CN206793200U

CN206793200U - Fore filter

Info

Publication number: CN206793200U
Application number: CN201720526683.3U
Authority: CN
Inventors: 吕仁木
Original assignee: Individual
Current assignee: Individual
Priority date: 2017-05-11
Filing date: 2017-05-11
Publication date: 2017-12-26
Anticipated expiration: 2027-05-11

Abstract

The utility model provides a kind of fore filter, belongs to field of mechanical technique.It solves the problems, such as that existing fore filter is high to installation environment requirement.It includes the body that lower end has sewage draining exit, filter core is provided with body, the cleaning rod with inner chamber is provided with filter core, blowoff valve is provided with the sewage draining exit of body, the rotational sleeve that can be rotated relative to body is equipped with the sewage draining exit of body, the lower end of cleaning rod is through filter core and inserts in the upper end of rotational sleeve, cleaning rod forms the intracavity inter-connection of circumferentially fixed and cleaning rod inner chamber and rotational sleeve with rotational sleeve, and the water inlet end of blowoff valve is connected with the lower end of rotational sleeve and blowoff valve can drive rotational sleeve to rotate.It has the advantages that low to installation environment requirement, applicability is wide.

Description

Fore filter

Technical field

The utility model belongs to field of mechanical technique, is related to a kind of filter, more particularly to a kind of fore filter.

Background technology

With the progress and the improvement of people's living standards of science and technology, people start to using water and diet in daily life Health has higher requirement.At present, increasing people starts using a kind of fore filter to carrying out primary purification with water, To be filtered to impurity in pipe network etc..The operation principle of fore filter is generally：Running water is before water inlet is linked into Put in the housing of filter, flowed out for users to use from delivery port again after the filter element filtering in housing.This is fore filter Normal operating conditions, but many impurity and jelly, impurity and jelly can be remained on filter core in use for some time Typically it is difficult to clean up, is all to connect blowoff valve, it is necessary to open blowoff valve when clearing up in the housing lower end of fore filter at present, makes The blow-off pipe of blowdown connects with water inlet, running water is flowed through from water inlet, by be will be attached to during cartridge surface on filter core Impurity develop and be discharged to by blowoff valve in blow-off pipe.

It is only simple using cartridge surface is run water through however, for the jelly being bonded on filter core, often because Not enough lead to not effectively clear up jelly from filter core for flow intensity.In order to solve this problem, China Patent was once disclosed a kind of fore filter [application number：201520252203.X], it includes being connected water with exterior line Connecting portion and the filter house communicated with connecting portion, filter house bottom are provided with the ball valve of draining, and filter house includes the screen pack of tubular, Inside screen pack along its it is axially arranged have a siphon type flusher, siphon type flusher is included along the axially arranged length of screen pack The sewage discharge tube of strip, drain outlet is additionally provided with inside siphon type flusher, sewage discharge tube connects with drain outlet, drain outlet end End connects with ball valve.Drain outlet in the sewage discharge tube and device of strip collectively forms siphon pipe, and sewage discharge tube is close to filtering Net, produce siphon type flusher when rinsing and rotate and negative pressure is produced whereby at sewage discharge tube, produced by siphonage Suction the impurity on filter screen is continuously drawn into blow-off pipe in a steady stream, realize the convenient cleaning of impurity on filter screen.

Above-mentioned fore filter although can solve the problem that cleaning jelly the problem of, but it there is also some shortcomings it Place：Siphon type flusher is to control rotation by people are manually operated, particular by the top of siphon type flusher End sets more rib joints, and be connected knob on more rib joints, and user drives hydrocone type to rinse by turning knob can Device rotates.This mode can cause the upper end of fore filter elongated, so that requirement of the fore filter to installation environment Increase, when fore filter especially being arranged on into some concealed locations such as corner or table top bottom, easily because preposition mistake The upper end of filter is elongated and produces interference with metope or table top bottom, has influence on the normal mounting of fore filter.

