CN204395605U - Fore filter - Google Patents
Fore filter Download PDFInfo
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- CN204395605U CN204395605U CN201420816009.5U CN201420816009U CN204395605U CN 204395605 U CN204395605 U CN 204395605U CN 201420816009 U CN201420816009 U CN 201420816009U CN 204395605 U CN204395605 U CN 204395605U
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Abstract
The utility model discloses a kind of fore filter, comprise the filter simultaneously with cylindrical shell and skeleton filter screen, cylindrical shell has the filter cavity of accommodating skeleton filter screen and has the first feed pathway with filter cavity UNICOM, skeleton filter screen is cartridge type and in filter cavity, has predetermined stroke vertically, skeleton filter screen lateral wall has and is divided into screen pack and is positioned at the upper isolating ring of the backwash net above screen pack, the bottom lock of screen pack; At the high point of predetermined stroke, upper isolating ring is fitted with the top of the first feed pathway thus the first feed pathway is only communicated with screen pack; At the low spot of predetermined stroke, upper isolating ring is fitted with the bottom of the first feed pathway thus is entered fluid passage by first and is only communicated with backwash net; Filter cavity is connected with the first liquid outlet channel in the side of backwash net, is connected with drain outlet in the side of screen pack; Drain outlet place is provided with switch valve.This fore filter can solve the problem of screen pack developing result difference effectively.
Description
Technical field
The utility model relates to clean liquid plant machinery technical field, more particularly, relates to a kind of fore filter.
Background technology
Fore filter, is arranged on after input duct liquid table usually, to guarantee that a large amount of precipitated impurities produced in pipe network can not make injury to human body, and plays a positive role to concealed pipe, liquid tap and electrical equipment etc.Fore filter is the jinx of secondary pollution, is a kind of device for filtering impurities reliably.
With reference to figure 1, Fig. 1 is the structural representation of a kind of common fore filter in prior art, comprise jockey 101 and filter 102, wherein the liquid of the main liquid pipe upstream port of jockey 101 imports to the inlet of filter 102, then jockey 101 downstream port leading liquid-in pipe of liquid that filter is flowed out.So jockey 101 must have: the first connector be connected with liquid pipe upstream port, the second connector be connected with liquid pipe downstream port, the feed liquor flow export be connected with the inlet of filter 102, the fluid be connected with the liquid outlet of filter 102 flows to mouth.In using, liquid fails to be convened for lack of a quorum from the first connector and flows to, then flow into filter 101 from feed liquor flow export, flow into jockey 101 from liquid outlet become free from admixture liquid after the screen pack in filter 102 after, then flow into liquid pipe downstream port from the second connector again.The dirt that the surface attachment of screen pack can be made a large amount of when screen pack service time is longer, not only can cause screen pack to block, and also can cause the problem that screen pack service life is short, so need the dirt on periodic cleaning screen pack.In prior art, usually in filter 102, away from one end of liquid outlet and inlet, there is blowoff valve, when blowoff valve is opened, the liquid that the inlet of filter 102 flows to can wash away screen pack, then spill out from the valve port of blowoff valve together with dirt, to reach the object of cleaned filter screen.
Inventor entered long-term research and found, of the prior art only from the outside of screen pack, screen pack being washed away and reach the object of washing filter screen, the main problem by hydraulic pressure, the pressure of screen pack being reached to the online spot of washing and filtering, such flushing can be not thorough, and the water yield that washing filter screen will consume is large especially, and the developing result do not reached.
In sum, how effectively solving the problem of the screen pack developing result difference of fore filter, is current those skilled in the art's urgent problem.
Utility model content
In view of this, the purpose of this utility model is to provide a kind of fore filter, and this fore filter can solve the problem of screen pack developing result difference.
In order to achieve the above object, the utility model provides following technical scheme:
A kind of fore filter, comprise filter, described filter comprises cylindrical shell and skeleton filter screen, described cylindrical shell has the filter cavity of accommodating described skeleton filter screen and has the first feed pathway with described filter cavity UNICOM, described skeleton filter screen is cartridge type and in described filter cavity, has predetermined stroke vertically, described skeleton filter screen lateral wall has and is divided into screen pack and is positioned at the upper isolating ring of the backwash net above described screen pack, the bottom lock of described screen pack; At the high point of described predetermined stroke, described upper isolating ring is fitted with the top of described first feed pathway thus described first feed pathway is only communicated with described screen pack; At the low spot of described predetermined stroke, described upper isolating ring is fitted with the bottom of described first feed pathway thus is entered fluid passage by described first and is only communicated with described backwash net; Described filter cavity is connected with the first liquid outlet channel in the side of described backwash net, is connected with drain outlet in the side of described screen pack; Described drain outlet place is provided with switch valve.
