A filter core and pre-filter with large pollution space and self-settling anti-backflow

Abstract

The utility model relates to a filter core and prefilter with big pollution space and self-settling anti-backflow, the pollution discharge mechanism includes pollution unit and anti -backflow unit, the pollution unit includes pollution shell and pollution cavity, and anti -backflow unit includes anti -backflow shell and anti -backflow cavity, and pollution cavity and anti -backflow cavity are relatively fixed and set up, and pollution cavity is equipped with at least one pollution inlet, is equipped with at least one blocking element on the communication path of pollution inlet and pollution cavity, for preventing the impurity of pollution cavity reverse flow to pollution inlet, and anti -backflow cavity is equipped with at least one pollution discharge port, and pollution shell is equipped with assembly part still, for with the backflush drive shaft connection of prefilter, the filter core is optimized, and the pollution space is expanded to the pollution end, and through the design of backflow element, avoid the impurity of sedimentation or washing to flow to filter bottle, ensure the effect of every time cleaning, filter end, through setting any one or several structures in vortex flow channel, impeller and water flow directional cover, accelerate water flow disturbance, be favorable to impurity sedimentation and separation.

Description

Technical Field

[0001] This utility model relates to a filter element and pre-filter with a large dirt-holding space and self-settling and backflow prevention, belonging to the technical field of water purification equipment. Background Technology

[0002] Municipal tap water suffers from secondary pollution such as pipe corrosion and sediment, leading to deterioration of household water quality. Pre-filters are typically installed on the inlet pipes to improve water quality. Currently, pre-filter cartridges on the market are mainly of mesh or disc type. Cleaning methods include forward rinsing, backwashing, siphon cleaning, or brushing. However, both mesh and disc types have limitations in their drainage structure, such as small dirt-holding space, making it difficult to clean the cartridge thoroughly. Automatic rinsing or brushing further exacerbates this, as impurities can easily flow back into the filter bottle, limiting the cleaning effect, shortening the cartridge's lifespan, and compromising the water filtration quality of the pre-filter.

[0003] Therefore, it is necessary to design a structure suitable for pre-filters that can confine impurities that have settled, been washed, or been flushed down through certain spaces or components, preventing impurities from repeatedly flowing into the filter bottle. The researchers of this application, through structural optimization design and experimental simulation, have developed a filter element with a large dirt-holding space and the ability to effectively prevent impurities from settling and flowing back into the filter bottle. This element has been used in the design and development of a new type of backwashing pre-filter, achieving excellent results, significantly improving the cleaning effect of the filter element, extending its service life, and greatly ensuring the quality of water filtration. Utility Model Content

[0004] One of the objectives of this invention is to address the shortcomings of existing pre-filters in terms of their wastewater discharge structure, providing a filter element with a large dirt-holding capacity and self-settling to prevent backflow. This filter element is optimized, with an expanded dirt-holding capacity at the discharge end. Furthermore, the design of the backflow element prevents sedimented or rinsed impurities from flowing back into the filter bottle, ensuring the effectiveness of each cleaning. At the filtration end, by incorporating one or more of the following structures—a vortex channel, an impeller, and a water flow directional hood—the water flow turbulence is accelerated, facilitating impurity sedimentation and precipitation.

[0005] The second objective of this utility model is to provide a pre-filter with a large dirt-holding space and a self-settling and anti-backflow filter element. Through structural optimization design and experimental simulation, good results have been achieved, significantly improving the cleaning effect of the filter element, extending the service life of the filter element, and greatly ensuring the quality of water filtration.

[0006] The technical solution adopted by this utility model to solve its technical problem is:

[0007] A filter cartridge with a large dirt-holding space and self-settling anti-backflow features includes a filter cartridge frame, a filter element fitted onto the filter cartridge frame, and a drain mechanism located at the end of the filter cartridge frame. The drain mechanism includes a dirt-holding unit and an anti-backflow unit. The dirt-holding unit includes a dirt-holding shell and a dirt-holding cavity. The anti-backflow unit includes an anti-backflow shell and an anti-backflow cavity. The dirt-holding cavity and the anti-backflow cavity are fixedly arranged relative to each other. The dirt-holding cavity has at least one dirt inlet. At least one baffle element is provided on the communication path between the dirt inlet and the dirt-holding cavity to prevent impurities in the dirt-holding cavity from flowing back to the dirt inlet. The anti-backflow cavity has at least one drain outlet.