The content of the invention

The purpose of this utility model is in view of the above-mentioned problems existing in the prior art, it is proposed that a kind of fore filter, institute Technical problems to be solved are the requirements for how reducing fore filter to installation environment.

The purpose of this utility model can be realized by following technical proposal：

Fore filter, including lower end have the body of sewage draining exit, filter core are provided with body, being provided with filter core has inner chamber Cleaning rod, be provided with blowoff valve at the sewage draining exit of described body, it is characterised in that be equipped with the sewage draining exit of described body The rotational sleeve that can be rotated relative to body, the lower end of cleaning rod through filter core and are inserted in the upper end of rotational sleeve, cleaned Rod and rotational sleeve form the intracavity inter-connection of circumferentially fixed and cleaning rod inner chamber and rotational sleeve, the water inlet end of blowoff valve with The lower end of rotational sleeve is connected and blowoff valve can drive rotational sleeve to rotate.

It is located in due to rotational sleeve in the sewage draining exit of body and forms axial limiting with body, then also means that rotation Sleeve can rotate relative to body, and the water inlet end of blowoff valve is connected with the lower end of rotational sleeve and can band turn Moving sleeve together rotates, and in the upper end of cleaning rod lower end insertion rotational sleeve and with rotational sleeve is circumferentially fixed means to clean Rod and rotational sleeve can synchronization action, so, when user rotates blowoff valve, can is driven by rotational sleeve Cleaning rod is together rotated to complete to rinse.

This fore filter is made blowoff valve and cleaning rod formation connection and is made blowoff valve formation can phase using rotational sleeve The state rotated for body, reach and rotated the purpose that blowoff valve can drive cleaning rod to rotate, that is, by this Structure has also reached the purpose that rotate manually cleaning rod, and eliminates and be used to drive what cleaning rod rotated in the prior art The setting of top knob, so that the upper end of fore filter will not be elongated because the structure of rotation is set again.And turn Moving sleeve is provided in sewage draining exit, and such blowoff valve will not also make the lower end of body elongated substantially after being connected with rotational sleeve, Or even if there is the elongated situation in body lower end, because the lower end of body is connected with blow-off pipe, it can also pass through row The normal mounting of fore filter is realized in the flexural deformation of dirty pipe, thus also just reduces fore filter to installation environment It is required that.

In above-mentioned fore filter, the lower end of described cleaning rod has the connecting portion of protrusion, and connecting portion is provided with With the connecting hole of the intracavity inter-connection of cleaning rod, described rotational sleeve upper end has non-circular positioning hole, described company The lower end shape of socket part is identical with the shape of positioning hole, in described connecting portion insertion positioning hole.

The inner chamber of cleaning rod is connected by connecting hole with rotational sleeve, and it is non-circular fixed to be set in rotational sleeve upper end Position hole, and the lower end of the connecting portion of cleaning rod is shaped to, lower end so when connecting portion identical with the shape of positioning hole It can just make to be formed between cleaning rod and rotational sleeve circumferentially fixed when in insertion positioning hole, then pass through the water inlet of blowoff valve again End is threadedly coupled can with the lower end of rotational sleeve and realizes the purpose for rotating blowoff valve to drive cleaning rod together to rotate.Pass through Connecting portion, which is inserted into be formed in positioning hole, to be coordinated, and this fore filter is smoothly realized that the structure that cleaning rod rotates moves to The lower end of body, to shorten the upper end length of fore filter, to reduce requirement of the fore filter to installation environment.

In above-mentioned fore filter, there is cyclic convex edge, described filter core on the outside of the upper end of described rotational sleeve In the tubular of upper end open, and in filter core bottom there is annular to protrude, for described cyclic convex edge in annular protrusion, ring-type is convex The lower surface on edge is resisted against body on the inwall at sewage draining exit upper port.

