A ball valve

Abstract

This utility model provides a ball valve, belonging to the field of valve technology. It solves the problem of limited application scenarios for existing ball valves. This ball valve includes a valve body, a valve core, a valve stem, and a long, narrow handle. The upper side of the valve body has a neck. One end of the handle is sleeved on the outer side of the upper end of the valve stem and detachably connected to the valve stem. The lower side of one end of the handle has two downward-protruding limiting parts, namely, a first limiting part and a second limiting part. The first and second limiting parts are distributed along the length of the handle and are located on the left and right sides of the aforementioned neck, respectively. The right side of the neck has a protruding, block-shaped protrusion, and the front side of the neck has a protruding, block-shaped protrusion, the second protrusion. When the handle swings back and forth around the axis of the valve stem, the second limiting part can move around the axis of the valve stem to abut against the side of either the first or the second protrusion. This ball valve has the advantage of a wide range of applications.

Description

Technical Field

[0001] This utility model belongs to the field of valve technology and relates to a ball valve. Background Technology

[0002] Ball valves are a common type of valve. Their structure generally includes a valve body, a spherical valve core housed within the valve body, a rod-shaped valve stem, and a handle. The inner end of the valve stem extends into the valve body and is circumferentially fixed to the valve core, while the outer end extends out of the valve body and is fixed to the handle. In use, the handle rotates circumferentially around the axis of the valve stem, which in turn drives the spherical valve core to rotate circumferentially, controlling the opening and closing of the water outlet channel within the valve body, thereby controlling the water circuit and flow rate.

[0003] For example, a long-life ball valve has been designed and a Chinese patent has been applied for, with application number 201810211082.2 and publication number CN108506516B. The long-life ball valve includes a valve body, a valve core, a valve stem, and a handle. A drive plate is fixed on the valve stem, and a drive groove is formed on the drive plate. The two ends of the drive groove are at different distances from the valve stem axis. A sleeve is slidably arranged inside the valve body, and a sealing ring is provided on the end face of the sleeve facing the valve core. A drive rod is provided on the sleeve and passes through the drive groove. When the ball valve moves from the open state to the closed state, the drive plate drives the drive rod to slide through the drive groove, so that the sleeve drives the sealing ring to press against the valve core.

[0004] In this long-life ball valve, the handle is a long strip-shaped handle, with one end sleeved on the outer side of the valve stem and fixed. The handle has a long gripping range and can form a force-saving lever, which facilitates the user's operation.

[0005] The handle has two downward-protruding limiting parts at its bottom, which are approximately 90 degrees apart around the valve stem axis. The outer side of the valve body has a protruding, block-like protrusion located within the 90-degree angled area between the two limiting parts. During use, the handle can swing horizontally back and forth within a 90-degree range relative to the valve body around the valve stem axis, causing the protrusion to abut against the sides of the two limiting parts. The protrusion limits the angular position of the handle, thereby positioning the valve core within the valve body in its fully open and fully closed positions, preventing over-rotation and facilitating user operation.

[0006] In actual production, to facilitate the identification of the water supply status, the two extreme positions of the handle are relatively fixed: one is when the length direction of the handle is consistent with the water outlet direction of the valve body, which is considered the fully open state; the other is when the length direction of the handle is perpendicular to the water outlet direction of the valve body, which is considered the fully closed state. However, when the ball valve is installed against a wall, the wall's limitations can easily prevent the handle from rotating to a position perpendicular to the water outlet direction of the valve body, thus preventing the ball valve from opening and closing properly and restricting its application. Utility Model Content

[0007] The purpose of this invention is to address the aforementioned problems in the existing technology by proposing a ball valve that solves the problem of limited application scenarios for existing ball valves.

