Butterfly valve convenient to install

Abstract

The utility model relates to the technical field of butterfly valves, in particular to a butterfly valve convenient to install, which comprises a valve body assembly, an adjusting assembly and a rotating shaft, the rotating shaft is movably connected with the valve body assembly in a penetrating mode and partially protrudes out of the valve body assembly, and the adjusting assembly is arranged on the valve body assembly and movably connected with the position, protruding out of the valve body assembly, of the rotating shaft. The valve body assembly comprises a first valve body internally provided with a first through hole in a penetrating mode, a second valve body internally provided with a second through hole in a penetrating mode, a valve block used for blocking the first through hole and / or the second through hole and a sealing piece, the first through hole and the second through hole are coaxially arranged, and the valve block and the sealing piece are both arranged between the first valve body and the second valve body. One part of the valve plate is located in the first through hole, the other part of the valve plate is located in the second through hole, the rotating shaft is connected with the valve plate in a penetrating mode, and the first valve body is detachably connected with the second valve body. The utility model provides a butterfly valve convenient to install, which not only can improve the installation efficiency, but also can ensure the sealing effect.

Description

TECHNICAL FIELD

[0001] The utility model relates to butterfly valve technical field more specifically, it is a kind of butterfly valve of installation convenience. BACKGROUND

[0002] The butterfly valve in prior art adopts PVC injection molding, and water sealing effect is achieved by mutual extrusion of valve seat, valve body and valve plate, the structure is not positioned when installing valve seat, and the production and processing cooperation size of three is not easy to grasp, and it is prone to excessive interference force, therefore installation efficiency is very low, and it is prone to cause low product qualification rate during installation, resulting in high installation cost, and unable to form automated production. And it is also prone to valve seat and valve body installation process due to not tight cooperation, so that valve plate is sealed when excessive interference with valve seat, valve seat moves and shifts, causing valve leakage, and valve seat is easily damaged during disassembly and assembly, greatly shorten the service life of butterfly valve. SUMMARY

[0003] The utility model aims at overcoming the problems of difficult installation of existing butterfly valve and poor sealing effect caused by installation, and provides a kind of butterfly valve of installation convenience, which can improve installation efficiency and ensure sealing effect.

[0004] To solve the above technical problems, the utility model adopts the technical scheme of:

[0005] Provide a kind of butterfly valve of installation convenience, including valve body assembly, adjusting assembly, pivot, the pivot with the valve body assembly is movably connected and part protrudes the valve body assembly setting, the adjusting assembly is installed in the valve body assembly and is movably connected with the pivot protruding the valve body assembly;The valve body assembly includes the first valve body with first through hole and the second valve body with second through hole, the valve plate for blocking the first through hole and / or the second through hole, and the sealing element, the first through hole and the second through hole are coaxially arranged, the valve plate and the sealing element are installed between the first valve body and the second valve body, part of the valve plate is located in the first through hole, another part is located in the second through hole, the pivot is connected with the valve plate, and the first valve body and the second valve body are detachably connected.

[0006] The utility model discloses a butterfly valve of the prior art is changed into the structure of separate injection molding assembly, and the butterfly valve is installed conveniently, then the sealing piece is added to seal at the position of the first valve body and the second valve body installation, and the valve seat sealing structure is cancelled simultaneously, the rotation of the pivot is driven by the adjusting assembly by the pivot and the valve piece penetration, and the valve piece can be driven to rotate, and then the opening and closing of the butterfly valve are controlled, when the butterfly valve opens, the first through -hole can be communicated with the second through -hole, and the water flow can enter the second through -hole from the first through -hole, when the butterfly valve closes, the first through -hole and the second through -hole cannot be communicated due to the block of the valve piece, and the water flow cannot pass through, and the structure has good water sealing effect and simple operation.

[0007] Further, the pivot is also penetrated with the sealing piece. The connecting position of the first valve body and the second valve body is sealed by the sealing piece, the sealing piece is integrally formed, and the pivot is penetrated with the sealing piece, so that the pivot is penetrated, and the connecting position of the pivot, the first valve body and the second valve body is well sealed.