Rotational sleeve is located in the sewage draining exit of body, and sewage draining exit is positioned at the lower end of body, in order to avoid turning set again Cylinder drops out out of sewage draining exit and has influence on the rotational stability of rotational sleeve, therefore sets ring-type on the outside of the upper end of rotational sleeve Convex edge, it is resisted against by the lower surface of cyclic convex edge on the inwall of body to make rotational sleeve spacing in sewage draining exit, turning set The lower end that the axial direction of cylinder can make rotational structure smoothly move to body after being limited.Meanwhile annular is set in the bottom of filter core Protrusion, cyclic convex edge positioned at annular protrusion in, again can the motion upward to rotational sleeve limit.

In above-mentioned fore filter, the upper end inner circumferential side of described filter core is connected with cross baffle plate, described The lower surface of baffle plate be slightly above the upper surface of cleaning rod.

It is separated in order to avoid cleaning rod is floated by the buoyancy of water and with rotational sleeve, therefore in the upper end of filter core Inner circumferential side connection is in cross baffle plate, and the lower surface of baffle plate is slightly above the upper surface of cleaning rod, then when cleaning rod is in water The upper surface of cleaning rod can lean with the lower surface of baffle plate during buoyancy float downward, so that cleaning rod will not be further continued for It is floating, to prevent cleaning rod lower end and rotational sleeve from completely disengaging.

In above-mentioned fore filter, as another technical solution, there is the top of protrusion in described inner body wall Bar, the lower end of described push rod are resisted against on the upper surface of cleaning rod.

Using said structure, the function of preventing that cleaning rod lower end from completely disengaging with rotational sleeve can also be equally realized.

There is the soil pick-up portion of at least two protrusions, each soil pick-up in above-mentioned fore filter, on the outside of described cleaning rod Along some sewage discharge tubes that are axially arranged with of cleaning rod in portion, and each sewage discharge tube in one of soil pick-up portion is along cleaning rod axial direction Mutually stagger with position of each sewage discharge tube in remaining soil pick-up portion along cleaning rod axial direction position.

Because filter core is tubular, by setting the soil pick-up portion of some protrusions on the outside of cleaning rod, and will in processing Position of each sewage discharge tube along cleaning rod axial direction in one of soil pick-up portion is arranged to and each sewage discharge tube edge in remaining soil pick-up portion The position of cleaning rod axial direction is mutually staggered, in such event equivalent to making each sewage discharge tube face relative with filter core not phases when rotating Together, this is also implied that when cleaning rod rotates by each sewage discharge tube as cleaning rod rotates that the whole inwall of filter core can be entered Row soil pick-up, soil pick-up area reach maximum, acquired soil pick-up best results.

Compared with prior art, this fore filter sets rotational sleeve, blowoff valve and rotational sleeve spiral shell in sewage draining exit Line is connected to make blowoff valve form the rotation that can be rotated relative to ontological idea of freedom, and cleaning rod is circumferentially fixed clear to make with rotational sleeve Rod is washed as rotational sleeve together rotates, so as to form the structure for rotating blowoff valve and cleaning rod being driven together to rotate, without It is the rotation that cleaning rod can be achieved that knob is set at top, that is, by the structure for driving cleaning rod rotation to before moving to Put at the lower end of filter, eliminate the setting of top knob, so that the upper end of fore filter will not turn because setting again The structure employed and it is elongated, thus just reduce requirement of the fore filter to installation environment.

Brief description of the drawings

Fig. 1 is the schematic diagram of this fore filter.

Fig. 2 is sectional view when this fore filter rinses.

Fig. 3 is the exploded view between cleaning rod in this fore filter, rotational sleeve and blowoff valve.

Fig. 4 is the schematic diagram of body in this fore filter.

In figure, 1, body；1a, housing；1a, sewage draining exit；1b, top cover；1b1, water inlet；1b2, delivery port；2nd, filter core； 2a, apopore；2b, annular protrusion；3rd, tubular screen pack；4th, cleaning rod；4a, soil pick-up portion；4a1, sewage discharge tube；4b, connecting portion； 4b1, connecting hole；5th, rotational sleeve；5a, positioning hole；5b, cyclic convex edge；6th, blowoff valve；7th, sealing ring；8th, baffle plate.

