Low-torque self-sealing fire hydrant

A low-torque, fire hydrant technology, applied in fire rescue, etc., can solve the problems of easy vibration, water hammer, fire hydrant damage, etc., and achieve the effect of reducing the overall vibration

CN104548452AActive Publication Date: 2015-04-29NINGJIN MEIHUA IND
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Publication Date
2015-04-29

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Abstract

The invention relates to a low-torque self-sealing fire hydrant. The fire hydrant comprises a hydrant body, wherein the hydrant body is provided with an inlet water interface, a tray is fixedly arranged near the inlet water interface, a valve shaft is inserted in the tray, and the valve shaft is connected with a valve base by virtue of a thread; the outer side of the valve base is arranged in a guide cylinder, the inner wall of the valve base is provided with a unidirectional valve used for enabling fluid to flow to outside of the valve base from the inside of the valve base, the cylinder wall of the guide cylinder is provided with a through hole communicated with the outside, and by virtue of rotating the valve shaft, the valve base is away from or close to the tray, so as to open or close the inlet water interface. The fire hydrant is used for realizing the on and off of the fluid and flow regulation, a big torque caused by the high pressure is reduced during opening, and whole dithering caused by the impacting of the high-pressure fluid on the parts is decreased; and when the fire hydrant is closed, the part damage caused by a water hammer formed by pressure fusion is alleviated.
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Description

technical field

[0001] The invention relates to fire fighting equipment, in particular to a low-torque self-sealing fire hydrant. Background technique

[0002] At present, the disadvantages of fire hydrants on the market are that the force bearing area of ​​the seal is large, and the guide of the moving seal is short. When opening, the torque is particularly large, and the pressure on both sides of the seal changes greatly, which is prone to vibration; when closing, it is easy to generate water hammer, which will damage the fire hydrant; once the above-ground part is accidentally damaged after closing, due to the short guide of the moving seal And inclined, so that the seal failure. Contents of the invention

[0003] The object of the present invention is to solve the above technical problems and provide a low-torque self-sealing fire hydrant.

[0004] To achieve the above object, the technical solution of the present invention is:

[0005] A low-torque self-sealing fir...

Examples

Embodiment Construction

[0019] Below, the substantive features and advantages of the present invention will be further described in conjunction with examples, but the present invention is not limited to the listed examples.

[0020] see Figure 1-4 , a low-torque self-sealing fire hydrant, comprising a plug body, the plug body is provided with a water inlet 1, and a tray 2 is fixedly arranged near the water inlet 1, and a valve shaft 8 is inserted on the tray 2, The valve shaft 8 is connected to the valve seat 7 through threads, the outer side of the valve seat 7 is sleeved in the guide cylinder 9, and the inner wall of the valve seat 7 is equipped with a valve so that the fluid flows from the valve seat 7 to the outside of the valve seat 7. The one-way valve 11, the wall of the guide cylinder 9 is provided with a through hole communicating with the outside, by turning the valve shaft 8 to make the valve seat 7 away from or close to the tray 2 to open or close the water inlet 1, when the When the va...