CN216778147U

CN216778147U - Front filter for gas water heater

Info

Publication number: CN216778147U
Application number: CN202123153454.7U
Authority: CN
Inventors: 徐金金; 谭洵
Original assignee: Ningbo Fotile Kitchen Ware Co Ltd
Current assignee: Ningbo Fotile Kitchen Ware Co Ltd
Priority date: 2021-12-14
Filing date: 2021-12-14
Publication date: 2022-06-21
Anticipated expiration: 2031-12-14

Abstract

The utility model relates to a pre-filter for a gas water heater, which comprises a shell and a filter element arranged in the shell, and is characterized in that: the filter element cleaning device also comprises a driving piece which is used for driving the filter element to rotate relative to the shell, correspondingly, a scraping part which is used for scraping impurities attached to the surface of the filter element during filtering is arranged on the shell, and the shell is switched between a water purifying state and a back washing state when rotating to a first position or a second position, compared with the prior art, the filter element cleaning device has the advantages that: through be provided with the portion of scraping off that can strike off the adnexed impurity in surface when filtering the filter core on the casing, can realize under driving piece drive filter core pivoted state together that water purification state and back flush state switch, can also conveniently clean filter core structure.

Description

Front filter for gas water heater

Technical Field

The utility model relates to the technical field of gas water heaters, in particular to a pre-filter for a gas water heater.

Background

At present, conventional gas heater in the market can set up little filter screen at the end of intaking and filter aquatic impurity usually, protects the inside rivers sensor of gas heater simultaneously, prevents that the rivers sensor from dying because of the too much card of impurity. However, after the water heater is used for a long time, the commonly used small filter screen is easy to block due to the fact that the filtering area is reduced due to blocking of impurities, and therefore the flow of tap water is greatly reduced, and normal use of the water heater is affected. For this reason, as chinese utility model patent application No. CN202011109841.8 (application publication No. CN112275018A) discloses a prefilter and a gas water heater using the same, wherein the prefilter includes a water housing structure, a filter element structure, a water flow monitoring structure and a temperature monitoring structure, the filter element structure is detachably installed inside the water housing structure for filtering tap water in a large area, although the filter element structure is detachably installed inside the water housing structure, the filter element structure with a large filtering area can be used to increase the filtering area, increase the flow rate of tap water and prevent blockage, but the filter element structure still needs to be replaced by dismounting or mounting, which still has the defect of inconvenient use and needs to be further improved.

SUMMERY OF THE UTILITY MODEL

The first technical problem to be solved by the present invention is to provide a prefilter for a gas water heater, which can conveniently clean a filter element structure, in view of the above prior art.

The second technical problem to be solved by the present invention is to provide a pre-filter for a gas water heater, which can have a winter anti-freezing function, in view of the above-mentioned prior art.

The technical scheme adopted by the utility model for solving the first technical problem is as follows: the pre-filter for the gas water heater comprises a shell and a filter element arranged in the shell, wherein the shell is provided with an accommodating cavity, and the shell is provided with a water inlet communicated with the accommodating cavity and a water outlet for filtered water filtered by the filter element to flow out; correspondingly the filter core have with the water inlet of casing and the filter chamber of delivery port intercommunication, its characterized in that:

the driving piece is used for driving the filter element to rotate relative to the shell together, correspondingly, the shell is provided with a scraping part used for scraping impurities attached to the surface of the filter element during filtering, and the filter element is switched between a water purification state and a backwashing state when rotating to a first position or a second position.

In order to realize the switching between the water purifying state and the back flushing state of the pre-filter, preferably, the filter element includes a filter chamber, the peripheral wall of the filter chamber has a water passing opening and a blocking portion spaced from the water passing opening adjacent to the upper end thereof, at least one circle of water passing portions spaced along the circumferential direction are disposed on the peripheral wall of the filter chamber below the water passing opening and the blocking portion, the water passing portion can be communicated with the water inlet and the water outlet of the housing, and a first water passing channel communicated with the water passing portion is disposed between the peripheral wall of the filter chamber and the inner wall of the housing, wherein:

when the filter element and the driving piece are in the first position together, a water passing opening in a filtering cavity of the filter element is communicated with a water outlet of the shell, a blocking part of the filtering cavity blocks the water inlet of the shell, external tap water enters the filtering cavity of the valve core from the water inlet through the first water passing channel and the water passing part, and filtered water filtered by the filter element flows to the water outlet of the shell through the water passing opening, so that water purifying operation is realized;

when the filter element and the driving element are located at the second position, a water passing opening in a filtering cavity of the filter element is communicated with a water inlet of the shell, a blocking part of the filtering cavity blocks a water outlet of the shell, external tap water flows through the first water passing channel and the water passing part from the water inlet into a filtering cavity of the valve element, and backwash water for scraping impurities attached to the surface of the filter element flows out of a water outlet of the shell to realize backwash operation.

