Sludge dewatering device

Abstract

The utility model relates to dewatering equipment technical field, specifically, relate to a sludge dewatering device, including the casing, be equipped with drying cylinder in the casing, one end of drying cylinder is equipped with the inlet, the other end is equipped with the discharge gate, the inlet is equipped with the feeding cylinder, the one end of feeding cylinder is by the inlet and extends to drying cylinder, be equipped with the rotary lever in feeding cylinder, be equipped with spiral blade on rotary lever, the one end of feeding cylinder that extends to drying cylinder is equipped with the opening, be equipped with extruding disc at the opening, be equipped with a plurality of extruding holes for discharging materials on extruding disc, the side wall of feeding cylinder is equipped with the guide inlet, be equipped with the feeding hopper at the guide inlet, the inner wall of feeding cylinder is equipped with the baffle ring behind extruding disc, the outer wall of feeding cylinder is equipped with the big nut of opening end position threadedly connected. Through the extruding hole on the extruding disc and spiral blade in the feeding cylinder, effectively disperse the sludge into smaller lumps, and convey it to drying cylinder, thereby improving the dehydration efficiency and drying uniformity.

Description

Technical Field

[0001] This utility model relates to the field of dewatering equipment technology, specifically to a sludge dewatering device. Background Technology

[0002] In the field of sludge treatment, in order to reduce the moisture content of sludge, reduce its volume, and facilitate transportation and disposal, a heated cylinder is often used for dewatering and drying. Such devices typically feed sludge into the cylinder from the feed end, and the cylinder wall is heated by the heat generated by the combustion of gas. The rotation of the cylinder and the agitation of the material bring the sludge into contact with the high-temperature cylinder wall, thereby evaporating the moisture and achieving dewatering.

[0003] In existing technologies, sludge fed through the feed end is generally in clumps, but these clumps are mostly irregular in shape and vary significantly in size. When the clumps are too large or have a dense internal structure, it is difficult to break them up completely in a short time, resulting in uneven heating and slow evaporation of internal moisture, thus affecting dewatering efficiency. At the same time, excessively large clumps increase the mechanical load on the equipment during the breaking-up process, prolonging the processing time and increasing energy consumption, so improvements are needed. Summary of the Invention

[0004] The purpose of this invention is to provide a sludge dewatering device to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: A sludge dewatering device includes a shell, inside which is a drying cylinder extending from both ends. One end of the drying cylinder has a feed inlet and the other end has a discharge outlet. A feeding cylinder is provided at the feed inlet, and one end of the feeding cylinder extends into the drying cylinder from the feed inlet. A rotating rod is provided inside the feeding cylinder, and a spiral blade is provided outside the rotating rod. The end of the feeding cylinder extending into the drying cylinder has an opening, and a pressing plate is provided at the opening. The pressing plate has multiple pressing holes for discharging materials. A guide port is opened on the side wall of the feeding cylinder outside the drying cylinder, and a feed hopper is provided at the guide port.

[0006] Furthermore, a retaining ring is provided on the inner wall of the feeding cylinder behind the extrusion plate, and a large nut is threaded onto the outer wall of the feeding cylinder at the open end. The inner side of the large nut is provided with a boss for pressing the extrusion plate.

[0007] Furthermore, multiple dispersing blades are provided on the inner wall of the drying cylinder near the feed inlet along its axial direction. The multiple dispersing blades are evenly distributed around the circumference of the drying cylinder. The dispersing blades have a comb-like structure, including a transverse connecting part and several toothed blades distributed along one side of the connecting part.

[0008] Furthermore, the inner wall of the drying cylinder is provided with multiple sets of mounting blocks corresponding to the dispersing blades. The mounting blocks are provided with insertion holes. The two ends of the transverse connecting part of the dispersing blades are provided with insertion rods. The two ends of the insertion rods are provided through the corresponding insertion holes. The threaded connection of the ends of the insertion rods that pass through the insertion holes is provided with anti-detachment caps.

