CN212091138U - Self-cleaning piston type filter and filtering system - Google Patents

Abstract

The utility model discloses a self-cleaning piston type filter and a filtering system, relating to the technical field of water quality treatment, wherein the self-cleaning piston type filter comprises a filter pipe, one end of the filter pipe is provided with a water inlet, the other end of the filter pipe is provided with a sewage discharge outlet, the side wall of the filter pipe is provided with a filter screen, the filter screen is provided with a plurality of filter holes, the filter pipe is also provided with a water outlet, and the water outlet is communicated with the filter screen; and install piston assembly in the filter tube, piston assembly includes clean piston, first pedestal and first elastic component, first pedestal is fixed on the filter tube, first elastic component one end supports and presses on the clean piston, the first elastic component other end supports and presses first pedestal, clean piston is including scraping the wall, scrape the wall with the filter screen laminating, clean piston installs the relief valve. The cleaning piston can effectively scrape oil stain residues on the filter screen, and the self-cleaning of the filter screen is effectively realized.

Description

Self-cleaning piston type filter and filtering system

Technical Field

The utility model relates to a water treatment technical field, in particular to automatically cleaning piston filter still relates to a filtration system.

Background

In the realization the utility model discloses the in-process, the inventor discovers that there is following problem at least among the prior art, at present, filter on the market is when clean filter screen blocking, there are manual clearance and electronic clearance dual mode, all can't realize self-cleaning, and the filter of manual clearance formula, because need manual clearance, generally need the manual periodic cleaning, only just clear up after the user discovery, forget easily, cause the filter screen blocking, the filter screen of long-term jam can influence the filter effect, shorten the life-span of filter screen even, and the filter price of electronic clearance is comparatively high, and need increase socket etc. near the filter, the installation is comparatively complicated.

Disclosure of Invention

The utility model discloses aim at solving one of the above-mentioned technical problem among the prior art to a certain extent at least. Therefore, the embodiment of the utility model provides a self-cleaning piston filter can realize self-cleaning filtration pore through water pressure, need not manual and electronic self-cleaning of realization.

The embodiment of the utility model provides a still provide a filtration system.

According to an embodiment of the first aspect of the present invention, there is provided a self-cleaning piston type filter, comprising a filtering pipe, wherein one end of the filtering pipe is provided with a water inlet, the other end of the filtering pipe is provided with a sewage outlet, a filtering net is arranged on the side wall of the filtering pipe, the filtering net is provided with a plurality of filtering holes, the filtering pipe is further provided with a water outlet, and the water outlet is communicated with the filtering net; and install piston assembly in the filter tube, piston assembly includes clean piston, first pedestal and first elastic component, first pedestal is fixed on the filter tube, first elastic component one end supports and presses on the clean piston, the first elastic component other end supports and presses first pedestal, clean piston is including scraping the wall, scrape the wall with the filter screen laminating, clean piston installs the relief valve.

The self-cleaning piston type filter at least has the following beneficial effects: through designing piston assembly, if the filtration pore on the filter screen takes place to block up, then the water pressure of filter tube inlet department can increase, and promote clean piston and remove towards sewage disposal department, clean piston other end provides corresponding holding power through first elastic component, clean piston removes the in-process, can correspondingly expose more filtration pore supplies rivers and pass through, when water pressure increases to certain pressure, install the relief valve on clean piston and open, afterwards, clean piston resets towards water inlet department, clean piston is at the in-process that resets, scrape the wall with the filter screen laminating and can scrape the greasy dirt residue on the filter screen, the greasy dirt residue is discharged from the sewage disposal mouth, behind the filtration pore mediation on the filter screen, the rivers flow direction delivery port of water inlet, when the pressure of water inlet reaches balanced, the relief valve is closed. The utility model discloses a clean piston that removes can effectively strike off the greasy dirt residue on the filter screen, effectively realizes the automatically cleaning of filter screen.