Preferably, also comprise elastic component, described elastic component is connected between described skeleton filter screen and described cylindrical shell and to the height point of described predetermined stroke and applies elastic force to described skeleton filter screen; The lateral wall of the bottom of described screen pack has lower isolating ring, and at the high point of described predetermined stroke, the inwall of the lateral wall of described lower isolating ring and the import of described drain outlet is fitted to be separated in described drain outlet and described filter cavity; At the low spot of described predetermined stroke, between the lateral wall of described lower isolating ring and the inwall of the import of described drain outlet, there is space to be communicated with described filter cavity described drain outlet; During the valve closing of described switch valve, described skeleton filter screen can be positioned at the high point of described predetermined stroke under the resilient force of described elastic component; During described valve open, described skeleton filter screen can be positioned at the low spot of described predetermined stroke under the bottom external and internal pressure difference of described skeleton filter screen.
Preferably, described elastic component is Compress Spring, and described Compress Spring to be enclosed within described skeleton filter screen and to be positioned at below described upper isolating ring, and the offset other end and described cylindrical shell of one end of described Compress Spring and the lower surface of described upper isolating ring offsets.
Preferably, the inside of described cylindrical shell has cylindrical bore, also comprises back-up ring and lower back-up ring, and described cylindrical bore is divided into described first feed pathway, described filter cavity and described drain outlet by described upper back-up ring and described lower back-up ring.
Preferably, also comprise the recoil part in cartridge type placing described screen pack inside, the mouth end of described recoil part has impeller and the medial surface of the lateral surface of mouth end of described recoil part and the mouth end of described screen pack is fitted, the side of described recoil part is provided with delivery port, the bottom of described recoil part and the bottom connection of described screen pack touch, and described recoil part can rotate in described screen pack.
Preferably, the bottom of described screen pack has the lug boss of spherical, and the bottom of described recoil part has the groove of the spherical offseted with described lug boss.
Preferably, comprise shaft-like jockey, described jockey has the second feed pathway and the second liquid outlet channel, upper cover is provided with between described jockey and described filter, described upper cover has described first feed pathway of connection and also has with the 3rd feed pathway of described second feed pathway the 3rd liquid outlet channel being communicated with described first liquid outlet channel and described second liquid outlet channel, described upper cover is connected by least four removable connectors with described jockey, the liquid outlet of described second feed pathway and the inlet of described second liquid outlet channel are placed and the liquid outlet of described second feed pathway in the same direction, the inlet of described second liquid outlet channel and the projection of the tie point of all described connectors in the plane in vertical described direction have two line of symmetries, and the liquid outlet of the second feed pathway towards the axis being parallel with skeleton filter screen.
Preferably, the inlet of described second liquid outlet channel is rounded, the liquid outlet of described second feed pathway is circular ring type and is enclosed within the outside of the inlet of described liquid outlet channel, and the liquid outlet of the inlet of described second liquid outlet channel and described second feed pathway is coaxially placed.
Preferably, have in foursquare connected unit in the outside of the liquid outlet of described second feed pathway, the corner of described connected unit there are four holes passed for screw and described connected unit with the axis being parallel of described filter.
Preferably, between the liquid outlet of described second feed pathway and the inlet of described 3rd feed pathway, there is sealing gasket.
Preferably, the outward flange of the end of the inlet of described second liquid outlet channel has the first protruding pipe, the inward flange of the end of the liquid outlet of described 3rd liquid outlet channel has the second protruding pipe, described first protruding pipe is enclosed within outside described second protruding pipe, and is placed with sealing ring between described second protruding pipe and described first protruding pipe.
Preferably, the pressure regulator valve that the liquid outlet channel of described fore filter is arranged and/or Pressure gauge is also included in.
Preferably, the inlet end of described first liquid outlet channel has endoporus, outside and the described endoporus of the upper end of described backwash net are slidably matched, and have sealing ring between described endoporus and described backwash net, and the outside of the upper end of described backwash net has the groove placing described sealing ring.
Preferably, the two ends of described jockey all have articulation.
The fore filter that the utility model provides, main phase has made change for prior art to filter.Filter generally comprises cylindrical shell and skeleton filter screen, and the filter cavity that cylindrical shell has accommodating skeleton filter screen also has the first feed pathway with filter cavity UNICOM.Skeleton filter screen is also cartridge type and the predetermined stroke had in filter cavity vertically.Have upper isolating ring in the outside of skeleton filter screen, it is screen pack that skeleton filter screen is divided into upper end to be backwash net and lower end by upper isolating ring, and the bottom lock of screen pack.At the high point of predetermined stroke, upper isolating ring is fitted with the top of the first feed pathway thus the first feed pathway is only communicated with screen pack, and now filter is for being operated in filtered model.At the low spot of predetermined stroke, upper isolating ring is fitted with the bottom of the first feed pathway thus the first feed pathway is only communicated with backwash net, and now filter is operated in rinse mode.Filter cavity is connected with the first liquid outlet channel in the side of backwash net, is connected with drain outlet in the side of screen pack.Drain outlet is provided with switch valve.
