Toilet bowl water tank water inlet valve

Abstract

The invention discloses a toilet bowl water tank water inlet valve which comprises a valve seat, a pressure water stop valve, a buoyancy control mechanism and a water inlet pipe. The pressure water stop valve comprises an upper cover and a water stop cushion, the valve seat is arranged at the water outlet end of the water inlet pipe, a water outlet channel is formed in the bottom of the valve seatand communicated with the outer side of the water outlet end of the water inlet pipe, the surface of the water outlet end of the water inlet pipe is the water stop surface, the water stop cushion isarranged at the water outlet end of the water inlet pipe, the water stop cushion and the a valve body are integrally sealed by the upper cover, a pressure cavity is formed between the upper cover andthe water stop cushion and provided with a water inlet hole and a pressure relief hole, the water inlet hole is communicated with the pressure relief hole, and the buoyancy control mechanism is arranged outside the pressure relief hole. The valve has the advantages that the water inlet pipe replaces an inner core pipe, so that the water inlet pipe has functions of the inner core pipe, manufactureof the valve body is simpler as compared with a side water inlet valve, mounting of the inner core pipe in the valve seat is decreased as compared with a bottom water inlet valve, and unnecessary leakage points are decreased.

Description

technical field [0001] The invention belongs to a water inlet valve of a toilet water tank, in particular to a water inlet valve of a pressure water-stop toilet water tank. Background technique [0002] The prior art has a toilet tank water inlet valve, which mainly utilizes the water pressure in the domestic water pipe network to realize water inlet or block, including a valve body, a pressure water stop valve, a buoyancy control mechanism, a water inlet pipe, and the pressure water stop valve is installed on the On the valve body, the valve body is connected to the water inlet pipe, and the buoyancy control mechanism makes the inside of the pressure water stop valve form water pressure or release the pressure to realize the on-off of the water flow. Among them, the water inlet valve of the toilet tank is divided into a side water inlet valve and a bottom water inlet valve according to different water inlet methods. According to the different structure of the pressure water...

AI Technical Summary

Problems solved by technology

[0005] Looking at the water inlet valves of the above two kinds of toilet tanks, both water inlet pipes and inner core pipes are required, such as figure 1 , figure 2 As shown, the side-inlet type water inlet valve is installed on the side wall of the toilet water tank, and there is no need to adjust the distance between the pressure water stop valve 200 and the side wall of the toilet water tank, so the water inlet end of the water inlet pipe 400 is directly screwed to the valve body 100, and the inner core tube 203 is arranged inside the valve body 100 and integrally formed with the valve body, which makes it more difficult to form and demould the valve body 100, resulting in high production costs and reduced production efficiency

like image 3 As shown in the bottom water inlet valve, since the water inlet end of the water inlet pipe 4' is installed at the bottom of the toilet tank, the distance between the pressure water stop valve 2' and the bottom of the toilet tank needs to be adjusted according to the height of the toilet tank to achieve The pressure water stop valve 2' is set higher than the highest water level line of the toilet tank, so the valve body 1' needs to be connected to the water inlet pipe 4' with a movable sleeve, and the inner core pipe 23' is retractable in the water inlet pipe 4', and the inner core pipe 23' and valve body 1' are two parts respectively, and the difficulty of molding and demolding of valve body 1' is reduced, but the seal between inner core pipe 23' and water inlet pipe 4' is achieved by setting a sealing ring after all. If it fails for a long time, a water leakage point will form between the inner core pipe and the water inlet pipe, causing the water in the toilet tank to enter the domestic water pipe network through the vertical outlet channel, causing the water in the domestic water pipe network to be polluted

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