CN107754420B - Novel pre-filter - Google Patents
Novel pre-filter Download PDFInfo
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- CN107754420B CN107754420B CN201710883278.1A CN201710883278A CN107754420B CN 107754420 B CN107754420 B CN 107754420B CN 201710883278 A CN201710883278 A CN 201710883278A CN 107754420 B CN107754420 B CN 107754420B
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Abstract
The invention discloses a novel pre-filter, which comprises an upper cover, a drain ball valve, a bottle body and a lower cover, wherein the top of the bottle body is detachably connected with the upper cover, an outer framework is arranged in an inner cavity of the bottle body, a filter screen framework for installing a filter screen is arranged in the outer framework, a net cover is fixedly clamped at the top of the inner cavity of the bottle body, a small framework is arranged in the net cover, the lower end of the small framework is clamped with the filter screen framework, a back flushing net is arranged outside the small framework, a sealing element is clamped at the bottom of the bottle body, and the lower cover is circumferentially rotatably arranged between the drain ball valve and the bottle body. The novel pre-filter provided by the invention has the advantages that the forward and backward flushing functions can be realized only by twisting the lower cover, the operation is simple, and as the filter screen assembly is sealed by adopting the sealing assembly when in each working state, unfiltered tap water can only flow through the filter screen assembly and be discharged from the water outlet, and the filtering effect is effectively improved.
Description
Technical Field
The invention relates to the technical field of purifying equipment, in particular to a novel pre-filter.
Background
The pre-filter is a first coarse filtering device for the whole house water, and can filter sediment, rust and large particulate matters in tap water. The water meter is usually arranged behind a water inlet pipeline water meter so as to ensure that a large amount of precipitated impurities generated in a pipe network can not cause harm to human bodies and play a positive protection role on concealed pipelines, water taps, electric appliances and the like.
Three pre-filters are respectively a positive washing pre-filter, a siphon pre-filter and a back washing pre-filter in the current market, wherein the positive washing pre-filter has high washing flow and good washing effect on large-particle dirt, but only the surface of a filter screen is washed by water flow, and the effect is poor and difficult to wash off on dirt adhered to the filter screen; the siphon pre-filter has better pollution discharge effect on the strong attached dirt on the filter screen, but the dirt suction port is required to be very close to the filter screen, otherwise, the negative pressure suction force is weaker and the effect is not good. When the distance is relatively short, large-particle dirt is difficult to enter the sewage disposal channel, so that the large-particle dirt is easy to deposit in the filter bottle body and cannot be discharged; the back flushing pre-filter utilizes water flow to flush from the inside of the filter screen to the outside, and has better pollution discharge effect on the strong attached dirt on the filter screen. But the water flow is smaller during back flushing, and the flushing effect on large-particle dirt is not as rapid as that of the normal front flushing.
Therefore, how to improve the filtering effect of the pre-filter is a technical problem to be solved by the person skilled in the art.
Disclosure of Invention
The invention aims to provide a novel pre-filter which is simple to operate, can realize the positive and back flushing functions and effectively improves the filtering effect.
In order to solve the technical problems, the invention provides a novel pre-filter, which comprises an upper cover and a drain ball valve, wherein a water inlet and a water outlet are formed in the upper cover, the novel pre-filter further comprises a bottle body and a lower cover, the top of the bottle body is detachably connected with the upper cover, an outer framework is arranged in an inner cavity of the bottle body, an outer framework O-shaped ring is arranged on the outer framework, a filter screen framework for installing a filter screen is arranged in the outer framework, a framework large O-shaped ring for sealing the filter screen framework and the outer framework during back flushing is arranged at the upper end of the filter screen framework, a sealing pad for sealing the filter screen framework and the sealing pad during filtering and positive flushing is also arranged at the upper end of the filter screen framework, a small framework is arranged in the inner side of the net cover, a sealing piece is arranged at the bottom of the bottle body, the drain ball valve is arranged at the bottom end of the outer framework, the drain ball valve is arranged at the bottom end of the drain framework for sealing the drain ball valve, the drain ball valve is arranged at the bottom end of the filter screen framework, and the drain framework is in a sealing way, and the sealing piece is arranged at the bottom of the outer framework, and is in a sealing way of the outer framework, and is in a rotary way, and the sealing piece is arranged at the bottom of the outer framework and is in a sealing way, and is in a sealing groove of the sealing cover.
