CN209828416U - 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, and the seat body is provided with a water inlet hole, a water outlet hole, a backwashing water passing hole and a filtering water passing hole; the waterway switching valve comprises a body with an accommodating space, wherein the middle of the accommodating space is provided with a middle groove body, the area between the periphery of the middle groove body and the inner side of the body is equally divided into a first groove body, a second groove body, a third groove body, a fourth groove body, a fifth groove body and a sixth groove body, wherein the first groove body, the second groove body, the third groove body and the fourth groove body are communicated, and the fifth groove body and the sixth groove body are respectively communicated with the middle groove 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 equally divide into first cell body, second cell body, third cell body, fourth cell body, fifth cell body and sixth cell body between the inboard of body, wherein, first cell body, second cell body, third cell body and fourth cell body are the intercommunication, fifth cell body and sixth cell body respectively with middle cell body intercommunication.

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 upper end of the third groove body is closed, the top of the third groove body is communicated with the second groove body and the fourth groove body, and the filtering water hole is located above the water inlet hole.

Preferably, the waterway switching seat and the waterway switching valve are hermetically connected by a special-shaped sealing gasket.

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, an included angle between a bisector of the filtering water passing hole and the straight line is 60 degrees.

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; preferably, the center points of the water inlet 22a, the backwashing water hole 22c and the water outlet 22b are located on the same straight line L, and an included angle α between the bisector of the filtering water hole 22d and the straight line L is 60 °. 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 the body 31 has a receiving space a, preferably, the projection of the body 31 is a circle, the middle of the receiving space a is provided with a middle groove 50, the area between the periphery of the middle groove 50 and the inner side of the body 31 is equally divided into six equal parts (i.e. the included angle beta between the equal dividing lines of the grooves is 60 °), which are respectively a first groove 51, a second groove 52, a third groove 53, a fourth groove 54, a fifth groove 55 and a sixth groove 56, preferably, the shape of the special-shaped sealing gasket is consistent with the structure in the body 31, wherein the first groove 51, the second groove 52, the third groove 53 and the fourth groove 54 are communicated with each other, the grooves and the middle 50 are separated by a blocking wall b (i.e. the grooves and the middle grooves are not communicated), the fifth groove 55 and the sixth groove 56 are respectively communicated with the middle groove 50, the fifth groove 55 and the fourth groove 54 and the sixth groove 56 are not communicated with each other, for example, it may be spaced by a barrier wall; preferably, the upper end of the third trough body 53 is closed, that is, has a top cover (not shown), the top of the third trough body 53 is communicated with the second trough body 52 and the fourth trough body 54, and the other trough bodies are open at the upper end, at this time, the filtering water passing hole 22d is located above the water inlet hole 22a, that is, the filtering water passing hole 22d is located adjacent to the water inlet hole 22a, and the bisector of the filtering water passing hole 22d rotates counterclockwise by an angle of 60 ° and coincides with the straight line L.

The operation of the pre-filter will be described in detail with reference to fig. 4A to 4C. The initial state a of the prefilter is a filtering state, at this time, the drain valve assembly 43 is closed, the second tank body 52 is aligned with the water inlet 22a, the first tank body 51 is aligned with the filtering water hole 22d, and the fifth tank body 55 is aligned with the water outlet 22b, so that water flows in from the water inlet channel 21 and flows to the second tank body 52 and the first tank body 51 from the water inlet 22a, and then the water flows in the second cavity 422 and the first cavity 421 of the filtering assembly 4 from the first tank body 51 through the filtering water hole 22d in sequence, and finally the filtered water flows in the first cavity 421 through the intermediate tank body 50, the fifth tank body 55 and the water outlet 22b in sequence to the water outlet channel 23, so as to form final filtered water; when the knob assembly 1 is used for driving the waterway switching valve assembly to rotate 60 degrees counterclockwise, that is, in the state B of fig. 4B, the first tank body 51 is aligned with the water inlet 22a, and the fourth tank body 54 is aligned with the water outlet 22B, because the first tank body 51 and the sixth tank body 56 are not communicated, the water flow does not flow into the filtering assembly 4, but flows through the second tank body 52, the third tank body 53 and the fourth tank body 54 in sequence from the first tank body 51, and flows to the water outlet channel 23 from the fourth tank body 54 through the water outlet 22B, so as to form bypass water outlet; when the waterway switching valve component is continuously rotated 60 degrees counterclockwise, and the drainage valve component 43 is opened at the same time, that is, in the state C of 4C in the drawing, at this time, the sixth tank body 56 is just opposite to the water inlet 22a, because the sixth tank body 56 is communicated with the intermediate tank body 50, water flows from the water inlet channel 21 to sequentially flow through the water inlet 22a, the sixth tank body 56, the intermediate tank body 50 and the backwashing water through hole 22C, and sequentially flows from the backwashing water through hole 22C to the first cavity 421 and the second cavity 422 of the filtering component 4, at this time, because the drainage valve component 43 is in the opened state, the water flows out the flushed sewage directly from the drainage valve component 43, and the backwashing work is completed. 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 equally divide into first cell body, second cell body, third cell body, fourth cell body, fifth cell body and sixth cell body between the inboard of body, wherein, first cell body, second cell body, third cell body and fourth cell body are the intercommunication, fifth cell body and sixth cell body respectively with middle cell body intercommunication.

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 the upper end of said third tank is closed, and the top of said third tank is interconnected with said second tank and said fourth tank, and said filter water hole is located above said water inlet.

4. The prefilter of claim 1 wherein said waterway switch seat and said waterway switch valve are sealingly connected by a shaped gasket.

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 bisector of said filtered water holes is at an angle of 60 ° to said line.