Short-distance butt-clamping single-clack swing check valve

Abstract

The utility model discloses a short-distance 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 mounted on one axial side of the valve hole, a connecting part embedded into the valve plate mounting groove is arranged at the upper end of the valve clack, rotating shafts are arranged at the two ends of the connecting part, and a cap-shaped blocking piece for sealing the valve plate mounting groove and the rotating shafts is arranged on one side, where the valve clack is mounted, of the valve body through screws; the sealing rings are installed on the two axial sides of the valve body, the cap-shaped blocking pieces are arranged on the side portions of the valve plate installation grooves, the position of the connecting portion can be limited, more space is provided for installation of the rotating shaft, the length of the rotating shaft of the valve clack can be increased, and the installation space of the valve clack on the lower portion of the valve body is not occupied. The lengthened rotating shaft can increase the length of the valve clack rotating shaft at the two ends in the valve plate mounting groove, so that the effective assembling length among the valve body, the rotating shaft and the cap-shaped blocking piece is increased, and assembling connection is more reliable.

Description

Technical Field

[0001] The utility model relates to the technical field of water supply and drainage fittings, in particular to a short-distance clamp-on single-flap swing check valve. Background Technique

[0002] In the technical field of water supply and drainage, regarding the short-series clamp-on single-flap swing check valve, for the installation of the valve flap and the valve body of the existing valve, two countersunk screws and two enlarged circular retaining plates are mostly used to limit the two ends of the valve flap rotating shaft in the rotating groove of the valve body shaft. The installation space on the surface of the valve body is limited. To ensure the reliable limitation and flexible rotation of the valve flap rotating shaft, the size of the circular retaining plate is large. Using two split retaining plates and two countersunk screws in combination, the overall occupied space of the retaining plate and the screw is large, resulting in a reduction in the installation space of the valve flap. Moreover, at the part of the rotating groove of the valve flap rotating shaft on the valve body, the two grooves at both ends of the rotating groove of the shaft are not closed after the valve is installed, making the overall appearance of the valve part not beautiful enough. Therefore, it is necessary to improve the structure of the existing check valve. Content of the Utility Model

[0003] The utility model provides a short-distance clamp-on single-flap swing check valve, which can solve the problems of small installation space of the valve flap of the existing clamp-on single-flap swing check valve, the two grooves at both ends of the rotating groove of the shaft not being closed, and the poor integrity of the surface of the valve part.

[0004] To achieve the above object, the utility model provides the following technical solution: A short-distance clamp-on single-flap swing check valve, including a valve body, an axially arranged valve hole is provided on the valve body, and a valve plate installation groove is provided at the upper end of the valve hole; a valve flap is installed on one axial side of the valve hole, a connecting part embedded in the valve plate installation groove is provided at the upper end of the valve flap, rotating shafts are provided at both ends of the connecting part, and a cap-shaped retaining plate that closes the valve plate installation groove and the rotating shaft is provided on one side of the valve body where the valve flap is installed through screws; a sealing ring is installed on both axial sides of the valve body. By providing a cap-shaped retaining plate at the side of the valve plate installation groove, the position of the connecting part can be restricted, providing more space for the installation of the rotating shaft, increasing the length of the valve flap rotating shaft, and not occupying the valve flap installation space at the lower part of the valve body; the lengthened rotating shaft can increase the length of both ends of the valve flap rotating shaft in the valve plate installation groove, thereby increasing the effective assembly length among the valve body, the rotating shaft, and the cap-shaped retaining plate, making the assembly connection more reliable.

[0005] Preferably, the center of the valve hole does not coincide with the center of the valve body, and the valve hole is shifted upward as a whole, which can increase the aperture of the valve hole, increase the centering of the valve body diameter and the pipeline flow channel, and reduce the maximum diameter of the channel behind the valve required when the valve flap opens after the valve is installed.

[0006] Preferably, a lifting ring is installed radially along the top of the valve body, which is convenient for the installation, disassembly and positioning of the valve in the pipeline.