Preferably, the inside cross muscle that is provided with of little skeleton, just be provided with the spring on the cross muscle, the other end of spring with the net lid butt, little skeleton bottom be provided with the fixed buckle of filter screen skeleton joint.
Preferably, the filter screen skeleton lower extreme is provided with inclined plane, facet and spacing, the inclined plane the facet with spacing formation spiral drive portion, drive portion with the muscle butt of outer skeleton, still be provided with on the filter screen skeleton upper end lateral wall and be used for installing the slot of outer skeleton O type circle, filter screen skeleton upper end is provided with spacing buckle, filter screen skeleton upper end still is provided with and is used for installing the recess of sealed pad.
Preferably, the net cover is provided with a limiting rib for being clamped with the notch of the bottle body, the net cover is further provided with a limiting piece matched with the limiting buckle, and the net cover is further provided with a limiting cross rib for limiting the spring.
Preferably, a gear matched with the ring teeth of the sealing element is arranged on the outer framework so as to realize synchronous rotation of the outer framework and the lower cover.
Preferably, a through hole for sewage discharge is formed in the bottom of the outer framework, and the through hole is communicated with the sewage discharge channel of the water discharge ball valve.
Preferably, the top end and the bottom end of the filter screen are both provided with filter screen O-shaped rings.
Preferably, a net cover O-shaped ring is arranged between the net cover and the upper cover.
Preferably, an O-shaped ring and a small net sealing O-shaped ring are arranged between the small framework and the back flushing net, and a small framework O-shaped ring is arranged at the top end of the small framework.
Preferably, the device further comprises a silica gel scraping strip axially arranged on the side wall of the outer framework, a first scraping blade used for contacting with the outer surface of the filter screen when the outer framework rotates is arranged on one side of the silica gel scraping strip, and a second scraping blade used for contacting with the inner surface of the bottle body when the outer framework rotates is arranged on the other side of the silica gel scraping strip.
The invention provides a novel pre-filter, which mainly comprises an upper cover, a bottle body, a lower cover and a drain ball valve. Wherein, the upper cover is provided with a water inlet and a water outlet; the bottle detachably sets up in upper cover mounted position, the inner chamber of bottle is provided with the exoskeleton, be provided with the exoskeleton O type circle on the exoskeleton, be provided with the filter screen skeleton that is used for installing the filter screen in the exoskeleton, filter screen skeleton upper end is provided with the big O type circle of skeleton that is used for sealing filter screen skeleton and exoskeleton when back flushing, the inner chamber top card of bottle is equipped with the net lid, and filter screen skeleton upper end still is provided with the sealed pad that is used for sealing filter screen skeleton and net lid when filtering and just flushing, be provided with little skeleton in the net lid, little skeleton lower extreme and filter screen skeleton joint, little skeleton outside is provided with the back flush net, so by little skeleton, the sealed pad, skeleton big O type circle, filter screen and filter screen skeleton constitute the filter screen subassembly, the bottom of bottle is equipped with the sealing member, the drain ball valve sets up in bottle bottom mouth, and drain ball valve bottom mouth communicates with each other, the upper end and the outer skeleton block of sealing member, the lower extreme and lower cover block, and the lower cover circumference sets up between drain ball valve and bottle for driving outer skeleton and the outer skeleton to rotate when rotating for the lower cover is rotated and is provided with the outer skeleton to make the outer skeleton of outer skeleton to rotate along axial direction of the outer skeleton of the drive muscle of the filter screen when the outer skeleton of setting up.
