Horizontal high strength check valve

Abstract

The application belongs to the technical field of valves and specifically discloses a horizontal high-strength check valve. The horizontal high-strength check valve comprises a valve body and a valve clack, two hanging structures are integrally connected to the inner wall of the upper portion of the valve body and are symmetrically arranged about the axial direction; the hanging structure comprises a boss portion and a limiting portion, the boss portion protrudes from the inner wall of the valve body; the limiting portion is connected to the outer edge of the boss portion, one end of the limiting portion is connected to the inner wall of the valve body, the other end of the limiting portion extends along the outer edge of the boss portion in a direction away from the inner wall of the valve body, and a groove is formed between the boss portion, the limiting portion and the inner wall of the valve body; the valve clack is an integral component, which comprises a baffle portion, a neck portion and a shaft portion which are sequentially connected, the neck portion extends into the space between the two hanging structures; the shaft portion comprises protruding structures which are separately arranged on the two sides of the upper end of the neck portion, and the two protruding structures are one-to-one correspondingly hung in the two grooves; and the baffle portion is sealingly matched with the valve seat opening of the valve body. The check valve disclosed by the application has high strength and long overall service life.

Description

Technical Field

[0001] This application belongs to the field of valve technology, and more specifically, relates to a horizontal high-strength check valve. Background Technology

[0002] A check valve, also called a one-way valve or non-return valve, is a type of valve that automatically prevents fluid from flowing back. Check valves allow only unidirectional flow of the medium to protect piping systems and equipment.

[0003] In related technologies, the mounting structure of traditional check valves is often obtained through machining (turning, grinding, milling, etc.). However, during long-term use of check valves, under the influence of high pressure, alternating loads, and other operating conditions, the mounting structure may experience fatigue failure. In particular, weak points in the mounting structure are prone to deformation or even breakage. These issues seriously affect the reliability of the check valve and shorten its service life, necessitating improvements. Utility Model Content

[0004] In view of the deficiencies or improvement needs of the prior art, this application provides a horizontal high-strength check valve, which aims to improve the problem of short service life of traditional check valves.

[0005] This application provides a horizontal high-strength check valve, comprising a valve body and a valve disc, wherein: Two mounting structures are integrally connected to the upper inner wall of the valve body, and the two mounting structures are symmetrically arranged about the axis. Each mounting structure includes a boss and a limiting part. The boss protrudes from the inner wall of the valve body. The limiting part is connected to the outer edge of the boss, and one end is connected to the inner wall of the valve body. The other end extends away from the inner wall of the valve body along the outer edge of the boss. The boss, the limiting part and the inner wall of the valve body form a groove. The valve disc is an integral component, which includes a baffle portion, a neck portion and a shaft portion connected in sequence. The neck portion extends between two mounting structures. The shaft portion includes protrusions on both sides of the upper end of the neck portion, and the two protrusions are mounted in two grooves in a corresponding manner. The baffle portion is sealed and adapted to the valve seat port of the valve body.

[0006] As a further preferred embodiment, the end of the limiting part connected to the inner wall of the valve body is a gradually widening section, the width of which gradually increases from the cantilever end of the boss part to the inner wall of the valve body, so as to enhance the strength of the mounting structure.

[0007] As a further preferred embodiment, the mounting structure is a forged structure integrally forged onto the valve body.

[0008] As a further preferred embodiment, a notch is formed between the two mounting structures, and the neck and the notch have a fitting gap of 0.5mm to 1mm.

[0009] As a further preferred embodiment, the neck and the baffle portion form an angle at the valve seat opening facing the valve body.

[0010] As a further preferred option, the included angle is an obtuse angle.

[0011] As a further preferred embodiment, the surface roughness of the sealing surface of the valve seat port and the surface roughness of the sealing surface of the baffle portion are both no greater than 1.6 μm.

[0012] As a further preferred embodiment, the top of the valve body is provided with an inspection port communicating with the inner cavity of the valve body, and a detachable valve cover is provided at the inspection port, the valve cover being able to open and close the inspection port.

[0013] As a further preferred embodiment, a sealing ring is provided between the valve cover and the inspection port.

[0014] As a further preferred embodiment, the valve cover is threadedly connected to the inspection port.

[0015] In summary, compared with the prior art, the technical solutions conceived in this application have the following main technical advantages: 1. In the horizontal high-strength check valve of this application, the mounting structure on the valve body is an integral forging structure. Since the mounting structure no longer needs to be machined, it can not only reduce costs, but also help improve the structural strength of the valve body and extend the overall service life of the check valve.

