Pre-filter backwashing rotary spray device

Abstract

The present invention belongs to the technical field of water treatment, and relates to a pre-filter backwashing rotary spraying device. The pre-filter backwashing rotary spraying device comprises an inner bracket, a rotating sleeve and a filter element. The rotating sleeve is rotatably mounted on the inner bracket, and the inner cavity of the rotating sleeve forms a water inlet cavity. The peripheral wall of the rotating sleeve is provided with three through holes, and the three through holes are evenly distributed in the circumferential direction, and are respectively arranged in the upper section, the middle section and the lower section of the rotating sleeve. The three through holes are all inclined in a clockwise direction or in a counterclockwise direction. The filter element is mounted on the inner bracket and is sleeved on the outside of the rotating sleeve. The pre-filter backwashing rotary spraying device of the present invention has the advantage that when the water flow entering the rotating sleeve flows out from the three through holes, the rotating sleeve will rotate under the action of the water flow, and the water flowing out from the three through holes will be sprayed toward the filter element in a rotating state, so as to improve the cleaning effect of the filter element.

Description

Technical Field

[0001] The invention belongs to the technical field of water treatment and relates to a backwashing rotary spraying device for a pre-filter. Background Art

[0002] The city's water supply is polluted by secondary pollution such as rust and sediment in the pipes, which causes the water quality of household water to deteriorate and the control failure of water-using equipment. It also shortens the life of other household appliances involving water and even creates huge safety hazards. Therefore, it is necessary to install a pre-filter to improve water quality and protect household water-using equipment.

[0003] The pre-filters on the market mainly include forward flushing type, siphon flushing type, back flushing type, etc. However, different types of pre-filters have different problems:

[0004] The flushing strength of the pre-filter is very weak, and the filter element is easily blocked. Not only can the smaller impurities not be flushed out, but they are embedded deeper and tighter in the filter element, which is easy to cause secondary pollution. Consumers need to open the shell and take out the filter element to clean it with a toothbrush, which is time-consuming and labor-intensive.

[0005] The structure of the siphon type pre-filter is complicated and the flushing is not thorough. Impurities are easily embedded deeper and tighter in the filter element, causing secondary pollution and even blocking the filter element. Once the filter element is blocked, it is very difficult to maintain. On the other hand, most siphon type pre-filter products also need to be configured with filtering accuracy in order to achieve the flushing effect.

[0006] Compared with other pre-filters, the backwash type pre-filter has some technical improvements, but it is not easy to rinse out the retained matter blocked in the filter holes. It is still necessary to open the filter bottle and take out the filter, and clean it with auxiliary tools such as brushes and air guns, which will also cause trouble to users. Summary of the invention

[0007] The object of the present invention is to provide a pre-filter backwashing rotary spray washing device to improve the effect of cleaning the filter element.

[0008] To achieve this object, the present invention adopts the following technical solutions:

[0009] A pre-filter backwashing rotary spray washing device, comprising:

[0010] Internal support;

[0011] A rotating sleeve, the rotating sleeve is rotatably mounted on the inner bracket, and the inner cavity of the rotating sleeve forms a water inlet cavity; the peripheral wall of the rotating sleeve is provided with three through holes, the three through holes are evenly distributed in the circumferential direction, and are respectively arranged in the upper section, the middle section and the lower section of the rotating sleeve; the three through holes are all inclined in the clockwise direction or the counterclockwise direction;

[0012] A filter element is installed on the inner bracket and sleeved outside the rotating sleeve.

[0013] Preferably, in the above-mentioned pre-filter backwashing rotary spraying device, the rotating sleeve has a thickened portion, and the through hole is arranged in the thickened portion.

[0014] Preferably, in the above-mentioned pre-filter backwashing rotary spraying device, the side wall of the through hole is a curved surface or an inclined surface.

[0015] Preferably, in the above-mentioned pre-filter backwashing rotary spraying device, the intersection of the center line of the through hole and the circle where the rotating sleeve is located is defined as the reference point, and the angle between the radius of the circle where the rotating sleeve is located passing through the reference point and the center line is an obtuse angle, and the obtuse angle is 110°-170°.

[0016] Preferably, in the above-mentioned pre-filter backwashing rotary spraying device, the thickness of the thickened portion is 1.2-3 times the thickness of the remaining portion of the rotating sleeve.