According to the utility model discloses an embodiment of the first aspect, clean piston still includes piston body and piston pedestal, the piston body court the water inlet direction sets up, the blowoff hole has been seted up to the piston body, it is located between piston body and the piston pedestal to scrape the wall, the relief valve includes blowdown stopper and second elastic component, the blowdown stopper support press on the blowoff hole, second elastic component one end support press on the blowdown stopper, the second elastic component other end supports presses in one side of piston pedestal.

According to the utility model discloses the embodiment of first aspect, the spacing ring has been arranged in the filter tube, the spacing ring with first pedestal is arranged respectively the both sides of clean piston.

According to the utility model discloses the embodiment of first aspect, the piston body is the taper pipe form, the inboard notch court of piston body the water inlet direction is arranged.

According to the utility model discloses the embodiment of the first aspect, the piston body with scrape wall integrated into one piece, the piston body with scrape the shaping between the wall and have the sword of scraping.

According to the utility model discloses an embodiment of the first aspect, the piston pedestal with scrape and be provided with first sealing washer between the wall, the blowoff hole of piston body is provided with the second sealing washer.

According to the utility model discloses the embodiment of first aspect, piston pedestal cavity, piston pedestal one side is provided with the first spring spacing ring that is used for restricting first elastic component radial movement, and the opposite side is provided with the second spring spacing ring that is used for restricting second elastic component radial movement.

According to the utility model discloses the embodiment of the first aspect, the filter tube middle part is provided with an annular transition pipeline section, the filter screen is located this transition pipeline section, the delivery port sets up on the transition pipeline section, the delivery port is connected with the outlet pipe.

According to an embodiment of the second aspect of the present invention, there is provided a filtration system comprising a self-cleaning piston filter according to an embodiment of the first aspect of the present invention; the upper part of the water tank is communicated with the water outlet through a pipeline, the bottom of the water tank is communicated with the water inlet through a pipeline, the water outlet is provided with a water pump, and the sewage outlet is connected with a sewage discharge pipe.

The filtering system at least has the following beneficial effects: sewage enters the self-cleaning piston type filter from the water tank to be filtered, the filtered purified water is output from the water outlet and is conveyed to the water return tank by the water pump to form a circulating system, and in addition, the filtered oil stain residues can be discharged from the sewage discharge outlet.

According to the utility model discloses the embodiment of the third aspect provides a filtration system, include the utility model discloses the first aspect embodiment automatically cleaning piston filter, the water inlet is connected with the inlet tube, the drain is connected with the blow off pipe, the surge damping valve is installed to the inlet tube, the check valve is installed to the blow off pipe.

The filtering system at least has the following beneficial effects: water flow enters the self-cleaning piston type filter through the water inlet pipe to be filtered, filtered purified water is output from the water outlet to be used by a user, and filtered dirt particles and the like are discharged from the sewage outlet.

Drawings

In order to more clearly illustrate the technical solution in the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly described below. It is clear that the described figures represent only some embodiments of the invention, not all embodiments, and that a person skilled in the art can also derive other designs and figures from these figures without inventive effort.

Fig. 1 is a perspective view of an embodiment of the first aspect of the present invention;

FIG. 2 is a perspective cutaway view of an embodiment of a second aspect of the present invention;

fig. 3 is a cut-away view of an embodiment of the first aspect of the invention;

figure 4 is a cut-away view in perspective of a cleaning piston in an embodiment of the first aspect of the invention;

fig. 5 is a sectional view of a filter tube in an embodiment of the first aspect of the present invention;

fig. 6 is a schematic structural diagram of an initial state of an embodiment of the first aspect of the present invention;

fig. 7 is a schematic structural diagram of a filtering state according to an embodiment of the present invention;

fig. 8 is a schematic structural view of a filtration state according to an embodiment of the present invention, in which some of the filtration pores are clogged;

