Multifunctional butterfly valve

Abstract

The utility model relates to the technical field of butterfly valves, in particular to a multifunctional butterfly valve which comprises a butterfly valve shell, a filter shell is arranged at one end of the butterfly valve shell, the butterfly valve shell and the filter shell are integrally formed, a filter cylinder is arranged in the filter shell, an automatic cut-off mechanism is arranged at one end of the filter shell, and a valve rod is arranged at the other end of the filter cylinder. The automatic cut-off mechanism comprises a cut-off shell, a cut-off valve seat and a cut-off valve element, the cut-off shell is arranged on one side of the filter shell, the butterfly valve shell, the filter shell and the cut-off shell jointly form an integrated valve body, the cut-off valve seat is arranged at the end, away from the filter cylinder, in the cut-off shell, and the cut-off valve element is arranged on one side of the cut-off valve seat. The cut-off valve element transversely moves and is adjusted in the cut-off shell, and a cut-off sealing face is formed when the cut-off valve element is closed on one side of the cut-off valve seat.

Description

Technical Field

[0001] This utility model relates to the field of butterfly valve technology, and in particular to a multifunctional butterfly valve. Background Technology

[0002] In industrial pipeline systems, butterfly valves are widely used for media flow control due to their simple structure and rapid opening and closing. However, in media environments containing impurities (such as particles and sediments), traditional butterfly valves require an additional independent filter connected in series to achieve the impurity interception function. In conventional designs, the filter and butterfly valve are manufactured and installed separately, and the two need to be connected by a flange and its connecting parts, which increases the manufacturing cost of a flange and its connecting parts, increases the valve space size, and also increases the risk of leakage of the flange pair.

[0003] Currently, Chinese patent CN214367799U discloses a butterfly valve with a filtering function, which includes: a control mechanism, a fixing mechanism, a flow control mechanism, and a filtering mechanism. The control mechanism includes a handwheel, a gearbox is installed at the rear of the handwheel, a base is installed at the bottom of the gearbox, a fixing platform is installed at the bottom of the base, a fixing mechanism is installed at the lower part of the fixing platform, the fixing mechanism includes a fixing plate, a flow control mechanism is installed at the front of the fixing plate, the flow control mechanism includes a one-way valve connector and a one-way valve, a one-way valve is installed on the outside of the one-way valve connector, and a filtering mechanism is installed at the rear of the fixing plate. The filtering mechanism includes a filter and a filter connector, a filter is installed on the outside of the filter connector.

[0004] This butterfly valve employs a filter installed before the butterfly plate is used for control. This filters the transmitted medium, blocking large particles and preventing them from eroding the butterfly plate during media flow, thus extending its service life. However:

[0005] ① External filters are prone to leakage when connected to butterfly valves. When butterfly valves and filters are installed separately, they often need to be connected by flanges or threads. The sealing at the interface depends on gaskets or sealant. Long-term use can easily lead to an increased risk of leakage due to vibration, corrosion or pressure fluctuations.

[0006] ② External filters take up a lot of space, and the separate structure between them and the butterfly valve requires reserved space for installation and maintenance, making it difficult to adapt to the needs of compact pipeline layouts. Utility Model Content

[0007] In view of the above situation and to overcome the shortcomings of the existing technology, the purpose of this utility model is to provide a multifunctional butterfly valve. The above technical objective is achieved through the following technical solution:

[0008] A multi-functional butterfly valve, comprising:

[0009] The butterfly valve housing has a filter housing at one end, and the butterfly valve housing and the filter housing are integrally formed. The filter housing contains a filter cartridge, and one end of the filter housing is equipped with an automatic shut-off mechanism. The automatic shut-off mechanism includes a shut-off housing, a shut-off valve seat, and a shut-off valve core. The shut-off housing is located on one side of the filter housing. The butterfly valve housing, the filter housing, and the shut-off housing together form an integral valve body. The shut-off valve seat is located inside the shut-off housing at the end away from the filter cartridge. The shut-off valve core is located on one side of the shut-off valve seat and can be adjusted laterally inside the shut-off housing. When the shut-off valve core is closed on one side of the shut-off valve seat, it forms a shut-off sealing surface.

