Sludge dewatering device for sewage treatment and working method

Abstract

The present application relates to a kind of sludge dewatering device for sewage treatment, the top of cabinet has feed inlet, inside from top to bottom including extrusion dehydration component, spin dehydration component, fixed plate with hole;Extrusion dehydration component includes the first box body of mutually spliced to form a rectangular container with open upper end, second box body, pressing plate;Second box body is fixed with the inner wall of cabinet, the moving block of first box body both ends is clamped in the strip-shaped moving mouth opened in the both sides of cabinet, and first box body can be adhered or separated at splicing joint by moving block along strip-shaped moving mouth;First box body, second box body respectively have strip-shaped slot parallel with strip-shaped moving mouth on, strip-shaped slot has slider, two sliders are respectively fixedly connected with a scraper, and scraper is parallel with the inner edge of rectangular container, can scrape sludge in rectangular container to splicing joint;Spin dehydration component includes a group of rotating blades and the motor of driver rotation;Water outlet pipe is provided on the wall of cabinet below fixed plate.

Description

Technical Field

[0001] This invention relates to a sludge dewatering device and its working method for wastewater treatment, belonging to the field of sludge dewatering technology. Background Technology

[0002] Wastewater refers to a complex mixture of inorganic and organic matter in various forms, including: ① floating and suspended solid particles of various sizes; ② colloidal and gel-like diffuses; ③ pure solutions. There are many methods for treating wastewater, which can generally be categorized into physical methods, chemical methods, and biological methods.

[0003] Since one step in wastewater treatment is sludge dewatering, existing dewatering methods generally employ only one approach, such as squeeze dewatering or centrifugal dewatering. However, current technologies often fail to effectively separate sufficient water from the sludge during operation, resulting in unsatisfactory dewatering efficiency and effectiveness. Summary of the Invention

[0004] The purpose of this invention is to provide a sludge dewatering device for wastewater treatment, thereby solving the aforementioned technical problems.

[0005] The present invention adopts the following technical solution:

[0006] A sludge dewatering device for wastewater treatment includes a housing 1; the housing 1 has a feed inlet 17 at the top, and its interior, from top to bottom, includes a squeezing dewatering assembly, a spin-drying dewatering assembly, and a perforated fixing plate 23; the squeezing dewatering assembly includes a first box 2, a second box 3, and a pressure plate 11 that can be spliced ​​together to form a rectangular container with an open top; the second box 3 is fixed to the inner wall of the housing 1, and the movable blocks 14 at both ends of the first box 2 are engaged in strip-shaped movable openings 16 on both sides of the housing 1. Pushing the movable blocks 14 along the movable openings 16 can fit or separate the first box 2 and the first box 3 at the joint; the first box 2 and the second box 3 each have a strip-shaped groove 4 parallel to the strip-shaped movable openings 16, the strip-shaped grooves... The container 4 has two sliders 6, each of which is fixedly connected to a scraper. The scraper is parallel to the inner edge of the rectangular container and can scrape the sludge in the rectangular container toward the seam. The top of each scraper is fixedly connected to a pull block, which extends upward from the feed port 17 of the housing 1. The bottom of the first box 2 and the second box 3 are provided with a drain hole 18. The pressure plate 11 is shaped and corresponds to the upper opening of the rectangular container. The top of the pressure plate 11 is fixedly connected to an upright pull rod 12, which extends upward from the housing 1. The pressure plate 11 has a hole for the pull block to pass through. The spin-drying and dewatering assembly includes a set of rotating blades 27 and a motor 26 that drives the rotation. A water outlet pipe 15 is provided on the wall of the housing 1 below the fixed plate 23.

[0007] Preferably, the power for the translation of the pull block is operated manually or by a translation power device.

[0008] Preferably, the lifting of the lever 12 is powered manually or by a lifting power device.

[0009] Preferably, the height of the scraper is equal to the inner height of the rectangular container, and the scraper is in contact with the inner bottom of the rectangular container.

[0010] Preferably, the perforated fixing plate 23 is fixedly connected to a set of springs 22 at its lower part. The weight change caused by water falling through the through hole 25 on the fixing plate 23 causes the fixing plate 23 to vibrate up and down under the action of the springs 22.

[0011] Furthermore, a water-absorbing sheet 13 is fixedly connected to the bottom of the pressure plate 11.

