CN210583944U - Front filter - Google Patents

Abstract

The utility model provides a front filter, it has a water inlet, a delivery port and a filtering component, filtering component includes an outer tube and a filter core, and wherein this filtering component has a first opening, a second opening and a water course, and wherein this first opening and this water course of this filtering component are linked together, and this water course forms between this filter core and this outer tube.

Description

Front filter

Technical Field

The utility model relates to a water filtration field further relates to a filter equipment, like leading filter.

Background

Water is the most basic resource of people's life, and along with the improvement of people's standard of living, the requirement to quality of water is also higher and higher.

For the existing domestic water, municipal water supply is generally used, for example, underground water is supplied to each user after being treated to a certain extent, but the water quality still cannot meet the requirements of the users, so that for some users, the water is filtered by some filters and then is reused, but the existing filters have some problems.

First, the filter is used in a water environment for a long time, the inside is easily stained, and the filter is safe with respect to water quality, so that it is an important aspect to keep clean, but the existing filter generally needs to be disassembled for washing, is inconvenient to use, is not easy to clean, and easily causes stains to remain in the filter.

Secondly, the position of the water pipe may vary from user to user, for example, the direction is vertical or horizontal, but the interface direction of the existing filter is relatively fixed, so that the requirement of different directions cannot be met.

Third, the filter cartridge of the filter needs to be cleaned periodically, and the conventional filter cartridges are removed and cleaned separately by washing or other means, which is a relatively cumbersome operation.

Fourth, the filter element of the filter needs to be cleaned periodically, but there is no mark after cleaning, so that a user does not clearly remember such cleaning information as whether cleaning was performed or when cleaning was performed last time, which is inconvenient for the user.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a filter equipment, like leading filter, it has a plurality of stations or a plurality of operating condition, and its conversion that need not dismantle and can accomplish the station.

An object of the utility model is to provide a filter equipment, like leading filter, it has a water supply station and a backwash station, can supply water work and cleaning work respectively under the operating condition of difference.

An object of the utility model is to provide a filter equipment, like leading filter, it has one and just washes the station, forms the water route reverse with the backwash station, provides better cleaning performance.

An object of the utility model is to provide a filter equipment, like leading filter, it can be through a control assembly, control filter equipment and switch between different stations.

An object of the utility model is to provide a filter equipment, like leading filter, it can adapt to not equidirectional water supply pipe, and application scope is wider.

An object of the utility model is to provide a filter equipment, like leading filter, it includes a manometer, can provide the water pressure for the user and show.

An object of the utility model is to provide a filter equipment, like leading filter, it provides a filtering component, and this filtering component can be under the self-cleaning of the condition of not dismantling.

An object of the utility model is to provide a filter equipment, like leading filter, it presents clean data for the user to convenience of customers is more clear carries out periodic cleaning.

An object of the utility model is to provide a filter equipment, like leading filter, it provides a plurality of water routes, can clean filter equipment inside conveniently through the switching in water route.

To achieve the above object, an aspect of the present invention provides a pre-filter, which has:

a water inlet;

a water outlet; and

a filter assembly, filter assembly includes an outer tube and a filter core, wherein this filter assembly has a first opening, a second opening and a water course, and wherein this first opening and this water course of this filter assembly are linked together, and this water course forms between this filter core and this outer tube.

According to some embodiments, the filter device comprises a control assembly and a filter assembly, the filter assembly comprises an outer tube and a filter element, the filter element is arranged in the outer tube, and the control assembly controls selective conduction of water paths of the water inlet, the water outlet, the sewage draining outlet, the outer tube and the filter element.

According to some embodiments, when the filter device is in the water supply station, water enters the control assembly from the water inlet, passes through the control assembly, enters the outer pipe, enters the filter element from the outer pipe, and flows to the water outlet.

According to some embodiments, the cleaning station comprises a backwash station and a forward wash station, the forward wash station and the backwash station having opposite water paths in the filter assembly.

According to some embodiments, wherein at the backwash station water enters the inside of the filter element through the water inlet and further to the outer pipe, through the outer pipe to the waste outlet.

According to some embodiments, wherein at the forward washing station water enters the outer tube through the water inlet and further to the filter element, passes through the filter element to the waste outlet.

According to some embodiments, the filter device has a stop position, and when the stop position is in the stop position, the water in the water inlet can not flow to the water outlet through the pre-filter.

According to some embodiments, the control assembly comprises a reversing element providing a plurality of mounting directions for facilitating connection of an outer conduit.

According to some embodiments, wherein the reversing element is a gimbal.

According to some embodiments, the control assembly comprises a control main body and an indexing unit, and the control main body and the indexing unit are matched to selectively control the water supply station or the cleaning station.

According to some embodiments, wherein the control body is a control valve.

According to some embodiments, the indexing unit comprises a station operating knob, and the rotation position of the station operating knob corresponds to the water supply station or the cleaning station.

According to some embodiments, wherein the utility model provides a spanner, this station operation knob of this spanner operation rotates to different stations.

According to some embodiments, the position indicating part of the transposition unit is provided with a position indicator, and the position of the operation knob pointed by the position indicator is the current position of the filtering device.

According to some embodiments, the control body has an interface for detachably connecting a reversing element.

According to some embodiments, wherein the filter assembly includes a washing brush and a washing operation knob, the washing brush and the washing operation knob cooperate to wash the filter assembly.

According to some embodiments, the filter assembly includes an inner core and a filter screen, the inner core being disposed within the filter screen.

According to some embodiments, the filter device comprises a pressure gauge, and the pressure gauge is arranged on the control assembly.

According to some embodiments, the filter device comprises a recording element for recording the cleaning information, the recording element being arranged on the filter assembly.

According to some embodiments, wherein the recording element is a january marking ring.

According to some embodiments, the filter device has a water supply station, a backwashing station and a forward washing station, and the control component selectively controls the water paths of the water inlet, the water outlet, the outer pipe, the filter element and the sewage outlet to respectively correspond to the water supply station, the backwashing station and the forward washing station.

According to some embodiments, when the filtering device is located at the water supply station, the water inlet, the outer pipe, the filter element and the water outlet are communicated in sequence.

According to some embodiments, when the filter device is at the backwashing station, the water inlet, the filter element, the outer pipe and the sewage outlet are communicated in sequence.

According to some embodiments, when the filtering device is located at the forward washing station, the water inlet, the outer pipe, the filter element and the sewage outlet are communicated in sequence.

According to some embodiments, the filter device has a stop station, in which the water path between the water inlet and the water outlet is closed.

