and a movable part at the other end.

[0015] Preferably, the valve body has an inner flow collector ring welded inside, and the inner surface of the circular inner flow collector ring has a shape that gradually expands and extends from the center a to the outer side b.

[0016] Preferably, a fixing protrusion is welded to the inner surface of the valve cover, a semi-elliptical flow divider is welded to the surface of the fixing protrusion, a uniformly distributed partition plate is welded to the outer surface of the flow divider, and the other end of the partition plate is welded to the fixing protrusion.

[0017] Compared with the prior art, the beneficial effects of this utility model are:

[0018] In this invention, the novel flap valve has a blocking design that prevents the valve cover from opening too much. When the water flow impacts the valve cover and it opens, the opened valve cover acts on the inclined push rod. The push rod pushes the push block, the squeezing block, and the slider to move. The squeezing block is resisted by the resistance plate and the resistance spring, which can prevent the valve cover from opening further and make it easier for the valve cover to close under its own weight. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the main structure of the flap valve of this utility model;

[0020] Figure 2 This is a side view of the stabilizing block of this utility model.

[0021] Figure 3 For the present utility model Figure 2 Enlarged structural diagram of section A in the middle;

[0022] Figure 4 This is a cross-sectional structural diagram of the stabilizing block of this utility model;

[0023] Figure 5 This is a three-dimensional structural diagram of the push block of this utility model;

[0024] Figure 6 This is a top view of the valve cover of this utility model.

[0025] Figure 7 This is a cross-sectional view of the valve cover of this utility model along the X-axis.

[0026] Figure 8 This is a cross-sectional view of the valve cover of this utility model along the Y-axis.

[0027] In the diagram: 1. Standard flange; 2. Valve body; 3. Hinge; 4. Valve cover; 5. Stabilizing block; 6. Push block; 7. Push rod; 11. Extension plate; 21. Inner manifold ring; 41. Fixing plate; 51. Slide rail; 52. Limiting rod; 53. Resistance spring; 54. Resistance spring plate; 61. Fixing half ring; 62. Slider; 63. Extrusion block; 91. Fixing protrusion; 92. Diverter block; 93. Separator plate. Detailed Implementation

[0028] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0029] Please see Figures 1 to 8This utility model provides a technical solution: a novel flap valve, including a flap valve assembly, comprising a standard flange 1 and a valve body 2 welded together, an extension plate 11 welded to the standard flange 1, a valve cover 4 separately connected to the valve body 2, and a hinge 3 connecting the extension plate 11 and the valve cover 4. The structure, principle, and usage of the flap valve are existing technologies and will not be described in detail in this application. A fixing plate 41 is welded to the valve cover 4, which serves to connect the push rod 7; a stabilizing block 5 is perpendicular to the extension plate 11, and the stabilizing block 5 is fixed to the extension plate 11 by bolts. Block 5 acts as a barrier against the pushing block 6. A limiting rod 52 and symmetrically distributed slide rails 51 are bolted between the opposing inner surfaces of the stabilizing block 5. The slide rails 51 and limiting rod 52 respectively limit the slider 62 and the pressing block 63, thus limiting the pushing block 6 and preventing it from tilting. A resistance spring 53 is sleeved on the outer side of the limiting rod 52. One end of the resistance spring 53 is welded to the inner surface of the stabilizing block 5. The resistance spring 53 acts as a barrier against the pressing block 63 and the pushing block 6. A resistance spring plate 54 is welded to the inner wall of the stabilizing block 5. The resistance spring plate 54 acts as a barrier against the pressing block 63 and the pushing block 6. The function of the pressure block 63 is as follows: when the pressure block 63 slides to the position between the opposing resistance spring plates 54, there is friction between the resistance spring plates 54 and the pressure block 63, and the resistance spring plates 54 block the pressure block 63, preventing the pressure block 63 from continuing to slide; the push block 6, which is in contact with the stabilizing block 5, has a slider 62 that is slidably sleeved on the outside of the slide rail 51 and a pressure block 63 that is slidably sleeved on the outside of the limiting rod 52 welded on it. A fixing half ring 61 is provided on the surface of the push block 6 away from the stabilizing block 5. The push block 6 slides along the surface of the stabilizing block 5, and the fixing half ring 61 is welded to the push block 6. The slider 62 and the squeezing block 63 on the push block 6 are limited by the corresponding slide rail 51 and the limiting rod 52 to prevent the push block 6 from tilting. The push rod 7 connects the fixed half ring 61 and the fixed plate 41. The push rod 7 connects the valve cover 4 and the push block 6. When the water flow impact is large, the valve cover 4 is impacted and opens. The opened valve cover 4 acts on the inclined push rod 7. The inclined push rod 7 pushes the push block 6 to move. The squeezing block 63 on the push block 6 is resisted by the resistance plate 54 and the resistance spring 53, which can prevent the valve cover 4 from continuing to open and facilitate the valve cover 4 to close under its own weight.

[0030] In this embodiment, the stabilizing block 5 includes a vertical part and an inclined part. The pushing block 6 is attached to the surface of the inclined part of the stabilizing block 5. The extension plate 11 is connected to the vertical part and supports the stabilizing block 5. The pushing rod 7 is in an inclined state. The inclined top end of the pushing rod 7 is connected to the fixed half ring 61. Both ends of the pushing rod 7 are circular ring structures. The fixed half ring 61 and the fixed plate 41 are respectively connected to the circular ring ends of the pushing rod 7. When the water flow impact is large, the valve cover 4 is impacted and opens. The opened valve cover 4 acts on the inclined pushing rod 7, and the inclined pushing rod 7 pushes the pushing block 6 to move.