According to above-mentioned technical scheme, can know, the fore filter that the utility model provides, be provided with a backwash passage, only when carrying out washing filter screen, liquid is through backwash passage, enter from backwash net, backwash net is inner to be communicated with screen pack inside.When needs carry out screen pack, switch valve is opened, filtration channel is communicated with drain outlet, fit in the bottom of upper isolating ring and the first feed pathway simultaneously, filtration channel closedown and filter cavity and the first feed pathway are disconnected, and the first feed pathway contacts with backwash net, backwash passage is opened, liquid flows through backwash net from backwash passage, then screen pack inside is flow into, because filter cavity is communicated with drain outlet, so liquid can flow through screen pack in the other direction, enter into Filtration Filtration cavity, thus enter into drain outlet.Because drain outlet communicates with air, so the hydraulic pressure of screen pack inside can be greater than outside hydraulic pressure, liquid is rinsed from inside to the carrying out of screen pack internal-external, compare and directly wash away from outside, make flushing pressure just just contrary with the adhesion suffered by dirt from interior flushing, and to depart from the direction of screen pack identical with dirt, got off by wash dirt so easier, and dirt leaves screen pack with liquid stream, thus enter into filtration channel.So the fore filter that the utility model provides can solve the problem of screen pack developing result difference effectively.
Accompanying drawing explanation
In order to be illustrated more clearly in the utility model embodiment or technical scheme of the prior art, be briefly described to the accompanying drawing used required in embodiment or description of the prior art below, apparently, accompanying drawing in the following describes is only embodiments more of the present utility model, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
Fig. 1 is the structural representation of a kind of common fore filter in prior art;
The structural representation of fore filter under filtered model that Fig. 2 provides for the utility model embodiment;
The structural representation of the skeleton filter screen that Fig. 3 provides for the utility model embodiment;
The structural representation of the recoil part that Fig. 4 provides for the utility model embodiment;
The structural representation of fore filter under rinse mode that Fig. 5 provides for the utility model embodiment;
The structural representation of the articulation that Fig. 6 provides for the utility model embodiment.
In accompanying drawing, mark is as follows:
Jockey 101, filter 102;
Filter 1, jockey 2, upper cover 3, pressure regulator valve 4, Pressure gauge 5, joint 6, nut 7, cylindrical shell 11, skeleton filter screen 12, Compress Spring 13, recoil part 14, upper back-up ring 15, lower back-up ring 16, screen pack 121, backwash net 122, upper isolating ring 123, lower isolating ring 124.
Detailed description of the invention
The utility model embodiment discloses a kind of for fore filter, effectively to solve the problem of screen pack developing result difference.
Below in conjunction with the accompanying drawing in the utility model embodiment, be clearly and completely described the technical scheme in the utility model embodiment, obviously, described embodiment is only the utility model part embodiment, instead of whole embodiments.Based on the embodiment in the utility model, those of ordinary skill in the art are not making the every other embodiment obtained under creative work prerequisite, all belong to the scope of the utility model protection.
Refer to Fig. 2-Fig. 6, in a kind of specific embodiment, present embodiments provide a kind of fore filter, fore filter comprises filter 1, filter 1 is generally connected on flow channel for liquids, first cut by the liquid of liquid pipe into filter 1, filter 1 pair of liquid filters, and the liquid stream of then having filtered gets back to liquid pipe.Filter comprises cylindrical shell 11 and skeleton filter screen 12, and cylindrical shell 11 has the filter cavity of accommodating skeleton filter screen 12, and has the first feed pathway with filter cavity UNICOM, and liquid filtering is esoteric at filter chamber.During filtration, the first feed pathway inserts the liquid into filter cavity inside.
Skeleton filter screen 12 is in cartridge type, and nozzle connects the first liquid outlet channel, and the liquid filtered leads back in liquid pipe by the first liquid outlet channel.The lateral wall of skeleton filter screen 12 has upper isolating ring 123, the backwash net 122 that self position is divided into screen pack 121 and is positioned at above screen pack 121 by upper isolating ring 123.Screen pack 121 is for by liquid filtering, and when filter liquide, liquid enters the inside of screen pack 121 from the outside of screen pack 121; Namely the liquid of the first feed pathway is imported to the inside of screen pack 121 in the liquid filtering stage by backwash net 122 when carrying out screen pack 121 and cleaning, liquid is from the interior stream of screen pack 121.