[0012] Furthermore, the pull rod 12 has a locking hole 19 on its side, and a locking rod 20 for supporting the top wall of the housing 1 is engaged inside the locking hole 19.

[0013] A method for operating a sludge dewatering device for wastewater treatment involves using the aforementioned sludge dewatering device. The pull rod 12 is pulled upwards until the top of the pressure plate 11 contacts the inner wall of the housing 1. Then, the locking rod 20 is inserted into the locking hole 19 to facilitate sludge pouring. The sludge is then poured in through the feed inlet 17. After the sludge falls onto the first housing 2 and the second housing 3, the locking rod 20 is removed from the locking hole 19. The pull rod 12 is pressed downwards to squeeze out some of the water from the sludge. Wastewater will fall sequentially from the drain hole 18 and the through hole 25, and flow out from the outlet pipe 15. At this time, the water-absorbing plate 13 at the bottom of the pressure plate 11 can absorb the wastewater. After repeated squeezing, the pull rod 12 is pulled to the top to contact the inner wall of the housing 1, and then the locking rod 20 is inserted into the locking hole. 19. Then open the box door 24 and push the moving block 14 inside the moving port 16 to separate the first box 2 and the second box 3. At this time, pull the first pull block 9 and the second pull block 10 respectively. The first pull block 9 and the second pull block 10 respectively drive their respective scrapers to move to opposite sides, so as to scrape the sludge inside the first box 2 and the second box 3 onto the fixed plate 23. Close the box door 24 and start the motor 26. At this time, the motor 26 drives the rotating blade 27 to rotate, so as to shake off the water in the sludge again. The sewage will flow out from the through hole 25 again. Then, under the action of the spring 22, the sludge will be shaken to achieve the effect of turning over, so as to fully dry it. After drying, open the box door 24 to take out the sludge.

[0014] The beneficial effects of this invention are as follows:

[0015] 1) It can squeeze and absorb water from the sludge, thereby initially separating the water from the sludge. The rotating blades can further dry the sludge, and finally the springs can thoroughly dry it, thus improving work efficiency.

[0016] 2) It has both extrusion dewatering and spin-drying dewatering methods, which can fully separate the water from the sludge and greatly improve the effect and efficiency of sludge dewatering.

[0017] 3) A set of springs is installed under the fixed plate. The weight change caused by water falling through the through holes on the fixed plate causes the fixed plate to vibrate up and down under the action of the springs. No active power is required, which further improves the dehydration effect and efficiency. Attached Figure Description

[0018] Figure 1 This is a perspective view of the sludge dewatering device for wastewater treatment according to the present invention.

[0019] Figure 2 yes Figure 1 Enlarged view of part A in the middle.

[0020] Figure 3 yes Figure 1 Enlarged view of part B in the middle.

[0021] Figure 4 This is a schematic diagram of the closed structure of the first and second boxes.

[0022] Figure 5 This is a schematic diagram showing the separation of the first and second boxes.

[0023] Numbering on the map:

[0024] 1. Casing; 2. First housing; 3. Second housing; 4. First slide groove; 5. Second slide groove; 6. Slider; 7. First scraper; 8. Second scraper; 9. First pull block; 10. Second pull block; 11. Pressure plate; 12. Pull rod; 13. Water suction plate; 14. Moving block; 15. Water outlet pipe; 16. Moving port; 17. Feed inlet; 18. Leakage hole; 19. Locking hole; 20. Locking rod; 21. Fixing port; 22. Spring; 23. Fixing plate; 24. Housing door; 25. Through hole; 26. Motor; 27. Rotating blade. Detailed Implementation

[0025] The present invention will be further described below with reference to the accompanying drawings and specific embodiments.

[0026] This embodiment provides a sludge dewatering device for sewage treatment, which can squeeze and absorb water from the sludge, thereby initially separating the water from the sludge. The sludge can be further dried by rotating blades, and finally, it can be fully dried by spring vibration, thereby improving work efficiency.

[0027] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0028] Please refer to the following: Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5 ,in, Figure 1 This is a schematic diagram of the first embodiment of the sludge dewatering device for wastewater treatment provided by the present invention. Figure 2 for Figure 1 The enlarged schematic diagram of part A shown below; Figure 3 for Figure 1 The enlarged schematic diagram of section B is shown below; Figure 4 This is a schematic diagram of the closed structure of the first and second boxes provided by the present invention; Figure 5 This is a schematic diagram of the structure of the first and second boxes separated according to the present invention.

