A handle type butterfly valve

Abstract

This utility model discloses a handle-type butterfly valve, including a valve body, a valve plate installed inside the valve body, and a boss integrally formed on the valve body. A valve stem fixed to the valve plate is rotatably connected inside the boss, and a handle is installed at the upper end of the valve stem. It also includes a limiting component for limiting the angle of the handle. In this utility model, a pressure plate is provided inside the handle for adjusting the angle of the valve plate. The handle can only be unlocked and rotated after the operator presses the pressure plate, preventing accidental rotation of the handle. Furthermore, this utility model achieves locking through the cooperation of movable and fixed teeth, and the horizontal plate supporting the movable teeth is easy to disassemble and replace, reducing maintenance costs. This utility model also includes a insert plate, which can limit the angle of the pressure plate relative to the handle and disable the limiting component, facilitating valve plate adjustment.

Description

Technical Field

[0001] This utility model relates to the field of butterfly valve technology, and in particular to a handle-type butterfly valve. Background Technology

[0002] The butterfly valve is a simple and widely used regulating valve. Its core closing component is a disc-shaped valve plate, which rotates around the valve shaft to open and close the pipeline and regulate the flow.

[0003] The component used to control the valve plate in a butterfly valve is generally a handwheel. The handwheel is usually connected to the valve shaft through a reduction gear assembly. This means that the handwheel needs to be rotated multiple times to adjust the flow rate of the butterfly valve. To simplify this process, a handle-type butterfly valve, as disclosed in application number 202121783075.3, exists on the market. This butterfly valve adjusts the angle of the valve plate by rotating the handle. However, in this butterfly valve, the limit rod is directly connected to the toothed pressure plate. If the operator rotates the handle without pressing the limit plate, the connection between the end of the limit rod and the toothed pressure plate can easily break off. In this case, the limit rod needs to be replaced as a whole, which is costly and complicated. Therefore, an improvement is needed. Utility Model Content

[0004] To address the shortcomings of existing technologies, this utility model provides a handle-type butterfly valve to solve the problems mentioned in the background section.

[0005] This utility model provides the following technical solution: a handle-type butterfly valve, including a valve body, a valve plate installed inside the valve body, and a boss integrally formed on the valve body. A valve rod fixed to the valve plate is rotatably connected inside the boss. A handle is installed at the upper end of the valve rod. It also includes a limiting component for limiting the angle of the handle.

[0006] The limiting component includes a mounting groove provided in the bottom surface of the handle, a pressure plate is hinged in the mounting groove, a mounting platform is integrally formed on the lower side of the pressure plate, a horizontal plate is mounted on the lower end of the mounting platform, and an upwardly extending movable tooth is fixed on the horizontal plate. A toothed ring is fixed on the upper end of the boss, and a plurality of fixed teeth that can cooperate with the movable tooth are integrally formed on the outer curved surface of the toothed ring.

[0007] Preferably, the lower side of the fixed tooth and its two vertical sides are chamfered to form a first inclined surface, and a second inclined surface adapted to the position of the first inclined surface is machined on the upper side of the movable tooth.

[0008] Preferably, a spring is connected between the upper side of the pressure plate and the bottom surface of the mounting groove.

[0009] Preferably, a protruding plate is integrally formed on the side of the lower side of the pressure plate away from the boss.

[0010] Preferably, it further includes a locking component, the locking component including a plate that is laterally slidably connected within the handle and extends into the mounting groove, the protruding plate having a slot for receiving the plate.

[0011] Preferably, the upper side of the horizontal plate is provided with a slot, the mounting platform is inserted downward into the slot, and the horizontal plate is connected to the mounting platform by fasteners.

[0012] Preferably, multiple movable teeth are mounted on the cross plate, and multiple movable teeth are distributed at equal angles around the axis of the gear ring.

[0013] This utility model provides a handle-type butterfly valve, which has the following advantages:

[0014] In this utility model, a pressure plate is provided inside the handle used to adjust the angle of the valve plate. The operator can only unlock and rotate the handle after pressing the pressure plate to avoid accidental rotation of the handle. In addition, this utility model achieves locking through the cooperation of movable teeth and fixed teeth, and the horizontal plate used to support the movable teeth is easy to disassemble and replace to reduce maintenance costs.

