Rotary drum sludge dewaterer

Abstract

The present application provides a kind of rotary wheel type sludge dewatering machine, comprising: frame, the frame is equipped with cover, cover inside is connected with bearing device, bearing device is installed on inner ring, the cover is equipped with feed pipe, discharge port I, the cover side is equipped with low pressure outer flushing device, the other side is equipped with high pressure outer flushing device, the cover below is equipped with back pressure plate, one end of back pressure plate is closely attached with outer ring, the other end can swing flexibly, back pressure plate is connected with frame by pin shaft, and can realize free swing along pin shaft, and back pressure plate terminal and partition form openable and closable discharge port II;One end of back pressure plate is connected with spring device by connecting rod, the present application is equipped with inner and outer flushing device and high pressure spray washing device, can efficiently clean filter screen and internal passage, improve filter screen cleaning degree, improve filtration effect, simultaneously realize the overall cleaning of outer cavity, so that outer cavity has no sludge retention.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of sludge dewatering, in particular to a rotating wheel type sludge dewatering machine. BACKGROUND

[0002] The rotating wheel type sludge dewatering machine has poor flushing effect, does not contain an inner flushing rod, an outer spraying device and a high-pressure flushing device, the end of the scraper of the dewatering machine is suspended, so that the scraper cannot tightly adhere to the filter screen to scrape mud, and the mud scraping effect is poor, and the cleaning effect of the filter screen is poor. SUMMARY

[0003] The technical problem solved by the present application is to provide a rotating wheel type sludge dewatering machine to solve the problems in the background.

[0004] The technical problem solved by the present application is solved by the following technical solution: a rotating wheel type sludge dewatering machine, comprising: a frame, the frame is provided with an outer cover, the inner cover is connected with a bearing device, the bearing device is installed on an inner ring, the outer cover is provided with a feeding pipe and a discharge port I, one side of the outer cover is provided with a low-pressure outer flushing device, and the other side is provided with a high-pressure outer flushing device, the lower side of the outer cover is provided with a back pressure plate, one end of the back pressure plate is tightly combined with an outer ring, the other end can be flexibly swung, the back pressure plate is connected with the frame through a pin shaft and can be freely swung along the pin shaft, and a discharge port II which can be opened and closed is formed between the end of the back pressure plate and a partition plate; one end of the back pressure plate is connected with a spring device through a connecting rod, the spring device is fixed on the frame through a spring support, the spring device provides elastic thrust for the swinging of the back pressure plate, so that a certain pressure is required to open the discharge port II to overcome the thrust of the spring, so that the flow of sludge in the inner cavity forms a back pressure.

[0005] Further, the outer cover comprises two outer covers which are symmetrically installed on the left and right sides, the inner cover is connected with a bearing device, and the bearing device is installed on an inner ring to support and fix the outer cover.

[0006] Further, the outer cover is provided with a plurality of convex web plates, the convex web plates form grooves in the inner cover of the outer cover, and the grooves are used for installing flushing blocks.

[0007] Further, the outer cover is internally provided with an inner ring, a filter screen and an outer ring. The inner ring is at the center of the device and is provided with a shaft hole. The shaft hole is connected with an external driving shaft. The rotation of the external driving shaft can drive the inner ring to rotate in the device. Two filter screen supports are symmetrically arranged on the left and right sides of the inner ring. The filter screen supports are provided with a filter screen. The outer ring is arranged at the outer ring of the device and is arranged on the frame. The inner cavity is formed in the device by the outer ring, the inner ring and the filter screen. The sludge enters the inner cavity from the feeding pipe. The filter screen and the filter screen support rotate together with the inner ring. At the same time, the sludge rotates and advances in the inner cavity under the action of friction. The sludge enters the concentration area in the inner cavity first. Then, the sludge enters the dehydration area with the rotation of the filter screen and the inner ring. The sludge is separated from the water in the filter screen under the pressure of the back pressure plate, thereby realizing the dehydration effect. The sludge after dehydration is discharged from the discharge port II outside the device.

[0008] Further, a plurality of scrapers are arranged on the outer ring and tightly contact the filter screen in the inner cavity, thereby realizing the scraping and cleaning of the sludge and impurities attached to the filter screen. The end of the scraper is pressed on the filter screen by the stop ring on the inner ring, thereby fixing the end of the scraper and tightly contacting the filter screen.

