CN217247055U - Filter for open circulating water system of steam turbine of thermal power plant - Google Patents

Abstract

A filter for an open circulating water system of a steam turbine of a thermal power plant relates to the field of equipment manufacturing of the thermal power plant. The filter comprises a filter box, a water inlet pipe, a water outlet pipe and a collecting device. The water inlet pipe and the water outlet pipe are respectively arranged at two ends of the filter box, a filter screen is arranged on the inner wall surface of the filter box, the filter screen at least completely fills the water outlet, a rotating shaft, a rotating roller and a filter residue scraper blade are also arranged in the filter box, the filter residue scraper blade is arranged on the rotating roller, the rotating roller is arranged on the surface of the rotating shaft and used for enabling the filter residue scraper blade to rotate around the rotating shaft, and one end of the filter residue scraper blade, far away from the rotating shaft, is selectively in sliding contact with the filter screen; the collecting device is connected with the filter box so that filter residues in the filter box are discharged into the collecting device. Through filter residue scraper blade and filter screen selective sliding contact for the filter residue can be scraped down by the filter residue scraper blade and flow into collection device in, avoided the long-time jam that leads to of filter use, influence rivers flow, need not regularly change simultaneously and clear up the filter screen, improved the filter effect.

Description

Filter for open circulating water system of steam turbine of thermal power plant

Technical Field

The utility model relates to a thermal power plant equipment field of making particularly, relates to a filter for steam turbine open circulating water system of thermal power plant.

Background

The filter is mainly used for filtering impurities in the steam turbine open circulating water system of the thermal power plant, and prevents water flow pipelines from being blocked due to carrying of the impurities in water flow, so that mechanical equipment faults are caused, and the working efficiency is influenced.

At present, open circulating water system of steam turbine of thermal power plant uses filter is at long-time filterable in-process, the filter screen of filter can the adhesion impurity such as filter residue, make the discharge of filter screen reduce, influence taking at water source, in order to guarantee the filter effect of filter screen, need regularly change or clear up the filter screen of filter, but current filter structure is complicated, the installation, it is convenient inadequately to dismantle, regularly change the filter screen also can increase use cost and workman's work load, thereby the labor cost has been increased, and the filtering efficiency is reduced.

In view of this, the utility model is especially provided.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a steam turbine of thermal power plant is filter for open circulating water system, it can strike off the filter residue, prevents that the filter screen from blockking up.

The embodiment of the utility model is realized like this:

the utility model provides a first aspect, the utility model provides a filter for open circulating water system of steam turbine of thermal power plant, including rose box, inlet tube, outlet pipe and collection device.

The filter box is internally provided with a rotating shaft, a rotating roller and a filter residue scraper blade, the filter residue scraper blade is arranged on the rotating roller, the rotating roller is arranged on the surface of the rotating shaft and used for rotating the filter residue scraper blade around the rotating shaft, and one end of the filter residue scraper blade, which is far away from the rotating shaft, is selectively in sliding contact with the filter screen; the collecting device is connected with the filter box, and the connecting position is a filter residue outlet, so that filter residues in the filter box are discharged into the collecting device.

At present, open circulating water system of steam turbine of thermal power plant uses filter is at long-time filterable in-process, the filter screen of filter can the adhesion impurity such as filter residue, make the discharge of filter screen reduce, influence taking at water source, in order to guarantee the filter effect of filter screen, need regularly change or clear up the filter screen of filter, but current filter structure is complicated, the installation, it is convenient inadequately to dismantle, regularly change the filter screen also can increase use cost and workman's work load, thereby the labor cost has been increased, and the filtering efficiency is reduced. The utility model discloses a set up the filter residue scraper blade, make rivers get into the rose box from the inlet tube in, rivers drive the filter residue scraper blade and rotate, through filter residue scraper blade and the selective sliding contact of filter screen, the filter residue scraper blade can scrape the filter residue on the filter screen, in the filter residue inflow collection device that scrapes, avoided the long-time jam that leads to of using of filter, influence rivers flow, simultaneously because the filter residue scraper blade continuously keeps scraping the filter screen, the filter screen can keep better filter effect for a long time, the drawback of periodic replacement and clearance filter screen has been avoided, the filter effect of filter screen is improved.

In an alternative embodiment, the filter box is cylindrical in shape in order to ensure that the residue scraper can continuously scrape off the residue on the filter screen.

