Automatic backwashing household water purifier

Abstract

The utility model relates to the technical field of water purifiers, and discloses an automatic backwashing household water purifier, which comprises a water purifier body, a filter cup is screwed at the bottom of the water purifier body, a filter element connected with the water purifier body is arranged in the filter cup, a mode switching assembly connected with the filter element is rotatably arranged in the filter cup, and the mode switching assembly is connected with the water purifier body. A mode switching driving piece for driving the mode switching assembly to switch modes is arranged at the bottom of the filter cup, and a dirt scraping piece abutting against the inner wall of the filter cup is arranged on the mode switching assembly. By arranging the mode switching assembly and the mode switching driving piece, when the filter element is seriously blocked, the pressure sensor can detect that the water pressure in the filter cup reaches a threshold value, and the telescopic end of the traction electromagnet can be triggered to drive the mode switching assembly to move downwards, so that the water purifier is changed into a backwashing state from a water purification state; impurities and dirt on the filter element are cleaned, and the service life of the filter element is prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of water purifiers, in particular to an automatic backwashing household water purifier. Background Art

[0002] Water purifiers are used to filter out floating objects, heavy metals, bacteria, viruses, residual chlorine, silt, rust, microorganisms and other impurities in the water to protect the health of users and improve the taste of water.

[0003] However, after a period of use, the filter element of the water purifier will be gradually clogged by impurities, resulting in a significant decrease in the filtration and adsorption effects. As more and more impurities are intercepted by the filter element, the filter element often becomes a new "pollution" source and must be replaced. In order to solve the above problem, we propose an automatic backwash household water purifier. Utility Model Content

[0004] The utility model aims to provide an automatic backwashing household water purifier to solve the problem that the filtering and adsorption effects of the filter element are significantly reduced after the filter element has been used for a period of time.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: an automatic backwash household water purifier, comprising a water purifier body, a filter cup screwed on the bottom of the water purifier body, a filter element connected to the water purifier body provided in the filter cup, a mode switching assembly connected to the filter element rotatably provided in the filter cup, a mode switching drive member for driving the mode switching assembly to switch modes provided at the bottom of the filter cup, and a scraper member abutting against the inner wall of the filter cup provided on the mode switching assembly.

[0006] According to the above technical solution, the mode switching drive member includes a traction electromagnet, which is fixed to the bottom of the filter cup. The telescopic end of the traction electromagnet is connected to the mode switching component, and a pressure sensor is fixed to the inner bottom wall of the filter cup.

[0007] According to the above technical solution, the mode switching assembly includes a rotating sleeve rotating on the outer wall of the filter element, the rotating sleeve is provided with a water hole, the outer wall of the rotating sleeve is provided with an upper seal located above the water hole, and the inner wall of the filter cup is provided with a lower rotating seal matched with the upper seal.

[0008] According to the above technical solution, a limiting groove is provided on the outer wall of the filter element, and a limiting boss is formed on the inner wall of the rotating sleeve, and the limiting boss slides vertically in the limiting groove.

[0009] According to the above technical solution, the upper seal includes a sealing platform fixedly sleeved on the outer wall of the rotating sleeve, a fixed sealing ring is fixedly connected to the bottom of the sealing platform, and the lower rotating seal includes a ring platform fixedly connected to the inner wall of the filter cup, and a rotating sealing ring is rotatably provided on the top of the ring platform.

[0010] According to the above technical solution, the scraper comprises a scraper plate, the scraper plate is fixedly connected to the outer wall of the rotating sleeve, and the end of the scraper plate is fixedly connected with bristles that abut against the inner wall of the filter cup.

[0011] According to the above technical solution, the water holes are evenly arranged along the circumferential outer wall of the rotating sleeve, the scraping plates and the water holes are staggered, and the scraping plates are all inclined in the same direction.

[0012] According to the above technical solution, the water purifier body includes a valve body, a clean water outlet circular cavity is formed at the bottom of the valve body, the clean water outlet circular cavity is connected to the liquid outlet end of the valve body, the top of the filter element is inserted into the clean water outlet circular cavity, an annular slot is formed on the outside of the clean water outlet circular cavity, a sealing ring is fixed to the bottom of the annular slot, and the top of the rotating kit is inserted into the annular slot and abuts against the sealing ring in the slot.

