CN212680281U

CN212680281U - Scraper filter

Info

Publication number: CN212680281U
Application number: CN202021716753.XU
Authority: CN
Inventors: 吕柏良; 李龙涛; 余胜; 杜健; 付奇
Original assignee: Guangzhou Hongshang Machinery Manufacturing Co ltd
Current assignee: Guangzhou Hongshang Machinery Manufacturing Co ltd
Priority date: 2020-08-17
Filing date: 2020-08-17
Publication date: 2021-03-12
Anticipated expiration: 2030-08-17

Abstract

The utility model discloses a scraper filter, scraper filter is including barrel, power impeller, cartridge filter and scraper blade, the barrel holds the chamber including first chamber and the second of holding, first chamber and the second of holding holds and is equipped with first through-hole between the chamber, power impeller sets up at first intracavity that holds, power impeller is including blade and rotating part, the cartridge filter setting holds the intracavity at the second, the cartridge filter is connected with first chamber that holds through first through-hole, the scraper blade setting is inboard at the cartridge filter, one end is connected with the rotating part, power impeller can drive the scraper blade when the pivoted and rotate the impurity that strikes off the cartridge filter section of thick bamboo wall. According to the utility model discloses a scraper filter, the scraper blade need not motor drive, can rotate when the feeding and strike off the impurity that attaches at the filter screen surface.

Description

Scraper filter

Technical Field

The utility model relates to a filter technical field especially relates to a scraper filter.

Background

In the new energy lithium battery industry, in order to achieve the coating uniformity and fluidity of lithium battery slurry and improve the quality of a positive electrode sheet and a negative electrode sheet of a lithium battery, a filter is required to be used for filtering the slurry in each slurry process step of slurry preparation, and agglomerated particles, insoluble matters, foreign matters and the like in the lithium battery slurry are removed. After the filter worked for a period of time, can deposit the impurity of a certain quantity on the filter screen, in order to prevent that too much impurity of deposit from causing the filter screen jam on the filter screen, the user need in time clean the filter screen. In the prior art, a motor and a scraper are generally arranged in a filter, and the scraper is driven by the motor to rotate to scrape off impurities attached to the surface of a filter screen. However, the provision of a motor in the filter not only increases the overall size of the filter, but also increases the maintenance cost of the filter.

SUMMERY OF THE UTILITY MODEL

The utility model discloses aim at solving one of the technical problem that exists among the prior art. Therefore, the utility model provides a scraper blade filter, the scraper blade need not motor drive, can rotate when the feeding and strike off the impurity that attaches at the filter screen surface.

According to the utility model discloses scraper blade filter of first aspect embodiment includes: the barrel is provided with a first accommodating cavity and a second accommodating cavity, the first accommodating cavity is provided with a feed inlet, the second accommodating cavity is provided with a discharge outlet, and a first through hole is formed between the first accommodating cavity and the second accommodating cavity; the power impeller is arranged in the first accommodating cavity; the filter cartridge is arranged in the second accommodating cavity, and the first accommodating cavity is communicated with the interior of the filter cartridge through the first through hole; the scraper blade, the scraper blade sets up in the cartridge filter, and with the contact of cartridge filter inner wall, the scraper blade with power impeller connects, power impeller is used for the drive the scraper blade rotates.

According to the utility model discloses scraper filter has following technological effect at least: the scraper filter can be driven by a motor or other external driving devices to push the power impeller to rotate through slurry while feeding, and then the scraper is driven to rotate to scrape impurities attached to the wall of the filter cylinder. Specifically, the slurry flows in the filter in the following route: during thick liquids enter into first chamber of holding from the feed inlet earlier, promote power impeller and rotate to first through-hole department along with power impeller rotates, then thick liquids enter into the cartridge filter from first through-hole department again, and thick liquids pass the cartridge filter and enter into the second and hold the chamber after entering the cartridge filter, discharge from the discharge gate department at last, and impurity in the thick liquids is then stayed in the cartridge filter. Because the scraper blade is connected with the rotating part, when slurry enters the filter and pushes the power impeller to rotate, the scraper blade can rotate along with the rotating part together, and impurities attached to the wall of the filter cylinder are scraped. Compared with the traditional filter which uses a motor to drive the scraper to rotate, the scraper filter in the scheme has smaller overall size, and is more convenient for workers to operate or clean the scraper filter; the scraper filter in the scheme also saves a motor and a control part of the motor, and reduces the manufacturing cost and the maintenance cost of the whole machine.

