CN217068004U - Manual-automatic integrated rotary cleaning pre-filter - Google Patents

Abstract

The utility model relates to a manual-automatic rotatory leading filter that washs, including aircraft nose, filter flask, the filter flask bottom is equipped with the assembly chamber, is equipped with the blowdown subassembly in the assembly chamber, and the filter flask internal fixation is equipped with filtering mechanism, still locates the outside skeleton of scraping of filtering mechanism including the cover, scrapes and washes skeleton inner wall and/or outer wall and be equipped with convex scraping and washing piece, and the position that filtering mechanism is close to the aircraft nose water inlet is equipped with the rivers converting part, the rivers converting part can make the rivers rotation of aircraft nose intake, its characterized in that: the scraping and washing framework is provided with a first rotary connecting structure; scrape and wash the skeleton and rotate with filtering mechanism through first rotation connection structure and be connected, under the rivers impact, scrape and wash the skeleton and can independently rotate for filtering mechanism along with rivers direction, and rotate connection structure's cooperation through first rotation connection structure and second, scrape and wash the skeleton and can rotate along with blowdown subassembly under the drive of external force in step. The self-rotating scraping structure is optimized, installed, used and maintained, low in processing cost and not easy to cause faults.

Description

Manual-automatic integrated rotary cleaning pre-filter

Technical Field

The utility model relates to a manual-automatic rotatory leading filter that washs belongs to water purification unit technical field.

Background

The pre-filter of the prior art comprises: the filter comprises a machine head, a filter flask with the upper end connected with the machine head, and a drainage ball valve connected with the lower end of the filter flask, wherein a filter screen framework is arranged in the filter flask, and a filter screen (collectively called a filter mechanism) is sleeved on the outer wall of the filter screen framework. In the using process, water flows into a gap between the filter flask and the filter screen from a water inlet of the machine head, flows into the center of the filter screen framework after being filtered by the filter screen, and then flows to a water outlet of the machine head from the center of the filter screen framework, and the front filter is deeply inserted into thousands of households and high-grade hotels.

In the use of leading filter, need the unscheduled normal position to wash the impurity of attaching to filter screen surface, then discharge via the blowoff valve, scrape the high-efficient operation of washing the structure and be vital, among the prior art, there is the structure of scraping through motor drive, impeller drive scrapes and washes the structure etc. how with the help of the impact force of rivers self, realizes that autogyration scrapes and washes the research more, the scraping of prior art has the structure complicacy, with high costs not enough.

In addition, the blowdown structure that the cooperation autogyration was scraped and is washed also adaptability adjustment to better performance autogyration is washd and manual cleaning function, the utility model discloses aim at solving this technical problem.

SUMMERY OF THE UTILITY MODEL

One of the purposes of the utility model is to solve the not enough of the rotatory structure of scraping and washing of leading filter and blowdown structure of prior art, provide a leading filter of manual-automatic rotatory washing. The self-rotating scraping structure of the pre-filter is more optimized, installed, used and maintained, low in processing cost and not easy to cause faults. The water flow impact in the use process of the pre-filter is accompanied, the rotation is continued, and the deposition of impurities on the surface of the filter device is avoided. The pollution discharge structure of the pre-filter is optimized and matched with the self-rotating scraping structure for use, so that the self-rotating cleaning and manual cleaning functions can be better exerted.

The utility model provides a technical scheme that its technical problem adopted is:

leading filter of manual-automatic rotatory washing, including the aircraft nose of taking into mouth of a river and delivery port, with aircraft nose complex filter flask, the filter flask bottom is equipped with the assembly chamber, is equipped with the blowdown subassembly in the assembly chamber, and the filter flask internal fixation is equipped with filtering mechanism, still locates the outside skeleton of washing of scraping of filtering mechanism including the cover, scrapes and washes skeleton inner wall and/or outer wall and be equipped with convex piece of washing of scraping, and the position that filtering mechanism is close to the aircraft nose water inlet is equipped with the rivers converting part, the rivers converting part can make the rivers rotation of aircraft nose intake, its characterized in that: the scraping and washing framework is provided with a first rotary connecting structure;