In an optional embodiment, in order to ensure a better filter residue scraping effect, 4-8 filter residue scraping plates are arranged on the rotating roller and are uniformly distributed on the rotating roller at intervals.

In an optional embodiment, the filter screen is installed by bypassing the inner wall surface of the filter box, the filter screen is not installed at the water inlet in order to ensure that the water inflow of the filter is continuous and stable, and the filter screen is not installed at the position of the filter residue outlet in order to ensure that the filter residue can be smoothly discharged.

In other embodiments, when the water inflow of the filter is smaller, the filter screen can be installed at the water inlet, and the utility model discloses do not limit to this.

In an alternative embodiment, the position of the water inlet pipe is higher than that of the water outlet pipe, and the water inlet of the filter box is inclined along one end far away from the collecting device, so that the inlet water flow impacts the residue filtering scraper to drive the rotating roller to rotate.

The flow direction of water flow in the filter box can be controlled through the inclined direction of the water inlet, so that under the condition of not adding other external forces, the filter residue scraper blade is driven to rotate only by the power of the water flow, the scraping of filter residues is realized, and the operation process of the filter is more convenient.

In an optional implementation mode, in order to facilitate observation of the collection condition of the filter residue and determine whether the filter needs to discharge the filter residue, the surface of the collection device is provided with an observation port, the observation port is a transparent observation port, and the transparent observation port is provided with scales for observing the collection condition of the filter residue.

In some embodiments, the viewing port is disposed on the central axis of the collection device, and in other embodiments, the viewing port can be disposed at other locations on the surface of the collection device.

In some embodiments, the length of the viewing port extends to the residue outlet along the bottom of the collection device, and in other embodiments, the length of the viewing port can also be shortened as long as one end of the viewing port extends to the residue outlet and the other end is located at a specific position.

In an optional embodiment, in order to prevent the filter from being blocked due to excessive filter residues collected by the collecting device, a drain pipe is further arranged at one end of the collecting device, which is far away from the filter box, and a drain valve is mounted on the drain pipe and used for discharging the filter residues in the collecting device.

In some embodiments, the blow off pipe can set up in collection device's bottom, and in other embodiments, the blow off pipe also can set up in collection device's side bottom surface, as long as can discharge the filter residue can, the concrete mounted position of blow off pipe the utility model discloses do not do the restriction.

In an optional embodiment, the filter residue collection device further comprises a filter residue ejection mechanism, wherein the filter residue ejection mechanism comprises a fixed seat, an angle adjusting mechanism and a filter residue collection elastic plate.

Wherein, the fixing base is installed in collection device's internal face, and the filter residue is collected the diving board and is passed through the fixing base and fix between collection device and rose box, and the filter residue is collected the one end that the diving board kept away from the fixing base and is stretched into in the rose box, with the selective sliding contact of filter residue scraper blade.

The angle adjusting mechanism is located between the fixing base and the filter box and comprises an adjusting portion and a connecting portion, the connecting portion are installed on the filter residue collecting elastic plate, one end of the adjusting portion is fixed to the inner wall face of the collecting device, and the other end opposite to the connecting portion is connected with the connecting portion, so that the position of the filter residue collecting elastic plate can be selectively fixed.

Through the length adjustment filter residue collection elastic plate who adjusts regulating part and the contained angle between the collection device internal face to the contact point between adjustment filter residue collection elastic plate and the filter residue scraper blade is with the not unidimensional filter residue scraper blade of contact.

In an alternative embodiment, the end of the residue collecting spring plate selectively contactable with the residue scraper is further provided with a residue scraping portion having at least one concave surface facing in a direction opposite to the rotation direction of the rotation shaft.

The concave surface orientation of scraping sediment portion can make the pivot at the rotation in-process with the rotation direction of pivot is opposite, and the filter residue scraper blade with scrape and form between the sediment portion and resist, the filter residue scraper blade continue to rotate and increase and scrape the resistance of sediment portion, finally scrape the contact point of sediment portion and filter residue scraper blade and disappear, the filter residue scraper blade receives the effect of the power of resisting before and produces small resilience, further gets rid of the filter residue on filter residue scraper blade surface.

In an optional embodiment, the connecting part is fixedly installed in the middle of the filter residue collecting elastic plate, and the adjusting part is installed in the horizontal direction, so that a stable triangular area is formed among the adjusting part, the filter residue collecting elastic plate and the fixing part, and the position of the filter residue collecting elastic plate is better fixed.

