valve

Abstract

The valve includes a valve body (10), a valve stem (20), a valve core (30), a driver (40), and a connecting member (50). A passage (11) is provided within the valve body (10), and a valve stem hole (12) is provided to at least partially accommodate the valve stem (20). The valve body (10) has an outlet and an inlet communicating with the outside, and the valve core (30) and the valve body (10) are hingedly connected at the inlet. The valve core (30) includes a valve core body (31) and a locking post (36) protruding from the valve core body (31) toward the outlet side. The driver (40) is detachably connected to the valve stem (20), and is fitted with the connecting member (50) to lock the valve stem (20). The rotational motion of the valve core 30 is transmitted to the valve core 30 via the connecting member 50 and converted into a rotational motion of the valve core 30 about the hinge axis so that the valve core 30 opens and closes the passage 11. The valve 100 further includes a locking device 90 inserted into the valve body 10 and fixedly connected to the valve stem 20. The connection point between the connecting member 50 and the valve core body 31 and the locking post 36 are located on either side of the center of the valve core 30. After the valve core 30 closes the passage 11, the locking device 90 is connected to the valve core 30, and the locking device 90 applies a pulling force to the locking post 36 in the direction from the inlet to the outlet. This valve maintains its sealing performance even when repeatedly opened and closed.

Description

[Technical Field]

[0001] This patent application claims priority from the following Chinese patent applications: Submission date: September 30, 2022; Application number: 2022112075357; Invention name: Valve. The entire text of the above application is incorporated herein by reference.

[0002] The present invention relates to the field of valves, and more particularly to valves. [Background technology]

[0003] Existing valves for medium-sized bulk storage containers, such as butterfly valves, use a rotating shaft located in the center of the valve core to open the valve by rotating both sides of the valve core. Because the valve core is typically located inside the valve body, the flow rate is affected by the valve core and the rotating shaft, resulting in poor sealing performance. The friction between the butterfly valve's sealing ring and the valve body results in a large valve opening and closing force. Therefore, a connecting member is typically used to connect the valve core to the driver, which drives the valve core to open and close. Meanwhile, the connecting member is connected to the valve core pin shaft, which provides insufficient locking force against the valve core. Furthermore, when the valve is opened, the flow rate is large, and the connecting member is easily deformed after repeated opening and closing, reducing the locking force against the valve core and the valve's sealing performance. Summary of the Invention

[0004] An object of the present invention is to provide a valve that can ensure sealing performance even after multiple opening and closing operations and that can extend the service life of the valve.

[0005] In order to solve the above problems, an embodiment of the present invention provides a valve valve comprising a valve body, a valve stem, a valve core, a driver, and a connecting member, wherein a passage is provided within the valve body and a valve stem hole is provided to at least partially accommodate the valve stem, the valve body has an outlet and an inlet communicating with the outside, the valve core and the valve body are hingedly connected at the inlet, and the valve core comprises a valve core body and a locking post protruding from the valve core body towards the outlet side, The driver is detachably connected to the valve stem, and when the driver is fitted with a connecting member, the rotational movement of the valve stem is transmitted to the valve core via the connecting member, and converted into a rotational movement of the valve core about a hinge axis so as to open and close the passage; The valve further includes a locking device inserted into the valve body and fixedly connected to the valve stem, and the locking device is connected to the locking post after the valve core closes the passage, and the connection point between the connecting member and the valve core body and the locking post are located on both sides of the center of the valve core, respectively; After the valve core closes the passage, the locking device is connected to the valve core and provides a valve that applies a pulling force to the locking post in a direction from the inlet toward the outlet.

[0006] In the embodiment of the present invention, compared with the prior art, when the valve is closed, not only does the connecting member exert a force on the valve core in the direction of the outlet of the valve body, but a locking device is also added that exerts a force on the valve core in the direction of the outlet of the valve body. Even if the connecting member is deformed after the valve is opened and closed multiple times, the locking device exerts a force on the valve core in the direction of the outlet of the valve body, so that the valve core and the valve body are tightly connected and the passage is closed, which does not affect the locking force of the valve core or the sealing performance of the valve.

[0007] In one embodiment, the locking device has a protrusion protruding therefrom, After the valve core closes the passage, the protrusion provides a pulling force to the locking post in a direction from the inlet toward the outlet.

[0008] In one embodiment, the protrusion protrudes toward the valve stem, and the locking post has a connecting portion connected to the valve core body and a locking hook portion connected to the connecting portion on the opposite side from the valve core body, and the locking hook portion is bent and connected to the connecting portion and extends toward the side of the locking device having the protrusion.

[0009] In one embodiment, the locking hook portion has a first side wall facing the valve core body, and the protrusion has a locking surface. After the valve core closes the passage, the locking surface moves away from the valve core body, the first side wall abuts against the locking surface, and the locking surface applies a pulling force to the first side wall in a direction from the inlet to the outlet.

[0010] In one embodiment, the protrusion has an initial side and a distal side, and after the valve core closes the passage, the first side wall approaches the distal side; A guide portion is connected to the initial side, and the guide portion protrudes outward from the side edge of the locking device.

[0011] In one embodiment, the guide portion has a guide surface connected to the locking surface, and both the locking surface and the guide surface are arc surfaces that protrude outward away from the axial direction of the locking device, and the locking surface and the guide surface are located on the same arc surface; The distances between the locking surface and the axis of the locking device are both gradually reduced from the initial side to the distal side, and the first side wall successively contacts the guide surface and the locking surface as the valve core closes the passage.

[0012] In one embodiment, the locking surface is an arcuate surface that protrudes outward away from the axis of the locking device, the protrusion having an initial side and a distal side, and the distance between the locking surface and the axis of the locking device gradually decreases in a direction from the initial side toward the distal side.

[0013] In one embodiment, the protrusion is connected to the locking device and the protrusion further comprises a stop surface; the locking device has a sidewall surface spaced apart from the locking surface, the stop surface connecting the locking surface and the sidewall surface; After the valve core closes the passage, the locking post at least partially abuts the stop surface.

[0014] In one embodiment, when the protrusion is located between the valve core body and the locking post, the protrusion applies a pulling force to the locking post in a direction from the inlet to the outlet.

