Valve

Abstract

A valve (100), comprising a valve body (1), a valve core (2), a driver (3), a spring wire (4) and a valve stem (5), wherein the valve body (1) is provided with a channel (11) and a valve stem hole (12); the valve core (2) is provided with a recess (23); and two pits (24) are formed on the side wall of the recess (23). A driving assembly comprises the driver (3) and the spring wire (4), wherein the driver (3) is provided with a mounting hole (31), and the driver (3) is connected to the spring wire (4). The spring wire (4) is provided with two torsion arms, and the outer ends of the two torsion arms are located on the outer side of the driver (3). When the valve is closed, the valve stem (5) drives the driver (3) to rotate and the spring wire (4) is then driven to rotate, the outer ends of the two torsion arms disengage from the two pits (24) and abut against the side wall of the recess (23), and the spring wire (4) drives the valve core (2) to rotate. When the valve is opened, the valve stem (5) drives the driver (3) to rotate and the valve core (2) is then driven to rotate.

Description

Valve

[0001] Cross Reference to Related Applications

[0002] This patent application claims priority to the Chinese patent application with the application number 2024111101692 and the invention name "Valve", which was filed on August 13, 2024, and the entire contents of the above application are incorporated herein by reference. TECHNICAL FIELD

[0003] The present invention relates to a fluid control valve device, in particular to a valve BACKGROUND

[0004] The valve is an on-off device, which is suitable for use as a switch or a cut-off valve, and can be used for the regulation and control of fluid. With the continuous improvement of production processes and product structures, ball valves are widely used in the petroleum refining, long-distance pipeline, chemical, papermaking, pharmaceutical, water conservancy, power, municipal, steel and other industries, and play a vital role in the national economy.

[0005] In the prior art, when the valve core needs to be rotated, the valve stem generally drives the driving member to rotate, and the two elastic protrusions of the driving member are combined with the recesses at the top end of the valve core to drive the valve core to rotate synchronously. However, the elastic protrusions are prone to wear or breakage during use, so the prior art valve needs to be improved. SUMMARY

[0006] An object of the present invention is to provide a valve to solve the problems of the prior art.

[0007] To solve the above technical problems, an embodiment of the present invention provides a valve, comprising:

[0008] A valve body having a passage extending along a horizontal axis and a valve stem hole extending along a vertical axis to the passage, the passage being open at both ends along the horizontal axis;

[0009] A valve core installed in the passage and arranged to rotate around the vertical axis and have a movement component along the horizontal axis, the top surface of the valve core being provided with a recess aligned with the valve stem hole, the side wall of the recess forming two recesses recessed radially outward;

[0010] A drive assembly comprising a driver and a spring wire, the driver being installed in the recess and provided with a mounting hole, the driver being connected with the spring wire and movable relative to the spring wire; the spring wire having two torsion arms, the outer ends of the two torsion arms being located radially outward of the driver; and

[0011] a valve stem having a top end at the top of the valve body and a bottom end extending from the valve stem hole to the mounting hole of the driver;

[0012] when the valve is closed, the valve stem drives the driver to rotate around the vertical axis by a preset angle and then drives the spring wire to rotate synchronously, the outer ends of the two torsion arms gradually depart from the two recesses and abut against the side walls of the groove, and the spring wire drives the valve core to rotate around the vertical axis to a preset position.

[0013] when the valve is opened, the valve stem drives the driver to rotate around the vertical axis and drives the valve core to rotate around the vertical axis.

[0014] in an embodiment, the side walls of the groove form an inner cam profile protruding radially inwardly;

[0015] the driver is provided with an outer cam profile protruding radially outwardly;

[0016] when the valve is closed, the outer cam profile abuts against the side walls of the groove and drives the valve core to rotate around the vertical axis to a preset position synchronously with the spring wire, and then the outer cam profile moves along the inner cam profile and makes the valve core have a movement component along the horizontal axis;

[0017] when the valve is opened, the valve stem drives the driver to rotate around the vertical axis, so that the outer cam profile moves along the inner cam profile and makes the valve core have a movement component along the horizontal axis.

[0018] in an embodiment, the driver drives the spring wire to rotate synchronously after rotating around the vertical axis by a preset angle.

[0019] in an embodiment, when the valve is opened, the driver and the spring wire rotate synchronously and then relatively rotate relative to the spring wire.

[0020] in an embodiment, the top surface of the driver is provided with a limiting column;

[0021] the spring wire is connected with the limiting column, and the limiting column can move relative to the spring wire;

[0022] when the valve is closed, the limiting column rotates relative to the spring wire by a preset angle and then drives the spring wire to rotate synchronously.

