Sludge dewatering device

Abstract

The invention relates to the technical field of sludge dewatering, and discloses a sludge dewatering device which comprises a filter box frame, a pressing plate and a hydraulic cylinder, the interior of the filter box frame is divided into a dewatering area and a feeding area, filter plates are arranged at the positions, corresponding to the dewatering area and the feeding area, of the inner bottom face of the filter box frame, and frame bodies are arranged in the dewatering area and the feeding area; the frame bodies are detachably connected with the filtering box frame, a driving assembly is arranged at one end of the filtering box frame, the multiple frame bodies are all in transmission connection with the driving assembly, a discharging opening is formed in the side, close to the dewatering area, of the filtering box frame, and the driving assembly is used for driving the frame bodies to move towards the discharging opening side. The device is used for solving the problems that in the prior art, when sludge is filled, the sludge is prone to slipping off from a discharging groove plate, the filled sludge is difficult to flatly lay, and the sludge dewatering efficiency is affected.

Description

Technical Field

[0001] The invention relates to the technical field of sludge dewatering, and in particular to a sludge dewatering device. Background Art

[0002] Sludge dewatering is the process of removing moisture from sludge and converting it into semi-solid or solid mud blocks, which can improve the stability of sludge, reduce its odor and putrefaction, and facilitate subsequent utilization or disposal.

[0003] The traditional sludge dewatering device mainly includes a filter box, a pressure plate and a hydraulic cylinder. The sludge in the filter box is dehydrated by squeezing the pressure plate, but the dehydrated sludge is difficult to remove.

[0004] In the prior art, a device for dewatering sludge from environmental pollution, such as the one disclosed in Chinese patent [Publication No.: CN220520340U], includes a housing, a hydraulic cylinder, the output end of the hydraulic cylinder passes through a mounting plate and is connected to a pressure plate; an electric telescopic member, the output end of the electric telescopic member is provided with a push plate; a filter press assembly, fixedly arranged in the housing, the upper surface of the filter press assembly is flush with the housing opening; the filter press assembly includes a fixed body, the upper surface of the fixed body is evenly provided with a plurality of cylindrical cavities; a support cylinder, slidably arranged in the cylindrical cavity; a filter plate, fixed on the upper end of the support cylinder, the filter plate is evenly arranged with filter press holes; a reset spring, sleeved on the support cylinder, the two ends of the reset spring are respectively fixedly connected to the upper surface of the fixed body and the lower surface of the filter plate. By setting the reset spring, the filter plate lifts the dehydrated sludge, and then the dehydrated sludge is taken out by cooperating with the push plate.

[0005] However, when the sludge is filled, it is easy to slide off the discharge chute plate, and the filled sludge is difficult to spread flat, which affects the sludge dewatering efficiency. Summary of the invention

[0006] In view of this, the purpose of the present invention is to provide a sludge dewatering device to solve the problems in the prior art that sludge is easy to slide off the discharge chute plate when loaded, and the loaded sludge is difficult to spread flat, thus affecting the sludge dewatering efficiency.

[0007] The present invention solves the above technical problems by the following technical means: A sludge dewatering device comprises a filter box frame, a pressure plate and a hydraulic cylinder, wherein the filter box frame is divided into a dewatering area and a feeding area, and filter plates are arranged at positions corresponding to the dewatering area and the feeding area on the inner bottom surface of the filter box frame, and frames are arranged in the dewatering area and the feeding area, and the frames are detachably connected to the filter box frame, a driving assembly is arranged at one end of the filter box frame, and a plurality of frames are transmission-connected to the driving assembly, and a discharge port is arranged on a side of the filter box frame close to the dewatering area, and the driving assembly is used to drive the frame to move toward the discharge port.

[0008] By setting the above structure, when loading sludge, the sludge can be loaded into the frame of the loading area, which can effectively prevent the sludge from sliding randomly. And because the loading area and the dehydration area are set separately, the sludge can be spread flat when loading, improving the dehydration effect. When the dehydrated sludge is unloaded, the driving component pushes the frame in the loading area into the dehydration area, and at the same time, the frame in the dehydration area is pushed from the unloading port to the outside of the filter box frame for unloading, effectively speeding up the loading and unloading speeds and improving the sludge dehydration efficiency.

[0009] Furthermore, a slide groove is provided in the filter box frame, and the frame body is slidably clamped in the slide groove. One end of the slide groove is connected with the discharge port, and the frame body can be separated from the filter box frame from the discharge port. The filter box frame is provided with a slot above the loading area, and the slot is connected with the slide groove. The frame body can enter the filter box frame from the slot.