[0008] Further, the connecting position of the sealing piece and the pivot is provided with a limiting protrusion in the circumferential direction. The limiting protrusion can enhance the interference fit between the sealing piece and the pivot, and improve the sealing between the sealing piece and the pivot.

[0009] Further, the valve piece includes a baffle and a connecting part, the baffle is located in the first through -hole or the second through -hole, the baffle is connected with the side of the connecting part, and the pivot is penetrated with the connecting part. The first through -hole of the first valve body or the second through -hole of the second valve body is sealed by the baffle, so that the butterfly valve can realize the closing function, the connecting part is driven to rotate by the pivot, so that the baffle rotates, the gap between the baffle and the first through -hole or the second through -hole is formed, and the opening of the butterfly valve is realized. The pivot is penetrated with the connecting part, the connecting part is located on the side of the baffle, and is not in the center of the baffle, so that the eccentricity of the valve piece is set, the valve piece sealing can effectively avoid the water outlet position, the installation isolation line and other poor water sealing positions, and the valve piece can be avoided due to the non -circularity and the water outlet surface, the installation isolation line and other product bad factors, so that the uneven valve piece can be avoided to cause the phenomenon of water leakage.

[0010] Further, the valve piece includes two baffles and connecting parts arranged symmetrically, the two baffles are located in the first through -hole and the second through -hole respectively, the two baffles are connected through the connecting part, and the pivot is penetrated with the connecting part. Two baffles are arranged, the first through -hole of the first valve body and the second through -hole of the second valve body are sealed respectively, so that the butterfly valve can be closed firmly under high pressure, and the water flow can not rush open the baffle; the connecting part realizes the connection of the two baffles, and the connecting part also realizes the connection with the pivot, and the two baffles are driven to open or close simultaneously by the connecting part driven by the pivot, so that the opening and closing of the butterfly valve are realized.

[0011] Furthermore, a sealant layer is provided within the connecting portion, which encapsulates the rotating shaft. The sealant layer increases the reliability of the connection between the rotating shaft and the connecting portion, and also ensures a tight seal between them.

[0012] Furthermore, a sealing ring is provided on the outer sleeve of the baffle. The sealing ring prevents gaps between the baffle and the first or second through hole, thus preventing water leakage caused by incomplete closure of the butterfly valve. Preferably, a limiting step is also provided between the first through hole and the baffle to limit the valve plate, improve installation accuracy, and prevent the valve plate from being dislodged.

[0013] Furthermore, the rotating shaft is perpendicular to both the first through hole and the second through hole, and the diameters of the first through hole and the second through hole are equal. The perpendicularity of the rotating shaft to the first and second through holes facilitates the rotation of the valve plate and improves the sealing performance when the valve plate is closed with the first and second valve bodies.

[0014] Furthermore, the adjusting assembly includes a positioning plate, a positioning gear, and a pull rod. The positioning plate is mounted on the top of the first valve body and the second valve body. The positioning gear is mounted on the rotating shaft and movably connected to the positioning plate. The pull rod can be inserted into the positioning gear. The positioning gear is mounted on the positioning plate, and the rotation of the positioning gear is limited by the insertion of the pull rod into the positioning gear. The rotation of the rotating shaft drives the positioning gear to rotate synchronously. The rotation angle of the positioning gear controls the rotation angle of the valve disc, thereby controlling the opening degree of the butterfly valve.

[0015] Furthermore, the adjustment assembly also includes a butterfly valve handle, a rotating handle, and a spring. The butterfly valve handle is detachably mounted on the positioning plate and is inserted into the rotating shaft. The butterfly valve handle has a limiting groove, the pull rod passes through the limiting groove, and the spring is installed in the limiting groove and sleeved on the pull rod. The rotating handle is rotatably connected to the end of the pull rod away from the positioning gear and is also rotatably connected to the butterfly valve handle. Mounting the butterfly valve handle on the positioning plate increases aesthetics, and the butterfly valve handle also provides installation space for the rotating handle and the spring. The spring ensures that the pull rod remains inserted into the positioning gear, thus maintaining the angle of rotation of the valve plate relative to the first or second valve body after adjustment. Rotating the rotating handle causes the pull rod to retract, generating a restoring force in the spring. Simultaneously, rotating the rotating shaft causes the positioning gear and valve plate to rotate synchronously. Once the valve plate has rotated to the appropriate position, releasing the pull rod allows it to re-engage with the positioning gear under the drive of the spring, maintaining the position of the valve plate.