Furthermore, a gap is formed between the lower end of the filtering chamber and the shell, a connecting piece is arranged in the gap, the driving piece is connected with the filter element together, and at least one communicating part communicated with the water outlet is circumferentially arranged on the connecting piece at intervals.

In order to realize the connection of the connecting piece, preferably, the driving piece comprises a driving cylinder with an open upper end and a closed lower end, a partition plate is arranged in the driving cylinder, the partition plate divides the driving cylinder into a first cavity for accommodating the shell and the lower section of the filter element, a first connecting port communicated with the water outlet of the shell is arranged in the center of the partition plate, and correspondingly, a second connecting port matched with the first connecting port to be connected with the connecting piece together is arranged at the bottom of the filter element.

The second object of the present invention is achieved by a filter cartridge, wherein the filter cartridge includes a first chamber, a second chamber, a partition plate, a valve core, a first water passage, a second water passage, a first connecting port, a second connecting port, a third connecting port, a fourth connecting port, a fifth connecting port, a sixth connecting port, a fifth connecting port, a sixth connecting port, a fifth connecting port, a sixth connecting port, a fifth connecting port, a sixth connecting port, a fifth connecting port, a sixth connecting port, a connecting port, a fourth connecting port, a fifth connecting a connecting port, a connecting a fourth connecting port, a connecting port, a connecting port, a connecting a fifth connecting port, a fifth connecting port, a fifth connecting port, a connecting a fifth connecting port, a fifth connecting a fifth connecting port, a fifth connecting a fifth.

In order to conveniently rotate the valve core, preferably, the anti-freezing mechanism further comprises a valve rod, one end of the valve rod penetrates through the valve body and is connected with the valve core, and the other end of the valve rod is located outside the valve body and serves as a driving end.

In order to be able to accommodate the scraping of the filter element over a wide range, the scraping portion is preferably a vertical scraping strip disposed at intervals on the inner wall of the housing.

Compared with the prior art, the utility model has the advantages that: through be provided with the portion of scraping off that can strike off the adnexed impurity in surface when filtering the filter core on the casing, can realize under driving piece drive filter core pivoted state together that water purification state and back flush state switch, can also conveniently clean filter core structure.

Drawings

FIG. 1 is a schematic structural diagram of a pre-filter according to an embodiment of the present invention;

FIG. 2 is a cross-sectional view of a pre-filter in a water purification state (shown with a water flow path in phantom) in an embodiment of the present invention;

FIG. 3 is a cross-sectional view of a pre-filter in a backwash state (water flow path shown in phantom) in an embodiment of the present invention;

FIG. 4 is a cross-sectional view of a pre-filter in an antifreeze state (water flow path shown in phantom) according to an embodiment of the present invention;

FIG. 5 is a schematic view of a filter cartridge according to an embodiment of the present invention;

fig. 6 is a schematic structural diagram of a connector according to an embodiment of the present invention.

Detailed Description

The utility model is described in further detail below with reference to the accompanying examples.

As shown in FIGS. 1 to 6, the preferred embodiment of the present invention is shown. The pre-filter for the gas water heater comprises a shell 1 and a filter element 2 arranged in the shell 1, wherein the shell 1 is provided with an accommodating cavity 11, and the shell 1 is provided with a water inlet 12 communicated with the accommodating cavity 11 and a water outlet 13 for flowing out of filtered water filtered by the filter element 2; correspondingly, the filter element 2 is provided with a filter cavity 21 communicated with the water inlet 12 and the water outlet 13 of the shell 1, and further comprises a driving element 3 which is used for driving the filter element 2 to rotate relative to the shell 1, correspondingly, a scraping part 15 which is used for scraping impurities attached to the surface of the filter element 2 during filtering is arranged on the shell 1, and under the state of rotating to a first position or a second position, the switching between a water purifying state and a back flushing state is realized, through the scraping part 15 which is arranged on the shell 1 and can scrape the impurities attached to the surface of the filter element 2 during filtering, the filter element 2 is driven by the driving element 3 to rotate together, and meanwhile, the switching between the water purifying state and the back flushing state is realized, and the structure of the filter element 2 can be conveniently cleaned.

