Butt-clamping single-clack swing check valve

Abstract

The utility model discloses a butt-clamping single-clack swing check valve which comprises a valve body, a valve hole is axially formed in the valve body, and a valve plate mounting groove is formed in the upper end of the valve hole; the valve clack is installed on one axial side of the valve hole, a connecting part embedded into the valve plate installation groove is arranged at the upper end of the valve clack, and a crescent-shaped blocking piece for sealing the valve plate installation groove is arranged on one side, where the valve clack is installed, of the valve body; the sealing rings are installed on the two axial sides of the valve body, the center of the valve hole and the center of the valve body are eccentrically arranged, the valve hole is eccentrically arranged, the drift diameter of the valve body can be enlarged, and a valve clack can be enlarged. In the limited space of the upper half part of the valve body after the valve hole is enlarged and the whole valve hole moves upwards, the crescent-shaped blocking piece effectively seals the grooves in the two ends of the rotating groove of the valve clack rotating shaft, reliable connection of the valve clack and the valve body is guaranteed, and meanwhile the surface of the valve body is smoother after the valve is assembled, the integrity of the valve is better, and the appearance is more attractive.

Description

Technical Field

[0001] The utility model relates to the technical field of water supply and drainage fittings, in particular to a wafer type single - flap swing check valve. Background Art

[0002] In the technical field of water supply and drainage, regarding the short - series wafer type single - flap swing check valve, the existing valves of this type are limited by the connection form between the valve flap and the valve body, the requirements for the space behind the valve during valve flap opening, and the requirements for the sealing surface width. As a result, the valve diameter size is small. For some specifications of valves, the valve diameter is only about 50% of the pipe diameter. This causes a sudden reduction and sudden expansion of the flow passage when the valve is installed in the pipeline, resulting in a large flow - through loss of the valve. When selecting a water pump, in order to overcome more pipeline losses, the water pump head is increased, resulting in an increase in energy consumption and cost, which is not conducive to energy conservation and cost reduction. Summary of the Utility Model

[0003] The utility model provides a wafer type single - flap swing check valve, which can solve the problems of small valve diameter size and large flow - through loss of the existing short - series wafer type single - flap swing check valve.

[0004] To achieve the above object, the utility model provides the following technical solution: A wafer type single - flap swing check valve, comprising a valve body, on which a valve hole is axially arranged, and a valve plate installation groove is arranged at the upper end of the valve hole; a valve flap, installed on one axial side of the valve hole, and a connecting part that is embedded into the valve plate installation groove is arranged at the upper end of the valve flap. On one side of the valve body where the valve flap is installed, a crescent - shaped baffle that closes the valve plate installation groove is arranged; a sealing ring, installed on both axial sides of the valve body. The center of the valve hole is eccentrically arranged with respect to the center of the valve body. The eccentric arrangement of the valve hole can increase the valve body diameter and the valve flap. In the limited space in the upper half of the valve body after the valve hole is increased and the whole valve hole is moved upward, the crescent - shaped baffle effectively closes the two ends of the groove of the valve flap rotating shaft, ensuring a reliable connection between the valve flap and the valve body. At the same time, the surface of the valve body is flatter after valve assembly, the integrity of the valve is better, and the appearance is more beautiful.

[0005] Preferably, a lifting ring is radially installed at the top of the valve body, which is convenient for the installation, disassembly and positioning of the valve in the pipeline.

[0006] Preferably, both ends of the crescent - shaped baffle are connected to the valve body by screws, which is simple to install and will not affect the rotation of the connecting part.

[0007] Preferably, chamfering parts are arranged at the front and rear edges of the valve hole of the valve body, further increasing the flow - through diameter of the valve and improving the flow channel performance.

[0008] Compared with the prior art, the beneficial effects of the utility model are:

[0009] Simple in structure, the valve hole is eccentrically arranged, which can increase the valve body diameter and the valve disc. The valve body diameter can be increased to 80% or more of the pipe diameter, and the improvement effect is obvious. The crescent-shaped baffle is adopted, which has better integrity and smaller installation space. In the limited space in the upper half of the valve body after the valve hole is increased and the whole valve hole is moved upward, the crescent-shaped baffle effectively seals the grooves at both ends of the rotation groove of the valve disc shaft, ensuring the reliable connection between the valve disc and the valve body, making the valve body surface smoother after valve assembly, improving the integrity of the valve, and making the appearance more beautiful. Brief Description of the Drawings

[0010] Figure 1 is the front view structure diagram of the present invention;

[0011] Figure 2 is the side view sectional structure diagram of the present invention;

[0012] Figure 3 is the schematic diagram of the use state of the present invention;

[0013] Figure 4 is the partial front view structure diagram of the present invention;

[0014] Figure 5 is the sectional structure diagram of the valve body of the present invention;

[0015] Figure 6 is the structure diagram of the crescent-shaped baffle of the present invention.

[0016] Reference Signs:

[0017] 1. Valve body, 2. Suspension ring, 3. Connection part, 4. Crescent-shaped baffle, 5. Screw, 6. Sealing ring, 7. Valve disc, 8. Valve hole, 9. Valve plate installation groove, 10. Chamfered part. Detailed Embodiment

[0018] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention.

