Hollow butterfly valve body

Abstract

The utility model discloses a hollow butterfly valve body, the utility model discloses a valve body, the valve body includes main body, the installation port of integral setting in the top of main body, the valve cover of assembling in the installation port, the handle of wearing in the intermediate position of valve cover, the valve plate of through the axle and handle adaptation, the installation ring of extension setting in the port place of main body, the step ring of equidistance continuous setting in the inner wall of installation ring, set up the thread connection ring of installation ring outer ring, and the sealing groove of setting up in the end face place of thread connection ring, the utility model discloses the step ring of equidistance continuous setting in the inner wall of installation ring constitutes multistage flow passage transition structure, when liquid medium flows in or flows out, can realize the gentle change of flow velocity through the gradual expansion or the reduction of diameter, effectively reduces fluid impact, inhibits turbulence and water hammer phenomenon, reduces energy loss, prolongs the service life of pipeline system and valve itself, improves the fluid dynamics performance simultaneously, promotes system operation stability.

Description

Technical Field

[0001] This utility model relates to the field of valve technology, specifically to a hollow butterfly valve body. Background Technology

[0002] In industrial fluid control systems, butterfly valves are widely used in water treatment, HVAC, petrochemical, water supply and drainage, food and medicine and other fields due to their advantages such as simple structure, small size, light weight, rapid opening and closing and convenient operation. They are used to realize the on-off control or flow regulation of the medium in the pipeline.

[0003] However, with the increasing demands on valve performance in industrial systems, traditional butterfly valves have revealed numerous technical deficiencies in practical applications, particularly in terms of sealing reliability, connection stability, structural strength, and fluid dynamics performance. Firstly, regarding connection methods, most existing small and medium-sized butterfly valves use flange connections or wafer-type installations. While these connections are stable, they are complex to install and disassemble, and occupy a large amount of space. Threaded butterfly valves, although easy to install, typically rely solely on thread engagement for sealing, lacking an effective end-face sealing structure. This makes them prone to leakage under vibration, temperature changes, or after prolonged use, severely impacting system safety. Secondly, in terms of fluid control, the flow channel design of traditional butterfly valves is relatively simple. There is often a significant abrupt change in diameter or an uneven geometric transition between the inlet and the valve body, leading to large velocity changes and turbulence as the medium passes through the valve. This easily causes water hammer, cavitation, vibration, and noise, resulting not only in energy loss but also potential impact damage to the valve itself and upstream and downstream pipelines, especially in high-pressure or high-velocity liquid systems. In addition, insufficient structural strength of the valve body is also a common problem. Especially when subjected to internal pressure or external load, the valve body is prone to deformation, which affects the sealing performance and service life.

[0004] To address the problems existing in the above-mentioned background technology, this utility model proposes a novel hollow butterfly valve body that is structurally reasonable, reliably sealed, conveniently connected, has a slow-flow protection function, and is of high strength. Utility Model Content

[0005] The purpose of this utility model is to provide a hollow butterfly valve body to solve the problems mentioned in the background art.

[0006] To solve the above-mentioned technical problems, this utility model provides the following technical solution: a hollow butterfly valve body, comprising a valve body, the valve body comprising a main body, an installation port integrally disposed on the top of the main body, a valve cover assembled on the installation port, a handle passing through the middle position of the valve cover, a valve plate adapted to the handle via a shaft, an installation ring extending from the port of the main body, stepped rings equidistantly and continuously disposed on the inner wall of the installation ring, a threaded connecting ring disposed on the outer ring of the installation ring, and a sealing groove opened at the end face of the threaded connecting ring.

[0007] As a further improvement of this utility model: the end face of the main body is provided with connecting ear seats at equal intervals, and the end of the connecting ear seat is provided with a mounting hole.

[0008] As a further improvement of this utility model: the mounting ring, the stepped ring, and the threaded connecting ring are all coaxially arranged with the port of the main body, and the threaded connecting ring is integrally arranged on the outer ring of the mounting ring.

[0009] As a further improvement of this utility model: the lower periphery of the main body is provided with equidistant and continuous reinforcing ribs, and a plurality of the reinforcing ribs form a continuous wave structure.

[0010] As a further embodiment of this utility model: the threaded connecting ring is connected to an external connecting pipe, and a sealing ring is clamped between the threaded connecting ring and the external pipe, the sealing ring being embedded in a sealing groove.

[0011] As a further improvement of this utility model: the valve plate matches the internal channel size of the main body, and the valve plate and the main body are in a sealed fit at the contact portion.

[0012] A hollow butterfly valve body is used for flow control of liquid media and for stepped flow suppression protection. Compared with the prior art, the beneficial effects of this utility model are: 1. This utility model constructs a multi-stage flow channel transition structure by continuously and equidistantly arranged stepped rings on the inner wall of the mounting ring. When the liquid medium flows in or out, the flow velocity can be gradually changed by expanding or contracting the diameter at each stage. This effectively reduces fluid impact, suppresses turbulence and water hammer, reduces energy loss, extends the service life of the pipeline system and valves, improves fluid dynamics performance, and enhances the stability of system operation.