According to some embodiments, the control assembly comprises a reversing element providing a plurality of mounting directions for facilitating connection of an outer conduit.

According to some embodiments, the filter device comprises a pressure gauge, and the pressure gauge is arranged on the control assembly.

According to some embodiments, wherein the filter assembly includes a cleaning brush and a cleaning operation knob, the cleaning brush and the cleaning operation knob cooperate to clean the filter element and/or the outer tube at the forward cleaning station or the reverse cleaning station.

According to some embodiments, the filter device comprises a recording element for recording the cleaning information, the recording element being arranged on the filter assembly.

Drawings

Fig. 1 is a perspective view of a filter device according to an embodiment of the present invention.

Fig. 2A is a schematic view of an angle of a filter device according to an embodiment of the present invention.

Fig. 2B is another schematic angle view of the filtering apparatus according to the above embodiment of the present invention.

Fig. 3 is an exploded schematic view of the filter device according to the above embodiment of the present invention.

Fig. 4A is a water flow diagram of a water supply station of the filtering apparatus according to the above embodiment of the present invention.

Fig. 4B is a water flow diagram of a backwashing operation position of the filtering device according to the above embodiment of the present invention.

Fig. 4C is a schematic flow diagram of a forward washing station of the filtering apparatus according to the above embodiment of the present invention.

Fig. 4D is a schematic flow diagram of a rest position of the filtering apparatus according to the above embodiment of the present invention.

Fig. 5A is a schematic diagram of the water supply station of the control assembly of the filtering apparatus according to the present invention.

Fig. 5B is a schematic diagram of the backwashing operation position of the control assembly of the filtering device according to the above embodiment of the present invention.

Fig. 5C is a schematic view of the main wash station of the control assembly of the filter device according to the above embodiment of the present invention.

Fig. 5D is a schematic view of the stop position of the control assembly of the filtering apparatus according to the above embodiment of the present invention.

Fig. 6 is a schematic view of the installation of the pipeline of the filtering apparatus according to the above embodiment of the present invention.

Fig. 7 is an operation schematic diagram of the filtering apparatus according to the above embodiment of the present invention.

Fig. 8 is a schematic diagram of a filtration system according to a preferred embodiment of the present invention.

Fig. 9 is a schematic top view of a stationary plate of a control body of a control assembly of a filter device according to a preferred embodiment of the present invention.

Fig. 10 is a schematic top view of the movable valve plate of the control body of the control assembly of the filtering apparatus according to the preferred embodiment of the present invention, wherein the broken line portion of the drawing represents the blind via hole.

Fig. 11 is a schematic view showing the coincidence of the movable valve plate and the fixed valve plate of the control body of the control assembly when the filter device according to the preferred embodiment of the present invention is located at the water supply station.

Fig. 12 is a schematic diagram showing the coincidence of the movable valve plate and the fixed valve plate of the control body of the control assembly when the filter device according to the preferred embodiment of the present invention is located at the backwashing station.

Fig. 13 is a schematic view showing the coincidence of the movable valve plate and the fixed valve plate of the control body of the control assembly when the filter device according to the preferred embodiment of the present invention is located at the forward washing station.

Fig. 14 is a schematic view showing the superposition of the movable valve plate and the fixed valve plate of the control body of the control assembly when the filter device according to the preferred embodiment of the present invention is at the stop station.

Fig. 15 is a perspective view of a stationary plate of a control body of a control assembly of a filtering apparatus according to a preferred embodiment of the present invention.

Fig. 16 is a perspective view of a movable valve plate of a control body of a control assembly of a filter device according to a preferred embodiment of the present invention.

Fig. 17 is another perspective view of the movable valve plate of the control body of the control assembly of the filtering apparatus according to the preferred embodiment of the present invention.

Fig. 18 is a top perspective view of a valve body of a control assembly of a filter device according to a preferred embodiment of the present invention.

Fig. 19 is another top perspective view of the valve body of the control assembly of the filter device according to the preferred embodiment of the present invention.

Fig. 20 is a bottom perspective view of the control body of the control assembly of the filtering device according to the preferred embodiment of the present invention.

Fig. 21 is a sectional perspective view of a control body of a control assembly of a filtering apparatus according to a preferred embodiment of the present invention.

Fig. 22 is another perspective view, in cross-section, of a control body of a control assembly of a filtration device according to a preferred embodiment of the present invention.

Fig. 23A is another perspective view of the control body of the control assembly of the filtering apparatus according to the preferred embodiment of the present invention, wherein the filtering apparatus of the present invention is in the water supply position.

Fig. 23B is another perspective view of the control body of the control assembly of the filtering apparatus according to the preferred embodiment of the present invention, wherein the filtering apparatus of the present invention is in the water supply position. Fig. 24 is another perspective view of the control body of the control assembly of the filter assembly according to the preferred embodiment of the present invention, wherein the filter assembly is in the backwash operating position.

Fig. 25 is another cut-away perspective view of the control body of the control assembly of the filter assembly according to the preferred embodiment of the present invention, wherein the filter assembly is in this forward washing position.

Fig. 26 is another perspective view of the control body of the control assembly of the filter assembly according to the preferred embodiment of the present invention, wherein the filter assembly is in the rest position.

Fig. 27 is a perspective view in cross-section of a filter assembly according to a preferred embodiment of the present invention.

Detailed Description

The following description is presented to disclose the invention so as to enable any person skilled in the art to practice the invention. The preferred embodiments in the following description are given by way of example only, and other obvious variations will occur to those skilled in the art. The basic principles of the invention, as defined in the following description, may be applied to other embodiments, variations, modifications, equivalents and other technical solutions without departing from the spirit and scope of the invention.

It will be understood by those skilled in the art that in the present disclosure, the terms "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are used in a generic and descriptive sense only and not for purposes of limitation, as the terms are used in the description to indicate that the referenced device or element must have the specified orientation, be constructed and operated in the specified orientation, and not for the purpose of limitation.

It is understood that the terms "a" and "an" should be interpreted as meaning that a number of one element or element is one in one embodiment, while a number of other elements is one in another embodiment, and the terms "a" and "an" should not be interpreted as limiting the number.

Referring to fig. 1-7, a pre-filter 10 according to a preferred embodiment of the present invention is illustrated.