[0016] Compared with the prior art, the beneficial effects of this utility model are:

[0017] (1) The valve body assembly adopts a separate injection molding assembly structure, which facilitates the installation of the product. The installation positions of the first valve body and the second valve body are sealed by the groove of the sealing element to avoid leakage caused by the compression and displacement of the gasket. The sealing element is integrally formed, which can not only achieve water sealing of the butterfly valve body, but also meet the water sealing of the rotating shaft.

[0018] (2) The valve plate is eccentrically designed so that the valve plate seal can effectively avoid poor sealing positions such as water inlet position and installation isolation line, and avoid the valve plate from leaking due to unevenness of the product caused by non-roundness, water inlet surface, installation isolation line and other product defects.

[0019] (3) The valve seat and rotating shaft rubber ring structure is eliminated, and the valve plate structure is changed. After the valve plate is injected by the injection molding machine, it does not need to be placed in the rubber mold to inject another layer of rubber sealing material. Instead, the sealing ring is directly installed on the outer sleeve of the baffle. This structure has a good water sealing effect and is easy to operate. Attached Figure Description

[0020] Figure 1 This is a first-view structural schematic diagram of a conveniently installed butterfly valve according to this utility model;

[0021] Figure 2 This is an exploded structural diagram of the adjustment component of a conveniently installed butterfly valve according to this utility model.

[0022] Figure 3 This is a structural schematic diagram of a conveniently installed butterfly valve from a second perspective according to this utility model;

[0023] Figure 4 for Figure 3 AA section view;

[0024] Figure 5 This is a third-view structural diagram of a conveniently installed butterfly valve according to this utility model;

[0025] Figure 6 for Figure 5 BB cross-sectional view;

[0026] Figure 7 This is a schematic diagram of the valve plate assembly in Embodiment 1 of this utility model;

[0027] Figure 8 This is an assembly diagram of Embodiment 2 of the present invention, which describes a convenient butterfly valve.

[0028] Figure 9 This is a schematic diagram of the valve plate assembly in Embodiment 2 of this utility model.

[0029] The markings in the diagram are explained below:

[0030] 1. Valve body assembly; 11. First valve body; 111. First through hole; 12. Second valve body; 121. Second through hole; 13. Valve plate; 131. Baffle; 132. Connecting part; 14. Seal; 141. Limiting protrusion; 15. Sealing ring; 2. Adjusting assembly; 21. Positioning plate; 22. Positioning gear; 23. Pull rod; 24. Butterfly valve handle; 241. Limiting groove; 25. Rotating handle; 26. Spring; 3. Rotating shaft. Detailed Implementation

[0031] The present invention will be further described below with reference to specific embodiments. The accompanying drawings are for illustrative purposes only, representing schematic diagrams rather than actual physical objects, and should not be construed as limiting the scope of this patent. To better illustrate the embodiments of the present invention, some components in the drawings may be omitted, enlarged, or reduced, and do not represent the actual dimensions of the product. It is understandable to those skilled in the art that some well-known structures and their descriptions may be omitted in the drawings.

[0032] In the accompanying drawings of this utility model, the same or similar reference numerals correspond to the same or similar components. In the description of this utility model, it should be understood that if terms such as "upper," "lower," "left," and "right" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, they are only for the convenience of describing this utility model 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, the terms used to describe positional relationships in the drawings are only for illustrative purposes and should not be construed as limiting this patent. For those skilled in the art, the specific meaning of the above terms can be understood according to the specific circumstances.