fig. 9 is a schematic structural view of a filtering state of an embodiment of the present invention, in which a part of the filtering holes are blocked and the cleaning piston moves down;

fig. 10 is a schematic structural view of a filtration state according to an embodiment of the present invention, in which all the filtration pores are clogged;

fig. 11 is a schematic structural view of a blowdown phase of an embodiment of the first aspect of the present invention, wherein the pressure relief valve is open;

fig. 12 is a schematic view of a blowdown phase of an embodiment of the first aspect of the present invention, wherein the cleaning piston is reset;

fig. 13 is a schematic structural view of an embodiment of the second aspect of the present invention;

fig. 14 is a schematic structural diagram of an embodiment of the third aspect of the present invention.

Detailed Description

This section will describe in detail the embodiments of the present invention, preferred embodiments of the present invention are shown in the attached drawings, which are used to supplement the description of the text part of the specification with figures, so that one can intuitively and vividly understand each technical feature and the whole technical solution of the present invention, but they cannot be understood as the limitation of the protection scope of the present invention.

In the description of the present invention, it should be understood that the positional or orientational descriptions, such as the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., are the positional or orientational relationships shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element so referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the present invention. Furthermore, if the terms "first" and "second" are used, they are used for distinguishing technical features, and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated or implicitly indicating the precedence of the technical features indicated.

In the description of the present invention, "a plurality" means one or more, "a plurality" means two or more, "more than", "less than", "more than" and the like are understood as excluding the present number, "more than", "less than", "more than" and the like are understood as including the present number, unless otherwise specifically limited.

In the description of the present invention, unless explicitly defined otherwise, terms such as "set", "arrange", "install", "connect", "fix" and the like should be understood in a broad sense, and those skilled in the art can reasonably determine the specific meanings of the above terms in the present invention by combining the specific contents of the technical solutions.

In the description of the present invention, unless otherwise expressly limited, a first feature "on" or "under" a second feature may be directly contacting the first feature or the second feature or indirectly contacting the first feature or the second feature through intervening media. Also, a first feature may be "on" or "over" or "on" a second feature, and may be directly on or obliquely above the second feature, or may simply mean that the first feature is at a higher level than the second feature. A first feature being "under" or "beneath" a second feature may be directly under or obliquely under the second feature, or simply indicate that the first feature is at a lesser level than the second feature.

Referring to fig. 1 to 5, a self-cleaning piston type filter includes a filter tube 10 and a piston assembly installed in the filter tube 10.

As shown in fig. 1 to 3, one end of the filtering pipe 10 has a water inlet 11, the other end of the filtering pipe 10 has a sewage draining outlet 12, and the filtering pipe 10 is further provided with a water outlet 13. Referring to fig. 5, a filter screen 14 is disposed on a side wall of the filter pipe 10, the filter screen 14 has a plurality of filter holes 15, and the water outlet 13 is communicated with the filter screen 14.

The piston assembly includes a cleaning piston 30, a first seat 17 and a first elastic member 18. Specifically, the first seat 17 is fixed to the filter pipe 10, and the first seat 17 is hollow. In this embodiment, the first elastic element 18 is a compression spring, as shown in fig. 2 and fig. 3, one end of the first elastic element 18 abuts against the cleaning piston 30, and the other end of the first elastic element 18 abuts against the first seat 17. In addition, as a preferred option, the limiting ring 16 is disposed in the filtering pipe 10, and the limiting ring 16 and the first seat 17 are disposed on two sides of the cleaning piston 30, the limiting ring 16 of this embodiment may be replaced by a limiting block, as shown in fig. 2 and 3, the limiting ring 16 limits the movement of the cleaning piston 30 towards the water inlet 11, and of course, after the water flows into the water inlet 11, even if the limiting ring 16 is not disposed, the water pressure also limits the movement of the cleaning piston 30.

Referring to fig. 4, the cleaning piston 30 includes a scraping wall 32, the scraping wall 32 is attached to the filter screen 14, and the cleaning piston 30 is provided with a pressure relief valve 35.