Fig. 1 shows a filter device according to a preferred embodiment of the invention, embodied, for example, as a pre-filter 10. Fig. 2A is a schematic view of an angle of the pre-filter 10 according to the preferred embodiment of the present invention. Fig. 2B is another perspective view of the pre-filter 10 according to the above embodiment of the present invention. Fig. 3 is an exploded schematic view of the pre-filter 10 according to the above embodiment of the present invention. Fig. 4A-4D are schematic diagrams illustrating different working positions of the pre-filter 10 according to the above embodiment of the present invention. Fig. 5A-5D are schematic diagrams of control assembly stations according to the above-described embodiments of the present invention. Fig. 6 is a schematic view of the piping installation of the pre-filter 10 according to the above embodiment of the present invention. Fig. 7 is an operational view of the pre-filter 10 according to the above embodiment of the present invention.

Referring to fig. 1, 6 and 7, the present invention provides a pre-filter 10, the pre-filter 10 having a water inlet 11 and a water outlet 12, the water inlet 11 being adapted to supply water to the pre-filter 10 through a water supply pipe 1, the water outlet 12 being adapted to supply filtered water to a water supply pipe 2. That is, the water inlet 11 is adapted to be connected to the water supply pipeline 1 so as to receive water from the water supply pipeline 1, and the water outlet 12 is adapted to be connected to the water use pipeline 2 so as to supply filtered water to the water use pipeline 2.

The pre-filter 10 is provided with a drain 13, which drain 13 is adapted to discharge sewage to a drain conduit 3. That is, the drain outlet 13 is adapted to be connected to a drain pipe 3 so as to discharge sewage to the drain pipe 3.

Referring to fig. 4A-5D, the pre-filter 10 has a plurality of stations corresponding to a plurality of working states, respectively, to meet different working requirements of the pre-filter 10.

Specifically, the pre-filter 10 has a water supply station corresponding to a water supply operation state. Accordingly, the pre-filter 10 is provided with a water supply path 110, and when the pre-filter 10 is in the water supply station, the water supply path 110 is conducted so as to supply water through the pre-filter 10. That is, when the pre-filter 10 is in the water supply station, the water supplied from the water supply pipeline 1 enters the pre-filter 10 through the water inlet 11, passes through the water supply waterway 110, is filtered by the pre-filter 10, and is then delivered to the water outlet 12, so as to supply filtered water to the water pipeline 2.

The pre-filter 10 has a backwash station corresponding to a backwash operation state. The pre-filter 10 is provided with a backwashing water channel 120, and when the pre-filter 10 is at the backwashing station, the backwashing water channel 120 is conducted so as to facilitate the cleaning work of the pre-filter 10. That is, when the pre-filter 10 is at the backwashing station, the supply water of the water supply pipeline 1 enters the pre-filter 10 through the water inlet 11, passes through the backwashing water channel 120, cleans the pre-filter 10, and then is delivered to the sewage discharge port 13, thereby discharging the sewage cleaned the pre-filter 10 to the sewage discharge pipeline 3.

Further, the pre-filter 10 is provided with a forward washing station and a forward washing water path 130, and the forward washing station corresponds to a forward washing working state. The forward wash water path 130 and the backwash water path 120 provide opposite water flow directions to form a cooperative cleaning manner, so that cleaning is more thorough. That is, when the pre-filter 10 is in the forward washing station, the supply water of the water supply pipeline 1 enters the pre-filter 10 through the water inlet 11, and passes through the forward washing water channel 130, after the pre-filter 10 is cleaned, the supply water is delivered to the sewage outlet 13, so that the sewage for cleaning the pre-filter 10 is discharged to the sewage discharge pipeline 3.

Further, the pre-filter 10 has a stop position corresponding to a stop state of the pre-filter 10. That is, at the stop position, the water of the water supply pipe 1 does not flow to the water using pipe 2 through the pre-filter 10.

Further, referring to fig. 5A-5D, the present invention provides a wrench 500 for operating the station operating knob 1432. The wrench 500 is used to rotate the station operation knob 1432 with less effort and convenience, so that the pre-filter 10 can be switched among different stations, such as a water supply station, a backwashing station, a forward washing station and a stop station.

Referring to fig. 1-7, the pre-filter 10 includes a control assembly 14 and a filter assembly 15. The control assembly 14 is used for controlling the operation of the pre-filter 10, and the filter assembly 15 is used for water filtration.

More specifically, the control assembly 14 is used to control the pre-filter 10 to operate at multiple stations, such as a water supply station, a forward wash station, a backwash station, and a stop station.

For example, when the control unit 14 controls the pre-filter 10 to be at the water supply station, the water supply path 110 is turned on, and the water in the water supply pipeline 1 enters the pre-filter 10 through the control unit 14, and after being filtered by the filter unit 15, flows to the water outlet 12 and is then supplied to the water pipeline 2, i.e. providing filtered water for the user. That is, water can be filtered from the outside of the filter cartridge 152 to the inside of the filter cartridge 152, and the inside of the filter cartridge 152 assembly is in communication with the water using pipe 2, to produce filtered water.

When the control component 14 controls the prefilter 10 to be at the backwashing station, the backwashing water channel 120 is conducted, water in the water supply pipeline 1 enters the prefilter 10 through the control component 14, and flows to the sewage outlet 13 after acting with the filtering component 15, namely, the prefilter 10 is cleaned in a backwashing manner.

When the control module 14 controls the pre-filter 10 to be at the forward washing station, the forward washing water path 130 is conducted, and the water in the water supply pipeline 1 enters the pre-filter 10 through the control module 14, and flows to the sewage outlet 13 after reacting with the filtering module 15, i.e. the pre-filter 10 is cleaned in a forward washing manner.

When the control unit 14 controls the pre-filter 10 to be in the stop position, the water path is blocked, i.e. water in the water supply pipeline 1 does not enter the pre-filter 10. Namely, when the user does not need to use water, the water is blocked, and the domestic pipeline and the water using equipment are protected.

Further, the control assembly 14 includes a control body 141 and a transposition unit 143, and the transposition unit 143 is matched with the control body 141, so that the control assembly 14 is in a connection mode of different stations. More specifically, the transposition unit 143 can be switched between a water supply station, a forward washing station, a reverse washing station, and a stop station in cooperation with the control body 141.

Further, the control assembly 14 includes a reversing element 142, the reversing element 142 being coupled to the control body 141 for providing a plurality of attachment orientations. When installed, the direction changing member 142 connects the water supply pipe 1 and the water using pipe 2. That is, the direction changing member 142 provides a plurality of installation directions for the water supply pipe 1 and the water outlet pipe 2, in other words, the direction changing member 142 can accommodate different installation directions of the water supply pipe 1 and the water outlet pipe 2. In particular, the direction changing member 142 may be a universal joint so as to easily connect the water supply pipe 1, the water outlet pipe 2 and the pre-filter 10. In particular, the reversing element 142 may be a 360 degree brass fitting, suitable for various installation environments.

