JPS62244409A - Filter - Google Patents

Abstract

PURPOSE:To distinguish the state of filtering from the state of backwashing at a glance and prevent backwash water from being used erroneously by displacing valve body of a channel switch valve by means of pivotation of a water discharge tube and switching over filtering to backwashing. CONSTITUTION:A valve to switch over a channel for normal filtering to a channel for backwashing is installed, and a filtrate discharge tube 3 projecting outside is installed pivotally. Said discharge tube 3 and a valve body 10 of above-said valve are joined to switch over a channel for normal filtering to a channel for backwashing by pivotation of the discharge tube 3. As a result, in backwashing, the position of said discharge tube 3 is always displaced from normal B position to C position so that backwashing is distinguished from filtering at a glance.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to a filter for filtering drinking water and the like.

BACKGROUND OF THE INVENTION Some filters of this type use, for example, a hollow fiber membrane formed by bundling hollow fibers having numerous micropores as a filter medium. This is because when the raw water passes through the micropores, it removes turbid components such as iron rust from the water. However, if used for a long time, turbid components accumulate on the surface of the hollow fibers, reducing the filtration ability. ,'', the hollow fiber can be used again by passing water in the opposite direction to remove the turbid components accumulated on the surface of the hollow fiber.

An example of a configuration capable of backwashing is shown in FIG. 5. 45 is the water supply pipe and the main body 46
connected to. 47 is a cartridge that encloses a filter medium inside, - the inflow 047a is in the rough 1, and the outflow D is in the other end.
/I7b is provided.

48 is a hollow fiber that is bent with its ends aligned and is bundled and housed in the cartridge 47 as a filter medium; 49 is a hollow fiber 4-
It is a synthetic resin that fixes 1 of 8.

50 is a lid for sealing the inside of the main body 4G. 51
is a filtered water discharge pipe provided in the lid 50. 52 is a joint portion into which the outflow rl 47b of the cartridge 47 is fitted.

In such a configuration, when switching to the backwashing state, the lid 50 is first opened, the horn lissi 47 is taken out, turned upside down, and placed back into the main body 46. However, it is very inconvenient for the user to have to take out the horn lissi 47 and turn it over.

On the other hand, in order to eliminate this inconvenience, some devices are equipped with a switching valve for switching the water channel inside. This switching valve is configured to allow water to pass through the cartridge in the forward direction during filtration and in the reverse direction during backwashing. In this case, the user uses a switching lever to switch the water channel for filtration and backwashing.

Problems to be Solved by the Invention However, with the above configuration, the filtered water and the backstop water are discharged from the same outlet, so there is a fear that the user may mistake the filtered water for the backstop water. . For example, in the former configuration in which the J-trissi 47 is taken out and turned over (during backwashing), backwash water is discharged from the filtrate discharge pipe 51 during backwashing as well as during normal filtration. It was not possible to tell from the outside that it was in a backwashing state. On the other hand, in the case where a switching valve is provided like the latter, the position of the switching lever indicates the backwashing state during backwashing. However, people who do not even know that the filter has a backwash state do not pay attention to the position of the switching lever. Therefore, the analogy (k
Even if the lever position indicates backwashing,
There was a risk of using backwash water without noticing this.

The present invention was made in view of the following problems, and it is possible to distinguish between the filtration state and the backwashing state at a glance, and to prevent backwashing water from being used by mistake. The purpose is to provide a filter that can

Means for Solving the Problems In order to solve the problems mentioned above, the present invention provides the following steps: Attach a water discharge pipe protruding to the outside in a rotatable manner, and connect the water discharge pipe and the valve body of the valve so that as the water discharge pipe rotates, the water flow in the filtration state is reversed. It is configured so that the water channel in the washing state is switched.

Function By configuring as described above, the water discharge pipe is always displaced to a position other than that in normal use in the backwashing state, and the user can distinguish between the filtration state and the backwashing state at a glance. I can do it. In addition, the water channel is switched by rotating the water discharge pipe, and when the water discharge pipe is in the normal position, the water channel is always in the filtration state, so as long as the water discharge pipe is in the normal position, water will not be discharged. Filtered water will always be discharged from the pipe.