In some embodiments, the filter residue collecting spring plate is a spring plate in order to ensure that the contact between the filter residue collecting spring plate and the filter residue scraper is resisted without damaging the structure of the filter residue collecting spring plate or the filter residue scraper.

In an alternative embodiment, the adjusting portion is a threaded adjusting portion and includes a threaded sleeve and a threaded rod, one end of the threaded rod is installed in the threaded sleeve, the other opposite end is installed on the connecting portion, and one end of the threaded sleeve, which is far away from the threaded rod, is installed on the inner wall surface of the collecting device.

In optional implementation mode, the utility model discloses a length of cooperation adjustment regulating part between threaded sleeve and the threaded rod, and then adjust the filter residue and collect the contained angle between diving board and the collection device internal face to change the filter residue and collect the contact point between diving board and the filter residue scraper blade, with the filter residue of getting rid of not unidimensional filter residue scraper blade surface.

The embodiment of the utility model provides a beneficial effect is:

the utility model provides a steam turbine of thermal power plant open filter for circulating water system, rivers get into the rose box from the inlet tube in, rivers drive the filter residue scraper blade and rotate, through filter residue scraper blade and filter screen alternative sliding contact, make the filter residue scraper blade can scrape the filter residue on the filter screen down, the filter residue of scraping flows in the collection device, the jam that the long-time use of filter leads to has been avoided, influence the rivers flow, simultaneously because the filter residue scraper blade continuously keeps scraping the filter screen, the filter screen can keep better filter effect for a long time, the drawback of periodic replacement and clearance filter screen has been avoided, the filter effect of filter screen is improved.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention, and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.

Fig. 1 is a perspective view of an external structure of a filter for an open circulating water system of a steam turbine of a thermal power plant according to a first embodiment of the present invention;

fig. 2 is a sectional view of an internal structure of a filter for an open circulation water system of a steam turbine of a thermal power plant according to a first embodiment of the present invention;

FIG. 3 is an enlarged view of the structure A of FIG. 2 according to the present invention;

fig. 4 is a plan view of an external structure of a filter for an open circulation water system of a steam turbine in a thermal power plant according to a first embodiment of the present invention;

fig. 5 is a schematic structural diagram of an adjusting portion according to a first embodiment of the present invention.

The icon is 100-a filter for an open circulating water system of a steam turbine of a thermal power plant; 110-a filter tank; 111-a filter screen; 112-residue scraper blade; 113-a turning roll; 114-a rotating shaft; 120-water inlet pipe; 121-a water inlet; 130-a water outlet pipe; 131-water outlet; 140-a collecting device; 141-filter residue outlet; 142-a viewing port; 143-a sewage draining pipe; 144-a blow-down valve; 151-a fixed seat; 152-filtering residue collecting spring plate; 153-slag scraping part; 154-a connecting portion; 155-a threaded sleeve; 156-a threaded rod; 200-connecting flange.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. The components of embodiments of the present invention, as generally described and illustrated in the figures herein, may be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the present invention, presented in the accompanying drawings, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate the position or positional relationship based on the position or positional relationship shown in the drawings, or the position or positional relationship which is usually placed when the product of the present invention is used, and are only for convenience of description and simplification of the description, but do not indicate or imply that the device or element referred to must have a specific position, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," "third," and the like are used solely to distinguish one from another and are not to be construed as indicating or implying relative importance.

Furthermore, the terms "horizontal", "vertical" and the like do not imply that the components are required to be absolutely horizontal or pendant, but rather may be slightly inclined. For example, "horizontal" merely means that the direction is more horizontal than "vertical" and does not mean that the structure must be perfectly horizontal, but may be slightly inclined.

In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

First embodiment

Referring to fig. 1 and fig. 2, the present embodiment provides a filter 100 for an open circulating water system of a steam turbine of a thermal power plant, including a filter box 110, a water inlet pipe 120, a water outlet pipe 130, a collecting device 140, and a residue ejecting mechanism.

The filtering box 110 is a cylindrical casing, and includes a filtering net 111, a residue scraper 112, a rotating roller 113 and a rotating shaft 114.

In this embodiment, the water inlet pipe 120 and the water outlet pipe 130 are respectively disposed at the left and right ends of the filter tank 110, and are connected to an external pipeline through the connection flange 200. In other embodiments, the positions of the water inlet pipe 120 and the water outlet pipe 130 may be set at other positions as long as the requirements of water inlet and water outlet can be met, and the present invention is not limited by the specific positions.