[0015] In one embodiment, the locking device includes a support rod and a locking member, and both ends of the support rod are fixedly connected to the valve stem and the locking member, respectively; the protrusion is provided to protrude from the locking member, and the protrusion surrounds the outer periphery of the support rod in the axial direction; The locking post has a connecting portion connected to the valve core body and a locking hook portion connected to the connecting portion on the opposite side from the valve core body, and the locking hook portion is bent and connected to the connecting portion and extends toward the support rod of the locking member.

[0016] In one embodiment, a blind hole is provided on the side of the valve body facing the passage, and the blind hole is for accommodating a part of the locking member, and the protrusion is provided outside the blind hole.

[0017] In one embodiment, the valve stem is provided with a first mounting hole and a second mounting hole, the extension direction of the first mounting hole and the extension direction of the second mounting hole are perpendicular to each other, and at least a portion of the first mounting hole passes through the second mounting hole; the driver is provided with a first mounting post and a second mounting post, the first mounting post and the second mounting post being operably inserted into the first mounting hole; The side of the support rod facing the valve stem passes through the second mounting hole, with a portion positioned in the first mounting hole, and the portion of the support rod positioned in the first mounting hole is sandwiched between the first mounting post and the second mounting post.

[0018] In one embodiment, the angle range through which the support rod is rotated by the valve stem is 160° to 170°.

[0019] In one embodiment, when the opening between the valve core and the valve body is maximum, the outer contour area of ​​the support rod toward the valve core is minimum.

[0020] In one embodiment, the support rod has a rectangular parallelepiped structure, and the support rod has a pair of first side surfaces arranged opposite to each other and a pair of second side surfaces arranged opposite to each other, the first side surfaces and the second side surfaces are connected with a gap therebetween, and the area of ​​the first side surfaces is larger than the area of ​​the second side surfaces; When the opening between the valve core and the valve body is at its largest, the second side faces toward the valve core.

[0021] In one embodiment, the connecting line between the connecting member and the valve core body and the locking post passes through the center of the valve core; The locking post has a connecting portion connected to the valve core body and a locking hook portion connected to the connecting portion on the opposite side from the valve core body, and the locking hook portion is bent and connected to the connecting portion and extends toward the connection point between the connecting member and the valve core body.

[0022] In one embodiment, the distance from the center of the valve core body to the center of the connection point between the locking post and the valve core body is m, the distance from the center of the valve core body to the boundary of the valve core body facing the inlet is n, the connecting line from the center of the valve core body to the boundary of the valve core body facing the inlet passes through the center of the connection point between the locking post and the valve core body, and m / n is in the range of 1 / 3 to 2 / 3. [Brief explanation of the drawings]

[0023] One or more embodiments are illustratively described by corresponding drawing figures; these illustrative descriptions do not constitute limitations of the embodiments; elements in the drawings having the same reference numerals are represented as similar elements; and the drawing figures do not constitute proportional limitations unless otherwise specified.

[0024] [Figure 1] FIG. 1 is a diagram showing the explosion of a valve according to an embodiment of the present invention.

[0025] [Figure 2] FIG. 2 is a cross-sectional view of a valve according to an embodiment of the present invention.

[0026] [Figure 3] FIG. 3 is a schematic diagram showing the structure of a valve body according to one embodiment of the present invention.

[0027] [Figure 4] FIG. 4 is a schematic diagram of a driver according to an embodiment of the present invention.

[0028] [Figure 5] FIG. 5 is a schematic diagram showing the configuration of a connection member according to an embodiment of the present invention.

[0029] [Figure 6] FIG. 6 is a schematic diagram showing the configuration of a combination of a driver and a connection member according to an embodiment of the present invention.

[0030] [Figure 7] FIG. 7 is a schematic diagram showing the configuration of a combination of a valve core and a connecting member according to one embodiment of the present invention.

[0031] [Figure 8] FIG. 8 is a schematic diagram showing the structure of a valve according to one embodiment of the present invention.

[0032] [Figure 9] FIG. 9 is an exploded view of a combination of a handle, a valve stem and a locking device according to one embodiment of the present invention.

[0033] [Figure 10] FIG. 10 is a schematic diagram showing the configuration of a valve core according to one embodiment of the present invention.

[0034] [Figure 11] FIG. 11 is a schematic diagram showing the configuration of a locking member according to one embodiment of the present invention.

[0035] [Figure 12] FIG. 12 is a schematic diagram of a surface of a locking member facing the passage according to one embodiment of the present invention.

[0036] [Figure 13] FIG. 13 is a schematic diagram of the configuration of an embodiment of the present invention when the valve is closed.

[0037] [Figure 14] FIG. 14 is a cross-sectional view of a valve according to an embodiment of the present invention.

[0038] [Figure 15] FIG. 15 is a schematic diagram of a combination of a valve stem and a handle according to one embodiment of the present invention.

[0039] [Figure 16] FIG. 16 is a schematic diagram showing the configuration of a driver according to an embodiment of the present invention.

[0040] [Figure 17] FIG. 17 is a schematic diagram of the combination of the valve core, the connecting member, the valve stem, and the handle when the valve according to one embodiment of the present invention is opened to the maximum flow rate.

[0041] [Figure 18] FIG. 18 is a schematic diagram of the combination of the valve core, connecting member, valve stem, and handle when the valve according to one embodiment of the present invention is closed.