That is, the direction changing member 142 provides a plurality of installation directions for connecting an external pipe, such as the water supply pipe 1 and/or the water using pipe 2.

Further, the reversing element 142 is detachably connected to the control body 141, for example, but not limited to, in a threaded manner. The control body 141 may be a control valve 80. The control body 141 has an interface 1410 for connecting the direction-changing element 142.

It is worth mentioning that the water inlet 11 and the water outlet 12 of the conventional control valve in the prior art are fixed and cannot be switched in direction, so that the customer is very inconvenient in the installation process. And in the utility model discloses in, need design the pipeline in order to install this equipment, this control assembly 14 is equipped with this switching-over component 142, like behind the universal joint function, just can solve the complicated pipeline of family and send out, for example, the left side is advanced right and is gone out, the right side is advanced left and is gone out, perhaps from top to bottom, a plurality of directions that can swivelling joint such as 360 to can realize conveniently installing. In other words, the direction changing member 142 is configured to rotate relative to the control valve 80 to provide multiple orientations of the water inlet 11 and the water outlet 12.

The indexing unit 143 includes a station operating knob 1432 that may be rotationally operated so that the control assembly 14 is in a different station. In particular, the station operating knob 1432 is provided with an identifier, such as an identifier showing water supply, back wash, front wash, stop, so that the user is clearly aware of the current station and the direction of the station desired to be adjusted.

The station indicator 1431 is provided with a station indicator (symbol), and when the station operation knob 1432 is rotated, the identifier on the station operation knob 1432 pointed by the station indicator on the station indicator 1431 corresponds to the current station of the pre-filter 10.

The control assembly 14 may further include a housing 144, wherein the housing 144 is disposed outside the control assembly 14 to facilitate protecting and enclosing the control assembly 14.

The filter assembly 15 includes a filter element 152 and an outer tube 151, the filter element 152 being disposed within the outer tube 151 to form a filtering environment. A water channel 1510 is formed between the filter element 152 and the outer tube 151, so that water entering or exiting the water channel 1510 flows along the inner wall of the outer tube 151. In other words, the water channel 1510 is formed between the filter cartridge 152 and the outer tube 151.

The filter cartridge 152 includes an inner core 1521 and a screen 1522. The inner core 1521 is disposed inside the screen 1522, and the inner core 1521 and the screen 1522 are disposed inside the outer tube 151 as a whole to form the filtering environment.

Further, the filter assembly 15 includes a washing brush 153, and the washing brush 153 is disposed between the filter screen 1522 and the outer tube 151 for cleaning the filter screen 1522 and the inner wall of the outer tube 151.

The filter assembly 15 includes a cleaning operation knob 154, and the cleaning operation knob 154 is drivingly connected to the cleaning brush 153. That is, when the washing operation knob 154 is operated, for example, rotated, the washing brush 153 is driven to move relative to the filter screen 1522 and the outer tube 151, thereby providing a cleaning action to the filter screen 1522 and the outer tube 151. Preferably, the wrench 500 has two trepan 501, wherein the trepan 501 is respectively disposed at two ends of the wrench 500, and one trepan 501 of the wrench 500 is adapted to hold the station operation knob 1432, and the other trepan 501 is adapted to hold the outer tube 151. More preferably, the two trepan bores of the wrench 500 have different inner diameters.

Further, the rotation of the washing brush 153 can be matched with different washing stations of the pre-filter 10, so as to better clean the filter screen 1522 and the outer tube 151 respectively. For example, when stains exist on the surface of the filter screen 1522, the cleaning brush 153 can be used for rotary cleaning, stubborn stains on the filter screen 1522 can be brushed off, and then backwashing is carried out, namely the stains are removed through the operation of a backwashing station. When stains exist on the inner surface of the outer tube 151, the inner surface of the outer tube 151 can be brushed by using the cleaning brush 153 in a rotating manner, stubborn stains on the inner wall of the outer tube 151 can be brushed off, and then backwashing is carried out, namely, the stains are discharged through the operation of a backwashing station.

The water paths of the pre-filter 10 are formed by different conducting relations of the water inlet 11, the control assembly 14, the filter assembly 15 and the outer tube 151.

That is, the control assembly 14 controls selective communication of the water paths of the water inlet 11, the water outlet 12, the sewage discharge outlet 13, the outer pipe 151 and the filter cartridge 152. In other words, the control assembly 14 controls the communication relationship among several or more of the water inlet 11, the water outlet 12, the sewage discharge outlet 13, the outer pipe 151 and the filter cartridge 152, thereby forming water paths of different stations.

Specifically, referring to fig. 4A, when the pre-filter 10 is located at the water supply station, the water supply waterway 110 is conducted, that is, the water in the water supply pipeline 1 enters the control component 14 through the water inlet 11, enters the outer tube 151 through the control of the control component 14, is filtered inwards by the outer tube 151 to enter the filter core 152, and then flows to the water outlet 12 after being filtered by the filter screen 1522. More specifically, when the pre-filter 10 is located at the water supply station, the transposition unit 143 sequentially connects the water inlet 11, the outer tube 151, the filter assembly 15 and the water outlet 12. That is, water can be introduced from the outside of the filter element 152, and the inside of the filter element 152 is in a state of being communicated with the water using pipe 2, thereby producing filtered water.

Referring to fig. 4B, when the pre-filter 10 is at the backwashing station, the backwashing water path 120 is turned on, that is, water in the water supply pipeline 1 enters the filter core 152 from the water inlet 11, reversely washes the filter screen 1522, enters the outer pipe 151 from the filter core 152, and then flows to the sewage outlet 13 along the outer pipe 151. More specifically, when the prefilter 10 is at the backwashing station, the transposition unit 143 sequentially opens the passages of the water inlet 11, the filter assembly 15, the outer pipe 151 and the sewage outlet 13. That is, water can enter from the inside of the filter element 152, the outside of the filter element 152 is communicated with the sewage discharge outlet 13, and dirt attached to the outside of the filter element 152 can be removed, so that the filter element 152 can be kept clean.

Referring to fig. 4C, when the pre-filter 10 is in the forward washing station, the forward washing water path 130 is turned on, that is, the water in the water supply pipeline 1 enters the outer pipe 151 from the water inlet 11, enters the filtering assembly 15 from the outer pipe 151, and flows to the sewage outlet 13 through the filtering assembly 15. More specifically, when the prefilter 10 is in the forward washing station, the transposition unit 143 sequentially opens the passages of the water inlet 11, the outer pipe 151, the filter assembly 15 and the sewage outlet 13. That is, water can enter from the outside of the filter element 152, the inside of the filter element 152 is in a state of being communicated with the sewage draining outlet 13, and dirt attached to the inside of the filter element 152 can be removed, so that the filter element 152 is kept clean.

