CN214344899U

CN214344899U - Double-scraping device for pre-filter

Info

Publication number: CN214344899U
Application number: CN202023287803.XU
Authority: CN
Inventors: 张雷
Original assignee: Suzhou Tengna Environmental Technology Co ltd
Current assignee: Suzhou Tengna Environmental Technology Co ltd
Priority date: 2020-12-30
Filing date: 2020-12-30
Publication date: 2021-10-08
Anticipated expiration: 2030-12-30

Abstract

The utility model belongs to the technical field of water treatment, a two scraping and washing devices of leading filter are related to. Comprises a bottle body, an outer bracket, a filter element and a cleaning strip. The outer support is installed in the inner chamber of bottle, and the outer support includes first outer support and second outer support, and first outer support rotationally installs in the outer support of second. The outer wall of first outer support is provided with the holding tank, and the diapire of holding tank is provided with the perforation. The filter element is positioned in the inner cavity of the outer bracket. The cleaning strip comprises a strip body, a first scraping and washing part arranged on one side surface of the strip body and a second scraping and washing part arranged on the other side surface of the strip body. The holding tank is stretched out to first portion of scraping and washing portion at least part to with the inner wall contact of bottle, the perforation is stretched into to the second portion of scraping and washing, with the surface contact of filter core. When the first outer support is rotated, the first scraping and washing part scrapes and washes the inner wall of the bottle body. The second scraping and washing part scrapes and washes the outer surface of the filter element. The utility model discloses the washing strip that sets up can further improve the effect of wasing leading filter.

Description

Double-scraping device for pre-filter

Technical Field

The utility model belongs to the technical field of water treatment, a two scraping and washing devices of leading filter are related to.

Background

In urban water supply, the quality of water for household use is deteriorated and the control of water using equipment is disabled due to secondary pollution such as rust, silt and the like in a pipeline, and the service life of other household appliances related to water use is reduced, even great potential safety hazards are generated, so that a pre-filter is required to be installed to improve the quality of water and protect the household water using equipment.

The pre-filter in the current market mainly comprises a forward flushing type, a siphon flushing type, a back flushing type and the like. However, different types of pre-filters suffer from different problems:

the flushing intensity of the forward flushing prefilter is very weak, the filter element is easy to block, and not only small impurities can not be flushed out, but also the filter element is embedded deeper and tighter, so that secondary pollution is easy to occur. Consumers need to open the shell to take the filter element out for brushing by the toothbrush, and the filter element can be cleaned up, which is time-consuming and labor-consuming.

The siphon type prefilter has a complicated structure and is not thoroughly washed. Impurities are easily embedded deeper and tighter in the filter element, which causes secondary pollution and even finally leads to the blockage of the filter element. Once the cartridge becomes clogged, maintenance is very difficult. On the other hand, most siphon-type prefilter products also require a filter precision to be configured in order to achieve a flushing effect.

The backwashing type prefilter is technically improved compared with other prefilters, but trapped objects blocked in filter screen holes are not easy to wash out, and troubles are brought to users because filter bottles need to be opened to take out the filter screens and auxiliary tools such as brushes and air guns are used for cleaning.

In addition, the interior walls of the pre-filter vial also need to be periodically cleaned. The above-mentioned flushing manner cannot clean the inner wall of the bottle body.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a two scraping and washing devices of leading filter to improve the cleaning performance.

To achieve the purpose, the utility model adopts the following technical proposal:

a pre-filter double scrub apparatus comprising:

a bottle body;

the outer support is arranged in the inner cavity of the bottle body and comprises a first outer support and a second outer support, and the first outer support is rotatably arranged on the second outer support; an accommodating groove is formed in the outer wall of the first outer support, and a through hole is formed in the bottom wall of the accommodating groove;

the filter element is positioned in the inner cavity of the outer bracket;

the cleaning strip comprises a strip body, a first scraping and washing part arranged on one side surface of the strip body and a second scraping and washing part arranged on the other side surface of the strip body; the first scraping and washing part at least partially extends out of the accommodating groove to be in contact with the inner wall of the bottle body, and the second scraping and washing part extends into the through hole to be in contact with the outer surface of the filter element.