The water flow enters the filter pipe 10 from the water inlet 11, is filtered by the filter screen 14 and then flows out from the water outlet 13. Preferably, an annular transition pipe section 21 is arranged in the middle of the filtering pipe 10, the filtering net 14 is located in the transition pipe section 21, the water outlet 13 is arranged on the transition pipe section 21, and the water outlet 13 is connected with a water outlet pipe 22, in this embodiment, the filtering holes 15 are arranged in the middle of the filtering pipe 10 and are uniformly distributed along the circumference of the filtering pipe 10 and are divided into a plurality of rows, and the annular transition pipe section 21 can buffer water flow flowing to the water outlet 13 after the water flow is filtered by the filtering net 14.

If the filtering holes 15 on the filtering net 14 are blocked, the water pressure at the water inlet 11 of the filtering pipe 10 is increased, and the cleaning piston 30 is pushed to move towards the sewage draining outlet 12, the other end of the cleaning piston 30 provides corresponding supporting force through the first elastic part 18, more filtering holes 15 are correspondingly exposed in the moving process of the cleaning piston 30 for water to pass through, when the water pressure is increased to a certain pressure, the pressure relief valve 35 arranged on the cleaning piston 30 is opened, the water pressure of the cleaning piston 30 towards one side of the water inlet 11 is gradually reduced, then, the cleaning piston 30 is reset towards the water inlet 11, in the resetting process of the cleaning piston 30, the oil stain residues on the filtering net 14 can be scraped by the scraping wall 32 attached to the filtering net 14, the oil stain residues are discharged from the sewage draining outlet 12, after the filtering holes 15 on the filtering net 14 are dredged, the water flow of the water inlet 11 flows to the water, the relief valve 35 is closed.

Specifically, the cleaning piston 30 further includes a piston body 31 and a piston seat 33, and the scraping wall 32 is located between the piston body 31 and the piston seat 33. Wherein, be provided with first sealing washer 34 between piston pedestal 33 and the wall 32 of scraping, piston body 31 and the wall 32 integrated into one piece of scraping, the shaping has scraping edge 322 between piston body 31 and the wall 32 of scraping, and piston body 31 sets up towards water inlet 11 direction, and piston body 31 is the taper pipe form, and the inboard notch of piston body 31 arranges towards water inlet 11 direction, and in the reset process of cleaning piston 30, can refer to fig. 3, cleaning piston 30 rebound, and annular scraping edge 322 can shovel away the filth on filter screen 14.

The piston body 31 is provided with a sewage discharge hole 311, the pressure release valve 35 comprises a sewage discharge plug 352 and a second elastic piece 351, the sewage discharge plug 352 is pressed on the sewage discharge hole 311, and the sewage discharge hole 311 of the piston body 31 is provided with a second sealing ring 312. One end of the second elastic member 351 abuts against the drainage plug 352, and the other end of the second elastic member 351 abuts against one side of the piston seat 33.

The piston seat body 33 is hollow, one side of the piston seat body 33 is provided with a first spring limiting ring 331 for limiting the radial movement of the first elastic member 18, the other side of the piston seat body is provided with a second spring limiting ring 332 for limiting the radial movement of the second elastic member 351, and the second spring limiting ring 332 is provided with a through hole for the movement of the drain plug 352.