[0033] Example 1

[0034] like Figures 1 to 7 The first embodiment of the present invention, a convenient butterfly valve, is shown. It includes a valve body assembly 1, an adjusting assembly 2, and a rotating shaft 3. The rotating shaft 3 is movably connected to the valve body assembly 1 and partially protrudes from the valve body assembly 1. The adjusting assembly 2 is installed in the valve body assembly 1 and is movably connected to the rotating shaft 3 at the protrusion of the valve body assembly 1. The valve body assembly 1 includes a first valve body 11 with a first through hole 111 inside and a second valve body 12 with a second through hole 121 inside, a valve plate 13 for sealing the first through hole 111 and / or the second through hole 121, and a sealing element 14. The first through hole 111 and the second through hole 121 are coaxially arranged. The valve plate 13 and the sealing element 14 are both installed between the first valve body 11 and the second valve body 12. A part of the valve plate 13 is located in the first through hole 111, and the other part is located in the second through hole 121. The rotating shaft 3 is connected to the valve plate 13. The first valve body 11 and the second valve body 12 are detachably connected.

[0035] This invention replaces the existing one-piece injection-molded valve body with a separately injection-molded assembly structure, facilitating butterfly valve installation. A sealing element 14 is added at the installation positions of the first valve body 11 and the second valve body 12 for sealing, while eliminating the valve seat sealing structure. A rotating shaft 3 is connected to the valve plate 13, allowing the adjusting component 2 to drive the rotating shaft 3 and simultaneously rotate the valve plate 13, thus controlling the opening and closing of the butterfly valve. When the butterfly valve is open, the first through hole 111 connects to the second through hole 121, allowing water to flow through the first through hole 111 and into the second through hole 121. When the butterfly valve is closed, the valve plate 13 blocks the connection between the first through hole 111 and the second through hole 121, preventing water flow. This structure provides excellent water sealing and is easy to operate.

[0036] In one embodiment of this utility model, the rotating shaft 3 is also connected to the sealing element 14. The connection between the first valve body 11 and the second valve body 12 is sealed by the sealing element 14. The sealing element 14 is integrally formed, and the rotating shaft 3 is connected to the sealing element 14 to facilitate the passage of the rotating shaft 3 and to ensure a good seal at the connection between the rotating shaft 3 and the first valve body 11 and the second valve body 12.

[0037] As one embodiment of this utility model, a limiting protrusion 141 is provided circumferentially at the connection between the seal 14 and the rotating shaft 3. The setting of the limiting protrusion 141 can enhance the interference fit between the seal 14 and the rotating shaft 3 and improve the sealing performance between the seal 14 and the rotating shaft 3.

[0038] As one embodiment of this utility model, such as Figure 7 The valve plate 13 includes two symmetrically arranged baffles 131 and a connecting part 132. The two baffles 131 are located at the first through hole 111 and the second through hole 121, respectively, and are connected by the connecting part 132. The rotating shaft 3 passes through the connecting part 132. The two baffles 131 can block the first through hole 111 of the first valve body 11 and the second through hole 121 of the second valve body 12, respectively, to ensure that the butterfly valve can be firmly closed under high pressure and to prevent the water flow from blowing the baffles 131 open. The connecting part 132 connects the two baffles 131 and also connects to the rotating shaft 3. Similarly, the rotating shaft 3 drives the connecting part 132 to drive the two baffles 131 to open or close simultaneously, thereby realizing the opening and closing of the butterfly valve. The rotating shaft 3 passes through the connecting part 132. The connecting part 132 is located between the two baffles 131 and is not in the center of the baffles 131. Therefore, it is set as an eccentric setting of the valve plate 13, so that the valve plate 13 can effectively avoid poor sealing positions such as the water inlet position and the installation isolation line. This avoids the valve plate 13 from leaking due to unevenness caused by product defects such as non-roundness, water inlet surface, and installation isolation line.

[0039] In one embodiment of this utility model, a sealant layer is also provided inside the connecting part 132, which wraps around the rotating shaft 3. The sealant layer increases the reliability of the connection between the rotating shaft 3 and the connecting part 132, and also achieves a sealing performance between the rotating shaft 3 and the connecting part 132.