[0010] Furthermore, the interior of the butterfly valve housing and the filter housing form a Y-shaped three-way channel. The filter cartridge is disposed inside the Y-shaped three-way channel, and a filter screen is disposed on the side wall of the filter cartridge. The left side of the Y-shaped three-way channel is the medium inflow side. The filter cartridge is inclinedly disposed inside the Y-shaped three-way channel. The upper opening of the filter cartridge faces the medium inflow side, and the lower end of the filter cartridge faces the bottom of the Y-shaped three-way channel. The outer wall of the upper opening of the filter cartridge is embedded in the inner wall of the integrated valve body to form a filter-side sealing surface.

[0011] Furthermore, a valve core connecting rod is provided on the side wall of the cut-off valve core, a fixing block is provided on the outside of the valve core connecting rod, and the valve core connecting rod is slidably assembled with the fixing block inside. The upper and lower ends of the fixing block are provided with connecting shafts fixed to the inner wall of the cut-off housing. An adaptive spring is provided between the cut-off valve core and the fixing block, and the adaptive spring is provided on the outside of the valve core connecting rod.

[0012] Furthermore, a butterfly plate is provided inside the butterfly valve housing. When the butterfly plate is closed, it forms a seal inside the butterfly valve housing. The right side of the butterfly plate is the medium outflow side, and a valve stem fixed to the butterfly plate is provided on one side of the butterfly plate.

[0013] Furthermore, the valve stem is longitudinally arranged inside the butterfly valve housing, with the upper end of the valve stem extending into the upper part of the integrated valve body and the lower end of the valve stem having an integral pivot that extends into the lower part of the integrated valve body.

[0014] Furthermore, a removable filter valve cover is provided at the lower end of the integrated valve body.

[0015] In summary, this utility model has the following beneficial effects:

[0016] ① The three valve body housings—filter housing, butterfly valve housing, and shut-off housing—are integrated into one unit, eliminating the two flange pairs required for the connection between them. This reduces the connection seams of the traditional split structure, lowers the valve installation length and weight, reduces a system leakage point, and lowers the risk of leakage. This integrated design also saves the installation space of the entire butterfly valve and is suitable for compact working conditions.

[0017] ② It integrates filtration, flow regulation, and emergency shut-off, reducing the need for individual components in the pipeline system. Attached Figure Description

[0018] The accompanying drawings, which are provided to further illustrate the present invention and form part of this application, do not constitute an undue limitation of the present invention. In the drawings:

[0019] Figure 1 This is a schematic diagram of the structure of this utility model.

[0020] In the diagram, 1 is the butterfly valve housing; 101 is the butterfly plate; 102 is the valve stem; 103 is the pivot; 2 is the filter housing; 201 is the filter cartridge; 202 is the filter screen; 203 is the filter valve cover; 301 is the cut-off housing; 302 is the cut-off valve seat; 303 is the cut-off valve core; 304 is the valve core connecting rod; 305 is the fixing block; 306 is the connecting shaft; and 307 is the adaptive spring. Detailed Implementation

[0021] The foregoing and other technical contents, features and effects of this utility model are described in conjunction with the appendix below. Figure 1 As will be clearly shown in the detailed description of the embodiments, the structural contents mentioned in the following embodiments are all with reference to the accompanying drawings.

[0022] Exemplary embodiments of the present invention will now be described with reference to the accompanying drawings.

[0023] Example 1: A multifunctional butterfly valve, comprising:

[0024] The butterfly valve housing 1 has a filter housing 2 at one end. The butterfly valve housing 1 and the filter housing 2 are integrally formed. The filter housing 2 has a filter cartridge 201 inside. One end of the filter housing 2 is provided with an automatic shut-off mechanism, which includes a shut-off housing 301, a shut-off valve seat 302, and a shut-off valve core 303. The shut-off housing 301 is located on one side of the filter housing 2. The butterfly valve housing 1, the filter housing 2, and the shut-off housing 301 together form an integral valve body. In this embodiment, the three valve body housings, the filter housing 2, the butterfly valve housing 1, and the shut-off housing 301, are merged into one, eliminating the two flange pairs required for the connection between the three, reducing the connection seams of the traditional split structure, reducing the valve installation length and weight, reducing the two system leakage points, and reducing the risk of leakage. At the same time, the automatic shut-off and filtration functions are integrated into the butterfly valve, making the functions more complete.

