Bidirectional hard sealing butterfly valve

Abstract

The utility model provides a two-way hard sealing butterfly valve which comprises a butterfly valve body, a butterfly plate is arranged in the butterfly valve body, two rotating shaft connecting pieces are fixedly connected to one side of the butterfly plate, the two rotating shaft connecting pieces are located at the positions of the upper side and the lower side of the butterfly plate, first rotating pieces are fixedly connected to the two sides of the butterfly plate, and second rotating pieces are fixedly connected to the two sides of the butterfly plate. The two first rotating pieces are located at the edges of the left side and the right side of the butterfly plate correspondingly, and the ends, away from the butterfly plate, of the first rotating pieces are rotationally connected with connecting rods. According to the two-way hard sealing butterfly valve, the inner wall of the butterfly valve body is self-cleaned by the annular piece in the opening and closing process of the two-way hard sealing butterfly valve, the accumulation of transported objects on the inner wall of the butterfly valve body is prevented, the inner wall of the two-way hard sealing butterfly valve can be self-cleaned, the use of the two-way hard sealing butterfly valve is facilitated, and the service life of the two-way hard sealing butterfly valve is prolonged. In addition, direct impact of transported objects on the side wall of the butterfly plate can be reduced, and the service life of the bidirectional hard sealing butterfly valve is prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of butterfly valves, in particular to a bidirectional hard-sealed butterfly valve. Background Art

[0002] Bidirectional hard-sealed butterfly valve is a type of butterfly valve with bidirectional sealing function. Bidirectional hard-sealed butterfly valve is sealed with metal materials or other harder materials. Bidirectional hard-sealed butterfly valve is widely used in pipeline systems in petroleum, chemical, electric power, metallurgy and other industries, especially suitable for high temperature, high pressure, corrosive media and other working conditions.

[0003] Bidirectional hard-sealed butterfly valves are usually installed in various pipelines for use. After long-term use in some pipelines that transport particles, some transported materials will accumulate on the inner wall of the bidirectional hard-sealed butterfly valve. The existing bidirectional hard-sealed butterfly valve does not have self-cleaning ability, resulting in more and more residual transported materials in the bidirectional hard-sealed butterfly valve, which is not conducive to the use of the bidirectional hard-sealed butterfly valve. In addition, the particle transported materials will continuously grind the butterfly plate and accelerate the wear of the butterfly plate. In order to solve the above problems, we proposed a bidirectional hard-sealed butterfly valve. Utility Model Content

[0004] The utility model aims to provide a bidirectional hard-sealed butterfly valve, in which the annular member performs self-cleaning on the inner wall of the butterfly valve body during the opening and closing process of the bidirectional hard-sealed butterfly valve, thereby preventing the accumulation of transported objects on the inner wall of the butterfly valve body. The inner wall of the bidirectional hard-sealed butterfly valve can be self-cleaned, which is beneficial to the use of the bidirectional hard-sealed butterfly valve. In addition, the impact of transported objects directly on the side wall of the butterfly plate can be reduced, thereby increasing the service life of the butterfly plate and increasing the service life of the bidirectional hard-sealed butterfly valve.

[0005] The embodiment of the utility model is achieved as follows:

[0006] The utility model embodiment provides a bidirectional hard-sealed butterfly valve, including a butterfly valve body, a butterfly plate is arranged in the butterfly valve body, one side of the butterfly plate is fixedly connected to two rotating shaft connecting parts, the two rotating shaft connecting parts are located at the upper and lower sides of the butterfly plate, both sides of the butterfly plate are fixedly connected to a No. 1 rotating part, the two No. 1 rotating parts are respectively located at the left and right side edge positions of the butterfly plate, the end of the No. 1 rotating part away from the butterfly plate is rotatably connected to a connecting rod, the end of the connecting rod away from the No. 1 rotating part is rotatably connected to a No. 2 rotating part, the end of the No. 2 rotating part away from the connecting rod is fixedly connected to a gear rod, the two ends of the gear rod are commonly fixedly connected to an annular part, the outer wall of the annular part is slidably connected to the inner wall of the butterfly valve body.

[0007] Optionally, a side of the gear lever away from the second rotating member is provided with a rounded corner, and both left and right sides of the gear lever are inclined surfaces tangent to the rounded corner.

