CN209848469U - Prefilter with bypass function - Google Patents

Abstract

The utility model discloses a pre-filter with bypass function, which comprises a knob component, a water path switching valve component, a filter component and a drain valve component, 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 hole, a water outlet hole, a backwashing water passing hole and a filtering water passing hole arranged above the adjacent water inlet hole; the middle of the waterway switching valve is provided with a middle groove body, the periphery of the middle groove body and the inner side of the waterway switching valve are equally divided into six groove bodies, a second virtual groove body is vertically divided into a first area and a second area, the first groove body, the third groove body and the fourth groove body are communicated, and the second area, the sixth virtual groove body and the middle groove body are communicated to form a continuous 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

Prefilter with bypass function

Technical Field

The utility model relates to a leading filter with bypass function.

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 with a bypass function.

The utility model discloses a following technical scheme realizes: a pre-filter with a bypass function 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, 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 are formed in the seat body, and the filtering water passing hole is arranged above the water inlet hole in a position adjacent to the water inlet hole; the water route diverter valve includes a body that has the accommodation space, the body includes a top cap, 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 between the inboard of body, the virtual cell body of second, third cell body, fourth cell body, fifth cell body and the virtual cell body of sixth, wherein, separate into first region and the second region that each other does not communicate from top to bottom in the virtual cell body of second, first region is located the top cap with between the second region, first cell body, third cell body and fourth cell body are the intercommunication, the second region the virtual cell body of sixth with middle cell body intercommunication forms 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, one end of the fifth groove body opposite to the top cover is closed.

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

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 bisector of the filtering water hole is coincided with the straight line when rotating 60 degrees counterclockwise.

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 diagrams of the working process of the pre-filter with bypass function according to 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 with the bypass function comprises a knob assembly 1, a waterway switching valve assembly and a filter assembly 4 which are connected in sequence, wherein the knob assembly 1 can drive the waterway switching 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; the water inlet hole 22a and the water outlet hole 22b are respectively disposed on two opposite sides of the backwashing water hole 22c, the center points of the water inlet hole 22a, the backwashing water hole 22c and the water outlet hole 22b are located on the same straight line L, and the filtering water hole 22d is located above the water inlet hole 22a, i.e., the filtering water hole 22d is disposed above the water inlet hole 22a as shown in fig. 3, preferably, the bisector of the filtering water hole 22d is coincident with the straight line L when the counterclockwise rotation angle α is 60 °. The waterway switching valve 3 comprises a body 31 with a top cover b 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 bisectors of the grooves is 60 °), which are respectively a first groove 51, a second virtual groove 52, a third groove 53, a fourth groove 54, a fifth groove 55 and a sixth virtual groove 56, the first groove 51 is separated from the second virtual groove 52 and the sixth virtual groove 56 by a barrier wall c, which is non-communicated, the middle groove 50 is separated from the first groove 51, the third groove 53, the fourth groove 54 and the fifth groove 55 by a barrier wall, the second virtual groove 52 is separated from the first area and the second area which are not communicated up and down, the first area is located between the top cover b and the second area of the body, wherein the first region, the first groove 51, the third groove 53 and the fourth groove 54 are communicated, the second region is communicated with the sixth virtual groove 56 and the middle groove 50 to form a continuous groove d, preferably, the upper end of the fifth groove 55, i.e. the other end opposite to the top cover, is closed, i.e. is provided with a cover (not shown), more preferably, the shape of the special-shaped sealing gasket is consistent with the structure of the groove in the body 31, and the region corresponding to the continuous groove d is an unobstructed continuous region.

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 third tank 53 is aligned with the water inlet 22a, the fourth tank 54 is aligned with the filtering water hole 22d, and the sixth virtual tank 56 is aligned with the water outlet 22b, so that the water flows in from the water inlet channel 21 and flows into the third tank 53 and the fourth tank 54 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 fourth tank 54 through the filtering water hole 22d, and finally the filtered water flows into the water outlet channel 23 from the first cavity 421 through the intermediate tank 50, the sixth virtual tank 56 and the water outlet 22b in sequence to form final filtered water; when the knob component 1 is utilized to drive the waterway switching valve component to rotate 60 degrees clockwise, and the drainage valve component 43 is opened at the same time, namely, in the state B of fig. 4B, the second region of the second virtual tank body 52 is just opposite to the water inlet 22a, because the second region of the second virtual tank body 52 is communicated with the middle tank body 50, water flows through the water inlet 22a, the second region, the middle tank body 50 and the backwashing water holes 22c from the water inlet channel 21 in sequence, and flows through the backwashing water holes 22c to the first cavity 421 and the second cavity 422 of the filtering component 4 in sequence for flushing, so that the flushed sewage directly flows out of the drainage valve component 43, and the backwashing work is completed; when the waterway switching valve assembly is continuously rotated by 60 degrees clockwise, the drain valve assembly 43 is closed, i.e. the state C of 4C in the drawing, at this time, the first slot 51 is just opposite to the water inlet 22a, and the fourth slot 54 is just opposite to the water outlet 22b, because the first slot 51 and the sixth virtual slot 56 are not communicated, the water flow does not flow into the filter assembly 4, but flows through the first area of the second virtual slot 52, the third slot 53 and the fourth slot 54 in sequence from the first slot 51, and flows to the water outlet channel 23 through the water outlet 22b from the fourth slot 54, so as to form bypass water outlet. 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 with a bypass function is characterized by comprising 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, and the filtering water passing hole is arranged above the water inlet hole in a position adjacent to the water inlet hole; the water route diverter valve includes a body that has the accommodation space, the body includes a top cap, 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 between the inboard of body, the virtual cell body of second, third cell body, fourth cell body, fifth cell body and the virtual cell body of sixth, wherein, separate into first region and the second region that each other does not communicate from top to bottom in the virtual cell body of second, first region is located the top cap with between the second region, first cell body, third cell body and fourth cell body are the intercommunication, the second region the virtual cell body of sixth with middle cell body intercommunication forms a continuous cell body.

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

3. The prefilter of claim 1 wherein an end of said fifth channel opposite said top cover is closed.

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 the configuration of the channel in said waterway switch valve.

5. The pre-filter with the bypass function as recited in claim 1, wherein the waterway switching valve further comprises a connecting rod connected to a side of the body opposite to the receiving space, and the knob assembly rotates by driving the connecting rod.

6. The pre-filter with the bypass function as recited in claim 1, wherein the water inlet hole and the water outlet hole are respectively disposed at opposite sides of the backwash water through hole.

7. The pre-filter with the bypass function as recited in claim 1, wherein the center points of the water inlet hole, the backwashing water through hole and the water outlet hole are located on the same straight line.

8. The prefilter having a bypass function according to claim 7 wherein said bisector of said filtered water holes is coincident with said straight line when rotated 60 ° counterclockwise.