Water supply pipeline throttle valve

Abstract

The present invention discloses a throttle valve for a water supply pipeline, which comprises a valve body, wherein a handwheel is arranged on an output shaft at the upper end of the valve body, and is characterized in that an anti-rotation device is arranged on the handwheel, which comprises an anti-rotation sleeve, a rolling ball and a buffer spring, an anti-rotation track is arranged circumferentially on the outer circumference of the handwheel, the anti-rotation sleeve is sleeved on the outside of the handwheel, blind holes are arranged at intervals on the circumference of the inner wall of the anti-rotation sleeve, a buffer spring and a rolling ball are arranged in the blind holes, and the rolling ball is rollingly connected to the anti-rotation track under the action of the buffer spring, and when the anti-rotation sleeve outside the handle on the throttle valve is touched, the anti-rotation sleeve rotates circumferentially along the anti-rotation track under the action of the rolling ball, thereby preventing the handle from being touched by an external object or a person and causing a change in the opening. Due to the adoption of the above structure, the present invention has the advantages of simple structure, prevention of misrotation of the throttle valve, and convenient inspection.

Description

Technical Field

[0001] Water supply pipeline throttle valve Technical Field

[0003] The invention relates to the technical field of water supply systems, in particular to a throttle valve for a water supply pipeline. Background Art

[0004] Currently, there is no opening indication on the throttle valve body, and the opening of the throttle valve is reflected by the flow meter on the water supply pipeline. The opening of the throttle valve is easily touched by mistake, causing the opening to change. When the water flow is low, it is impossible to accurately determine whether the low flow is caused by the change in the throttle valve opening or other reasons. Summary of the invention

[0005] The purpose of the present invention is to solve the deficiencies of the prior art and provide a water supply pipeline throttle valve which has a simple structure and can avoid misrotation of the throttle valve.

[0006] The technical solution adopted by the present invention to solve its technical problem is:

[0007] A throttle valve for a water supply pipeline comprises a valve body, a handwheel is provided on an output shaft at the upper end of the valve body, and the feature is that the handwheel is provided with an anti-rotation device, which comprises an anti-rotation sleeve, a rolling ball and a buffer spring, an anti-rotation track is provided circumferentially on the outer periphery of the handwheel, the anti-rotation sleeve is sleeved on the outside of the handwheel, blind holes are provided at intervals on the circumference of the inner wall of the anti-rotation sleeve, a buffer spring and a rolling ball are provided in the blind holes, the rolling ball is rollingly connected to the anti-rotation track under the action of the buffer spring, and when the anti-rotation sleeve outside the handle on the throttle valve is touched, the anti-rotation sleeve rotates circumferentially along the anti-rotation track under the action of the rolling ball, thereby preventing the opening from changing due to the touch of the handle by external objects or people.

[0008] The present invention can provide an opening indicating device on the valve body, which includes a bracket and a pointer. The axial linear array on the smooth rod section on the upper part of the threaded section of the rotating shaft of the valve body is provided with opening scale concave lines and opening concave digital lines. The opening scale concave lines are annular and surround the circumference of the rotating shaft. The lower end of the bracket is fixedly connected to the valve body via the pin, and one side of the upper end is vertically fixedly connected to the pointer. The needle tip of the pointer is opposite to the rotating shaft. The opening of the valve body can be known by the opening scale concave lines and the opening concave digital lines corresponding to the pointer.

[0009] The pointer and the bracket of the present invention are formed by bending metal wires. The lower end of the bracket is wound into a ring and a pin passes through the ring to fix the ring on the valve body.

[0010] The present invention has the advantages of simple structure, avoiding misrotation of the throttle valve, and convenient inspection due to the adoption of the above structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1It is a structural schematic diagram of an embodiment of the present invention.

[0012] Figure 2 It is a structural schematic diagram of another embodiment of the present invention.