the sewage discharging assembly comprises a sewage accommodating cavity and a sewage discharging control part, wherein the periphery of the top of the sewage accommodating cavity is provided with an abutting part which can abut against the inner wall of a filter bottle of the pre-filter, the center of the sewage accommodating cavity is provided with a siphon sewage discharging channel, the top of the siphon sewage discharging channel is provided with a second rotating connecting structure, the upper side wall of the sewage accommodating cavity is provided with at least one direct flushing water discharging channel A, the lower side wall of the sewage accommodating cavity is provided with at least one direct flushing water discharging channel B, the bottom end of the sewage accommodating cavity is provided with at least one matching groove, the blowdown control part comprises a blowdown control part and an assembly part which are communicated, the blowdown control part is provided with at least one convex block, the side wall of the blowdown control part is provided with at least one direct flushing drainage channel C, the blowdown control part is axially detachably connected with the bottom end of the blowdown accommodating cavity and can rotate relatively, the convex block can be communicated or disconnected with the direct flushing drainage channel B and the direct flushing drainage channel C when moving in a matching groove, and the siphon blowdown channel and the direct flushing drainage channel C are both communicated with an inner cavity of the assembly part;

scrape and wash the skeleton and rotate with filtering mechanism through first rotation connection structure and be connected, under the rivers impact, scrape and wash the skeleton and can independently rotate for filtering mechanism along with rivers direction, and rotate connection structure's cooperation through first rotation connection structure and second, scrape and wash the skeleton and can rotate along with blowdown subassembly under the drive of external force in step.

The utility model discloses the autogyration scraping structure that leading filter used cooperates the filtering mechanism who is equipped with rivers converting part near the position of aircraft nose water inlet to use, and water gets into from the aircraft nose water inlet after, and the rotation is accelerated under the effect of rivers converting part, then drives the rotation of scraping the skeleton, scrapes the skeleton inner wall and/or outer wall and is equipped with convex scraping part, scrapes in real time and washes the filter flask inner wall of leading filter or the outer wall of filtering mechanism, avoids the deposit of impurity;

the utility model discloses can switch the blowdown runner, realize the siphon back flush blowdown of tiny particle impurity, also can realize the direct flush blowdown that washes of large particle impurity.

Preferably, scrape and wash the skeleton bottom and be equipped with the supporting seat, first rotation connection structure includes that the mirror image locates the first pivot and the second pivot at supporting seat center, scrape and wash the skeleton and rotate through the cooperation of first pivot and filter mechanism bottom and be connected.

Preferably, scrape and wash the skeleton bottom and be equipped with the scraping dish, scrape and wash the dish and be equipped with a plurality of holes of permeating water, first rotation connection structure includes that the mirror image is located the first pivot and the second pivot of scraping the dish center, it is connected through the cooperation rotation of first pivot and filter mechanism bottom to scrape the skeleton of washing.

A first rotating shaft is arranged at the center of the scraping and washing disc, and a rotating shaft hole is formed in the bottom end of the filtering mechanism, so that the rotating connection is realized. Certainly, the center of the scraping and washing disc can be provided with a rotating shaft hole, and the end part of the filtering mechanism is provided with a rotating shaft, and the two are substantially the same technical schemes. The supporting seat is set into a disc shape, namely a disc type scraping and washing structure, so that the supporting seat can be conveniently matched with a pollution discharge assembly of a front filter for use, when a pollution discharge outlet is opened, water flows to the pollution discharge outlet, the disc scraping and washing structure falls down to a certain displacement under the action of water flow impact and gravity, and the disc scraping and washing structure is linked with the pollution discharge assembly to facilitate manual rotation pollution discharge.

Preferably, a limiting part for controlling the axial movement distance between the first rotating shaft and the bottom end of the filtering mechanism is further arranged between the first rotating shaft and the bottom end of the filtering mechanism. In principle, the limiting part is not needed, but the limiting part is arranged to control the axial displacement in order to ensure the stability of the scraping and washing framework during rotation. When the structure is used with the sewage discharge assembly, the sewage discharge assembly can move upwards for a certain displacement and is linked with the scraping and washing framework, and further manual rotation scraping and washing is realized (different from the structure in which the scraping and washing disk falls and is linked with the sewage discharge assembly when no limiting piece is arranged).