According to some embodiments of the utility model, the barrel still holds the chamber including the third, the third holds the chamber setting and is in the second holds the below in chamber, the second hold the chamber with the third holds and is equipped with the second through-hole between the chamber, the cartridge filter passes through the second through-hole with the third holds the chamber intercommunication.

According to some embodiments of the utility model, still be equipped with the drain on the third holds the chamber.

According to the utility model discloses a some embodiments still include scraper shaft and scraper bearing, scraper bearing sets up in the barrel, scraper shaft one end with power impeller connects, the other end with scraper bearing rotates to be connected, the scraper blade sets up scraper shaft is last.

According to some embodiments of the invention, the material of the scraper bearing is ceramic.

According to some embodiments of the invention, the power impeller comprises a rotating part and blades, the blades being inclined and arranged uniformly on a surface of the rotating part.

According to some embodiments of the utility model, the feed inlet is followed power impeller's tangential direction sets up.

According to some embodiments of the utility model, first through-hole setting is in first chamber bottom portion of holding is kept away from one side of feed inlet.

According to some embodiments of the invention, the discharge gate sets up the second holds the bottom in chamber.

According to the utility model discloses a some embodiments still include the manometer, the manometer is used for detecting barrel internal pressure.

Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.

Drawings

The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:

fig. 1 is a schematic structural view of a scraper filter according to an embodiment of the present invention;

fig. 2 is a schematic structural view of a first accommodating chamber in a scraper filter according to an embodiment of the present invention.

Reference numerals:

the barrel 100, the first accommodating cavity 110, the feed inlet 111, the second accommodating cavity 120, the discharge hole 121, the first through hole 130, the third accommodating cavity 140, the sewage discharge outlet 141, the second through hole 150, the power impeller 200, the blade 210, the rotating part 220, the filter cartridge 300, the scraper 410, the scraper shaft 420, the scraper bearing 430 and the pressure gauge 500.

Detailed Description

Reference will now be made in detail to the embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the drawings are exemplary only for the purpose of explaining the present invention, and should not be construed as limiting the present invention.

In the description of the present invention, it should be understood that the orientation or positional relationship indicated with respect to the orientation description, such as up, down, front, rear, left, right, etc., is based on the orientation or positional relationship shown in the drawings, and is only for convenience of description and simplification of description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.

In the description of the present invention, if there are first and second descriptions for distinguishing technical features, they are not to be understood as indicating or implying relative importance or implicitly indicating the number of indicated technical features or implicitly indicating the precedence of the indicated technical features.

In the description of the present invention, unless there is an explicit limitation, the words such as setting, installation, connection, etc. should be understood in a broad sense, and those skilled in the art can reasonably determine the specific meanings of the above words in combination with the specific contents of the technical solution.

A scraper filter according to an embodiment of the present invention is described below with reference to fig. 1 to 2.

For example, as shown in fig. 1 to 2, a scraper filter according to an embodiment of the present invention includes: the cylinder body 100, the cylinder body 100 is provided with a first containing cavity 110 and a second containing cavity 120, the first containing cavity 110 is provided with a feed inlet 111, the second containing cavity 120 is provided with a discharge outlet 121, and a first through hole 130 is arranged between the first containing cavity 110 and the second containing cavity 120; a power impeller 200, the power impeller 200 being disposed in the first receiving chamber 110; a filter cartridge 300, the filter cartridge 300 being disposed in the second receiving chamber 120, the first receiving chamber 110 being communicated with the inside of the filter cartridge 300 through the first through hole 130; the scraper 410 is arranged in the filter cylinder 300 and is in contact with the inner wall of the filter cylinder 300, the scraper 410 is connected with the power impeller 200, and the power impeller 200 is used for driving the scraper 410 to rotate.