[0008] The objective of this utility model can be achieved through the following technical solutions: A ball valve includes a valve body, a spherical valve core disposed within the valve body, a vertically arranged rod-shaped valve stem, and a long handle. The left side of the valve body is the inlet end, and the right side of the valve body is the outlet end. The upper side of the valve body has an upwardly protruding cylindrical neck. The lower end of the valve stem extends into the valve body and is circumferentially fixed to the valve core. The upper end of the valve stem protrudes from the neck. One end of the handle is sleeved on the outside of the upper end of the valve stem and is detachably connected to the valve stem. The handle has two downwardly protruding limiting parts, namely, a first limiting part and a second limiting part. The first limiting part and the second limiting part are distributed along the length of the handle and are located on the left and right sides of the neck, respectively. The right side of the neck has a protruding block-shaped protrusion, and the front side of the neck has a protruding block-shaped protrusion. When the handle swings back and forth around the axis of the valve stem, the second limiting part can move around the axis of the valve stem to abut against the side of either the first or the second protrusion.

[0009] In its initial state, the handle mounted on the valve stem runs horizontally, with the other end positioned above the outlet on the right side of the valve body, aligning with the outlet direction for easy installation. The first protrusion on the right side of the valve body neck and the second protrusion on the front side are distributed at approximately a 90-degree angle along the circumference of the neck. At this time, the second limiting part is located on the right side of the neck within the aforementioned 90-degree angle, abutting against one side of the protrusion. To switch the outlet state, the handle swings forward around the valve stem axis until the second limiting part abuts against the side of the second protrusion on the front side of the neck. This completes the outlet state switch, and the handle's length is perpendicular to the outlet direction of the valve body. If the ball valve is installed in front of a wall or other obstruction, preventing the handle from swinging forward, remove the handle. Without removing the valve body, rotate the handle horizontally 180 degrees, ensuring one end of the handle is still fitted onto the outside of the upper end of the valve stem and secured. In this case, the handle's length remains horizontal, but the other end is positioned above the inlet on the left side of the valve body. Because limiting parts one and two are distributed along the length of the handle and located on both sides of the neck, roughly 180 degrees around the valve stem axis, when the handle is turned, limiting part one engages within the 90-degree angle area between protrusion one and protrusion two, and abuts against the side of the protrusion on the right. When switching the water outlet state, limiting part one swings forward around the valve stem axis until it abuts against the side of protrusion two on the front of the neck. At the same time, the other end of the handle swings backward around the valve stem axis, offsetting the position in front of the valve body, thus avoiding interference from obstructions in front of the valve body that would prevent switching the water outlet state.

[0010] In this ball valve, the setting of limiting part one and limiting part two distributed along the length of the handle, together with the setting of protrusion one and protrusion two, allows the detachable handle to be adjusted in installation direction according to the actual installation environment. This avoids the situation where the valve body has to be removed or the handle has to be replaced due to obstruction on one side of the ball valve, which facilitates the installation of the ball valve and improves the applicability of the long-handle ball valve.

[0011] In one type of ball valve described above, the upper end of the valve stem is flat, and a slotted hole is vertically oriented through the handle. The upper end of the valve stem passes through the slotted hole, and the ball valve also includes a nut threaded onto the outer side of the upper end of the valve stem. The fit between the flat upper end of the valve stem and the slotted hole achieves circumferential fixation of the valve stem and handle, while the screwing in of the nut achieves axial fixation of the valve stem and handle.

[0012] In the ball valve described above, both the first and second limiting parts are elongated and vertically arranged. The elongated shape of the first and second limiting parts provides a larger vertical dimension, facilitating their contact with the first and second protrusions.

[0013] Compared with existing technologies, this ball valve utilizes the setting of limiting part one and limiting part two distributed along the length of the handle, along with the setting of protrusion one and protrusion two, to allow the detachable handle to be adjusted in installation direction according to the actual installation environment. This avoids the situation where the valve body has to be removed or the handle replaced due to obstruction on one side of the ball valve, thus facilitating the installation of the ball valve and improving the applicability of the long-handle ball valve. Attached Figure Description

[0014] Figure 1 This is an exploded view of the ball valve.

[0015] Figure 2 This is a schematic diagram of the ball valve in its initial state.

[0016] Figure 3 This is a schematic diagram of the structure of the ball valve after switching the water outlet state.