[0017] Preferably, in the above-mentioned pre-filter backwashing rotary spraying device, the pre-filter backwashing rotary spraying device also includes a filter element frame, the filter element frame is sleeved outside the rotating sleeve and is spaced apart from the rotating sleeve, and the filter element is installed on the filter element frame.

[0018] Preferably, in the above-mentioned pre-filter backwashing rotary spraying device, the pre-filter backwashing rotary spraying device also includes a bottle body and an outer bracket, the outer bracket is installed in the inner cavity of the bottle body, and the inner bracket, the rotating sleeve and the filter element are all installed in the inner cavity of the outer bracket; the inner cavity of the filter element forms a first water flow channel, and a second water flow channel is formed between the filter element and the inner wall of the bottle body.

[0019] Preferably, in the above-mentioned pre-filter backwashing rotary spraying device, the pre-filter backwashing rotary spraying device also includes a reset member installed in the inner cavity of the outer bracket, and the reset member can push the inner bracket to move when squeezed to switch the direction of water flow.

[0020] Preferably, in the above-mentioned pre-filter backwashing rotary spraying device, the outer bracket includes a first outer bracket and a second outer bracket, and the first outer bracket and the second outer bracket are detachably spliced.

[0021] Preferably, in the above-mentioned pre-filter backwashing rotary spraying device, the water flowing out from the through hole and the water flowing in from the through hole will respectively drive the rotating sleeve to rotate in opposite directions.

[0022] The beneficial effect of the pre-filter backwashing rotary spraying device of the present invention is that when the water flow entering the rotating sleeve flows out from the three through holes, the rotating sleeve will rotate under the action of the water flow, and the water flowing out from the three through holes will be sprayed toward the filter element in a rotating state to improve the cleaning effect of the filter element. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 is an overall diagram of a backwashing rotary spray washing device for a pre-filter according to an embodiment of the present invention;

[0024] Figure 2 1 is a front view of a filter assembly of a pre-filter backwashing rotary spraying device according to an embodiment of the present invention;

[0025] Figure 3 is a stereoscopic view of a filter assembly of a pre-filter backwashing rotary spray washing device according to an embodiment of the present invention;

[0026] Figure 4 It is an exploded view of the filter assembly of the pre-filter backwashing rotary spraying device according to an embodiment of the present invention;

[0027] Figure 5 is a three-dimensional diagram of a rotating sleeve of a pre-filter backwashing rotating spray washing device according to an embodiment of the present invention;

[0028] Figure 6 It is a top view of the rotating sleeve of the pre-filter backwashing rotary spraying device according to an embodiment of the present invention.

[0029] The names and numbers of the components in the figure are as follows:

[0030] Inner bracket 10, main body end 11, rotating sleeve 20, thickened portion 21, through hole 211, filter element frame 30, outer bracket 40, first outer bracket 41, second outer bracket 42, first water inlet 421, bottle body 50, raw water inlet 51, clean water outlet 52, sewage outlet 53, knob 54. DETAILED DESCRIPTION

[0031] The present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It is to be understood that the specific embodiments described herein are only used to explain the present invention, rather than to limit the present invention. It should also be noted that, for ease of description, only parts related to the present invention, rather than all structures, are shown in the accompanying drawings.

[0032] In the description of the present invention, unless otherwise clearly specified and limited, the terms "connected", "connected", and "fixed" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0033] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0034] In the description of this embodiment, the terms "upper", "lower", "right", etc., directions or positional relationships are based on the directions or positional relationships shown in the drawings, and are only for the convenience of description and simplification of operation, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are only used to distinguish in the description and have no special meaning.

[0035] like Figure 1 As shown, this embodiment discloses a pre-filter backwashing rotary spraying device. The pre-filter backwashing rotary spraying device of this embodiment has two states: a normal working state and a filter element cleaning state.

[0036] The pre-filter backwashing rotary spraying device of this embodiment includes a bottle body 50, on which a raw water inlet 51 and a clean water outlet 52 are provided. A filter element (not shown) is provided in the bottle body 50. Under normal working conditions, water entering the bottle body 50 from the raw water inlet 51 is filtered by the filter element and then flows out from the clean water outlet 52 for use by the user.

[0037] In order to facilitate sewage discharge, the bottle body 50 is also provided with a sewage outlet 53 and a knob 54 for controlling the opening or closing of the sewage outlet 53. When the filter element needs to be cleaned, water entering the bottle body 50 from the raw water inlet 51 cleans the filter element, and after cleaning, the sewage is discharged through the sewage outlet 53. Then, the sewage outlet 53 is closed again, and the pre-filter backwashing rotary spray washing device enters a normal working state.