[0007] Preferably, the cap-shaped baffle includes a cap-shaped sheet body and extension baffles provided at the horizontal two ends of the cap-shaped sheet body. The extension baffles correspond to the positions of the rotating shafts at both ends of the connecting portion. A threaded connection hole is provided in the middle of the cap-shaped sheet body. Compared with two countersunk head screws cooperating with two enlarged circular baffles, both ends of the cap-shaped baffle can effectively limit the valve flap rotating shaft, but its installation occupies less space and can effectively seal the grooves at both ends of the rotating shaft rotating groove.

[0008] Preferably, an avoidance groove is provided at the lower part of the cap-shaped sheet body, and the existence of the avoidance groove does not affect the flexible rotation of the valve flap and the rotating shaft.

[0009] Preferably, chamfered portions are provided at the front and rear edges of the valve hole of the valve body to further increase the flow diameter of the valve and improve the flow channel performance.

[0010] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0011] The structure is simple. By providing a cap-shaped baffle at the side of the valve plate installation groove, the position of the connecting portion can be restricted, providing more space for the installation of the rotating shaft, increasing the length of the valve flap rotating shaft, and not occupying the valve flap installation space at the lower part of the valve body; lengthening the rotating shaft can increase the lengths of both ends of the valve flap rotating shaft in the valve plate installation groove, thereby increasing the effective assembly length among the valve body, the rotating shaft, and the cap-shaped baffle, making the assembly connection more reliable. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 is the front view structure diagram of the present utility model;

[0013] Figure 2 is the side view sectional structure diagram of the present utility model;

[0014] Figure 3 is the partial front view structure diagram of the present utility model;

[0015] Figure 4 is the front view structure diagram of the valve flap of the present utility model;

[0016] Figure 5 is the structure diagram of the cap-shaped baffle of the present utility model;

[0017] Reference numerals:

[0018] 1. Valve body, 2. Hoop, 3. Screw, 4. Cap-shaped baffle, 41. Threaded connection hole, 42. Cap-shaped sheet body, 43. Extension baffle, 44. Avoidance groove, 5. Connecting portion, 6. Sealing ring, 7. Valve flap, 8. Valve hole, 9. Valve plate installation groove, 10. Chamfered portion. DETAILED DESCRIPTION OF THE INVENTION

[0019] The technical solutions in the embodiments of the present utility model will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present utility model.

[0020] As Figures 1-5 shown, the present utility model aims to solve the problems of small valve flap installation space, unclosed grooves at both ends of the rotating shaft rotating groove, and insufficient integrity of the valve part surface in the existing wafer single - flap swing - check valve. The following technical solutions are provided: A short - distance 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 installation 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, a connecting part 5 embedded in the valve plate installation groove 9 is provided at the upper end of the valve flap 7, rotating shafts are provided at both ends of the connecting part 5, and a cap - shaped retaining piece 4 that closes the valve plate installation groove 9 and the rotating shaft is provided on one side of the valve body 1 where the valve flap 7 is installed through a screw 3; a sealing ring 6 is installed on both axial sides of the valve body 1. By providing a cap - shaped retaining piece 4 on the side of the valve plate installation groove 9, the position of the connecting part 5 can be restricted, providing more space for the installation of the rotating shaft, increasing the length of the valve flap rotating shaft, and not occupying the valve flap installation space at the lower part of the valve body; the lengthened rotating shaft can increase the lengths of both ends of the valve flap rotating shaft in the valve plate installation groove 9, thereby increasing the effective assembly length among the valve body, the rotating shaft, and the cap - shaped retaining piece 4, making the assembly connection more reliable.

[0021] 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 being able to flip open only to one side. The valve plate installation groove 9 is arranged inside the valve body 1, and the valve flap 7 rotates in the valve plate installation groove 9 through the connecting part 5 and the rotating shaft to realize the one - way flipping of the valve flap 7. Due to the shielding of the cap - shaped retaining piece 4, the connecting part 5 and the rotating shaft cannot be seen from the outside.