[0023] in an embodiment, the bottom surface of the driver is provided with a first recessed area extending around the vertical axis, and the top wall of the first recessed area is provided with the limiting column;

[0024] The spring wire is located in the first recessed area and comprises a concave ring, which is sleeved outside the limiting column and connected with the inner ends of the two torsion arms respectively;

[0025] When the valve is closed, the limiting column rotates to the side where the concave ring faces away from the two torsion arms, and then drives the concave ring to rotate synchronously.

[0026] When the valve is opened, the limiting column rotates to the side where the concave ring deviates from the side where the concave ring faces away from the two torsion arms, and then drives the concave ring to rotate synchronously.

[0027] In one embodiment, one of the two torsion arms is a first torsion arm, and the other is a second torsion arm.

[0028] The first torsion arm has a curved arc segment.

[0029] The driver is further provided with a first limiting member, which is connected with the top wall of the first recessed area and located radially outside the first torsion arm.

[0030] In one embodiment, the driver is further provided with a second limiting member, which is connected with the top wall of the first recessed area and located at the position where the concave ring faces away from the torsion arm.

[0031] When the valve is opened, when the limiting column rotates to the side where the concave ring deviates from the side where the concave ring faces away from the two torsion arms, the second limiting member abuts against the position where the concave ring faces away from the torsion arm.

[0032] In one embodiment, the driver further comprises a third limiting member, which is covered outside the arc segment.

[0033] In one embodiment, the outer end of the torsion arm is bent at a preset angle to form an abutting segment,

[0034] When the valve is closed, the abutting segments of the two torsion arms gradually separate from the two recesses and abut against the side wall of the groove.

[0035] In one embodiment, the first torsion arm has a straight segment connected with the arc segment, the arc segment is an arc segment extending around the vertical axis and connected with the concave ring.

[0036] The inner end of the straight segment is connected with the arc segment, and the outer end is bent to form the abutting segment.

[0037] In one embodiment, the valve further comprises a metal sheet, which comprises a first segment and a second segment connected with each other, the first segment comprises a recessed segment abutting against the inner wall of the two recesses respectively; the second segment abuts against at least part of the side wall of the groove,

[0038] When the valve is closed, the outer ends of the two torsion arms gradually disengage from the first sections of the two metal sheets and abut against the second sections.

[0039] In one embodiment, the limiting column is located radially inside the first recessed area;

[0040] The top wall of the first recessed area is provided with a second recessed area, which is recessed radially outside the first recessed area;

[0041] A part of the torsion arm is located below the second recessed area.

[0042] In one embodiment, the first limiting member and the third limiting member are respectively connected with the top wall of the first recessed area.

[0043] In one embodiment, the bottom end of the valve core is provided with a positioning hole;

[0044] The bottom wall of the channel is provided with a positioning rod inserted into the positioning hole.

[0045] In one embodiment, the inner wall of the channel is provided with a convex ring, which extends around the horizontal axis and is close to the opening of one end of the channel;

[0046] The valve further comprises:

[0047] An inner valve seat, which is installed in the channel and located radially inside the convex ring along the horizontal axis;

[0048] An outer valve seat, which is located in the channel and radially outside the convex ring along the horizontal axis;

[0049] A positioning ring, which is connected with the radially inside of the convex ring and covers the inner valve seat along the radially inside of the horizontal axis, and covers the outer valve seat with the outer end;

[0050] A valve cover, which is connected with the valve body and covers the opening of one end of the channel, and is sealingly connected with the outer valve seat.

[0051] In one embodiment, the valve further comprises:

[0052] A sealing ring, which is sealingly connected with the inner wall of the channel and located at the opening of the other end of the channel; and

[0053] A flange, which is connected with the valve body and covers the opening of the other end of the channel, and is sealingly connected with the sealing ring.

[0054] In one embodiment, the bottom wall of the recess is provided with a plug hole;

[0055] The bottom end of the valve stem extends from the valve stem hole, the mounting hole to the insertion hole in sequence.

[0056] In one embodiment, the insertion hole is a square hole;

[0057] The mounting hole is a spline groove;

[0058] The bottom end of the valve stem respectively fits the insertion hole and the mounting hole. BRIEF DESCRIPTION OF DRAWINGS

[0059] Figure 1 is an exploded view of a valve according to one embodiment of the present application.

[0060] Figure 2 is a cross-sectional view of the valve in an open state according to the embodiment shown in Figure 1.

[0061] Figure 3 is an assembly view of the driver and the spring wire according to the embodiment shown in Figure 1.

[0062] Figure 4 is an exploded view of the driver and the spring wire according to the embodiment shown in Figure 3.

[0063] Figures 5, 6 and 7 are assembly views of the driver and the spring wire according to the embodiment shown in Figure 1.