As shown in fig. 1 to 2, the scraper filter includes a cylinder 100, a power impeller 200, a filter cartridge 300 and a scraper 410, the cylinder 100 includes a first accommodating chamber 110 and a second accommodating chamber 120, the first accommodating chamber 110 is disposed above the second accommodating chamber 120, the first accommodating chamber 110 is provided with a feed inlet 111, the second accommodating chamber 120 is provided with a discharge outlet 121, and a first through hole 130 is disposed between the first accommodating chamber 110 and the second accommodating chamber 120. The power impeller 200 includes blades 210 and a rotating part 220, the blades 210 are uniformly arranged on the surface of the rotating part 220 at a certain interval, and the rotating part 220 is arranged at the center of the first accommodating chamber 110. The filter cartridge 300 is disposed in the second accommodating chamber 120, and both ends of the filter cartridge 300 are respectively in contact with the upper end of the second accommodating chamber 120 and the lower end of the second accommodating chamber 120, and the first through hole 130 is disposed at a position where the blade 210 coincides with the projection of the filter cartridge 300 in the vertical direction, so as to communicate the filter cartridge 300 with the first accommodating chamber 110. The scraper 410 is disposed in the filter cartridge 300 and contacts with the wall of the filter cartridge 300, and one end of the scraper 410 is connected to the rotating part 220 and can rotate together with the rotating part 220. When the filter works, slurry enters the first accommodating cavity 110 from the feed inlet 111, then the blade 210 in the first accommodating cavity 110 is pushed to drive the rotating part 220 to rotate, when the slurry rotates to the first through hole 130 along with the blade 210, the slurry enters the filter cylinder 300 through the first through hole 130, after entering the filter cylinder 300, the slurry continues to pass through the filter cylinder 300 and enters the second accommodating cavity 120, and finally the slurry is discharged through the discharge hole 121, and impurities in the slurry are left in the filter screen. The rotating portion 220 drives the scraper 410 to rotate together during the rotation, and the scraper 410 scrapes off impurities attached to the wall of the filter cartridge 300 during the rotation.

According to the utility model discloses scraper filter, scraper filter can drive scraper blade 410 in the feeding and rotate, strikes off the impurity that attaches on cartridge filter 300 section of thick bamboo wall to make cartridge filter 300 keep unobstructed, prevent to take place to block up. Specifically, the scraper 410 is connected to the power impeller 200, and when slurry enters from the inlet 111 and pushes the power impeller 200, the power impeller 200 drives the scraper 410 to rotate together, so as to achieve the effect of removing impurities from the wall of the filter cartridge 300. Compared with the traditional filter which uses a motor to drive the scraper blade 410 to rotate, the scraper blade filter in the scheme has smaller overall size, and is more convenient for workers to operate or clean the scraper blade filter; the scraper filter in the scheme also saves a motor and a control part of the motor, and reduces the manufacturing cost and the maintenance cost of the whole machine.

In some embodiments of the present invention, the cylinder 100 further includes a third accommodating chamber 140, the third accommodating chamber 140 is disposed below the second accommodating chamber 120, a second through hole 150 is disposed between the second accommodating chamber 120 and the third accommodating chamber 140, and the filter cartridge 300 is communicated with the third accommodating chamber 140 through the second through hole 150. For example, as shown in fig. 1, in addition to the first accommodating chamber 110 and the second accommodating chamber 120, the cylinder 100 further includes a third accommodating chamber 140 disposed below the second accommodating chamber 120, a second through hole 150 is disposed between the third accommodating chamber 140 and the second accommodating chamber 120, the second through hole 150 is disposed at a position where the filter cartridge 300 coincides with a vertical projection of the third accommodating chamber 140, and a lower end of the filter cartridge 300 contacts with a lower end of the second accommodating chamber 120 and communicates with the third accommodating chamber 140 through the second through hole 150. Through the third chamber 140 that holds that sets up with cartridge filter 300 intercommunication, can prolong the live time of scraper filter effectively and improve filtration efficiency. Specifically, after the scraper filter is used for a certain period of time, impurities in the filter cartridge 300 are gradually accumulated. When the impurities in the filter cartridge 300 are accumulated to a certain value, the filtering efficiency of the scraper filter is reduced, and at this time, the user needs to manually clean the scraper filter to discharge the accumulated impurities in the filter cartridge 300. At this time, a third accommodating chamber 140 communicating with the filter cartridge 300 is disposed below the cylinder 100, when the scraper 410 scrapes off impurities on the wall of the filter cartridge 300, the impurities are settled into the third accommodating chamber 140 through the second through holes 150, and when the third accommodating chamber 140 is filled with impurities, the impurities are accumulated in the filter network, which effectively prolongs the service life of the scraper filter compared with a scraper filter without the third accommodating chamber 140.