Skeleton filter screen 12 has predetermined stroke vertically in filter cavity, namely represents that skeleton filter screen 12 can move in filter cavity.At the high point of predetermined stroke, when namely skeleton filter screen advances to the height point of predetermined stroke, fit from by the first feed pathway and are only communicated with screen pack 121 in upper isolating ring 123 and the top of the first feed pathway, now whole filter 1 is operated in filtered model; At the low spot of predetermined stroke, when namely skeleton filter screen advances to the low spot of predetermined stroke, upper isolating ring 123 is fitted with the bottom of the first feed pathway thus the first feed pathway is only communicated with backwash net 122.It is emphasized that the first feed pathway can directly not contact with backwash net 122 with screen pack 121 herein, also can be communicated with by reaching with other passage.
Filter cavity is connected with the first liquid outlet channel in the side of backwash net 122, is connected with drain outlet in the side of screen pack 121; In drain outlet, place is provided with switch valve.When switch valve is opened, and when skeleton filter screen 12 is in the low spot of predetermined stroke, the first feed pathway is communicated with backwash net 122, and filter cavity is communicated with drain outlet, and now filter 1 is operated in rinse mode; When switch valve cuts out, and when skeleton filter screen 12 is in predetermined stroke height point, drain outlet is closed, and the first feed pathway is communicated with screen pack 121, and now filter 1 is operated in filtered model.Herein also it is emphasized that in use, also should limit current when filter 1 is operated in rinse mode and spill out from the first liquid outlet channel, concrete can increase a valve in liquid pipe, or in the first feed pathway, arrange a valve.
Skeleton filter screen 12 can move in cavity, so have relative movement between backwash net 122 and the first liquid outlet channel, so the sealing between backwash net 122 and the first liquid outlet channel is very important, a sealing ring can be increased between backwash net 122 and the first liquid outlet channel for this reason.Concrete can be, the inlet end of the first liquid outlet channel has endoporus, outside and this endoporus of the upper end of backwash net 122 are slidably matched, and a sealing ring is set between endoporus and backwash net 122, in order to make sealing ring difficult drop-off, can have in the arranged outside of the upper end of backwash net the groove placing sealing ring.
Need when switch valve is opened to adjust the low spot that skeleton filter screen 12 is positioned at predetermined stroke, the high point that skeleton filter screen 12 is positioned at predetermined stroke also will be adjusted when switch valve cuts out, the method of adjustment has a variety of, and the most direct way is manual adjustments, but comparatively bothers.For this reason, a kind of automatic position of adjustment skeleton filter screen 12 in predetermined stroke is present embodiments provided.Concrete, arrange an elastic component, this elastic component is connected between skeleton filter screen 12 and cylindrical shell 11 and to the height point of predetermined stroke and applies elastic force to skeleton filter screen 12.At the lateral wall of the bottom of screen pack 121, there is lower isolating ring 124; At the high point of predetermined stroke, the inwall of the lateral wall of lower isolating ring 124 and the import of drain outlet is fitted to be separated in drain outlet and filter cavity; And at the low spot of predetermined stroke, between the lateral wall of lower isolating ring 124 and the inwall of the import of drain outlet, there is space to be communicated with filter cavity drain outlet.Concrete can arrange a flange between drain outlet and filter cavity, when height point, the lateral wall of lower isolating ring 124 and the medial surface of flange are fitted, when skeleton filter screen 12 moves down into low spot, lower isolating ring 124 followed by and moves down, advance to the below of flange, make, between lower isolating ring 124 and flange, there is larger gap, filter cavity is communicated with drain outlet.When designing, should limit the elastic force of elastic component, elastic component is met the following conditions: during the valve closing of switch valve, skeleton filter screen 12 can be positioned at the high point of predetermined stroke under the elastic force effect of elastic component, now elastic force mainly overcomes gravity, so the concrete elastic force of elastic component should decide according to the gravity of skeleton filter screen 12, during valve open, skeleton filter screen 12 can be positioned at the low spot of described predetermined stroke under the bottom external and internal pressure difference of skeleton filter screen 12, now external and internal pressure difference area that is main and bottom has relation, because when the valve is open, the bottom outside moment of skeleton filter screen 12 communicates with air, be atmospheric pressure, and the inner side of bottom i.e. upside communicates with liquid pipe, the pressure that the upside of bottom is subject to is greater than atmospheric pressure, so have pressure differential inside and outside bottom, pressure differential can apply pressure to the low spot of predetermined stroke to skeleton filter screen 12, if elastic force that the is gravity of pressure differential and skeleton filter screen 12 itself and large and elastic component, now the elastic force of elastic component should be skeleton filter screen 12 is the elastic force that elastic component elastic deformation produces at low spot, then skeleton filter screen 12 can move to the low spot of predetermined stroke, and arrive low spot.On the contrary when the valve is closed, then drain outlet disconnects and atmosphere, but when liquid continues to enter into drain outlet, can make the pressure increase of the bottom of skeleton filter screen 12 until the private side pressure differential of bottom is less than the pressure differential of elastic force and gravity, skeleton filter screen 12 upwards can advance to the high point of predetermined stroke.Use in reality, only needing by opening or closing switch valve, making the skeleton filter screen 12 in filter 1 be operated in filtered model also from rinse mode, making operation more simple and convenient.General elastic component can use Compress Spring 13, resilience in comparison plate weight can be lighter, concrete Compress Spring 13 can be made to be enclosed within skeleton filter screen 12 and should be positioned at the below of upper isolating ring 123, one end of Compress Spring 13 and the lower surface of upper isolating ring 123 offset and the other end and cylindrical shell 11 offset.