[0009] Further, a partition plate is arranged between the feeding port and the discharge port II in the inner cavity. The partition plate tightly contacts the inner ring and the filter screen, thereby separating the feeding port and the discharge port II and forming a C-shaped cavity in the device.

[0010] Further, a pipe joint, an inner flushing rod and a scraping strip are arranged on the partition plate. The pipe joint communicates with the inner flushing rod in the partition plate. The flushing water enters the inner flushing rod from the pipe joint. A plurality of slots are arranged on the inner flushing rod. The cleaning water is sprayed from the slots, thereby cleaning the filter screen and the inner cavity in the inner cavity.

[0011] Further, a plurality of scraping strips are arranged on the partition plate and tightly contact the filter screen, thereby realizing the scraping and cleaning of the impurities on the filter screen. The scraping strips are made of wear-resistant materials. The scraping strips and the filter screen are tightly contacted, thereby avoiding the direct friction between the partition plate and the filter screen and reducing the wear of the partition plate.

[0012] Further, two grooves are arranged on the partition plate and tightly contact the stop ring on the inner ring. A plurality of bolt holes are arranged on the partition plate. The partition plate is arranged on the frame by the bolts.

[0013] Further, two stop rings are arranged on the inner ring. The stop rings can tightly press the end of the scraper on the filter screen.

[0014] Further, a plurality of flushing blocks are mounted on the outer cover, the flushing blocks are mounted in grooves on the outer cover, a plurality of nozzles are mounted on the flushing blocks, the flushing blocks are connected with the pipe joint through the right angle joint, the external cleaning water enters the flushing blocks through the pipe joint, and is sprayed out through the plurality of nozzles, so that the external flushing of the outer cavity and the filter screen is realized.

[0015] Further, the low-pressure flushing device is mounted on the partition plate, is composed of a manifold, an electromagnetic valve I, a low-pressure hose and flushing blocks, cleaning water enters from a low-pressure water inlet, enters the two flushing blocks arranged in left-right symmetry through the manifold and the low-pressure hose, and is sprayed out from the flushing blocks, so that the low-pressure external flushing is realized.

[0016] Further, the high-pressure external flushing device is mounted on the frame, comprises an electromagnetic valve II, a high-pressure hose and flushing blocks, the two flushing blocks are arranged in symmetry, high-pressure water enters from a water inlet, enters the two flushing blocks arranged in left-right symmetry through the pipeline, the electromagnetic valve II and the high-pressure hose, and is sprayed out from the flushing blocks, so that the high-pressure external flushing is realized.

[0017] Compared with the prior art, the present application has the following beneficial effects:

[0018] 1. The inner and outer flushing devices and the high-pressure flushing device are arranged, the filter screen and the internal channel can be cleaned efficiently, the cleaning degree of the filter screen is improved, the filtering effect is improved, the external cavity is cleaned comprehensively, and no sludge is stored in the external cavity.

[0019] 2. The end of the scraper is fixed, so that the scraper is tightly attached to the filter screen, and the sludge scraping effect is improved.

[0020] 3. The flushing rod and the scraping strip are arranged on the partition plate, so that the filter screen is fully scraped at the partition plate, the wear of the partition plate is reduced, and the flushing rod flushes the filter screen and the internal cavity.

[0021] 4. The outer cover is provided with the raised width plate, the structural strength of the outer cover is improved, and the groove space is provided for the installation of the flushing device. BRIEF DESCRIPTION OF DRAWINGS

[0022] Figure 1 It is a structural schematic view of the present application.

[0023] Figure 2 It is a structural schematic view of the present application.

[0024] Figure 3 It is a mounting schematic view of the partition plate of the present application.

[0025] Figure 4 It is a mounting schematic view of the scraper of the present application.

[0026] Figure 5 It is a mounting schematic view of the filter screen of the present application.

[0027] Figure 6 This is a schematic diagram of the inner ring structure of the present invention.

[0028] Figure 7 This is a schematic diagram of the partition structure of the present invention.

[0029] Figure 8 This is a three-dimensional schematic diagram of the partition of the present invention.

[0030] Figure 9 This is a schematic diagram of the inner side of the outer cover of the present invention.

[0031] Figure 10 This is a schematic diagram of the outer side of the outer casing of the present invention.

[0032] Figure 11 This is a schematic diagram of the flushing block installation according to the present invention.