In a further embodiment of the present invention, a drain port 141 is further disposed on the third accommodating chamber 140. For example, as shown in fig. 2, a drain port 141 is provided at the bottom of the third receiving chamber 140. Through set up drain 141 in the bottom that holds chamber 140 at the third, after the third holds full impurity in the chamber 140, the user alright discharge the impurity that holds in the chamber 140 with the third through drain 141, convenience when having improved the scraper filter and using.

In some embodiments of the present invention, further include a scraper shaft 420 and a scraper bearing 430, the scraper bearing 430 is disposed in the barrel 100, one end of the scraper shaft 420 is connected to the power impeller 200, the other end of the scraper shaft is rotatably connected to the scraper bearing 430, and the scraper 410 is disposed on the scraper shaft 420. For example, as shown in fig. 1, the blade bearing 430 is disposed in the middle of the second through hole 150, one end of the blade bearing 430 is connected to the rotating portion 220, the other end is rotatably connected to the blade bearing 430, and both ends of the blade 410 are respectively connected to the blade shaft 420. Through setting up as above, can drive scraper blade 410 upper and lower both ends and rotate jointly when scraping the board axle 420 and rotating, compare the mode that scraper blade 410 one end is connected with rotating part 220, scraper blade 410 can evenly atress at upper and lower both ends when rotating, has prevented that stress concentration from having prolonged scraper blade 410's life effectively.

In a further embodiment of the present invention, the material of the scraper bearing 430 is ceramic. The conventional blade bearing 430 is generally iron, and the iron blade bearing 430 is soaked in slurry for a long time during operation and gradually corrodes along with the soaking. The iron blade bearing 430 is corroded to slowly penetrate into the slurry to pollute the slurry, and the durability is gradually reduced. The ceramic has high hardness with good corrosion resistance, and the scraper bearing 430 made of the ceramic is adopted, so that the service life of the scraper bearing 430 is effectively prolonged while the scraper bearing 430 is prevented from being corroded to pollute slurry.

In some embodiments of the present invention, the power impeller 200 includes a rotating portion 220 and blades 210, and the blades 210 are disposed on a surface of the rotating portion 220 in an inclined and uniform manner. For example, as shown in fig. 1 and 2, each of the blades 210 is disposed on the rotation part 220 to be inclined at a certain angle. By arranging the blades 210 on the rotating portion 220 in an inclined manner, when slurry enters the first accommodating chamber 110 from the feed port 111, the power impeller 200 can be driven to rotate with a smaller force, that is, the slurry can be driven to rotate with a smaller flow rate.

In some embodiments of the present invention, the feed port 111 is disposed along a tangential direction of the power impeller 200. For example, as shown in fig. 2, the feed port 111 is provided in a tangential direction of the power impeller 200. Through setting up feed inlet 111 on power impeller 200's tangential direction, just can directly contact with blade 210 during thick liquids feeding to promote blade 210 to drive rotating part 220 and rotate, set up the feed inlet 111 at power blade 210 tangential direction than not, reduced the momentum loss of thick liquids when getting into first chamber 110 that holds effectively, let thick liquids promote power impeller 200 to rotate smoothly.

In some embodiments of the present invention, the first through hole 130 is disposed at a side of the bottom of the first accommodating chamber 110 away from the feeding hole 111. For example, as shown in fig. 2, the first through holes 130 are provided in two and are provided at a side away from the feed opening 111. The first receiving chamber 110 can be divided into three regions according to the flow direction of the slurry in the first receiving chamber 110: a loading area of the vane 210 between the feed opening 111 and the first through hole 130, a loading area at the first through hole 130, and an unloading area of the vane 210 between the first through hole 130 and the feed opening 111. By disposing the first through hole 130 at a side away from the feed port 111, the power impeller 200 can be driven to rotate at a small flow rate. Specifically, when the first through hole 130 is disposed at the front end of the feeding hole 111 in the clockwise direction, the material carrying area of the blade 210 is too small, and the idle area of the blade 210 is too large, the kinetic energy in the slurry is not completely converted into the kinetic energy of the power impeller 200, and then enters the filter cartridge 300 from the first through hole 130, and at this time, the slurry needs to be injected at a large flow rate to maintain the normal rotation of the power impeller 200; when the first through hole 130 is arranged at the rear end of the feed port 111 in the clockwise direction, the no-load area of the blade 210 is too small, and the material-carrying area of the blade 210 is too large, the kinetic energy in the slurry is completely converted into the kinetic energy of the power impeller 200 and does not reach the position of the first through hole 130, at this time, the power impeller 200 is required to drive the slurry behind the material-carrying area of the blade 210 to move, that is, the slurry needs to be injected at a relatively large flow rate, so that the slurry pushes the slurry behind the material-carrying area of the power impeller 200 and the blade 210, so as to maintain the normal rotation of the power impeller 200. The first through hole 130 is arranged at one side far away from the feeding hole 111, the material carrying area of the blade 210 and the no-load area of the blade 210 have enough length, the slurry can convert most of kinetic energy into the kinetic energy of the power impeller 200 in the process of passing through the material carrying area of the blade 210, the newly injected slurry only needs to push the power impeller 200 to rotate, the slurry behind the material carrying area of the blade 210 does not need to be pushed, and the slurry only needs to be driven by a small flow rate to normally work by the power impeller 200.