[0013] Reference numerals: valve body 1, hand wheel 2, anti-rotation sleeve 3, rolling ball 4, buffer spring 5, anti-rotation track 6, bracket 7, pointer 8, opening scale concave line 9, rotating shaft 10, opening concave digital line 11. DETAILED DESCRIPTION

[0014] The present invention is described below in conjunction with the accompanying drawings and embodiments.

[0015] As shown in the accompanying drawings, a throttle valve for a water supply pipeline includes a valve body 1. The structure of the valve body is the same as that of the prior art and is not described in detail. An annular handwheel 2 is provided on the output shaft at the upper end of the valve body 1, and the feature is that an anti-rotation device is sleeved on the handwheel 2, which includes an anti-rotation sleeve 3, a ball 4 and a buffer spring 5. An anti-rotation track 6 is circumferentially provided on the outer periphery of the handwheel 2. The anti-rotation sleeve 3 is sleeved on the outside of the handwheel 2. Blind holes are provided at intervals on the inner wall of the anti-rotation sleeve 3. Buffer springs 5 ​​and balls 4 are provided in the blind holes. The balls 4 are rollingly connected to the anti-rotation track under the action of the buffer spring 5. When the anti-rotation sleeve outside the handle on the throttle valve is touched, the anti-rotation sleeve rotates circumferentially along the anti-rotation track under the action of the ball, thereby preventing the opening from changing due to external objects or people touching the handle.

[0016] The present invention can be provided with an opening indicating device on the valve body, which includes a bracket 7 and a pointer 8. The axial linear array on the smooth rod section at the upper part of the threaded section of the rotating shaft 10 of the valve body is provided with an opening scale concave line 9 and an opening concave digital line 11. The opening scale concave line 9 is annular and surrounds the circumference of the rotating shaft 10. The lower end of the bracket 7 is fixedly connected to the valve body 1 via a pin, and one side of the upper end is vertically fixedly connected to the pointer 8. The pointer and the bracket of the present invention are formed by bending metal wire. The lower end of the bracket is wound into a ring and the ring is fixed to the valve body via a pin. The needle tip of the pointer 8 is opposite to the rotating shaft 10. The opening of the valve body can be known by the opening scale concave line and the opening concave digital line corresponding to the pointer 8. The opening concave digital lines of the present invention are 0°, 30°, 60°, and 90° from bottom to top, respectively. 0° represents a fully closed state, 30° and 60 degrees represent opening to a certain angle, and 90° represents a fully open state.

[0017] During use of the present invention, the hand wheel of the throttle valve is rotated. When the throttle valve is in an initial state, the pointer corresponds to 0°. When the operator opens the throttle valve to 30° or 60° according to the required flow rate, the throttle valve is rotated downward so that the pointer is aligned with the opening scale concave line of 30° or 60°, and then the anti-rotation device is put on.

[0018] If the anti-rotation sleeve outside the handle on the throttle valve is touched, the anti-rotation sleeve will rotate circumferentially along the anti-rotation track under the action of the rolling ball, thereby preventing external objects or people from touching the handle and causing the opening to change.

[0019] If you want to know the opening size and flow rate of the throttle valve, you only need to check the opening concave digital line corresponding to the opening scale concave line on the rotating shaft corresponding to the pointer to quickly know the opening size and flow rate.

[0020] The present invention has the advantages of simple structure, avoiding misrotation of the throttle valve, and convenient inspection due to the adoption of the above structure.

Claims

1. A water supply pipeline throttle valve, comprising a valve body, wherein a hand wheel is arranged on the output shaft at the upper end of the valve body, characterized in that The handwheel is provided with an anti-rotation device, which includes an anti-rotation sleeve, a rolling ball and a buffer spring. An anti-rotation track is provided circumferentially on the outer circumference of the handwheel. The anti-rotation sleeve is sleeved on the outside of the handwheel. Blind holes are provided at intervals on the circumference of the inner wall of the anti-rotation sleeve. Buffer springs and rolling balls are provided in the blind holes. The rolling balls are rollingly connected to the anti-rotation track under the action of the buffer spring.

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