Preferably, in the above pre-filter double scraping device, the number of the holding tanks is at least two, and at least two holding tanks are uniformly distributed along the circumferential direction.

Preferably, in the pre-filter double scraping device, the number of the second scraping parts of each cleaning strip is at least two, and at least two second scraping parts are arranged at intervals to form an interval area; the spaced regions of one of the cleaning strips are circumferentially aligned with one of the second wiping portions of the remaining cleaning strips.

Preferably, in the above pre-filter double scraping device, the number of the accommodating grooves is two.

Preferably, in the above-mentioned prefilter double scraping device, the cleaning strip is integrally injection-molded.

Preferably, in the above pre-filter double scraping device, the number of the first scraping portions is one, and the first scraping portions extend parallel to the axis of the bottle body.

Preferably, in the above pre-filter double scraping device, the first outer bracket is connected with the second outer bracket in a clamping manner.

Preferably, in the above pre-filter double-scraping device, the pre-filter double-scraping device further includes an inner bracket located in the inner cavity of the filter element, and a rotating sleeve, the rotating sleeve is rotatably mounted on the inner bracket, and the inner cavity of the rotating sleeve forms an inlet cavity; the peripheral wall of the rotating sleeve is provided with three through holes, and the three through holes are uniformly distributed in the circumferential direction and are respectively arranged at the upper section, the middle section and the lower section of the rotating sleeve; three through holes are inclined along the clockwise direction or the anticlockwise direction.

Preferably, in the above-described double pre-filter washing apparatus, the rotating sleeve has a thickened portion, and the through hole is provided in the thickened portion.

Preferably, in the above pre-filter double scraping device, the side wall of the through hole is a curved surface.

The utility model discloses a two scraping of leading filter wash device's beneficial effect lies in: when the first outer support is rotated, the first scraping and washing part scrapes and washes the inner wall of the bottle body. The second scraping and washing part scrapes and washes the outer surface of the filter element. The utility model discloses the washing strip that sets up can further improve the effect of wasing leading filter.

Drawings

FIG. 1 is an overall view of a pre-filter double scraping device according to an embodiment of the present invention;

FIG. 2 is a front view of a filter assembly of a pre-filter double scrub appliance according to an embodiment of the present invention;

fig. 3 is a perspective view of a filter assembly of a pre-filter double scraping device according to an embodiment of the present invention;

fig. 4 is an exploded view of a filter assembly of a pre-filter double scrub appliance according to an embodiment of the present invention;

FIG. 5 is a perspective view of a rotating sleeve of a pre-filter double scrub appliance according to an embodiment of the present invention;

FIG. 6 is a top view of a rotating sleeve of a pre-filter double scrub appliance according to an embodiment of the present invention;

FIG. 7 is a front perspective view of a cleaning strip in accordance with an embodiment of the present invention;

fig. 8 is a back perspective view of a cleaning strip in accordance with an embodiment of the present invention.

The component names and designations in the drawings are as follows:

the filter comprises an inner bracket 10, a main body end 11, a rotating sleeve 20, a thickening part 21, a through hole 211, a filter element bracket 30, an outer bracket 40, a first outer bracket 41, a containing groove 411, a perforation 412, a second outer bracket 42, a first water inlet 421, a bottle body 50, a raw water inlet 51, a purified water outlet 52, a sewage outlet 53, a knob 54, a cleaning strip 60, a strip body 61, a first scraping and washing part 62 and a second scraping and washing part 63.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not limiting of the invention. It should be further noted that, for the convenience of description, only some of the structures related to the present invention are shown in the drawings, not all of the structures.

In the description of the present invention, unless expressly stated or limited otherwise, the terms "connected," "connected," and "fixed" are to be construed broadly, e.g., as meaning permanently connected, detachably connected, or integral to one another; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

In the present disclosure, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may comprise direct contact between the first and second features, or may comprise contact between the first and second features not directly. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.

In the description of the present embodiment, the terms "upper", "lower", "right", etc. are used in an orientation or positional relationship based on that shown in the drawings only for convenience of description and simplicity of operation, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used only for descriptive purposes and are not intended to have a special meaning.