[0013] According to the above technical solution, the mode switching assembly includes a rotating sleeve rotating on the outer wall of the filter element, and the inner wall of the rotating sleeve is provided with a synthetic scraper abutting against the outer wall of the filter element.

[0014] Compared with the prior art, the beneficial effects of the utility model are:

[0015] The utility model is provided with a mode switching component and a mode switching drive. When the filter element is seriously clogged, the pressure sensor will detect that the water pressure in the filter cup has reached a threshold value, and will trigger the telescopic end of the traction electromagnet to drive the mode switching component to move downward, so that the water purifier changes from a water purification state to a backwashing state, so as to clean out impurities and dirt on the filter element and extend the service life of the filter element.

[0016] The utility model provides a scraper member that abuts against the inner wall of the filter cup on the switching mode switching component. During backwashing, water flows toward the filter element through the water through the water through the hole. The water flows sprayed through the water through the water through the hole will impact the surface of the scraper plate that is inclined to provide thrust to the scraper plate, so that the scraper plate drives the rotating kit to rotate. The rotation of the rotating kit can drive the scraper plate and the bristles to rotate, so that the bristles clean the inner wall of the filter cup. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall structure of the backwash water purifier of the utility model;

[0018] Figure 2 It is a cross-sectional view of the backwash water purifier of the utility model;

[0019] Figure 3 This utility model Figure 2 A magnified schematic diagram of the middle part;

[0020] Figure 4 It is a schematic diagram of the rotating kit and the scraping member of the utility model;

[0021] Figure 5 It is a bottom schematic diagram of the water purifier body of the utility model;

[0022] Figure 6 It is a partial stereoscopic diagram of the water purifier body of the utility model.

[0023] In the figure:

[0024] 1. Water purifier body; 2. Filter cup; 3. Filter element; 41. Rotating kit; 42. Water hole; 43. Upper seal; 431. Sealing platform; 432. Fixed sealing ring; 44. Lower rotating seal; 441. Ring platform; 442. Rotating sealing ring; 5. Mode switching drive; 51. Traction electromagnet; 52. Pressure sensor; 6. Scraping part; 61. Scraping plate; 62. Bristles; 63. Synthetic scraper; 7. Limiting groove; 8. Limiting boss; 11. Valve body; 12. Clean water outlet circular cavity; 13. Annular slot; 14. Sealing ring in the groove; 15. Waste outlet. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0026] See also Figure 1-6 The utility model provides a technical solution for an automatic backwashing household water purifier: it includes a water purifier body 1, a filter cup 2 is screwed at the bottom of the water purifier body 1, a filter element 3 connected to the water purifier body 1 is arranged in the filter cup 2, a center tube with holes is fixedly connected to the bottom of the water purifier body 1, the filter element 3 is sleeved on the outer wall of the center tube, and the center tube is used for fixing and supporting the filter element 3.

[0027] A mode switching assembly connected to the filter element 3 is rotatably provided in the filter cup 2, and a mode switching driving member 5 for driving the mode switching assembly to switch modes is provided at the bottom of the filter cup 2, so that when the filter element 3 in the water purifier needs to be cleaned, the mode switching driving member 5 can drive the mode switching assembly to move vertically, so that the water purifier changes from a water purification state to a backwashing state, so as to clean impurities and dirt on the filter element 3, extend the service life of the filter element 3, and improve the water filtering effect of the water purifier.

[0028] A scraper 6 is provided on the switching mode switching component, which is against the inner wall of the filter cup 2. After the water purifier changes from the water purification state to the backwashing state, the scraper 6 can be rotated by switching the mode switching component to clean the inner wall of the filter cup 2 to ensure the continuous filtering effect and long-term stable operation of the filter cup, improve the water filtering effect of the water purifier, and ensure the safety and hygiene of the water quality.