[0019] As Figures 1-6As shown in the figure, the utility model aims to solve the problems of small diameter size and large flow loss of the existing short series of wafer single - flap swing check valves. The following technical solutions are provided: A wafer single - flap swing check valve, including a valve body 1, an axial valve hole 8 is provided on the valve body 1, and a valve plate mounting groove 9 is provided at the upper end of the valve hole 8; a valve flap 7 is installed on one axial side of the valve hole 8, and a connecting portion 3 embedded in the valve plate mounting groove 9 is provided at the upper end of the valve flap 7. A crescent - shaped retaining piece 4 that closes the valve plate mounting groove 9 is provided on one side of the valve body 1 where the valve flap 7 is installed; a sealing ring 6 is installed on both axial sides of the valve body 1. The center of the valve hole 8 is eccentrically arranged with respect to the center of the valve body 1. The eccentric arrangement of the valve hole 8 can increase the valve body diameter and the valve flap. By using the crescent - shaped retaining piece 4, the integrity is better and the installation space is smaller. In the limited space in the upper half of the valve body after the valve hole 8 is enlarged and the valve hole 8 is moved upward as a whole, the crescent - shaped retaining piece 4 effectively closes the two grooves at both ends of the valve flap rotating shaft groove, ensuring a reliable connection between the valve flap and the valve body, while making the surface of the valve body flatter, the integrity of the valve better, and the appearance more beautiful after the valve is assembled.

[0020] Specifically, the valve body 1 is a flat - shaped circle, connected to pipelines on both sides. The sealing ring 6 can achieve the seal between the valve body 1 and the pipelines on both sides. The one - way check function is realized by the valve flap 7 that can only be flipped open to one side. The valve plate mounting groove 9 is arranged inside the valve body 1, and the valve flap 7 rotates in the valve plate mounting groove 9 through the connecting portion 3 and a rotating shaft to realize the one - way flipping of the valve flap 7. When in use, the check valve is installed in the pipeline. The valve - rear connection uses a specially made flange with an enlarged inner hole and a concentric reducing pipe, providing sufficient space for the valve - rear valve flap to open and not affecting the specification dimensions of other pipe fittings behind the valve.

[0021] In this embodiment, a lifting ring 2 is installed along the radial direction at the top of the valve body 1, which is convenient for the installation, disassembly and positioning of the valve in the pipeline. The lifting ring 2 can be a customized multi - functional detachable lifting ring. In addition to being convenient for the installation, disassembly and positioning of the valve in the pipeline, the ergonomic size design makes the overall coordination of the valve better.

[0022] In this embodiment, both ends of the crescent - shaped retaining piece 4 are connected to the valve body 1 by screws 5. The installation is simple and does not affect the rotation of the connecting portion 3. An avoidance groove can be provided at the lower part of the crescent - shaped retaining piece 4, and the existence of the avoidance groove does not affect the flexible rotation of the valve flap 7 and the rotating shaft.

[0023] In this embodiment, chamfered portions 10 are provided at both front and rear edges of the valve hole 8 of the valve body 1, further increasing the flow - through diameter of the valve and improving the flow - channel performance.

[0024] It should be noted that all the directional indications (such as up, down, left, right, front, back...) in the embodiments of the present utility model are only used to explain the relative positional relationship, movement conditions, etc. between components in a specific posture (as shown in the attached drawings). If the specific posture changes, the directional indications will also change accordingly.

[0025] In addition, in the present utility model, descriptions such as "first" and "second" are only for descriptive purposes and should not be construed as indicating or implying their relative importance or implicitly specifying the quantity of the indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include at least one such feature. In the description of the present utility model, the meaning of "a plurality" is at least two, such as two, three, etc., unless otherwise specifically and clearly defined.

[0026] In the present utility model, unless otherwise clearly specified and limited, terms such as "connection" and "fixation" should be understood in a broad sense. For example, "fixation" can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the internal communication of two elements or the interaction relationship between two elements, unless otherwise clearly limited. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0027] In addition, the technical solutions between various embodiments of the present utility model can be combined with each other, but it must be based on the ability of those of ordinary skill in the art to implement. When the combination of technical solutions results in contradictions or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the protection scope required by the present utility model.

Claims

1. Swing check valve with wafer type and single disc, characterized in that, Comprising: A valve body (1), on which a valve hole (8) is axially provided, and a valve plate mounting groove (9) is provided at the upper end of the valve hole (8); A valve flap (7), mounted on one axial side of the valve hole (8), a connecting portion (3) that is embedded in the valve plate mounting groove (9) is provided at the upper end of the valve flap (7), and a crescent-shaped retaining piece (4) that closes the valve plate mounting groove (9) is provided on the side of the valve body (1) where the valve flap (7) is mounted; Sealing rings (6), mounted on both axial sides of the valve body (1); An eccentric setting is provided between the center of the valve hole (8) and the center of the valve body (1).

2. The wafer single - flap swing - check valve according to claim 1, characterized in that: A lifting ring (2) is radially mounted on the top of the valve body (1).

3. The wafer single - flap swing check valve according to claim 1, characterized in that: Both ends of the crescent-shaped retaining piece (4) are connected to the valve body (1) by screws (5).

4. The wafer single - flap swing check valve according to claim 1, characterized in that: Chamfered portions (10) are provided at the front and rear edges of the valve hole (8) of the valve body (1).

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