Referring to fig. 2, a water inlet 121 is formed at a communication position between the filter box 110 and the water inlet pipe 120, a water outlet 131 is formed at a communication position between the filter box 110 and the water outlet pipe 130, the filter screen 111 is installed on an inner wall surface of the filter box 110, and the filter screen 111 is at least completely filled on a surface of the water outlet 131.

The collecting device 140 is connected to the filter tank 110 at a residue outlet 141 for discharging the residue in the filter tank 110 into the collecting device 140.

In this embodiment, the filter screen 111 is installed to bypass the inner wall surface of the filter box 110, and the filter screen 111 is not installed to the inlet 121 in order to ensure the water inflow of the filter to be continuous and stable, and the filter screen 111 is not installed to the residue outlet 141 in order to smoothly discharge the residue.

In other embodiments, when the water inlet amount of the filter is small, the filter screen 111 may be installed at the water inlet 121, which is not limited by the present invention.

Further, a rotating shaft 114 is installed at the center of the filtering box 110, a rotating roller 113 is installed on the surface of the rotating shaft 114, a residue scraper 112 is installed on the rotating roller 113, and one end of the residue scraper 112 far away from the rotating shaft 114 is selectively in sliding contact with the filtering net 111.

When the rotating roller 113 rotates around the rotating shaft 114, the rotating roller 113 drives the residue scraper 112 to rotate, and one end of the residue scraper 112, which is far away from the rotating shaft 114, is selectively in sliding contact with the filter screen 111 for scraping the residue on the filter screen 111 to prevent the filter screen 111 from being blocked.

In this embodiment, in order to ensure a better residue scraping effect, the number of residue scrapers 112 is 6, and the residue scrapers are all mounted on the rotating roller 113 and are uniformly distributed on the rotating roller 113 at intervals. In other embodiments, the number of reject scrapers 112 may also be 4, 5, 7 or 8.

In this embodiment, the inlet pipe 120 is located higher than the outlet pipe 130, and the inlet 121 of the filter box 110 is inclined along an end away from the collecting device 140, so that the inlet water flow impacts the residue scraper 112 to rotate the rotating roller 113.

The flow direction of water flow in the filter box 110 can be controlled through the inclined direction of the water inlet 121, so that under the condition of not adding other external force, the filter residue scraper 112 is driven to rotate only by the power of the water flow, the scraping of filter residues is realized, and the operation process of the filter is more convenient.

Referring to fig. 4, in the present embodiment, in order to facilitate observing the collection condition of the filter residue, so as to determine whether the filter needs to discharge the filter residue, an observation port 142 is disposed on the surface of the collection device 140, the observation port 142 is a transparent observation port 142, and scales are disposed on the transparent observation port 142 for observing the collection condition of the filter residue.

In the present embodiment, the viewing port 142 is disposed on the central axis of the collecting device 140, and in other embodiments, the viewing port 142 may be disposed at other positions on the surface of the collecting device 140.

In this embodiment, the length of the observation port 142 extends to the residue outlet 141 along the bottom of the collecting device 140, and in other embodiments, the length of the observation port 142 can be shortened as long as one end thereof extends to the residue outlet 141, and the other end is located at a specific position.

In this embodiment, in order to prevent the filter from being blocked by the excessive filter residues collected by the collecting device 140, a drain pipe 143 is further disposed at an end of the collecting device 140 away from the filter tank 110, and a drain valve 144 is installed on the drain pipe 143 for draining the filter residues in the collecting device 140.

In this embodiment, blow off pipe 143 can set up in collection device 140's bottom, and in other embodiments, blow off pipe 143 also can set up in collection device 140's side bottom surface, as long as can discharge the filter residue can, blow off pipe 143's specific mounted position the utility model discloses do not do the restriction.

Referring to fig. 3, in the present embodiment, the residue ejecting mechanism includes a fixing base 151, an angle adjusting mechanism, and a residue collecting elastic plate 152.

Referring to fig. 3 in conjunction with fig. 2, the fixing seat 151 is installed on an inner wall surface of the collecting device 140, the residue collecting elastic plate 152 is fixed between the collecting device 140 and the filtering box 110 through the fixing seat 151, and one end of the residue collecting elastic plate 152, which is far away from the fixing seat 151, extends into the filtering box 110 and is selectively in sliding contact with the residue scraper 112.