[0017] Figure 4 This is a schematic diagram of the initial state of the ball valve after the handle has been adjusted to the installation direction.

[0018] Figure 5 This is a schematic diagram of the structure of this ball valve, showing how the water outlet state is switched after the handle is adjusted to the installation direction.

[0019] In the diagram, 1. Valve body; 11. Inlet; 12. Outlet; 13. Neck; 14. Protrusion 1; 15. Protrusion 2; 2. Valve core; 3. Valve stem; 4. Handle; 41. Limiting part 1; 42. Limiting part 2; 43. Waist-shaped hole; 5. Nut. Detailed Implementation

[0020] The following are specific embodiments of the present invention, which are described in conjunction with the accompanying drawings. However, the present invention is not limited to these embodiments.

[0021] like Figure 1As shown, this ball valve includes a valve body 1, a spherical valve core 2 disposed within the valve body 1, a vertically arranged cylindrical valve stem 3, and a long handle 4. The left side of the valve body 1 is the inlet end 11, and the right side of the valve body 1 is the outlet end 12. The upper side of the valve body 1 has an upwardly protruding cylindrical neck 13, on which a ring-shaped pressure cap is internally threaded, and the upper end of the pressure cap extends out of the neck 13. The lower end of the valve stem 3 extends into the valve body 1 and is circumferentially fixed to the valve core 2. The upper end of the valve stem 3 protrudes from the neck 13 and the pressure cap. One end of the handle 4 is sleeved on the outside of the upper end of the valve stem 3 and is detachably connected to the valve stem 3. In this embodiment, the upper end of the valve stem 3 is flat and has external threads on both sides along the length of the upper end of the valve stem 3. The handle 4 has a waist-shaped hole 43 that runs through it in the vertical direction and the length of the waist-shaped hole 43 is consistent with the length of the handle 4. The upper end of the valve stem 3 passes through the waist-shaped hole 43. The ball valve also includes a nut 5 that is threaded to the outer side of the upper end of the valve stem 3. When the nut 5 is screwed down, it can press the lower side of the handle 4 tightly against the upper end surface of the pressure cap, thereby fixing the handle 4 and the valve stem 3 relatively.

[0022] The lower side of one end of the handle 4 has a first limiting part 41 and a second limiting part 42 that both protrude downwards in the shape of a long strip. The first limiting part 41 and the second limiting part 42 are distributed along the length of the handle 4 and are located on the left and right sides of the neck 13, respectively. The right side of the neck 13 has a first protrusion 14 that protrudes in the shape of a block, and the front side of the neck 13 has a second protrusion 15 that protrudes in the shape of a block. That is, the first protrusion 14 and the second protrusion 15 are distributed at approximately 90 degrees around the axis of the valve stem 3. Here, approximately 90 degrees means that the side of the first protrusion 14 and the second protrusion 15 facing each other, that is, the side side against which the second limiting part 42 rests, are both planes and these two planes are distributed at 90 degrees around the axis of the valve stem 3. The included angle formed by the center positions of the first protrusion 14 and the second protrusion 15 is slightly greater than 90 degrees. When the handle 4 swings back and forth around the axis of the valve stem 3, the limiting part 42 can move around the axis of the valve stem 3 to abut against the plane of the side of the protrusion 14 or the protrusion 15.

[0023] like Figure 2 As shown, in the initial state, the handle 4 mounted on the valve stem 3 is oriented left-right along its length. The other end of the handle 4 is located above the outlet end 12 on the right side of the valve body 1, which is consistent with the outlet direction of the valve body 1, facilitating installation and connection. At this time, the second limiting part 42 is located on the right side of the neck 13 and within the 90-degree area between the first protrusion 14 and the second protrusion 15. The right side of the second limiting part 42 abuts against the left side of the first protrusion 14. The first limiting part 41 is separated by the first protrusion 14 and the second protrusion 15 into another area in the circumferential direction, i.e., within the 270-degree angle area, and therefore does not function.

