A diaphragm pressure tank with joint sealing structure

Abstract

The invention relates to a diaphragm air pressure tank with a joint seal structure. The diaphragm air pressure tank comprises a tank body, an inner container and annular plates, wherein flange platesare arranged at two ends of the tank body, a pair of parallel fixed rings are arranged on the inner wall of the tank body, pressure guide holes are formed in the fixed rings along the axes of the fixed rings seal rings are fixed on the inner circumferences of the fixed rings, and a pair of sliding rings moving oppositely or reversely are coaxially arranged between the fixed rings, the out circumferences and inner circumferences of the sliding rings are in sliding fit with the inner wall of the tank body and the seal rings respectively, and return springs are arranged between the sliding rings;through holes are formed in the circumference of an extension part at intervals; communication pipes are arranged in the circumference between the tank body and the flange plates at intervals; and pull wires penetrating through the communication pipes, the through holes and the pressure guide holes are arranged between the sliding rings and the annular plates. The tank has the effects that increase or decrease of air pressure in the tank body is controlled, extrusion and loosening between the annular plates and flange are achieved, and stable sealed connection of the inner container to the tank body is further achieved.

Description

technical field [0001] The invention relates to the technical field of pressure tanks, in particular to a diaphragm pressure tank with a joint sealing structure. Background technique [0002] Such as figure 1 , the existing air pressure tank is mainly composed of a tank body 1 and an inner tank 2, high-pressure gas is stored between the tank body 1 and the inner tank 2, the inner tank 2 is used for water storage, and flanges 3 are arranged at both ends of the tank body 1 , the two ends of the liner 2 protrude from the tank body 1 and fit with the flange 3, and then use the ring plate 5 to squeeze the two ends of the liner 2 to abut on the flange 3, and the flange 3 and the ring plate 5 are fixedly connected by bolts; during the water supply process, when the water pressure in the system decreases, the high-pressure gas squeezes the water in the liner 2 to replenish the system, thereby reducing the change of the system water pressure and raising the water pressure in the sys...

AI Technical Summary

Problems solved by technology

[0004] Bolts are used to connect the tank body, inner tank, and ring plate. However, during the actual operation of the air pressure tank, the air pressure tank will be continuously vibrated by the water flow, so it is easy to cause the bolts to unscrew and affect the airtightness of the air pressure tank.

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