[0008] Preferably, it further includes a backwash frame coaxially inserted into the filter element frame, a backwash filter element sleeved on the end of the backwash frame, and an adjustment mechanism provided between the backwash frame and the filter element frame. The dirt-holding housing is also provided with an assembly part for connecting with the backwash drive shaft of the backwash frame. The water inlet end of the filter element frame is provided with a spiral water inlet channel, and / or an impeller is provided on the lower side of the water inlet channel, and / or a filter element cover is sleeved on the lower side of the impeller. The outer circumferential side of the filter element cover is provided with several spiral channels.

[0009] Preferably, the sludge-collecting housing includes a housing cover, an upper cover edge extending axially upward from the housing cover, a lower cover edge extending axially downward from the housing cover, the inner cavity of the lower cover edge forming a sludge-collecting cavity, the circumferential connection of the upper cover edge being able to be circumferentially sealed with the pre-filter, and the sludge inlet being located on the housing cover.

[0010] Preferably, the shell cover has a circumferentially connected inlet for dirt inflow, and a plurality of baffle elements are provided, which are staggered in the inlet for dirt inflow. The gap between the baffle elements forms the inlet for dirt inflow. The baffle elements are inclined or have a blocking part to allow impurities to flow in the forward direction and prevent reverse flow.

[0011] Preferably, the baffle element is a blade, which is inclined from the inlet end of the inlet gap to the outlet end.

[0012] Preferably, the blades are arranged in a spiral inclined distribution along the sewage inlet, and the anti-backflow cavity is funnel-shaped.

[0013] Preferably, the contaminant housing has an assembly shaft or assembly shaft cavity that extends axially upward from its center, forming an assembly part.

[0014] Preferably, the drain outlets are radial, with the size of the drain outlets closer to the axis of the anti-backflow cavity being smaller than that of the drain outlets farther from the axis of the backflow cavity, so as to achieve graded and staggered discharge of impurities of different sizes.

[0015] Preferably, the sewage discharge mechanism is further fixedly provided with a sedimentation element downstream of the sewage outlet of the anti-backflow cavity. The sedimentation element includes a sedimentation shell and a sedimentation cavity. The sewage receiving unit, the anti-backflow unit, and the sedimentation element are all made of transparent material, which facilitates observation of the sewage discharge status through the filter bottle. The filter element and the backwash filter element are respectively of the filter screen type or the stacked plate type. The upper cover has a sealing structure in the circumferential direction. The sealing structure is a sealing groove and / or a sealing strip.

[0016] A pre-filter includes a filter bottle and a filter element, and the filter element has a large dirt holding capacity and self-settling to prevent backflow.

[0017] The beneficial effects of this utility model are as follows: the filter element is optimized, the dirt-holding space at the discharge end is expanded, and the design of the backflow element prevents sedimented or rinsed impurities from flowing back into the filter bottle, ensuring the effectiveness of each cleaning. At the filtration end, by setting any one or more of the following structures—vortex channel, impeller, and water flow directional hood—the water flow turbulence is accelerated, which is conducive to the sedimentation and precipitation of impurities. This pre-filter, with its large dirt-holding space and self-falling sedimentation and anti-backflow discharge mechanism, has achieved excellent results through structural optimization design and experimental simulation, significantly improving the cleaning effect of the filter element, extending its service life, and greatly ensuring the quality of water filtration. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the structure of the filter element of this utility model;

[0019] Figure 2 yes Figure 1 A schematic diagram of the decomposition process;

[0020] Figure 3 This is a schematic diagram of a sewage discharge structure with a large sewage holding capacity and self-settling and backflow prevention features;

[0021] Figure 4 yes Figure 3 A partial schematic diagram;

[0022] Figure 5 It contains Figure 1 Cross-sectional view of the pre-filter of the filter element.

[0023] In the diagram: 1. Sludge receiving unit, 2. Anti-backflow unit, 3. Baffle element, 4. Assembly part, 5. Sludge inlet, 6. Sludge outlet, 7. Sedimentation element, 8. Spiral water inlet channel, 9. Impeller, 10. Filter element cover, A. Filter element frame, B. Adjustment mechanism, C. Backwash frame, C1. Backwash drive shaft, D. Filter element. Detailed Implementation

[0024] The technical solution of this utility model will be further described in detail below through specific embodiments and in conjunction with the accompanying drawings.