[0064] Figure 8 is a cross-sectional view of the driver and the spring wire according to the embodiment shown in Figure 6.

[0065] Figure 9 is a top view of the valve core according to the embodiment shown in Figure 1.

[0066] Figures 10 and 11 are assembly views of the valve core, the driver and the spring wire in an open state according to the embodiment shown in Figure 1.

[0067] Figure 12 is a cross-sectional view of the assembly of the valve core, the driver and the spring wire according to the embodiment shown in Figure 11.

[0068] Figures 13 and 14 are assembly views of the valve core, the driver and the spring wire in a closed state according to the embodiment shown in Figure 1.

[0069] Figure 15 is a cross-sectional view of the valve core, the driver and the spring wire in a closed state according to the embodiment shown in Figure 14.

[0070] Figure 16 is a cross-sectional view of the valve in a closed state according to the embodiment shown in Figure 1.

[0071] 100, valve; 1, valve body; 11, passage; 12, valve rod hole; 13, positioning rod; 14, convex ring; 2, valve core; 21, sealing part; 22, flow channel; 23, groove; 231, insertion hole; 24, recess; 25, inner cam profile; 26, limiting protrusion; 27, outer concave profile; 28, metal sheet; 281, first section; 282, second section; 29, positioning hole; 3, driver; 31, mounting hole; 32, outer convex profile; 33, first recessed area; 34, second recessed area; 35, limiting column; 36, first limiting piece; 37, second limiting piece; 38, third limiting piece; 4, spring wire; 41, concave ring; 42, first torsion arm; 421, arc section; 422, straight section; 43, second torsion arm; 44, abutting section; 5, valve rod; 51, spline; 52, plug; 6, inner valve seat; 7, outer valve seat; 8, positioning ring; 9, sealing ring; 101, valve cover; 102, flange; 103, anti-theft ring. DETAILED DESCRIPTION

[0072] In order to make the objects, technical solutions and advantages of the present application clearer, the embodiments of the present application will be described in detail below with reference to the drawings. However, those skilled in the art can understand that, in the embodiments of the present application, many technical details are presented in order to make the readers better understand the present application. However, the technical solutions claimed in the claims of the present application can be implemented even without these technical details and based on various changes and modifications of the following embodiments.

[0073] Unless otherwise required by the context, the words "comprise", "comprising", "include", "including", and "has" and variations thereof throughout the specification and claims are to be construed as open-ended, i.e., to the effect that "including but not limited to".

[0074] The embodiments of the present application will be described in detail below with reference to the drawings, so as to make the objects, features and advantages of the present application clearer. It should be understood that the embodiments shown in the drawings are not intended to limit the scope of the present application, but only to illustrate the essential spirit of the technical solutions of the present application.

[0075] Reference throughout this specification to "one embodiment" or "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment is included in at least one embodiment. Thus, the appearances of the phrase "in one embodiment" or "in an embodiment" in various places throughout this specification are not necessarily all referring to the same embodiment. Furthermore, the particular features, structures, or characteristics can be combined in any suitable manner in one or more embodiments.

[0076] As used in this specification and the appended claims, the singular forms "a," "an" and "the" include plural referents unless the context clearly dictates otherwise. It should be noted that the term "or" is generally employed in its sense including "and / or", unless the context clearly dictates otherwise.

[0077] In the following description, for purposes of clarity, directional terms are used to describe the orientation of the present application. However, it is understood that the terms "front," "back," "left," "right," "up," "down," "over," "under," and the like are used herein, merely for purposes of description, and do not necessarily imply a specific orientation.

[0078] The present application relates to a valve 100, as shown in Fig. 1, which comprises a valve body 1, a valve core 2, a driving assembly, a valve stem 5, an inner valve seat 6, an outer valve seat 7, a positioning ring 8, a plurality of sealing rings 9 of different specifications, a valve cover 101, a flange 102, an anti-theft ring 103, and the like. The valve body 1 has a channel 11 extending along a horizontal axis, which extends through both ends of the valve body 1 along the horizontal axis, i.e., the channel 11 is open at both ends along the horizontal axis. The top surface of the valve body 1 is further provided with a valve stem hole 12 extending along a vertical axis, which extends to and communicates with the channel 11.

[0079] The valve core 2 is located in the channel 11 and can rotate around the vertical axis and has a slight movement component along the horizontal axis. In the embodiment shown in Fig. 1, the valve core 2 of the ball valve is generally in the form of a hollow sphere and has a sealing portion 21 and a flow passage 22, and the sealing portion 21 is a part of the spherical shell of the hollow sphere. The flow passage 22 extends through the valve core 2. When the valve 100 is open, the flow passage 22 of the valve core 2 extends in the same direction as the horizontal axis described above, the flow passage 22 communicates with the channel 11, and the fluid can pass through conveniently. When the valve is closed, the sealing portion 21 of the valve core 2 blocks the channel 11, limiting the passage of fluid.