[0009] Furthermore, multiple guide blades are evenly arranged along the circumference on the inner wall of the drying cylinder near the discharge port. Multiple L-shaped spraying blades are arranged along the axial direction on the inner wall of the drying cylinder between the dispersing blades and the guide blades. The multiple L-shaped spraying blades are evenly distributed along the circumference of the drying cylinder, and multiple holes are evenly distributed on the spraying blades.

[0010] Furthermore, a cylindrical tube is provided at the discharge port, and a square hopper connected to the inside of the cylindrical tube is provided outside the cylindrical tube. Circular holes are provided at both ends of the cylindrical tube. The discharge port is set into the cylindrical tube through the circular hole at one end, and a dehumidification fan is provided at the circular hole at the other end.

[0011] Furthermore, a burner is installed inside the casing at the bottom of the drying cylinder.

[0012] Compared with the prior art, the beneficial effects of this utility model are: 1. This utility model effectively disperses clumps of sludge into smaller clumps by using spiral blades inside the feeding cylinder and extrusion holes on the extrusion disc, and then transports them into the drying cylinder, thereby improving dewatering efficiency and drying uniformity.

[0013] This invention features a drying drum equipped with dispersing blades that rotate and swing with the drum body. This ensures that the sludge is fully agitated and evenly heated when it first enters the drum. Through the dispersing blades and their perforated design, the initially dried sludge can be evenly dispersed, increasing the contact area between the material and the drum wall, promoting rapid and uniform dehydration of the sludge, and improving drying efficiency and product quality. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall structure of a sludge dewatering device according to the present invention.

[0015] Figure 2 This is a cross-sectional structural diagram of the feeding cylinder and its components in this utility model.

[0016] Figure 3 This is a schematic diagram of the structure of the drying cylinder cut open in this utility model.

[0017] Figure 4 This is a schematic diagram of the structure of the disintegrating blade in this utility model.

[0018] Figure 5 This is a schematic diagram of the spraying blade in this utility model.

[0019] Figure 6 This is a schematic diagram of the structure of the burner inside the shell of this utility model.

[0020] The meanings of the labels in the diagram are as follows: 100, shell; 101, drying cylinder; 102, feed inlet; 103, discharge outlet; 104, feeding cylinder; 105, rotating rod; 106, spiral blade; 107, extrusion disc; 108, extrusion hole; 109, feed hopper; 110, retaining ring; 111, large nut; 112, boss; 113, support leg; 200, dispersing blade; 201, mounting block; 202, insert rod; 203, anti-detachment cap; 204, guide blade; 205, L-shaped spraying blade; 206, hole; 300, cylindrical cylinder; 301, discharge hopper; 302, dehumidifying fan; 303, burner; 400, roller ring; 401, support roller; 402, gear ring. Detailed Implementation

[0021] To further understand the content of this utility model, a detailed description of this utility model will be provided in conjunction with the accompanying drawings and embodiments. It should be understood that the embodiments are merely illustrative of this utility model and are not intended to limit it.

[0022] The following is in conjunction with the appendix Figures 1-6 This embodiment will be described in further detail.

[0023] Please see Figures 1-6 This embodiment of a sludge dewatering device includes a housing 100, inside which a drying cylinder 101 is installed. In actual use, the two ends of the drying cylinder 101 extend out of the two ends of the housing 100, respectively. One end of the drying cylinder 101 is provided with a feed inlet 102, and the other end is provided with a discharge outlet 103. A feeding cylinder 104 is connected to the feed inlet 102, and one end of the feeding cylinder 104 passes through the feed inlet 102 and extends into the interior of the drying cylinder 101, so that the discharge end of the feeding cylinder 104 can directly feed the material into the working area inside the drying cylinder 101.

[0024] Specifically, the feeding cylinder 104 has a guide port on the side wall outside the drying cylinder 101. A feed hopper 109 is fixedly installed at the guide port. The feed hopper 109 is used to receive the sludge supplied from the outside and guide it into the feeding cylinder 104. The feed hopper 109 and the feeding cylinder 104 are connected by welding to ensure sealing and prevent sludge leakage during the feeding process.