[0016] 2. In the horizontal high-strength check valve of this application, the limiting part in the mounting structure is elongated and integrally connected with the boss part and the inner wall of the valve body; in particular, the connection between the limiting part and the valve body is thickened and reinforced, which greatly improves the strength of the mounting structure, making it less prone to deformation and breakage, and thus helps to improve the service life of the check valve.

[0017] 3. The valve disc in this application is an integral forged part, which can effectively ensure the service life of the valve disc. In particular, by setting a certain angle between the neck and the baffle in the valve disc, the valve disc can effectively form a self-sealing effect by its own weight, thereby significantly improving the check valve's check sealing performance. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the structure of the horizontal high-strength check valve provided in the embodiments of this application; Figure 2 This is a schematic diagram of the valve body provided in the embodiment of this application; Figure 3 yes Figure 2 Enlarged view of point A in the middle; Figure 4 This is a schematic diagram of the valve disc structure provided in the embodiments of this application; Figure 5 This is a schematic diagram showing the position of the included angle in the valve disc; Figure 6 This is a schematic diagram of the valve cover provided in an embodiment of this application.

[0019] In all the accompanying drawings, the same reference numerals are used to denote the same elements or structures, wherein: 3. Valve body; 3-1. Valve seat port; 3-2. Inspection port; 3-3. Valve cover; 3-3a. Cover body; 3-3b. Cylinder body; 3-3c. Sealing plate; 3-4. Sealing ring; 4. Valve disc; 4-1. Baffle part; 4-2. Neck; 4-3. Shaft part; 4-3a. Protruding structure; 4-4. Weight reduction groove; 5. Mounting structure; 5-1. Boss part; 5-2. Limiting part; 5-2a. Width transition section; 5-3. Groove; 6. Notch. Detailed Implementation

[0020] To make the objectives, technical solutions, and advantages of this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the scope of this application.

[0021] The following is in conjunction with the appendix Figures 1-6 This application will be described in further detail.

[0022] This application discloses a horizontal high-strength check valve. (Refer to...) Figures 1-3 The horizontal high-strength check valve includes a valve body 3 and a valve disc 4. Two mounting structures 5 are integrally connected to the upper inner wall of the valve body 3, and the two mounting structures 5 are symmetrically arranged about the axial direction. Each mounting structure 5 includes a boss 5-1 and a limiting part 5-2. The boss 5-1 protrudes from the inner wall of the valve body 3; the limiting part 5-2 is connected to the outer edge of the boss 5-1, with one end connected to the inner wall of the valve body 3 and the other end extending away from the inner wall of the valve body 3 along the outer edge of the boss 5-1. 2 forms a groove 5-3 between the boss portion 5-1 and the inner wall of the valve body 3. The groove 5-3 has an upper opening and a side opening. The valve disc 4 is an integral component, which includes a baffle portion 4-1, a neck portion 4-2 and a shaft portion 4-3 connected in sequence. The neck portion 4-2 extends between the two mounting structures 5. The shaft portion 4-3 includes protrusions 4-3a respectively located on both sides of the upper end of the neck portion 4-2. The two protrusions 4-3a are mounted in the two grooves 5-3 in a one-to-one correspondence. The baffle portion 4-1 is sealed and adapted to the valve seat port 3-1 of the valve body 3.

[0023] Furthermore, in some embodiments, the mounting structure 5 is a forged structure integrally forged onto the valve body 3. Since the mounting structure 5 on the valve body 3 is integrally forged and no further machining is required, it not only reduces costs but also improves the structural strength of the valve body 3 and extends the overall lifespan of the check valve, thereby resulting in a horizontal high-strength check valve.

[0024] Furthermore, such as Figure 3 As shown, in some embodiments, the end of the limiting part 5-2 connected to the inner wall of the valve body 3 is a width-gradient section 5-2a, whose width gradually increases from the cantilever end of the boss part 5-1 towards the inner wall of the valve body 3 to enhance the strength of the mounting structure 5. For ease of understanding, Figure 3 The width direction of the limiting part 5-2 is marked by dimension B.