[0031] In this embodiment, the slider 62 has a groove that cooperates with the slide rail 51. The slide rail 51 is a "T" shaped three-dimensional structure. The slide rail 51 limits the slider 62, so that the slider 62 moves along the direction of the slide rail 51.

[0032] In this embodiment, the extrusion block 63 is an isosceles trapezoidal three-dimensional structure. The resistance spring plate 54 includes a fixed part connected to the inner wall of the stabilizing block 5 and a movable part at the other end. When the extrusion block 63 moves, the extrusion block 63 is resisted by the resistance spring plate 54, which can cause the pushing block 6 to be resisted.

[0033] In this embodiment, an inner flow collecting ring 21 is welded inside the valve body 2. The inner surface of the circular inner flow collecting ring 21 is curved and gradually expands from the center a to the outer side b. The inner diameter of the inner circle of the inner flow collecting ring 21 is shortened. When water flows inside the valve body 2, the water flow impacts the center of the valve cover 4 under the guidance of the inner flow collecting ring 21, avoiding water flow impacting the gap between the valve body 2 and the valve cover 4, thereby reducing the sealing effect.

[0034] In this embodiment, a fixing protrusion 91 is welded to the inner surface of the valve cover 4, a semi-elliptical diverter block 92 is welded to the surface of the fixing protrusion 91, and a uniformly distributed partition plate 93 is welded to the outer surface of the diverter block 92. The other end of the partition plate 93 is welded to the fixing protrusion 91. The diverter block 92 and the partition plate 93 serve to guide the water flow, disperse the water flow impacting the valve cover 4, and prevent the valve cover 4 from being deformed by the impact of the water flow.

[0035] Working principle and usage process of this utility model:

[0036] When water flows inside the valve body 2, the water flow impacts the center position of the valve cover 4 under the guidance of the inner collecting ring 21, avoiding the water flow impacting the gap where the valve body 2 and the valve cover 4 are joined, thereby reducing the sealing effect;

[0037] The diverter block 92 and the partition plate 93 serve to guide the water flow, disperse the water flow impacting the valve cover 4, and prevent the valve cover 4 from being deformed by the impact of the water flow.

[0038] When the water flow impact is large, valve cover 4 will open due to the impact;

[0039] The opened valve cover 4 acts on the tilted push rod 7, and the tilted push rod 7 pushes the push block 6 to move;

[0040] The squeezing block 63 and slider 62 on the push block 6 move. The squeezing block 63 is resisted by the resistance plate 54 and the resistance spring 53, which can prevent the valve cover 4 from continuing to open and make it easier for the valve cover 4 to close under its own weight.

[0041] In summary: The flap valve has a blocking design that prevents the valve cover 4 from opening too much. When the water flow impacts the valve cover 4 and it opens, the opened valve cover 4 acts on the inclined push rod 7. The push rod 7 pushes the push block 6, the squeezing block 63, and the slider 62 to move. The squeezing block 63 is resisted by the resistance plate 54 and the resistance spring 53, which can prevent the valve cover 4 from opening further and make it easier for the valve cover 4 to close under its own weight.

[0042] Although embodiments of the present invention have been shown and described (see the detailed description above), it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A novel flap valve, characterized in that: include The flap valve assembly includes a standard flange (1) and a valve body (2) welded together, an extension plate (11) welded to the standard flange (1), a valve cover (4) separately combined with the valve body (2), and a hinge (3) connecting the extension plate (11) and the valve cover (4), on which a fixing plate (41) is welded. The vertical extension plate (11) has a stabilizing block (5). The opposing inner surfaces of the stabilizing block (5) are fixed with a limiting rod (52) and symmetrically distributed slide rails (51) by bolts. A resistance spring (53) is sleeved on the outer side of the limiting rod (52). A resistance spring plate (54) is welded on the inner sidewall of the stabilizing block (5). A push block (6) is attached to the stabilizing block (5). The push block (6) is welded with a slider (62) that is slidably sleeved on the outside of the slide rail (51) and a squeezing block (63) that is slidably sleeved on the outside of the limiting rod (52). A fixed half ring (61) is provided on the surface of the push block (6) away from the stabilizing block (5). A push rod (7) connects the fixed half ring (61) and the fixed plate (41).

2. The novel flap valve according to claim 1, characterized in that: The stabilizing block (5) includes a vertical part and an inclined part. The pushing block (6) is attached to the surface of the inclined part of the stabilizing block (5). The extension plate (11) is connected to the vertical part.

3. A novel flap valve according to claim 1, characterized in that: The push rod (7) is in an inclined state. The inclined top end of the push rod (7) is connected to the fixed half ring (61). Both ends of the push rod (7) are circular ring structures. The fixed half ring (61) and the fixed plate (41) are respectively connected to the circular ring ends of the push rod (7).

4. A novel flap valve according to claim 1, characterized in that: The slider (62) has a groove that mates with the slide rail (51), and the slide rail (51) has a "T" shaped three-dimensional structure.

5. A novel flap valve according to claim 1, characterized in that: The compression block (63) is an isosceles trapezoidal three-dimensional structure, and the resistance plate (54) includes a fixed part connected to the inner wall of the stabilizing block (5) and a movable part at the other end.

6. A novel flap valve according to claim 1, characterized in that: The valve body (2) has an inner flow collecting ring (21) welded inside. The inner surface of the circular inner flow collecting ring (21) is curved and gradually expands from the center a to the outer side b.

7. A novel flap valve according to claim 1, characterized in that: A fixing protrusion (91) is welded to the inner surface of the valve cover (4), a semi-elliptical flow divider (92) is welded to the surface of the fixing protrusion (91), and a uniformly distributed partition plate (93) is welded to the outer surface of the flow divider (92). The other end of the partition plate (93) is welded to the fixing protrusion (91).

Images