[0010] By providing the above structure, a detachable connection between the frame and the filter box frame is achieved, and the stability of the frame during movement can be ensured, with a simple structure and low maintenance cost.

[0011] Furthermore, a plurality of cleaning components are slidably arranged at the bottom of the filter box frame, and the cleaning components are used to clean the filter plates. A cleaning cavity is arranged between adjacent frames, and the position of the cleaning components corresponds to the position of the cleaning cavity.

[0012] By providing the above structure, after the cleaning assembly cleans the filter plate, the accumulation of sludge in the filter holes of the filter plate can be effectively reduced, thereby further improving the dehydration efficiency.

[0013] Furthermore, the cleaning component includes a cleaning part and a connecting part. A support rod is provided at the bottom of the filter box frame. The cleaning part is slidably provided on the support rod. Multiple cleaning parts are fixedly connected to the connecting part. The connecting part is transmission-connected to the driving component. When the driving component is working, the driving frame and the cleaning component move synchronously.

[0014] By setting the above structure, the cleaning component is slidably set at the bottom of the filter box frame, and when the driving component is working, the driving frame and the cleaning component move synchronously, without manually moving the cleaning component or setting a driver for the cleaning component separately.

[0015] Furthermore, a plurality of air outlets are provided on the cleaning part, a cavity is provided inside the cleaning part, the air outlets are connected to the cavity, a connecting hole is provided at the bottom of the cavity, a positive pressure air source is provided on one side of the filter box frame, and the connecting hole is connected to the positive pressure air source.

[0016] By setting the above structure, the sludge accumulated in the filter plate is blown out by positive pressure jet, so as to avoid the sludge from accumulating in the filter holes of the filter plate, and the blown sludge falls back into the filter box frame, so as to prevent it from being scattered at will.

[0017] Further, a channel is provided in the connecting member. The channel communicates with the connecting hole. An air source interface is provided on the connecting member, and the air source interface communicates with a positive pressure air source.

[0018] By providing the above structure, there is no need to connect pipes between each connecting hole and the positive pressure air source, effectively simplifying the structure of the cleaning assembly.

[0019] Further, the driving assembly includes a driving cylinder. A mounting plate is provided on one side of the filter box frame close to the feeding area. The driving cylinder is fixedly mounted on the mounting plate. The output shaft of the driving cylinder is connected to a driving rod. The driving rod passes through the filter box frame and abuts against the frame body. Adjacent frame bodies abut against each other.

[0020] By providing the above structure, when the driving cylinder works, the frame body and the cleaning assembly can be moved toward the discharge port side.

[0021] Further, a temporary storage area is provided between the dehydration area and the feeding area.

[0022] By providing the above structure, the sludge that has not been dehydrated can be temporarily stored, avoiding the situation where the sludge loading is not timely, which affects the sludge dehydration efficiency.

[0023] Further, a water tank is provided at the bottom of the filter box frame, and the water tank is used to hold sewage.

[0024] By providing the above structure, the sewage is collected for subsequent treatment.

[0025] Further, support cross bars are provided between adjacent filter plates at the bottom inside the filter box.

[0026] By providing the above structure, the strength of the filter mesh frame is increased to ensure that it can withstand the pressure of the pressing plate.

[0027] Advantages of the present invention: 1. By providing the filter box frame, the frame body and the driving assembly in the present invention, when loading the sludge, the sludge can be loaded into the frame body in the feeding area, effectively avoiding the random sliding of the sludge. And since the feeding area and the dehydration area are separately arranged, the sludge can be laid flat when loading the sludge, improving the dehydration effect. When unloading the dehydrated sludge, the driving assembly pushes the frame body in the feeding area into the dehydration area, and at the same time, the frame body in the dehydration area is pushed out of the filter box frame from the discharge port for unloading, effectively accelerating the feeding and unloading speeds and improving the sludge dehydration efficiency.

[0028] 2. By providing the cleaning assembly in the present invention, after the cleaning assembly cleans the filter plate, the situation that sludge accumulates in the filter holes of the filter plate can be effectively reduced, further improving the dehydration efficiency.

[0029] 3. In the present invention, by drivingly connecting the connecting member with the driving assembly, when the driving assembly operates, the driving frame and the cleaning assembly move synchronously, eliminating the need for manual movement of the cleaning assembly or the need to separately provide a driver for the cleaning assembly.