[0038] The pre-filter backwashing rotary spraying device of this embodiment also includes an inner bracket 10 and a rotating sleeve 20. The rotating sleeve 20 is rotatably mounted on the inner bracket 10, and the inner cavity of the rotating sleeve 20 forms a water inlet cavity. The inner bracket 10 also has an inner cavity and has a hollow structure. Both ends of the inner bracket 10 extend out of the rotating sleeve 20. The peripheral wall of the rotating sleeve 20 is provided with three through holes 211, and the three through holes 211 are evenly distributed in the circumferential direction and are respectively arranged in the upper section, middle section and lower section of the rotating sleeve 20. The three through holes 211 are all inclined in the clockwise direction or the counterclockwise direction. The filter element is mounted on the inner bracket 10 and is sleeved on the outside of the rotating sleeve 20.

[0039] When cleaning the filter element, water entering the raw water inlet 51 first enters the inner cavity of the rotating sleeve 20. When the water flows out from the three through holes 211, the rotating sleeve 20 will rotate under the action of the water flow, and the water flowing out from the three through holes 211 will be sprayed toward the filter element in a rotating state to improve the cleaning effect of the filter element.

[0040] like Figure 5 and Figure 6 As shown, in this embodiment, the rotating sleeve 20 has a thickened portion 21, and the through holes 211 are arranged on the thickened portion 21. In this embodiment, the thickened portion 21 is arranged to increase the extension length of the through holes 211, so that the inclination angle of the through holes 211 plays a better role, so that when the water flows out from the three through holes 211, the rotating sleeve 20 can rotate better. Specifically, the rotating sleeve 20 has three thickened portions 21, and the three through holes 211 are respectively arranged on the three thickened portions 21.

[0041] In this embodiment, two opposite side walls of the through hole 211 are curved surfaces. In other alternative embodiments, two opposite side walls of the through hole 211 are inclined surfaces.

[0042] like Figure 6 As shown, in this embodiment, the intersection of the center line of the through hole 211 and the circle where the rotating sleeve 20 is located is defined as the reference point, and the angle a between the radius of the circle where the rotating sleeve 20 is located passing through the reference point and the center line is an obtuse angle, and the obtuse angle is 110°-170°. For example, the obtuse angle is 110°, 120°, 130°, 160° or 170°. At this time, the rotating sleeve 20 rotates more smoothly, and the effect of water flow cleaning the filter element is better.

[0043] In this embodiment, the thickness of the thickened portion 21 is 1.2-3 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. At this time, the rotating sleeve 20 rotates more smoothly, which is conducive to improving the effect of cleaning the filter element.

[0044] like Figure 2-Figure 4As shown, the pre-filter backwashing rotary spray washing device of this embodiment also includes a filter element frame 30, which is mounted outside the rotating sleeve 20 and spaced apart from the rotating sleeve 20, and a filter element is installed on the filter element frame 30. The filter element frame 30 has a hollow structure for water to pass through. The filter element frame 30 is spaced apart from the rotating sleeve 20 by a certain distance, so that the filter element is spaced apart from the rotating sleeve 20 by a certain distance, so that the water sprayed from the through hole 211 acts on the filter element with a certain force, and washes the impurities attached to the outer surface of the filter element from the inside to the outside, so as to ensure the effect of cleaning the filter element.

[0045] The pre-filter backwashing rotary spraying device of this embodiment further includes an outer bracket 40, which is mounted in the inner cavity of the bottle body 50, and the inner bracket 10, the rotating sleeve 20 and the filter element are all mounted in the inner cavity of the outer bracket 40. The inner cavity of the filter element forms a first water flow channel, and a second water flow channel is formed between the outer surface of the filter element and the inner wall of the bottle body 50. Under normal working conditions, water entering from the raw water inlet 51 enters the second water flow channel through the first water inlet 421, and then enters the first water flow channel after being filtered by the filter element, and finally discharged from the clean water outlet 52.

[0046] A return spring is installed in the outer bracket 40. The inner bracket 10 of the pre-filter backwashing rotary spraying device of this embodiment can move back and forth under the action of siphon and return spring to switch the direction of water flow, so that the water flows from the first water flow channel to the second water flow channel or from the second water flow channel to the first water flow channel. Specifically, in the state of cleaning the filter element, the sewage outlet 53 is opened, and under the action of siphon, the main body end 11 of the inner bracket 10 moves downward for a distance to switch the water flow channel, so that the water entering from the raw water inlet 51 passes through the first water inlet 421 and enters the inner cavity of the top filter element, and then enters the inner cavity of the rotating sleeve 20, that is, the inner cavity of the filter element. The sewage after cleaning the filter element enters the second water flow channel and is finally discharged from the sewage outlet 53.