[0025] Example:

[0026] like Figure 1-4 As shown, a filter cartridge with a large dirt-holding space and self-falling sedimentation and backflow prevention includes a filter cartridge frame A, a filter element D sleeved on the filter cartridge frame A, and a sewage discharge mechanism located at the end of the filter cartridge frame A. The sewage discharge mechanism includes a dirt-holding unit 1 and an anti-backflow unit 2. The dirt-holding unit 1 includes a dirt-holding shell and a dirt-holding cavity. The anti-backflow unit 2 includes an anti-backflow shell and an anti-backflow cavity. The dirt-holding cavity and the anti-backflow cavity are fixedly arranged relative to each other. The dirt-holding cavity is provided with at least one dirt inlet 5. At least one baffle element 3 is provided on the communication path between the dirt inlet 5 and the dirt-holding cavity to prevent impurities in the dirt-holding cavity from flowing back to the dirt inlet 5. The anti-backflow cavity is provided with at least one sewage discharge port 6.

[0027] In this embodiment, it also includes a backwash frame C coaxially inserted into the filter element frame A, a backwash filter element sleeved on the end of the backwash frame C, and an adjustment mechanism B disposed between the backwash frame C and the filter element frame A. The dirt-holding housing is also provided with an assembly part 4 for connecting with the backwash drive shaft C1 of the backwash frame C. The water inlet end of the filter element frame A is provided with a spiral water inlet channel 8, and / or an impeller 9 is provided on the lower side of the water inlet channel 8, and / or a filter element cover 10 is sleeved on the lower side of the impeller 9. The outer circumferential surface of the filter element cover 10 is provided with several spiral channels.

[0028] In this embodiment, the filth-collecting housing includes a housing cover, an upper cover edge extending upward from the housing cover axially, a lower cover edge extending downward from the housing cover axially, the inner cavity of the lower cover edge forming a filth-collecting cavity, the circumferential connection of the upper cover edge to the circumferential connection of the pre-filter, and the filth inlet located on the housing cover.

[0029] In this embodiment, the shell cover is provided with a connected inlet for dirt in the circumference. A plurality of baffle elements 3 are provided and are staggered in the inlet for dirt in the inlet for dirt in the gap between the baffle elements 3 to form the inlet for dirt in the inlet. The baffle elements 3 are provided at an angle or with a blocking part to allow impurities to flow in the forward direction and prevent reverse flow.

[0030] In this embodiment, the baffle element 3 is a blade, which is inclined from the inlet end of the inlet gap to the outlet end.

[0031] In this embodiment, the blades are arranged in a spiral-shaped inclined distribution along the sewage inlet, and the anti-backflow cavity is funnel-shaped.

[0032] In this embodiment, the center of the dirt-collecting shell is axially extended upward and fixedly provided with an assembly shaft or an assembly shaft cavity, forming an assembly part 4.

[0033] In this embodiment, the drain outlet 6 is radial, and the size of the drain outlet near the axis of the anti-backflow cavity is smaller than that of the drain outlet far from the axis of the backflow cavity, so as to achieve graded and staggered discharge of impurities of different sizes.

[0034] In this embodiment, a sedimentation element 7 is fixedly provided downstream of the sewage outlet 6 of the anti-backflow cavity in the sewage discharge mechanism. The sedimentation element 7 includes a sedimentation shell and a sedimentation cavity. The sewage receiving unit 1, the anti-backflow unit 2 and the sedimentation element 7 are all made of transparent materials, which makes it easy to observe the sewage discharge status through the filter bottle.

[0035] In this embodiment, the filter element and the backwash filter element are respectively a filter screen type or a stacked plate type. The upper cover has a sealing structure in the circumferential direction. The sealing structure is a sealing groove and / or a sealing strip.

[0036] like Figure 5 As shown, a pre-filter includes a filter bottle and a filter element. The filter element has a large dirt-holding space and self-settling to prevent backflow. The assembly part of the sewage discharge mechanism is fixedly connected to the drive shaft of the backwashing mechanism.

[0037] The beneficial effects of this utility model are as follows: the filter element is optimized, the dirt-holding space at the discharge end is expanded, and the design of the backflow element prevents sedimented or rinsed impurities from flowing back into the filter bottle, ensuring the effectiveness of each cleaning. At the filtration end, by setting any one or more of the following structures—vortex channel, impeller, and water flow directional hood—the water flow turbulence is accelerated, which is conducive to the sedimentation and precipitation of impurities. This pre-filter, with its large dirt-holding space and self-falling sedimentation and anti-backflow discharge mechanism, has achieved excellent results through structural optimization design and experimental simulation, significantly improving the cleaning effect of the filter element, extending its service life, and greatly ensuring the quality of water filtration.

[0038] The embodiments described above are merely preferred embodiments of the present invention and are not intended to limit the present invention in any way. Other variations and modifications may be made without departing from the technical solutions described in the claims.