In this embodiment, a residue scraping portion 153 is further provided at an end of the residue collecting spring plate 152 selectively contactable with the residue scraper 112, and the residue scraping portion 153 has at least one concave surface facing in a direction opposite to the rotation direction of the rotation shaft 114. The concave surface of residue scraping portion 153 faces the direction opposite to the rotating direction of rotating shaft 114, so that resistance is formed between residue scraping plate 112 and residue scraping portion 153 during rotation of rotating shaft 114, residue scraping plate 112 continues to rotate to increase the resistance to residue scraping portion 153, finally, the contact point between residue scraping portion 153 and residue scraping plate 112 disappears, residue scraping plate 112 generates small rebound under the action of the previous resistance force, and residue on the surface of residue scraping plate 112 is further removed.

The angle adjusting mechanism is located between the fixing seat 151 and the filtering tank 110, the angle adjusting mechanism comprises an adjusting portion and a connecting portion 154, the connecting portion 154 is installed on the filter residue collecting elastic plate 152, one end of the adjusting portion is fixed on the inner wall surface of the collecting device 140, and the other opposite end is connected with the connecting portion 154, so that the position of the filter residue collecting elastic plate 152 can be selectively fixed.

In this embodiment, the connection portion 154 is fixedly installed at the middle portion of the residue collection spring plate 152, and the adjustment portion is installed along the horizontal direction, so that a stable triangular region is formed between the adjustment portion, the residue collection spring plate 152 and the fixing portion, and the position of the residue collection spring plate 152 is better fixed.

Referring to fig. 5, in the present embodiment, the adjusting portion is a threaded adjusting portion, and includes a threaded sleeve 155 and a threaded rod 156, one end of the threaded rod 156 is installed in the threaded sleeve 155, the other opposite end is installed on the connecting portion 154, and one end of the threaded sleeve 155 away from the threaded rod 156 is installed on an inner wall surface of the collecting device 140.

The length of the adjustment portion is adjusted by the fit between the threaded sleeve 155 and the threaded rod 156, and the included angle between the residue collection spring plate 152 and the inner wall surface of the collection device 140 is adjusted, so that the contact point between the residue collection spring plate 152 and the residue scraper 112 is changed, and the residue on the surface of the residue scraper 112 with different sizes is removed.

In this embodiment, the cake collecting spring plate 152 is an elastic plate in order to ensure that the contact process between the cake collecting spring plate 152 and the cake scraping plate 112 is resisted without damaging the structure of the cake collecting spring plate 152 or the cake scraping plate 112.

The filter 100 for the steam turbine open circulating water system of the thermal power plant provided by the embodiment has the following working principle:

water flows into filter box 110 from water inlet pipe 120 along the opening of inclined water inlet pipe 120, impact force of water impacts residue scraper 112 to drive residue scraper 112 to rotate anticlockwise, residue scraper 112 continuously scrapes residue on filter screen 111 in the rotation process, residue collected on residue scraper 112 drops into collection device 140 when residue scraper 112 rotates to residue outlet 141, residue scraper 112 continuously rotates to enable residue scraping portion 153 to contact residue scraper 112, resistance is formed between residue scraper 112 and residue scraping portion 153, residue scraper 112 continuously rotates to increase and scrape resistance of residue scraping portion 153, contact point of residue scraping portion 153 and residue scraper 112 finally disappears, residue scraper 112 generates tiny rebound under the action of force resisted before, and residue on the surface of residue scraper 112 is further removed. The height of the residue in the collection chamber is observed through the observation port 142, and when a certain amount of residue has accumulated, the drain valve 144 is opened to allow the residue to flow out of the collection device 140 and be discharged through the drain pipe 143.

The embodiment of the utility model provides a pair of filter 100 for steam turbine open circulating water system of thermal power plant, it has following advantage at least:

1) through setting up filter residue scraper blade 112, make rivers get into in rose box 110 from inlet tube 120, rivers drive filter residue scraper blade 112 and rotate, through filter residue scraper blade 112 and the selective sliding contact of filter screen 111, filter residue scraper blade 112 can scrape the filter residue on filter screen 111 down, the filter residue of scraping flows into in the collection device 140, the jam that the long-time use of filter leads to has been avoided, influence water flow, simultaneously because filter residue scraper blade 112 continuously keeps scraping filter screen 111, filter screen 111 can keep better filter effect for a long time, the drawback of periodic replacement with clearance filter screen 111 has been avoided, the filter effect of filter screen 111 is improved.