Preferably, the second rotating shaft comprises a rotating shaft seat, a rotating shaft body and a ratchet structure A arranged outside the rotating shaft body, the second rotating shaft is detachably connected with the supporting seat through the rotating shaft seat, the end part of the rotating shaft body protrudes out of the ratchet structure A, the second rotating connecting mechanism is a ratchet structure B, and through the matching of the ratchet structure A and the ratchet structure B, the framework is scraped and washed to synchronously rotate along with the blowdown assembly in the reverse water flow direction under the driving of external force.

The utility model discloses in, the design of second pivot is in order to realize manual rotation washing with other parts cooperation of other leading filters, also satisfies the automatic rotation simultaneously and washs, can satisfy manual abluent requirement of rotating again. The manual cleaning is carried out through the matching of the ratchet structure and other components (such as the ratchet structure of the pollution discharge assembly).

Preferably, the scraping and washing framework comprises at least two scraping and washing rods, and fins or ribs are arranged between the scraping and washing rods.

Preferably, the scraping and washing rod is provided with fins which are spiral and are arranged in parallel in a staggered manner. Under this kind of structure, rotatory rivers are to scraping the drive of washing skeleton, and the parallel crisscross setting can make full use of the power of rivers, avoids weakening the rotation drive effect of rivers.

Preferably, scrape and wash pole outside axial and be equipped with the mounting groove, be equipped with the mounting hole in the mounting groove, scrape and wash the piece and include fixed part, base member and scrape the washing piece, fixed part and mounting hole adaptation, base member and mounting groove adaptation scrape the washing piece and set up against scraping skeleton direction of rotation slope.

Defining: the slope of the scraping and washing sheet against the rotation direction of the scraping and washing frame means that the scraping and washing frame rotates clockwise relative to the inner wall of the filter bottle of the front filter, the reverse slope of the scraping and washing sheet is arranged, the back of the scraping and washing sheet is abutted against the inner wall of the filter bottle at the moment, and when impurities on the inner wall of the filter bottle are more, the scraping and washing sheet can be bounced off to avoid direct hard contact, so that the friction force is too large, the rotation effect is influenced, and in addition, the abrasion of the scraping and washing sheet is also small due to the contact mode.

Preferably, scrape and wash the inboard axial of pole and be equipped with the mounting groove, be equipped with the fixed part in the mounting groove, scrape and wash the piece and include mounting hole, base member and scrape the piece of washing, fixed part and mounting hole adaptation, base member and mounting groove adaptation scrape the piece and set up against scraping the slope of washing skeleton direction of rotation.

Preferably, the scraping and washing rod is further axially provided with at least one siphon channel, and the siphon channel is provided with a matched siphon part. Through the cooperation of siphon passageway and siphon spare, can realize the siphon back flush, improve the removal effect of filter mechanism impurity.

Preferably, the abutting part of the pollutant containing cavity is provided with an annular groove, and an elastic element capable of increasing the friction force between the abutting part and the inner wall of the filter flask is arranged in the annular groove. The elastic element is an O-shaped sealing ring.

Preferably, the number of the direct flushing drainage channels A is at least 2, the number of the direct flushing drainage channels B is 2, the number of the direct flushing drainage channels C matched with the direct flushing drainage channels B is 2, and the lug moves in the matching groove and can be simultaneously communicated or disconnected with the two direct flushing drainage channels B and the two direct flushing drainage channels C. 2 and a plurality of settings improve the direct-flushing blowdown efficiency.

Preferably, the number of the matching grooves and the number of the projections are two. The stability and the reliability of the pollution discharge structure are improved.

Preferably, the pollution discharge control part is axially clamped with the bottom end of the pollution discharge cavity.

Preferably, the assembly part is provided with a sealing groove, a sealing ring is arranged in the sealing groove, and the assembly part is in interference fit and sealing connection with the inner wall of the assembly cavity through the sealing ring.

Preferably, the outer end of the assembling portion is fixedly provided with a control valve.