Specifically, in order to realize the switching between the water purifying state and the back flushing state of the pre-filter, the filter element 2 of the embodiment includes a filter chamber, the peripheral wall of the filter chamber has a water passing opening 22 and a blocking portion 23 spaced from the water passing opening 22 by 4 adjacent to the upper end thereof, at least one circle of water passing portion 24 spaced from the water passing opening 22 by 4 along the circumferential direction is disposed below the water passing opening 22 and the blocking portion 23, the water passing portion 24 can be communicated with the water inlet 12 and the water outlet 13 of the housing 1, and a first water passing channel 25 communicated with the water passing portion 24 is disposed between the peripheral wall of the filter chamber and the inner wall of the housing 1, wherein:

when the filter element 2 and the driving element 3 are in the first position, the water outlet 22 in the filtering chamber of the filter element 2 is communicated with the water outlet 13 of the shell 1, the blocking part 23 of the filtering chamber blocks the water inlet 12 of the shell 1, external tap water enters the filtering cavity 21 of the valve core 6 from the water inlet 12 through the first water channel 25 and the water passing part 24, and filtered water filtered by the filter element 2 flows to the water outlet 13 of the shell 1 through the water outlet 22, so that water purification operation is realized;

in the state that the filter element 2 and the driving element 3 are located at the second position together, the water passing opening 22 in the filtering chamber of the filter element 2 is communicated with the water inlet 12 of the shell 1, the blocking part 23 of the filtering chamber blocks the water outlet 13 of the shell 1, external tap water flows through the first water passing channel 25 and the water passing part 24 from the water inlet 12 to enter the filtering cavity 21 of the valve core 6, and backwash water with impurities attached to the surface of the filter element 2 scraped off flows out of the drainage opening 14 of the shell 1, so that backwash operation is realized.

And a space 4 is arranged between the lower end of the filtering chamber and the shell 1, a connecting piece 5 for connecting the driving piece 3 and the filter element 2 is arranged in the space 4, and at least one communicating part 51 communicated with the water outlet 14 is arranged on the connecting piece 5 along the circumferential direction at the space 4. The connecting member 5 of the present embodiment is hexagonal, and in order to realize the connection of the connecting member 5, the driving member 3 includes a driving cylinder with an open upper end and a closed lower end, and a partition plate 31 is disposed in the driving cylinder, the partition plate 31 divides the driving cylinder into a first cavity 32 for accommodating the lower section of the housing 1 and the filter element 2, a first connecting port 311 communicated with the water outlet 14 of the housing 1 is disposed in the center of the partition plate 31, and correspondingly, a second connecting port 26 matched with the first connecting port 311 to commonly connect the connecting member 5 is disposed at the bottom of the filter element 2. In addition to scraping off impurities on the surface of the filter element 2 and achieving the anti-freezing operation, the partition plate 31 of this embodiment divides the driving cylinder into a second chamber 33 located below the first chamber 32 and used for accommodating the anti-freezing mechanism, the second chamber 33 has a discharge port 331 communicating with the second connection port 26, the anti-freezing mechanism includes a valve core 6 rotatably disposed in the second chamber 33, and the valve core 6 has a second water passing channel 61 communicating with the second connection port 26 and the discharge port 331. Specifically, the method comprises the following steps:

when the filter element 2 and the driving element 3 are in the first position, the water passing port 22 in the filtering chamber of the filter element 2 is communicated with the water outlet 13 of the shell 1, the blocking part 23 of the filtering chamber blocks the water inlet 12 of the shell 1, accumulated water in the shell 1 flows through the first water passing channel 25, the water passing part 24, the water outlet 14 of the shell 1 and the first connecting port 311 of the partition plate 31 from the water outlet 13 into the second chamber 33, and the valve rod 62 is used for rotating the valve core 6 to the state that the second water passing channel 61 of the valve core is communicated with the first connecting port 311 and the water outlet 331, so that the anti-freezing operation is realized.

Finally, in order to rotate the valve core 6 conveniently, the anti-freezing mechanism further comprises a valve rod 62, one end of the valve rod 62 penetrates through the valve body and is connected with the valve core 6, the other end of the valve rod 62 is located outside the valve body and serves as a driving end, and in order to be capable of adapting to scraping the filter element 2 on a large scale, the scraping part 15 is a vertical scraping strip arranged on the inner wall of the shell 1 at intervals 4.