[0029] A sludge dewatering device for sewage treatment includes: a housing 1, a second housing 3 fixedly connected inside the housing 1, a first housing 2 inside the housing 1, a first sliding groove 4 inside the first housing 2, a second sliding groove 5 inside the second housing 3, sliders 6 slidably connected inside both the first sliding groove 4 and the second sliding groove 5, a first scraper 7 and a second scraper 8 fixedly connected to the top of the two sliders 6 respectively, a first pull block 9 fixedly connected to one side of the first scraper 7, a second pull block 10 fixedly connected to one side of the second scraper 8, a pressure plate 11 inside the housing 1, a pull rod 12 fixedly connected to the top of the pressure plate 11, and a water-absorbing plate 13 fixedly connected to the bottom of the pressure plate 11.

[0030] Movable blocks 14 are fixedly connected to both sides of the first housing 2. Movable openings 16 are provided on both sides of the housing 1. One side of the movable block 14 passes through the movable opening 16 and extends to the outside of the housing 1.

[0031] The top of the housing 1 is provided with a feed inlet 17. The tops of the first pull block 9 and the second pull block 10 pass through the feed inlet 17 and extend to the outside of the housing 1. One end of the pull rod 12 passes through the top of the housing 1 and extends to the outside of the housing 1.

[0032] Both the first box 2 and the second box 3 have a leakage hole 18 inside, and the pull rod 12 has a locking hole 19 inside, and a locking rod 20 is locked inside the locking hole 19.

[0033] Please refer to the following: Figure 1 and Figure 2 As the preferred option:

[0034] The housing 1 has a fixing opening 21 inside, and a spring 22 is fixedly connected inside the fixing opening 21. One end of the spring 22 is fixedly connected to a fixing plate 23, and the fixing plate 23 has a through hole 25 inside. The weight change caused by water falling into the through hole 25 on the fixing plate 23 causes the fixing plate 23 to vibrate up and down under the action of the spring 22.

[0035] A motor 26 is fixedly connected to one side of the housing 1, and the motor 26 is rotatably connected to a rotating blade 27 via a bearing.

[0036] The front of the housing 1 is provided with a door 24, and the bottom of the first scraper 7 and the second scraper 8 are in contact with the top of the first housing 2 and the second housing 3, respectively.

[0037] The working principle of the sludge dewatering device for wastewater treatment provided by this invention is as follows:

[0038] In use, pull the lever 12 upwards until the top of the pressure plate 11 contacts the inner wall of the housing 1, then insert the locking rod 20 into the locking hole 19 to facilitate the pouring of sludge. Pour the sludge into the feed inlet 17. After the sludge falls onto the first chamber 2 and the second chamber 3, remove the locking rod 20 from the locking hole 19 and press the lever 12 downwards to squeeze out some of the water from the sludge. The wastewater will fall sequentially from the drain hole 18 and the through hole 25 and flow out from the outlet pipe 15. At this time, the absorbent plate 13 at the bottom of the pressure plate 11 can absorb the wastewater. After repeated squeezing, pull the lever 12 to the top until it contacts the inner wall of the housing 1, then insert the locking rod 20 into the locking hole 19. Then open the door 24 and access the inside of the moving port 16. Push the moving block 14 to separate the first box 2 and the second box 3. Then pull the first pull block 9 and the second pull block 10 respectively. The first pull block 9 and the second pull block 10 respectively drive the first scraper 7 and the second scraper 8 to move to opposite sides, so that the sludge inside the first box 2 and the second box 3 can be scraped onto the fixed plate 23. Close the box door 24 and start the motor 26. At this time, the motor 26 drives the rotating blade 27 to rotate, so that the water in the sludge can be spun out again. The sewage will flow out from the through hole 25 again. Then, under the action of the spring 22, the sludge will be shaken to achieve the effect of turning over, so that it can be fully dried. After drying, open the box door 24 to take out the sludge.

[0039] Compared with related technologies, the sludge dewatering device for sewage treatment provided by this invention can squeeze and absorb water from the sludge, thereby initially separating the water from the sludge. Furthermore, the sludge can be further dried by rotating the blades 27. In addition, a set of springs is installed below the fixed plate. The weight change caused by water falling through the through-holes on the fixed plate causes the plate to vibrate up and down under the action of the springs, eliminating the need for active power supply and further improving the dewatering effect and efficiency.