In the process of applying the novel pre-filter provided by the invention, when the pre-filter is in a positive flushing state, the filter screen component is jacked up by the ribs of the outer framework, the drainage knob is rotated, the drainage ball valve is opened, the water flow is large, and large-particle impurities can be quickly flushed. When the front filter is in a back flushing state, the lower cover is rotated, the outer framework rotates along with the lower cover, the rib drives the filter screen framework to move from the highest point to the lowest point of the stroke, namely, the filter screen assembly moves downwards from the highest point to the lowest point until the filter screen assembly can not rotate any more, so that the filter screen assembly reaches a back flushing position, the bottle body and the outer framework are sealed by the outer framework O-shaped ring, and the outer framework and the filter screen framework are sealed by the framework large O-shaped ring, therefore, water flow entering the bottle body can only enter the filter screen framework from the back flushing net and then pass through the filter screen, dirt attached on the filter screen is flushed, and the dirt is discharged together by the drain ball valve. When the front filter is in a filtering state, the drainage knob is reversely rotated, the drainage ball valve is closed, the lower cover is reversely rotated, the outer framework rotates along with the drainage ball valve, the rib drives the filter screen framework to move from the lowest point to the highest point of the stroke, namely, the filter screen assembly moves upwards from the lowest point to the highest point until the filter screen assembly cannot rotate any more, and as the filter screen framework and the filter screen cover are sealed by the sealing gasket, unfiltered tap water cannot contact the backwash screen, so that the filter screen assembly can filter tap water normally. The novel pre-filter provided by the invention has the advantages that the forward and backward flushing functions can be realized only by twisting the lower cover, the operation is simple, and as the filter screen assembly is sealed by adopting the sealing assembly when in each working state, unfiltered tap water can only flow through the filter screen assembly and be discharged from the water outlet, and the filtering effect is effectively improved.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings that are required to be used in the embodiments or the description of the prior art will be briefly described below, and it is obvious that the drawings in the following description are only embodiments of the present invention, and that other drawings can be obtained according to the provided drawings without inventive effort for a person skilled in the art.
FIG. 1 is a cross-sectional view of the overall structure of one embodiment provided by the present invention;
FIG. 2 is another angular cross-sectional view of the unitary structure shown in FIG. 1;
FIG. 3 is a schematic view of the screen assembly of FIG. 1;
FIG. 4 is a schematic view of the small skeleton shown in FIG. 1;
FIG. 5 is another angular view of the small skeletal structure of FIG. 4;
FIG. 6 is a schematic view of the structure of the filter skeleton shown in FIG. 1;
FIG. 7 is another angular view of the screen skeleton structure of FIG. 6;
FIG. 8 is a schematic view of the structure of the net cover shown in FIG. 1;
FIG. 9 is another angular view of the net cover structure shown in FIG. 8;
FIG. 10 is a schematic view of the exoskeleton shown in FIG. 1;
FIG. 11 is another angular view of the exoskeleton structure shown in FIG. 10;
FIG. 12 is a schematic view of the seal shown in FIG. 1;
FIG. 13 is a schematic view of the silica gel wiper shown in FIG. 1;
fig. 14 is a schematic view of the top structure of the bottle body shown in fig. 1.
Wherein, in fig. 1-14:
the novel plastic bottle comprises an upper cover-1, a small framework-2, a cross rib-201, a fixing buckle-202, a backwashing net-3, a framework large O-shaped ring-4, a sealing gasket-5, a framework upper O-shaped ring-6, an outer framework O-shaped ring-7, a small framework O-shaped ring-8, a net cover O-shaped ring-9, a small net sealing O-shaped ring-10, a net cover-11, a limit rib-111, a limit sheet-112, a limit cross rib-113, an outer framework-12, a rib-121, a scraping strip mounting groove-122, a mounting groove-123, a gear-124, a through hole-125, a filter screen-13, a filter screen framework-14, a bevel-141, a small plane-142, a limit-143, a limit buckle-144, a groove-145, a groove-146, a filter screen O-shaped ring-15, a sealing piece-16, a ring tooth-161, a lower cover-17, a drainage knob-18, a drainage ball valve-19, a silica gel scraping strip-20, a first scraping blade-2001, a second scraping blade 2002, a spring-21, a bottle body-22, a notch-2201.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Referring to fig. 1, fig. 2 and fig. 3, fig. 1 is a schematic overall structure of an embodiment of the present invention; FIG. 2 is another angular cross-sectional view of the unitary structure shown in FIG. 1; fig. 3 is a schematic view of the screen assembly shown in fig. 1.
