Foam pump for fire fighting

Abstract

The invention discloses a foam pump for fire fighting. The foam pump for fire fighting comprises a motor, a suction chamber, a sealing cavity and a discharge chamber, the suction chamber is arranged on one side of the sealing cavity, the discharge chamber is arranged on the other side of the sealing cavity, a bearing cover is installed at one end of the suction chamber, a packing gland is installed inside the suction chamber, the output end of the motor penetrates through the bearing cover to extend into the suction chamber to be connected with a transmission shaft, one end of the transmissionshaft penetrates through the packing gland to be connected with an intermediate shaft through a coupler, wherein the number of the couplers is two, the other end of the transmission shaft is connected with a rotor through an another coupler, and a stator is arranged outside the rotor in a sleeving mode. According to the foam pump for fire fighting, the transmission shaft and the rotor are connected together through the intermediate shaft with a spiral liquid inlet piece so that the transmission shaft and the rotor can synchronously rotate, the purpose of effectively conveying B-type foam is achieved, in addition, the internal structure operates more stably during working, abrasion is not prone to occurring, and the service life of the foam pump for fire fighting is prolonged. The foam pump for fire fighting is applicable to the field of the foam pumps.

Description

technical field [0001] The invention relates to the technical field of foam pumps, in particular to a foam pump for fire fighting. Background technique [0002] A foam pump is a device installed on a fire truck or other fire fighting equipment, and is a special pump used to deliver foam stock solution or other fire extinguishing liquid. The foam liquid specially used for fire extinguishing is transported by the foam pump, mixed with water and air to form a special fire extinguishing foam, which covers the combustibles to achieve rapid fire extinguishing effect. [0003] At present, most of the foam pumps used on domestic self-developed fire trucks are plunger pumps and vane pumps. The plunger pump belongs to the positive displacement pump, which relies on the reciprocating movement of the plunger in the cylinder to change the volume of the sealed working chamber to work. The vane pump is also a positive displacement pump, which works through the change of the working volum...

AI Technical Summary

Problems solved by technology

However, when the working temperature is low, the type B foam liquid is delivered or the type B foam liquid is not cleaned in time, which will cause the type B foam to stick to the internal structure, which is easy to block and reduce the transmission efficiency.

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