[0030] 4. In the present invention, by providing a positive pressure air source and air outlet holes, the sludge accumulated in the filter plate is blown out by means of positive pressure jetting, preventing sludge from accumulating in the filter holes of the filter plate, and the blown sludge falls back into the filter box frame, preventing it from scattering randomly. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 is a schematic structural view of a sludge dewatering device of the present invention; Figure 2 is a schematic sectional structural view of a sludge dewatering device of the present invention; Figure 3 is a schematic exploded structural view of a sludge dewatering device of the present invention; Figure 4 is a schematic sectional structural view of the cleaning assembly in a sludge dewatering device of the present invention; Wherein, 1. Filter box frame; 11. Filter plate; 12. Discharge opening; 13. Slide groove; 14. Groove opening; 15. Support rod; 16. Mounting plate; 17. Water tank; 18. Support cross bar; 21. Pressing plate; 22. Hydraulic cylinder; 23. Mounting frame; 31. Dewatering area; 32. Feeding area; 33. Temporary storage area; 4. Frame; 41. Cleaning chamber; 5. Driving assembly; 51. Driving cylinder; 52. Driving rod; 6. Cleaning assembly; 61. Cleaning member; 611. Air outlet hole; 612. Cavity; 613. Connecting hole; 62. Connecting member; 621. Channel; 622. Air source interface. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0032] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0033] Such as Figures 1 - 4As shown, a sludge dewatering device of the present invention comprises a filter box frame 1, a pressing plate 21 and a hydraulic cylinder 22. The hydraulic cylinder 22 is installed above the filter box frame 1 through a mounting frame 23, and the pressing plate 21 is fixedly connected to the output shaft of the hydraulic cylinder 22. The filter box frame 1 is divided into a dewatering area 31 and a feeding area 32. The inner bottom surface of the filter box frame 1 is provided with a filter plate 11 at positions corresponding to the dewatering area 31 and the feeding area 32. The dewatering area 31 and the feeding area 32 are provided with a frame 4. The frame 4 is detachably connected to the filter box frame 1. A driving assembly 5 is provided at one end of the filter box frame 1. A plurality of frames 4 are all connected to the driving assembly 5 in transmission. A discharge port 12 is provided on the side of the filter box frame 1 close to the dewatering area 31. The driving assembly 5 is used to drive the frame 4 to move toward the discharge port 12.

[0034] When the driving component 5 is working, it pushes multiple frames 4 to move synchronously toward the discharge port 12. The driving component 5 pushes the frames 4 in the loading area 32 into the dehydration area 31. At the same time, the frames 4 in the dehydration area 31 are pushed from the discharge port 12 to the outside of the filter box frame 1 for unloading. After unloading, the frames 4 are transported to the loading area 32, which effectively speeds up the loading and unloading speeds and improves the sludge dehydration efficiency.

[0035] When the sludge is loaded, the sludge is loaded into the frame 4 of the loading area 32, which can effectively prevent the sludge from sliding down at will. And because the loading area 32 and the dehydration area 31 are separately arranged, the sludge can be spread flat when the sludge is loaded, thereby improving the dehydration effect.

[0036] In this embodiment, a slide groove 13 is provided in the filter box frame 1, and the frame 4 is slidably clamped in the slide groove 13. One end of the slide groove 13 is connected to the discharge port 12, and the frame 4 can be separated from the filter box frame 1 from the discharge port 12. The filter box frame 1 is provided with a notch 14 above the loading area 32, and the notch 14 is connected to the slide groove 13. The frame 4 can enter the filter box frame 1 from the notch 14. The detachable connection between the frame 4 and the filter box frame 1 is achieved, and the stability of the frame 4 during the movement process can be ensured, the structure is simple, and the maintenance cost is low. In some other embodiments, a slide bar can also be provided on the filter box frame 1, and the frame 4 can be slidably connected to the slide bar, but it is more troublesome to load the filter box frame 1.

[0037] In this embodiment, a plurality of cleaning components 6 are slidably arranged at the bottom of the filter box frame 1. The cleaning components 6 are used to clean the filter plate 11. A cleaning cavity 41 is arranged between adjacent frames 4, and the positions of the cleaning components 6 correspond to the positions of the cleaning cavity 41. The cleaning cavity 41 is used to provide a cleaning space for the cleaning components 6 to prevent the filter plate 11 from being blocked by the sludge in the frame 4 when the cleaning components 6 are cleaning. It should be noted that since there is no frame blocking behind the frame 4 close to the driving component 5, the cleaning component corresponding to this frame 4 can be directly arranged behind this frame 4. After the cleaning component 6 cleans the filter plate 11, the situation of sludge accumulation in the filter holes of the filter plate 11 can be effectively reduced, and the dehydration efficiency can be further improved.