Cylindrical shell 11 has the first feed pathway, filter cavity and drain outlet, more complicated may be manufactured, manufacture simply to make cylindrical shell 11, first the inside of cylindrical shell 11 can be provided with columniform vestibule, and then back-up ring 15 and lower back-up ring 16 on one are set in the inside of cylindrical shell 11, cylindrical bore is divided into the first feed pathway, filter cavity and drain outlet by upper back-up ring 15 and lower back-up ring 16 successively.Then skeleton filter screen 12 is at the high point of predetermined stroke, and have gap between upper back-up ring 15 and screen pack 121, namely filter cavity is connected with the first feed pathway, and the medial surface of lower back-up ring 16 and the lateral surface of lower isolating ring 124 are fitted, and drain outlet and filter cavity are separated; And when the low spot of predetermined stroke, upper isolating ring 123 and upper back-up ring 15 are fitted, filter cavity and the first feed pathway are separated, lower isolating ring 124 departs from lower back-up ring 16, makes to have between lower isolating ring 124 and lower back-up ring 16 space, drain outlet is communicated with filter cavity.Conveniently Compress Spring 13 is installed, the support of a grooved can be set in the below of upper back-up ring 15, the offset other end and support of the lower surface of one end of Compress Spring 13 and upper isolating ring 123 is offseted.
Carry out washing filter screen 121 time, water is generally outside from the internal impact of screen pack 121, reaches the effect of washing away outside dirt, but due to the pressure differential inside and outside screen pack 121 large not, may still not reach better developing result, so inner hydraulic pressure preferably can be improved.Concrete a kind of scheme can be increase a recoil part 14 in the inside of screen pack 121, this recoil part 14 is in cartridge type, the mouth end of recoil part 14 has impeller and the recoil lateral surface of mouth end of part 14 and the medial surface of the mouth end of screen pack 121 are fitted, to prevent water from flowing in screen pack 121 between the lateral surface of mouth end and the medial surface of the mouth end of screen pack 121 of recoil part 14, the water in backwash net 122 is only allowed to enter into recoil part 14 through impeller inner, the side of recoil part 14 is provided with delivery port, which reduce delivery port, namely the pressure suffered by screen pack 121 inside is added.Touch in the bottom of recoil part 14 and the bottom connection of screen pack 121, recoil part 14 can rotate in screen pack 121 simultaneously.Due to water entered impeller time, due to impeller structure itself, impeller can be made to produce moment of torsion, so can drive the part 14 that recoils to rotate, the concrete shape of impeller can with reference in hydrodynamics of the prior art to the design of blade.Water is little to the moment of torsion of impeller through impeller, in order to make the more smooth and easy quicker of wheel rotation, can be reached by the friction reduced in recoil part 14 rotation process and between screen pack 121.Concrete, the lug boss of spherical can be provided with in the bottom of screen pack 121, the bottom of recoil part 14 is provided with the groove of the spherical offseted with this lug boss, the recoil bottom of part 14 and the base contact surface of screen pack 121 reduce, in order to reduce contact surface further, the radius of lug boss can be made to be less than the radius of groove.