[0015] This utility model also includes an insert plate, which can limit the angle of the pressure plate relative to the handle and disable the limiting component, so as to facilitate the adjustment of the valve plate. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the appearance of this utility model;

[0017] Figure 2 yes Figure 1 A schematic diagram of the appearance of the middle horizontal plate;

[0018] Figure 3 yes Figure 1 Enlarged diagram of point A in the middle.

[0019] In the picture:

[0020] 11. Valve body; 12. Valve plate; 13. Boss; 15. Handle; 21. Pressure plate; 22. Mounting platform; 23. Movable tooth; 24. Gear ring; 25. Fixed tooth; 26. Protruding plate; 31. Insert plate; 32. Slot; 41. Horizontal plate; 42. Slot. Detailed Implementation

[0021] The embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, and should not be construed as limiting the present invention.

[0022] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0023] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this utility model, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0024] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between them; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0025] Reference Figures 1-3 According to an embodiment of the present invention, a handle-type butterfly valve includes a valve body 11, a valve plate 12 is installed inside the valve body 11, a boss 13 is integrally formed on the valve body 11, and a valve stem fixed to the valve plate 12 is rotatably connected inside the boss 13. A handle 15 is installed at the upper end of the valve stem, and a limiting component for limiting the angle of the handle 15 is also included. The operator can drive the valve stem and the valve plate 12 to rotate through the handle 15, thereby controlling the valve body 11 to open and close. The limiting component can limit the angle of the handle 15 after the angle is adjusted, preventing it from being touched and rotated, and preventing the valve plate 12 from being deflected by the medium.

[0026] like Figure 1 and Figure 3As shown, the limiting component includes a mounting groove provided in the bottom surface of the handle 15, a pressure plate 21 is hinged in the mounting groove, a mounting platform 22 is integrally formed on the lower side of the pressure plate 21, a horizontal plate 41 is mounted on the lower end of the mounting platform 22, and an upwardly extending movable tooth 23 is fixed on the horizontal plate 41. A toothed ring 24 is fixed on the upper end of the boss 13, and a plurality of fixed teeth 25 that can cooperate with the movable tooth 23 are integrally formed on the outer curved surface of the toothed ring 24.

[0027] In this embodiment, the locking method is that the movable tooth 23 is inserted upward into the gap within the fixed tooth 25. When it is necessary to unlock to adjust the angle of the handle 15 and the valve plate 12, the operator presses the pressure plate 21 inward. At this time, the right end of the pressure plate 21 moves upward and the left end moves downward, thereby causing the movable tooth 23 to disengage from the fixed tooth 25. At this time, the handle 15 can rotate. After adjustment, since a spring connects the upper side of the pressure plate 21 to the bottom surface of the mounting groove, the pressure plate 21 will reset its angle relative to the handle 15, and the movable tooth 23 will re-insert into the gap between the fixed teeth 25. In addition, if the pressure plate 21 is rotated without being pressed, the movable tooth 23 may be deformed or broken. In this case, the operator only needs to replace the horizontal plate 41.

[0028] The specific fixing method between the horizontal plate 41 and the mounting platform 22 is as follows: the upper side of the horizontal plate 41 is provided with a slot 42, the mounting platform 22 is inserted downward into the slot 42, and the horizontal plate 41 is connected to the mounting platform 22 by fasteners to facilitate disassembly and assembly.

[0029] In addition, multiple movable teeth 23 are mounted on the cross plate 41, and multiple movable teeth 23 are distributed at equal angles around the axis of the toothed ring 24, so as to reduce the probability of breakage and deformation of the movable teeth 23 and improve the locking ability.

[0030] Furthermore, the lower side of the fixed tooth 25 is chamfered with its two vertical sides to form a first inclined surface, and the upper side of the movable tooth 23 is machined with a second inclined surface that matches the position of the first inclined surface. With this setting, even if the pressure plate 21 is not pressed into place, so that the movable tooth 23 is not completely disengaged from the fixed tooth 25, the handle 15 can still be rotated to avoid damage to the movable tooth 23 and the fixed tooth 25. Moreover, this setting facilitates the movable tooth 23 to slide into the fixed tooth 25, and minimizes the possibility that the movable tooth 23 will abut against the lower end face of the fixed tooth 25 when the user stops pressing the pressure plate 21.