[0038] In this embodiment, the cleaning component 6 includes a cleaning part 61 and a connecting part 62. A support rod 15 is arranged at the bottom of the filter box frame 1. The cleaning part 61 is slidably arranged on the support rod 15. A plurality of cleaning parts 61 are fixedly connected to the connecting part 62, and the connecting part 62 is in transmission connection with the driving component 5. When the driving component 5 works, the frame 4 and the cleaning component 6 move synchronously. In some other embodiments, the cleaning part 61 can also be directly moved manually or driven independently.

[0039] In this embodiment, a plurality of air outlet holes 611 are formed in the cleaning part 61. A cavity 612 is formed in the cleaning part 61. The air outlet holes 611 are communicated with the cavity 612. A connecting hole 613 is formed at the bottom of the cavity 612. A positive pressure air source is arranged on one side of the filter box frame 1. The connecting hole 613 is communicated with the positive pressure air source. The sludge accumulated in the filter plate 11 is blown out by the way of positive pressure jet, so as to prevent the sludge from accumulating in the filter holes of the filter plate 11. Moreover, the blown sludge falls back into the filter box frame 1, which can prevent it from scattering randomly. In some other embodiments, the form of spraying water by a nozzle can also be used for cleaning, but it wastes water resources relatively.

[0040] In this embodiment, a channel 621 is formed in the connecting part 62. The channel 621 is communicated with the connecting hole 613. An air source interface 622 is arranged on the connecting part 62. The air source interface 622 is communicated with the positive pressure air source through a hose. There is no need to connect pipelines between each connecting hole 613 and the positive pressure air source, effectively simplifying the structure of the cleaning component 6.

[0041] In this embodiment, the driving assembly 5 includes a driving cylinder 51. An installation plate 16 is provided on one side of the filter box frame 1 close to the feeding area 32. The driving cylinder 51 is fixedly installed on the installation plate 16. The output shaft of the driving cylinder 51 is connected with a driving rod 52. The driving rod 52 passes through the filter box frame 1 and abuts against the frame body 4. The adjacent frame bodies 4 abut against each other. When the driving cylinder 51 works, the frame body 4 and the cleaning assembly 6 can be moved towards the discharge port 12 side. In some other embodiments, a motor and a gear can also be used to drive the driving rod 52 to move. This can effectively shorten the length of the driving assembly 5, but the control accuracy is relatively low, and it can be selected according to actual needs.

[0042] In this embodiment, a temporary storage area 33 is provided between the dehydration area 31 and the feeding area 32, which can temporarily store the sludge that has not been dehydrated, avoiding the situation that the sludge loading is not timely and affecting the sludge dehydration efficiency.

[0043] In this embodiment, a water tank 17 is provided at the bottom of the filter box frame 1. The water tank 17 is used to hold sewage and collect the sewage for subsequent treatment.

[0044] In this embodiment, support cross bars 18 are provided between adjacent filter plates 11 at the inner bottom of the filter box frame 1 to increase the strength of the filter mesh frame to ensure that it can withstand the pressure of the pressing plate 21.

[0045] The working principle of the present invention is as follows: First, sludge is loaded into the frame bodies 4 in both the feeding area 32 and the temporary storage area 33.

[0046] Subsequently, when the driving cylinder 51 works, after the driving rod 52 abuts against the frame body 4 in the feeding area 32, it pushes the frame body 4 towards the discharge port 12. At the same time, since the frame bodies 4 abut against each other, the frame bodies 4 in the temporary storage area 33 and the dehydration area 31 move synchronously until the frame body 4 in the temporary storage area 33 moves to the dehydration area 31. During this process, the frame body 4 in the feeding area 32 moves to the temporary storage area 33, and the frame body 4 in the dehydration area 31 is pushed out of the filter box frame 1 from the discharge port 12 for discharging. After the discharging is completed, the frame body 4 enters the feeding area 32 of the filter box frame 1 from the notch 14.