In one embodiment of the present invention, the novel prefilter mainly comprises an upper cover 1, a bottle body 22, a lower cover 17 and a drain ball valve 19.
Wherein, the upper cover 1 is provided with a water inlet and a water outlet; the bottle body 22 is detachably arranged at the mounting position of the upper cover 1, the inner cavity of the bottle body 22 is provided with an outer framework 12, the outer framework 12 is provided with an outer framework O-shaped ring 7, a filter screen framework 14 for mounting a filter screen 13 is arranged in the outer framework 12, the upper end of the filter screen framework 14 is provided with a framework large O-shaped ring 4 for sealing the filter screen framework 14 and the outer framework 12 during back flushing, the top of the inner cavity of the bottle body 22 is clamped with a net cover 11, the upper end of the filter screen framework 14 is also provided with a sealing gasket 5 for sealing the filter screen framework 14 and the net cover 11 during filtering and normal flushing, the inside of the net cover 11 is provided with a small framework 2, the lower end of the small framework 2 is clamped with the filter screen framework 14, the outside of the small framework 2 is provided with a back flushing net 3, the filter screen assembly is composed of the small framework 2, the back flushing net 3, the framework large O-shaped ring 4, the sealing gasket 5, the filter screen 13 and the filter screen framework 14, the sealing piece 16 is arranged at the bottom of the bottle body 22, the drain ball valve 19 is arranged at the bottom end opening of the bottle body 22, a sewage draining channel of the drain ball valve 19 is communicated with the bottom end opening of the bottle body 22, the upper end of the sealing piece 16 is clamped with the outer framework 12, the lower end of the sealing piece 16 is clamped with the lower cover 17, the lower cover 17 is circumferentially and rotatably arranged between the drain ball valve 19 and the bottle body 22, the outer framework 12 is driven to synchronously rotate when the lower cover 17 rotates, and the outer framework 12 is provided with ribs 121 which are abutted to the lower end of the filter screen framework 14, so that the filter screen framework 14 is driven to axially move when the outer framework 12 rotates.
Specifically, when the front filter is in a positive washing state, the filter screen assembly is jacked up by the ribs 121 of the outer framework 12, the drainage knob 18 is rotated, the drainage ball valve 19 is opened, the water flow is large, and large-particle impurities can be quickly washed away. When the front filter is in a back flushing state, the lower cover 17 is rotated, the outer framework 12 rotates along with the lower cover, the rib 121 drives the filter screen framework 14 to move from the highest point to the lowest point of the stroke, namely, the filter screen assembly moves downwards from the highest point to the lowest point until the filter screen assembly cannot rotate any more, so that the filter screen assembly reaches a back flushing position, the outer framework O-shaped ring 7 seals the bottle body 22 and the outer framework 12, the framework large O-shaped ring 4 seals the outer framework 12 and the filter screen framework 14, and therefore, water flow entering the bottle body 22 can only enter the filter screen framework 14 from the back flushing net 3 and then pass through the filter screen 13, dirt attached to the filter screen 13 is flushed down, and the dirt is discharged together with the drain ball valve 19. When the front filter is in a filtering state, the water draining knob 18 is reversely rotated, the water draining ball valve 19 is closed, the lower cover 17 is reversely rotated, the outer framework 12 rotates along with the water draining ball valve, the rib 121 drives the filter screen framework 14 to move from the lowest point to the highest point of the stroke, namely, the filter screen assembly moves upwards from the lowest point to the highest point until the filter screen assembly cannot rotate any more, and as the filter screen framework 14 and the filter screen cover 11 are sealed by the sealing gasket 5, unfiltered tap water cannot contact the backwash screen 3, so that the filter screen assembly can normally filter tap water, and the forward and backwash functions can be realized only by twisting the lower cover, and the operation is simple.