[0031] In order to facilitate the staff to press the pressure plate 21, a protruding plate 26 is integrally formed on the side of the lower side of the pressure plate 21 away from the boss 13. The staff can press the pressure plate 21 inward through the protruding plate 26 so that the movable tooth 23 can be completely disengaged from the fixed tooth 25.

[0032] Furthermore, in a second embodiment of the handle-type butterfly valve, a locking component is also included. The locking component includes a plate 31 that is laterally slidably connected within the handle 15 and extends into the mounting groove. The protruding plate 26 has a slot 32 for accommodating the plate 31. That is, when the pressure plate 21 is snapped into the mounting groove and the movable tooth 23 disengages from the fixed tooth 25, the operator can press the plate 31 inward, causing the plate 31 to insert into the slot 32. At this time, the angle of the pressure plate 21 relative to the handle 15 is locked, and the limiting component is disabled, which facilitates the operator to switch the valve back and forth and allows operators with less strength to perform gradual adjustments.

[0033] It should be noted that the spring is not necessary, and the pressure plate 21 can automatically reset through the offset design of the center of gravity.

[0034] The boss 13 is also designed with a sealing element to prevent water leakage;

[0035] The toothed ring 24 can be a semi-toothed ring, and the fixed teeth 25 can also reduce the distribution area to reduce production costs and equipment weight.

[0036] The upper side of the pressure plate 21 and its right end face are rounded or chamfered to avoid interference from the insert plate 31 when it is pressed inward. The insert plate 31 will remain stationary under the action of friction when it is inserted into the slot 32.

[0037] These are all standard settings in existing technology and will not be described in detail here.

[0038] The above description is only a specific embodiment of the present utility model, but the technical features of the present utility model are not limited thereto. Any changes or modifications made by those skilled in the art within the scope of the present utility model are covered by the patent scope of the present utility model.

Claims

1. A handle-type butterfly valve, comprising a valve body (11), characterized in that: The valve body (11) contains a valve plate (12), and a boss (13) is integrally formed on the valve body (11). A valve rod fixed to the valve plate (12) is rotatably connected inside the boss (13). A handle (15) is installed at the upper end of the valve rod. The valve body (11) also includes a limiting component for limiting the angle of the handle (15). The limiting component includes a mounting groove located in the bottom surface of the handle (15), a pressure plate (21) is hinged in the mounting groove, a mounting platform (22) is integrally formed on the lower side of the pressure plate (21), a horizontal plate (41) is mounted on the lower end of the mounting platform (22), and an upwardly extending movable tooth (23) is fixed on the horizontal plate (41). A toothed ring (24) is fixed on the upper end of the boss (13), and a plurality of fixed teeth (25) that can cooperate with the movable tooth (23) are integrally formed on the outer curved surface of the toothed ring (24).

2. The handle-type butterfly valve according to claim 1, characterized in that: The lower side of the fixed tooth (25) is chamfered with its two vertical sides to form a first inclined surface, and the upper side of the movable tooth (23) is machined with a second inclined surface that is adapted to the position of the first inclined surface.

3. A handle-type butterfly valve according to claim 1, characterized in that: A spring is connected between the upper side of the pressure plate (21) and the bottom surface of the mounting groove.

4. A handle-type butterfly valve according to claim 1, characterized in that: The lower side of the pressure plate (21) away from the boss (13) has an integrally formed protrusion plate (26).

5. A handle-type butterfly valve according to claim 4, characterized in that: It also includes a locking assembly comprising a insert plate (31) that is laterally slidably connected within the handle (15) and extends into the mounting groove, wherein the protruding plate (26) has a slot (32) for receiving the insert plate (31).

6. A handle-type butterfly valve according to claim 1, characterized in that: The upper side of the horizontal plate (41) is provided with a slot (42), the mounting platform (22) is inserted downward into the slot (42), and the horizontal plate (41) is connected to the mounting platform (22) by fasteners.

7. A handle-type butterfly valve according to claim 1, characterized in that: Multiple movable teeth (23) are mounted on the horizontal plate (41), and multiple movable teeth (23) are distributed at equal angles with the axis of the toothed ring (24) as the center.

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