[0047] Then, control the hydraulic cylinder 22 to work. The pressing plate 21 squeezes the sludge in the frame body 4 in the dehydration area 31 to dehydrate the sludge and fills the sludge into the frame body 4 in the feeding area 32, and the work can be cycled in this way.

[0048] The above embodiments are only used to illustrate the technical solutions of the present invention and not to limit them. Although the present invention has been described in detail with reference to the preferred embodiments, those of ordinary skill in the art should understand that the technical solutions of the present invention can be modified or equivalently replaced without departing from the spirit and scope of the technical solutions of the present invention, and they should all be covered within the scope of the claims of the present invention. The technologies, shapes, and structures not described in detail in the present invention are all well-known technologies.

Claims

1. A sludge dewatering device, comprising a filter box frame (1), a pressing plate (21) and a hydraulic cylinder (22), characterized in that: The filter box frame (1) is divided into a dehydration area (31) and a feeding area (32). The inner bottom surface of the filter box frame (1) is provided with filter plates (11) at positions corresponding to the dehydration area (31) and the feeding area (32). The dehydration area (31) and the feeding area (32) are provided with frames (4). The frames (4) are detachably connected to the filter box frame (1). A driving assembly (5) is provided at one end of the filter box frame (1). A plurality of frames (4) are transmission-connected to the driving assembly (5). A discharge port (12) is provided on a side of the filter box frame (1) close to the dehydration area (31). The driving assembly (5) is used to drive the frame (4) to move toward the discharge port (12).

2. A sludge dewatering device according to claim 1, characterized in that: The filter box frame (1) is provided with a slide groove (13), the frame body (4) is slidably mounted in the slide groove (13), one end of the slide groove (13) is connected to a discharge port (12), and the frame body (4) can be separated from the filter box frame (1) from the discharge port (12); the filter box frame (1) is provided with a notch (14) above the loading area (32), the notch (14) is connected to the slide groove (13), and the frame body (4) can enter the filter box frame (1) from the notch (14).

3. A sludge dewatering device according to claim 1, characterized in that: A plurality of cleaning components (6) are slidably disposed at the bottom of the filter box frame (1), the cleaning components (6) being used to clean the filter plate (11), a cleaning cavity (41) being disposed between adjacent frames (4), and the position of the cleaning components (6) corresponds to the position of the cleaning cavity (41).

4. A sludge dewatering device according to claim 3, characterized in that: The cleaning component (6) comprises a cleaning piece (61) and a connecting piece (62); a support rod (15) is provided at the bottom of the filter box frame (1); the cleaning piece (61) is slidably arranged on the support rod (15); a plurality of cleaning pieces (61) are fixedly connected to the connecting piece (62); the connecting piece (62) is transmission-connected to the driving component (5); when the driving component (5) is in operation, the driving frame (4) and the cleaning component (6) are synchronously moved.

5. A sludge dewatering device according to claim 4, characterized in that: The cleaning component (61) is provided with a plurality of air outlet holes (611), a cavity (612) is provided in the cleaning component (61), the air outlet holes (611) are connected to the cavity (612), a connecting hole (613) is provided at the bottom of the cavity (612), a positive pressure air source is provided on one side of the filter box frame (1), and the connecting hole (613) is connected to the positive pressure air source.

6. A sludge dewatering device according to claim 5, characterized in that: The connecting piece (62) is provided with a channel (621), the channel (621) is communicated with the connecting hole (613), and the connecting piece (62) is provided with an air source interface (622), the air source interface (622) is communicated with a positive pressure air source.

7. A sludge dewatering device according to claim 5, characterized in that: The driving assembly (5) comprises a driving cylinder (51); a mounting plate (16) is provided on one side of the filter box frame (1) close to the loading area (32); the driving cylinder (51) is fixedly mounted on the mounting plate (16); an output shaft of the driving cylinder (51) is connected to a driving rod (52); the driving rod (52) passes through the filter box frame (1) and abuts against a frame body (4); adjacent frames (4) abut against each other; and the connecting member (62) is fixedly connected to the driving rod (52).

8. The sludge dewatering device according to claim 1, characterized in that: A temporary storage area (33) is provided between the dehydration area (31) and the loading area (32).

9. The sludge dewatering device according to claim 1, characterized in that: A water tank (17) is provided at the bottom of the filter box frame (1), and the water tank (17) is used to hold sewage.

10. The sludge dewatering device according to claim 1, characterized in that: A supporting horizontal bar (18) is arranged at the bottom of the filter box frame (1) between adjacent filter plates (11).

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