[0033] Figure 12 This is a schematic diagram of the installation of the raised plate of the present invention.

[0034] Figure 13 This is a schematic diagram of the manifold installation according to the present invention.

[0035] Figure 14 This is a schematic diagram of the high-pressure water pipeline installation according to the present invention.

[0036] In the diagram: 1. Frame; 2. Outer cover; 3. Inner ring; 4. Back pressure plate; 5. Spring device; 6. Feed pipe; 7. Low-pressure external flushing device; 8. High-pressure external flushing device; 9. Outlet I; 10. Filter screen; 7.1. Manifold; 7.2. Low-pressure water inlet; 7.3. Solenoid valve I; 7.4. Low-pressure hose; 8.1. High-pressure water inlet; 8.2. High-pressure water pipeline; 8.3. Solenoid valve II; 8.4. High-pressure hose; 8.5. High-pressure pipe support; 10.1. Screw; 11. Filter screen support; 11.1. Bolt; 12. Outer ring; 18.1. Through hole; 13. Bearing device; 18.2. Pipe joint; 14. Water outlet pipe; 18.3. Inner flushing rod; 15. Inner cavity; 18.4. Groove; 16. Outer cavity; 18.5. Arc edge; 17. 18.6 Scraper blade; 18.7 Partition plate; 19. Bolt hole; 10.8 Pin shaft; 11.9 Groove; 20.1 Feed inlet; 21.1 Nozzle; 20.2 Concentration zone; 21.2 Right angle connector; 20.3 Dehydration zone; 21.3 Pipe connector; 20.4 Discharge port II; 21.4 Water passage hole; 21.5 Rinsing block; 2.1 Raised plate; 2.2 Outer cover groove; 3.1 Inner shaft hole; 3.2 Retaining ring; 5.1 Connecting rod; 5.2 Spring bracket. Detailed Implementation

[0037] To make the technical means, creative features, objectives and effects of the present invention easier to understand, the present invention will be further described below with reference to specific illustrations. In the description of the present invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation", "connection" and "connection" should be interpreted broadly. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection between the internal parts of two components. Example 1

[0038] like Figures 1-14 As shown, the rotary wheel sludge dewatering machine includes: a frame 1, an outer cover 2 on the frame 1, a bearing device 13 connected inside the outer cover 2, the bearing device 13 being mounted on an inner ring 3, an inlet pipe 6 and an outlet 19 on the outer cover 2, a low-pressure external flushing device 7 on one side of the outer cover 2 and a high-pressure external flushing device 8 on the other side. A back pressure plate 4 is provided below the outer cover 2. One end of the back pressure plate 4 is tightly fitted to the outer ring 12, and the other end can swing flexibly. The back pressure plate 4 is connected to the frame 1 through a pin 19 and can swing freely along the pin 19. An openable and closable discharge port II20.4 is formed at the end of the back pressure plate 4 and the partition 18. One end of the back pressure plate 4 is connected to the spring device 5 through a connecting rod 5.1. The spring device 5 is fixed to the frame 1 through a spring bracket 5.2. The spring device 5 provides elastic thrust for the swing of the back pressure plate 4, so that the opening of the discharge port II20.4 requires a certain pressure to overcome the spring thrust, thus causing the flow of sludge in the inner cavity 15 to form back pressure. Example 2

[0039] like Figures 1-14 As shown, a rotary wheel sludge dewatering machine includes: a frame 1, an outer cover 2 on the frame 1, the inside of the outer cover 2 connected to a bearing device 13, the bearing device 13 mounted on an inner ring 3, an inlet pipe 6 and an outlet 19 on the outer cover 2, a low-pressure external flushing device 7 on one side of the outer cover 2 and a high-pressure external flushing device 8 on the other side, a back pressure plate 4 below the outer cover 2, one end of the back pressure plate 4 tightly fitted to the outer ring 12, the outer cover 2 mounted on the frame 1, the equipment having two outer covers 2 symmetrically mounted on the left and right sides, the inside of the outer cover 2 connected to the bearing device 13, the bearing device 13 mounted on the inner ring 3, the bearing device 13 supporting and fixing the outer cover 2. The outer cover 2 has multiple raised spokes 2.1, the raised spokes 2.1 forming grooves 2.2 inside the outer cover 2, the grooves 2.2 for mounting flushing blocks 21. Example 3