[0080] The top surface of the valve core 2 is provided with a recess 23 aligned with the valve stem hole 12, which is generally in the form of a cylinder, and the side wall of the recess 23 forms two concave pits 24 which are radially outwardly recessed. In addition, the side wall of the recess 23 is provided with an inner cam profile 25 which is radially outwardly recessed and a limiting protrusion 26 which is radially outwardly protruded and is circumferentially spaced from the inner cam profile 25. The side wall of the recess 23 is further provided with an outer concave profile 27 which is radially outwardly recessed and is located between the limiting protrusion 26 and the inner cam profile 25.

[0081] The driving assembly comprises a driver 3 and a spring wire 4, wherein the driver 3 is substantially in the shape of a round cake and is installed in the groove 23, the driver 3 is provided with a mounting hole 31 extending along a vertical axis, the mounting hole 31 penetrates the top end and the bottom end of the driver 3 and is aligned with the valve rod hole 12 in the vertical direction. In the embodiment shown in FIGS. 3-5, the valve rod hole 12 is a spline groove.

[0082] The radially outer side of the driver 3 is provided with a protruding outer cam profile 32, the outer cam profile 32 protrudes from the radially outer side of the driver 3 and is located at the outer concave profile 27 of the groove 23 in the open state. In the closed state, the outer cam profile 32 is rotated to the inner cam profile 25 of the groove 23, thereby sealing and locking the valve core 2 and the passage 11.

[0083] The bottom wall of the driver 3 is provided with a first recessed area 33, the first recessed area 33 extends along the vertical axis to form an arc shape and is spaced apart from the outer cam profile 32. The top wall of the first recessed area 33 is further provided with a second recessed area 34 recessed upward, the second recessed area 34 is located at the radially outer side of the first recessed area 33 and is also substantially in the shape of an arc.

[0084] The top wall of the first recessed area 33 is further provided with a limiting column 35, the limiting column 35 is a column body and is located at the radially inner side of the first recessed area 33, the height of the column body does not exceed the bottom wall of the driver 3.

[0085] The spring wire 4 has a certain elasticity and can be bent when an external force is applied, and is generally made of steel wire. The spring wire 4 specifically comprises a concave ring 41 and two torsion arms, the concave ring 41 is annular and is sleeved outside the limiting column 35, the outer ends of the two torsion arms are located at the radially outer side of the driver 3, and the spring wire 4 and the driver 3 can move relative to each other. In other embodiments, the concave ring 41 can also be in the shape of a spring and be sleeved outside the limiting column 35, or the concave ring 41 and the limiting column 35 are not provided and the spring wire 4 is directly limited on the driver 3 by several limiting members.

[0086] It should be understood that, in other embodiments, the radially outer side of the driver 3 does not need to be provided with the outer cam profile 32, and correspondingly, the side wall of the groove 23 is also not provided with the radially inwardly protruding inner cam profile 25 and the limiting protrusion 26, that is, the driver 3 drives the valve core to rotate by other ways, and the spring wire 4 cooperates with the driver 3 to drive the valve core to rotate.

[0087] The top end of the valve rod 5 is located at the top of the valve body 1 and exceeds the top of the valve body 1 and is connected with an external handle, and rotating the handle can make the valve rod 5 link.

[0088] The bottom end of the valve rod 5 extends from the valve rod hole 12 to the mounting hole 31, the middle part of the valve rod 5 is sealedly connected with the valve rod hole 12 by two sealing rings 9, and the bottom end of the valve rod 5 is a spline 51 which is matched with the spline groove of the driver 3, which can refer to the patent CN103016776B and will not be described here.

[0089] The valve rod 5 can drive the driver to rotate and open or close the valve 100. When the valve is closed, the valve rod 5 drives the driver 3 to rotate relative to the spring wire 4 around the vertical axis by a preset angle, and then drives the spring wire 4 to rotate synchronously, that is, the limiting column rotates to the side away from the two torsion arms, and then drives the concave ring to rotate synchronously. The outer ends of the two torsion arms gradually move away from the two recesses 24 and abut against the side wall of the groove 23, the outer cam profile 32 abuts against the side wall of the groove 23 and synchronously drives the valve core 2 to rotate around the vertical axis to a preset position, about 90°, the outer cam profile 32 moves along the inner cam profile 25 and makes the valve core 2 have a movement component along the horizontal axis.