Referring to fig. 4D, when the pre-filter 10 is in the stop position, the water path of the pre-filter 10 is closed, and water in the water supply pipeline 1 does not enter the pre-filter 10 through the water inlet 11. That is, the user can switch directly from the station of the control assembly 14 when not needed to use water, shutting off the water intake at the user's home, protecting the plumbing and water consuming equipment at the home.

Further, the pre-filter 10 comprises a pressure gauge 16, the pressure gauge 16 being adapted to indicate the pressure of the water passing through the pre-filter 10. The pressure gauge 16 is communicated with the water path of the pre-filter 10.

The pre-filter 10 includes a recording element 17, and the recording element 17 is used for recording the cleaning record so as to facilitate the user to know the cleaning information. The registration element 17 is exemplified but not limited to a lunar ring. The recording element 17 is provided at the bottom of the outer tube 151 at a position where the cleansing operation knob 154 is located so as to record the month when the user performs the rotating operation. For example, after the user finishes washing each month, the month standard ring can be moved to the corresponding month, and the washing time is recorded. It should be noted that in this embodiment of the present invention, the recording element 17 is illustrated as a ring-shaped monthly ring, but in other embodiments, the recording element 17 may be in other forms or other positions, such as an electronic screen recording display.

The pre-filter 10 can be installed at the main water inlet of the house to filter out suspended particles in the water and flush out the intercepted dirt from the sewage outlet 13. The pre-filter 10 can be operated to select a work station by rotating the station operating knob 1432 to facilitate cleaning of the cartridge 152, eliminating the user's annoyance of replacing the cartridge 152.

In particular, the outer tube 151 of the filter assembly 15 may be made of a transparent material so that a user can clearly see the condition of the filter assembly 15. After the installation is completed, the user opens the water inlet valve, and after the prefilter 10 starts to work normally for a period of time, the user can clearly see the filtered impurities through the transparent outer tube 151, so that the filter screen 1522 can be washed and maintained in time. When the filter screen 1522 has foreign substances, the washing operation knob 154 may be manually rotated, and the foreign substances caught on the surface of the filter screen 1522 are washed away by the washing water by the washing brush 153, so that the user does not need to manually wash or replace the filter cartridge 152.

Referring to fig. 6 and 7, the pre-filter 10 may include a bracket 18 to facilitate mounting and securing the pre-filter 10. The bracket 18 may be a metal bracket 18 to facilitate securing the pre-filter 10 to a wall or frame structure.

During the installation of the pre-filter 10, the pre-filter 10 can be fixed to a wall or other fixable objects by the bracket 18, the water inlet 11 of the pre-filter 10 can be installed and connected to the external water supply pipeline 1, and more particularly, the direction changing member 142 of the pre-filter 10 is disposed at the water supply pipeline 1, the water outlet 12 is connected to the water using pipeline 2, and the sewage discharge outlet 13 is connected to the sewage discharge pipeline 3. The waste outlet 13 may be securely connected to the waste pipe 3 by means of a sealing element, for example by means of a snap fit. The sewerage conduit 3 may extend to a sewer for facilitating the discharge of sewage.

Fig. 8 is a schematic view of a filtration system 0 according to a preferred embodiment of the present invention. The pre-filter 10 may be applied to a filter system 0. For example, the filtering system 0 may include a water supply system 2, at least one pre-filter 10 and at least one water processing device 3, the water supply system 2 provides water to the pre-filter 10 to reach the pre-filter 10, and after the pre-filter 10 is filtered, filtered water is delivered to the water processing device 3 to provide water with different requirements for users.

For example, the water supply system 2 may be a pump that pumps ground water, such as well water, to a pressurized tank or a municipal tap water that is then supplied to the pre-filter 10. The processing device 3 is not limited to various water treatment devices such as a central water softener, a water heater, a water dispenser and the like, for example, so as to provide different water such as cold water, hot water, drinking water and the like for users.

In particular, the pre-filter 10 is adapted to be installed at the total water intake end of a home, in such a way that all domestic water in the home can be filtered. Other devices in the home, such as water softeners, water heaters, etc., are adapted to be installed behind the water circuit of the pre-filter 10.

As shown in fig. 9 to 27 of the drawings, the control body 141 of the control assembly 14 of the pre-filter 10 according to the preferred embodiment of the present invention can be implemented as a control valve, such as the control valve 80, wherein the control valve 80 comprises a valve body 81, a fixed valve plate 60 and a movable valve plate 70, wherein the valve body 81 forms an inner cavity 801, the fixed valve plate 60 has a first channel 601, a second channel 602 and a third channel 603, the movable valve plate 70 has a fourth channel 604 and a fifth channel 605, wherein the filter assembly 15 forms a first opening 1501 and a second opening 1502, and the first opening 1501 of the filter assembly 15 is communicated with the water channel 1510 of the filter assembly 15, wherein the fixed valve plate 60 and the movable valve plate 70 of the control valve 80 are both disposed in the inner cavity 801, wherein the inner cavity 801 is communicated with the water inlet 11 of the pre-filter 10 and the fourth channel 604 of the control valve 80, respectively, the first channel 601 is in communication with the first opening 1501 of the filter assembly 15, the second channel 602 is in communication with the second opening 1502 of the filter assembly 15, the third channel 603 is in communication with the water outlet 12, and the fourth channel 604 is in communication with the inner cavity 801. Preferably, the stationary plate 60 of the control valve 80 may be integrally formed with the valve body 81.

As shown in fig. 9 to 27 of the drawings, when the pre-filter 10 according to the preferred embodiment of the present invention is located at the water supply station, the movable plate 70 of the control valve 80 is rotated relative to the fixed plate 60 until the fourth channel 604 of the movable plate 70 communicates with the first channel 601, the fifth channel 605 is respectively communicated with the second channel 602 and the third channel 603, thereby allowing raw water or water to be treated to flow in from the water inlet 11 and then pass through the inner cavity 801 of the control valve 80, the fourth channel 604, the first channel 601, the first opening 1501 of the filter assembly 15, after further purification treatment by the filter element 152, the purified water flows to the water outlet 12 of the pre-filter 10 through the second opening 1502 of the filter assembly 15, the second channel 602 of the control valve 80, the fifth channel 605 and the third channel 603, and flows out through the water outlet 12 of the pre-filter 10. Accordingly, the raw water flowing in from the water inlet 11 of the pre-filter 10 is purified and the purified water is supplied through the water outlet 12 of the pre-filter 10.