[0029] Specifically, the mode switching drive 5 includes a traction electromagnet 51, which is fixedly connected to the bottom of the filter cup 2. The telescopic end of the traction electromagnet 51 passes through the bottom wall of the filter cup 2 and is connected to the mode switching component, which is used to drive the mode switching component to move vertically. A pressure sensor 52 is fixedly connected to the inner bottom wall of the filter cup 2, which is used to monitor the water pressure in the filter cup 2 in real time. When the filter element 3 is seriously clogged, that is, the pressure sensor 52 detects that the water pressure in the filter cup 2 reaches the threshold value, the pressure sensor 52 will transmit an electrical signal, which will trigger the telescopic action of the traction electromagnet 51, so that the telescopic end of the traction electromagnet 51 drives the mode switching component to move downward, so that the water purifier changes from the water purification state to the backwashing state, so as to clean the impurities and dirt on the filter element and extend the service life of the filter element 3.

[0030] Specifically, the mode switching assembly includes a rotating sleeve 41 rotating on the outer wall of the filter element 3, and the mode switching driving member 5 is connected to the bottom of the rotating sleeve 41.

[0031] A water hole 42 is provided on the rotating kit 41. The rotating kit 41 is a barrel-shaped part. The water holes 42 are evenly arranged on the outer wall of the barrel-shaped part. The outer wall of the rotating kit 41 is provided with an upper seal 43 located on the upper part of the water hole 42. The inner wall of the filter cup 2 is provided with a lower rotating seal 44 adapted to the upper seal 43. A first channel is formed between the upper seal 43 and the filter cup 2, and a second channel is formed between the lower rotating seal 44 and the upper seal 43. The portion of the rotating kit 41 located above the upper seal 43 will wrap the outer wall of the filter element 3, so that the water entering the filter cup 2 can only flow through the first channel and the second channel. Under normal conditions, that is, when the upper seal 43 and the lower rotating seal 44 are in a separated state, the water entering the filter cup 2 needs to pass through the first channel and the second channel to enter the inside of the filter element 3 to be filtered by the filter element 3, and then flow out through the water outlet end of the water purifier body 1.

[0032] When the filter element 3 is seriously clogged, the mode switching drive 5 can drive the rotating kit 41 to move downward along the outer wall of the filter element 3, so that the part of the rotating kit 41 located above the upper seal 43 exposes part of the filter element 3, and the upper seal 43 and the lower rotating seal 44 are fitted together to block the water passing through the first channel and the second channel, so that the water entering the filter cup 2 can only flow into the filter element 3 through the exposed part of the filter element 3 located above the upper seal 43, and the water flow will flow out of the filter element 3 through the part of the filter element 3 located below the upper seal 43, so as to realize backwashing of the filter element 3, and then flow out of the water purifier through the waste outlet 15 on the side wall of the filter cup 2.

[0033] Specifically, a limiting groove 7 is provided on the outer wall of the filter element 3 , and a limiting boss 8 is integrally formed on the inner wall of the rotating sleeve 41 . The limiting boss 8 slides vertically in the limiting groove 7 to limit the moving range of the rotating sleeve 41 .

[0034] Specifically, the upper seal 43 includes a sealing platform 431 fixedly sleeved on the outer wall of the rotating kit 41, the sealing platform 431 and the rotating kit 41 are an integrally formed structure, a fixed sealing ring 432 is fixedly connected to the bottom of the sealing platform 431, and an annular protrusion is provided on the surface of the fixed sealing ring 432, and the lower rotating seal 44 includes an annular platform 441 fixedly connected to the inner wall of the filter cup 2, a rotating sealing ring 442 is rotatably provided on the top of the annular platform 441, a mounting ring disk is provided at the bottom of the rotating sealing ring 442, and an annular slide rail is integrally formed at the bottom of the mounting ring disk, an annular groove is provided on the surface of the annular platform 441 close to the rotating sealing ring 442, the annular slide rail rotates in the annular groove, and the annular slide rail and the annular groove are sealed, an annular protrusion is also provided on the upper surface of the rotating sealing ring 442, and the annular protrusions on the rotating sealing ring 442 and the fixed sealing ring 432 are staggered to play a sealing role.

[0035] Specifically, the scraper 6 includes a scraper plate 61, which is fixedly connected to the outer wall of the rotating kit 41, and is L-shaped. The scraper plate 61 is divided into a connecting plate close to the rotating kit 41 and a brush head close to the filter cup 2. The end of the scraper plate 61 is fixedly connected with bristles 62 that abut against the inner wall of the filter cup 2. The bristles 62 are evenly distributed on the outer surface of the brush head. By rotating the rotating kit 41, the scraper plate 61 and the bristles 62 can be driven to rotate, so that the bristles 62 clean the inner wall of the filter cup 2.