Embodiment

It is specific embodiment of the utility model and with reference to accompanying drawing below, the technical solution of the utility model is made into one The description of step, but the utility model is not limited to these embodiments.

As shown in Figure 1, Figure 2 and Figure 4, fore filter, including the body 1 being made up of housing 1a and top cover 1b, housing 1a upper end opens and top cover 1b are connected to housing 1a upper ends, and housing 1a inner chamber is sky, has water inlet 1b1 on top cover 1b and goes out Mouth of a river 1b2, water inlet 1b1 and delivery port the 1b2 intracavity inter-connection with housing 1a respectively.Filter core 2, housing 1a are provided with housing 1a Lower end there is sewage draining exit 1a1 with housing 1a intracavity inter-connection, and blowoff valve 6 is connected with sewage draining exit 1a1, used When, water inlet 1b1 taps into water pipe, delivery port 1b2 connected water outlet pipes, and blowoff valve 6 connects blow-off pipe.

As shown in Fig. 2 filter core 2 is cylindrical, and is arranged with tubular screen pack 3 outside filter core 2, the upper end open of filter core 2, Top cover 1b inner side has a ring-type shoulder block, and ring-type shoulder block is resisted against the upper end of filter core 2, the upper end of ring-type shoulder block and filter core 2 it Between be provided with sealing ring 7, top cover 1b water inlet 1b1 and the intracavity inter-connection of filter core 2.If the sidepiece of filter core 2 is circumferentially arranged with doing Water hole 2a, housing 1a inner chamber are connected with the inner chamber of filter core 2 by apopore 2a, and sewage draining exit 1a1 is located at the underface of filter core 2, Sealing ring 7 is provided between the lower end outside of filter core 2 and housing 1a inwall.Cleaning rod 4 is provided with filter core 2, cleaning rod 4 is in hollow Shape, the upper end closed of cleaning rod 4, axial direction of the sidepiece of cleaning rod 4 along cleaning rod 4 provide and the intracavity inter-connection of cleaning rod 4 Sewage discharge tube 4a1, each sewage discharge tube 4a1 are in thin strip.

The outside of cleaning rod 4 has the soil pick-up portion 4a of at least two protrusions, and sewage discharge tube is provided with each soil pick-up portion 4a 4a1, and positions of each sewage discharge tube 4a1 on one of soil pick-up portion 4a along the axial direction of cleaning rod 4 with it is each on remaining soil pick-up portion 4a Sewage discharge tube 4a1 mutually staggers the position along the axial direction of cleaning rod 4.Each sewage discharge tube 4a1 on one of soil pick-up portion 4a is along cleaning rod 4 The position of axial direction is arranged to mutually stagger with positions of each sewage discharge tube 4a1 on remaining soil pick-up portion 4a along the axial direction of cleaning rod 4, so One come equivalent to making each sewage discharge tube 4a1 the face relative with filter core 2 be different from when rotating, this is also implied that in cleaning rod 4 Soil pick-up can be carried out to the whole inwall of filter core 2 as cleaning rod 4 rotates by each sewage discharge tube 4a1 during rotation, soil pick-up area reaches To maximum, acquired soil pick-up best results.

As shown in Figures 2 and 3, housing 1a lower ends are connected with rotational sleeve 5, have ring-type on the outside of the upper end of rotational sleeve 5 Convex edge 5b, cyclic convex edge 5b lower surface are resisted against housing 1a inner chambers on the bottom wall at sewage draining exit 1a1 upper ports, rotational sleeve 5 are located in sewage draining exit 1a1 and can be rotated relative to sewage draining exit 1a1, and the bottom of filter core 2 has annular protrusion 2b, cyclic convex edge 5b is in annular protrusion 2b.At the bottom centre of cleaning rod 4 there is downwardly projecting connecting portion 4b, connecting portion 4b to pass through filter core 2 bottoms are simultaneously inserted in the upper end of rotational sleeve 5, and connecting portion 4b and rotational sleeve 5 are circumferentially fixed, the company of offering on connecting portion 4b Meet hole 4b1, connecting hole 4b1 is by the water inlet end of blowoff valve 6 and the intracavity inter-connection of cleaning rod 4.