As shown in fig. 9 to 27 of the drawings, the movable valve plate 70 of the control valve 80 of the control assembly 14 of the pre-filter 10 according to the preferred embodiment of the present invention further has a sixth channel 606, and the fixed valve plate 60 further has a seventh channel 607, wherein the seventh channel 607 of the fixed valve plate 60 is communicated with the sewage outlet 13. Preferably, the drain outlet 13 of the pre-filter 10 is provided at the valve body 81.

As shown in fig. 9 to 27 of the drawings, when the pre-filter 10 of the present invention is located at the backwashing position, the movable valve plate 70 of the control valve 80 is rotated relative to the fixed valve plate 60 to the fourth channel 604 and the second channel 602 of the movable valve plate 70, and the sixth channel 606 is respectively communicated with the first channel 601 and the seventh channel 607, so as to allow raw water or water to be treated to flow into the water inlet 11, then flow through the inner cavity 801 of the control valve 80, the fourth channel 604, the second channel 602, the second opening 1502 of the filter assembly 15, and further reverse flush the filter element 152, and then flow into the drain 13 through the first opening 1501, the first channel 601, the sixth channel 606, and the seventh channel 607 of the filter assembly 15, and flow out through the drain 13. Accordingly, after the raw water flowing in from the water inlet 11 of the pre-filter 10 reversely washes the filter element 152 of the pre-filter 10, the generated sewage is discharged through the sewage outlet 13.

As shown in fig. 9 to 27 of the drawings, when the pre-filter 10 of the present invention is located at the forward washing station, the movable valve plate 70 of the control valve 80 is rotated relative to the fixed valve plate to the fourth channel 604 of the movable valve plate 70 to be communicated with the first channel 601, and the sixth channel 606 is respectively communicated with the second channel 602 and the seventh channel 607, so as to allow raw water or water to be treated to flow in from the water inlet 11, then flow into the inner cavity 801 of the control valve 80, the fourth channel 604, the first channel 601, the first opening 1501 of the filter assembly 15, and further flow into the drain 13 of the pre-filter 10 through the second opening 1502 of the filter assembly 15, the second channel 602 of the control valve 80, the sixth channel 606, and the seventh channel 607, and be discharged through the drain 13. Accordingly, after the raw water flowing in from the water inlet 11 of the pre-filter 10 positively washes the filter element 152 of the pre-filter 10, the generated sewage is discharged through the sewage outlet 13.

As shown in fig. 9 to 27 of the drawings, when the pre-filter 10 of the present invention further has a stop position, wherein when the pre-filter 10 is at the stop position, the fourth channel 604 of the movable valve plate 70 is closed by the fixed valve plate 60. Accordingly, when the pre-filter 10 is set in the stop station, the communication between the water inlet 11 and the first opening 1501 of the filter assembly 15 is cut off by the control valve 80. In other words, when the pre-filter 10 is in the stop position, the fourth channel 604 of the movable plate 70 faces the solid portion of the fixed plate 60, so that the fourth channel 604 of the movable plate 70 is no longer in communication with the first channel 601, and the communication between the water inlet 11 and the first opening 1501 of the filter assembly 15 is cut off.

As shown in fig. 9 to 27 of the drawings, when the pre-filter 10 of the present invention further has a direction-changing element 142, the control valve 80 further has an interface 1410, the interface 1410 is detachably connected to the direction-changing element 142, the interface 1410 includes a first interface 811 and a second interface 812, wherein the first interface 811 is communicated with the inner cavity 801, the second interface 812 is communicated with the third channel 603, the direction-changing element 142 has a first direction-changing interface 1421 and a second direction-changing interface 1422, the water inlet 11 and the water outlet 12 are disposed on the direction-changing element 142, wherein the first direction-changing interface 1421 is respectively communicated with the first interface 811 and the water inlet 11, and the second direction-changing interface 1422 is respectively communicated with the second interface 812 and the water outlet 12.

As shown in fig. 9 to 27 of the drawings, when the pre-filter 10 of the present invention is located at the water supply station, water flows into the first direction-changing connector 1421 of the direction-changing element 142 from the water inlet 11, flows through the first connector 811 into the inner cavity 801, then flows into the first channel 601 of the fixed valve plate 60 through the fourth channel 604 of the movable valve plate 70, passes through the first opening 1501 of the filter assembly 15, then enters the outer tube 151, is filtered by the filter core 152 into the inner side of the filter core 152, then flows into the second channel 602 of the fixed valve plate 60 through the second opening 1502 of the filter assembly 15, flows into the third channel 603 through the fifth channel 605 of the movable valve plate 70, and flows out of the water outlet 12 through the second connector 812 and the second direction-changing connector 1422 in sequence; when the pre-filter 10 is at the backwashing station, water flows into the first reversing connector 1421 of the reversing element 142 from the water inlet 11, then flows into the inner cavity 801 through the first connector 811, then flows into the second channel 602 of the fixed valve plate 60 through the fourth channel 604 of the movable valve plate 70, flows into the inner side of the filter element 152 through the second opening 1502 of the filter assembly 15, backflushs the filter element 152, flows into the outer tube 151, then flows into the first opening 1501 of the filter assembly 15, then flows into the first channel 601 of the fixed valve plate 60, and flows into the seventh channel 607 of the fixed valve plate 60 through the sixth channel 606 of the movable valve plate 70, and then flows out of the sewage outlet 13; when the pre-filter 10 is in the forward washing station, water flows into the first direction-changing connector 1421 of the direction-changing element 142 from the water inlet 11, then flows through the first connector 811 into the inner cavity 801, then flows into the first channel 601 of the fixed valve plate 60 through the fourth channel 604 of the movable valve plate 70, passes through the first opening 1501 of the filter assembly 15, then enters the outer tube 151, positively washes the filter core 152, then flows into the inner side of the filter core 152, then flows into the second channel 602 of the fixed valve plate 60 through the second opening 1502 of the filter assembly 15, and then flows into the seventh channel 607 of the fixed valve plate 60 through the sixth channel 606 of the movable valve plate 70, and then flows out of the sewage outlet 13.