[0042] Explanation of symbols Reference numerals: 100 valve, 10 valve body, 11 passage, 12 valve stem hole, 13 blind hole, 20 valve stem, 21 first mounting hole, 22 second mounting hole, 30 valve core, 31 valve core body, 32 first hinge shaft, 33 second hinge shaft, 34 first protrusion, 35 second protrusion, 36 lock post, 361 connection portion, 362 lock hook portion, 37 first side wall, 40 driver, 41 fixed end, 411 upper arm, 412 lower arm, 413 intermediate arm, 42 guide end, 43 first mounting post, 44 second mounting post, 50 connecting member, 51 opening guide post, 52 retraction guide post, 53 body, 54 first connecting pin, 55 second connecting pin, 60 handle, 70 valve cover, 80 anti-theft lock, 90 locking device, 91 Protrusion, 911 initial side, 912 distal side, 92 locking surface, 93 guide portion, 931 guide surface, 94 stop surface, 95 side wall surface, 96 support rod, 961 first side surface, 962 second side surface, 97 locking member, a angle. DETAILED DESCRIPTION OF THE INVENTION

[0043] In order to clarify the objectives, technical solutions, and advantages of the embodiments of the present invention, the following detailed description will be given of each embodiment of the present invention in conjunction with the accompanying drawings. However, those skilled in the art will understand that many technical details are provided in each embodiment of the present invention to help readers better understand the present application. However, the technical solution claimed in the present application can be realized without these technical details and various changes and modifications based on the following embodiments.

[0044] In the following description, for the purpose of explaining each disclosed embodiment, certain specific details are set forth to provide a thorough understanding of each disclosed embodiment. However, those skilled in the art should recognize that an embodiment may be practiced without one or more of these specific details. In other instances, well-known devices, configurations, and techniques related to the present application may not be shown or described in detail to avoid unnecessarily obscuring the description of the embodiments.

[0045] Unless the context otherwise requires, throughout the specification and claims, the word "comprises" and variations thereof, such as "includes" and "having," are to be understood in their open and inclusive sense, i.e., to be interpreted as "including, but not limited to."

[0046] In order to better understand the objectives, features and advantages of the present invention, the following detailed description will be given of the embodiments of the present invention in conjunction with the drawings. It should be understood that the embodiments shown in the drawings are not intended to limit the protection scope of the present invention, but merely to describe the essential spirit of the technical solution of the present invention.

[0047] References throughout the specification to "one embodiment" or "one embodiment" mean that a particular feature, structure, or characteristic described in the embodiment is included in at least one embodiment. Thus, the appearances of "one embodiment" or "one embodiment" in various places throughout the specification do not necessarily all refer to the same embodiment. Also, particular features, structures, or characteristics may be combined in any manner in one or more embodiments.

[0048] As used in this specification and the appended claims, the singular forms "a," "an," and "said" include plural referents unless the context clearly dictates otherwise. The term "or" is generally used in its sense including "and / or" unless the context clearly dictates otherwise.

[0049] In the following description, many directional terms are used to clearly indicate the configuration and operation of the present invention, but terms such as "front," "rear," "left," "right," "outside," "inside," "outward-facing," "inward-facing," "up," and "down" should be understood as terms of convenience rather than as limiting terms.

[0050] Hereinafter, an embodiment of the present invention will be described with reference to the drawings.

[0051] An embodiment of the present invention provides a valve 100 comprising a valve body 10, a valve stem 20, a valve core 30, a driver 40, and a connecting member 50. A passage 11 is defined within the valve body 10, and a valve stem hole 12 is provided to at least partially accommodate the valve stem 20. The valve core 30 is hingedly connected to the valve body 10. The driver 40 is detachably connected to the valve stem 20 and fitted into the connecting member 50, so that rotational motion of the valve stem 20 is transmitted to the valve core 30 via the connecting member 50 and converted into motion that rotates the valve core 30 about the hinge axis, causing the valve core 30 to open and close the passage 11.

[0052] 1 and 2, the valve 100 includes a valve body 10, a handle 60, a connecting member 50, a valve core 30, a driver 40, and a valve stem 20. The valve core 30 is connected to the valve body 10 by a hinge, and the hinge is composed of a hinge shaft provided in the valve core 30 and a hinge hole provided in the valve body 10. The handle 60 is fixed to the valve stem 20, and when the handle 60 is turned, the valve stem 20 turns along the axis of the valve stem hole 12. The valve stem 20 is connected to the valve core 30 via the connecting member 50 and the driver 40. The connecting member 50 and driver 40 transmit the movement of the valve stem 20 to the valve core 30. When the handle 60 is turned, the handle 60 rotates the valve stem 20, which in turn operates the driver 40 and connecting member 50, and the movement of the connecting member 50 operates the valve core 30, thereby opening and closing the valve. A valve cover 70 is further provided on the opposite side of the valve body 10 from the valve core 30, and the valve cover 70 may further be provided with an anti-theft lock 80.

[0053] Figure 3 is a three-dimensional view of the valve body 10 of a valve 100 according to one embodiment of the present invention. The valve body 10 is a housing having a passage 11 through which a fluid can pass. On the left and right sides of the figure, an outlet and an inlet are formed that connect the container of the valve 100 to the outside. As shown in Figure 2, the direction of arrow W is the direction in which the inlet faces the outlet. A valve core 30 is provided at the inlet, and the outlet is connected to the valve cover 70. A valve stem hole 12 is formed at the top end of the valve body 10 along a vertical axis perpendicular to the horizontal axis.

[0054] The valve stem 20 is partially housed in the valve stem hole 12, and has two protrusions on the top of the valve stem 20, with pin holes arranged opposite the two protrusions. The handle 60 is fitted between the two protrusions, and two pin shafts are provided on both sides of the handle 60, and the two pin shafts are inserted into the two pin holes corresponding to each other.

[0055] FIG. 4 is a schematic diagram of the driver 40 of the valve 100. The driver 40 has a fixed end 41 connected to the valve stem 20 and a guide end 42 that fits into the connecting member 50. The guide end 42 has an extrusion profile and a retraction profile on both outer surfaces thereof, which fit into the opening guide column 51 and the retraction guide column 52 of the connecting member 50, respectively, to realize the transmission of motion, as will be described in detail later.

[0056] 4, the extrusion profile on the left side of the guide end 42 of the driver 40 is provided with an extrusion section and a restricting section that are bent sequentially away from the free end and connected together, so that when the valve 100 opens, the extrusion section engages with the opening guide post 51 to push and move the connecting member 50, thereby moving the valve core 30 and opening the passage 11. When the valve 100 finishes opening, the opening guide post 51 of the connecting member 50 disengages from the extrusion section and enters the restricting section, which is preferably a recess. When the valve 100 closes, a retraction profile engages with the opening guide post 51 and the retraction guide post 52 of the connecting member 50, and the retraction profile may be curved or flat.