[0036] Specifically, the water holes 42 are evenly arranged along the circumferential outer wall of the rotating sleeve 41 and arranged vertically. The scraper plates 61 and the water holes 42 are staggered, and the scraper plates 61 are all inclined in the same direction, so that the scraper plates 61 are facing the water outlet direction of the water holes 42. During backwashing, water flows out of the filter element 3 through the water holes 42. The water flow ejected through the water holes 42 will impact the surface of the inclined scraper plates 61 to provide thrust to the scraper plates 61, so that the scraper plates 61 drive the rotating sleeve 41 to rotate.

[0037] Specifically, the water purifier body 1 includes a valve body 11, a clean water outlet circular cavity 12 is formed at the bottom of the valve body 11, and the clean water outlet circular cavity 12 is connected to the liquid outlet end of the valve body 11. The filtered water can flow out through the clean water outlet circular cavity 12 through the liquid outlet end of the valve body 11. The top of the filter element 3 is inserted into the clean water outlet circular cavity 12. The inner wall of the clean water outlet circular cavity 12 is provided with a sealing ring, so that water can enter the clean water outlet circular cavity 12 only after being filtered by the filter element 3. The outer side of the clean water outlet circular cavity 12 is formed with an annular slot 13 The bottom of the annular slot 13 is fixedly connected with an inner-slot sealing ring 14, and the top of the rotating sleeve 41 is inserted into the annular slot 13 and abuts against the inner-slot sealing ring 14, so that the rotating sleeve 41 and the inner-slot sealing ring 14 are sealed. After water enters the filter cup 2 through the water inlet end of the water purifier body 1 (when the upper seal 43 and the lower rotating seal 44 are in a separated state), water will not flow into the filter element 3 through the portion of the filter element 3 located above the upper seal 43, that is, water can only flow into the filter element 3 through the first channel and the second channel.

[0038] Specifically, the mode switching component includes a rotating kit 41 that rotates on the outer wall of the filter element 3. The inner wall of the rotating kit 41 is provided with a synthetic scraper bar 63 that abuts against the outer wall of the filter element 3. When the rotating kit 41 rotates, the synthetic scraper bar 63 can be driven to rotate to scrape and clean the surface of the filter element 3. The synthetic scraper bar 63 is made of synthetic material, which makes the scraper bar wear-resistant, aging-resistant and corrosion-resistant.

[0039] Working principle:

[0040] Under normal conditions, that is, when the upper seal 43 and the lower rotating seal 44 are in a separated state, water entering the filter cup 2 needs to pass through the first channel and the second channel into the filter element 3 to be filtered by the filter element 3 and then flow out through the water outlet of the water purifier body 1.

[0041] When the filter element 3 is seriously clogged, the traction electromagnet 51 will drive the rotating kit 41 to move downward along the outer wall of the filter element 3, so that the part of the rotating kit 41 located above the upper seal 43 will partially expose the filter element 3, and the upper seal 43 and the lower rotating seal 44 will fit together to block the water passing through the first channel and the second channel, so that the water entering the filter cup 2 can only flow into the filter element 3 through the exposed part of the filter element 3 located above the upper seal 43, and the water flow will flow out through the part of the filter element 3 located below the upper seal 43, and flow out of the filter element 3 through the water hole 42, so as to realize backwashing of the filter element 3, and then flow out of the water purifier through the waste outlet 15 on the side wall of the filter cup 2.

[0042] When water flows out of the filter element 3 through the water hole 42, the water jetted out through the water hole 42 will impact the surface of the inclined scraper plate 61 to provide thrust to the scraper plate 61, so that the scraper plate 61 drives the rotating kit 41 to rotate. The rotation of the rotating kit 41 can drive the scraper plate 61 and the bristles 62 to rotate, so that the bristles 62 clean the inner wall of the filter cup 2.