Referring to fig. 6 to 12, the working principle flow of the self-cleaning piston type filter is shown. Fig. 6 shows an initial state, in which no water flow is introduced into the water inlet 11; referring to fig. 7, at this time, water flows into the filtering pipe 10 from the water inlet 11 and pushes the cleaning piston 30 to move downward, and the filtering holes 15 on the upper portion of the filtering net 14 are communicated with the water inlet 11; after filtering for a while, each filtering hole 15 on the upper portion of the filtering net 14 is gradually blocked, as shown in fig. 8; at this time, the water flow pushes the cleaning piston 30 to move downwards continuously, and the filtering holes 15 in the middle and the lower part of the filtering net 14 are gradually exposed to conduct the water inlet 11 and the water outlet 13, as shown in fig. 9 and 10; referring to fig. 11, each filtering hole 15 on the filtering net 14 is blocked, at this time, the pressure above the cleaning piston 30 is increased, the pressure relief valve 35 is opened, that is, the drain plug 352 moves downwards, the second elastic member 351 is compressed, and the drain hole 311 is communicated with the drain outlet 12; referring to fig. 12 again, because water inlet 11 and drain 12 switch on, the pressure is unanimous about the clean piston 30, and at this moment, clean piston 30 resets gradually, and at this moment, the wall 32 of scraping with filter screen 14 laminating can scrape the greasy dirt residue on the filter screen 14, and greasy dirt residue discharges from drain 12, scrapes the dirt that blade 322 can make on the filter screen 14 and scrapes more easily. When the filtering holes 15 on the filtering net 14 are dredged, the water flow of the water inlet 11 flows to the water outlet 13, and when the pressure of the water inlet 11 reaches balance, the pressure relief valve 35 is closed, and at this time, the state can refer to fig. 7.

Further, the set pressure of the relief valve 35 is greater than the initial elastic force of the first elastic member 18, and it is understood that the initial elastic force of the second elastic force 351 is greater than the initial elastic force of the first elastic member 18, so that when the water pressure of the filter pipe 10 increases, the cleaning piston 30 pushes down the first elastic member 18 first. The water pressure of the inlet water is greater than the elastic force of the second elastic force 351 when the drain plug 352 is opened, so that when the water pressure in the filter pipe 10 is increased to the water pressure of the inlet water, the drain plug 352 is smoothly opened to discharge oil stain residues and the like. Before the cleaning piston 30 descends to the lowest filtering hole 15, the elastic force of the first elastic member 18 should be smaller than the elastic force of the second elastic member 351 when the drain plug 352 is opened, so as to ensure that all filtering holes 15 in the filtering pipe 10 are fully utilized.

Referring to fig. 13, the embodiment of the utility model provides a still shows a filtration system, including foretell automatically cleaning piston filter and pond 41, pipeline and delivery port 13 intercommunication are passed through on pond 41 upper portion, and pipeline and water inlet 11 intercommunication are passed through to pond 41 bottom, and delivery port 13 is equipped with water pump 42, and drain 12 is connected with blow off pipe 45. Further, the sewage drain pipe 45 is provided with a residue crusher 43. This filtration system can be used to the sewage in filtering water tank 41, and sewage gets into self-cleaning piston filter from the pond and filters, and the water purification after the filtration is exported from the delivery port, is carried the return water tank 41 by water pump 42 in, forms circulation system, and in addition, the greasy dirt residue after the filtration can be followed the drain and is gone away to smash through residue grinder 43, residue grinder 43 can be preferably the present market is used for installing the residue grinder under the kitchen sink.

Referring to fig. 14, the embodiment of the utility model provides a still shows a filtration system, including foretell automatically cleaning piston filter, water inlet 11 is connected with inlet tube 44, and drain 12 is connected with blow off pipe 45, and surge damping valve 46 is installed to inlet tube 44, and check valve 47 is installed to blow off pipe 45. Further, the sewage drain pipe 45 is provided with a residue crusher 43. This filtration system is used for running water coarse filtration, and rivers get into automatically cleaning piston filter through inlet tube 44 and filter, and the water purification after the filtration is exported from the delivery port, supplies the user to use, and dirt particle etc. after the filtration are discharged from the drain to smash through residue grinder 43.

The embodiments of the present invention have been described in detail with reference to the accompanying drawings, but the present invention is not limited to the above embodiments, and various changes can be made without departing from the spirit of the present invention within the knowledge of those skilled in the art.