Referring to fig. 4 and 5, fig. 4 is a schematic structural diagram of the small skeleton shown in fig. 1; fig. 5 is another angular view of the small skeletal structure of fig. 4.
In a preferred embodiment of the structure of the small framework 2, a cross rib 201 is arranged inside the small framework 2, a spring 21 is arranged on the cross rib 201, and the other end of the spring 21 is abutted against the net cover 11, so that when the novel pre-filter is in filtering, forward flushing and back flushing, the spring 21 is in a compression power accumulation state or a relaxation release elastic state, and the filter screen assembly can start to move up and down repeatedly conveniently. Meanwhile, the bottom of the small framework 2 is provided with a fixing buckle 202 which is clamped with the filter screen framework 14, so that the small framework 2 is fixed on the filter screen framework 14.
Referring to fig. 6 and 7, fig. 6 is a schematic structural diagram of the filter screen skeleton shown in fig. 1; fig. 7 is another angular view of the screen skeleton structure of fig. 6.
In a preferred embodiment of the structure of the filter screen frame 14, a slope 141, a facet 142 and a limit 143 are provided at the lower end of the filter screen frame 14, the slope 141, the facet 142 and the limit 143 form a spiral driving part, the driving part is abutted against the rib 121 of the outer frame 12, the driving part is driven to rotate spirally to form lifting movement when the outer frame 12 rotates, the filter screen assembly moves up and down along the axial direction, a groove 146 for installing the large O-shaped ring 4 of the frame is further provided on the side wall of the upper end of the filter screen frame 14, a limit buckle 144 is provided at the upper end of the filter screen frame 14, the limit buckle 144 is used for limiting a limit piece 112 on the fixed screen cover 11, and a groove 145 for installing the sealing gasket 5 is further provided at the upper end of the filter screen frame 14.
Referring to fig. 8, 9 and 14, fig. 8 is a schematic structural view of the mesh cover shown in fig. 1; FIG. 9 is another angular view of the net cover structure shown in FIG. 8; fig. 14 is a schematic view of the top structure of the bottle body shown in fig. 1.
In a preferred embodiment of the structure of the net cover 11, the net cover 11 is provided with a limiting rib 111 for being clamped with a notch 2201 of the bottle body 22, the net cover 11 is also provided with a limiting piece 112 matched with a limiting buckle 144, the limiting piece 112 is used for pressing the outer skeleton 12 to prevent the outer skeleton 12 from being separated upwards, in addition, the limiting piece 112 is matched with the limiting buckle 144 on the filter net skeleton 14 to enable the outer skeleton 12 to rotate, the filter net skeleton 14 does not rotate, and the net cover 11 is also provided with a limiting cross rib 113 for limiting the spring 21.
Referring to fig. 10 and 11, fig. 10 is a schematic structural view of the exoskeleton shown in fig. 1; fig. 11 is another angular view of the exoskeleton structure shown in fig. 10.
In a preferred embodiment of the structure of the outer frame 12, ribs 121 are arranged in the outer frame 12 and are in contact with the lower end of the filter screen frame 14, so that the filter screen assembly moves up and down; the scratch mounting groove 122 is used for mounting the silica gel scratch 20; the mounting groove 123 is used for mounting an outer skeleton O-ring, and enhances the sealing property between the outer skeleton 12 and the bottle body 22.
Referring to fig. 12, fig. 12 is a schematic structural view of the sealing member shown in fig. 1.
Further, the ring gear 161 of the sealing member 16 cooperates with the gear 124 of the outer frame 12 to realize synchronous rotation of the outer frame 12 and the lower cover 17. Meanwhile, a through hole 125 for sewage is arranged at the bottom of the outer framework, and the through hole 125 is communicated with a sewage channel of the drain ball valve 19.