[0008] Optionally, a rotation groove and a rotation connection hole are connected on the inner wall of the butterfly valve body, and the rotation groove and the rotation connection hole are located at the upper and lower sides of the butterfly valve body. The central axis of the rotation groove is colinear with the central axis of the rotation connection hole, and connecting flanges are fixedly connected at both ends of the butterfly valve body.

[0009] Optionally, a driven shaft is rotatably connected to the inner wall of the rotating groove, one end of which is fixedly connected to the shaft connecting piece on the lower side, and a driving shaft is rotatably connected to the inner wall of the rotating connection hole, one end of which is fixedly connected to the shaft connecting piece on the upper side.

[0010] Optionally, an annular step is fixedly connected to the inner wall of the butterfly valve body, an annular groove is opened inside the annular step, a sealing ring is arranged in the annular groove, one side of the sealing ring passes through the inner wall of the annular groove and contacts the outer wall of the butterfly plate.

[0011] Optionally, a plurality of filling rings are provided on the inner wall of the rotating connection hole, the inner wall of the filling ring is rotatably connected to the outer wall of the driving shaft, and the end of the rotating connection hole away from the butterfly valve body is fixedly connected to a filling fixture by bolts, and the filling fixture is in contact with the filling ring on the upper side.

[0012] Optionally, a support member is fixedly installed on one end of the rotating connection hole away from the butterfly valve body by bolts, and a control device is fixedly installed on one side of the support member away from the rotating connection hole by bolts, and the output end of the control device is fixedly connected to the other end of the driving shaft.

[0013] The beneficial effects of the embodiments of the utility model include: the embodiments of the utility model provide a two-way hard-sealed butterfly valve, which is connected to the pipeline that needs to use the two-way hard-sealed butterfly valve through two connecting flanges, and the two-way hard-sealed butterfly valve is installed on the pipeline for use, and the operating control device drives the driving shaft to rotate, and the driving shaft drives the upper shaft connecting member to rotate, and at the same time, the lower shaft connecting member drives the driven shaft to rotate synchronously in the rotating groove, and with the cooperation of the lower shaft connecting member, the driven shaft and the rotating groove, the upper shaft connecting member drives the butterfly plate to rotate, and under the drive of the butterfly plate, the No. 1 rotating member drives the connecting rod to move, and the connecting rod pushes the No. 2 rotating member and the annular member to move, and the control device allows the butterfly plate to rotate ninety degrees and then stop rotating. At this time, the two-way hard-sealed butterfly valve is opened, and the transported objects at one end of the two-way hard-sealed butterfly valve can enter the pipeline at the other end through the two-way hard-sealed butterfly valve, and the two gear levers are located at the two The two ends of the butterfly plate can reduce the impact of the transported objects directly on the side wall of the butterfly plate. When the two-way hard-sealed butterfly valve is closed, the control device drives the driving shaft to reverse, the driving shaft drives the shaft connecting piece to reverse, and the shaft connecting piece drives the butterfly plate to reverse. Under the action of the butterfly plate, the No. 1 rotating piece drives the connecting rod to move, and the connecting rod pulls the No. 2 rotating piece and the annular piece to move. The control device allows the butterfly plate to rotate ninety degrees and then stop rotating. At this time, the side wall of the butterfly plate squeezes the sealing ring in the annular groove to close the two-way hard-sealed butterfly valve. The annular piece self-cleans the inner wall of the butterfly valve body during the opening and closing process of the two-way hard-sealed butterfly valve to prevent the accumulation of transported objects on the inner wall of the butterfly valve body, and can self-clean the inner wall of the two-way hard-sealed butterfly valve, which is beneficial to the use of the two-way hard-sealed butterfly valve. In addition, it can reduce the direct impact of transported objects on the side wall of the butterfly plate, increase the service life of the butterfly plate, and increase the service life of the two-way hard-sealed butterfly valve. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the utility model and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying creative work.

[0015] Figure 1 This is a schematic diagram of the overall structure of a bidirectional hard-sealed butterfly valve of the utility model;

[0016] Figure 2 This is a schematic diagram of the internal structure of a butterfly valve body of a bidirectional hard-sealed butterfly valve of the utility model;

[0017] Figure 3 It is a cross-sectional schematic diagram of a bidirectional hard-sealed butterfly valve of the utility model;

[0018] Figure 4 The utility model is a two-way hard seal butterfly valve Figure 3 Enlarged schematic diagram at point A in the middle.