As shown in figure 3, in the present embodiment, the upper end of rotational sleeve 5 has the positioning hole 5a in non-circular shape, cleaning rod The shape of 4 connecting portion 4b lower ends is identical with positioning hole 5a shape, the water inlet end of blowoff valve 6 and the lower end phase of rotational sleeve 5 Connect and blowoff valve 6 can drive rotational sleeve 5 to rotate.In the present embodiment, positioning hole 5a is hexagonal hole；Rotational sleeve 5 Lower end be screwed hole, the water inlet end of blowoff valve 6 is threadedly coupled with the lower end of rotational sleeve 5.Certainly, in addition to threaded connection, The mode such as welding or glue bonding can also be used to be connected the water inlet end of blowoff valve 6 with the lower end of turning set energy 5.

Because cleaning rod 4 and rotational sleeve 5 are circumferentially fixed, the water inlet end of blowoff valve 6 connects with the lower end screw thread of rotational sleeve 5 Connect, blowoff valve 6 and cleaning rod 4 link together equivalent to using rotational sleeve 5, simultaneously because the row of being located in of rotational sleeve 5 In dirty mouth 1a1, then when user rotates blowoff valve 6, by rotational sleeve 5 cleaning rod 4 can be driven together to rotate.

In normal filtration, blowoff valve 6 is closed this fore filter.Upper end and top cover 1b due to filter core 2 Between be provided with sealing ring 7, therefore be can only enter by the water accessed of the water inlet 1b1 on top cover 1b in filter core 2.Then water passes through Apopore 2a on filter core 2 and the tubular screen pack 3 being set in outside filter core 2 are filtered and enter housing 1a inner chamber In, due to being provided with sealing ring 7 between the lower end outside of filter core 2 and housing 1a inwall so that enter in housing 1a inner chamber Water finally can only flow outwardly to come for users to use from the delivery port 1b2 on top cover 1b.

When working the long period and cause to be attached with more impurity and jelly on filter core 2 and screen pack, it is necessary to beat Drive blowoff valve 6 to be rinsed filter core 2 and screen pack, to prevent filter effect to be affected.The detailed process of flushing process is It is such：User open blowoff valve 6, blow-off pipe is connected with the connecting hole 4b1 on connecting portion 4b, thus make blow-off pipe with clearly The intracavity inter-connection of rod 4 is washed, then user rotates blowoff valve 6 to drive the cleaning rod 4 in filter core 2 together to turn by hand It is dynamic.Because the sidepiece of cleaning rod 4 has provided some sewage discharge tube 4a1 vertically, then each soil pick-up during cleaning rod 4 rotates Mouthful 4a1 is as cleaning rod 4 rotates, and because each sewage discharge tube 4a1 is in thin strip, such cleaning rod 4 is in rotation During will be respectively formed suction at each sewage discharge tube 4a1 so that the impurity and glue that are attached on filter core 2 and screen pack Thing is drawn into cleaning rod 4 by sewage discharge tube 4a1, and is ultimately discharged into blow-off pipe.

Rinse bars and blowoff valve 6 are linked together using rotational sleeve 5 and form blowoff valve 6 by this fore filter can The state rotated relative to body 1, makes user directly by rotating blowoff valve 6 cleaning rod 4 can be driven together to rotate to complete Flushing work, that is, by be arranged in the prior art at the top of fore filter for the knot that drives cleaning rod 4 to rotate Structure eliminates setting for the top knob that is used for driving cleaning rod 4 to rotate in the prior art to being moved at the lower end of fore filter Put, so that the upper end of fore filter will not be elongated because the structure of rotation is set again.Although and such structure meeting The lower end of fore filter is set to become longer, but for the installation environments such as table top bottom, the lower end of fore filter is elongated Normal mounting is not interfered with, thus just reduces requirement of the fore filter to installation environment yet.