[0090] When the valve 100 is opened, the valve rod 5 drives the driver 3 to rotate around the vertical axis, so that the outer cam profile 25 moves along the inner cam profile 25 and makes the valve core 2 have a movement component along the horizontal axis, and the two torsion arms gradually move into the two recesses 24 and drive the valve core 2 to rotate, or the two torsion arms abut against the side wall of the groove 23 and drive the valve core 2 to rotate by a certain angle and then move into the recesses 24.

[0091] In the open state of the valve 100, as shown in FIGS. 10-12, the outer cam profile 32 of the driver 3 is located at the outer concave profile 27 of the groove 23, the outer ends of the two torsion arms are respectively located in the two recesses 24, and the flow channel 22 is aligned with the openings of the two ends of the passage 11, facilitating the flow of fluid along the horizontal axis. When the valve 100 is closed, the valve rod 5 needs to be rotated to drive the driver 3 to rotate, the limiting column 35 moves into the concave ring 41 of the spring wire 4 and drives the concave ring 41 and the spring wire 4 to rotate as a whole, and the cooperation of the two torsion arms of the spring wire 4 and the two recesses 24 and the cooperation of the outer cam profile 32 and the inner wall of the groove 23 can drive the valve core to rotate. Continue to rotate the valve rod 5, as shown in FIGS. 13-15, the outer ends of the two torsion arms of the spring wire gradually move out of the recesses 24 and abut against the side wall of the groove 23, and the outer cam profile 32 moves from the outer concave profile 27 to the inner cam profile 25 and moves along the inner cam profile 25, which tilts the valve core 2 along the horizontal axis by a certain component, so that the valve core 2 and the passage 11 are sealingly matched, and the valve 100 is closed.

[0092] When the valve 100 is opened, the valve stem 5 is rotated reversely, at this time, the valve stem 5 drives the driver 3 to rotate reversely around the vertical axis, the outer cam profile 32 moves reversely along the inner cam profile 25 to the outer concave profile 27, the two torsion arms gradually move to the two recesses and drive the valve core to rotate, so that the valve core 2 has a reverse moving component along the horizontal axis, the sealing part 21 of the valve core 2 and the passage of the valve body 1 are loosened. The valve stem 1 drives the driver 3 to drive the valve core to continue to reverse by about 90°, the flow passage 22 of the valve core 2 and the passage 11 of the valve body 1 are communicated, and the valve 100 is opened.

[0093] In one embodiment, when the valve 100 is opened, the driver 3 rotates around the vertical axis by a preset angle and then drives the spring wire 4 to rotate synchronously, that is, the driver 3 first rotates relative to the spring wire 4 by a certain angle, so that the limiting column and the concave ring are spaced away from the two torsion arms and then drive the spring wire 4 to move synchronously. The limiting column rotates relative to the concave ring to the side away from the two torsion arms and then drives the concave ring to rotate synchronously.

[0094] In one embodiment, when the valve is opened, the driver and the spring wire rotate synchronously and then move relative to the spring wire. That is, the driver 3 and the spring wire 4 rotate synchronously and then move relative to the spring wire 4, so that the limiting column and the concave ring are spaced away from the two torsion arms.

[0095] In addition, for the specific shape of the outer cam profile 32, reference can be made to the shapes of the starting part, the middle part and the ending part in the patent CN103016776B, and details are not described herein. It should be understood that in other embodiments, the outer cam profile 32 can also be provided in other shapes, as long as the outer cam profile 32 of the driver 3 facilitates movement to the radially inner side thereof and pushes the valve core to move along the horizontal axis, and the specific shape of the inner cam profile 32 is not limited.

[0096] As a preferred solution, the outer ends of the two torsion arms are bent by a preset angle to form abutting sections 44. In the embodiment shown in FIGS. 2-4, the outer ends of the two torsion arms are bent upward by about 90° to form the abutting sections 44. When the valve is opened, the abutting sections 44 of the two torsion arms are located in the two recesses 24 respectively. When the valve is closed, the abutting sections 44 of the two torsion arms gradually move away from the two recesses and abut against the side walls of the grooves 23. The abutting sections 44 can increase the friction and stability of the torsion arms and the side walls of the grooves 23.

[0097] In some embodiments, one of the two torsion arms is a first torsion arm 42, and the other is a second torsion arm 43. The second torsion arm 43 is substantially strip-shaped and extends along a tangent direction of a column formed by a vertical axis. The inner end of the second torsion arm 43 is connected to the concave ring 41, and the outer end is bent to form an abutting section 44. The length of the first torsion arm 42 is slightly longer than the length of the second torsion arm 43, and includes an arc-shaped section 421 and a straight section 422 connected to each other. The arc-shaped section 421 is an arc section extending around the vertical axis and is connected to the concave ring 41. The inner end of the straight section 422 is connected to the arc-shaped section 421, and the outer end extends to the outside of the driver 3 and is bent to form the abutting section 44.