[0022] In this embodiment, as Figure 1 shown, the center of the valve hole 8 does not coincide with the center of the valve body 1, and the valve hole 8 is shifted upward as a whole, which can increase the aperture of the valve hole 8, increase the centering of the valve body diameter and the pipeline flow channel, and reduce the maximum diameter of the channel required behind the valve when the valve flap opens after the valve is installed.

[0023] To facilitate the installation and movement of the check valve, a lifting ring 2 is installed radially along 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 adopt a customized multi - functional detachable lifting ring, which is convenient for quickly removing the lifting ring after the valve is installed in the pipeline, reducing the space occupied by the lifting ring. A 25 - mm - diameter circular ring design and a lengthened handle design can be adopted to meet ergonomics, and the overall coordination of the valve is better.

[0024] In this embodiment, as Figure 5As shown, the cap-shaped baffle 4 includes a cap-shaped sheet body 42 and extension baffles 43 provided at the horizontal two ends of the cap-shaped sheet body 42. The extension baffles 43 correspond to the positions of the rotating shafts at both ends of the connecting part 5. A threaded connection hole 41 is provided in the middle of the cap-shaped sheet body 42. Compared with two countersunk head screws cooperating with two enlarged circular baffles, both ends of the cap-shaped baffle can also effectively limit the valve flap rotating shaft, but its installation occupies less space and can effectively seal the grooves at both ends of the rotating shaft groove. Among them, an avoidance groove 44 is provided at the lower part of the cap-shaped sheet body 42, and the existence of the avoidance groove 44 does not affect the flexible rotation of the valve flap 7 and the rotating shaft.

[0025] In this embodiment, as Figure 2 shown, chamfered portions 10 are provided at the front and rear edges of the valve hole 8 of the valve body 1, further increasing the valve flow diameter and improving the flow channel performance.

[0026] It should be noted that all directional indicators (such as up, down, left, right, front, back...) in the embodiments of the present invention are only used to explain the relative positional relationship and movement conditions between components in a specific posture (as shown in the drawings). If this specific posture changes, then the directional indicators will also change accordingly.

[0027] In addition, in the present invention, descriptions such as "first", "second", etc. are only for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the quantity of the indicated technical features. Thus, features defined with "first", "second" may explicitly or implicitly include at least one of such features. In the description of the present invention, the meaning of "a plurality" is at least two, such as two, three, etc., unless otherwise specifically and clearly defined.

[0028] In the present invention, unless otherwise clearly specified and limited, terms such as "connection", "fixation", etc. 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 can be the internal communication of two components or the interaction relationship between two components, unless otherwise clearly limited. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

[0029] In addition, the technical solutions between the various embodiments of the present invention 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 invention.

Claims

1. A short-distance clamp-on single-flap swing check valve, characterized in that, Comprising: A valve body (1), on which a valve hole (8) is axially arranged, and a valve plate mounting groove (9) is arranged 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 (5) that is embedded in the valve plate mounting groove (9) is arranged at the upper end of the valve flap (7), rotating shafts are arranged at both ends of the connecting portion (5), and a cap-shaped retaining piece (4) that closes the valve plate mounting groove (9) and the rotating shafts is arranged on one side of the valve body (1) where the valve flap (7) is mounted through a screw (3); A sealing ring (6), mounted on both axial sides of the valve body (1).

2. The short-distance clamp-on single-flap swing check valve according to claim 1, characterized in that: The center of the valve hole (8) does not coincide with the center of the valve body (1).

3. The short-travel butt-joint 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).

4. The short-travel butt-joint single-flap swing check valve according to claim 1, characterized in that: The cap-shaped retaining piece (4) includes a cap-shaped sheet-like main body (42) and extending retaining pieces (43) arranged at the horizontal two ends of the cap-shaped sheet-like main body (42), the extending retaining pieces (43) correspond to the positions of the rotating shafts at both ends of the connecting portion (5), and a threaded connection hole (41) is arranged in the middle of the cap-shaped sheet-like main body (42).

5. The short-travel butt-joint single-flap swing check valve according to claim 4, characterized in that: A clearance groove (44) is arranged at the lower part of the cap-shaped sheet-like main body (42).

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

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