Claims

1. A pre-filter for a gas water heater comprises a shell (1) and a filter element (2) arranged in the shell (1), wherein the shell (1) is provided with an accommodating cavity (11), and the shell (1) is provided with a water inlet (12) communicated with the accommodating cavity (11) and a water outlet (13) for the outflow of filtered water filtered by the filter element (2); correspondingly the filter element (2) has a filter chamber (21) which communicates with the water inlet (12) and the water outlet (13) of the housing (1), characterized in that:

the filter element comprises a shell (1), a driving piece (3) and a back washing piece, wherein the shell (1) is provided with a scraping part (15) used for scraping impurities attached to the surface of the filter element (2) during filtering, and the driving piece (3) is used for driving the filter element (2) to rotate together relative to the shell (1), correspondingly, the shell (1) is provided with a scraping part (15) used for scraping the impurities attached to the surface of the filter element (2) during filtering, and the filter element is switched between a water purification state and a back washing state when rotating to a first position or a second position.

2. The pre-filter for a gas water heater of claim 1, wherein: the filter element (2) comprises a filtering chamber, the peripheral wall of the filtering chamber is provided with a water passing port (22) and a blocking part (23) which is arranged at a distance (4) from the water passing port (22) near the upper end of the peripheral wall, at least one circle of water passing part (24) which is arranged at a circumferential distance (4) is arranged below the water passing port (22) and the blocking part (23) on the peripheral wall of the filtering chamber, the water passing part (24) can be communicated with the water inlet (12) and the water outlet (13) of the shell (1), and a first water passing channel (25) communicated with the water passing part (24) is arranged between the peripheral wall of the filtering chamber and the inner wall of the shell (1), wherein:

when the filter element (2) and the driving part (3) are located at the first position, a water passing opening (22) in a filtering cavity of the filter element (2) is communicated with a water outlet (13) of the shell (1), a blocking part (23) of the filtering cavity blocks a water inlet (12) of the shell (1), external tap water enters the filtering cavity (21) of the valve core (6) from the water inlet (12) through a first water passing channel (25) and a water passing part (24), and filtered water filtered by the filter element (2) flows to the water outlet (13) of the shell (1) through the water passing opening (22) so as to realize water purification operation;

under the state that the filter element (2) and the driving piece (3) are located at the second position, a water passing opening (22) in a filtering cavity of the filter element (2) is communicated with a water inlet (12) of the shell (1), a blocking part (23) of the filtering cavity blocks a water outlet (13) of the shell (1), external tap water flows through a first water passing channel (25) and a water passing part (24) from the water inlet (12) and enters the filtering cavity (21) of the valve core (6), and backwashing water for scraping impurities attached to the surface of the filter element (2) flows out of a water outlet (14) of the shell (1) so as to realize backwashing operation.

3. The pre-filter for a gas water heater according to claim 2, wherein: the filter is characterized in that a space (4) is formed between the lower end of the filter chamber and the shell (1), a connecting piece (5) which is connected with the driving piece (3) and the filter element (2) is arranged in the space (4), and at least one communicating part (51) communicated with the water outlet (14) is formed in the connecting piece (5) at a circumferential space (4).

4. The pre-filter for a gas water heater of claim 3, wherein: the driving piece (3) comprises a driving barrel with an open upper end and a closed lower end, a partition plate (31) is arranged in the driving barrel, the partition plate (31) separates the driving barrel into a first cavity (32) used for accommodating the lower sections of the shell (1) and the filter element (2), a first connecting port (311) communicated with a water outlet (14) of the shell (1) is formed in the center of the partition plate (31), correspondingly, the bottom of the filter element (2) is formed in the way that the first connecting port (311) is matched with the second connecting port (26) of the connecting piece (5) to be connected together.

5. The pre-filter for a gas water heater of claim 4, wherein: the partition plate (31) divides the driving cylinder into a second chamber (33) which is positioned below the first chamber (32) and used for accommodating an anti-freezing mechanism, the second chamber (33) is provided with a discharge port (331) communicated with the second connecting port (26), the anti-freezing mechanism comprises a valve core (6) which can be rotatably arranged in the second chamber (33), and the valve core (6) is provided with a second water passing channel (61) communicated with the first connecting port (311) and the discharge port (331).

6. The pre-filter for a gas water heater of claim 5, wherein: the anti-freezing mechanism further comprises a valve rod (62), one end of the valve rod (62) penetrates through the valve body to be connected with the valve core (6), and the other end of the valve rod (62) is located outside the valve body and serves as a driving end.

7. The pre-filter for a gas water heater according to any one of claims 1 to 6, wherein: the scraping part (15) is a vertical scraping strip arranged on the inner wall of the shell (1) at intervals (4).