[0098] In order to fix the bending direction of the first torsion arm 42, the top wall of the first recessed area 33 is further provided with a first limiting piece 36 located radially outside the first torsion arm 42. Specifically, the first limiting piece 36 is located radially outside the inner end of the straight section 422, that is, the straight section 422 of the first torsion arm 42 is fixed between the first limiting piece 36 and the side wall of the groove 23.

[0099] In some embodiments, the top wall of the first recessed area 33 is further provided with a second limiting piece 37 located radially outside the concave ring 41 and away from the position of the spring wire 4, to prevent the concave ring 41 from being separated from the limiting column 35. When the valve is opened, the limiting column rotates relative to the concave ring to deviate from the side of the concave ring away from the two torsion arms, and the second limiting piece abuts against the position of the concave ring away from the torsion arms and rotates the concave ring together with the limiting column.

[0100] In some other embodiments, the top wall of the second recessed area 34 is further provided with a third limiting piece 38 which is tubular and sleeved outside the arc-shaped section 421 of the first torsion arm 42 to fix the arc section.

[0101] The top wall of the first recessed area 33 is further provided with a second recessed area 34 which is substantially arc-shaped and extends around the vertical axis and is located radially outside the first recessed area 33, and the limiting column 35 is located radially inside the first recessed area 33.

[0102] The first limiting piece 36, the second limiting piece 37 and the second limiting piece 37 are all connected to the radially inner side of the first recessed area 33 and connected to the top wall of the first recessed area 33. The concave ring 41 is sleeved on the limiting column 35 and is also located radially inside the first recessed area. Part of the second torsion arm 43 is located below the first recessed area 33, and the other part is located below the second recessed area 34. The arc-shaped section 421 of the second torsion arm 43 is located radially inside the first recessed area 33, the inner end of the straight section 422 is located radially inside the first recessed area 33, and the outer end is located below the second recessed area 34. The second recessed area 34 provides space for the bending deformation of the two torsion arms.

[0103] As a preferred solution, the valve 100 further comprises a metal sheet 28, as shown in Fig. 1, which comprises a first segment 281 and a second segment 282 connected to each other, wherein the first segment 281 comprises two concave segments which are arc segments of a certain arc and respectively fit the inner walls of the two recesses 24.

[0104] The second segment 282 comprises several arc segments, one of which is located between the two concave segments and is connected to one end of each of the two concave segments, and the other two arc segments are respectively connected to the other two ends of the two concave segments.

[0105] When the valve is opened, the abutting segments 44 of the two torsion arms are respectively located in the first segment 281 of the metal sheet 28. When the valve is closed, the outer ends of the two torsion arms gradually move away from the first segment 281 of the two metal sheets 28 and abut against the second segment 282. The metal sheet 28 can prevent the torsion arms from causing wear to the side walls of the recess 23.

[0106] As a preferred solution, the bottom wall of the recess 23 is provided with a plug hole 231, and the bottom end of the valve rod 5 extends from the valve rod hole 12, the mounting hole 31 to the plug hole 231 in turn. The plug hole 231 is formed by a part of the bottom wall of the recess 23 being recessed, and the bottom end of the valve rod 5 can be inserted into the plug hole 231 and cooperate with the plug hole 231 to drive the valve core 2 to move.

[0107] The plug hole 231 is a square hole, and the mounting hole 31 is a spline groove. The bottom end of the valve rod 5 is inserted into the square hole, and a part of the valve rod 5 is also provided with a spline 51 that cooperates with the spline groove, that is, the bottom end of the valve rod 5 needs to be adapted to the plug hole 231 and the mounting hole 31 respectively.

[0108] The bottom end of the valve core 2 is provided with a positioning hole 29 which is located on the vertical axis, and the bottom wall of the passage 11 of the valve body 1 is provided with a positioning rod 13 which is inserted into the positioning hole 29. The valve core 2 can rotate around the positioning rod 13 when it rotates. It should be understood that when the valve core 2 moves along the horizontal axis, the positioning rod 13 can slightly swing and will not interfere with the movement of the valve core 2.

[0109] In the embodiment shown in Figs. 1 and 2, the top of the valve body 1 is also provided with a rod hole for mounting the positioning rod 13, and the bottom end of the positioning rod 13 is inserted into the rod hole and is in sealed connection with the rod hole through two sealing rings 9, and the top end extends into the passage 11 and is inserted into the positioning hole 29 of the valve core 2.

[0110] The inner wall of the passage 11 is provided with a convex ring 14 which extends around the horizontal axis and is close to the opening of one end of the passage 11.

