JPH0483578A - Filter - Google Patents

Abstract

PURPOSE:To simply replace a cartridge by providing an adaptor provided with respective joint means connecting a raw water inflow port and a filtered water discharge port by an insertion system and the screw cap pressing the adaptor to a housing. CONSTITUTION:A joint 10a connecting a raw water inflow port 2a and a raw water flow pipe 4 and a joint 10b connecting a filtered water discharge port 2b and a filtered water flow pipe 5 are formed to a disc-shape adaptor 10 and connected to the raw water inflow port 2a and the filtered water discharge port 2b by an insertion system and connected to the raw water inflow pipe 4 and the filtered water flow pipe 5 by cap nuts 11, 12. The adaptor 10 is pressed to a housing by an annular screw cap 17 having an annular rib formed thereto. Therefore, by detaching the adaptor 10 after the screw cap 17 is detached from an upper lid 2, the raw water flow pipe 4 and the filtered water flow pipe 5 can simply be separated from the upper lid 2.

Description

[Detailed description of the invention] Industrial applications The present invention relates to a filter for filtering tap water, etc. Conventional technology A conventional filter will be explained below.

FIG. 4 is a cross-sectional view showing an example of a conventional filter, where 41 is a main body case 7, 42 is an upper lid in which a raw water inlet 42a and a filtered water outlet 42b are formed at the upper part; The raw water flow pipe 44 and the raw water inlet 42a are connected by being tightened with a cap nut 46 with the gasket 45 sandwiched between the gasket 43. Similarly, there is a gasket between the filtrate water flow pipe 47 and the filtrate outlet 42b. 4
The cartridge 50 is a cartridge containing filter media of activated carbon 51 and hollow fiber membrane 52, and is housed in the main body case 41, and the opening 50a formed at the upper end is connected to the filtered water outlet 42b. The operation of the filter connected to the lower part of the filter and formed as described above will be explained below.

Raw water flows into the main body case 41 from the raw water flow pipe 44 through the raw water inlet 42a.The raw water flows into the cartridge 50 from the lower end of the cartridge 50, and is filtered while passing through the cartridge 50. Although the activated carbon 51 and the hollow fiber membrane inside the cartridge 50 have a limited lifespan, it is necessary to replace the cartridge 50 periodically. When replacing the cartridge 50, the upper cover 42 and the main body case 41 can be removed and the cartridge 50 inside the main body case 41 replaced. When replacing the cartridge if it is installed in a place where moisture is averse, such as in a storeroom under a sink, it is best to remove the main case that houses the cartridge and the top cover that is connected to the flow channel. It is difficult, and water may spill from the opening of the main body case after removing it.Remove the cap screws that connect the raw water pipe and the drainage pipe, and remove the main body from the sink. (Due to the structure, the cap screws are close to each other, and a tool is required to remove the cap screws, so removing and installing in a narrow space is troublesome and poses a problem.) Means for Solving The present invention solves the above-mentioned conventional problems by providing a first joint that connects a first pipe that leads raw water to a raw water inlet and a raw water inlet, and a first joint that connects the raw water inlet to the raw water inlet, and a first joint that connects the raw water to the raw water inlet and the drained water to the outlet such as a faucet. The adapter includes an adapter formed with a second joint that connects the second pipe leading to the waste water outlet and a ring-shaped screw cap formed with an annular rib that presses the adapter against the housing. The connection between the first joint and the raw water inlet and the second joint and the filtered water outlet are each plug-in type, and the present invention has the above-described configuration. Embodiment FIGS. 1 and 2 are a cross-sectional view of a filter and an exploded perspective view of the vicinity of the top surface of the top lid, respectively, in an embodiment of the present invention. ,
1 is the main body case 7S, 3 is the packing, 4 is the raw water running water t
5 is the filtered water outlet, 6 is the cartridge, and 7 is the activated air.
8 is a hollow fiber membrane 9 is an O-ring These are the same as the conventional technology, so their explanation will be omitted. Raw water outlet 2 on the top cover 2
There are annular protrusions 2c and 2 near the a and filtered water outlet, respectively.
d is formed, 10 is a disk-shaped joint 10a that connects the raw water inlet 2a and the raw water flow pipe 4, and a joint 1'Ob that connects the filtrate outlet 2b and the filtrate water flow pipe 5. Adapter for each fitting 10
a, 10b, the raw water inlet 2a, and the filtrate water outlet 2b are plugged into the annular convex portions 2c, 2d, and the lower parts of the joints 10a, 10b are inserted into the raw water flow pipe 4 and the filtrate water flow pipe 5, respectively. Connected by tightening with cap nut 1.1.12 71013 is joint 1
14 is a packing that prevents water from leaking from the connection between the joint 10b and the annular projection 2d; 15 is formed inside the joint 10a; When the raw water inlet 2a and the joint 10a are connected with the water drop prevention valve, the raw water inlet 2
16 is a water drop prevention valve formed inside the joint 10b and has the same structure as the water drop prevention valve 15. 17 is an annular screw cap formed with an annular rib 17a that holds down the adapter 10 from the end.In the case of replacing the cartridge (L) When replacing the cartridge (main) By removing 10, you can easily separate the raw water flow pipe 4 and the filtered water flow pipe 5 from the top cover, so even if it is installed under the sink, you can separate the main body and take it to the top of the sink and remove it from inside the main body case. The top cover can now be removed and there is no need to worry about water leaking from the cartridge when replacing the cartridge.Furthermore, in this embodiment, the joints 10a and 10b are integrally formed, and a water drop prevention valve is provided on each of the joints 10a and 10b. Therefore, if the joints 10a and 10b are removed at the same time, the water drop prevention valves 10a and 10b will be blocked at the same time.Unlike the conventional method, when one water pipe is removed, the raw water inlet 2b is opened by the pressure of the non-excluded water pipe. Water will not overflow (~ Effects of the Invention The present invention provides a first joint that connects a first pipe that leads raw water to the raw water inlet and the raw water inlet, and a first joint that connects the raw water inlet to the raw water inlet, and a first pipe that leads the filtered water to the outlet such as a faucet. an annular screw cap formed with an annular rib that presses the adapter against the housing; The connections between the raw water inlet, the second joint, and the sewage outlet are plug-in type, so you can easily connect the casing, the pipes of pedestal 1, and the pipes of pedestal 2 by simply removing the screw cap and removing the adapter. It is possible to remove the cartridge by taking it out by placing it on top of the sink, etc. It is also possible to replace the cartridge without spilling water in areas where moisture is averse, such as under the sink.