In some embodiments of the present invention, the discharge hole 121 is disposed at the bottom of the second accommodating chamber 120. For example, as shown in fig. 1. When the third accommodating cavity 140 is arranged below the second accommodating cavity 120, the discharge port 121 is arranged at the position close to the bottom of the side surface of the second accommodating cavity 120, when the third accommodating cavity 140 is not arranged below the second accommodating cavity 120, the discharge port 121 can be directly arranged at the bottom of the second accommodating cavity 120, and the discharge port 121 is arranged at the bottom of the second accommodating cavity 120, so that the filtered slurry in the second accommodating cavity 120 can be completely discharged during discharging of the scraper filter.

In some embodiments of the present invention, a pressure gauge 500 is further included, and the pressure gauge 500 is used for detecting the internal pressure of the cylinder 100. For example, as shown in fig. 1, the pressure gauge 500 is disposed above the cartridge body 100, when excessive impurities are accumulated in the filter cartridge 300 or the third receiving chamber 140, the pressure inside the cartridge body 100 increases, and the pressure gauge 500 gives an alarm when detecting the increase in pressure, so that the user can discharge the impurities in the cartridge body 100 through the drain port 141.

A blade filter according to an embodiment of the present invention will be described in detail with a specific embodiment according to fig. 1 to 2. It is to be understood that the following description is illustrative only and is not intended as a specific limitation on the invention.

As shown in fig. 1 to 2, the scraper filter includes a cylinder body 100, a power impeller 200, a filter cartridge 300, a scraper 410, a scraper shaft 420, a scraper bearing 430 and a pressure gauge 500, the cylinder body 100 includes a first accommodating cavity 110, a second accommodating cavity 120 and a third accommodating cavity 140, the first accommodating cavity 110 is provided with a feed inlet 111, the bottom of the second accommodating cavity 120 is provided with a discharge outlet 121, and the bottom of the third accommodating cavity 140 is provided with a drain outlet 141. The power impeller 200 includes a vane 210 and a rotating portion 220, the vane 210 is inclined at a certain angle and uniformly disposed on the surface of the rotating portion 220, the power impeller 200 is disposed in the first accommodating chamber 110, and the feeding direction of the feeding hole 111 is tangential to the power impeller 200. The filter cartridge 300 is disposed in the second accommodating chamber 120, and the upper and lower ends of the filter cartridge 300 contact the filter cartridge 300 with the upper and lower ends of the second accommodating chamber 120 respectively through the first through hole 130 and the first accommodating chamber 110, and through the second through hole 150 and the second accommodating chamber 120, the first through hole 130 is disposed on the first accommodating chamber 110 on the side away from the feed inlet 111. The scraper bearing 430 is disposed at the second through hole 150, one end of the scraper shaft 420 is rotatably connected to the scraper bearing 430, the other end is connected to the rotating part 220, the upper and lower ends of the scraper 410 are respectively connected to the scraper shaft 420, and the scraper 410 is in contact with the inner wall of the filter cartridge 300. The pressure gauge 500 is disposed above the cylinder 100 for detecting the internal pressure of the cylinder 100.