In order to improve the tightness of the novel pre-filter, the top end and the bottom end of the filter screen 13 are provided with filter screen O-shaped rings 15; be provided with net lid O type circle 9 between net lid 11 and upper cover 1, be provided with O type circle 6 and little net sealing O type circle 10 on the skeleton between little skeleton 2 and the back flush net 3 to the top of little skeleton 2 is provided with little skeleton O type circle 8, so through addding all kinds of O type circles, has realized reinforcing filter screen subassembly's leakproofness, can also make unfiltered running water only flow through the filter screen subassembly and discharge from the delivery port simultaneously, thereby effectively improve the filter effect.
Referring to fig. 13, fig. 13 is a schematic structural diagram of the silica gel wiper shown in fig. 1.
In a preferred embodiment of the structure of the silica gel scraping bar 20, 2 silica gel scraping bars 20 are arranged on the side wall of the outer frame 12 along the axial direction, and a first scraping blade 2001 for contacting with the outer surface of the filter screen 13 when the outer frame 12 rotates is arranged on one side of the silica gel scraping bar 20 to scrape dirt of the filter screen 13; the other side of the silica gel scraping bar 20 is provided with a second scraping blade 2002 which is used for contacting with the inner surface of the bottle body 22 when the outer framework 12 rotates, so as to scrape dirt passing through the inner surface of the bottle body 22.
Based on this, during normal filtration, the ribs 121 inside the outer frame 12 contact the facets 142 at the lower end of the screen frame 14, the screen assembly is lifted up by the ribs 121, and the springs 21 are in a compressed power storage state. At the same time, the filter screen skeleton 14 and the screen cover 11 are sealed by the sealing gasket 5, and unfiltered tap water cannot contact the backwash screen 3. In the normal flushing state, the filter screen assembly is jacked up by the ribs 121 of the outer framework 12, the spring 21 is still in a compressed state, the water discharge knob 18 is rotated anticlockwise, the water discharge ball valve 19 is opened, and in the normal flushing state, water flow is large, so that large-particle impurities can be quickly flushed. In the back flushing state, the lower cover 17 is rotated, the outer framework 12 rotates along with the lower cover, the ribs 121 rotate from the small plane 142 on the filter screen framework 14 to the inclined plane 141, the filter screen assembly starts to move downwards under the action of the springs 21, and when the ribs 121 touch the limit, the ribs cannot rotate any more and reach the back flushing position. The outer framework O-shaped ring 7 seals the bottle body 22 and the outer framework 12, and the large framework O-shaped ring 4 seals the outer framework 12 and the filter screen framework 14, so that water flow entering the bottle body 22 can only enter the filter screen framework 14 from the backwash screen 3 and then pass through the filter screen 13, and dirt attached to the filter screen 13 is washed down and discharged from the drain ball valve 19 together. While the lower cover 17 rotates, the silica gel scraping strips 20 arranged on the outer framework 12 scrape the inner surface of the bottle body 22 and the surface of the filter screen 13, so that dirt on the bottle body 22 and the filter screen 13 can be scraped off and discharged along with backwash water flow. When the filter is restored to the filtering state, after the back flushing is completed, the drain knob 18 is reversely rotated, the drain ball valve 19 is closed, the lower cover 17 is reversely rotated, the ribs 121 of the outer framework 12 rotate towards the small plane 142 along the inclined plane 141, the filter screen assembly moves upwards, the spring 21 is gradually compressed, and when the ribs 121 touch the limit 143, the ribs cannot rotate any more, so that the filter is restored to the filtering state.