Claims (10)

1. A self-cleaning piston filter, comprising: comprises that

The sewage treatment device comprises a filter pipe (10), wherein one end of the filter pipe (10) is provided with a water inlet (11), the other end of the filter pipe (10) is provided with a sewage discharge outlet (12), a filter screen (14) is arranged on the side wall of the filter pipe (10), the filter screen (14) is provided with a plurality of filter holes (15), the filter pipe (10) is also provided with a water outlet (13), and the water outlet (13) is communicated with the filter screen (14); and

install piston assembly in filter tube (10), piston assembly is including clean piston (30), first pedestal (17) and first elastic component (18), first pedestal (17) are fixed on filter tube (10), first elastic component (18) one end supports and presses on clean piston (30), first elastic component (18) other end supports and presses first pedestal (17), clean piston (30) are including scraping wall (32), scrape wall (32) with filter screen (14) laminating, relief valve (35) are installed in clean piston (30).

2. A self-cleaning piston filter according to claim 1, characterised in that: the cleaning piston (30) further comprises a piston body (31) and a piston seat body (33), the piston body (31) is arranged towards the water inlet (11), a sewage discharge hole (311) is formed in the piston body (31), the scraping wall (32) is located between the piston body (31) and the piston seat body (33), the pressure release valve (35) comprises a sewage discharge plug (352) and a second elastic piece (351), the sewage discharge plug (352) is pressed on the sewage discharge hole (311), one end of the second elastic piece (351) is pressed on the sewage discharge plug (352), and the other end of the second elastic piece (351) is pressed on one side of the piston seat body (33).

3. A self-cleaning piston filter according to claim 1, characterised in that: a limiting ring (16) is arranged in the filter pipe (10), and the limiting ring (16) and the first seat body (17) are respectively arranged on two sides of the cleaning piston (30).

4. A self-cleaning piston filter according to claim 2, characterised in that: the piston body (31) is in a conical tube shape, and a notch on the inner side of the piston body (31) is arranged towards the water inlet (11).

5. A self-cleaning piston filter according to claim 2 or 4, characterised in that: the piston body (31) and the scraping wall (32) are integrally formed, and a scraping edge (322) is formed between the piston body (31) and the scraping wall (32).

6. A self-cleaning piston filter according to claim 2, characterised in that: a first sealing ring (34) is arranged between the piston seat body (33) and the scraping wall (32), and a second sealing ring (312) is arranged in a sewage discharge hole (311) of the piston body (31).

7. A self-cleaning piston filter according to claim 2 or 6, characterised in that: the piston seat body (33) is hollow, one side of the piston seat body (33) is provided with a first spring limiting ring (331) used for limiting the radial movement of the first elastic piece (18), and the other side of the piston seat body is provided with a second spring limiting ring (332) used for limiting the radial movement of the second elastic piece (351).

8. A self-cleaning piston filter according to claim 1 or 2, characterised in that: an annular transition pipe section (21) is arranged in the middle of the filter pipe (10), the filter screen (14) is located in the transition pipe section (21), the water outlet (13) is arranged on the transition pipe section (21), and the water outlet (13) is connected with a water outlet pipe (22).

9. A filtration system, characterized by: comprises that

A self-cleaning piston filter according to any one of claims 1 to 8; and

the water outlet device comprises a water tank (41), wherein the upper part of the water tank (41) is communicated with a water outlet (13) through a pipeline, the bottom of the water tank (41) is communicated with a water inlet (11) through a pipeline, a water pump (42) is arranged at the water outlet (13), and a sewage discharge pipe (45) is connected to the sewage discharge port (12).

10. A filtration system, characterized by: comprising a self-cleaning piston filter according to any one of claims 1-8, the water inlet (11) being connected to a water inlet pipe (44), the drain outlet (12) being connected to a drain pipe (45), the water inlet pipe (44) being equipped with a pressure maintaining valve (46), the drain pipe (45) being equipped with a non-return valve (47).

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