Embodiment A first embodiment of the present invention will be described below with reference to FIGS. 1, 2, 3, and 4. However, FIG. 1 is a sectional view taken along line DD' shown in FIG. 2. Reference numeral 1 denotes a filter body including a water supply pipe 2 and a filtered water discharge pipe 3. Reference numeral 4 designates a horn trichome which houses a filter medium, ie, a hollow fiber 48, similar to that shown in the conventional example shown in FIG. 5 accommodates Noah Torissi 4, and main body 1
It is a horn bar for fixing it to. Reference numeral 6 denotes a joint 1 to 4 that is provided in the main body 1 and is connected to the filtrate outlet 4 a of the cartridge 4 . '7 is a water channel provided on the side of the cover 5; 8 is provided at the end of the water channel 7;
This is the joint part that connects the two.

A cylindrical valve casing 9 is formed in the main body 1,
A cylindrical valve body 10 is rotatably accommodated within the valve housing 9. A shaft portion 1] is formed integrally with the valve body 10 on one side of the valve body 10. A water channel 12 is formed at the center of the valve body 10 and the shaft portion 11 along the central axis.

At the outer end of the filtrate water discharge pipe 3 1111111 part 11, there is a hole connected to the water channel 12.
The filtered water discharge pipe 3 is bent into an L shape with respect to the rotation axis of the valve body 10 and the shaft portion 11. As shown in FIG. 4, the filtered water discharge pipe 3 is rotated in the direction of the arrow Δ. This causes the lllllll portion 31;l:; and the valve body 10 to rotate.

A recess 13 for forming a flow channel between the valve body 10 and the inner wall of the valve casing 9 is provided on the side of the valve body 10, and a similar recess 14 is provided at a position adjacent to the fourth part 13 along the circumferential direction. It is being Reference numeral 15 denotes a partition wall between the recess 13 and the recess 14. The valve body 10 is also provided with a water hole 16 that penetrates from the side surface to the water channel 12 inside.

On the other hand, the main body 1 is provided with a water channel 17, a water channel 18, a discharge channel 19, and a water channel 20. One end of each of the water channel] 7, the water channel 18, the discharge channel 19, and the water channel 20 is coupled to the side of the valve gauging 9. The other end of the water channel 7 is connected to the water supply pipe 2 below the main body 1. The other end of the water channel 18 is directed toward the horn bar 5 side, and is coupled to the water channel 7 provided on the cover 5. The other end of the υ1 outlet 19 is open to the outside as it is, and during backwashing, backwash water is discharged to the outside from the open portion. The other end of the water channel 20 is connected to the outlet 4a of the cartridge 4.

Furthermore, a recess 21 is provided on the inner wall surface of the valve casing 9 to form a flow channel between the valve body 10 and the outer wall of the valve body 10 .

The inflow hole 1G is arranged so as to face the recess 21 at 1'+, and the water that has entered the recess 21 flows into the inflow hole 16.

In the filter constructed as above, during normal use, the filtrate discharge pipe 3 is moved to position B as shown in FIG. 4. ) (. When the filtrate discharge pipe 3 is at the position B, the position of the jr body] O is as shown in FIG.
Inflow II 4 b via the recess 13, waterway 18, and waterway 7
Enter Noy-1□Ridge 4. And Tsuy-1
- It is filtered within the ridge 4 and flows out from the outlet 4-1 as filtered water. Outflow D The filtered water flowing out from 4a is channel 2.
It flows into the recess 21 through the 0% recess 14 . Part 4 21
The filtered water flows into the valve body 10 through the inflow hole 16, flows into the filtered water discharge pipe 3 through the flow channel 12, and is discharged to the outside.

Next, backwashing will be explained. During backwashing, the filtrate discharge pipe 3 is erected by the user, and as shown in Fig. 4 -g-,
- placed in position C as shown. In position C, the position of the valve body 10 is as shown in FIG. In this state, raw water entering from the water supply pipe 2 flows into the four parts 14 of the valve body 10 via the water channel 17. Then, it flows into the water channel 20 through the recess 14-, and enters the cartridge 4 through the outlet 4a. The raw water entering from the outlet 4a flows inside the cartridge 4 in the opposite direction to that during filtration.