Preferably, the assembly part is provided with a sealing groove, a sealing ring is arranged in the sealing groove, the assembly part is in interference fit and sealing connection with the inner wall of the assembly cavity through the sealing ring, and when the sewage discharging assembly is opened for sewage discharging, the assembly part can axially move upwards relative to the assembly cavity under the action of external force until the second rotating connection structure is linked with the second rotating shaft, the sewage discharging assembly is rotated to synchronously rotate the scraping framework, so that manual scraping is realized; after the pollution discharge is finished, the pollution discharge assembly is closed, under the action of external force, the assembly part can move downwards in the axial direction to a state that the second rotating connection structure and the second rotating shaft are disconnected, and the scraping and washing assembly rotates along with water flow under the impact of water flow, so that automatic cleaning is realized. The manual pollution discharge mode is used by matching with a structure that a limiting piece for controlling the axial movement distance between the first rotating shaft and the bottom end of the filtering mechanism is arranged between the first rotating shaft and the bottom end of the filtering mechanism.

The utility model has the advantages that: the self-rotating scraping and washing structure is more optimized, installed, used and maintained, low in processing cost and not easy to cause faults. The water flow impact in the use process of the pre-filter is accompanied, the rotation is continued, and the deposition of impurities on the surface of the filter device is avoided. The pollution discharge structure of the pre-filter is optimized and matched with the self-rotating scraping structure for use, so that the self-rotating cleaning and manual cleaning functions can be better exerted.

Drawings

Fig. 1 is a schematic structural diagram of the present invention;

fig. 2 is an exploded view of the present invention;

FIG. 3 is a schematic view of the partial structure of the present invention (illustrating the installation manner of the scraping and washing strip);

FIG. 4 is a schematic view of a self-rotating scraping structure of the present invention;

FIG. 5 is an exploded view of FIG. 4;

FIG. 6 is another exploded view of FIG. 4;

fig. 7 is a schematic view of a sewage draining structure of the present invention;

FIG. 8 is an exploded view of FIG. 7;

fig. 9 is a cross-sectional view of the present invention (direct flush blowdown mode);

fig. 10 is a cross-sectional view of the present invention (siphon flush blowdown mode).

In the figure: 1. the device comprises a scraping and washing framework, a scraping and washing disc, a first rotating shaft, a second rotating shaft, a rotating shaft seat, a rotating shaft body, a ratchet structure, a scraping and washing piece, a rotating shaft body, a ratchet structure, a water flow conversion piece, a siphon channel, a water flow conversion piece, a siphon channel and a siphon piece, wherein the scraping and washing framework is 11, the scraping and washing disc, 12, the first rotating shaft, 13, the second rotating shaft, 13a rotating shaft seat, 13b, the rotating shaft body, 13c, the ratchet structure, 2, the scraping and washing piece, 3, a spiral wing piece, 4, a water flow conversion piece, 5, a siphon channel, 6 and a siphon piece; 7. the sewage collecting cavity comprises a sewage containing cavity 71, a siphon sewage draining channel 72, a ratchet structure 73, straight flushing water draining channels A and 74, straight flushing water draining channels B and 75, a matching groove 8, a sewage draining control part 81, a convex block 82, straight flushing water draining channels B and 9, a machine head 10, a filter flask 11 and a control valve.

Detailed Description

The technical solution of the present invention is further specifically described below by way of specific embodiments and with reference to the accompanying drawings.

Example (b):

as shown in fig. 1-10, the structure is scraped in pre-filter's autogyration, including can overlapping the frame 1 of washing of scraping that locates the outside of the filtering mechanism of pre-filter, scrape and wash that skeleton inner wall and/or outer wall are equipped with convex piece 2 of washing of scraping, it is equipped with a plurality of spiral wing pieces 3 to scrape to wash skeleton 1 periphery along the water flow direction, just it still is equipped with first rotation connection structure to scrape to wash skeleton 1, it rotates with filtering mechanism through first rotation connection structure to scrape to wash skeleton 1 and is connected.

The utility model provides a leading filter, includes aircraft nose 9 and filter flask 10, is equipped with filtering mechanism in the filter flask 10, and the position that filtering mechanism is close to the aircraft nose water inlet is equipped with rivers converting part 4, rivers converting part 4 can make the rivers rotation that the aircraft nose intake, the filtering mechanism outside is equipped with the utility model discloses a structure is scraped in autogyration.