Claims

1. A filter cartridge with a large dirt-holding capacity and self-settling to prevent backflow, comprising a filter cartridge frame (A), a filter element (D) sleeved on the filter cartridge frame (A), and a dirt discharge mechanism disposed at the end of the filter cartridge frame (A), characterized in that: The sewage discharge mechanism includes a sewage receiving unit (1) and an anti-backflow unit (2). The sewage receiving unit (1) includes a sewage receiving shell and a sewage receiving cavity. The anti-backflow unit (2) includes an anti-backflow shell and an anti-backflow cavity. The sewage receiving cavity and the anti-backflow cavity are fixedly arranged relative to each other. The sewage receiving cavity is provided with at least one sewage inlet (5). At least one baffle element (3) is provided on the communication path between the sewage inlet (5) and the sewage receiving cavity to prevent impurities in the sewage receiving cavity from flowing back to the sewage inlet (5). The anti-backflow cavity is provided with at least one sewage outlet (6).

2. The filter element with a large dirt-holding capacity and self-falling sedimentation to prevent backflow as described in claim 1, characterized in that; It also includes a backwash frame (C) coaxially inserted into the filter element frame (A), a backwash filter element (D) sleeved on the end of the backwash frame (C), and an adjustment mechanism (B) provided between the backwash frame (C) and the filter element frame (A). The dirt-holding housing is also provided with an assembly part (4) for connecting with the backwash drive shaft of the backwash frame (C). The water inlet end of the filter element frame (A) is provided with a spiral water inlet channel (8), and / or an impeller (9) is provided on the lower side of the water inlet channel, and / or a filter element cover (10) is sleeved on the lower side of the impeller (9). The outer circumferential side of the filter element cover (10) is provided with several spiral channels.

3. A filter element with a large dirt-holding capacity and self-settling to prevent backflow, as described in claim 1 or 2, characterized in that... The sludge-holding housing includes a housing body, an upper cover edge extending upward from the housing body, a lower cover edge extending downward from the housing body, the inner cavity of the lower cover edge forming a sludge-holding cavity, the circumferential connection of the upper cover edge to the circumferential connection of the pre-filter, and the sludge inlet (5) located on the housing body.

4. A filter element with a large dirt-holding capacity and self-settling to prevent backflow, as described in claim 3, is characterized in that... The shell cover has a connected inlet for dirt in the circumference. Several baffle elements (3) are provided and are staggered in the inlet for dirt in the inlet. The gap between the baffle elements (3) forms the inlet for dirt in the inlet (5). The baffle elements (3) are inclined or have a blocking part to allow impurities to flow in the forward direction and prevent reverse flow.

5. A filter element with a large dirt-holding capacity and self-settling to prevent backflow, as described in claim 4, is characterized in that... The baffle element (3) is a blade, which is inclined from the inlet end of the inlet gap to the outlet end.

6. A filter element with a large dirt-holding capacity and self-falling sedimentation to prevent backflow, as described in claim 5, is characterized in that... The blades are arranged in a spiral inclined distribution along the sewage inlet, and the anti-backflow cavity is funnel-shaped.

7. A filter element with a large dirt-holding capacity and self-falling sedimentation to prevent backflow, as described in any one of claims 1 or 2, characterized in that, The contaminant housing is axially extended upward from the center and fixed with an assembly shaft or an assembly shaft cavity, forming an assembly part (4).

8. A filter element with a large dirt-holding capacity and self-falling sedimentation to prevent backflow, as described in any one of claims 1 or 2, characterized in that, The drain outlet (6) is radial, and the size of the drain outlet (6) near the axis of the anti-backflow cavity is smaller than that of the drain outlet (6) far from the axis of the backflow cavity, so as to achieve graded and staggered discharge of impurities of different sizes.

9. A filter element with a large dirt-holding capacity and self-falling sedimentation to prevent backflow, as described in claim 3, is characterized in that... The sewage discharge mechanism is also fixedly provided with a sedimentation element (7) downstream of the sewage outlet (6) of the anti-backflow cavity. The sedimentation element (7) includes a sedimentation shell and a sedimentation cavity. The sewage receiving unit (1), the anti-backflow unit (2) and the sedimentation element (7) are all made of transparent material, which makes it easy to observe the sewage discharge status through the filter bottle. The filter element (D) and the backwash filter element (D) are respectively a filter screen type or a stacked plate type. The upper cover is provided with a sealing structure in the circumferential direction. The sealing structure is a sealing groove and / or a sealing strip.

10. A pre-filter, comprising a filter bottle and a filter element, characterized in that, The filter element described in any one of claims 1-9 has a large dirt-holding capacity and self-settling and anti-backflow properties.

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