In general prior art, fore filter also can comprise jockey 2, jockey 2 external form is shaft-like, two ends are connected with liquid pipe respectively, middle part is connected with filter 1, jockey 2 is mainly incorporated into the liquid in liquid pipe in filter 1, is then led back in liquid pipe by the liquid of the inside of the screen pack 121 in filter 1.The placement of general liquid pipe level or vertical placement, so jockey 2 is also generally level or vertical placement, in order to make the skeleton filter screen 12 in filter 1 vertically place all the time, the connection of filter 1 and jockey 2 can be made for being rotatably connected.Concrete can adopt following way, and the feed pathway of jockey 2 is the second feed pathway, and the liquid outlet channel of jockey 2 is the second liquid outlet channel.General filter 1 entirety is cartridge type, can arrange upper cover 3, it should be emphasized that upper cover 3 also can be a part for filter 1 herein for convenience of connecting between jockey 2 and filter 1.Upper cover 3 has connection first feed pathway and also has with the 3rd feed pathway of the second feed pathway the 3rd liquid outlet channel being communicated with the first liquid outlet channel and the second liquid outlet channel, upper cover 3 is connected by least four removable connectors with jockey 1, the liquid outlet of the second feed pathway and the inlet of the second liquid outlet channel are placed in the same direction, and the liquid outlet of the second feed pathway, the projection in the plane in this direction vertical of the inlet of the second liquid outlet channel and the tie point of all connectors has two line of symmetries, and the liquid outlet of the second feed pathway towards the axis being parallel with skeleton filter screen 12.Can be that skeleton filter screen 2 is placed perpendicular to jockey 2 according to above-mentioned design, also make skeleton filter screen 2 can be parallel to jockey 2 and place, make in use can reach skeleton filter screen 2 all the time straight down.Two schemes is mainly contained for the liquid outlet of the second feed pathway and the inlet shape of the second liquid outlet channel: Yi Zhongshi, the cross section of the inlet cross section of the second liquid outlet channel and the liquid outlet of the second feed pathway can be square, but square rotating angle kind is few, another kind is, the inlet of the second liquid outlet channel can be made rounded, the liquid outlet of described second feed pathway is circular ring type and is enclosed within the outside of the inlet of the second liquid outlet channel, and the liquid outlet of the inlet of the second liquid outlet channel and the second feed pathway is coaxially placed, product design can be made fairly simple for this scheme and angle rotatable scope is maximum.Connection between concrete jockey 2 and upper cover 3 can be that bolt connects or screw connects, but optimum is, the outside of the liquid outlet of the second feed pathway has foursquare connected unit, the corner of this connected unit there are four holes passed for screw and connected unit while with the axis being parallel of filter 1, foursquare connected unit is easy for installation, and screw connects simple.In order to ensure sealing, generally to increase sealing ring at interface: first, because the inlet contact surface of the liquid outlet of the second feed pathway and the 3rd feed pathway is comparatively large, so a sealing gasket can be increased between both; Secondly because the end face of the end face of the inlet due to the second liquid outlet channel and the liquid outlet of the 3rd liquid outlet channel is less, so for the ease of placing sealing ring, the outward flange of the end of the inlet of the second liquid outlet channel can be made to have the first protruding pipe, the inward flange of the end of the liquid outlet of the 3rd liquid outlet channel has the second protruding pipe, first protruding pipe is enclosed within outside the second protruding pipe, between the second protruding pipe and the first protruding pipe, place a sealing ring.
If the pressure of the inlet of fore filter is substantially equal with the pressure of liquid outlet, thus cannot accomplish the Stress control of its liquid outlet, if the hypertonia of inlet, then the hypertonia of liquid outlet, is easy to damage end liquid inlet device product or pipeline.So usually need the pressure limiting the liquid that liquid pipe flows out, in case pressure is excessive, pressure regulator valve 4 can be set on the liquid outlet channel of fore filter to regulate and control the pressure of fore filter liquid outlet, in order to the pressure of liquid outlet better can be monitored, to prevent pressure regulation too much, so a Pressure gauge 5 can be arranged at liquid outlet channel, to monitor the pressure of liquid outlet at any time.
The volume of general filter 1 is larger, so when putting filter in a pre-installation, filter 1 is generally keep motionless, affects the installation of fore filter, so can arrange articulation respectively at the two ends of jockey 2 to prevent filter 1 scope of activities too large.Articulation comprises joint 6 and nut 7.Concrete, joint 6 between liquid pipe and jockey 2 for being connected with liquid gas thread.The outside that the outside of one end of joint 6 has a screw thread other end has the first flange part of circular ring type, one end with the first flange part of joint 6 and the liquid interface tube of jockey 2 offset and are placed with gasket seal between the two, the one end of nut 7 in tubular type to be enclosed within liquid interface tube and to be threaded with liquid interface tube, the inner side of the other end of nut 7 has the second flange part of annular, and the second flange part is placed on the side away from described liquid interface tube of the first flange part and offsets with described first flange part.
In this description, each embodiment adopts the mode of going forward one by one to describe, and what each embodiment stressed is the difference with other embodiments, between each embodiment identical similar portion mutually see.
To the above-mentioned explanation of the disclosed embodiments, professional and technical personnel in the field are realized or uses the utility model.To be apparent for those skilled in the art to the multiple amendment of these embodiments, General Principle as defined herein when not departing from spirit or scope of the present utility model, can realize in other embodiments.Therefore, the utility model can not be restricted to these embodiments shown in this article, but will meet the widest scope consistent with principle disclosed herein and features of novelty.