As shown in fig. 1 to 8 of the drawings, the washing brush 153 of the filter assembly 15 of the pre-filter 10 according to the preferred embodiment of the present invention is disposed between the filter element 152 and the outer tube 151, and the washing operation knob 154 is rotatably coupled to the washing brush 153, so that a user can rotate the washing brush 153 through the operation knob 154 to clean the filter screen 1522 and the inner wall of the outer tube 151. Accordingly, the washing brush 153 has bristles or setae directed toward the inner wall of the outer tube 151 and the outer wall of the filter screen 1522, respectively. That is, when the washing operation knob 154 is operated, e.g., rotated, the washing brush 153 is driven to rotate, so that the bristles at both sides thereof brush the filter screen 1522 and the outer tube 151, thereby removing foreign substances and contaminants attached to the outer surface of the filter screen 1522 and the inner surface of the outer tube 151.

As shown in fig. 1 to 8 of the drawings, the recording element 17 of the pre-filter 10 according to the preferred embodiment of the present invention is provided at the filter assembly 15. Optionally, the recording element 17 is provided in the control assembly 14 of the pre-filter 10. As shown in fig. 1 to 8 of the drawings, the pressure gauge 16 of the pre-filter 10 according to the preferred embodiment of the present invention is disposed in communication with the water supply path 110 of the pre-filter 10 to detect and display the pressure of the pre-filter 10 on the treated water obtained by filtering the raw water. Preferably, the pressure gauge 16 is provided at the control assembly 14. Optionally, the pressure gauge 16 is provided at the filter assembly 15.

As shown in fig. 1 to 8 of the drawings, the indexing unit 143 of the pre-filter 10 according to the preferred embodiment of the present invention has a station indicator, wherein the indexing unit 143 cooperates with the control body 141 to drive the control assembly 14 to different stations. More specifically, the transposition unit 143 drives the control body 141 to switch between a water supply station, a forward washing station, a reverse washing station, and a stop station. Preferably, the station operating knob 1432 is rotated until the station indicator of the station indicating part 1431 points to the corresponding identifier provided on the station operating knob 1432, then the pre-filter 10 is located at the station represented by the identifier pointed to by the station indicator. In other words, the station operation knob 1432 is set to enable the user to rotate the movable valve plate 70 of the control valve 80 through the user, so as to selectively communicate the channel of the movable valve plate 70 with the channel of the fixed valve plate 60, thereby switching the pre-filter to the water supply working position, the backwashing working position, the forward washing working position and the stop working position. As shown in fig. 1 to 27 of the drawings, according to the preferred embodiment of the present invention, the present invention further provides a prefilter 10, which comprises a control module 14 and a filtering module 15, wherein the filtering module 15 comprises an outer tube 151 and a filter element 152, the filter element 152 is disposed in the outer tube 151 to form a filtering environment, wherein the control module 14 has a water inlet 11, a water outlet 12 and a sewage outlet 13, and wherein the control module 14 is configured to selectively control the water inlet 11, the water outlet 12, the outer tube 151, the filter element 152 and the sewage outlet 13 to form a corresponding water path.

As shown in fig. 1 to 27 of the drawings, the control assembly 14 of the pre-filter 10 according to the preferred embodiment of the present invention selectively controls the water inlet 11, the water outlet 12, the outer tube 151, the filter element 152 and the sewage outlet 13 at the water supply station, the backwashing station and the forward washing station to form corresponding water paths.

As shown in fig. 1 to 27 of the drawings, when the pre-filter 10 according to the preferred embodiment of the present invention is located at the water supply station, the pre-filter 10 forms a water supply path sequentially connecting the water inlet 11, the outer tube 151, the filter element 152 and the water outlet 12.

As shown in fig. 1 to 27 of the drawings, when the prefilter 10 according to the preferred embodiment of the present invention is located at the backwashing station, the prefilter 10 forms a backwashing water path sequentially communicating the water inlet 11, the filter element 152, the outer tube 151 and the sewage outlet 13.

As shown in fig. 1 to 27 of the drawings, when the pre-filter 10 according to the preferred embodiment of the present invention is located at the forward washing station, the pre-filter 10 forms a forward washing water path sequentially connecting the water inlet 11, the outer tube 151, the filter core 152 and the sewage outlet 13.

As shown in fig. 1 to 27 of the drawings, when the pre-filter 10 according to the preferred embodiment of the present invention is in the stop position, the communication between the water inlet 11 of the pre-filter 10 and the first opening 1501 of the filter assembly 15 is cut off or interrupted. The water inlet 11 and the water outlet 12 of the pre-filter 10 are disconnected.

As shown in fig. 1 to 27 of the drawings, the control assembly 14 of the pre-filter 10 according to the preferred embodiment of the present invention includes a direction-changing member 142, and the direction-changing member 142 provides a plurality of installation directions so as to connect an external pipe.

It will be understood by those skilled in the art that the embodiments of the present invention as described above and shown in the drawings are given by way of example only and are not limiting of the present invention.

The objects of the present invention have been fully and effectively accomplished. The functional and structural principles of the present invention have been shown and described in the embodiments, and any variations or modifications may be made without departing from the principles of the present invention.

Claims (26)

1. A pre-filter, comprising:

a water inlet;

a water outlet;

a filter assembly including an outer tube and a filter element, wherein the filter assembly has a first opening, a second opening, and a water channel, wherein the first opening of the filter assembly is in communication with the water channel, the water channel being formed between the filter element and the outer tube; and

and the drain outlet is arranged on the front filter, and a backwashing water path communicated with the water inlet, the second opening, the water channel, the first opening and the drain outlet in sequence is formed when the front filter is arranged at a backwashing station.

2. The prefilter of claim 1 further comprising a control assembly, wherein the control assembly comprises a control body, wherein the control body is a control valve, wherein the control valve comprises a valve body, a fixed valve plate and a movable valve plate, wherein the valve body forms an inner cavity, the fixed valve plate is provided with a first channel, a second channel and a third channel, the movable valve plate is provided with a fourth channel and a fifth channel, wherein the fixed valve plate and the movable valve plate of the control valve are both arranged in the inner cavity, wherein the inner cavity is respectively communicated with the water inlet and the fourth channel of the control valve, the first channel is communicated with the first opening, the second channel is communicated with the second opening, and the third channel is communicated with the water outlet.

3. The pre-filter of claim 1, wherein the pre-filter, when positioned in a water supply station, defines a water supply path that communicates with the water inlet, the first opening, the water channel, the second opening, and the water outlet in sequence.