[0025] In this embodiment, a rotating rod 105 is rotatably mounted inside the feeding cylinder 104 along its axial direction. A motor is provided at one end of the feeding cylinder 104 outside the drying cylinder 101, and the motor drives the rotating rod 105 to rotate. A spiral blade 106 is fixed outside the rotating rod 105, and the spiral blade 106 is continuously arranged along the length direction of the feeding cylinder 104. When the rotating rod 105 rotates, the spiral blade 106 can push the sludge in the feed hopper 109 along the direction of the feeding cylinder 104 to the discharge end, thereby realizing automatic feeding.

[0026] The feeding cylinder 104 has an opening at one end that extends into the drying cylinder 101, facing the interior of the drying cylinder 101. An extrusion plate 107 is fixedly installed at the opening, and multiple extrusion holes 108 are evenly arranged on the extrusion plate 107. In this embodiment, three circular extrusion holes 108 are provided on the extrusion plate 107, which are distributed on the extrusion plate 107. The diameter of the extrusion holes 108 is designed according to the size of the required sludge clumps. When the spiral blades 106 push the sludge to the extrusion plate 107, the sludge is forced to be squeezed out through the extrusion holes 108, forming small clumps with basically the same shape and size. Compared with the existing direct conveying of large or irregular sludge, this structure can make the sludge clumps stable and uniform in shape, so that they are heated more fully in the subsequent heating and dehydration process, and the internal moisture is more easily evaporated, thus improving the dehydration efficiency.

[0027] In this embodiment, to ensure the stable installation of the extrusion disc 107, a retaining ring 110 is fixedly provided on the inner wall of the feeding cylinder 104 along its circumference, located behind the extrusion disc 107. The retaining ring 110 provides positioning support for the extrusion disc 107. Simultaneously, a large nut 111 located at the open end is threadedly connected to the outer wall of the feeding cylinder 104. An annular boss 112 is formed on the inner side of the large nut 111. After the large nut 111 is tightened, the boss 112 can press against the outer edge of the extrusion disc 107. Combined with the retaining ring 110, this ensures the extrusion disc 107 is firmly fixed between the retaining ring 110 and the boss 112. This installation method not only ensures the stability of the extrusion disc 107, but also allows for easy disassembly and high maintenance efficiency when cleaning or replacing the extrusion disc 107, as only the large nut 111 needs to be unscrewed.

[0028] Please see Figures 3-5 In this embodiment, multiple dispersing blades 200 are provided along the axial direction on the inner wall of the drying cylinder 101 near the feed inlet 102. These multiple dispersing blades 200 are evenly distributed circumferentially along the drying cylinder 101. (The last part, "in combination with...", appears to be a fragment and doesn't need a direct translation.) Figure 4As shown, the dispersing blade 200 adopts a comb-like structure, including a transverse connecting part and several toothed blades arranged along one side of the transverse connecting part. Multiple sets of mounting blocks 201 corresponding to the dispersing blade 200 are provided on the inner wall of the drying cylinder 101. The mounting blocks 201 are fixed to the inner wall of the drying cylinder 101 by welding. The mounting blocks 201 are provided with insertion holes. Insert rods 202 are provided at both ends of the transverse connecting part of the dispersing blade 200. The two ends of the insert rods 202 are provided through the corresponding insertion holes. The threaded end of the insert rod 202 that passes through the insertion hole is connected with an anti-detachment cap 203. There is a gap between the circumferential side wall of the insert rod 202 and the insertion hole, so that the dispersing blade 200 can swing to a certain extent when the drying cylinder 101 rotates. This oscillation allows the blades to more flexibly break up clumps of sludge. The comb-like structure of the dispersing blades 200 effectively increases the contact area and points of contact with the sludge, allowing the sludge to be more fully dispersed and dispersed during the rotation of the drying drum 101. This prevents the sludge from clumping together, promotes uniform turning and heating of the material, and at the same time, allows the sludge to be more fully dispersed and turned, increasing the contact area between the sludge and the heating drum wall, thereby significantly improving the dewatering efficiency of the sludge that just enters the drying drum 101.