As shown in fig. 1, the present embodiment discloses a pre-filter double scraping apparatus. The double scraping and washing device of the pre-filter of the embodiment has two states of a normal working state and a filter element cleaning state.

The pre-filter double-scraping device of the present embodiment includes a bottle 50, and the bottle 50 is provided with a raw water inlet 51 and a purified water outlet 52. The bottle 50 has a filter element (not shown) therein. In a normal operation state, water entering the bottle 50 from the raw water inlet 51 is filtered by the filter element and then flows out from the purified water outlet 52 for a user to use.

In order to facilitate the sewage discharge, the bottle body 50 is further provided with a sewage discharge outlet 53 and a knob 54 for controlling the opening or closing of the sewage discharge outlet 53. When the filter element needs to be cleaned, water entering the bottle 50 from the raw water inlet 51 cleans the filter element, and after cleaning is completed, sewage is discharged through the sewage outlet 53. Then, the drain 53 is closed again, and the pre-filter double scraping device enters a normal working state.

The pre-filter double scraping device of the present embodiment further comprises an inner support 10 and a rotating sleeve 20. The rotating sleeve 20 is rotatably mounted to the inner housing 10, and the inner cavity of the rotating sleeve 20 forms an inlet chamber. The inner frame 10 also has an inner cavity and a hollow structure. Both ends of the inner bracket 10 protrude outside the rotating sleeve 20. Three through holes 211 are opened at the peripheral wall of the rotating sleeve 20, and the three through holes 211 are uniformly distributed in the circumferential direction and are respectively arranged at the upper section, the middle section and the lower section of the rotating sleeve 20. The three through holes 211 are each inclined in a clockwise direction or an anticlockwise direction. The filter element is mounted on the inner bracket 10 and sleeved outside the rotating sleeve 20.

When the filter element is cleaned, water entering the raw water inlet 51 enters the inner cavity of the rotary sleeve 20, when the water flows out from the three through holes 211, the rotary sleeve 20 rotates under the action of water flow, and the water flowing out from the three through holes 211 is sprayed to the filter element in a rotating state, so that the cleaning effect on the filter element is improved.

As shown in fig. 5 and 6, in the present embodiment, the rotating sleeve 20 has a thickened portion 21, and a through hole 211 is provided in the thickened portion 21. The embodiment provides the thickened portion 21 to increase the extending length of the through hole 211, so that the inclination angle of the through hole 211 plays a better role, and the rotating sleeve 20 can rotate better when water flows out of the three through holes 211. Specifically, the rotating sleeve 20 has three thickened portions 21, and three through holes 211 are provided on the three thickened portions 21, respectively.

In this embodiment, two opposite sidewalls of the through hole 211 are curved surfaces. In other alternative embodiments, the two opposing sidewalls of the through-hole 211 are beveled.

As shown in fig. 6, in the present embodiment, an intersection point of the center line of the through hole 211 and the circle of the rotating sleeve 20 is defined as a reference point, and an included angle a between the radius of the circle of the rotating sleeve 20 passing through the reference point and the center line is an obtuse angle, and the obtuse angle is 110 ° to 170 °. For example, the obtuse angle is 110 °, 120 °, 130 °, 160 °, or 170 °. The rotating sleeve 20 rotates more smoothly at this moment, and the effect of water flow for cleaning the filter element is better.

In this embodiment, the thickness of the thickened portion 21 is 1.2 to 3 times the thickness of the rest of the rotating sleeve 20. For example, the thickness of the thickened portion 21 is 1.2 times, 2 times or 3 times the thickness of the rest of the rotating sleeve 20. The rotating sleeve 20 rotates more smoothly at this time, which is beneficial to improving the effect of cleaning the filter element.

As shown in fig. 2-4, the double scraping device of the pre-filter of the present embodiment further includes a filter core frame 30, the filter core frame 30 is sleeved outside the rotating sleeve 20 and is spaced from the rotating sleeve 20, and a filter core is installed on the filter core frame 30. The filter element frame 30 has a hollow structure for water to pass through. The filter element frame 30 is spaced from the rotary sleeve 20 by a distance, so that the filter element is spaced from the rotary sleeve 20 by a distance, water sprayed from the through holes 211 acts on the filter element with a certain action force, impurities attached to the outer surface of the filter element are washed from inside to outside, and the effect of cleaning the filter element is ensured.