The specific working process of the scraper filter is as follows: the slurry enters the first accommodating cavity 110 from the feeding hole 111, and then pushes the power impeller 200 in the first accommodating cavity 110 to rotate, after the slurry pushes the power impeller 200 to rotate for a certain distance, the slurry enters the filter cartridge 300 from the first through hole 130, then the slurry passes through the filter cartridge 300 to reach the second accommodating cavity 120, and is discharged through the discharging hole 121, and impurities in the slurry are left in the filter cartridge 300 and are deposited downwards in the third accommodating cavity 140. In the process of continuously feeding and filtering the slurry, the slurry can drive the power impeller 200 to continuously rotate, the scraper shaft 420 connected with the power impeller 200 can drive the scraper 410 to rotate, and the impurities attached to the wall of the filter cartridge 300 can be scraped off by the scraper 410 in the rotating process, so that the impurities are downwards deposited in the third accommodating cavity 140. The pressure gauge 500 monitors the internal pressure of the cylinder body 100 in real time, when excessive impurities are accumulated in the third accommodating cavity 140, the internal pressure of the cylinder body 100 can rise, the pressure gauge 500 gives an alarm after detecting the pressure rise, and at the moment, the user can discharge the impurities in the cylinder body 100 through the sewage outlet 141.

According to the utility model discloses scraper filter, kinetic energy drive when power impeller 200 is fed by thick liquids, and then drive scraper blade 410 rotates, need not to establish motor drive scraper blade 410 in addition in equipment and rotates, has simplified scraper filter's structure effectively, has reduced the manufacturing cost and the maintenance cost of complete machine. In addition, the scraper filter without an additional motor effectively reduces the overall size of the scraper filter, and is more convenient for workers to operate or clean the scraper filter.

In the description herein, references to the description of the term "one embodiment," "some embodiments," "an illustrative embodiment," "an example," "a specific example," or "some examples" or the like mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

While embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A scraper filter, comprising:

the barrel body (100), the barrel body (100) is provided with a first accommodating cavity (110) and a second accommodating cavity (120), the first accommodating cavity (110) is provided with a feeding hole (111), the second accommodating cavity (120) is provided with a discharging hole (121), and a first through hole (130) is formed between the first accommodating cavity (110) and the second accommodating cavity (120);

a power impeller (200), said power impeller (200) being disposed within said first receiving chamber (110);

a filter cartridge (300), the filter cartridge (300) being disposed in the second receiving chamber (120), the first receiving chamber (110) being in communication with the inside of the filter cartridge (300) through the first through hole (130);

scraper blade (410), scraper blade (410) set up in filter cylinder (300), and with the contact of filter cylinder (300) inner wall, scraper blade (410) with power impeller (200) are connected, power impeller (200) are used for the drive scraper blade (410) rotate.

2. The scraper filter of claim 1, wherein the cylinder (100) further comprises a third accommodating chamber (140), the third accommodating chamber (140) is disposed below the second accommodating chamber (120), a second through hole (150) is disposed between the second accommodating chamber (120) and the third accommodating chamber (140), and the filter cartridge (300) is communicated with the third accommodating chamber (140) through the second through hole (150).

3. The scraper filter as set forth in claim 2, wherein a drain outlet (141) is further provided on the third receiving chamber (140).

4. The scraper filter of claim 1 further comprising a scraper shaft (420) and a scraper bearing (430), wherein the scraper bearing (430) is disposed in the barrel (100), one end of the scraper shaft (420) is connected to the power impeller (200), the other end of the scraper shaft is rotatably connected to the scraper bearing (430), and the scraper (410) is disposed on the scraper shaft (420).

5. The scraper filter of claim 4 wherein the material of the scraper bearing (430) is ceramic.

6. The scraper filter of claim 1, wherein said power impeller (200) comprises a rotary portion (220) and vanes (210), said vanes (210) being disposed obliquely and uniformly on the surface of said rotary portion (220).

7. A scraper filter according to claim 1, characterized in that the feed opening (111) is arranged in the tangential direction of the power impeller (200).

8. The scraper filter of claim 1, wherein the first through hole (130) is provided at a side of the bottom of the first receiving chamber (110) away from the feed opening (111).

9. A scraper filter according to claim 1, characterized in that the outlet (121) is arranged at the bottom of the second receiving chamber (120).

10. The blade filter of claim 1, further comprising a pressure gauge (500), wherein the pressure gauge (500) is configured to detect an internal pressure of the cylinder (100).