JPS621711U - - Google Patents

Description

[Brief explanation of the drawing]

Figure 1 shows the water purifier of this invention in use during raw water purification. Figure 2 is a vertical cross-sectional view taken along the line. Figure 2 is a cross-sectional plan view taken along the line shown in Figure 1.
The figure is a cross-sectional view taken along the line ``-'' in Figure 1, Figure 4 is a longitudinal sectional view taken along the line ``-'' in Figure 3 showing the water purifier in use during cleaning, and Figure 5 is a longitudinal sectional view taken along the line ``-'' during backwashing. FIG. 6 is a partial sectional view taken along the line --- in FIG. 5, and FIG. 7 is an explanatory diagram showing the structure and function of the operating cam of each piston valve. A...Switching valve, B...Outer cylinder, C...Water purification cartridge, 1...Outer cylinder installation port, 2...Raw water inlet,
2a, 2b, 2b'...Raw water inflow passage, 3...Purified water drain port, 3a...Purified water discharge passage, 4...Cleaning backwash drain port, 4a...Cleaning water discharge passage, 5...Cartridge joint port, 6... Backwash drainage inlet, 7... Valve body, P1... First piston valve, 11... Valve chamber (piston chamber), P2... Second piston valve, 12
... Same valve chamber (piston chamber), P3... Third piston valve, 13... Same valve chamber (piston chamber), P4...
4th piston valve, 14... Valve chamber (piston chamber)
, P5...Fifth piston valve, 15... Valve chamber (piston chamber), 11a to 15a... Rod upper end projection of each piton valve, 20... Piston valve operating mechanism,
21...Switching lever, 22...Disc cam.

Claims (1)

[Scope of utility model registration request] A water purifier configured such that a bottomed cylindrical outer cylinder is removably screwed onto a switching valve having an outer cylinder mounting opening, and a water purification cartridge is replaceably stored and set within the outer cylinder, The switching valve includes a valve body having five-way ports: a raw water inlet, a purified water drain, a cleaning backwash drain, a water purifier cartridge junction, and a cartridge backwash water drain inlet, and the raw water inlet and outer cylinder of the valve body. A first piston valve provided in a piston chamber that communicates with the passage in the mounting port, a second piston valve provided in the piston chamber that communicates with the raw water inlet of the valve body and the cartridge joint port, and a cartridge joint of the valve body. a third piston valve provided in a piston chamber that communicates with the valve body through a passageway and a purified water drain port; a fourth piston valve provided in a piston chamber that communicates with a cartridge joint port of the valve body and a cleaning backwash drain port;
A fifth piston valve is provided in a piston chamber that communicates with the backwash drain inlet of the valve body and the washing backwash drain port, and the first and third piston valves are opened when purifying water. Benshi 2nd, 4th, 5th
It operates so that the piston valve closes, and when the cartridge is washed, the first and fourth piston valves open and the second, third, and fifth piston valves close, and when the cartridge is backwashed, it operates so that the piston valve closes. A five-sided piston valve operating mechanism that operates so that the second and fifth piston valves open and the first, third, and fourth piston valves close, and can be switched to water purification, washing, and backwashing. A water purifier characterized by being composed of a valve.