Claims (14)
1. a fore filter, comprise filter (1), described filter (1) comprises cylindrical shell (11) and skeleton filter screen (12), described cylindrical shell (11) has the filter cavity of accommodating described skeleton filter screen (12) and has the first feed pathway with described filter cavity UNICOM, it is characterized in that
Described skeleton filter screen (12) is in cartridge type and the predetermined stroke had in described filter cavity vertically, described skeleton filter screen (12) lateral wall has the upper isolating ring (123) of the backwash net (122) being divided into screen pack (121) and be positioned at described screen pack (121) top, the bottom lock of described screen pack (121);
At the high point of described predetermined stroke, described upper isolating ring (123) is fitted with the top of described first feed pathway thus described first feed pathway is only communicated with described screen pack (121); At the low spot of described predetermined stroke, described upper isolating ring (123) is fitted with the bottom of described first feed pathway thus is entered fluid passage by described first and is only communicated with described backwash net (122);
Described filter cavity is connected with the first liquid outlet channel in the side of described backwash net (122), is connected with drain outlet in the side of described screen pack (121); Described drain outlet place is provided with switch valve.
2. fore filter according to claim 1, is characterized in that,
Also comprise elastic component, described elastic component is connected between described skeleton filter screen (12) and described cylindrical shell (11) and to the height point of described predetermined stroke and applies elastic force to described skeleton filter screen (12);
The lateral wall of the bottom of described screen pack (121) has lower isolating ring (124), at the high point of described predetermined stroke, the inwall of the lateral wall of described lower isolating ring (124) and the import of described drain outlet is fitted to be separated in described drain outlet and described filter cavity; At the low spot of described predetermined stroke, between the lateral wall of described lower isolating ring (124) and the inwall of the import of described drain outlet, there is space to be communicated with described filter cavity described drain outlet;
During the valve closing of described switch valve, described skeleton filter screen (12) can be positioned at the high point of described predetermined stroke under the resilient force of described elastic component; During described valve open, described skeleton filter screen (12) can be positioned at the low spot of described predetermined stroke under the bottom external and internal pressure difference of described skeleton filter screen (12).
3. fore filter according to claim 2, it is characterized in that, described elastic component is Compress Spring (13), it is upper and be positioned at described upper isolating ring (123) below that described Compress Spring (13) is enclosed within described skeleton filter screen (12), and the offset other end and described cylindrical shell (11) of one end of described Compress Spring (13) and the lower surface of described upper isolating ring (123) offsets.
4. fore filter according to claim 3, it is characterized in that, the inside of described cylindrical shell (11) has cylindrical bore, also comprise back-up ring (15) and lower back-up ring (16), described cylindrical bore is divided into described first feed pathway, described filter cavity and described drain outlet by described upper back-up ring (15) and described lower back-up ring (16).
5. fore filter according to claim 1, it is characterized in that, also comprise and place the inner recoil part (14) in cartridge type of described screen pack (121), the mouth end of described recoil part (14) has impeller and the medial surface of the lateral surface of the mouth end of described recoil part (14) and the mouth end of described screen pack (121) is fitted, the side of described recoil part (14) is provided with delivery port, the bottom of described recoil part (14) and the bottom connection of described screen pack (121) touch, and described recoil part (14) can be rotated in described screen pack (121).
6. fore filter according to claim 5, is characterized in that, the bottom of described screen pack (121) has the lug boss of spherical, and the bottom of described recoil part (14) has the groove of the spherical offseted with described lug boss.
7. fore filter according to claim 1, it is characterized in that, comprise shaft-like jockey (2), described jockey (2) has the second feed pathway and the second liquid outlet channel, upper cover (3) is provided with between described jockey (2) and described filter (1), described upper cover (3) has described first feed pathway of connection and also has with the 3rd feed pathway of described second feed pathway the 3rd liquid outlet channel being communicated with described first liquid outlet channel and described second liquid outlet channel, described upper cover (3) is connected by least four removable connectors with described jockey (2), the liquid outlet of described second feed pathway and the inlet of described second liquid outlet channel are placed and the liquid outlet of described second feed pathway in the same direction, the inlet of described second liquid outlet channel and the projection of the tie point of all described connectors in the plane in vertical described direction have two line of symmetries, and the liquid outlet of the second feed pathway towards the axis being parallel with skeleton filter screen (12).
8. fore filter according to claim 7, it is characterized in that, the inlet of described second liquid outlet channel is rounded, the liquid outlet of described second feed pathway is circular ring type and is enclosed within the outside of the inlet of described liquid outlet channel, and the liquid outlet of the inlet of described second liquid outlet channel and described second feed pathway is coaxially placed.
