CN209865480U - Front filter - Google Patents

Abstract

The utility model discloses a pre-filter, which comprises a knob component, a water path switching valve component, a filter component and a drain valve component which are connected in sequence, wherein the water path switching valve component comprises a water path switching seat and a water path switching valve, the water path switching seat comprises a water inlet channel, a seat body and a water outlet channel, the seat body is provided with a water inlet communicated with the water inlet channel, a water outlet communicated with the water outlet channel, a backwashing water passing hole and a filtering water passing hole; the water route diverter valve is including the body that has the accommodation space, the middle part of accommodation space is provided with middle cell body, the regional separation between the periphery of middle cell body and the inboard of body becomes first virtual cell body and the second cell body that each other does not communicate, wherein, first virtual cell body and second cell body communicate each other and form a continuous cell body. The preposed filter does not need to close a water supply valve before the filter assembly is detached for cleaning the filter screen, can keep continuously supplying water normally, and does not influence the normal water use of a family.

Description

Front filter

Technical Field

The utility model relates to a leading filter.

Background

The pre-filtering operation principle is physical screening, and the main interception substances are large granular substances such as silt, rust, algae and the like. When the filter screen blocks more things and can not be washed clean directly, the water supply valve needs to be closed first, then the filter flask containing the filter screen is detached to wash the filter screen, and at the moment, the water supply is cut off, thus causing great inconvenience to the household water.

Disclosure of Invention

In order to solve the above technical problem, an object of the present invention is to provide a prefilter.

The utility model discloses a following technical scheme realizes: a pre-filter comprises a knob assembly, a water path switching valve assembly, a filtering assembly and a drain valve assembly which are sequentially connected, wherein the water path switching valve assembly comprises a water path switching seat and a water path switching valve, the water path switching seat comprises a water inlet channel, a seat body and a water outlet channel, the seat body is provided with a water inlet communicated with the water inlet channel, a water outlet communicated with the water outlet channel, a backwashing water passing hole and a filtering water passing hole; the water route diverter valve includes a body that has the accommodation space, the middle part of accommodation space is provided with middle cell body, the periphery of middle cell body with regional division between the inboard of body becomes first virtual cell body and the second cell body that does not communicate each other, wherein, first virtual cell body and second cell body communicate each other and form a continuous cell body.

Preferably, the filter assembly comprises a shell and a filter element module arranged in the shell, a first cavity is formed inside the filter element module, a second cavity is formed between the filter element module and the shell at intervals, the first cavity is communicated with the backwashing water through hole, and the second cavity is communicated with the filtering water through hole.

Preferably, the arc angle of the first virtual groove body is 90 degrees.

Preferably, the waterway switching seat and the waterway switching valve are in sealing connection by using a special-shaped sealing gasket, and the special-shaped sealing gasket is consistent with the structure of the continuous groove body.

Preferably, the waterway switching valve further comprises a connecting rod, the connecting rod is connected to one side of the body corresponding to the accommodating space, and the knob assembly drives the connecting rod to rotate.

Preferably, the water inlet hole and the water outlet hole are respectively arranged on two opposite sides of the backwashing water through hole.

Preferably, the central points of the water inlet hole, the backwashing water passing hole and the water outlet hole are positioned on the same straight line.

Preferably, the inlet opening, the apopore or the arc angle of filtering the water hole is 90.

The pre-filter of the utility model does not need to close the water supply valve before the filter assembly is disassembled to clean the filter screen, and only needs to drive the waterway switch valve assembly of the pre-filter to rotate for a certain angle, so that the waterway continues to keep the bypass state, the normal water supply can be kept, and the influence on the normal water of the family is not caused; meanwhile, a normal filtering water path can be cut off, so that the filtering component can be conveniently detached to clean the internal filter screen.

Drawings

In order to more clearly illustrate the technical solution of the present invention, the drawings needed for the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without creative efforts.

Fig. 1 is a sectional view of the present invention.

Fig. 2 is an exploded view of the waterway switch valve assembly of the present invention.