[0047] In this embodiment, the outer bracket 40 includes a first outer bracket 41 and a second outer bracket 42, and the first outer bracket 41 and the second outer bracket 42 are detachably spliced ​​to facilitate the disassembly and assembly of the outer bracket 40. For example, the first outer bracket 41 and the second outer bracket 42 are snap-fitted. The first outer bracket 41 is located below the second outer bracket 42 and is longer than the second outer bracket 42. The first water inlet 421 is provided in the second outer bracket 42. The reset spring is installed at the bottom of the inner cavity of the first outer bracket 41 and abuts against the inner bracket 10.

[0048] In this embodiment, the water flowing out of the through hole 211 and the water flowing into the through hole 211 will respectively drive the rotating sleeve 20 to rotate in opposite directions.

[0049] In this embodiment, the inner support 10 , the rotating sleeve 20 , the filter element holder 30 , the filter element and the outer support 40 are assembled into a filter assembly, and the filter assembly can be installed in its entirety into the bottle body 50 or removed from the bottle body 50 .

[0050] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. For those skilled in the art, various obvious changes, readjustments and substitutions can be made without departing from the protection scope of the present invention. It is not necessary and impossible to list all the embodiments here. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the claims of the present invention.

Claims

1. A pre-filter backwashing rotary spraying device, characterized in that: include: Internal support (10); A rotating sleeve (20), the rotating sleeve (20) being rotatably mounted on the inner bracket (10), and the inner cavity of the rotating sleeve (20) forming a water inlet cavity; three through holes (211) are formed on the peripheral wall of the rotating sleeve (20), the three through holes (211) are evenly 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 in the clockwise direction or the counterclockwise direction; A filter element, the filter element being mounted on the inner bracket (10) and sleeved outside the rotating sleeve (20); The rotating sleeve (20) has a thickened portion (21), and the through hole (211) is arranged in the thickened portion (21); The side wall of the through hole (211) is a curved surface or an inclined surface.

2. The pre-filter backwashing rotary spraying device according to claim 1 is characterized in that: The intersection of the center line of the through hole (211) and the circle where the rotating sleeve (20) is located is defined as a reference point, and the angle between the radius of the circle where the rotating sleeve (20) is located passing through the reference point and the center line is an obtuse angle, and the obtuse angle is 110°-170°.

3. The pre-filter backwashing rotary spraying device according to claim 1 is characterized in that: The thickness of the thickened portion (21) is 1.2-3 times the thickness of the remaining portion of the rotating sleeve (20).

4. The pre-filter backwashing rotary spraying device according to claim 1 is characterized in that: The pre-filter backwashing rotary spray washing device further comprises a filter element frame (30), wherein the filter element frame (30) is sleeved outside the rotating sleeve (20) and is spaced apart from the rotating sleeve (20), and the filter element is mounted on the filter element frame (30).

5. The pre-filter backwashing rotary spraying device according to claim 1 is characterized in that: The pre-filter backwashing rotary spraying device further comprises a bottle body (50) and an outer bracket (40); the outer bracket (40) is mounted in the inner cavity of the bottle body (50), and the inner bracket (10), the rotating sleeve (20) and the filter element are all mounted in the inner cavity of the outer bracket (40); the inner cavity of the filter element forms a first water flow channel, and a second water flow channel is formed between the filter element and the inner wall of the bottle body (50).

6. The pre-filter backwashing rotary spraying device according to claim 5 is characterized in that: The pre-filter backwashing rotary spraying device also includes a reset member installed in the inner cavity of the outer bracket (40), and the reset member can push the inner bracket (10) to move when squeezed to switch the direction of water flow.

7. The pre-filter backwashing rotary spraying device according to claim 5, characterized in that: The outer bracket (40) comprises a first outer bracket (41) and a second outer bracket (42), and the first outer bracket (41) and the second outer bracket (42) are detachably spliced.

8. The pre-filter backwashing rotary spraying device according to any one of claims 1 to 7, characterized in that: The water flowing out of the through hole (211) and the water flowing into the through hole (211) will respectively drive the rotating sleeve (20) to rotate in opposite directions.

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