Butterfly valve with locking function

Abstract

The utility model discloses a butterfly valve with a locking function, which comprises a valve body, a valve plate is rotatably connected in the valve body, the top of the valve plate is fixedly connected with a shaft lever, the shaft lever penetrates through the valve body and then is fixedly connected with a rotating handle, the bottom of the rotating handle is rotatably connected with a limiting plate, the fixed side of the valve body is fixedly connected with a plurality of groups of arc-shaped plates, and the arc-shaped plates are fixedly connected with the valve body. According to the utility model, the valve body is connected to the pipeline, then the rotating handle and the limiting plate are held, the limiting plate rotates and is not clamped with the arc-shaped groove outside the arc-shaped plate, and then the rotating handle is rotated to drive the shaft rod to rotate, so that the valve plate is driven to rotate; and through the arrangement of the limiting assembly, the limiting plate can be stably clamped, limiting is completed, and therefore the safety and stability of the valve body in the working process can be improved.

Description

Technical Field

[0001] The utility model relates to the technical field of valves, in particular to a butterfly valve with a locking function. Background Art

[0002] A butterfly valve, also known as a flap valve, is a regulating valve with a simple structure. It can be used for the on-off control of low-pressure pipeline media. A butterfly valve refers to a valve with a closing member as a disc, which rotates around the valve axis to achieve opening and closing. The valve can be used to control the flow of various types of fluids such as air, water, steam, various corrosive media, mud, oil, liquid metal and radioactive media. It mainly plays a cutting and throttling role in the pipeline. The butterfly valve opening and closing member is a disc-shaped butterfly plate, which rotates around its own axis in the valve body to achieve the purpose of opening and closing or regulation.

[0003] In the prior art, a Chinese patent with announcement number: CN 210068975 U discloses a new type of butterfly valve, including a valve body and a valve stem vertically penetrating the valve body, a valve plate is fixedly sleeved on the side wall of the valve stem, the valve plate is matched and connected with the inner wall of the valve body, a valve cover is provided at the top of the valve body, the top of the valve stem penetrates the valve cover and is fixedly connected with a handle, a valve seat is provided at the bottom end of the valve body, a movable groove is provided in the valve seat, the bottom end of the valve stem penetrates into the movable groove, a transmission mechanism is fixedly installed in the movable groove, the bottom end of the valve stem is fixedly connected to the transmission mechanism, a limiting mechanism is provided between the transmission mechanism and the inner wall of the movable groove, and a sealing mechanism matching the outer wall of the valve plate is provided inside the valve body.

[0004] The patent has the following disadvantages when actually used: the butterfly valve in the patent does not have a stable locking structure, so the valve plate is prone to shaking under the impact of the fluid. In addition, the patent cannot ensure the stability of the valve plate simply by setting the transmission gear. Utility Model Content

[0005] In view of the problems existing in the prior art, the utility model provides a butterfly valve with a locking function.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a butterfly valve with a locking function, comprising a valve body, a valve plate rotatably connected in the valve body, a shaft rod fixedly connected to the top of the valve plate, the shaft rod passes through the valve body and is fixedly connected to a turning handle, the bottom of the turning handle is rotatably connected to a limit plate, a fixed side of the valve body is fixedly connected to multiple groups of arc plates, an arc groove is provided in the arc plate, and a limit component for resisting the limit plate is also provided on the outside of the turning handle.

[0007] By adopting the above technical solution, the valve body is connected to the pipeline, and then the turning handle and the limit plate are held, so that the limit plate is rotated and no longer engaged with the arc groove outside the arc plate, and then the turning handle is turned to drive the shaft rod to rotate, thereby driving the valve plate to rotate, so as to realize the opening or closing of the valve body; the limit plate is engaged in the arc groove of the arc plate again to form a limit fixation, thereby increasing the safety and stability of the valve body during operation.

[0008] The utility model is further configured as follows: a hinge seat is fixedly connected to the bottom of the turning handle, a pin shaft is rotatably connected in the hinge seat, and the limit plate is fixedly connected to the pin shaft.

[0009] By adopting the above technical solution, the limiting plate can be rotatably connected to the bottom of the handle.

[0010] The utility model is further configured as follows: the limiting assembly comprises a limiting rod rotatably connected to the outside of the hinge seat, a limiting shaft fixedly connected to the outside of the limiting rod, and a blocking rod rotatably connected to the outside of the limiting rod.