[0040] In one embodiment of this utility model, a sealing ring 15 is provided over the baffle 131. The sealing ring 15 prevents gaps between the baffle 131 and the first through hole 111 or the second through hole 121, thus preventing water leakage caused by incomplete closure of the butterfly valve. Preferably, a limiting step is also provided between the first through hole 111 and the baffle 131 to limit the valve plate 13, improve the accuracy of installation, and prevent the valve plate 13 from being dislodged.

[0041] In one embodiment of this utility model, the rotating shaft 3 is perpendicular to the first through hole 111 and the second through hole 121, respectively, and the diameters of the first through hole 111 and the second through hole 121 are equal. The perpendicularity of the rotating shaft 3 to the first through hole 111 and the second through hole 121 facilitates the rotation of the valve plate 13 and improves the sealing performance when the valve plate 13 is closed with the first valve body 11 and the second valve body 12.

[0042] Example 2

[0043] The following is a second embodiment of a convenient butterfly valve according to this utility model. This embodiment is similar to embodiment 1, except that, as Figure 9 As shown, the valve plate 13 includes a baffle 131 and a connecting part 132. The baffle 131 is located in the first through hole 111 or the second through hole 121. The baffle 131 is connected to the side of the connecting part 132, and the rotating shaft 3 passes through the connecting part 132.

[0044] The rotating shaft 3 passes through the connecting part 132. The connecting part 132 is located beside the baffle 131 and is not at the center of the baffle 131. Therefore, it is set to be eccentrically positioned for the valve plate 13, so that the valve plate 13 can effectively avoid poor sealing positions such as the water inlet and the installation partition line. This avoids water leakage caused by unevenness of the valve plate 13 due to product defects such as non-roundness, water inlet surface, and installation partition line. The assembly diagram of this embodiment is shown below. Figure 8 As shown.

[0045] Example 3

[0046] The following is a third embodiment of the convenient butterfly valve of this utility model. This embodiment is similar to the first embodiment, except that the adjusting component 2 includes a positioning plate 21, a positioning gear 22, and a pull rod 23. The positioning plate 21 is installed on the top of the first valve body 11 and the second valve body 12. The positioning gear 22 is installed on the rotating shaft 3 and is movably connected to the positioning plate 21. The pull rod 23 can be inserted into the positioning gear 22.

[0047] The positioning gear 22 is installed by the positioning plate 21, and the rotation limit of the positioning gear 22 is achieved by the connection between the pull rod 23 and the positioning gear 22. The rotation of the rotating shaft 3 can drive the positioning gear 22 to rotate synchronously. The rotation angle of the positioning gear 22 can control the rotation angle of the valve plate 13, thereby controlling the opening range of the butterfly valve.

[0048] As one embodiment of this utility model, the adjusting component 2 also includes a butterfly valve handle 24, a rotating handle 25, and a spring 26. The butterfly valve handle 24 is detachably covered by the positioning plate 21 and is inserted into the rotating shaft 3. The butterfly valve handle 24 is provided with a limiting groove 241. The pull rod 23 passes through the limiting groove 241. The spring 26 is installed in the limiting groove 241 and sleeved on the pull rod 23. The rotating handle 25 is rotatably connected to the end of the pull rod 23 away from the positioning gear 22 and is also rotatably connected to the butterfly valve handle 24.

[0049] Covering the butterfly valve handle 24 onto the positioning plate 21 enhances aesthetics and provides installation space for the rotating handle 25 and spring 26. The spring 26 keeps the pull rod 23 always engaged with the positioning gear 22, allowing the angle of rotation of the valve plate 13 relative to the first valve body 11 or the second valve body 12 to be maintained after adjustment. Rotating the handle 25 causes the pull rod 23 to retract, generating a restoring force in the spring 26. Simultaneously, rotating the shaft 3 causes the positioning gear 22 and valve plate 13 to rotate synchronously. Once the valve plate 13 has rotated to the appropriate position, releasing the pull rod 23 allows it to re-engage with the positioning gear 22 under the drive of the spring 26, maintaining the position of the valve plate 13.