2) The length of the adjustment portion is adjusted by the fit between the threaded sleeve 155 and the threaded rod 156, and the included angle between the residue collection spring plate 152 and the inner wall surface of the collection device 140 is adjusted, so that the contact point between the residue collection spring plate 152 and the residue scraper 112 is changed, and the residue on the surface of the residue scraper 112 with different sizes is removed.

3) Through setting up viewing aperture 142 and being convenient for observe the filter residue content in collection device 140 to confirm the emission time of filter residue, open blowoff valve 144 again, discharge the filter residue from blow off pipe 143, it is convenient to slag tap, and does not influence the filter effect of filter.

The above is only a preferred embodiment of the present invention, and is not intended to limit the present invention, and various modifications and changes will occur to those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (10)

1. A filter for an open circulating water system of a steam turbine of a thermal power plant is characterized by comprising a filter box, a water inlet pipe, a water outlet pipe and a collecting device;

the water inlet pipe and the water outlet pipe are respectively arranged at two ends of the filter box, a water inlet is formed in the communication position of the filter box and the water inlet pipe, a water outlet is formed in the communication position of the filter box and the water outlet pipe, a filter screen is arranged on the inner wall surface of the filter box, the filter screen at least completely fills the water outlet, a rotating shaft, a rotating roller and a filter residue scraper blade are further arranged in the filter box, the filter residue scraper blade is arranged on the rotating roller, the rotating roller is arranged on the surface of the rotating shaft and used for enabling the filter residue scraper blade to rotate around the rotating shaft, and one end, far away from the rotating shaft, of the filter residue scraper blade is selectively in sliding contact with the filter screen; the collecting device is connected with the filter box, and the joint is a filter residue outlet, so that the filter residue in the filter box is discharged into the collecting device.

2. The filter according to claim 1, further comprising a residue ejection mechanism, wherein the residue ejection mechanism comprises a fixed seat, an angle adjustment mechanism and a residue collection elastic plate, the residue collection elastic plate is fixed on an inner wall surface of the collection device through the fixed seat, the angle adjustment mechanism is located between the fixed seat and the filter box, the angle adjustment mechanism comprises an adjustment portion and a connection portion, the connection portion is mounted on the residue collection elastic plate, one end of the adjustment portion is fixed on the inner wall surface of the collection device, and the other opposite end of the adjustment portion is fixedly connected with the residue collection elastic plate, so that the residue collection elastic plate is fixed in an inclined manner; the filter residue is collected the springboard and is kept away from the one end of fixing base with filter residue scraper blade optional sliding contact.

3. The filter of claim 2, wherein the end of the residue collection spring plate selectively contactable with the residue scraper is further provided with a residue scraping portion having at least one concave surface facing in a direction opposite to the rotation direction of the rotation shaft.

4. The filter of claim 2, wherein the connection part is fixedly installed at the middle part of the residue collection elastic plate, the adjustment part is installed in the horizontal direction, and the residue collection elastic plate is an elastic plate.

5. The filter of claim 4, wherein the adjustment portion is a threaded adjustment portion comprising a threaded sleeve and a threaded rod, the threaded rod being mounted at one end within the threaded sleeve and at an opposite end on the connection portion, the end of the threaded sleeve distal from the threaded rod being mounted to an inner wall surface of the collection device.

6. The filter of claim 1, wherein the filter box is cylindrical, and 4-8 filter residue scrapers are mounted on the rotating roller and are uniformly distributed on the rotating roller at intervals.

7. The filter of claim 6, wherein the filter screen is mounted around an inner wall surface of the filter box, and the filter screen is not mounted at the water inlet and the residue outlet.

8. The filter of claim 6, wherein the inlet pipe is positioned higher than the outlet pipe, and the inlet of the filter box is inclined along an end away from the collecting device, so that the inlet water flow impacts the residue scraper to rotate the rotating roller.

9. The filter of claim 1, wherein the surface of the collecting device is provided with a viewing port, the viewing port is a transparent viewing port, and the transparent viewing port is provided with scales for observing the collecting condition of the filter residues.

10. The filter of claim 9, wherein a drain pipe is further disposed at an end of the collecting device away from the filtering box, and a drain valve is mounted on the drain pipe and used for draining filter residues in the collecting device.

Images