[0024] like Figure 3As shown, when it is necessary to switch the water outlet state, the handle 4 swings forward around the axis of the valve stem 3 until the left side of the limiting part 42 abuts against the right side of the protrusion 15 located in front of the neck 13. At this time, the water outlet state switching is completed, and the length direction of the handle 4 is perpendicular to the water outlet direction of the valve body 1.

[0025] like Figure 4 As shown, when the ball valve is installed in front of a wall or other obstruction, preventing the handle 4 from swinging forward, unscrew the nut 5, remove the handle 4 upwards without disassembling the valve body 1 connected to the pipeline, and rotate the handle 4 horizontally 180 degrees so that the oblong hole 43 is re-fitted onto the outer side of the upper end of the valve stem 3 in a 180-degree direction, and then tighten the nut 5 again. At this time, the length direction of the handle 4 is still left-right, but the other end of the handle 4 is located above the water inlet end 11 on the left side of the valve body 1. Because the first limiting part 41 and the second limiting part 42 are distributed along the length direction of the handle 4 and are located on both sides of the neck 13, that is, the first limiting part 41 and the second limiting part 42 are distributed approximately 180 degrees around the axis of the valve stem 3. After the handle 4 is rotated 180 degrees, the limiting part 41 is engaged in the 90-degree angle area between the protrusion 14 and the protrusion 15, and the right side of the limiting part 41 abuts against the left side of the protrusion 14 on the right side, while the limiting part 42 is replaced in the area where the original limiting part 41 was located and does not function.

[0026] like Figure 5 As shown, when it is necessary to switch the water outlet state, the limiting part 41 swings forward around the axis of the valve stem 3 until it abuts against the right side of the protrusion 15 on the front side of the neck 13. At the same time, the other end of the handle 4 swings backward around the axis of the valve stem 3, offsetting the position in front of the valve body 1, thus avoiding the situation where the water outlet state cannot be switched due to interference from the obstruction in front of the valve body 1.

[0027] The specific embodiments described herein are merely illustrative examples illustrating the spirit of this utility model. Those skilled in the art to which this utility model pertains may make various modifications or additions to the described specific embodiments or use similar methods to substitute them, without departing from the spirit of this utility model or exceeding the scope defined by the appended claims.

Claims

1. A ball valve, comprising a valve body (1), a spherical valve core (2) disposed within the valve body (1), a vertically arranged rod-shaped valve stem (3), and a long handle (4), wherein the left side of the valve body (1) is an inlet end (11), the right side of the valve body (1) is an outlet end (12), the upper side of the valve body (1) has an upwardly protruding cylindrical neck (13), the lower end of the valve stem (3) extends into the valve body (1) and is circumferentially fixed to the valve core (2), the upper end of the valve stem (3) protrudes from the neck (13), and one end of the handle (4) is sleeved on the outer side of the upper end of the valve stem (3) and detachably connected to the valve stem (3), characterized in that, The lower side of one end of the handle (4) has a limiting part one (41) and a limiting part two (42) that both protrude downwards. The limiting part one (41) and the limiting part two (42) are distributed along the length direction of the handle (4) and are located on the left and right sides of the neck (13). The right side of the neck (13) has a protruding block-shaped protrusion one (14), and the front side of the neck (13) has a protruding block-shaped protrusion two (15). When the handle (4) swings back and forth around the axis of the valve stem (3), the limiting part two (42) can move around the axis of the valve stem (3) to abut against the side of the protrusion one (14) or the protrusion two (15).

2. A ball valve according to claim 1, wherein The upper end of the valve stem (3) is flat, and the handle (4) has a waist-shaped hole (43) that runs through it in the vertical direction. The upper end of the valve stem (3) passes through the waist-shaped hole (43).

3. A ball valve according to claim 2, wherein The ball valve also includes an annular nut (5), which is located above the handle (4) and threaded to the outer side of the upper end of the valve stem (3).

4. A ball valve according to claim 1 or 2 or 3, wherein Both the first limiting part (41) and the second limiting part (42) are elongated and vertically arranged.

5. A ball valve according to claim 1 or 2 or 3, wherein The front side of the first protrusion (14) and the right side of the second protrusion (15) are both flat.

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