The utility model discloses a structure is scraped in autogyration, the position that the cooperation is close to the aircraft nose water inlet is equipped with the filtering mechanism of rivers converting part 4 and uses, and water gets into the back from the aircraft nose water inlet, and is rotatory with higher speed under the effect of rivers converting part 4, then drives and scrapes the rotation of washing skeleton 1, scrapes and washes 1 inner wall of skeleton and/or outer wall and be equipped with convex scraping and wash 2, scrapes in real time and washes the filter flask inner wall of leading filter or filtering mechanism's outer wall, avoids the deposit of impurity.

It specifically arrives the utility model discloses, scrape and wash 1 bottom of skeleton and be equipped with and scrape washing dish 11, scrape washing dish 11 and be equipped with a plurality of holes of permeating water, first rotation connection structure includes that the mirror image is located and is scraped first pivot 12 and the second pivot 13 at washing dish 11 center, it is connected with the cooperation rotation of filter mechanism bottom through first pivot 12 to scrape washing skeleton 1.

A first rotating shaft 12 is arranged at the center of the scraping and washing disc 11, and a rotating shaft hole is formed in the bottom end of the filtering mechanism to realize rotating connection. Of course, the center of the scraping and washing tray 11 may be provided with a rotating shaft hole, and the end of the filtering mechanism is provided with a rotating shaft, which are substantially the same technical solutions.

It is specific to arrive the utility model discloses, second pivot 13 includes pivot seat 13a, pivot body 13b and locates the outside ratchet 13c of pivot body 13b, and second pivot 13 can be dismantled with scraping and washing dish 11 through pivot seat 13a and be connected, like the joint, and pivot body 13 b's tip salient is in ratchet 13 c.

The utility model discloses in, the design of second pivot 13 is in order to realize manual rotation washing with other parts cooperation of other leading filters, also satisfies the automatic rotation simultaneously and washs, can satisfy the abluent requirement of manual rotation again. Manual cleaning is performed by the engagement of the ratchet structure 13c with other components.

Specifically to this embodiment, scrape and wash skeleton 1 and include two at least scraping and washing poles, spiral wing piece 3 locates and scrapes between the washing pole, and parallel crisscross setting. Under this kind of structure, rotatory rivers are to scraping and washing skeleton 1 drive, and the parallel crisscross setting can make full use of the power of rivers, avoids weakening the rotation drive effect of rivers.

Concrete to this embodiment, scrape and wash pole outside axial and be equipped with the mounting groove, be equipped with the mounting hole in the mounting groove, scrape and wash piece 2 and include fixed part, base member and scrape the washing piece, fixed part and mounting hole adaptation, base member and mounting groove adaptation scrape the washing piece and set up against scraping 1 direction of rotation slope of washing skeleton.

Defining: what the so-called scraping and washing piece 2 set up against scraping and washing 1 direction of rotation slope means, scraping and washing 1 skeleton and rotating clockwise for the filter flask inner wall of leading filter, scraping and washing 2 reverse slope settings, scraping and washing 2 the back and filter flask inner wall butt this moment, when the impurity of filter flask inner wall is more, scraping and washing 2 can bounce off, avoid direct hard contact, lead to frictional force too big, influence the rotational effect, in addition, this kind of contact pattern, also less to scraping and washing 2 wearing and tearing.

Concrete to this embodiment, scrape and wash the inboard axial of pole and be equipped with the mounting groove, be equipped with the fixed part in the mounting groove, scrape and wash 2 including mounting hole, base member and scraping and washing the piece, fixed part and mounting hole adaptation, base member and mounting groove adaptation scrape and wash 2 and set up against scraping 1 direction of rotation slope of washing skeleton.

Specifically to this embodiment, scrape and wash the pole axial and still be equipped with at least one siphon passageway 5, siphon passageway 5 is equipped with the siphon 6 of adaptation. Through the cooperation of siphon passageway 5 and siphon 6, can realize the siphon back flush, improve the removal effect of filter equipment impurity.