[0029] In this embodiment, multiple guide blades 204 are uniformly fixed along the circumferential direction on the inner wall of the drying cylinder 101 near the discharge port 103. Multiple L-shaped spraying blades 205 are fixed along the axial direction on the inner wall of the drying cylinder 101 between the dispersing blades 200 and the guide blades 204. The multiple L-shaped spraying blades 205 are uniformly distributed along the circumference of the drying cylinder 101, and multiple holes 206 are uniformly distributed on the surface of the L-shaped spraying blades 205. When the material is turned over, the holes 206 can reduce the weight of the blades and create local airflow disturbance when the material is turned over, accelerating the evaporation of moisture from the material surface. The guide blades 204 push the dewatered sludge axially along the cylinder to the discharge port 103 for easy discharge.

[0030] Please see Figures 1-6 In this embodiment, a cylindrical tube 300 is installed at the discharge port 103. A feeding hopper 301 communicating with the interior of the cylindrical tube 300 is fixedly installed on the cylindrical tube 300. Circular holes are provided at both ends of the cylindrical tube 300. The discharge port 103 of the drying cylinder 101 extends into the cylindrical tube 300 through one of the circular holes, allowing the dried sludge to fall into the cylindrical tube 300 from the discharge port 103 and then be collected by the feeding hopper 301. A dehumidifying fan 302 is installed at the other circular hole. The dehumidifying fan 302 is used to extract the hot and humid gas generated inside the drying cylinder 101 during the drying process, reducing the humidity inside the cylinder and accelerating the dehydration process.

[0031] Please see Figure 6In this embodiment, a burner 303 is installed inside the housing 100, located below the drying cylinder 101. The burner 303 is arranged along the length of the drying cylinder 101 and is fixedly connected to the bottom of the housing 100 via a bracket. The burner 303 has multiple nozzles distributed along its length, facing the outer wall of the bottom of the drying cylinder 101. After being ignited by external natural gas or liquefied petroleum gas, the burner 303 directly heats the cylinder wall of the drying cylinder 101, causing the cylinder wall temperature to rise rapidly and stabilize within a set range. This embodiment reduces heat transfer steps through direct heating, resulting in higher thermal efficiency, faster heating, and direct contact between the cylinder wall and the sludge clumps, leading to rapid moisture evaporation, improved dehydration efficiency, and a shorter processing cycle. Simultaneously, the burner 303 is evenly distributed along the length of the drying cylinder 101, ensuring uniform heating and preventing localized overheating.

[0032] Please see Figure 1 In this embodiment, roller rings 400 are respectively provided on the outer side wall of the extended end of the drying cylinder 101 along its circumference. The roller rings 400 are fixedly installed on the outer wall of the drying cylinder 101. The housing 100 is provided with support rollers 401 that cooperate with the corresponding roller rings 400. The support rollers 401 are installed on the housing 100 through bearings, and can rotate freely and support the rotation of the roller rings 400, so that the drying cylinder 101 maintains stable operation when rotating.

[0033] Among them, a gear ring 402 is fixedly provided on the outer wall of the drying cylinder 101 near the feed inlet 102. The gear ring 402 surrounds the periphery of the drying cylinder 101. A motor is installed on the outside of the housing 100. The output end of the motor is provided with a drive gear through a reduction gearbox. The drive gear meshes with the gear ring 402, thereby realizing the rotation drive of the drying cylinder 101.