In summary, the novel pre-filter provided in this embodiment mainly includes the upper cover 1, the bottle 22, the lower cover 17 and the drain ball valve 19. Wherein, the upper cover 1 is provided with a water inlet and a water outlet; the bottle body 22 is detachably arranged at the mounting position of the upper cover 1, the inner cavity of the bottle body 22 is provided with an outer framework 12, the outer framework 12 is provided with an outer framework O-shaped ring 7, a filter screen framework 14 for mounting a filter screen 13 is arranged in the outer framework 12, the upper end of the filter screen framework 14 is provided with a framework large O-shaped ring 4 for sealing the filter screen framework 14 and the outer framework 12 during back flushing, the top of the inner cavity of the bottle body 22 is clamped with a net cover 11, the upper end of the filter screen framework 14 is also provided with a sealing gasket 5 for sealing the filter screen framework 14 and the net cover 11 during filtering and normal flushing, the inside of the net cover 11 is provided with a small framework 2, the lower end of the small framework 2 is clamped with the filter screen framework 14, the outside of the small framework 2 is provided with a back flushing net 3, the filter screen assembly is composed of the small framework 2, the back flushing net 3, the framework large O-shaped ring 4, the sealing gasket 5, the filter screen 13 and the filter screen framework 14, the sealing piece 16 is arranged at the bottom of the bottle body 22, the drain ball valve 19 is arranged at the bottom end opening of the bottle body 22, a sewage draining channel of the drain ball valve 19 is communicated with the bottom end opening of the bottle body 22, the upper end of the sealing piece 16 is clamped with the outer framework 12, the lower end of the sealing piece 16 is clamped with the lower cover 17, the lower cover 17 is circumferentially and rotatably arranged between the drain ball valve 19 and the bottle body 22, the outer framework 12 is driven to synchronously rotate when the lower cover 17 rotates, and the outer framework 12 is provided with ribs 121 which are abutted to the lower end of the filter screen framework 14, so that the filter screen framework 14 is driven to axially move when the outer framework 12 rotates. The novel pre-filter provided by the invention has the advantages that the forward and backward flushing functions can be realized only by twisting the lower cover, the operation is simple, and as the filter screen assembly is sealed by adopting the sealing assembly when in each working state, unfiltered tap water can only flow through the filter screen assembly and be discharged from the water outlet, and the filtering effect is effectively improved.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (9)
1. The novel pre-filter comprises an upper cover (1) and a drain ball valve (19), wherein a water inlet and a water outlet are formed in the upper cover (1), and the novel pre-filter is characterized by further comprising a bottle body (22) and a lower cover (17), wherein the top of the bottle body (22) is detachably connected with the upper cover (1), an outer framework (12) is arranged in an inner cavity of the bottle body (22), an outer framework O-shaped ring (7) is arranged on the outer framework (12), and the outer framework O-shaped ring (7) always seals a gap between the bottle body (22) and the outer framework (12);
the inside of the outer framework (12) is provided with a filter screen framework (14) for installing a filter screen (13), the upper end of the filter screen framework (14) is provided with a framework large O-shaped ring (4) for sealing the filter screen framework (14) and the outer framework (12) during back flushing, a net cover (11) is clamped at the top of an inner cavity of the bottle body (22), the upper end of the filter screen framework (14) is also provided with a sealing pad (5) for sealing the filter screen framework (14) and the net cover (11) during filtering and positive flushing, a small framework (2) is arranged in the net cover (11), the lower end of the small framework (2) is clamped with the filter screen framework (14), the outside of the small framework (2) is provided with a back flushing net (3), the bottom of the bottle body (22) is provided with a sealing piece (16), a drain ball valve (19) is arranged at the bottom end opening of the bottle body (22), a drain ball valve (19) is communicated with the bottom end opening of the bottle body (22), the sealing piece (16) is clamped with the upper end of the filter screen framework (14) and the lower end of the filter screen framework (12) and the drain ball valve (17) are rotatably arranged at the lower end of the bottle body (22), the drain ball valve (17) is rotatably arranged at the lower end of the filter screen framework (12), the outer framework (12) is provided with ribs (121) which are abutted with the lower end of the filter screen framework (14) so that the outer framework (12) drives the filter screen framework (14) to move up and down along the axial direction of the filter screen framework;
the filter screen framework (14) moves upwards, so that the sealing gasket (5) seals a gap between the filter screen framework (14) and the screen cover (11), and the sealing of the large O-shaped ring (4) of the framework to the filter screen framework (14) and the outer framework (12) is released;
the filter screen framework (14) moves downwards, so that the large O-shaped ring (4) of the framework seals a gap between the filter screen framework (14) and the outer framework (12), and the sealing gasket (5) is released from sealing the filter screen framework (14) and the screen cover (11);
the utility model discloses a filter screen skeleton (14), including filter screen skeleton (14), filter screen skeleton (14) upper end, filter screen skeleton (14) lower extreme is provided with inclined plane (141), facet (142) and spacing (143), inclined plane (141) facet (142) with spacing (143) form spiral drive portion, drive portion with muscle (121) butt of outer skeleton (12), still be provided with on the filter screen skeleton (14) upper end lateral wall and be used for the installation slot (146) of big O type circle (4) of skeleton, filter screen skeleton (14) upper end is provided with spacing buckle (144), filter screen skeleton (14) upper end still is provided with be used for the installation recess (145) of sealed pad (5).