[0040] The above are preferred embodiments of the present invention. Those skilled in the art can make various modifications or improvements based on these embodiments. Without departing from the overall concept of the present invention, such modifications or improvements should fall within the scope of protection claimed by the present invention.

Claims

1. A sludge dewatering device for wastewater treatment, characterized in that: Includes a housing (1); the housing (1) has a feed inlet (17) at the top, and the interior includes, from top to bottom, a squeezing dehydration assembly, a spin-drying dehydration assembly, and a perforated fixing plate (23); The extrusion dehydration assembly includes a first box (2), a second box (3), and a pressure plate (11) that can be spliced ​​together to form a rectangular container with an open top. The second box (3) is fixed to the inner wall of the casing (1). The movable blocks (14) at both ends of the first box (2) are locked in the strip-shaped movable openings (16) on both sides of the casing (1). Pushing the movable blocks (14) along the movable openings (16) can fit or separate the first box (2) and the first box (3) at the joint. The first box (2) and the second box (3) are respectively provided with strip-shaped grooves (4) parallel to the strip-shaped movable openings (16). The strip-shaped grooves (4) are provided with sliders (6). Each slider (6) is fixedly connected to a scraper. The scraper is parallel to the inner edge of the rectangular container and can scrape the sludge in the rectangular container toward the joint. The top of each scraper is fixedly connected to a pull block. The pull block extends upward from the feed port (17) of the casing (1). The bottom of the first box (2) and the second box (3) are provided with leakage holes (18). The pressure plate (11) is similar in shape and size to the upper opening of the rectangular container. The top of the pressure plate (11) is fixedly connected to the upright pull rod (12), which extends upward out of the housing (1). The pressure plate (11) has a hole for the pull block to pass through. The spin-drying and dehydration assembly includes a set of rotating blades (27) and a motor (26) that drives the rotation; A water outlet pipe (15) is provided on the wall of the casing (1) below the fixing plate (23); The power to move the block is either manually operated or by a translational power device; The perforated fixing plate (23) is fixedly connected to a set of springs (22) at the bottom. The weight change caused by the water falling through the through hole (25) on the fixing plate (23) causes the fixing plate (23) to vibrate up and down under the action of the springs (22). A water-absorbing sheet (13) is fixedly connected to the bottom of the pressure plate (11); The pull rod (12) has a locking hole (19) on its side, and a locking rod (20) for supporting the top wall of the housing (1) is engaged inside the locking hole (19).

2. The sludge dewatering device for wastewater treatment as described in claim 1, characterized in that: The lifting power of the lever (12) is operated manually or by a lifting power device.

3. The sludge dewatering device for wastewater treatment as described in claim 1, characterized in that: The height of the scraper is equal to the inner height of the rectangular container, and the scraper is in contact with the inner bottom of the rectangular container.

4. A method for operating a sludge dewatering device for wastewater treatment, characterized in that: The sludge dewatering device for wastewater treatment as described in claim 1 is used; Pull the lever (12) upwards until the top of the pressure plate (11) contacts the inner wall of the casing (1), then insert the clamping rod (20) into the clamping hole (19) to facilitate the pouring of sludge. Then pour the sludge into the feed inlet (17). After the sludge falls onto the first box (2) and the second box (3), remove the clamping rod (20) from the clamping hole (19), press the lever (12) downwards to squeeze out some of the water in the sludge. The sewage will fall from the drain hole (18) and the through hole (25) in sequence and flow out from the outlet pipe (15). At this time, the water-absorbing plate (13) at the bottom of the pressure plate (11) can absorb the sewage. After repeated squeezing, pull the lever (12) to the top to contact the inner wall of the casing (1), then insert the clamping rod (20) into the clamping hole (19), then open the box door (24) and open the moving port ( 16) pushes the internal moving block (14) to separate the first box (2) and the second box (3). At this time, pull the first pull block (9) and the second pull block (10) respectively. The first pull block (9) and the second pull block (10) respectively drive their respective scrapers to move to the opposite side, so that the sludge inside the first box (2) and the second box (3) can be scraped off onto the fixed plate (23). Close the box door (24) and start the motor (26). At this time, the motor (26) drives the rotating blade (27) to rotate, so that the water in the sludge can be spun dry again. The sewage will flow out from the through hole (25) again. Then, under the action of the spring (22), the sludge will be shaken to achieve the effect of turning over, so that it can be fully dried. After drying, open the box door (24) to take out the sludge.

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