It is separated in order to avoid cleaning rod 4 is floated by the buoyancy of water and with rotational sleeve 5, therefore in the upper of filter core 2 The inner circumferential side connection at end is in cross baffle plate 8, and ensures that the lower surface of baffle plate 8 is slightly above the upper surface of cleaning rod 4, then when The upper surface of cleaning rod 4 in the buoyancy float downward of water of cleaning rod 4 can lean with the lower surface of baffle plate 8, so that clearly Washing rod 4 will not be further continued for floating, to prevent the lower end of cleaning rod 4 from being completely disengaged with rotational sleeve 5.

In addition to aforesaid way, downwardly projecting push rod can also be set on top cover 1b inwalls, support the lower end of push rod On the upper surface for leaning against cleaning rod 4, in this way, can also equally realize prevents that the lower end of cleaning rod 4 and rotational sleeve 5 are complete The function of total detachment.

Specific embodiment described herein is only to the utility model spirit explanation for example.The utility model institute Category those skilled in the art can make various modifications or supplement to described specific embodiment or using similar Mode substitute, but without departing from spirit of the present utility model or surmount scope defined in appended claims.

Claims

1. fore filter, including lower end have sewage draining exit (1a1) body (1), filter core (2), filter core are provided with body (1) (2) cleaning rod (4) with inner chamber is provided with, sewage draining exit (1a1) place of described body (1) is provided with blowoff valve (6), its feature It is, the rotational sleeve (5) that can be rotated relative to body (1) is equipped with the sewage draining exit (1a1) of described body (1), clearly The lower end of rod (4) is washed through filter core (2) and is inserted in the upper end of rotational sleeve (5), cleaning rod (4) and rotational sleeve (5) formation The inner chamber of circumferentially fixed and cleaning rod (4) and the intracavity inter-connection of rotational sleeve (5), the water inlet end and turning set of blowoff valve (6) The lower end of cylinder (5) is connected and blowoff valve (6) can drive rotational sleeve (5) to rotate.

2. fore filter according to claim 1, it is characterised in that the lower end of described cleaning rod (4) has protrusion Connecting portion (4b), connecting portion (4b) is provided with connecting hole (4b1) with the intracavity inter-connection of cleaning rod (4), described rotation Sleeve (5) upper end has non-circular positioning hole (5a), lower end shape and the positioning hole (5a) of described connecting portion (4b) Shape is identical, in described connecting portion (4b) insertion positioning hole (5a).

3. fore filter according to claim 2, it is characterised in that have on the outside of the upper end of described rotational sleeve (5) There is cyclic convex edge (5b), described filter core (2) is in the tubular of upper end open, and in the bottom of filter core (2) there is annular to protrude (2b), in annular protrusion (2b), the lower surface of cyclic convex edge (5b) is resisted against body (1) and existed described cyclic convex edge (5b) On inwall at sewage draining exit (1a1) upper port.

4. fore filter according to claim 3, it is characterised in that the upper end inner circumferential side connection of described filter core (2) It is in cross baffle plate (8) to have, and the lower surface of described baffle plate (8) is slightly above the upper surface of cleaning rod (4).

5. fore filter according to claim 3, it is characterised in that there is protrusion on described body (1) inwall Push rod, the lower end of described push rod are resisted against on the upper surface of cleaning rod (4).

6. according to the fore filter described in claim 1 or 2 or 3 or 4 or 5, it is characterised in that described cleaning rod (4) is outside Side has the soil pick-up portion (4a) of at least two protrusions, is axially arranged with some soil pick-ups along cleaning rod (4) on each soil pick-up portion (4a) Mouth (4a1), and position and remaining soil pick-up of each sewage discharge tube (4a1) in one of soil pick-up portion (4a) along cleaning rod (4) axial direction Mutually stagger position of each sewage discharge tube (4a1) along cleaning rod (4) axial direction in portion (4a).