[0057] The fixed end 41 of the driver 40 is generally E-shaped, and the E-shaped upper arm 411 and lower arm 412 have elasticity so that when the intermediate arm 413 of the driver 40 is inserted into the first mounting hole 21, the driver 40 will not fall out of the first mounting hole 21 unless manually removed. After being assembled to the valve stem 20, the upper arm 411 and lower arm 412 of the driver 40 always have a force that holds the valve stem 20 in place to prevent the driver 40 from falling out, and when the valve stem 20 rotates, the driver 40 rotates in sync with the valve stem 20. To remove the driver, the only force required is a force greater than the elastic force of the upper arm 411 and lower arm 412.

[0058] FIG. 5 is a schematic diagram showing a connecting member 50 of a valve 100 according to one embodiment of the present invention. As shown in FIG. 5 , the connecting member 50 has a generally U-shaped body 53, with a first connecting pin 54 and a second connecting pin 55 provided at the ends of both arms of the body 53. Furthermore, an opening guide post 51 and a retraction guide post 52 are provided on one of the arms of the connecting member 50, spaced apart from each other and extending downward from the plane of the U-shape, thereby forming a generally square-shaped structure together with the U-shaped body 53. Preferably, the connecting member 50 is formed by integrally bending an elastic material. The opening guide post 51 and the retraction guide post 52 are positioned at appropriate positions on the U-shaped body 53, and the opening guide post 51 and the retraction guide post 52 fit into the extrusion profile and the retraction profile of the driver 40, respectively, thereby realizing the opening and closing of the valve 100. 6, after assembly, the guide end 42 of the driver 40 is inserted into the mouth-shaped structure. During the opening process of the valve 100, the valve stem 20 rotates the driver 40, and then the opening guide column 51 engages with the extrusion profile to move the connecting member 50, which then rotates the valve core 30, thereby opening the valve 100. During the closing process of the valve 100, the valve stem 20 rotates the connecting member 50, and the retraction guide column 52 engages with the retraction profile to move the connecting member 50, which then rotates the valve core 30, which then closes the passage 11, thereby closing the valve 100.

[0059] As shown in Figure 7, the valve core 30 has a disk-shaped valve core body 31, with a first hinge shaft 32 and a second hinge shaft 33 integrally formed on the outer periphery of the valve core body 31. A first protrusion 34 and a second protrusion 35 are formed on the side surfaces of the first hinge shaft 32 and the second hinge shaft 33 near one end of the valve core body 31, and the first protrusion 34 and the second protrusion 35 are respectively provided with hinge holes (not shown) that receive the first connection pin 54 and the second connection pin 55 of the connecting member 50. During assembly, the valve stem 20 is partially received in the valve stem hole 12 of the valve body 10, and the driver 40 is inserted into the first mounting hole 21 of the valve stem 20. The guide end 42 of the driver 40 is inserted into the square-shaped structure of the connecting member 50 and engages with the opening guide post 51 and the retraction guide post 52. The hinge shaft of the valve core 30 is attached to the hinge hole of the valve body 10, and the connecting member 50 has a certain degree of elasticity, so that the connecting member 50 will not fall off the valve core 30 unless it is manually removed after assembly.

[0060] As shown in FIG. 8 , the valve stem 20 is partially housed in the valve stem 12 and rotatably held in the valve body 10. The first connecting pin 54 and the second connecting pin 55 of the valve core 30 are inserted into hinge holes in the valve body 10, allowing the valve core 30 to rotate about the central axis of the hinge hole. The valve stem 20 is connected to the valve core 30 via a driver 40 and a connecting member 50. Rotating the valve stem 20 moves the connecting member 50, which in turn moves the valve core 30, opening and closing the passage 11; that is, driving the valve core 30 to open and close the valve 100.

[0061] In the above-described embodiment, various modifications are possible for each component. For example, the handle 60 and the valve body 10 may be integrated, or a hinge between the valve core 30 and the valve body 10 may be realized by providing a hinge hole in the valve core 30 and a connecting pin or the like in the valve body 10. The driver 40 and the connecting member 50 may have other configurations, as long as the connecting member 50 is provided with a connecting pin that is rotatably connected to the hinge hole in the valve core 30, and the driver 40 and the connecting member 50 are respectively provided with guide structures, such as a guide profile and a guide post, that can be fitted together and operate synchronously with the valve stem 20. The guide profile may be provided on the driver 40, in which case the guide post is provided on the connecting member 50, or the guide profile may be provided on the connecting member 50, in which case the guide post is provided on the driver 40. The driver 40 may be configured as an integral part with the valve stem 20.

[0062] In the present invention, the valve 100 must include at least a valve body 10, a valve stem 20, a valve core 30, a driver 40, and a connecting part 50. The valve body 10 has an axial passage 11 for a fluid to pass through. As shown in FIGS. 1 and 3, an outlet and an inlet are formed on the left and right sides of the valve body 10, respectively, which communicate with a container and the outside. The inlet is connected to the valve core 30. The valve body 10 has a valve stem hole 12 on the top along a vertical axis perpendicular to the horizontal axis. The valve stem 20 is rotatable. The driver 40 is partially housed in the valve stem hole 12, and the valve body 10 is hingedly connected to the valve core 30. The valve body 10 is provided with a hinge axis, and a hinge hole is provided on the upper side of the valve core 30 opposite the hinge axis of the valve body 10. The driver 40 is detachably connected to the valve stem 20 by its own structure, and by fitting with the connecting member 50, the rotational movement of the valve stem 20 can be transmitted by the driver 40 to the valve core 30 via the connecting member 50, and converted into movement that rotates the valve core 30 around the hinge axis. This structure allows the valve 100 to open and close.