[0011] By adopting the above technical solution, the limit rod drives the limit shaft to contact the bottom of the limit plate, and at the same time, the blocking rod is rotated to make the blocking rod contact the top of the limit plate, thereby forming a limit resistance to the limit plate, so that the limit plate cannot be rotated upward or downward, thereby completing the limitation.

[0012] The utility model is further configured as follows: a blocking block is fixedly connected to the outside of the limiting rod, and the limiting plate is clamped between the limiting shaft and the blocking rod.

[0013] By adopting the above technical solution, the limiting plate can be locked in position.

[0014] The utility model is further configured as follows: a spring is connected between the limit plate and the turning handle.

[0015] By adopting the above technical solution and setting the spring, when the limit plate is loosened, the limit plate can be clamped in the arc groove under the pulling force of the spring.

[0016] The utility model is further configured as follows: a silicone suction cup is fixedly connected to the outside of the blocking block.

[0017] By adopting the above technical solution, the blocking rod can be adsorbed and fixed by the silicone suction cup.

[0018] The utility model is further configured as follows: a plurality of guide strips are fixedly connected to both sides of the exterior of the valve plate, and the guide strips are triangular structures.

[0019] By adopting the above technical solution, it is convenient to guide the water flow, and the guide groove formed between two adjacent guide strips can be used for water flow guidance.

[0020] The beneficial effect of the utility model is as follows: compared with the prior art, in the utility model, the valve body is connected to the pipeline, and then the turning handle and the limit plate are held, so that the limit plate is rotated and no longer engaged with the arc groove outside the arc plate, and then the turning handle is turned to drive the shaft rod to rotate, thereby driving the valve plate to rotate, thereby realizing the opening or closing of the valve body. Through the setting of the limit assembly, the limit plate can be firmly engaged, so the limitation is completed, thereby increasing the safety and stability of the valve body during operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a three-dimensional structural schematic diagram of the utility model;

[0022] Figure 2 yes Figure 1 Schematic diagram of the enlarged structure of the A area in the middle;

[0023] Figure 3 It is a structural schematic diagram of the utility model;

[0024] Figure 4 It is a structural schematic diagram of the valve plate in the utility model;

[0025] Figure 5 It is a structural schematic diagram of the limiting plate in the utility model;

[0026] Figure 6 It is a structural schematic diagram of the limiting rod in the utility model.

[0027] In the figure: 1. valve body; 2. valve plate; 3. guide strip; 4. turning handle; 5. limit plate; 6. shaft rod; 7. hinge seat; 8. arc groove; 9. limit rod; 10. limit shaft; 11. blocking rod; 12. blocking block; 13. arc plate. DETAILED DESCRIPTION

[0028] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0029] Example: As attached Figures 1 to 6 A butterfly valve with a locking function is shown, comprising a valve body 1, a valve plate 2 is rotatably connected inside the valve body 1, a shaft rod 6 is fixedly connected to the top of the valve plate 2, the shaft rod 6 passes through the valve body 1 and is fixedly connected to a turning handle 4, and the turning handle 4 is turned to drive the shaft rod 6 and the valve plate 2 to rotate, thereby completing the opening or closing operation.

[0030] As attached Figures 1 to 4As shown, in order to facilitate the water flow guidance, multiple sets of guide strips 3 are fixedly connected to both sides of the outside of the valve plate 2. The guide strips 3 are triangular structures, and the guide grooves formed between two adjacent guide strips 3 can be used for water flow guidance.

[0031] As attached Figures 5-6 As shown, a limit plate 5 is rotatably connected to the bottom of the turning handle 4, and a plurality of sets of arc plates 13 are fixedly connected to a fixed side of the valve body 1. An arc groove 8 is provided in the arc plate 13. When the limit plate 5 is engaged in the arc groove 8, the turning handle 4 can be locked so that the turning handle 4 cannot rotate.

[0032] As attached Figure 5 As shown, the bottom of the turning handle 4 is fixedly connected with a hinge seat 7, a pin is rotatably connected inside the hinge seat 7, and the limit plate 5 is fixedly connected to the pin.

[0033] As attached Figures 5-6 As shown, a limiting component for resisting the limiting plate 5 is also provided on the outside of the turning handle 4 .