[0013] 2. The key structures of the valve body provided by this utility model, such as the installation port, installation ring, and threaded connection ring, are all manufactured using an integrated molding process. This reduces the weak links caused by welding, splicing, and other connection methods, improves the overall strength and sealing performance of the structure, reduces the complexity of manufacturing and assembly, and enhances the durability and consistency of the product. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall structure of an embodiment of the present utility model; Figure 2 This is a front view of the overall structure of an embodiment of the present utility model; Figure 3 This is a top view of the overall structure of an embodiment of the present utility model.

[0015] In the diagram: 100, valve body; 101, main body; 102, mounting port; 103, valve cover; 104, handle; 105, connecting lug; 106, mounting ring; 107, stepped ring; 108, threaded connecting ring; 109, sealing groove; 110, reinforcing rib; 111, valve plate; 112, shaft. Detailed Implementation

[0016] To facilitate the solution of the problem, this utility model provides a hollow butterfly valve body. The technical solutions of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of protection of this utility model. Example

[0017] like Figures 1 to 3 As shown, this embodiment provides a hollow butterfly valve body, including a valve body 100. The valve body 100 includes a main body 101, an installation port 102 integrally disposed on the top of the main body 101, a valve cover 103 assembled on the installation port 102, a handle 104 passing through the middle position of the valve cover 103, a valve plate 111 adapted to the handle 104 via a shaft 112, an installation ring 106 extending at the port of the main body 101, stepped rings 107 equidistantly and continuously disposed on the inner wall of the installation ring 106, a threaded connecting ring 108 disposed on the outer ring of the installation ring 106, and a sealing groove 109 opened at the end face of the threaded connecting ring 108.

[0018] Furthermore, the mounting ring 106, the stepped ring 107, and the threaded connecting ring 108 are all coaxially arranged with the port of the main body 101, and the threaded connecting ring 108 is integrally arranged on the outer ring of the mounting ring 106; the threaded connecting ring 108 is connected to an external connecting pipe, and a sealing ring is clamped between the threaded connecting ring 108 and the external pipe, and the sealing ring is embedded in the sealing groove 109.

[0019] In addition, the end face of the main body 101 is provided with connecting lugs 105 at equal intervals, and the end of the connecting lugs 105 is provided with mounting holes; the lower periphery of the main body 101 is provided with reinforcing ribs 110 at equal intervals and continuously, and a number of reinforcing ribs 110 form a continuous wave structure; the valve plate 111 matches the internal channel size of the main body 101, and the valve plate 111 is sealed to the contact part with the main body 101.

[0020] Working Principle: This hollow butterfly valve body is used for the flow control of liquid media and the protection of stepped flow. Its structural design fully integrates multiple engineering requirements such as fluid control, sealing reliability, convenient connection, and structural reinforcement. The overall structure uses the main body 101 as the core load-bearing component. Its top is integrally formed with an installation port 102 for assembling the valve cover 103 and positioning and sealing the drive assembly. This not only improves structural rigidity but also avoids leakage risks and stress concentration problems that may arise from welding or screwing. The valve cover 103 is assembled on the installation port 102, with a handle 104 passing through it. The handle 104 is connected to the valve plate 111 located in the internal channel of the main body 101 via a shaft 112, forming a complete opening and closing transmission system. During operation, rotating the handle 104 drives the valve plate 111 to rotate 90° within the flow channel, completing the on / off control of the media. The main body 101 extends to both ends and is provided with mounting rings 106. The inner wall of the rings is provided with stepped rings 107 at equal intervals. The stepped rings 107 form several gradual steps along the fluid entry direction, which can achieve gradual expansion or contraction of the diameter when the medium flows in or out, effectively alleviating turbulence, cavitation and water hammer caused by sudden changes in flow velocity, playing the role of step flow slowing and flow field stabilization, thereby realizing the dynamic protection function of the pipeline system. The mounting ring 106 has an integrally formed threaded connecting ring 108 on its outer ring, facilitating quick threaded connection with external pipelines and improving installation efficiency. More importantly, a sealing groove 109 is provided on the end face of the threaded connecting ring 108. During assembly, an elastic sealing ring (such as an O-ring or metal gasket) is embedded in the groove and clamped between the valve body 100 and the pipeline end face. Under the action of thread preload, a reliable end face sealing structure is formed, which overcomes the defect of traditional threaded connections that rely solely on thread engagement for sealing and are prone to leakage. This achieves a dual guarantee mechanism of "thread tightening + end face sealing," significantly improving the sealing performance and vibration resistance of the connection. At the same time, the mounting ring 106, the stepped ring 107, and the threaded connecting ring 108 are all coaxially arranged with the flow channel of the main body 101, ensuring that the medium flow direction is consistent, reducing flow deviation and resistance loss, and improving fluid dynamics performance. To further enhance structural strength, multiple reinforcing ribs 110 are equidistantly arranged on the lower periphery of the main body 101. These reinforcing ribs 110 are arranged in a continuous wave shape, which not only increases the compressive and bending resistance of the valve body 100, but also effectively disperses the stress generated by the internal pressure, preventing fatigue cracking caused by local stress concentration. It is especially suitable for working environments that are subject to high internal pressure or frequent temperature changes. In addition, the end face of the main body 101 is symmetrically provided with connecting lugs 105, which have mounting holes for auxiliary fixing to pipe supports or equipment bases, preventing loosening of the connection due to cantilever stress or vibration, and further improving the stability and safety of the overall system. The outer dimensions of the valve plate 111 are precisely matched with the internal channels of the main body 101, and it fits tightly with the valve seat sealing surface in the closed state. It is usually covered with soft sealing material or equipped with elastic sealing rings to achieve a zero-leakage or micro-leakage level sealing effect.