When water flows through the cartridge 4 in the opposite direction to that during filtration, turbid components such as iron rust adhering to the filter medium within the cartridge 4 begin to dissolve into the water. The water in which the turbid components are dissolved, that is, the backwash water, flows out of the cartridge 4 through the inlet 4b.

The backwash water flowing out from the inlet 4b flows into the concave portion 13 of the valve body 10 through the water channel 7 and the water channel 18, further flows from the concave portion 13 into the water channel 19, and is discharged from the backwash water discharge port 22 at the bottom of the main body 1.

Next, a second embodiment of the filter according to the present invention will be described. In FIG. 5, reference numeral 23 denotes a main body, and a pipe fitting 24 is provided at the top, and the pipe fitting is connected to the fitting 24 with a faucet pipe 25.

Reference numeral 26 denotes a discharge pipe, which is rotatably installed in the same way as the filtrate discharge pipe 3 in the first embodiment. 27 i, I A horn bar provided on the side of the four-piece body 2:3 to cover the discharge pipe 26. Tsuno bar 27
A pipe portion 28 for guiding backwash water is formed at the lower part of the pipe. When the discharge pipe 26 is pushed down, the discharge 1. ':Ii! If 2 ("r a is accommodated in the front side opening 28a of the pipe section 28. Therefore, the water discharged from the discharge pipe 26 flows inside the pipe section 28, is guided to the rear part of the main filter, and is passed through the pipe. It is discharged to the outside from a discharge 1'' 28b provided at the rear of the section 28.

Fig. 6 is a longitudinal sectional view, and Fig. 7 is a line E shown in Fig. 6.
It is a sectional view cut along -E'.

A valve casing 30 is formed within the main body 1, and a (-1 valve body; 31) is accommodated within the valve casing 30.

Reference numeral 32 is a water channel for guiding raw water flowing in from the faucet pipe 25, and 33 and 34 are water channels for discharging water inside the no-not-liss 4, which are formed in the main body 23, respectively.

One end of the water channel 32.3:3.34 is connected to the side of the valve casing 30. 35 is a recess formed on the side of the valve casing 30. On the other hand, a recess 36 and a recess 37 are formed on the side of the valve body 31, and an inflow hole 38 for flowing water into the water channel 42 within the valve body 31 is further provided. Reference numeral 39 denotes a cover for accommodating the no-note ridge 4 and attaching it to the main body 23. Reference numeral 40 denotes a water passage provided on the side of the cover 39 for supplying water to the cartridge 4. Reference numeral 41 denotes a shaft portion formed integrally with the valve body 31, and a flow channel 42 is formed inside. A root portion of the discharge pipe 26 is connected to the outer end of the shaft portion 41 .

In the filtering state of the present filter, the discharge pipe 26 is placed at position D as shown in FIG. In this case, the position of the valve body 31 is as shown in FIGS. 6 and 7, and the position of the valve body 31 is as shown in FIGS.
．． Recessed portion 37. Waterway 332 Waterway 40. Cartridge 4.
Waterway 34. Recessed portion 36, recessed portion 35. Inflow hole 38. Waterway 42
．． A water channel passing through the discharge pipe 26 is formed. The raw water flowing in from the faucet pipe 25 flows through this path, is filtered by the hollow fiber membrane in the cartridge 4, and is discharged from the discharge port of the discharge pipe 26.

Next, backwashing will be explained. During backwashing, the discharge pipe 26
is rotated by the user's operation and placed in position E shown in FIG. In this case, as mentioned above, the discharge pipe 2
The discharge port portion 26a of No. 6 is inserted into the mouth portion 28:r of the tube portion 28.

Then, the position of the valve body z (1 is as shown in FIGS. 8 and 9), water channel 32. recess 36. water channel 34. 38. A waterway is formed that passes through the waterway 42 and the discharge pipe 26. However, FIG. 8 is a longitudinal cross-sectional view in a backwash state, and FIG. 9 is a cross-sectional view taken along the line FF' shown in FIG. This is a cross-sectional view of raw water flowing in from the faucet pipe 25, flowing through this path, backwashing the hollow fiber membrane in the cartridge 4, and flowing into the discharge pipe 20.The backwash water flowing into the discharge pipe 26 flows through the pipe. It flows into the section 28, is guided to the rear of the filter, and is discharged to the outside from the discharge D 28 b.