[0019] Icons: 1. Butterfly valve body; 11. Rotating groove; 12. Rotating connecting hole; 13. Connecting flange; 14. Annular step; 141. Annular groove; 15. Sealing ring; 2. Butterfly plate; 21. Rotating shaft connecting piece; 22. Rotating piece No. 1; 31. Connecting rod; 32. Rotating piece No. 2; 33. Gear lever; 34. Annular piece; 41. Driven rotating shaft; 42. Driving rotating shaft; 51. Filling ring; 52. Filling fixing piece; 6. Control device; 61. Support piece. DETAILED DESCRIPTION

[0020] In order to make the purpose, technical scheme and advantages of the embodiments of the utility model clearer, the technical scheme in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Therefore, the following detailed description of the embodiments of the utility model provided in the drawings is not intended to limit the scope of the utility model claimed for protection, but merely represents the selected embodiments of the utility model. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the utility model.

[0021] In the description of the present utility model, it should be noted that the terms "center", "upper", "lower", "vertical", "horizontal", "inner", "outer", etc. indicate the orientation or position relationship based on the orientation or position relationship shown in the drawings, or the orientation or position relationship in which the utility model product is usually placed when in use, which is only for the convenience of describing the utility model and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present utility model. In addition, the terms "first", "second", "third", etc. are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.

[0022] In addition, the terms "horizontal", "vertical" and the like do not mean that the components are required to be absolutely horizontal or suspended, but can be slightly tilted. For example, "horizontal" only means that its direction is more horizontal than "vertical", and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0023] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0024] like Figure 1-4 As shown, an embodiment of the utility model provides a bidirectional hard-sealed butterfly valve, including a butterfly valve body 1, a butterfly plate 2 is arranged in the butterfly valve body 1, one side of the butterfly plate 2 is fixedly connected with two rotating shaft connecting members 21, the two rotating shaft connecting members 21 are located at the upper and lower sides of the butterfly plate 2, both sides of the butterfly plate 2 are fixedly connected with a No. 1 rotating member 22, the two No. 1 rotating members 22 are respectively located at the left and right side edge positions of the butterfly plate 2, one end of the No. 1 rotating member 22 away from the butterfly plate 2 is rotatably connected with a connecting rod 31, the end of the connecting rod 31 away from the No. 1 rotating member 22 is rotatably connected with a No. 2 rotating member 32, the end of the No. 2 rotating member 32 away from the connecting rod 31 is fixedly connected with a gear rod 33, and the two ends of the gear rod 33 are commonly fixedly connected with a ring member 34, and the outer wall of the ring member 34 is slidably connected to the inner wall of the butterfly valve body 1.

[0025] As shown in the butterfly valve body 1-4, the butterfly plate 2 is driven to rotate within ninety degrees by the rotating shaft connecting member 21. During the rotation, the butterfly plate 2 drives the No. 1 rotating member 22 to rotate. The rotating connecting rod 31 on the No. 1 rotating member 22 pushes the rotating No. 2 rotating member 32 on the connecting rod 31 to move. The No. 2 rotating member 32 pushes the annular member 34 to move. The annular member 34 slides on the inner wall of the butterfly valve body 1 to self-clean the residual transported objects on the inner wall of the butterfly valve body 1 to prevent the residual transported objects from accumulating more and more.

[0026] In this embodiment, Figure 2 As shown, a rounded corner is provided on one side of the lever 33 away from the second rotating member 32 , and both left and right sides of the lever 33 are inclined surfaces tangent to the rounded corner.

[0027] like Figure 2 As shown, the filleting of one side of the stop rod 33 towards both ends of the butterfly valve body 1 and the design of the two sides of the stop rod 33 as inclined surfaces are beneficial to the flow of the transported objects, while reducing the direct impact of the transported objects on the side of the butterfly plate 2 and slowing down the wear of the butterfly plate 2.

[0028] In this embodiment, Figure 3As shown, a rotation groove 11 and a rotation connection hole 12 are connected on the inner wall of the butterfly valve body 1. The rotation groove 11 and the rotation connection hole 12 are located at the upper and lower sides of the butterfly valve body 1. The central axis of the rotation groove 11 is colinear with the central axis of the rotation connection hole 12. Both ends of the butterfly valve body 1 are fixedly connected with connecting flanges 13.

