A kind of antifreeze fire hydrant
A fire hydrant and valve stem technology, applied in fire rescue, water supply equipment, construction, etc., to achieve the effect of low cost and simple operation
Active Publication Date: 2018-01-23
种炜东
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Problems solved by technology
[0011] The purpose of the present invention is to provide a novel antifreeze fire hydrant to solve the disadvantages existing in the design of the existing antifreeze fire hydrant
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[0055] see Figure 1 to Figure 11 As shown, the embodiment of the present invention provides an antifreeze fire hydrant, including a lower valve body and a first valve stem 102; the lower valve body has a lower valve cavity 103 and an upper valve cavity 104, and the upper valve cavity 104 communicates with the lower valve cavity 103 ; The first valve stem 102 runs through the upper valve chamber 104 and the lower valve chamber 103, and the first valve stem 102 is provided with a disc mechanism for controlling the on-off between the lower valve chamber 103 and the upper valve chamber 104, that is to say, The disc mechanism controls whether water can enter the upper valve chamber 104 from the lower valve chamber 103; the inside of the first valve stem 102 has a first axial drainage chamber 108 extending axially along it, and the first axial drainage chamber 108 has a venturi The jet part is used to make the liquid in the upper valve chamber 104 enter the first axial drainage cha...
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The invention relates to the technical field of fire-fighting equipment, in particular to an anti-freezing fire hydrant which comprises a lower valve body and a first valve rod. The lower valve body is provided with a lower valve cavity and an upper valve cavity, and the upper valve cavity is communicated with the lower valve cavity. The first valve rod penetrates the upper valve cavity and the lower valve cavity and is provided with a valve clack mechanism, and the valve clack mechanism is used for controlling the on-off between the lower valve cavity and the upper valve cavity. A first axial drainage cavity extending in the axial direction of the first valve rod is positioned in the first valve rod. The first axial drainage cavity is provided with a venturi jet flow part which is used for making liquid in the upper valve cavity enter the first axial drainage cavity. According to the anti-freezing fire hydrant, not only is the problem of freezing of water in the fire hydrant solved, but also the shortcomings of existing lower water drainage anti-freezing type and underground installing anti-freezing type fire hydrants are overcome completely, the reliability of water supply of the fire hydrant under cold climate conditions is improved, pressure reduction and pressure regulating functions and anti-collision functions of the fire hydrant are considered, and the anti-freezing fire hydrant has the advantages of being simple and convenient to install and use.
Description
technical field [0001] The invention relates to the technical field of fire fighting equipment, in particular to an antifreeze fire hydrant. Background technique [0002] Outdoor fire hydrants are an essential part of ensuring urban fire safety. However, in most severe cold areas in northern my country, such as northern Inner Mongolia and Heilongjiang, due to the low temperature in winter, the accumulated water in the fire hydrant cavity will freeze and seal after use or testing. Blockage can not be used, leading to paralysis of fire water supply, resulting in serious loss of life and property. Therefore, the antifreeze work of fire hydrants is particularly important. [0003] At present, there are mainly two types of outdoor fire hydrants in my country, direct installation on the ground and underground well installation. For the two installation forms, the solution to antifreeze is to install an automatic drain device at the built-in water outlet valve of the conventional ...
Claims
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IPC IPC(8): E03B9/02E03B9/14
CPCE03B9/02E03B9/14
Inventor 种炜东雷炜阳
Owner 种炜东