9. fore filter according to claim 8, it is characterized in that, have in foursquare connected unit in the outside of the liquid outlet of described second feed pathway, the corner of described connected unit there are four holes passed for screw and described connected unit with the axis being parallel of described filter (1).
10. fore filter according to claim 7, is characterized in that, has sealing gasket between the liquid outlet of described second feed pathway and the inlet of described 3rd feed pathway.
11. fore filters according to claim 7, it is characterized in that, the outward flange of the end of the inlet of described second liquid outlet channel has the first protruding pipe, the inward flange of the end of the liquid outlet of described 3rd liquid outlet channel has the second protruding pipe, described first protruding pipe is enclosed within outside described second protruding pipe, and is placed with sealing ring between described second protruding pipe and described first protruding pipe.
12. fore filters according to any one of claim 1-11, is characterized in that, be also included in pressure regulator valve (4) and/or Pressure gauge (5) that the liquid outlet channel of described fore filter is arranged.
13. fore filters according to any one of claim 1-11, it is characterized in that, the inlet end of described first liquid outlet channel has endoporus, outside and the described endoporus of the upper end of described backwash net (122) are slidably matched, and between described endoporus and described backwash net (122), there is sealing ring, the outside of the upper end of described backwash net (122) has the groove placing described sealing ring.
14. fore filters according to any one of claim 7-11, it is characterized in that, the two ends of described jockey (2) all have articulation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420816009.5U CN204395605U (en) | 2014-12-19 | 2014-12-19 | Fore filter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420816009.5U CN204395605U (en) | 2014-12-19 | 2014-12-19 | Fore filter |
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| Publication Number | Publication Date |
|---|---|
| CN204395605U true CN204395605U (en) | 2015-06-17 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
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| CN201420816009.5U Active CN204395605U (en) | 2014-12-19 | 2014-12-19 | Fore filter |
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| Country | Link |
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| CN (1) | CN204395605U (en) |
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| CN106139666A (en) * | 2016-08-03 | 2016-11-23 | 厦门建霖工业有限公司 | Double-layer leaching net fore filter and method of work thereof |
| CN106178669A (en) * | 2016-07-25 | 2016-12-07 | 玉环美尔斯铜业有限公司 | A kind of fore filter |
| CN106745384A (en) * | 2016-12-21 | 2017-05-31 | 无锡市凡宇水处理机械制造有限公司 | Swimming pool and pump works private filter |
| CN107551646A (en) * | 2017-10-19 | 2018-01-09 | 陈英傲 | Anti-leakage type intelligence backwash filter and control method |
| CN107961576A (en) * | 2017-12-26 | 2018-04-27 | 浙江裕腾百诺环保科技有限公司 | A kind of prefilter back purge system and method |
| CN109072839A (en) * | 2016-04-22 | 2018-12-21 | 卡特彼勒公司 | The fuel inlet filter of fuel injector |
| CN110104707A (en) * | 2019-06-11 | 2019-08-09 | 汉高(天津)技术有限公司 | Magnetic-suspension high-speed spins fore filter |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109072839A (en) * | 2016-04-22 | 2018-12-21 | 卡特彼勒公司 | The fuel inlet filter of fuel injector |
| CN109072839B (en) * | 2016-04-22 | 2021-02-23 | 卡特彼勒公司 | Fuel inlet filter for fuel injector |
| CN106178669A (en) * | 2016-07-25 | 2016-12-07 | 玉环美尔斯铜业有限公司 | A kind of fore filter |
| CN106139666A (en) * | 2016-08-03 | 2016-11-23 | 厦门建霖工业有限公司 | Double-layer leaching net fore filter and method of work thereof |
| CN106139666B (en) * | 2016-08-03 | 2018-11-23 | 厦门百霖净水科技有限公司 | Double-layer leaching net fore filter and its working method |
| CN106745384A (en) * | 2016-12-21 | 2017-05-31 | 无锡市凡宇水处理机械制造有限公司 | Swimming pool and pump works private filter |
| CN107551646A (en) * | 2017-10-19 | 2018-01-09 | 陈英傲 | Anti-leakage type intelligence backwash filter and control method |
| CN107961576A (en) * | 2017-12-26 | 2018-04-27 | 浙江裕腾百诺环保科技有限公司 | A kind of prefilter back purge system and method |
| CN107961576B (en) * | 2017-12-26 | 2023-04-14 | 浙江裕腾百诺环保科技有限公司 | Front-mounted filtering backwashing device and method |
| CN110104707A (en) * | 2019-06-11 | 2019-08-09 | 汉高(天津)技术有限公司 | Magnetic-suspension high-speed spins fore filter |
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