[0111] The inner valve seat 6 and the outer valve seat 7 are annular and are respectively installed in the passage 11, the inner valve seat 6 is located at the inner side of the convex ring 14 along the horizontal axis, and the outer valve seat 7 is located at the outer side of the convex ring 14 along the horizontal axis. That is, the inner valve seat 6 and the outer valve seat 7 are respectively located at the two sides of the convex ring 14 along the horizontal axis. The inner valve seat 6 and the outer valve seat 7 can be silica gel rings or rubber rings, the inner valve seat 6 is used for sealing connection with the valve core 2, and the outer valve seat 7 is used for sealing connection with the valve rod 5.

[0112] The positioning ring 8 is also annular and is connected with the radially inner side of the convex ring 14, the width of the positioning ring 8 along the horizontal axis is greater than the width of the inner valve seat 6 and the outer valve seat 7 along the horizontal axis, so that after the positioning ring 8 is installed on the convex ring 14, the inner valve seat 6 is covered on the inner side of the positioning ring 8 along the horizontal axis, and the outer valve seat 7 is covered on the outer side of the positioning ring 8 along the horizontal axis, and the inner valve seat 6 and the outer valve seat 7 can be fixed.

[0113] When the valve is opened, the valve core 2 is away from the inner valve seat 6, and when the valve is closed, the sealing part 21 of the valve core 2 blocks the passage 11 and sealingly abuts against the inner valve seat 6.

[0114] The valve cover 101 is connected with the valve body 1 and covers one end opening of the passage 11, and the valve cover 101 is sealingly connected with the outer valve seat 7.

[0115] The flange 102 is connected with the valve body 1 and covers the other end opening of the passage 11, and the flange 102 is sealingly connected with the valve body 1 through another sealing ring 9, the sealing ring 9 is sealingly connected with the inner wall of the passage 11 and is located at the other end opening of the passage 11.

[0116] The anti-theft ring is connected with the valve cover 101 and is used for anti-theft, and the top end of the valve rod 5 is hollow and internally installed with a plug 52.

[0117] The spring wire 4 is used to replace the previous elastic convex ribs, so that the service life of the valve body 1 can be increased, and even if the spring wire 4 is broken, only the spring wire 4 needs to be replaced, thereby reducing the maintenance cost.

[0118] The preferred embodiments of the present application have been described in detail above, but it should be understood that aspects of the embodiments can be modified to employ aspects, features and concepts of various patents, applications and publications to provide additional embodiments, if desired.

[0119] These and other changes can be made to the embodiments in light of the above Detailed Description. In general, in the appended claims, the terms used should not be construed to limit the claimed embodiments to the specific embodiments disclosed in the specification and claims, but should be construed to include all embodiments falling within the scope of the claims along with the full equivalent thereof.

[0120] Those skilled in the art can understand that the above-mentioned embodiments are specific examples for implementing the present application, and various changes can be made in form and details in practical application without departing from the spirit and scope of the present application.

Claims

1. A valve, characterized in that Comprising: a valve body having a passage extending along a horizontal axis and a valve stem hole extending to the passage along a vertical axis, the passage being open at both ends along the horizontal axis; a valve core installed in the passage and arranged to be rotatable about the vertical axis and to have a movement component along the horizontal axis, a top surface of the valve core being provided with a recess aligned with the valve stem hole, side walls of the recess forming two pits concave radially outward; a drive assembly including a driver and a spring wire, the driver being installed in the recess and provided with a mounting hole, the driver being connected with the spring wire and movable relative to the spring wire, the spring wire having two torsion arms, outer ends of the two torsion arms being located radially outward of the driver; and a valve stem having a top end located at a top of the valve body and a bottom end extending from the valve stem hole to the mounting hole of the driver; when the valve is closed, the valve stem drives the driver to rotate about the vertical axis by a preset angle relative to the spring wire and then drives the spring wire to rotate synchronously, outer ends of the two torsion arms gradually disengage from the two pits and abut against the side walls of the recess, the spring wire drives the valve core to rotate about the vertical axis to a preset position; when the valve is opened, the valve stem drives the driver to rotate about the vertical axis and drives the valve core to rotate about the vertical axis.

2. The valve of claim 1, wherein The side walls of the recess form an inner cam profile convex radially inward; the radially outer side of the driver is provided with an outer cam profile convex; when the valve is closed, the outer cam profile abuts against the side walls of the recess and drives the valve core to rotate about the vertical axis to a preset position synchronously with the spring wire, then the outer cam profile moves along the inner cam profile and causes the valve core to have a movement component along the horizontal axis; when the valve is opened, the valve stem drives the driver to rotate about the vertical axis, causing the outer cam profile to move along the inner cam profile and causing the valve core to have a movement component along the horizontal axis.

3. The valve according to claim 2, wherein when the valve is opened, the driver rotates about the vertical axis by a preset angle and then drives the spring wire to rotate synchronously.