[0034] As attached Figures 1 to 6 As shown, the limit assembly includes a limit rod 9 rotatably connected to the outside of the hinge seat 7, a limit shaft 10 fixedly connected to the outside of the limit rod 9, and a blocking rod 11 rotatably connected to the outside of the limit rod 9. The outside of the limit rod 9 is also fixedly connected with a blocking block 12, and the limit plate 5 is clamped between the limit shaft 10 and the blocking rod 11. The limit rod 9 is rotated to allow the limit rod 9 to drive the limit shaft 10 to contact the bottom of the limit plate 5. At the same time, the blocking rod 11 is rotated to allow the blocking rod 11 to contact the top of the limit plate 5, thereby forming a limit resistance to the limit plate 5, so that the limit plate 5 cannot be rotated upward or downward, thereby completing the limitation. In order to facilitate resetting, a spring is connected between the limit plate 5 and the turning handle 4, and a silicone suction cup is fixedly connected to the outside of the blocking block 12, and the silicone suction cup is used to adsorb the blocking rod 11.

[0035] In order for those skilled in the art to fully understand the technical solution, this embodiment is summarized as follows:

[0036] When in use, the valve body 1 is connected to the pipeline, and then the turning handle 4 and the limit plate 5 are held, and the limit plate 5 is rotated so as not to engage with the arc groove 8 outside the arc plate 13, and then the turning handle 4 is rotated to drive the shaft 6 to rotate, thereby driving the valve plate 2 to rotate, so as to realize the opening or closing of the valve body 1;

[0037] After the adjustment is completed, release the limit plate 5, and then under the tension of the spring, allow the limit plate 5 to be clamped in the arc groove 8 of the arc plate 13 again to form a limit fixation; then rotate the limit rod 9 to allow the limit rod 9 to drive the limit shaft 10 to contact the bottom of the limit plate 5, and at the same time rotate the blocking rod 11 to allow the blocking rod 11 to contact the top of the limit plate 5, thereby forming a limit resistance to the limit plate 5, so that the limit plate 5 cannot be rotated upward or downward, thereby completing the limitation.

[0038] In this way, the limiting plate 5 can be fixed in position, thereby increasing the safety and stability of the valve body 1 during operation.

[0039] In the present invention, terms such as "upper", "lower", "left", "right", "front", "back", "vertical", "horizontal", "side", "bottom" and the like indicating directions or positional relationships are based on the directions or positional relationships shown in the accompanying drawings. They are relational words determined only for the convenience of describing the structural relationships of the various parts or elements of the present invention, and do not specifically refer to any part or element in the present invention and cannot be understood as limitations on the present invention.

Claims

1. A butterfly valve with a locking function, comprising a valve body (1), characterized in that: A valve plate (2) is rotatably connected inside the valve body (1), a shaft (6) is fixedly connected to the top of the valve plate (2), the shaft (6) passes through the valve body (1) and is fixedly connected to a turning handle (4), the bottom of the turning handle (4) is rotatably connected to a limit plate (5), a fixed side of the valve body (1) is fixedly connected to a plurality of groups of arc plates (13), an arc groove (8) is provided in the arc plate (13), and a limit component for resisting the limit plate (5) is also provided on the outside of the turning handle (4).

2. A butterfly valve with locking function according to claim 1, characterized in that; The bottom of the turning handle (4) is fixedly connected to a hinge seat (7), a pin shaft is rotatably connected inside the hinge seat (7), and the limit plate (5) is fixedly connected to the pin shaft.

3. A butterfly valve with locking function according to claim 2, characterized in that; The limiting assembly comprises a limiting rod (9) rotatably connected to the outside of the hinge seat (7), a limiting shaft (10) fixedly connected to the outside of the limiting rod (9), and a blocking rod (11) rotatably connected to the outside of the limiting rod (9).

4. A butterfly valve with locking function according to claim 3, characterized in that; A blocking block (12) is also fixedly connected to the outside of the limiting rod (9), and the limiting plate (5) is clamped between the limiting shaft (10) and the blocking rod (11).

5. A butterfly valve with locking function according to claim 4, characterized in that; A spring is connected between the limit plate (5) and the turning handle (4).

6. A butterfly valve with locking function according to claim 5, characterized in that; A silicone suction cup is fixedly connected to the outside of the blocking block (12).

7. A butterfly valve with locking function according to claim 6, characterized in that: Multiple groups of guide strips (3) are fixedly connected to both sides of the exterior of the valve plate (2), and the guide strips (3) are of a triangular structure.

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