[0063] Specifically, the valve stem 20 and valve core 30 are connected via a connecting member 50 and a driver 40, which transmit the movement of the valve stem 20 to the valve core 30. When the valve stem 20 rotates, the valve stem 20 moves the driver 40 and connecting member 50, which in turn moves the valve core 30, thereby opening and closing the valve 100. The driver 40 has a fixed end 41 connected to the valve stem 20 and a guide end 42 that fits into the connecting member 50. The guide end 42 has extrusion and retraction profiles on its outer surface on both sides. The extrusion and retraction profiles fit into the connecting member 50 to transmit the movement. The body 53 of the connecting member 50 is generally U-shaped, with a first connecting pin 54 and a second connecting pin 55 at the ends of both arms. An opening guide post 51 and a retraction guide post 52 are provided on one of the arms of the connecting member 50, spaced apart and perpendicular to the plane on which the body 53 is located, thereby forming a "Mouth" shape together with the body 53 of the connecting member 50. The opening guide post 51 and the retraction guide post 52 fit into the extrusion profile and retraction profile of the driver 40, respectively, to open and close the valve 100. When the valve 100 is assembled, the guide end 42 of the driver 40 is inserted into the "Mouth" shape, so that during the valve opening process, the valve stem 20 rotates the driver 40, the opening guide post 51 fits into the extrusion profile to move the connecting member 50, and the connecting member 50 then transmits motion to drive the valve core 30, thereby opening the valve 100. Accordingly, during the closing process, the valve stem 20 rotates the driver 40, and the retraction guide post 52 engages with the retraction profile to drive the connecting member 50, which then transmits the motion to drive the operation of the valve core 30, thereby closing the valve 100.

[0064] With current technology, the driver 40 is connected to the valve core 30 using a connecting member 50, and the driver 40 drives the valve core 30 to open and close. However, the locking force on the valve core 30 is insufficient, and when the valve core 30 is opened, the flow rate through the valve body 10 is large. If the valve core 30 is opened and closed multiple times, the connecting member 50 is prone to deformation, and the locking force on the valve core 30 and the sealing performance for the valve are likely to decrease.

[0065] Therefore, a valve 100 provided by one embodiment of the present invention further includes a locking device 90 inserted into the valve body 10 and fixedly connected to the valve stem 20. Referring to Figure 10, the valve core 30 includes a valve core body 31 and a locking post 36 protruding from the valve core body 31 toward the valve body 10. After the valve core 30 closes the passage 11, the locking device 90 is connected to the locking post 36. The connection point between the connecting member 50 and the valve core body 31 and the connection point between the locking device 90 and the locking post 36 are located on either side of the center of the valve core 30, respectively, and the locking device 90 provides a tensile force to the locking post 36 in the inlet-to-outlet direction. The valve core 30 described above closes the passage 11, i.e., the valve 100 is closed.

[0066] By adding the locking device 90, when the valve 100 is closed, the connecting member 50 not only exerts a force on the valve core 30 in the direction of the outlet of the valve body 10, but the locking device 90 also exerts a force on the valve core 30 in the direction of the outlet of the valve body 10. Even if the connecting member 50 is deformed after the valve 100 is opened and closed multiple times, the force of the locking device 90 on the valve core 30 in the direction of the outlet of the valve body 10 means that the valve core 30 can tightly connect to the valve body 10 and close the passage 11, without affecting the locking force on the valve core 30 or the sealing performance of the valve.

[0067] As shown in Figure 11, the locking device 90 has a protrusion 91 that locks and pulls the locking post 36 after the valve core 30 closes the passage 11. That is, after the valve 100 is closed, the protrusion 91 of the locking device 90 locks and pulls the locking post 36 protruding from the valve core body 31, thereby locking and pulling the valve core body 31 into close contact with the valve body 10, closing the passage 11 of the valve body 10. Those skilled in the art can install this according to actual needs.

[0068] 9, a protrusion 91 protrudes toward the valve stem 20, and the locking post 36 has a connecting portion 361 connected to the valve core body 31 and a locking hook portion 362 connected to the connecting portion 361 on the side opposite the valve core body 31. The locking hook portion 362 is bent and connected to the connecting portion 361 and extends toward the side of the locking device 90 having the protrusion 91, i.e., the locking hook portion 362 extends downward. Note that although the protrusion 91 protrudes toward the valve stem 20 in this embodiment, a protrusion 91 may also be provided on the bottom of the locking device 90 in other embodiments. In this case, even if the locking portion of the locking post 36 is bent upward, it does not depart from the scope of the present invention and can be installed according to actual needs by those skilled in the art.

[0069] The locking hook portion 362 preferably has a first side wall 37 facing the valve core body 31, and the protrusion 91 preferably has a locking surface 92. After the valve core 30 closes the passage 11, i.e., in the state shown in FIG. 13, the locking surface 92 moves away from the valve core body 31, and the first side wall 37 abuts against the locking surface 92, applying a pulling force from the inlet to the outlet to the first side wall 37. After the valve 100 is closed, the first side wall 37 abuts against the locking surface 92, i.e., the locking hook portion 362 fits tightly against the protrusion 91 to lock it, allowing the valve core 30 to fit tightly against the valve body 10, completely closing the passage 11 of the valve body 10 and ensuring the sealing of the valve 100. This can be configured by those skilled in the art according to actual needs.

[0070] Furthermore, the protrusion 91 has an initial side 911 and a distal side 912. After the valve core 30 closes the passage 11, i.e., after the valve 100 is closed, the first side wall 37 approaches the distal side 912. A guide part 93 is connected to the initial side 911, and the guide part 93 protrudes outward from the side edge of the locking device 90. During the closing process of the valve 100, the locking hook part 362 moves along the guide part 93 from the initial side 911 of the protrusion 91 to the distal side 912 of the protrusion 91. After the valve core 30 closes the passage 11, the locking hook part 362 moves toward the distal side 912 of the protrusion 91, i.e., the locking hook part 362 approaches the distal side 912 toward the first side wall 37 of the valve core body 31. Meanwhile, the guide portion 93 is provided on the initial side 911 of the protrusion 91, and protrudes outward from the side edge of the locking device 90. This allows the guide portion 93 to hook the locking hook portion 362 in advance at a position close to the locking device 90 during the process of closing the valve 100, and serve as a guide for the movement trajectory of the locking hook portion 362. Those skilled in the art can install the guide portion 93 according to actual needs.