[0025] The shut-off valve seat 302 is located inside the shut-off housing 301 at one end away from the filter cartridge 201. The shut-off valve core 303 is located on one side of the shut-off valve seat 302 and is adjusted laterally inside the shut-off housing 301. When the shut-off valve core 303 is closed on one side of the shut-off valve seat 302, it forms a shut-off sealing surface.

[0026] A valve core connecting rod 304 is provided on the side wall of the shut-off valve core 303. A fixing block 305 is provided on the outside of the valve core connecting rod 304, and the valve core connecting rod 304 and the fixing block 305 are slidably assembled inside. The upper and lower ends of the fixing block 305 are provided with connecting shafts 306 fixed to the inner wall of the shut-off housing 301. An adaptive spring 307 is provided between the shut-off valve core 303 and the fixing block 305. The adaptive spring 307 is located outside the valve core connecting rod 304. In the function of this shut-off structure, the valve core connecting rod 304 and the fixing block 305 are slidably engaged, and the spring provides pressure compensation. When the filter cartridge 201 is blocked or the system pressure is abnormal, the shut-off valve core 303 moves laterally under the action of the adaptive spring 307, closes the shut-off valve seat 302, and forms a seal. In case of emergency inside the valve, the flow of the medium can be automatically cut off to prevent backflow and leakage.

[0027] The butterfly valve housing 1 and the filter housing 2 form a Y-shaped three-way channel. The filter cartridge 201 is installed inside the Y-shaped three-way channel. A filter screen 202 is installed on the side wall of the filter cartridge 201. The left side of the Y-shaped three-way channel is the medium inflow side. The filter cartridge 201 is inclined inside the Y-shaped three-way channel. The upper opening of the filter cartridge 201 faces the medium inflow side. The Y-shaped three-way channel serves as the core path for fluid flow.

[0028] The lower end of the filter cartridge 201 faces downwards from the Y-shaped three-way channel. The outer wall of the upper opening of the filter cartridge 201 is embedded in the inner wall of the integrated valve body to form a filter-side sealing surface. The area below the Y-shaped three-way channel is the collection area for filtered impurities. The entire Y-shaped branch structure can effectively reduce turbulence. The inclined channel design can guide impurities to settle naturally to the bottom, which is convenient for subsequent cleaning. The outer wall of the upper opening of the filter cartridge 201 is embedded in the inner wall of the integrated valve body to form a filter-side seal to prevent leakage.

[0029] The butterfly valve housing 1 has a butterfly plate 101 inside. When the butterfly plate 101 is closed, it forms a seal inside the butterfly valve housing 1. The right side of the butterfly plate 101 is the medium outflow side. A valve stem 102 is fixed to the butterfly plate 101 on one side. The valve stem 102 is arranged longitudinally inside the butterfly valve housing 1. The upper end of the valve stem 102 extends into the upper end of the integrated valve body and is installed. The lower end of the valve stem 102 is provided with a pivot 103 integrated with the valve stem 102. The pivot 103 extends into the lower end of the integrated valve body and is installed. The butterfly plate 101 is linked with the valve stem 102 and the pivot 103 to control the medium flow and regulate the flow rate.

[0030] The lower end of the integrated valve body is equipped with a removable filter valve cover 203. After the filter valve cover 203 is opened, the filter cartridge 201 and filter screen 202 can be maintained. The filter cartridge 201 can be cleaned or replaced without disassembling the entire valve, thus reducing maintenance costs.