[0025] Furthermore, such as Figure 2 As shown, in some embodiments, a notch 6 is formed between the two mounting structures 5. This notch 6 matches the width of the neck 4-2 in the valve disc 4, with a preferred fitting clearance between 0.5mm and 1mm. This design effectively prevents the valve disc 4 from jamming and wobbling significantly during opening and closing, thus preventing the valve disc 4 from failing its check seal. For ease of understanding, Figure 4 The width of the neck is roughly indicated by the label C.

[0026] Furthermore, such as Figure 4 , Figure 5 As shown, in some embodiments, the valve disc 4 is preferably an integrally forged part, and the neck 4-2 and the baffle portion 4-1 of the valve disc 4 form an angle at the end facing the valve seat port 3-1 of the valve body 3. The valve disc 4 can make the baffle portion 4-1 fit with the valve seat port 3-1 under its own gravity to form a self-sealing.

[0027] In this design, since the neck 4-2 and the baffle 4-1 of the valve disc 4 are set at a certain angle Q, the main purpose is that when the valve disc 4 is freely hung in the groove 5-3 in the valve body 3 by the shaft 4-3, due to the existence of the angle Q, the sealing surface of the baffle 4-1 in the valve disc 4 can be sealed by gravity and fit against the sealing surface at the valve seat 3-1, thus forming a self-sealing.

[0028] The included angle between the neck 4-2 and the baffle 4-1 is an obtuse angle, preferably between 90° and 180°, and more preferably between 120° and 150°. With this design, the valve disc 4 can exert a force on the sealing surface using its own weight, increasing the sealing performance; that is, the valve disc 4 can achieve a good sealing effect with the valve seat 3-1 solely by its own weight, without relying on the pressure of the medium.

[0029] Furthermore, in some embodiments, the surface roughness of both the valve seat port 3-1 and the baffle portion 4-1 must be Ra no greater than 1.6 μm. Under this design, a better seal can be formed between the baffle portion 4-1 and the valve seat port 3-1. Generally speaking, with 1.6 μm as the reference, the smaller the roughness, the better the sealing performance. When the roughness is greater than 1.6 μm, the check valve sealing performance will decrease, and leakage problems are likely to occur.

[0030] Furthermore, in some embodiments, the outer circle of the sealing surface of the valve seat port 3-1 is smaller than the outer circle of the sealing surface of the baffle portion 4-1, so as to ensure that the baffle portion 4-1 can form a good seal on the valve seat port 3-1.

[0031] Furthermore, such as Figure 4 As shown, in some embodiments, a weight-reducing groove 4-4 is provided at the center of the sealing surface of the baffle portion 4-1, and the diameter of the weight-reducing groove 4-4 is not greater than the diameter of the valve seat port 3-1. Since burrs may be generated on the sealing surface of the baffle portion 4-1 during processing, the weight-reducing groove 4-4 can help reduce burrs and protect the cutting tools used in the processing; at the same time, it can also save materials.

[0032] Furthermore, such as Figure 1 As shown, in some embodiments, the top of the valve body 3 is provided with an inspection port 3-2 communicating with the inner cavity of the valve body 3. A removable valve cover 3-3 is provided at the inspection port 3-2, and the valve cover 3-3 can open and close the inspection port 3-2. Preferably, a sealing ring 3-4 is sandwiched between the valve cover 3-3 and the inspection port 3-2. The valve cover 3-3 and the inspection port 3-2 are threaded together.

[0033] Furthermore, such as Figure 1 , Figure 6 As shown, in some embodiments, to reduce the weight of the valve cover 3-3 and save materials, the valve cover 3-3 has a hollow shell structure, including a cover body 3-3a, a cylinder body 3-3b, and a sealing plate 3-3c for covering the opening on the groove 5-3. The outer diameter of the cover body 3-3a is larger than the outer diameter of the cylinder body 3-3b. The cover body 3-3a covers the outer end of the opening of the inspection port 3-2, and a sealing ring 3-4 is sandwiched between the cover body 3-3a and the outer end face of the inspection port 3-2. The outer circumferential surface of the cylinder body 3-3b is threaded, and the cylinder body 3-3b is threadedly connected to the inner circumferential wall of the inspection port 3-2. The sealing plate 3-3c is integrally connected to the lower part of the cylinder body 3-3b, and its lower surface is a large flat surface. The thickness of the sealing plate 3-3c is preferably 2mm to 3mm. This preferred thickness range is mainly set in combination with strength and material cost, which is beneficial to balancing structural strength and material cost.

