A fire-fighting water monitor head that adopts hydraulic drive for direct-current spray conversion

A technology of hydraulic drive and water cannon, which is applied in the direction of fire rescue, etc., can solve the problems that the conversion mechanism has a small scope of application, can only be used for hydraulic-controlled fire cannons, and jamming, etc., and achieves the elimination of complex mechanisms and large volumes. Effect

CN101716406BInactive Publication Date: 2011-12-21EAST CHINA JIAOTONG UNIVERSITY
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Publication Date
2011-12-21
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention discloses a fire-fighting water monitor head which adopts hydraulic drive to convert direct-current spraying. It is composed of water electromagnetic reversing valve, sealing ring and so on. The head of the fire water monitor uses the most commonly used pressure water in the fire extinguishing site as the power source, and drives the valve core to work through the conduction of the electromagnets at the left and right ends of the three-position four-way pure water electromagnetic reversing valve. The water pressure chamber is pressurized, so that the nozzle slides back and forth, realizing the automatic and smooth conversion between the direct current injection and the spray injection of the fire water monitor head. Due to the direct use of hydraulic drive, the disadvantages of complex mechanism and large volume when using hydraulically controlled telescopic oil cylinders or electronically controlled transmission mechanisms to realize DC spray conversion are eliminated. The conversion device has a simple and compact structure and is easy to operate, and is especially suitable for occasions where multiple functions such as fire extinguishing, cooling, dilution, and protection are required in fire fighting operations.
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Description

technical field

[0001] The invention relates to a nozzle of a fire-fighting water monitor, in particular to a nozzle of a fire-fighting water monitor which adopts hydraulic drive to convert direct-current spraying. Background technique

[0002] The fire water cannon is a kind of fire-fighting equipment that extinguishes fires at a certain distance by means of water jets. There are two typical forms of water jets: direct-flow injection and spray injection. Generally, the transformation between direct-flow injection and spray injection is realized by controlling the action of the spray nozzle of the nozzle of the water monitor.

[0003] At present, the commonly used fire water monitor head can be divided into three types: manual, hydraulic control and electric control. The fire-fighting water cannon that performs DC spray conversion through manual operation requires the fire fighters to rotate the DC spray conversion sleeve in person, which will bring certain dangers to the f...

Examples

Embodiment Construction

[0011] Below in conjunction with accompanying drawing and embodiment the present invention will be further described:

[0012] as attached figure 1 As shown, the present invention includes nozzle core 1, sealing ring IV2, sealing ring I4, sealing ring II10, sealing ring III12, nozzle 3, pipe joint I5, water delivery hose I6, nozzle core frame 7, cylinder body 8, left water Pressure chamber 9, pipe joint II11, right water pressure chamber 13, fastening bolt 14, three-position four-way pure water electromagnetic reversing valve 15, seal ring V16, seal ring VI19, water hose II17, pipe joint III18, pipe Connector IV20, counterbore screw 21, nozzle housing 22.

[0013] The nozzle core 1 is fixed on the nozzle core frame 7 by a washer and a lock nut; the inner wall of the nozzle 3 forms a clearance fit with the outer wall of the nozzle housing 22, and the outer wall of the nozzle 3 forms a clearance fit with the inner wall of the cylinder body 8, and the nozzle 3 can Slide back an...