[Brief explanation of the drawing]

Fig. 1 is a cross-sectional view of a filter according to an embodiment of the present invention. Fig. 2 is an exploded perspective view of the vicinity of the top surface of the upper lid of the filter. Fig. 3 is a joint formed in the adapter of the filter and the vicinity of the raw water inlet. Figure 4 is a cross-sectional view of a filter in an example of the prior art. Figure 5 is a perspective view of the filter installed on a sink. Raw water outlet 2b...Filtered water outlet 3...Packing 4...Raw water drain pipe 5...Filtered water pipe 6...Cartridge 7...Activated carbon 10a, 10 11, 1 13, 1 15 , 1 8... Hollow fiber membrane 9... 0 ring 0... Adapter b... Joint 2... Cap nut 4... Packing 6... Water drop prevention valve 7... Screw cap Fig. Name of agent Patent attorney Shigetaka Awano 1 person Fig. 2a + raw water inlet 2CC 2 annular part 2e: annular convex part 10: disk 1oO: joint 15: water drop prevention valve 1-42 43° 41... Main body case 42...Top lid 42a...Raw water inlet 42b...Filtered water outlet 4548...Packing 44...Raw water pipe 46.49...Bag nut 47...Filtered water driftwood pipe 50...Cartridge 50a ...Opening portion 51...Activated carbon 52...Hollow fiber membrane

Claims (2)

[Claims] (1) A casing that accommodates a filtration cartridge and has a raw water inlet and a filtrate outlet formed on its upper surface, a first joint that connects the raw water inlet to a first pipe that guides raw water to the raw water inlet, and an adapter formed with a second joint that connects a second pipe that guides filtered water to an outlet such as a faucet and the filtered water outlet; and an annular rib that is formed in an annular shape and presses the adapter against the housing. an annular screw cap formed therein, wherein the connections between the first joint and the raw water inlet and between the second joint and the filtered water outlet are each plug-in type. (2) The filter according to claim 1, wherein a water drop prevention valve is formed in each of the first joint and the second joint.