[0034] In this design, after the valve disc 4 is installed inside the valve body 3, the valve cover 3-3 is screwed into the valve body 3, so that the sealing plate 3-3c on the valve cover 3-3 fits and seals the upper opening of the groove 5-3, thereby restricting the valve disc 4 within the groove 5-3. This ensures that the shaft part 4-3 in the valve disc 4 can rotate effectively in the groove 5-3, thereby driving the entire valve disc 4 to open and close the valve seat port 3-1. At the same time, it also prevents the valve disc 4 from detaching from the groove 5-3 and causing functional failure.

[0035] It should be understood that expressions such as "comprising" and "may include" as used in this application indicate the existence of the disclosed functions, operations, or constituent elements, and do not limit one or more additional functions, operations, and constituent elements. In this application, terms such as "comprising" and / or "having" may be interpreted as indicating a specific characteristic, number, operation, constituent element, component, or combination thereof, but should not be interpreted as excluding the existence or possibility of adding one or more other characteristics, numbers, operations, constituent elements, components, or combinations thereof.

[0036] It should be understood that the terms “center,” “upper,” “lower,” “front,” “rear,” “left,” “right,” “vertical,” “horizontal,” “inner,” “outer,” “clockwise,” “counterclockwise,” “axial,” “radial,” and “circumferential” indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0037] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.

[0038] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0039] Those skilled in the art will readily understand that the above description is merely a preferred embodiment of this application and is not intended to limit this application. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A horizontal high-strength check valve, characterized in that, Includes valve body (3) and valve disc (4), wherein: Two mounting structures (5) are integrally connected to the upper inner wall of the valve body (3), and the two mounting structures (5) are symmetrically arranged about the axis. Each mounting structure (5) includes a boss (5-1) and a limiting part (5-2). The boss (5-1) protrudes from the inner wall of the valve body (3). The limiting part (5-2) is connected to the outer edge of the boss (5-1), and one end is connected to the inner wall of the valve body (3), while the other end extends away from the inner wall of the valve body (3) along the outer edge of the boss (5-1). The boss (5-1), the limiting part (5-2), and the inner wall of the valve body (3) form a groove (5-3). The valve disc (4) is an integral component, which includes a baffle part (4-1), a neck (4-2) and a shaft part (4-3) connected in sequence. The neck (4-2) extends between two mounting structures (5). The shaft part (4-3) includes protruding structures (4-3a) on both sides of the upper end of the neck (4-2). The two protruding structures (4-3a) are mounted in two grooves (5-3) in a corresponding manner. The baffle part (4-1) is sealed and adapted to the valve seat port (3-1) of the valve body (3).

2. The horizontal high-strength check valve as described in claim 1, characterized in that, The end of the limiting part (5-2) connected to the inner wall of the valve body (3) is a width-gradient section (5-2a), whose width gradually increases from the cantilever end of the boss part (5-1) to the inner wall of the valve body (3) to enhance the strength of the mounting structure (5).

3. The horizontal high-strength check valve as described in claim 2, characterized in that, The mounting structure (5) is a forged structure integrally forged onto the valve body (3).

4. The horizontal high-strength check valve as described in claim 2, characterized in that, A notch (6) is formed between the two mounting structures (5), and the neck (4-2) and the notch (6) have a fitting gap of 0.5mm to 1mm.

5. The horizontal high-strength check valve as described in claim 1, characterized in that, The neck (4-2) and the baffle portion (4-1) form an angle at the valve seat port (3-1) facing the valve body (3).

6. The horizontal high-strength check valve as described in claim 5, characterized in that, The included angle is an obtuse angle.

7. The horizontal high-strength check valve as described in claim 1, characterized in that, The surface roughness of the sealing surface of the valve seat (3-1) and the surface roughness of the sealing surface of the baffle (4-1) are both no greater than 1.6 μm.

8. The horizontal high-strength check valve as described in any one of claims 1-7, characterized in that, The valve body (3) has an inspection port (3-2) at its top that communicates with the inner cavity of the valve body (3). A detachable valve cover (3-3) is provided at the inspection port (3-2), and the valve cover (3-3) can open and close the inspection port (3-2).

9. The horizontal high-strength check valve as described in claim 8, characterized in that, A sealing ring (3-4) is sandwiched between the valve cover (3-3) and the inspection port (3-2).

10. The horizontal high-strength check valve as described in claim 8, characterized in that, The valve cover (3-3) is threadedly connected to the inspection port (3-2).

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