[0071] 11 , the locking surface 92 is an arcuate surface that protrudes outward away from the axial direction of the locking device 90, and the protrusion 91 has an initial side 911 and a terminal side 912. The distance between the locking surface 92 and the axis of the locking device 90 gradually decreases from the initial side 911 to the terminal side 912. During the process of closing the valve 100, the movement trajectory of the locking hook portion 362 gradually approaches the axis of the locking device 90 until the movement stops. Therefore, by gradually decreasing the distance between the locking surface 92 and the axis of the locking device 90 in the direction from the initial side 911 to the terminal side 912, the locking surface 92 always adheres to the first side wall 37 during the movement of the locking hook portion 362, and does not deviate from the movement trajectory for closing the valve 100. This can be configured by those skilled in the art according to actual needs.

[0072] 11, the guide portion 93 has a guide surface 931 connected to the locking surface 92. The guide surface 931 is also an arcuate surface that protrudes outward away from the axial direction of the locking device 90, and it is preferable that the locking surface 92 and the guide surface 931 are on the same arcuate surface. The distance between the guide surface 931 and the axis of the locking device 90 gradually decreases from the initial side 911 to the distal side 912. As the valve core 30 closes the passage 11, the first side wall 37 successively abuts against the guide surface 931 and the locking surface 92. During the process of closing the valve 100, the movement trajectory of the locking hook portion 362 gradually approaches the axis of the locking device 90 until it stops moving. Therefore, the distance between the locking surface 92 and the guide surface 931 and the axis of the locking device 90 gradually decreases in the direction from the initial side 911 to the terminal side 912. This ensures that the locking surface 92 and the guide surface 931 are always in close contact with the first side wall 37 during the movement of the locking hook portion 362 and do not deviate from the movement trajectory for closing the valve 100. That is, the arc on which the locking surface 92 and the guide surface 931 are located coincides with the movement trajectory of the locking hook portion 362, and the locking hook portion 362 moves in close contact with the locking surface 92 and the guide surface 931. This can be configured by those skilled in the art according to actual needs. It can be understood that in some embodiments, the arc degree of the arc on which the locking surface 92 and the guide surface 931 are located and the movement trajectory of the locking portion 362 may be partially different, and there may be a contact force between the locking surface 92 and the locking portion 362 after the valve 100 is closed, or there may be a contact force between the locking surface 92 and the locking portion 362 after the valve core has moved a portion of its stroke during the valve closing process.

[0073] 12, the protrusion 91 is connected to the locking device 90, and the protrusion 91 further includes a stop surface 94. The locking device 90 has a side wall surface 95 opposite and separated from the locking surface 92, and the stop surface 94 connects the locking surface 92 to the side wall surface 95. As shown in FIG. 13, after the valve core 30 closes the passage 11, at least a portion of the locking post 36 abuts against the stop surface 94. During the closing process of the valve 100, the locking hook portion 362 moves in the direction from the guide surface 931 and the locking surface 92 toward the stop surface 94. When the locking hook portion 362 abuts against the stop surface 94, the rotation of the valve core 30 stops and the valve 100 is closed. The stop surface 94 is provided to restrict the movement of the locking hook portion 362 after the valve 100 is closed, and can be installed by those skilled in the art according to actual needs.

[0074] Furthermore, when the protrusion 91 is located between the valve core body 31 and the locking post 36, the protrusion 91 applies a pulling force to the locking post 36 in the direction from the inlet to the outlet. That is, the protrusion 91 always locks and pulls the locking post 36 during the process of closing the valve 100. Specifically, the protrusion 91 and the locking device 90 form a groove-like structure, and the locking post 36 moves within the groove. The protrusion 91 may be installed on the top of the locking device 90, in which case the locking post 36 locks and engages with the protrusion 91 downward, or the protrusion 91 may be installed on the bottom of the locking device 90, in which case the locking post 36 locks and engages with the protrusion 91 upward. That is, after the valve 100 is closed, the protrusion 91 of the locking device 90 locks and pulls the locking post 36 protruding from the valve core body 31, locking and pulling the valve core body 31 tightly against the valve body 10 and closing the passage 11 of the valve body 10. In other embodiments, the protrusion 91 does not always lock and pull the locking post 36 during the closing process of the valve 100. Those skilled in the art can set it according to actual needs.

[0075] In addition, the protrusion 91 is fitted to the locking post 36 by interference. Therefore, the protrusion 91 can firmly lock and pull the locking post 36, that is, the valve core 30 and the valve body 10 are tightly attached to each other, ensuring the sealing performance of the valve 100.

[0076] Specifically, as shown in Figure 9, the locking device 90 includes a support rod 96 and a locking member 97, with the valve stem 20 and locking member 97 fixedly connected to both ends of the support rod 96, respectively. As shown in Figures 11 and 12, a protrusion 91 is provided on the locking member 97 and surrounds the outer periphery of the support rod 96 in the axial direction. As shown in Figure 10, the locking post 36 has a connecting portion 361 connected to the valve core body 31 and a lock hook portion 362 connected to the side of the connecting portion 361 away from the valve core body 31, and the lock hook portion 362 is bent and connected to the connecting portion 361, extending towards the locking member 97 and the support rod 96. With this arrangement, the protrusion 91 is provided on the top of the locking member 97, and the locking hook portion 362 is bent downward. Therefore, after the valve 100 is closed, the tip of the valve core 30 is subjected to a force toward the valve body 10 via the connecting member 50, and the lower portion of the valve core 30 is also subjected to a force toward the valve body 10 and pulled, thereby ensuring the sealing of the valve 100. The configuration of the locking device 90 is not limited to the configuration shown in the figure. The locking device 90 may be a rod body with a hook body provided on the outer periphery of the rod body that fits over and hooks onto the locking hook portion 362. It should be understood that the locking device 90 may be configured as an integrated part without being separated into the support rod 96 and the locking member 97, or the locking device 90 may be a portion that protrudes and extends downward from the valve stem 20, either of which is within the scope of the present invention.