The pre-filter double scraping device of the present embodiment further includes an outer bracket 40, the outer bracket 40 is installed in the inner cavity of the bottle body 50, and the inner bracket 10, the rotary sleeve 20 and the filter element are all installed in the inner cavity of the outer bracket 40. The interior cavity of the filter element forms a first flow path and a second flow path is formed between the outer surface of the filter element and the inner wall of the vial 50. Under the normal working condition, water entering from the raw water inlet 51 enters the second water flow channel through the first water inlet 421, then enters the first water flow channel through the filtration of the filter element, and finally is discharged from the purified water outlet 52.

A return spring is installed in the outer bracket 40. The inner frame 10 of the pre-filter double scraping device of the present embodiment is reciprocally movable by the siphon and the return spring to switch the water flow direction so that the water flow flows from the first water flow passage to the second water flow passage or from the second water flow passage to the first water flow passage. Specifically, in a state of cleaning the filter element, the drain outlet 53 is opened, and the main body end 11 of the inner bracket 10 moves downward by a certain distance under the siphon action to switch the water flow passage, so that the water entering from the raw water inlet 51 enters the inner cavity of the filter element at the top through the first water inlet 421, and then enters the inner cavity of the rotary sleeve 20, i.e., the inner cavity of the filter element. The sewage after the filter element is cleaned enters the second water flow channel and is finally discharged from the sewage discharge port 53.

In this embodiment, the external frame 40 includes a first external frame 41 and a second external frame 42, and the first external frame 41 and the second external frame 42 are detachably connected to facilitate the assembly and disassembly of the external frame 40. For example, first outer bracket 41 snap fits with second outer bracket 42. The first outer bracket 41 is positioned below the second outer bracket 42 and has a length longer than that of the second outer bracket 42. The first water inlet 421 is provided to the second outer holder 42. The return spring is mounted at the bottom of the inner cavity of the first outer bracket 41 and abuts against the inner bracket 10.

In this embodiment, the water flow out of the through holes 211 and the water flow in from the through holes 211 drive the rotating sleeve 20 to rotate in opposite directions, respectively.

In this embodiment, the inner support 10, the rotary sleeve 20, the filter cartridge support 30, the filter cartridge, and the outer support 40 are assembled into a filter assembly, which can be integrally installed in the bottle body 50 or removed from the bottle body 50.

As shown in fig. 3, the first outer support 41 of this embodiment is rotatable with respect to the second outer support 42. Specifically, the inner wall of the end of the first outer bracket 41 facing the second outer bracket 42 is provided with at least two catching strips extending in the circumferential direction. Accordingly, the outer circumferential surface of the end of the second outer bracket 42 facing the first outer bracket 41 has an annular catching groove. The clamping strip is in clamping fit with the clamping groove, and the clamping strip can rotate in the clamping groove, so that the first outer support 41 can rotate relative to the second outer support 42.

As shown in fig. 3, the outer wall of the first outer bracket 41 is provided with a receiving groove 411. The receiving groove 411 extends in parallel to the axial direction of the first outer bracket 41. The number of the receiving grooves 411 may be two. The two accommodation grooves 411 are evenly distributed in the circumferential direction. In other alternative embodiments, the number of the receiving slots 411 may also be one, three, four, etc.

As shown in fig. 3, 7 and 8, the cleaning strip 60 is mounted in the receiving groove 411. The bottom of the receiving groove 411 has a through hole 412. The cleaning strip 60 includes a strip body 61, a first scraping portion 62 provided at one side of the strip body 61, and a second scraping portion 63 provided at the other side of the strip body 61. The first scraping and washing part 62 is at least partially protruded out of the receiving groove 411 to contact the inner wall of the bottle body 50. The second scraping and washing portion 63 extends into the through hole 412 to contact the outer surface of the filter element. When the first outer holder 41 is rotated, the first scraping and washing part 62 scrapes the inner wall of the bottle body 50. The second scraping and washing section 63 scrapes the outer surface of the filter element. The cleaning strip 60 provided in this embodiment can further improve the effect of cleaning the pre-filter. Especially, the effect of cleaning the filter element is better when the rotary spray cleaning is matched with the scraping and cleaning of the cleaning strip 60.