[0040] like Figures 1-14As shown, the rotary wheel sludge dewatering machine includes: a frame 1, an outer cover 2 on the frame 1, a bearing device 13 connected inside the outer cover 2, the bearing device 13 being mounted on an inner ring 3, an inlet pipe 6 and an outlet 19 on the outer cover 2, a low-pressure external flushing device 7 on one side of the outer cover 2 and a high-pressure external flushing device 8 on the other side. Below the outer cover 2, there is a back pressure plate 4. One end of the back pressure plate 4 is tightly fitted with the outer ring 12. The overall structure of the equipment is similar to a wheel shape. Inside, there is an inner ring 3, a filter screen 10, and an outer ring 12. The inner ring 3 is located at the center of the equipment. The inner ring 3 has a shaft hole 3.1, which is connected to an external drive shaft. The rotation of the external drive shaft can drive the inner ring 3 to rotate inside the equipment. Two filter screen supports 11 are symmetrically installed on the left and right sides of the inner ring 3. The filter screen 10 is installed on the filter screen supports 11. The outer ring 12 is installed on the outer ring inside the equipment and is mounted on the frame 1. Surrounded by the outer ring 12, the inner ring 3, and the filter screen 10, an inner cavity 15 is formed inside the equipment. The sludge enters the inner cavity 15 from the feed pipe 6. The filter screen and the filter screen support rotate together with the inner ring 3. At the same time, the sludge is pushed forward by the rotation of the filter screen and the inner ring 3 within the inner cavity 15 under the action of friction. The sludge first enters the concentration zone 20.2 in the inner cavity 15, and then enters the dewatering zone 20.3 with the rotation of the filter screen and inner ring. Under the pressure of the back pressure plate 4, the sludge is filtered by the filter screen 10 to separate the water in the sludge, thus achieving the dewatering effect. The dewatered sludge is discharged from the discharge port II 20.4. Example 4

[0041] like Figures 1-14 As shown, a rotary wheel sludge dewatering machine includes: a frame 1, an outer cover 2 on the frame 1, a bearing device 13 connected to the inside of the outer cover 2, the bearing device 13 being mounted on an inner ring 3, a feed pipe 6 and a discharge port 19 on the outer cover 2, a low-pressure external flushing device 7 on one side of the outer cover 2 and a high-pressure external flushing device 8 on the other side, a back pressure plate 4 below the outer cover 2, one end of the back pressure plate 4 being tightly fitted to the outer ring 12, and multiple scrapers 17 mounted on the outer ring 12. The scrapers 17 are tightly fitted to the filter screen 10 within the inner cavity 15, achieving the function of scraping and cleaning the sludge and impurities attached to the filter screen. The ends of the scrapers 17 are pressed against the filter screen 10 by retaining rings 3.2 on the inner ring 3, thereby fixing the ends of the scrapers 17 and ensuring that the entire scraper 17 is tightly fitted to the filter screen 10. Example 5

[0042] like Figures 1-14As shown, the rotary wheel sludge dewatering machine includes: a frame 1, an outer cover 2 on the frame 1, a bearing device 13 connected inside the outer cover 2, the bearing device 13 being installed on the inner ring 3, a feed pipe 6 and a discharge port I9 on the outer cover 2, a low-pressure external flushing device 7 on one side of the outer cover 2 and a high-pressure external flushing device 8 on the other side, a back pressure plate 4 below the outer cover 2, one end of the back pressure plate 4 being tightly fitted to the outer ring 12, a plurality of scrapers 17 being installed on the outer ring 12, the scrapers 17 being tightly fitted to the filter screen 10 in the inner cavity 15, a partition 18 being installed between the feed port 20.1 and the discharge port II 20.4 in the inner cavity 15, the partition 18 being tightly fitted to the inner ring 3 and the filter screen 10, achieving the separation of the feed port and the discharge port II, forming a C-shaped cavity inside the equipment. The partition 18 is equipped with a pipe connector 18.2, an internal flushing rod 18.3, and scrapers 18.6. The pipe connector 18.2 is connected to the internal flushing rod 18.3 inside the partition. Flushing water enters the internal flushing rod 18.3 from the pipe connector 18.2. The internal flushing rod 18.3 has multiple slots 18.4, from which cleaning water is sprayed out, achieving cleaning of the filter screen and the inner cavity. The partition 18 is equipped with multiple scrapers 18.6, which are in contact with the filter screen to scrape away impurities. At the same time, the scrapers 18.6 are made of wear-resistant material. Through the scraping action of the scrapers against the filter screen, the partition 18 can avoid direct frictional contact with the filter screen 10, thereby reducing the wear of the partition 18. The partition 18 has two grooves 18.8 at the point where it fits against the inner ring 3, and the grooves 18.8 fit tightly against the retaining ring 3.2 on the inner ring 3. The partition 18 has multiple bolt holes 18.7, and the partition is installed on the frame 1 by bolts. Example 6