[0077] 2 and 14 , a blind hole 13 is provided on the side of the valve body 10 facing the passage 11, and the blind hole 13 is for accommodating part of the locking member 97, with a protrusion 91 provided on the outside of the blind hole 13. The blind hole 13 is provided on the side of the valve body 10 facing the passage 11, i.e., an area for accommodating part of the locking member 97 can be created without affecting the sealing performance of the valve body 10. The locking hook 362 is operably positioned within the passage 11, and the protrusion 91 is provided on the outside of the blind hole 13, so that the protrusion 91 can lock and pull the locking hook 362. This structure is reasonably designed and can be installed by those skilled in the art according to actual needs. Note that the blind hole 13 may be in the form of a through hole, and a sealing ring may be provided in the part of the through hole that accommodates the locking member 97. Such an embodiment does not depart from the scope of the present invention and can be installed by those skilled in the art according to actual needs.

[0078] 15, the valve stem 20 is provided with a first mounting hole 21 and a second mounting hole 22, the first mounting hole 21 and the second mounting hole 22 extending perpendicularly, with the first mounting hole 21 at least partially penetrating the second mounting hole 22. As shown in FIG. 16, the driver 40 is provided with a first mounting post 43 and a second mounting post 44, the first mounting post 43 and the second mounting post 44 are operably inserted into the first mounting hole 21, a support rod 96 passes through the second mounting hole 22 toward the valve stem 20 and is partially positioned within the first mounting hole 21, and the portion of the support rod 96 positioned within the first mounting hole 21 is sandwiched between the first mounting post 43 and the second mounting post 44. This installation not only saves space, but also ensures that the support rod 96 is stably sandwiched between the first mounting column 43 and the second mounting column 44, ensuring stable relative movement between the driver 40 and the driver 96. When the driver 40 starts to move, the support rod 96 also moves in conjunction with it, and when the support rod 96 moves, the driver 40 also moves in conjunction with it. Those skilled in the art can install it according to actual needs.

[0079] 17 and 18, the range of angle a through which the support rod 96 is driven by the valve stem 20 to rotate is between 160° and 170°. That is, from when the flow rate of the valve 100 reaches its maximum until the valve 100 is closed, the range of angle a through which the support rod 96 is moved by the valve stem 20 to rotate is between 160° and 170°. In other words, when the valve 100 is opened from a closed state to a state of maximum flow rate, i.e., when the rotation angle a of the valve core 30 is at its maximum, the support rod 96 is moved by the valve stem 20, and the range of rotation angle a is between 160° and 170°.

[0080] Furthermore, when the opening between the valve core 30 and the valve body 10 is maximized, the outer contour area of ​​the support rod 96 facing the valve core 30 is minimized. That is, when the flow rate of this valve 100 is maximized, that is, when the valve core 30 has rotated to the maximum angle a, the outer contour area of ​​the support rod 96 facing the valve core 30 is minimized. This installation minimizes the obstruction to the passage of fluid by the support rod 96, ensuring the sealing performance of the valve 100 while ensuring the largest possible flow rate.

[0081] As shown in FIG. 9 , the support rod 96 has a rectangular parallelepiped structure and includes a pair of opposing first side surfaces 961 and a pair of opposing second side surfaces 962. The first side surfaces 961 and the second side surfaces 962 are connected with a gap between them, and the area of ​​the first side surface 961 is larger than the area of ​​the second side surface 962. When the opening between the valve core 30 and the valve body 10 is at its largest, the second side surface 962 faces the valve core 30. That is, when the flow rate of the valve 100 is at its maximum, i.e., when the valve core 30 has rotated to the maximum angle a, the second side surface 962 faces the valve core 30. This type of installation simplifies the structure and minimizes the obstruction of fluid flow caused by the support rod 96, ensuring the sealing performance of the valve 100 while ensuring the largest possible flow rate.

[0082] Furthermore, the connection line between the connection point between the connecting member 50 and the valve core body 31 and the locking part passes through the centre of the valve core 30. The locking post 36 has a connecting part 361 connected to the valve core body 31 and a locking hook part 362 connected to the side of the connecting part 361 opposite the valve core body 31, and the locking hook part 362 is bent and connected to the connecting part 361 and extends towards the connection point between the connecting member 50 and the valve core body 31. That is, because the connection point between the connecting member 50 and the valve core body 31 is located at the top of the valve core body 31 and the locking part is located at the bottom of the valve core body 31, when the valve 100 is closed, a strong force acts on both ends of the valve core body 31, sealing the valve core body 31 and the valve core body 10, ensuring maximum sealing performance of the valve core 100. As can be seen, the optimal solution is for the line connecting the connection point between the connecting member 50 and the valve core body 31 and the locking portion to pass through the center of the valve core 30, but the line connecting the connection point between the connecting member 50 and the valve body 31 and the locking portion does not have to pass through the center of the valve core 30.

[0083] 7, the distance from the center O of the valve core body 31 to the center P of the connection between the locking post 36 and the valve core body 31 is defined as m, the distance from the center O of the valve core body 31 to the boundary Q of the valve core body 31 toward the inlet side is defined as n, and the connecting line from the center O of the valve core body 31 to the boundary Q of the valve core body 31 passes through the center P of the connection between the locking post 36 and the valve core body 31, and the range of m / n is 1 / 3 to 2 / 3. That is, the center P of the connection between the locking post 36 and the valve core body 31 may be located midway, one-third, two-thirds, one-quarter, or one-fifth the distance between the boundary Q of the valve core body 31 and the center O of the valve core body 31, and the connection P between the locking post 36 and the valve core body 31 is closer to the boundary Q of the valve core body 31 and farther from the center O of the valve core body 31. The center of the connection between the locking post 36 and the valve core body 31 may be slightly eccentric, and either arrangement is within the scope of protection of the present application.

[0084] While preferred embodiments of the present invention have been described in detail above, it should be understood that aspects of the embodiments can be modified, if necessary, to provide additional embodiments using aspects, features, and concepts from various patents, applications, and publications.

[0085] These and other changes can be made to the embodiments in light of the above detailed description. In general, in the claims, the terms used should not be construed as being limited to the specific embodiments disclosed in the specification and claims, but should be understood to include all possible embodiments along with all equivalents to which these claims are entitled.

[0086] Those skilled in the art will understand that the above embodiments are specific examples for implementing the present invention, and that in actual applications, various changes in form and details are possible without departing from the spirit and scope of the present invention.