[0050] Obviously, the above embodiments of this utility model are merely examples for clearly illustrating this utility model, and are not intended to limit the implementation of this utility model. Those skilled in the art can make other variations or modifications based on the above description. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the protection scope of the claims of this utility model.

Claims

1. A convenient butterfly valve, comprising a valve body assembly (1), an adjusting assembly (2), and a rotating shaft (3), wherein the rotating shaft (3) is movably connected to the valve body assembly (1) and partially protrudes from the valve body assembly (1), and the adjusting assembly (2) is mounted on the valve body assembly (1) and movably connected to the rotating shaft (3) at the protrusion from the valve body assembly (1); characterized in that, The valve body assembly (1) includes a first valve body (11) with a first through hole (111) inside and a second valve body (12) with a second through hole (121) inside, a valve plate (13) for sealing the first through hole (111) and / or the second through hole (121), and a sealing element (14). The first through hole (111) and the second through hole (121) are coaxially arranged. The valve plate (13) and the sealing element (14) are both installed between the first valve body (11) and the second valve body (12). A part of the valve plate (13) is located in the first through hole (111) and another part is located in the second through hole (121). The rotating shaft (3) is connected to the valve plate (13). The first valve body (11) and the second valve body (12) are detachably connected.

2. The easy-to-install butterfly valve according to claim 1, characterized in that, The rotating shaft (3) also passes through the seal (14).

3. The easy-to-install butterfly valve according to claim 2, characterized in that, The sealing element (14) is provided with a limiting protrusion (141) along the circumferential direction at the connection between it and the rotating shaft (3).

4. The easy-to-install butterfly valve according to claim 1, characterized in that, The valve plate (13) includes a baffle (131) and a connecting part (132). The baffle (131) is located in the first through hole (111) or the second through hole (121). The baffle (131) is connected to the side of the connecting part (132). The rotating shaft (3) passes through the connecting part (132).

5. The easy-to-install butterfly valve according to claim 4, characterized in that, The valve plate (13) includes two symmetrically arranged baffles (131) and a connecting part (132). The two baffles (131) are located in the first through hole (111) and the second through hole (121) respectively. The two baffles (131) are connected through the connecting part (132). The rotating shaft (3) passes through the connecting part (132).

6. The easy-to-install butterfly valve according to claim 4 or 5, characterized in that, A sealant layer is also provided in the connecting part (132), which wraps around the rotating shaft (3).

7. The easy-to-install butterfly valve according to claim 4 or 5, characterized in that, The baffle (131) is fitted with a sealing ring (15).

8. The easy-to-install butterfly valve according to claim 1, characterized in that, The rotating shaft (3) is perpendicular to the first through hole (111) and the second through hole (121) respectively, and the diameters of the first through hole (111) and the second through hole (121) are equal.

9. The easy-to-install butterfly valve according to any one of claims 1 to 8, characterized in that, The adjustment component (2) includes a positioning plate (21), a positioning gear (22), and a pull rod (23). The positioning plate (21) is installed on the top of the first valve body (11) and the second valve body (12). The positioning gear (22) is installed on the rotating shaft (3) and is movably connected to the positioning plate (21). The pull rod (23) can be inserted into the positioning gear (22).

10. The easy-to-install butterfly valve according to claim 9, characterized in that, The adjustment assembly (2) also includes a butterfly valve handle (24), a rotating handle (25), and a spring (26). The butterfly valve handle (24) is detachably covered by the positioning plate (21) and is inserted into the rotating shaft (3). The butterfly valve handle (24) is provided with a limiting groove (241). The pull rod (23) passes through the limiting groove (241). The spring (26) is installed in the limiting groove (241) and sleeved on the pull rod (23). The rotating handle (25) is rotatably connected to the end of the pull rod (23) away from the positioning gear (22) and is also rotatably connected to the butterfly valve handle (24).

Images