The utility model has the advantages that: the self-rotating scraping and washing structure is more optimized, installed, used and maintained, low in processing cost and not easy to cause faults. The water flow impact in the use process of the pre-filter is accompanied, the rotation is continued, and the deposition of impurities on the surface of the filter device is avoided.

The blowdown structure of the pre-filter comprises a blowdown cavity 7 and a blowdown control part 8, wherein the periphery of the top of the blowdown cavity 7 is provided with an abutting part which can abut against the inner wall of a filter bottle of the pre-filter, the center of the blowdown cavity 7 is provided with a siphon blowdown channel 71, the top of the siphon blowdown channel 71 is provided with a ratchet wheel structure 72, the upper side wall of the blowdown cavity 7 is provided with at least one direct flushing drainage channel A73, the lower side wall of the blowdown cavity is provided with at least one direct flushing drainage channel B74, the bottom of the blowdown cavity 7 is provided with at least one matching groove 75, the pollution discharge control part comprises a pollution discharge control part and an assembly part which are communicated, the pollution discharge control part is provided with at least one convex block 81, the side wall of the pollution discharge control part is provided with at least one straight flushing drainage channel C82, the pollution discharge control part is axially detachably connected with the bottom end of the pollution containing cavity 7 and can rotate relatively, and the convex block 81 can be communicated or disconnected with the straight flushing drainage channel B74 and the straight flushing drainage channel C82 in the matching groove 75;

the siphon waste channel 71 and the straight flushing drain channel C82 are both in communication with the inner cavity of the fitting.

The utility model discloses can switch the blowdown runner, realize the siphon back flush blowdown of tiny particle impurity, also can realize the direct flush blowdown that washes of large particle impurity.

It specifically arrives the utility model discloses, the top periphery in soil accommodating cavity 1 is equipped with the ring channel, is equipped with the elastic element that can increase frictional force between butt portion and filter flask inner wall in the ring channel, and specific elastic element is O shape sealing washer that says so. The outer wall of the pollutant containing cavity 1 is abutted and sealed with the inner wall of a filter flask of the pre-filter.

Specifically, the number of the straight flushing drainage channels a73 is at least 2, the number of the straight flushing drainage channels B74 is 2, the number of the straight flushing drainage channels C82 matched with the straight flushing drainage channels B74 is 2, and the lug 81 can simultaneously connect or disconnect the two straight flushing drainage channels B74 and the straight flushing drainage channel C82 when moving in the matching groove 75. 2 and a plurality of arrangement, improve the straight blow-off efficiency, cooperation groove 75 and lug 81 are equipped with two respectively. The stability and the reliability of the pollution discharge structure are improved. The blowdown control portion is connected with the bottom end of the sewage containing cavity 7 in an axial clamping mode, and the assembling portion is provided with threads for fixed assembling. And a control valve 11 is fixedly arranged at the outer end of the assembling part.

The utility model has the advantages that: the pollution discharge structure is more optimized, installed, used and maintained, has low processing cost and is not easy to cause faults. The water flow impact in the use process of the pre-filter is accompanied, the rotation is continued, and the deposition of impurities on the surface of the filter device is avoided.

The leading filter of this embodiment, when the drain was opened, rivers flowed toward the drain, and the washing dish 11 falls certain displacement under rivers impact and action of gravity, with the linkage of blowdown subassembly, convenient manual rotation blowdown. After the drain outlet is closed, the scraping and washing framework 1 rotates along the water flow direction under the impact of the rotating water flow, and self-cleaning is realized. The above-described embodiments are only preferred embodiments of the present invention, and are not intended to limit the present invention in any way, and other variations and modifications may be made without departing from the scope of the claims. Such as: a limiting part (such as a bolt and nut assembly) for controlling the axial movement distance between the first rotating shaft 12 and the bottom end of the filtering mechanism is further arranged between the first rotating shaft 12 and the bottom end of the filtering mechanism, other structures are the same as those of the previous embodiment, but the assembling part is provided with a sealing groove, a sealing ring is arranged in the sealing groove, the assembling part is in interference fit and sealing connection with the inner wall of the assembling cavity through the sealing ring, and when the pollution discharge assembly is opened for pollution discharge, the assembling part can axially move upwards relative to the assembling cavity to the second rotating connection structure and is linked with the second rotating shaft 13 under the action of external force, and the rotating pollution discharge assembly synchronously rotates the scraping framework to realize manual scraping; the blowdown is ended, closes the blowdown subassembly, and under the exogenic action, the relative assembly chamber of assembly portion can the axial move down to second rotation connection structure and 13 off-states in second pivot, scrapes and washes the subassembly and rotate along with the rivers under the rivers impact, realizes self-cleaning.