Claims

1. a valve body, a valve stem, a valve core, a driver, and a connecting member; a passage is provided within the valve body, and a valve stem hole is provided to at least partially accommodate the valve stem; the valve body has an outlet and an inlet communicating with the outside, the valve core and the valve body are hingedly connected at the inlet; and the valve core comprises a valve core body and a locking post protruding from the valve core body toward the outlet side; The driver is detachably connected to the valve stem, and when fitted with a connecting member, the rotational movement of the valve stem is transmitted to the valve core via the connecting member, and converted into a rotational movement of the valve core about a hinge axis so that the valve core opens and closes the passage. The valve further comprises a locking device inserted into the valve body and fixedly connected to the valve stem. After the valve core closes the passage, the locking device is connected to the locking post. The connection point between the connecting member and the valve core body and the locking post are located on both sides of the center of the valve core. After the valve core closes the passage, the locking device is connected to the valve core and applies a pulling force to the locking post in a direction from the inlet toward the outlet.

2. The locking device has a protruding portion, 2. The valve of claim 1, wherein the protrusion applies a pulling force to the locking post in a direction from the inlet toward the outlet after the valve core closes the passage.

3. 3. The valve according to claim 2, wherein the protrusion protrudes toward the valve stem, the locking post has a connecting portion connected to the valve core body and a lock hook portion connected to the connecting portion on the opposite side from the valve core body, and the lock hook portion is bent and connected to the connecting portion, extending toward the side having the protrusion of the locking device.

4. 4. The valve according to claim 3, wherein the locking hook portion has a first side wall facing the valve core body, and the protrusion has a locking surface, and after the valve core closes the passage, the locking surface moves away from the valve core body, the first side wall abuts against the locking surface, and the locking surface applies a pulling force to the first side wall in a direction from the inlet to the outlet.

5. the protrusion has an initial side and a distal side, and after the valve core closes the passage, the first side wall approaches the distal side; 5. The valve according to claim 4, wherein a guide portion is connected to the initial side, and the guide portion protrudes outside a side edge of the locking device.

6. the guide portion has a guide surface connected to the locking surface, the locking surface and the guide surface are both arc surfaces that protrude outward away from the axial direction of the locking device, and the locking surface and the guide surface are located on the same arc surface; 6. The valve of claim 5, wherein the distances between the locking surface and the axis of the locking device and the distances between the guide surface and the axis of the locking device are gradually reduced in a direction from the initial side to the distal side, and the first side wall successively contacts the guide surface and the locking surface as the valve core closes the passage.

7. 5. The valve of claim 4, wherein the locking surface is an arcuate surface that protrudes outward away from the axis of the locking device, the protrusion having an initial side and a distal side, and the distance between the locking surface and the axis of the locking device gradually decreases in a direction from the initial side toward the distal side.

8. the protrusion is connected to the locking device, and the protrusion further has a stop surface; the locking device has a sidewall surface spaced apart from the locking surface, the stop surface connecting the locking surface and the sidewall surface; 5. The valve of claim 4, wherein the locking post at least partially abuts the stop surface after the valve core closes the passage.

9. 3. The valve of claim 2, wherein when the protrusion is positioned between the valve core body and the locking post, the protrusion applies a pulling force to the locking post in a direction from the inlet toward the outlet.

10. 3. The valve according to claim 2, wherein the protrusion has an interference fit with the locking post.

11. the locking device includes a support rod and a locking member, and both ends of the support rod are fixedly connected to the valve stem and the locking member, respectively; the protrusion is provided to protrude from the locking member, and the protrusion surrounds the outer periphery of the support rod in the axial direction; 3. The valve according to claim 2, wherein the locking post has a connecting portion connected to the valve core body and a locking hook portion connected to the connecting portion on the opposite side from the valve core body, and the locking hook portion is bent and connected to the connecting portion, extending toward the support rod of the locking member.

12. The valve according to claim 11, characterized in that a blind hole is provided on a side of the valve body facing the passage, the blind hole is for accommodating a part of the locking member, and the protrusion is provided outside the blind hole.

13. The valve stem is provided with a first mounting hole and a second mounting hole, the extension direction of the first mounting hole and the extension direction of the second mounting hole are perpendicular to each other, and at least a portion of the first mounting hole penetrates the second mounting hole, the driver is provided with a first mounting post and a second mounting post, the first mounting post and the second mounting post being operably inserted into the first mounting hole; The valve according to claim 11, characterized in that the side of the support rod facing the valve stem passes through the second mounting hole, a portion of the support rod is positioned in the first mounting hole, and the portion of the support rod positioned in the first mounting hole is sandwiched between the first mounting post and the second mounting post.

14. 12. The valve according to claim 11, wherein the angular range through which the support rod is rotated by the valve stem is 160° to 170°.

15. 12. The valve according to claim 11, wherein when the opening between the valve core and the valve body is at its largest, the outer contour area of ​​the support rod facing the valve core is at its smallest.

16. The support rod has a rectangular parallelepiped structure, and the support rod has a pair of first side surfaces arranged opposite to each other and a pair of second side surfaces arranged opposite to each other, the first side surfaces and the second side surfaces are connected with a gap therebetween, and the area of ​​the first side surfaces is larger than the area of ​​the second side surfaces, 16. The valve of claim 15, wherein the second side faces toward the valve core when the opening between the valve core and the valve body is at its largest.

17. The connecting line between the connecting member and the valve core body and the locking post passes through the center of the valve core; 2. The valve according to claim 1, wherein the locking post has a connecting portion connected to the valve core body and a locking hook portion connected to the connecting portion on the opposite side from the valve core body, and the locking hook portion is bent and connected to the connecting portion, extending toward the connection point between the connecting member and the valve core body.

18. The valve according to claim 1, wherein the distance from the center of the valve core body to the center of the connection between the locking post and the valve core body is m, the distance from the center of the valve core body to the boundary of the valve core body facing the inlet is n, a connecting line from the center of the valve core body to the boundary of the valve core body facing the inlet passes through the center of the connection between the locking post and the valve core body, and m / n is in the range of 1 / 3 to 2 / 3.

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