4. The prefilter of claim 2 wherein, when said prefilter is disposed at a water supply station, said movable valve plate of said control valve is rotated relative to said fixed valve plate until said fourth channel of said movable valve plate communicates with said first channel of said fixed valve plate, said fifth channel of said movable valve plate communicates with said second channel and said third channel of said fixed valve plate, respectively, thereby forming a water supply path sequentially communicating said water inlet, said internal cavity, said fourth channel, said first opening, said water channel, said second opening, said second channel, said fifth channel, said third channel, and said water outlet.

5. The pre-filter of claim 1, wherein communication between the water inlet and the first opening of the filter assembly is cut off when the pre-filter is positioned in a stop position.

6. The pre-filter of claim 4, wherein communication between said water inlet and said first opening of said filter assembly is shut off by said control valve when said pre-filter is positioned in a stop position.

7. The prefilter of claim 4 wherein said movable plate of said control valve further comprises a sixth channel, said stationary plate further comprises a seventh channel, wherein said seventh channel of said stationary plate is in communication with said waste outlet, wherein when said prefilter is positioned in a backwash station, said movable plate of said control valve is rotated relative to said stationary plate until said fourth channel of said movable plate is in communication with said second channel of said stationary plate, and said sixth channel of said movable plate is in communication with said first channel and said seventh channel of said stationary plate, respectively, to form a communication path in sequence with said water inlet, said internal cavity, said fourth channel, said second opening, said water channel, said first opening, said first channel, A backwashing water channel of the sixth channel, the seventh channel and the sewage draining outlet.

8. The prefilter of claim 6 wherein said movable plate of said control valve further comprises a sixth channel, said stationary plate further comprises a seventh channel, wherein said seventh channel of said stationary plate is in communication with said waste outlet, wherein when said prefilter is positioned in a backwash station, said movable plate of said control valve is rotated relative to said stationary plate until said fourth channel of said movable plate is in communication with said second channel of said stationary plate, and said sixth channel of said movable plate is in communication with said first channel and said seventh channel of said stationary plate, respectively, to form a communication path in sequence with said water inlet, said internal cavity, said fourth channel, said second opening, said water channel, said first opening, said first channel, A backwashing water channel of the sixth channel, the seventh channel and the sewage draining outlet.

9. The pre-filter of claim 3, wherein when the pre-filter is positioned in a forward wash station, a forward wash waterway is formed in communication with the water inlet, the first opening, the water channel, the second opening, and the drain outlet.

10. The prefilter of claim 4 wherein said movable plate of said control valve further comprises a sixth channel, said stationary plate further comprises a seventh channel, wherein said seventh channel of said stationary plate is in communication with said waste outlet, wherein when said prefilter is positioned in a forward washing position, said movable plate of said control valve is rotated relative to said stationary plate until said fourth channel of said movable plate is in communication with said first channel of said stationary plate, and said sixth channel of said movable plate is in communication with said second channel and said seventh channel of said stationary plate, respectively, thereby forming a communication path in which said water inlet, said internal cavity, said fourth channel, said first opening, said water channel, said second opening, said second channel, said first channel, said second channel, and said first channel are in communication with each other, The sixth channel, the seventh channel and the positive washing waterway of the sewage draining exit.

11. The prefilter of claim 6 wherein said movable plate of said control valve further comprises a sixth channel, said stationary plate further comprises a seventh channel, wherein said seventh channel of said stationary plate is in communication with said waste outlet, wherein when said prefilter is positioned in a forward washing position, said movable plate of said control valve is rotated relative to said stationary plate until said fourth channel of said movable plate is in communication with said first channel of said stationary plate, and said sixth channel of said movable plate is in communication with said second channel and said seventh channel of said stationary plate, respectively, thereby forming a communication path in which said water inlet, said internal cavity, said fourth channel, said first opening, said water channel, said second opening, said second channel, said first channel, said second channel, and said first channel are in communication with each other, The sixth channel, the seventh channel and the positive washing waterway of the sewage draining exit.

12. The pre-filter of claim 7, wherein when the pre-filter is disposed at a normal washing station, the movable valve plate of the control valve is rotated relative to the fixed valve plate until the fourth channel of the movable valve plate is communicated with the first channel of the fixed valve plate, and the sixth channel of the movable valve plate is respectively communicated with the second channel and the seventh channel of the fixed valve plate, thereby forming a normal washing water path sequentially communicating the water inlet, the inner cavity, the fourth channel, the first opening, the water channel, the second opening, the second channel, the sixth channel, the seventh channel and the sewage outlet.

13. The pre-filter of claim 3, wherein communication between the water inlet and the first opening of the filter assembly is cut off when the pre-filter is positioned in a stop position.

14. The pre-filter of claim 12, wherein communication between said water inlet and said first opening of said filter assembly is blocked by said control valve when said pre-filter is positioned in a stop position.

15. The pre-filter of claim 2, 4, 6, 7, 8, 10, 11, 12, or 14, wherein the control assembly further comprises a reversing element, the control valve further having an interface, wherein the interface is removably coupled to the reversing element, wherein the interface has a first interface and a second interface, and wherein the reversing element has a first reversing interface and a second reversing interface, wherein the first interface is in communication with the interior chamber and the second interface is in communication with the third channel, wherein the first reversing interface is in communication with the first interface and the water inlet, respectively, and the second reversing interface is in communication with the second interface and the water outlet, respectively.

16. The prefilter of claim 15 wherein said diverter element of said control assembly is disposed for rotation relative to said control valve.

17. The prefilter of claim 16 wherein said reversing element is a universal joint.

18. The pre-filter of claim 2, 4, 6, 7, 8, 10, 11, 12 or 14, further comprising a station operating knob, wherein the station operating knob is configured to enable a user to rotate the movable flap of the control valve therethrough.

19. The pre-filter according to claim 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 16 or 17, further comprising a washing brush and a washing operation knob, wherein the washing operation knob is rotatably coupled to the washing brush.

20. The prefilter of claim 19 wherein said cleaning brush is disposed between said filter element and said outer tube.

21. The prefilter of claim 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 16 or 17 wherein said filter element of said filter assembly further comprises an inner core and a screen, said inner core being disposed within said screen.

22. The pre-filter of claim 2, 4, 6, 7, 8, 10, 11, 12, 14, 16, or 17, wherein the control assembly further comprises a pressure gauge disposed on the control assembly.

23. The prefilter of claim 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 16 or 17 further comprising a registration element, wherein said registration element is disposed on said filter assembly.

24. The pre-filter of claim 2, 4, 6, 7, 8, 10, 11, 12, 14, 16, or 17, further comprising a registration element, wherein the registration element is disposed on the control assembly.

25. The prefilter of claim 23 wherein the recording element is a january ring.

26. The prefilter of claim 24 wherein the recording element is a january ring.

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