[0034] In this embodiment, in order to ensure that the material inside the drying cylinder 101 can be discharged smoothly, the bottom of the shell 100 is provided with multiple support legs 113. By adjusting the height of the support legs 113, the tilt angle of the entire shell 100 and the drying cylinder 101 can be adjusted so that the axis of the drying cylinder 101 tilts from the feed inlet 102 end to the discharge outlet 103 end. In actual use, the tilt angle of the drying cylinder 101 is generally set between 3° and 5°, which can ensure that the material moves smoothly to the lower end under the action of gravity, preventing accumulation and blockage, and also avoid the material flow rate being too fast to affect the dehydration effect, so as to achieve stable and efficient operation of the dehydration process.

[0035] In summary, the above description is only a preferred embodiment of the present utility model. All equivalent changes and modifications made within the scope of the patent application of the present utility model shall fall within the scope of the patent of the present utility model.

Claims

1. A sludge dewatering device, comprising a housing (100), characterized in that: The shell (100) is provided with a drying cylinder (101) extending from both ends. One end of the drying cylinder (101) is provided with a feed inlet (102) and the other end is provided with a discharge outlet (103). A feeding cylinder (104) is provided at the feed inlet (102). One end of the feeding cylinder (104) extends into the drying cylinder (101) from the feed inlet (102). A rotating rod (105) is provided inside the feeding cylinder (104). A spiral blade (106) is provided outside the rotating rod (105). One end of the feeding cylinder (104) extending into the drying cylinder (101) is provided with an opening. An extrusion plate (107) is provided at the opening. The extrusion plate (107) is provided with multiple extrusion holes (108) for discharging materials. A guide port is provided on the side wall of the feeding cylinder (104) located outside the drying cylinder (101). A feed hopper (109) is provided at the guide port.

2. The sludge dewatering device according to claim 1, characterized in that: The inner wall of the feeding cylinder (104) is provided with a retaining ring (110) located behind the extrusion plate (107), and the outer wall of the feeding cylinder (104) is threaded with a large nut (111) located at the open end. The inner side of the large nut (111) is provided with a boss (112) for pressing the extrusion plate (107).

3. The sludge dewatering device according to claim 1, characterized in that: Multiple dispersing blades (200) are provided on the inner wall of the drying cylinder (101) near the feed inlet (102) along its axial direction. The multiple dispersing blades (200) are evenly distributed around the drying cylinder (101). The dispersing blades (200) have a comb-like structure, including a transverse connecting part and several toothed blades distributed along one side of the connecting part.

4. The sludge dewatering device according to claim 3, characterized in that: The inner wall of the drying cylinder (101) is provided with multiple sets of mounting blocks (201) corresponding to the dispersing blades (200). The mounting blocks (201) are provided with insertion holes. The two ends of the transverse connecting part of the dispersing blades (200) are provided with insertion rods (202). The two ends of the insertion rods (202) are provided through the corresponding insertion holes. The threaded connection of the end of the insertion rods (202) through the insertion holes is provided with anti-detachment caps (203).

5. The sludge dewatering device according to claim 3, characterized in that: Multiple guide blades (204) are evenly arranged along the circumferential direction on the inner wall of the drying cylinder (101) near the discharge port (103). Multiple L-shaped spraying blades (205) are arranged along the axial direction on the inner wall of the drying cylinder (101) between the dispersing blades (200) and the guide blades (204). The multiple L-shaped spraying blades (205) are evenly distributed along the circumference of the drying cylinder (101), and multiple holes (206) are evenly arranged on the L-shaped spraying blades (205).

6. The sludge dewatering device according to claim 1, characterized in that: A cylindrical tube (300) is provided at the discharge port (103). A feeding hopper (301) connected to the inside of the cylindrical tube (300) is provided outside the cylindrical tube (300). Circular holes are provided at both ends of the cylindrical tube (300). The discharge port (103) extends into the cylindrical tube (300) through the circular hole at one end. A dehumidifying fan (302) is provided at the circular hole at the other end.

7. The sludge dewatering device according to claim 1, characterized in that: The housing (100) is equipped with a burner (303) located at the bottom of the drying cylinder (101).

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