Fig. 3 is a schematic view of the waterway switch seat and the waterway switch valve in a bottom view.

Fig. 4A to 4C are schematic views of the operation process of the pre-filter of the present invention.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by a person of ordinary skill in the art without creative efforts belong to the protection scope of the present invention.

Referring to the attached drawings 1 to 3 in the specification, the prefilter comprises a knob assembly 1, a waterway switch valve assembly and a filter assembly 4 which are connected in sequence, wherein the knob assembly 1 can drive the waterway switch valve assembly to rotate. Wherein, the filter assembly 4 comprises a housing 41 and a filter cartridge module 42 disposed in the housing 41, a first cavity 421 is formed inside the filter cartridge module 42, a second cavity 422 is formed between the filter cartridge module 42 and the housing 41 at a distance, and preferably, the housing 41 can be transparent; the lower end of the cartridge module 42 is provided with the drain valve assembly 43, wherein the drain valve assembly 43 can discharge the backwash water flow of the pre-filter by using the drain ball valve 431 and the drain button 432 in cooperation. The waterway switch valve component comprises a waterway switch seat 2 and a waterway switch valve 3, and the waterway switch seat 2 and the waterway switch valve 3 are connected in a sealing way by a special-shaped sealing gasket. The waterway switching seat 2 comprises a water inlet channel 21, a seat body 22 and a water outlet channel 23, wherein the seat body 22 is provided with a plurality of waterway holes which are respectively a water inlet hole 22a communicated with the water inlet channel 21, a water outlet hole 22b communicated with the water outlet channel 23, a backwashing water passing hole 22c communicated with the first cavity 421 and a filtering water passing hole 22d communicated with the second cavity 422; wherein, this inlet opening 22a and apopore 22b are arranged in this backwash water hole 22 c's relative both sides respectively, and preferred, this inlet opening 22a, backwash water hole 22c and apopore 22 b's central point lie in same straight line L, and the arc angle alpha of inlet opening 22a, apopore 22b or this filtration water hole 22d is 90. The waterway switching valve 3 comprises a body 31 and a connecting rod 32, the connecting rod 32 is connected to one side of the body 31, and the knob component 1 drives the connecting rod 32 to enable the waterway switching valve 3 to be switched in a rotating way; the other side of this body 31 has accommodation space a, preferably, the projection of this body 31 is a circular, this accommodation space a middle part is provided with middle cell body 50, the region between this middle cell body 50 periphery and the body 31 inboard falls into first virtual cell body 51 and second cell body 52, this first virtual cell body 51 and second cell body 52 utilize to keep off wall b and carry out the interval (these cell bodies do not communicate promptly), this first virtual cell body 51 and middle cell body 50 communicate each other and form a continuous cell body c, the shape of the sealed pad of abnormal shape is unanimous with the structure of the continuous cell body c in this body 31, preferably, the arc angle of this first virtual cell body 51 is 90, the arc angle of this second cell body 50 is 270.