[0029] Optionally, a driven shaft 41 is rotatably connected to the inner wall of the rotating groove 11, one end of the driven shaft 41 is fixedly connected to the lower shaft connecting member 21, and a driving shaft 42 is rotatably connected to the inner wall of the rotating connection hole 12, one end of the driving shaft 42 is fixedly connected to the upper shaft connecting member 21.

[0030] like Figure 3 As shown, the movement of the driven shaft 41 is limited by the rotating groove 11 to provide support for the rotation of the driven shaft 41, the rotating connection hole 12 is used to support the rotation of the driving shaft 42, and the connecting flanges 13 at both ends are used to connect the pipelines that need to be connected.

[0031] In this embodiment, Figure 3 As shown, an annular step 14 is fixedly connected to the inner wall of the butterfly valve body 1, an annular groove 141 is opened inside the annular step 14, a sealing ring 15 is arranged in the annular groove 141, one side of the sealing ring 15 passes through the inner wall of the annular groove 141 and contacts the outer wall of the butterfly plate 2.

[0032] like Figure 3 As shown, the annular groove 141 in the annular step 14 allows the butterfly plate 2 to be closed, thereby sealing the bidirectional hard-sealed butterfly valve.

[0033] In this embodiment, Figure 3 As shown, a support member 61 is fixedly installed on one end of the rotating connection hole 12 away from the butterfly valve body 1 by bolts, and a control device 6 is fixedly installed on the side of the support member 61 away from the rotating connection hole 12 by bolts, and the output end of the control device 6 is fixedly connected to the other end of the driving shaft 42.

[0034] like Figure 3 As shown, the control device 6 is connected, fixed and supported to the rotating connection hole 12 by the support member 61 , and the control device 6 is used to drive the rotation of the driving shaft 42 .

[0035] In this embodiment, Figure 4 As shown, a plurality of filling rings 51 are provided on the inner wall of the rotating connection hole 12, and the inner wall of the filling ring 51 is rotatably connected to the outer wall of the driving shaft 42. The end of the rotating connection hole 12 away from the butterfly valve body 1 is fixedly connected to a filling fixture 52 by bolts, and the filling fixture 52 is in contact with the filling ring 51 on the upper side.

[0036] like Figure 4As shown, the filling ring 51 is used to fill and seal the driving shaft 42 and the rotating connection hole 12 , and the filling fixing member 52 is used to fix and seal the filling ring 51 .

[0037] It should be noted that the utility model is a two-way hard-sealed butterfly valve, which is connected to the pipeline that needs to use the two-way hard-sealed butterfly valve through two connecting flanges 13, and the two-way hard-sealed butterfly valve is installed on the pipeline for use. The control device 6 drives the driving shaft 42 to rotate, and the driving shaft 42 drives the upper shaft connecting member 21 to rotate, and at the same time, the lower shaft connecting member 21 drives the driven shaft 41 to rotate synchronously in the rotating groove 11. Under the cooperation of the lower shaft connecting member 21, the driven shaft 41 and the rotating groove 11, the upper shaft connecting member 21 drives the butterfly plate 2 to rotate. Driven by the butterfly plate 2, the No. 1 rotating member 22 drives the connecting rod 31 to move, and the connecting rod 31 pushes the No. 2 rotating member 32 and the annular member 34 to move. The control device 6 allows the butterfly plate 2 to rotate ninety degrees and then stop rotating. At this time, the two-way hard-sealed butterfly valve is opened, and the transported objects at one end of the two-way hard-sealed butterfly valve can enter the pipeline at the other end through the two-way hard-sealed butterfly valve. , the annular member 34 performs self-cleaning on the inner wall of the butterfly valve body 1 during the opening of the two-way hard-sealed butterfly valve, thereby preventing the accumulation of transported objects on the inner wall of the butterfly valve body 1. The two gear levers 33 are located at both ends of the two butterfly plates 2, which can reduce the impact of the transported objects directly on the side walls of the butterfly plates 2. When closing the two-way hard-sealed butterfly valve, the control device 6 drives the driving shaft 42 to reverse, the driving shaft 42 drives the shaft connecting member 21 to reverse, and the shaft connecting member 21 drives the butterfly plate 2 to reverse. Under the action of the butterfly plate 2, the No. 1 rotating member 22 drives the connecting rod 31 to move, and the connecting rod 31 pulls the No. 2 rotating member 32 and the annular member 34 to move. The control device 6 allows the butterfly plate 2 to rotate ninety degrees and then stop rotating. At this time, the side wall of the butterfly plate 2 squeezes the sealing ring 15 in the annular groove 141, and the two-way hard-sealed butterfly valve is closed. The annular member 34 performs self-cleaning on the inner wall of the butterfly valve body 1 during the closing of the two-way hard-sealed butterfly valve, thereby preventing the accumulation of transported objects on the inner wall of the butterfly valve body 1.