[0031] In this embodiment of the invention, the medium enters the valve body flow channel from the left side. The medium first passes through the inner cavity of the left-side cut-off housing 301, pushing open the cut-off valve core 303. The cut-off valve core 303 disengages from the cut-off valve seat 302, and the valve is in the open state on the left side. If the medium flows back from the right side, the cut-off valve core 303 relies on the pressure difference between the two sides to seal with the cut-off valve seat 302 to the left, and the valve is closed as a whole, thereby realizing unidirectional flow of the valve. The middle is a filter. When impurities pass through the filter screen 202, they are automatically intercepted and accumulate at the bottom of the filter screen 202. After accumulating to a certain extent, the filter valve cover 203 is opened, and the impurities can be cleaned periodically. Subsequently, the medium further enters the right-side butterfly valve flow channel. When the butterfly plate 101 is open, the medium flows smoothly through the valve and enters the downstream pipeline system. When the butterfly plate 101 is closed, the valve is closed. Even if there is leakage in the automatic cut-off mechanism, reliable cut-off can be achieved to prevent internal leakage of the valve.

[0032] The above description is a further detailed explanation of the present utility model in conjunction with specific embodiments, and it should not be considered that the specific implementation of the present utility model is limited to this. For those skilled in the art to which the present utility model pertains and related fields, any extensions, operation methods, and data substitutions made based on the technical solution concept of the present utility model should fall within the protection scope of the present utility model.

Claims

1. A multifunctional butterfly valve, characterized in that, include: A butterfly valve housing (1) is provided with a filter housing (2) at one end of the butterfly valve housing (1). The butterfly valve housing (1) and the filter housing (2) are integrally formed. A filter cartridge (201) is provided inside the filter housing (2). An automatic shut-off mechanism is provided at one end of the filter housing (2). The automatic shut-off mechanism includes a shut-off housing (301), a shut-off valve seat (302), and a shut-off valve core (303). The shut-off housing (301) is located on the filter housing (2). On the side, the butterfly valve housing (1), the filter housing (2), and the shut-off housing (301) together form an integral valve body. The shut-off valve seat (302) is located inside the shut-off housing (301) at one end away from the filter cartridge (201). The shut-off valve core (303) is located on one side of the shut-off valve seat (302), and the shut-off valve core (303) is adjusted laterally inside the shut-off housing (301). When the shut-off valve core (303) is closed on one side of the shut-off valve seat (302), it forms a shut-off sealing surface.

2. The multifunctional butterfly valve according to claim 1, characterized in that: The butterfly valve housing (1) and the filter housing (2) form a Y-shaped three-way channel. The filter cartridge (201) is installed inside the Y-shaped three-way channel. A filter screen (202) is installed on the side wall of the filter cartridge (201). The left side of the Y-shaped three-way channel is the medium inflow side. The filter cartridge (201) is inclined inside the Y-shaped three-way channel. The upper opening of the filter cartridge (201) faces the medium inflow side. The lower end of the filter cartridge (201) faces the bottom of the Y-shaped three-way channel. The outer wall of the upper opening of the filter cartridge (201) is embedded in the inner wall of the integrated valve body to form a filter side sealing surface.

3. A multifunctional butterfly valve according to claim 1, characterized in that: A valve core connecting rod (304) is provided on the side wall of the cut-off valve core (303). A fixing block (305) is provided on the outside of the valve core connecting rod (304), and the valve core connecting rod (304) and the fixing block (305) are slidably assembled inside. The upper and lower ends of the fixing block (305) are provided with connecting shafts (306) fixed to the inner wall of the cut-off housing (301). An adaptive spring (307) is provided between the cut-off valve core (303) and the fixing block (305), and the adaptive spring (307) is provided on the outside of the valve core connecting rod (304).

4. A multifunctional butterfly valve according to claim 3, characterized in that: The butterfly valve housing (1) is provided with a butterfly plate (101) inside. When the butterfly plate (101) is closed, it forms a seal inside the butterfly valve housing (1). The right side of the butterfly plate (101) is the medium outflow side. A valve stem (102) fixed to the butterfly plate (101) is provided on one side of the butterfly plate (101).

5. A multifunctional butterfly valve according to claim 4, characterized in that: The valve stem (102) is arranged longitudinally inside the butterfly valve housing (1). The upper end of the valve stem (102) extends into the upper end of the integrated valve body and is installed therein. The lower end of the valve stem (102) is provided with a pivot (103) integrated with the valve stem (102). The pivot (103) extends into the lower end of the integrated valve body and is installed therein.

6. A multifunctional butterfly valve according to claim 1, characterized in that: The lower end of the integrated valve body is provided with a removable filter valve cover (203).

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