[0043] like Figures 1-14 As shown, a rotary wheel sludge dewatering machine includes: a frame 1, an outer cover 2 on the frame 1, a bearing device 13 connected inside the outer cover 2, the bearing device 13 being installed on an inner ring 3, an inlet pipe 6 and an outlet 19 on the outer cover 2, a low-pressure external flushing device 7 on one side of the outer cover 2 and a high-pressure external flushing device 8 on the other side, a back pressure plate 4 below the outer cover 2, one end of the back pressure plate 4 being tightly fitted to the outer ring 12, a plurality of scrapers 17 being installed on the outer ring 12, the scrapers 17 being tightly fitted to the filter screen 10 inside the inner cavity 15, and two retaining rings 3.2 on the inner ring 3, the retaining rings 3.2 being able to tighten the ends of the scrapers 17 onto the filter screen 10. Example 7

[0044] like Figures 1-14As shown, the rotary wheel sludge dewatering machine includes: a frame 1, an outer cover 2 on the frame 1, a bearing device 13 connected inside the outer cover 2, the bearing device 13 being mounted on an inner ring 3, an inlet pipe 6 and an outlet 19 on the outer cover 2, a low-pressure external flushing device 7 on one side of the outer cover 2 and a high-pressure external flushing device 8 on the other side. A back pressure plate 4 is provided below the outer cover 2. One end of the back pressure plate 4 is tightly fitted to the outer ring 12. Multiple scrapers 17 are installed on the outer ring 12. The scrapers 17 are tightly fitted to the filter screen 10 in the inner cavity 15. Multiple rinsing blocks 21 are installed on the outer cover 2. The rinsing blocks 21 are installed in the grooves 2.2 on the outer cover. Multiple nozzles 21.1 are installed on the rinsing blocks 21. The rinsing blocks are connected to the pipe joints 21.3 through right-angle joints 21.2. External cleaning water enters the rinsing blocks 21 through the pipe joints 21.3 and is sprayed out through the multiple nozzles 21.1, thereby realizing the external rinsing of the outer cavity 16 and the filter screen 10. Example 8

[0045] like Figures 1-14 As shown, the rotary wheel sludge dewatering machine includes: a frame 1, an outer cover 2 on the frame 1, a bearing device 13 connected inside the outer cover 2, the bearing device 13 being installed on the inner ring 3, an inlet pipe 6 and an outlet 19 on the outer cover 2, a low-pressure external flushing device 7 on one side of the outer cover 2 and a high-pressure external flushing device 8 on the other side, a back pressure plate 4 below the outer cover 2, one end of the back pressure plate 4 being tightly fitted to the outer ring 12, multiple scrapers 17 being installed on the outer ring 12, the scrapers 17 being tightly fitted to the filter screen 10 in the inner cavity 15, and the low-pressure spray washing device 7 being installed on the partition plate 18, consisting of a manifold 7.1, a solenoid valve 17.3, a low-pressure hose 7.4, and spray washing blocks 21. The cleaning water enters from the low-pressure inlet 7.2 and enters the two symmetrically arranged spray washing blocks 21 through the manifold 7.1 and the low-pressure hose 7.4, and then sprays out from the spray washing blocks 21, thereby achieving low-pressure external flushing. Example 9

[0046] like Figures 1-14As shown, the rotary wheel type sludge dewatering machine comprises a frame 1, a cover 2 is arranged on the frame 1, the cover 2 is connected with a bearing device 13 inside, the bearing device 13 is installed on an inner ring 3, a feeding pipe 6 and a discharge port I 9 are arranged on the cover 2, a low-pressure external flushing device 7 is arranged on one side of the cover 2, and a high-pressure external flushing device 8 is arranged on the other side, a back pressure plate 4 is arranged below the cover 2, one end of the back pressure plate 4 is tightly attached to an outer ring 12, a plurality of scrapers 17 are installed on the outer ring 12, the scrapers 17 are tightly attached to a filter screen 10 in an inner cavity 15, the high-pressure external flushing device 8 is installed on the frame 1 and comprises an electromagnetic valve II 8.3, a high-pressure hose 8.4 and a spray washing block 21, two spray washing blocks 21 are symmetrically arranged, high-pressure water enters from a water inlet 8.1, and then enters the two symmetrically arranged flushing blocks 21 through a pipeline 8.2, the electromagnetic valve II 8.3 and the high-pressure hose 8.4, and is sprayed out from the flushing blocks 21, so that high-pressure external spraying and washing are realized.