[0038] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. For those skilled in the art, the present invention may be subject to various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A bidirectional hard-sealed butterfly valve, comprising a butterfly valve body (1), characterized in that: A butterfly plate (2) is provided in the butterfly valve body (1), and two rotating shaft connecting members (21) are fixedly connected to one side of the butterfly plate (2), and the two rotating shaft connecting members (21) are located at the upper and lower sides of the butterfly plate (2). A No. 1 rotating member (22) is fixedly connected to both sides of the butterfly plate (2), and the two No. 1 rotating members (22) are respectively located at the left and right side edge positions of the butterfly plate (2). The No. 1 rotating member (22) is rotatably connected to a connecting rod (31) at one end away from the butterfly plate (2), and the No. 2 rotating member (32) is rotatably connected to the end of the connecting rod (31) away from the No. 1 rotating member (22). A gear rod (33) is fixedly connected to the end of the No. 2 rotating member (32) away from the connecting rod (31), and both ends of the gear rod (33) are commonly fixedly connected to a ring member (34), and the outer wall of the ring member (34) is slidably connected to the inner wall of the butterfly valve body (1).

2. A bidirectional hard-sealed butterfly valve according to claim 1, characterized in that: A rounded corner is provided on one side of the shift lever (33) away from the second rotating member (32), and both left and right sides of the shift lever (33) are inclined surfaces tangent to the rounded corner.

3. A bidirectional hard-sealed butterfly valve according to claim 2, characterized in that: A rotation groove (11) and a rotation connection hole (12) are connected on the inner wall of the butterfly valve body (1); the rotation groove (11) and the rotation connection hole (12) are located at upper and lower sides of the butterfly valve body (1); the central axis of the rotation groove (11) and the central axis of the rotation connection hole (12) are colinear; and connecting flanges (13) are fixedly connected to both ends of the butterfly valve body (1).

4. A bidirectional hard-sealed butterfly valve according to claim 3, characterized in that: A driven rotating shaft (41) is rotatably connected to the inner wall of the rotating groove (11), one end of which is fixedly connected to the rotating shaft connecting member (21) at the lower side; a driving rotating shaft (42) is rotatably connected to the inner wall of the rotating connection hole (12), one end of which is fixedly connected to the rotating shaft connecting member (21) at the upper side.

5. A bidirectional hard-sealed butterfly valve according to claim 4, characterized in that: An annular step (14) is fixedly connected to the inner wall of the butterfly valve body (1), an annular groove (141) is provided inside the annular step (14), a sealing ring (15) is provided inside the annular groove (141), and one side of the sealing ring (15) passes through the inner wall of the annular groove (141) and contacts the outer wall of the butterfly plate (2).

6. A bidirectional hard-sealed butterfly valve according to claim 5, characterized in that: A plurality of filling rings (51) are provided on the inner wall of the rotating connection hole (12), and the inner wall of the filling ring (51) is rotatably connected to the outer wall of the driving shaft (42). An end of the rotating connection hole (12) away from the butterfly valve body (1) is fixedly connected to a filling fixture (52) by bolts, and the filling fixture (52) is in contact with the filling ring (51) on the upper side.

7. A bidirectional hard-sealed butterfly valve according to claim 6, characterized in that: A support member (61) is fixedly mounted on one end of the rotary connection hole (12) away from the butterfly valve body (1) by means of bolts, and a control device (6) is fixedly mounted on one side of the support member (61) away from the rotary connection hole (12) by means of bolts, and an output end of the control device (6) is fixedly connected to the other end of the driving shaft (42).

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