In the second embodiment described above, the backwash water flows out through the same discharge pipe 26 as used for filtration, but since it is guided rearward by a new pipe section 28 provided outside, the user can There is very little risk of accidentally using backwash water.

Further, the inside of the pipe section 28 through which the backwash water passes is likely to become unclean due to the accumulation of dust in the backwash water.
When separated from the pipe, the mouth 28a faces the front, and the inside of the tube 28 can be cleaned by easily inserting a cleaning tool through the mouth 28a.

Effects of the Invention As described above, the present invention includes a water discharge pipe protruding to the outside that is rotatably attached, and the water discharge pipe and the valve body of the waterway switching valve connected to each other. Due to the configuration in which the waterway in the filtration state and the waterway in the backwashing state are switched with rotation, the water discharge pipe is always displaced to a position other than the normal use position in the backwashing state. The user can easily distinguish between the filtration state and the backwashing state with each knife. Also, the water channel can be switched by rotating the water discharge pipe, and water 1! :t
: f'i, ii' when the 111 tube is in normal use? If this is the case, the waterway will always be in a filtering state, so as long as the water discharge pipe is in its normal position, filtered water will always be discharged from the filtered water discharge pipe. Even if you don't know, you won't accidentally use clean backwash water.

As described above, the present invention provides a filter that is extremely easy to use for the user.

[Brief explanation of drawings]

FIG. 1 is a horizontal sectional view of the filter in the filtration state of the first embodiment of the present invention, and FIG. 2 is a vertical sectional view of the same filter in the filtration state. The figure is a longitudinal sectional view of the same filter in a backwashing state, FIG. 4 is a perspective view of the same filter,
FIG. 5 is a perspective view of a filter according to a second embodiment of the present invention, and FIG. 6 is a longitudinal cross-sectional view of the same filter in a filtering state.
Fig. 7 is a horizontal sectional view of the same filter in the filtration state, Fig. 8 is a longitudinal sectional view of the same filter in the backwashing state, and Fig. 9 is a longitudinal sectional view of the same filter in the filtration state.
The figure is a horizontal cross-sectional view of the same filter in the backwash state, No. 10.
The figure is a longitudinal sectional view of a conventional filter. 1... Main body 2... Water supply pipe 3...
Filtered water discharge pipe 4...Filtration cartridge 5...Cover 9...Valve casing 10
... Valve body 11 ... Shaft part 12 ...
Water channel 13.14... Concavity 16...
inlet

Claims (2)

[Claims] (1) It has a filtration cartridge in which a filter medium is enclosed, and a filter main body that accommodates the filtration cartridge,
A raw water inlet through which raw water flows into the filter body is provided, and a water discharge pipe is rotatably provided so that water flowing from the raw water inlet in the filtration state is directed to the filtration cartridge in the forward direction. A waterway switching valve is provided that allows water flowing in from the raw water inlet to pass in the reverse direction to the filtration cartridge in a backwashing state, and the water discharge pipe and the valve body of the waterway switching valve are connected to each other. A filter characterized in that the valve body is displaced by rotation of a water discharge pipe to switch between a filtration state and a backwash state. (2) It has a filtration cartridge in which a filter medium is enclosed, and a filter main body that accommodates the filtration cartridge,
A raw water inlet through which raw water flows is provided in the front part of the filter main body, and a water discharge pipe is rotatably provided, so that water flowing from the raw water inlet in the filtration state is directed to the filtration cartridge. A waterway switching valve is provided to allow water flowing in from the raw water inlet to pass in the opposite direction to the filtration cartridge in a backwash state, and the water discharge pipe and the valve body of the waterway switching valve are connected. , the valve body is displaced by rotation of the water discharge pipe to switch between the filtration state and the backwash state, and when the water discharge pipe is displaced to the backwash state, the discharge port portion and A filter characterized in that it is provided with a backwash water discharge pipe to which it is connected.