[0043] In the description of the present invention, it should be understood that the terms "coaxial", "bottom", "one end", "top", "middle", "the other end", "upper", "one side", "top", "inside", "front", "center", "both ends" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0044] In addition, the terms "first", "second", "third" and "fourth" are used for descriptive purposes only and are not to be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, the features defined as "first", "second", "third" and "fourth" may explicitly or implicitly include at least one of such features.

[0045] In the present utility model, unless otherwise clearly stipulated and limited, the terms such as "installation", "setting", "connection", "fixation" and "screw-on" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integrated 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. Unless otherwise clearly defined, ordinary technicians in this field can understand the specific meanings of the above terms in the utility model according to the specific circumstances.

[0046] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An automatic backwashing household water purifier, characterized by: The invention comprises a water purifier body (1), a filter cup (2) being screwed to the bottom of the water purifier body (1), a filter core (3) connected to the water purifier body (1) being arranged in the filter cup (2), a mode switching component connected to the filter core (3) being rotatably arranged in the filter cup (2), a mode switching driving member (5) for driving the mode switching component to switch modes being arranged at the bottom of the filter cup (2), and a scraping member (6) being arranged on the mode switching component and being against the inner wall of the filter cup (2).

2. An automatic backwashing household water purifier according to claim 1, characterized in that: The mode switching drive member (5) comprises a traction electromagnet (51), the traction electromagnet (51) is fixedly connected to the bottom of the filter cup (2), the telescopic end of the traction electromagnet (51) is connected to the mode switching component, and the inner bottom wall of the filter cup (2) is fixedly connected with a pressure sensor (52).

3. An automatic backwashing household water purifier according to claim 1, characterized in that: The mode switching assembly comprises a rotating sleeve (41) rotating on the outer wall of the filter element (3), the rotating sleeve (41) being provided with a water passage hole (42), the outer wall of the rotating sleeve (41) being provided with an upper sealing member (43) located above the water passage hole (42), and the inner wall of the filter cup (2) being provided with a lower rotating sealing member (44) matched with the upper sealing member (43).

4. An automatic backwashing household water purifier according to claim 3, characterized in that: The outer wall of the filter element (3) is provided with a limiting groove (7), and the inner wall of the rotating sleeve (41) is formed with a limiting boss (8), and the limiting boss (8) slides vertically in the limiting groove (7).

5. The automatic backwashing household water purifier according to claim 3, characterized in that: The upper sealing member (43) comprises a sealing platform (431) fixedly sleeved on the outer wall of the rotating sleeve (41), a fixed sealing ring (432) being fixedly connected to the bottom of the sealing platform (431), and the lower rotating sealing member (44) comprises an annular platform (441) fixedly connected to the inner wall of the filter cup (2), a rotating sealing ring (442) being rotatably provided on the top of the annular platform (441).

6. An automatic backwashing household water purifier according to claim 3, characterized in that: The scraping member (6) comprises a scraping plate (61) which is fixedly connected to the outer wall of the rotating sleeve (41); the end of the scraping plate (61) is fixedly connected with bristles (62) which abut against the inner wall of the filter cup (2).

7. An automatic backwashing household water purifier according to claim 6, characterized in that: The water holes (42) are evenly arranged along the circumferential outer wall of the rotating sleeve (41), the dirt scraping plates (61) and the water holes (42) are staggered, and the dirt scraping plates (61) are all inclined in the same direction.

8. An automatic backwashing household water purifier according to claim 6, characterized in that: The water purifier body (1) comprises a valve body (11), a clean water outlet circular cavity (12) is formed at the bottom of the valve body (11), the clean water outlet circular cavity (12) is connected to the liquid outlet end of the valve body (11), the top of the filter element (3) is inserted into the clean water outlet circular cavity (12), an annular slot (13) is formed on the outside of the clean water outlet circular cavity (12), a groove bottom of the annular slot (13) is fixedly connected to a groove inner sealing ring (14), and the top of the rotating sleeve (41) is inserted into the annular slot (13) and abuts against the groove inner sealing ring (14).

9. An automatic backwashing household water purifier according to claim 1, characterized in that: The mode switching assembly comprises a rotating sleeve (41) rotating on the outer wall of the filter element (3), and the inner wall of the rotating sleeve (41) is provided with a synthetic scraper (63) abutting against the outer wall of the filter element (3).

Images