The operation of the pre-filter will be described in detail with reference to fig. 4A to 4C. The initial state A of the pre-filter is a backwashing state, at the moment, the drain valve assembly 43 is opened, the first virtual tank body 51 is right opposite to the water inlet hole 22a, as the first virtual tank body 51 and the middle tank body 50 form a continuous tank body c, water flows through the water inlet hole 22a, the first virtual tank body 51, the middle tank body 50 and the backwashing water through hole 22c from the water inlet channel 21 in sequence, and flows to the first cavity 421 and the second cavity 422 of the filter assembly 4 from the backwashing water through hole 22c in sequence, at the moment, as the drain valve assembly 43 is in an opening state, the water flows directly flow out of the flushed sewage from the drain valve assembly 43, and backwashing work is completed; when the knob assembly 1 is used for driving the waterway switching valve assembly to rotate 90 degrees clockwise, namely, in the state B of fig. 4B, the second tank body 52 is opposite to the water inlet 22a and the water outlet 22B, and the first virtual tank body 51 is opposite to the filtering water through hole 22d, because the first virtual tank body 51 is not communicated with the second tank body 52, water flow does not enter the filtering water inlet 22d, but flows into the water inlet 22a and the second tank body 52 from the water inlet channel 21 in sequence, and flows to the water outlet channel 23 from the second tank body 52 through the water outlet 22B, so as to form bypass water outlet; when the waterway switching valve assembly is continuously rotated by 90 degrees clockwise, the drainage valve assembly 43 is closed at the same time, that is, the state C of 4C in the drawing, the second groove body 52 is opposite to the water inlet 22a and the filtering water hole 22d, and the first virtual groove body 51 is opposite to the water outlet 22b, so that the water flows in from the water inlet channel 21 and flows into the second groove body 52 and the filtering water hole 22d from the water inlet 22a in sequence, and then flows into the second cavity 422 of the filtering assembly 4 and the first cavity 421 from the filtering water hole 22d in sequence, and finally, the filtered water flows into the water outlet channel 23 from the first cavity 421 through the middle groove body 50, the first virtual groove body 51 and the water outlet 22b in sequence, and finally, filtered water is formed. The utility model discloses a leading filter utilizes water route to switch seat and water route diverter valve both mutually supporting, for this leading filter has additionally increased bypass water mode, when people need dismantle this leading filter's filter screen and wash, this leading filter still can utilize the mode that this bypass goes out water to continuously supply water, can not cause the influence to the normal water of family, and the structure is simplified, with low costs, very high-efficient practical.

While the foregoing description shows and describes the preferred embodiments of the present invention, it is to be understood that the invention is not limited to the forms disclosed herein, but is not intended to be exhaustive or to exclude other embodiments and may be used in various other combinations, modifications, and environments and is capable of changes within the scope of the inventive concept as expressed herein, commensurate with the above teachings, or the skill or knowledge of the relevant art. But that modifications and variations may be effected by those skilled in the art without departing from the spirit and scope of the invention, which is to be limited only by the claims appended hereto.

Claims (8)

1. A pre-filter is characterized by comprising a knob assembly, a water path switching valve assembly, a filter assembly and a drain valve assembly which are sequentially connected, wherein the water path switching valve assembly comprises a water path switching seat and a water path switching valve, the water path switching seat comprises a water inlet channel, a seat body and a water outlet channel, the seat body is provided with a water inlet hole communicated with the water inlet channel, a water outlet hole communicated with the water outlet channel, a backwashing water passing hole and a filtering water passing hole; the water route diverter valve includes a body that has the accommodation space, the middle part of accommodation space is provided with middle cell body, the periphery of middle cell body with regional division between the inboard of body becomes first virtual cell body and the second cell body that does not communicate each other, wherein, first virtual cell body and second cell body communicate each other and form a continuous cell body.

2. The prefilter of claim 1 wherein said filter assembly comprises a housing and a filter cartridge module disposed in said housing, said filter cartridge module defining a first chamber therein, said filter cartridge module being spaced from said housing to define a second chamber, said first chamber being in communication with said backwash water port, said second chamber being in communication with said filtration water port.

3. The prefilter of claim 1 wherein said first virtual channel has an arc angle of 90 °.

4. The prefilter of claim 1 wherein said waterway switch seat and said waterway switch valve are sealingly connected by a shaped gasket, said shaped gasket conforming to said continuous channel structure.

5. The prefilter of claim 1 wherein said waterway switch valve further comprises a connecting rod, said connecting rod is connected to a side of said body opposite to said containing space, and said knob assembly rotates by driving said connecting rod.

6. The prefilter of claim 1 wherein said inlet openings and said outlet openings are disposed on opposite sides of said backwash water inlet opening.

7. The prefilter of claim 1 wherein the center points of said inlet openings, said backwash water holes and said outlet openings are located on the same line.

8. The prefilter of claim 7 wherein said inlet opening, said outlet opening or said filtered water opening have an arc angle of 90 °.