[0021] The specific operating steps of the hollow butterfly valve body described in this utility model are as follows: First, align the threaded connecting ring 108 of the valve body 100 with the corresponding threaded interface of the external pipe, and manually screw it in for initial connection to ensure accurate thread alignment and avoid mis-threading. Before connection, the sealing ring should be pre-embedded in the sealing groove 109 on the end face of the threaded connecting ring 108 to ensure that the sealing ring is centered and free from twisting or compression deformation. Continue to rotate the valve body 100 until the threads are fully tightened, so that the sealing ring is uniformly compressed between the valve body 100 and the pipe end face to form a reliable end face seal. If necessary, a wrench can be used to assist in tightening, but the torque should be controlled to prevent damage to the threads or sealing structure. After installation, check that the valve body is secure. Once confirmed, operation can begin: Rotate handle 104 to drive shaft 112, which in turn drives valve plate 111 to open and close within the flow channel of body 101. When handle 104 is rotated to be parallel to the pipeline axis, valve plate 111 simultaneously rotates to a position parallel to the flow channel, allowing the medium to flow smoothly. At this time, as the liquid passes through the stepped ring 107 on the inner wall of mounting ring 106, it will gradually adapt to the channel changes, achieving flow velocity buffering and flow field setting, thus providing a slow-flow protection function. When it is necessary to cut off the flow of the medium, rotate handle 104 in the opposite direction to 90°, making handle 104 perpendicular to the pipeline direction. Valve plate 111 then rotates to the closed position perpendicular to the flow channel and tightly fits against the internal sealing surface of body 101, achieving a sealing cut-off and preventing the medium from passing through. During the closing process, the sealing fit between the valve plate 111 and the valve body 100 ensures good sealing performance and prevents leakage. During system operation, the corrugated reinforcing ribs 110 on the lower periphery of the valve body 100 continuously play a structural support role, improving the overall pressure resistance and deformation resistance. After operation, the connections should be checked regularly for looseness and the seals should be inspected for integrity, especially under frequent opening and closing or high-pressure conditions, to ensure the long-term stable and safe operation of the valve. The entire operation process is simple and quick, and is suitable for the on / off control and operation and maintenance of various liquid pipeline systems.

[0022] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0023] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A hollow butterfly valve body, characterized in that: The valve body (100) includes a main body (101), an installation port (102) integrally disposed on the top of the main body (101), a valve cover (103) assembled on the installation port (102), a handle (104) passing through the middle position of the valve cover (103), a valve plate (111) adapted to the handle (104) via a shaft (112), an installation ring (106) extending at the port of the main body (101), a stepped ring (107) equidistantly and continuously disposed on the inner wall of the installation ring (106), a threaded connecting ring (108) disposed on the outer ring of the installation ring (106), and a sealing groove (109) opened at the end face of the threaded connecting ring (108).

2. The hollow butterfly valve body according to claim 1, characterized in that: The end face of the main body (101) is provided with connecting ear seats (105) at equal intervals, and the end of the connecting ear seat (105) is provided with mounting holes.

3. The hollow butterfly valve body according to claim 1, characterized in that: The mounting ring (106), the stepped ring (107), and the threaded connecting ring (108) are all coaxially arranged with the port of the main body (101), and the threaded connecting ring (108) is integrally arranged on the outer ring of the mounting ring (106).

4. The hollow butterfly valve body according to claim 1, characterized in that: The lower periphery of the main body (101) is provided with equidistant and continuous reinforcing ribs (110), and a number of the reinforcing ribs (110) form a continuous wave structure.

5. The hollow butterfly valve body according to claim 1, characterized in that: The threaded connecting ring (108) is connected to an external connecting pipe, and a sealing ring is clamped between the threaded connecting ring (108) and the external pipe, and the sealing ring is embedded in the sealing groove (109).

6. The hollow butterfly valve body according to claim 1, characterized in that: The valve plate (111) matches the internal channel size of the main body (101), and the valve plate (111) and the main body (101) are in a sealed fit at the contact portion.

7. The hollow butterfly valve body according to claim 6, characterized in that: The valve plate (111) is used for the flow control of liquid media and the protection of stepped slow flow.

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