Claims (18)

1. Leading filter of manual-automatic rotatory washing, including the aircraft nose of taking into mouth of a river and delivery port, with aircraft nose complex filter flask, the filter flask bottom is equipped with the assembly chamber, is equipped with the blowdown subassembly in the assembly chamber, and the filter flask internal fixation is equipped with filtering mechanism, still locates the outside skeleton of washing of scraping of filtering mechanism including the cover, scrapes and washes skeleton inner wall and/or outer wall and be equipped with convex piece of washing of scraping, and the position that filtering mechanism is close to the aircraft nose water inlet is equipped with the rivers converting part, the rivers converting part can make the rivers rotation of aircraft nose intake, its characterized in that: the scraping and washing framework is provided with a first rotary connecting structure;

the sewage discharging assembly comprises a sewage accommodating cavity and a sewage discharging control part, wherein the periphery of the top of the sewage accommodating cavity is provided with an abutting part which can abut against the inner wall of a filter bottle of the pre-filter, the center of the sewage accommodating cavity is provided with a siphon sewage discharging channel, the top of the siphon sewage discharging channel is provided with a second rotating connecting structure, the upper side wall of the sewage accommodating cavity is provided with at least one direct flushing water discharging channel A, the lower side wall of the sewage accommodating cavity is provided with at least one direct flushing water discharging channel B, the bottom end of the sewage accommodating cavity is provided with at least one matching groove, the blowdown control part comprises a blowdown control part and an assembly part which are communicated, the blowdown control part is provided with at least one convex block, the side wall of the blowdown control part is provided with at least one direct flushing drainage channel C, the blowdown control part is axially detachably connected with the bottom end of the blowdown accommodating cavity and can rotate relatively, the convex block can be communicated or disconnected with the direct flushing drainage channel B and the direct flushing drainage channel C when moving in a matching groove, and the siphon blowdown channel and the direct flushing drainage channel C are both communicated with an inner cavity of the assembly part;

scrape and wash the skeleton and rotate with filtering mechanism through first rotation connection structure and be connected, under the rivers impact, scrape and wash the skeleton and can independently rotate for filtering mechanism along with rivers direction, and rotate connection structure's cooperation through first rotation connection structure and second, scrape and wash the skeleton and can rotate along with blowdown subassembly under the drive of external force in step.

2. The pre-filter for manual-automatic rotary cleaning according to claim 1, wherein: scrape and wash skeleton bottom and be equipped with the supporting seat, first rotation connection structure includes that the mirror image locates the first pivot and the second pivot at supporting seat center, it is connected with the cooperation rotation of filter mechanism bottom through first pivot to scrape to wash the skeleton.

3. The pre-filter for manual-automatic rotary cleaning according to claim 2, characterized in that: the supporting seat is a scraping and washing disc which is provided with a plurality of water permeable holes.

4. The manual-automatic rotating cleaning prefilter of claim 2 wherein a position limiter is further arranged between said first rotating shaft and said bottom end of said filter mechanism for controlling the axial distance between said first rotating shaft and said bottom end of said filter mechanism.

5. The pre-filter for manual-automatic rotary cleaning according to claim 2, characterized in that: the second rotating shaft comprises a rotating shaft seat, a rotating shaft body and a ratchet structure A arranged outside the rotating shaft body, the second rotating shaft is detachably connected with the supporting seat through the rotating shaft seat, the end part of the rotating shaft body protrudes out of the ratchet structure A, the second rotating connecting mechanism is a ratchet structure B, and through the matching of the ratchet structure A and the ratchet structure B, the scraping and washing framework synchronously rotates along with the reverse water flow direction under the driving of external force of the pollution discharge assembly.