4. The valve of claim 2, wherein when the valve is opened, the driver and the spring wire rotate synchronously and then rotate relative to each other relative to the spring wire.

5. The valve of claim 3, wherein a top surface of the driver is provided with a limiting column; the spring wire is connected with the limiting column, the limiting column being movable relative to the spring wire; when the valve is closed, the limiting column rotates relative to the spring wire by a preset angle and then drives the spring wire to rotate synchronously.

6. The valve of claim 5, wherein a bottom surface of the driver is provided with a first recessed area extending about the vertical axis, a top wall of the first recessed area being provided with the limiting column; the spring wire is located in the first recessed area and includes a recessed ring, the recessed ring being sleeved outside the limiting column and having two ends connected with inner ends of the two torsion arms respectively; when the valve is closed, the limiting column rotates to a side of the recessed ring away from the two torsion arms and then drives the recessed ring to rotate synchronously. When the valve is opened, the limiting column rotates relative to the concave ring to deviate from the side of the concave ring away from the two torsion arms, and then drives the concave ring to rotate synchronously.

7. The valve of claim 6, wherein One of the two torsion arms is a first torsion arm, The other is a second torsion arm. The first torsion arm has a curved arc segment. The driver is further provided with a first limiting member, which is connected with the top wall of the first recessed area and located on the radial outside of the first torsion arm.

8. The valve of claim 7, wherein The driver is further provided with a second limiting member, which is connected with the top wall of the first recessed area and located at the position of the concave ring away from the torsion arm. When the valve is opened, the limiting column rotates relative to the concave ring to deviate from the side of the concave ring away from the two torsion arms, and the second limiting member abuts against the position of the concave ring away from the torsion arm.

9. The valve of claim 7, wherein The driver further includes a third limiting member, which is covered outside the arc segment.

10. The valve of claim 7, wherein The outer end of the torsion arm is bent by a preset angle to form an abutting segment, When the valve is closed, the abutting segments of the two torsion arms gradually separate from the two recesses and abut against the side wall of the groove.

11. The valve of claim 10, wherein The first torsion arm has a straight segment connected with the arc segment, the arc segment is an arc segment extending around the vertical axis and connected with the concave ring; The inner end of the straight segment is connected with the arc segment, and the outer end is bent to form the abutting segment.

12. The valve of claim 2, wherein The valve further includes a metal sheet, which includes a first segment and a second segment connected with each other, the first segment includes recessed segments respectively fitted to the inner walls of the two recesses; the second segment is fitted to at least a part of the side wall of the groove, When the valve is closed, the outer ends of the two torsion arms gradually separate from the first segments of the two metal sheets and abut against the second segments.

13. The valve of claim 9, wherein The limiting column is located on the radial inside of the first recessed area; The top wall of the first recessed area is provided with a second recessed area, which is formed by recessing on the radial outside of the first recessed area; A part of the torsion arm is located below the second recessed area.

14. The valve of claim 13, wherein The first limiting member and the third limiting member are respectively connected with the top wall of the first recessed area.

15. The valve of claim 1, wherein The bottom end of the valve core is provided with a positioning hole; The bottom wall of the channel is provided with a positioning rod inserted into the positioning hole.

16. The valve of claim 1, wherein The inner wall of the channel is provided with a convex ring, which extends around the horizontal axis and is close to the opening of one end of the channel; The valve further includes: An inner valve seat, which is installed in the channel and located on the inner side of the convex ring along the horizontal axis; An outer valve seat, which is located in the channel and located on the outer side of the convex ring along the horizontal axis; A positioning ring, which is connected with the radial inside of the convex ring and covers the inner valve seat on the inner side of the horizontal axis, and covers the outer valve seat on the outer end; and A valve cover, which is connected with the valve body and covers one end opening of the channel, and is sealingly connected with the outer valve seat.

17. The valve of claim 1, wherein The valve further includes: A sealing ring, which is sealingly connected with the inner wall of the channel and located at the other end opening of the channel; and A flange, which is connected with the valve body and covers the other end opening of the channel, and is sealingly connected with the sealing ring. The valve further includes: A sealing ring, which is sealingly connected with the inner wall of the channel and located at the other end opening of the channel; and A flange, which is connected with the valve body and covers the other end opening of the channel, and is sealingly connected with the sealing ring.

18. The valve of claim 1, wherein A bottom wall of the groove is provided with a plug hole; The bottom end of the valve stem extends from the valve stem hole, the mounting hole to the plug hole in turn.

19. The valve of claim 18, wherein The plug hole is a square hole; The mounting hole is a spline groove; The bottom end of the valve stem is respectively matched with the plug hole and the mounting hole.

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