2. The novel pre-filter according to claim 1, wherein a cross rib (201) is arranged inside the small framework (2), a spring (21) is arranged on the cross rib (201), the other end of the spring (21) is abutted to the net cover (11), and a fixing buckle (202) clamped with the filter screen framework (14) is arranged at the bottom of the small framework (2).
3. The novel pre-filter according to claim 2, wherein the net cover (11) is provided with a limiting rib (111) for being clamped with a notch (2201) of the bottle body (22), the net cover (11) is further provided with a limiting sheet (112) matched with the limiting buckle (144), and the net cover (11) is further provided with a limiting cross rib (113) for limiting the spring (21).
4. A novel pre-filter according to claim 3, characterized in that the exoskeleton (12) is provided with a gear (124) cooperating with the ring teeth (161) of the sealing member (16) to achieve a synchronous rotation of the exoskeleton (12) and the lower cover (17).
5. The novel pre-filter according to claim 4, characterized in that the bottom of the exoskeleton (12) is provided with a through hole (125) for blowdown, and the through hole (125) is in communication with the drain ball valve (19) blowdown channel.
6. The novel pre-filter according to claim 5, characterized in that the top and bottom ends of the filter screen (13) are provided with filter screen O-rings (15).
7. The novel pre-filter according to claim 5, characterized in that a net cover O-ring (9) is arranged between the net cover (11) and the upper cover (1).
8. The novel pre-filter according to claim 5, wherein an on-framework O-ring (6) and a small-net sealing O-ring (10) are arranged between the small framework (2) and the back flushing net (3), and a small-framework O-ring (8) is arranged at the top end of the small framework (2).
9. The novel pre-filter according to any one of claims 1-8, further comprising a silica gel scraping strip (20) axially arranged on the side wall of the outer frame (12), wherein one side of the silica gel scraping strip (20) is provided with a first scraping blade (2001) for contacting the outer surface of the filter screen (13) when the outer frame (12) rotates, and the other side of the silica gel scraping strip (20) is provided with a second scraping blade (2002) for contacting the inner surface of the bottle body (22) when the outer frame (12) rotates.
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| CN201710883278.1A CN107754420B (en) | 2017-09-26 | 2017-09-26 | Novel pre-filter |
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| CN201710883278.1A CN107754420B (en) | 2017-09-26 | 2017-09-26 | Novel pre-filter |
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| CN107754420B true CN107754420B (en) | 2023-04-28 |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108837578A (en) * | 2018-06-28 | 2018-11-20 | 李渊 | A kind of inversion type fore filter |
| CN108905338A (en) * | 2018-09-10 | 2018-11-30 | 诸暨市来诺环境科技有限公司 | Universal directional multifunctional fore filter |
| CN112023482A (en) * | 2020-08-31 | 2020-12-04 | 杭州沁田科技有限公司 | Leading filter of central authorities |
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| CN107754420A (en) | 2018-03-06 |
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