[0047] The rotary wheel type sludge dewatering machine comprises a frame, a cover, an inner ring, an outer ring, a back pressure plate, a spring device, a filter screen, a scraper, a low-pressure external flushing device, a high-pressure external flushing device, an internal flushing device and the like, and after the sludge with water content of more than 95% is dewatered by the rotation and extrusion of the filter screen, the water content of the sludge can be reduced to below 70%, so that the dewatering treatment of the sludge is realized.

[0048] The basic principles and main features of the present application and the advantages of the present application are shown and described above. It should be understood by those skilled in the art that the present application is not limited by the above examples, and the above examples and descriptions in the specification are only to illustrate the principles of the present application, and various changes and improvements can be made to the present application without departing from the spirit and scope of the present application, and these changes and improvements all fall within the scope of the present application. The scope of protection of the present application is defined by the appended claims and their equivalents.

Claims

1. A rotary drum sludge dewaterer comprising: Frame (1), the frame (1) is equipped with cover (2), cover (2) inside and bearing device (13) are connected, bearing device (13) is installed on the inner ring (3), the cover (2) is equipped with feed pipe (6), discharge port I (9), it is characterized by: the cover (2) one side is equipped with low pressure outer flush device (7), the other side is equipped with high pressure outer flush device (8), the cover (2) below is equipped with back pressure plate (4), one end of back pressure plate (4) is closely combined with outer ring (12), the other end can swing freely, back pressure plate (4) is connected with frame (1) through pin shaft (19), and can realize free swing along pin shaft (19), and the end of back pressure plate (4) forms openable and closable discharge port II (20.4) with partition (18);One end of back pressure plate (4) is connected with spring device (5) through connecting rod (5.1), spring device (5) is fixed on frame (1) through spring support (5.2), spring device (5) provides elastic thrust for the swing of back pressure plate (4), so that a certain pressure is needed to open discharge port II (20.4) to overcome the thrust of spring, so that the flow of sludge in inner cavity (15) forms back pressure, the cover (2) is internally installed with inner ring (3), filter screen (10), outer ring (12), the inner ring (3) is at the center of the equipment, the inner ring (3) contains shaft hole (3.1), the shaft hole (3.1) is connected with external driving shaft, and the rotation of external driving shaft can drive the inner ring (3) to rotate in the equipment;The outer ring (12) is installed with a plurality of scrapers (17), the scraper (17) is closely combined with filter screen (10) in inner cavity (15), realizes the scraping and cleaning effect of the sludge impurities attached in filter screen (10);The end of scraper (17) is pressed to filter screen (10) by the blocking ring (3.2) on the inner ring (3), realizes the fixation of the end of scraper (17), and then makes the whole scraper (17) closely combined with filter screen (10);In inner cavity (15), feed inlet (20.1) and discharge port II (20.4) are installed with partition (18), the partition (18) is closely combined with inner ring (3) and filter screen (10), realizes the partition of feed inlet (20.1) and discharge port II (20.4), so that the equipment forms C-shaped cavity;The partition (18) is installed with pipe joint (18.2), inner flush rod (18.3), scraper (18.6), the pipe joint (18.2) is communicated with inner flush rod (18.3) in the partition (18), the flush water enters into inner flush rod (18.3) from pipe joint (18.2), a plurality of slots (18.4) are distributed on inner flush rod (18.3), the cleaning water is sprayed from slot (18.4), realizes the cleaning of filter screen (10) and inner cavity (15) in inner cavity.