6. The pre-filter for manual-automatic rotary cleaning according to claim 1, 2, 3, 4 or 5, characterized in that: the scraping and washing framework comprises at least two scraping and washing rods, and fins or ribs are arranged between the scraping and washing rods.

7. The pre-filter for manual-automatic rotary cleaning according to claim 6, wherein: the scraping and washing device is characterized in that fins are arranged between the scraping and washing rods, are spiral and are arranged in a parallel and staggered mode.

8. The pre-filter for manual-automatic rotary cleaning according to claim 6, wherein: scrape and wash pole outside axial and be equipped with the mounting groove, be equipped with the mounting hole in the mounting groove, scrape and wash the piece and include fixed part, base member and scrape the piece of washing, fixed part and mounting hole adaptation, base member and mounting groove adaptation scrape the piece and wash the slope of skeleton direction of rotation and set up against scraping.

9. The pre-filter for manual-automatic rotary cleaning according to claim 6, wherein: scrape and wash the inboard axial of pole and be equipped with the mounting groove, be equipped with the fixed part in the mounting groove, scrape and wash the piece and include mounting hole, base member and scrape and wash the piece, fixed part and mounting hole adaptation, base member and mounting groove adaptation scrape and wash the piece and lean on scraping and wash the slope of skeleton direction of rotation and set up.

10. The pre-filter for manual-automatic rotary cleaning according to claim 6, wherein: the scraping and washing rod is further axially provided with at least one siphon channel, and the siphon channel is provided with a matched siphon part.

11. The pre-filter for manual-automatic rotary cleaning according to claim 1, 2, 3, 4 or 5, characterized in that: the abutting part of the pollutant containing cavity is provided with an annular groove, and an elastic element capable of increasing the friction force between the abutting part and the inner wall of the filter flask is arranged in the annular groove.

12. The pre-filter for automated manual spin-on cleaning of claim 11, further comprising: the elastic element is an O-shaped sealing ring.

13. The pre-filter for manual-automatic rotary cleaning according to claim 1, 2, 3, 4 or 5, characterized in that: the direct flushing drainage channel A is provided with at least 2, the direct flushing drainage channel B is provided with 2, the direct flushing drainage channel C matched with the direct flushing drainage channel B is provided with 2, and the lug moves in the matching groove and can be communicated or disconnected with the two direct flushing drainage channels B and the direct flushing drainage channel C simultaneously.

14. The pre-filter for manual-automatic rotary cleaning according to claim 1, 2, 3, 4 or 5, characterized in that: the matching groove and the lug are respectively provided with two.

15. The pre-filter for manual-automatic rotary cleaning according to claim 1, 2, 3, 4 or 5, characterized in that: the sewage discharge control part is axially clamped with the bottom end of the sewage holding cavity.

16. The pre-filter for manual-automatic rotary cleaning according to claim 1, 2, 3, 4 or 5, characterized in that: the assembly part is provided with a sealing groove, a sealing ring is arranged in the sealing groove, and the assembly part is in interference fit sealing connection with the inner wall of the assembly cavity through the sealing ring.

17. The pre-filter for manual-automatic rotary cleaning according to claim 1, 2, 3, 4 or 5, characterized in that: and a control valve is fixedly arranged at the outer end of the assembling part.

18. The pre-filter for manual-automatic rotary cleaning according to claim 4, wherein: the assembly part is provided with a sealing groove, a sealing ring is arranged in the sealing groove, the assembly part is in interference fit and sealing connection with the inner wall of the assembly cavity through the sealing ring, and when the pollution discharge assembly is opened for pollution discharge, the assembly part can axially move upwards relative to the assembly cavity under the action of external force to a second rotating connection structure to be linked with a second rotating shaft, the pollution discharge assembly is rotated to synchronously rotate the scraping framework, so that manual scraping is realized; the blowdown is ended, closes the blowdown subassembly, and under the exogenic action, the relative assembly chamber of assembly portion can the axial move down to second rotation connection structure and second pivot off-state, scrapes and washes the subassembly and rotate along with the rivers under the rivers impact, realizes self-cleaning.

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