Since the second scraping and washing part 63 is in contact with the outer surface of the filter element and the outer surface of the filter element is relatively rough, in order to reduce the friction between the second scraping and washing part 63 and the outer surface of the filter element and enable the first outer bracket 41 to smoothly rotate, the number of the second scraping and washing parts 63 of the present embodiment is at least two, for example, the number of the second scraping and washing parts 63 is three. The three second scraping and washing sections 63 are spaced apart along the length direction of the washing bar 60 to form spaced regions. The second scraping and washing parts 63 of the two washing strips 60 are staggered and arranged and are subjected to mutual leakage repairing so as to wash the whole outer surface to be washed of the filter element and prevent missing parts.

The cleaning strip 60 of this embodiment may be an elastic rubber strip, integrally injection molded.

It is obvious that the above embodiments of the present invention are only examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. Numerous obvious variations, rearrangements and substitutions will now occur to those skilled in the art without departing from the scope of the invention. And are neither required nor exhaustive of all embodiments. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the claims of the present invention.

Claims

1. A dual pre-filter scrub unit comprising:

a bottle body (50);

the outer support (40), the outer support (40) is installed in the inner cavity of the bottle body (50), the outer support (40) comprises a first outer support (41) and a second outer support (42), and the first outer support (41) is rotatably installed on the second outer support (42); an accommodating groove (411) is formed in the outer wall of the first outer support (41), and a through hole (412) is formed in the bottom wall of the accommodating groove (411);

a filter element located within the interior cavity of the outer support (40);

a cleaning strip (60), wherein the cleaning strip (60) comprises a strip body (61), a first scraping part (62) arranged on one side surface of the strip body (61) and a second scraping part (63) arranged on the other side surface of the strip body (61); the first scraping and washing part (62) at least partially extends out of the accommodating groove (411) to be in contact with the inner wall of the bottle body (50), and the second scraping and washing part (63) extends into the through hole (412) to be in contact with the outer surface of the filter element.

2. Double pre-filter scraping device according to claim 1, characterized in that the number of said holding tanks (411) is at least two, at least two of said holding tanks (411) being evenly distributed along the circumferential direction.

3. The double pre-filter scraping device according to claim 2, wherein the number of the second scraping portions (63) of each cleaning strip (60) is at least two, and at least two of the second scraping portions (63) are arranged at intervals to form an interval area; the spaced-apart regions of one of the cleaning strips (60) are circumferentially aligned with one of the second scraping portions (63) of the remaining cleaning strips (60).

4. Double pre-filter scraping device according to claim 2, characterized in that the number of the receiving grooves (411) is two.

5. Double pre-filter scraping device according to claim 1, wherein the cleaning strips (60) are integrally injection moulded.

6. The dual pre-filter wiping device as set forth in claim 1, wherein the number of the first wiping portions (62) is one, and the first wiping portions (62) extend parallel to the axis of the bottle body (50).

7. Double pre-filter scraping device according to claim 1, characterized in that the first outer support (41) is snap-connected to the second outer support (42).

8. The dual pre-filter scraping apparatus of claim 1, further comprising an inner support (10) and a rotating sleeve (20) within the inner chamber of the filter cartridge, wherein the rotating sleeve (20) is rotatably mounted to the inner support (10) and the inner chamber of the rotating sleeve (20) forms an inlet chamber; the peripheral wall of the rotating sleeve (20) is provided with three through holes (211), the three through holes (211) are uniformly distributed in the circumferential direction and are respectively arranged at the upper section, the middle section and the lower section of the rotating sleeve (20); the three through holes (211) are all inclined along the clockwise direction or the anticlockwise direction.

9. Front filter double scraping device according to claim 8, characterized in that the rotating sleeve (20) has a thickening (21), the through hole (211) being provided in the thickening (21).

10. The twin lead-filter scraping apparatus according to claim 8, wherein the side walls of the through-holes (211) are curved.