2. A rotary drum sludge de-waterer according to claim 1 wherein: The outer cover (2) comprises two left and right outer covers (2) which are symmetrically installed, the inner part of the outer cover (2) is connected with the bearing device (13), the bearing device (13) is installed on the inner ring (3), and the outer cover (2) is supported and fixed through the bearing device (13); a plurality of protruding webs (2.1) are arranged on the outer cover (2), the protruding webs (2.1) form grooves (2.2) in the inner part of the outer cover (2), and the grooves (2.2) are used for installing the flushing blocks (21).

3. The rotary drum sludge de-wateror according to claim 1, wherein: The inner part of the outer cover (2) is provided with the inner ring (3), the filter screen (10) and the outer ring (12), the inner ring (3) is arranged at the center of the equipment, the inner ring (3) is provided with a shaft hole (3.1), the shaft hole (3.1) is connected with an external driving shaft, the inner ring (3) can be driven to rotate in the equipment through the rotation of the external driving shaft, two filter screen supports (11) are symmetrically arranged on the left and right sides of the inner ring (3), the filter screen (10) is arranged on the filter screen support (11), the outer ring (12) is arranged at the outer ring of the equipment, and the outer ring (12) is arranged on the frame (1); the inner cavity (15) is formed in the equipment by the outer ring (12), the inner ring (3) and the filter screen (10), sludge enters the inner cavity (15) from the feeding pipe (6), the filter screen (10) and the filter screen support (11) rotate together with the inner ring (3), and the sludge rotates and advances in the inner cavity (15) under the action of friction together with the filter screen (10) and the inner ring (3); the sludge first enters the concentration area (20.2) in the inner cavity (15), then enters the dewatering area (20.3) along with the rotation of the filter screen (10) and the inner ring (3), the sludge is separated from the water in the sludge through the filtration of the filter screen (10) under the pressure of the back pressure plate (4), and the dewatering effect is realized; the sludge after dewatering is discharged out of the equipment from the discharge port II (20.4).

4. The rotary drum sludge de-wateror according to claim 1, wherein: A plurality of scraping strips (18.6) are arranged on the partition plate, the scraping strips (18.6) are attached to the filter screen (10), the impurities on the filter screen (10) are scraped and cleaned, the material of the scraping strips (18.6) is wear-resistant, the scraping strips (18.6) are attached to the filter screen (10) to avoid the friction contact between the partition plate (18) and the filter screen (10), and the wear of the partition plate (18) is reduced; two grooves are arranged on the partition plate (18) and attached to the inner ring (3), the grooves are tightly attached to the retaining ring (3.2) on the inner ring (3), a plurality of bolt holes (18.7) are arranged on the partition plate (18), and the partition plate (18) is installed on the frame (1) through bolts.

5. The rotary drum sludge de-wateror according to claim 1, wherein: Two retaining rings (3.2) are arranged on the inner ring (3), and the ends of the scraping plate (17) are tightly attached to the filter screen (10).

6. The rotary drum sludge de-wateror according to claim 1, wherein: The outer cover (2) is provided with a plurality of washing blocks (21), the washing blocks (21) are installed in the grooves (2.2) on the outer cover (2), the washing blocks (21) are provided with a plurality of nozzles (21.1), the washing blocks (21) are connected with the pipe joints through the right-angle joints (21.2), the external cleaning water enters the washing blocks (21) through the pipe joints, and is sprayed out through the nozzles (21.1), thereby realizing the external spraying and washing of the outer cavity (16) and the filter screen (10).

7. The rotary drum sludge de-wateror according to claim 1 wherein: The low-pressure outer washing device (7) is installed on the partition plate (18) and is composed of a manifold (7.1), an electromagnetic valve I (7.3), a low-pressure hose (7.4) and the washing blocks (21), the cleaning water enters from the low-pressure water inlet (7.2), enters the two symmetrically arranged washing blocks (21) through the manifold (7.1) and the low-pressure hose (7.4), and is sprayed out from the washing blocks (21), thereby realizing the low-pressure outer washing.

8. The rotary drum sludge de-wateror according to claim 1, wherein: The high-pressure outer washing device (8) is installed on the frame (1) and comprises an electromagnetic valve II (8.3), a high-pressure hose (8.4) and the washing blocks (21), the two washing blocks (21) are symmetrically arranged, the high-pressure water enters from the water inlet (8.1), enters the two symmetrically arranged washing blocks (21) through the pipeline (8.2), the electromagnetic valve II (8.3) and the high-pressure hose (8.4), and is sprayed out from the washing blocks (21), thereby realizing the high-pressure outer washing.

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