Horizontal spiral centrifuge

Abstract

The utility model relates to the technical field of centrifugal machines, in particular to a horizontal type spiral centrifugal machine which comprises a horizontal type spiral centrifugal machine body, a material distributing mechanism and a plurality of storage pipes are arranged below the horizontal type spiral centrifugal machine body, and the interior of the material distributing mechanism is communicated and is arranged below a slag discharging opening of the horizontal type spiral centrifugal machine body in an opposite mode. The multiple storage pipes are arranged beside the material distributing mechanism in a communicating mode, the multiple storage pipes are all installed at the bottom of the support, and the top of the support is connected to a frame of the horizontal spiral centrifugal machine body; a blocking mechanism is arranged at one end, close to the distributing mechanism, of the storage pipe, an extruding mechanism is arranged at the other end of the storage pipe, and the extruding mechanism and the blocking mechanism are matched to extrude sludge; according to the utility model, the secondary dewatering structure is arranged to receive sludge output from the horizontal spiral centrifuge body, and the sludge is extruded to discharge moisture under the action of the secondary dewatering structure, so that efficient dewatering treatment of the sludge is realized, and further dried sludge is obtained; the sludge column can be conveniently discharged, and the working time is saved.

Description

Technical Field

[0001] This utility model relates to the field of centrifuge technology, and in particular to a horizontal spiral centrifuge. Background Technology

[0002] Horizontal screw centrifuges utilize the centrifugal force generated by the high-speed rotation of the drum to cause solid particles in the mixture to settle towards the drum wall, while the liquid forms an inner liquid ring in the central area of ​​the drum under the influence of centrifugal force. A certain speed difference exists between the screw conveyor and the drum, allowing the screw conveyor to continuously push the solid particles settled on the drum wall towards the smaller end of the drum, from which they are discharged through the solids outlet.

[0003] Sludge discharged from the discharge port of a horizontal screw centrifuge is typically treated through methods such as landfill, incineration, composting, anaerobic digestion, land application, and building material utilization. Regardless of the treatment method, the sludge discharged from the discharge port needs to be transported to the next process step.

[0004] After centrifugation and dewatering in a horizontal screw centrifuge, most of the water in the sludge is separated. The sludge is no longer a flowing liquid but has a certain shape and hardness, similar to damp soil, and has a certain degree of plasticity. Even though the sludge treated by the horizontal screw centrifuge still contains some moisture, it needs to be dried again.

[0005] Currently, commonly used sludge dewatering methods include natural drying and mechanical dewatering. Natural drying involves spreading the sludge flat on an open, well-ventilated surface (such as a sludge drying bed), utilizing natural sunlight and airflow to allow the moisture in the sludge to evaporate naturally. This method requires a large space, and to accelerate the drying process, the sludge needs to be turned over periodically, making the operation relatively cumbersome. Mechanical dewatering uses mechanical pressure to squeeze the water out of the sludge. Common equipment includes plate and frame filter presses and chamber filter presses. These utilize a combination of filter plates and filter cloth, using high pressure to force the water in the sludge through the filter cloth, thus achieving further dewatering. The aforementioned mechanical equipment is large in size and expensive, increasing the costs for businesses. Utility Model Content

[0006] The purpose of this invention is to provide a horizontal screw centrifuge that solves the problem that horizontal screw centrifuges cannot fully dry the discharged sludge.

[0007] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0008] A horizontal screw centrifuge includes a main body, a distributing mechanism and multiple storage pipes disposed below the main body, the distributing mechanism being internally interconnected and positioned directly below the sludge discharge port of the main body, the multiple storage pipes being interconnected and positioned beside the distributing mechanism, and all storage pipes being installed at the bottom of a support frame, the top of which is connected to the frame of the main body; a baffle mechanism is disposed at one end of the storage pipes near the distributing mechanism, and a squeezing mechanism is disposed at the other end, the squeezing mechanism and the baffle mechanism cooperating to squeeze the sludge.

[0009] Furthermore, the storage tube includes a first half-tube and a second half-tube with a cross-section in the shape of "(", one side of the first half-tube is hinged to one side of the second half-tube, and channels are provided on the side walls of the first half-tube and the second half-tube, and filter cloth is provided on the inner surfaces of the first half-tube and the second half-tube.

[0010] Furthermore, a sleeve is provided at the top of the second half-tube, and the sleeve is fitted onto the bracket; a first telescopic cylinder is provided on the side of each storage tube, the first telescopic cylinder is installed on the bracket, and the telescopic end of the first telescopic cylinder is connected to the first half-tube.

[0011] Furthermore, the extrusion mechanism includes an extrusion plate, a threaded column, and an internally threaded tube. The threaded column is fixedly disposed on the side of the extrusion plate, the internally threaded tube is threadedly sleeved on the threaded column, and a sprocket is sleeved around the internally threaded tube. The sprocket is connected to the sprocket on the power output shaft of the first motor via a chain.

[0012] Furthermore, a support plate is movably connected and sleeved on the internally threaded tube. The support plate is installed at the end of the second half tube. The extrusion plate extends into the space formed by the first half tube and the second half tube. The protruding ribs installed on the side wall of the second half tube pass through the grooves on the edge of the extrusion plate.

[0013] Furthermore, each internally threaded tube is equipped with two sprockets, the sprockets on adjacent threaded columns are connected by a chain, and the sprocket of the first motor power output shaft is connected to the sprocket on one of the threaded columns.

[0014] Furthermore, the partition mechanism includes a connecting frame, a second telescopic cylinder, and several baffles. The connecting frame is installed on top of the several baffles, the telescopic end of the second telescopic cylinder is connected to the connecting frame, and the second telescopic cylinder is installed on the bracket.

[0015] Furthermore, a slot is provided at the end of the inner side of the first half tube, and a through hole is provided at the end of the second half tube. The through hole is directly opposite the slot, and a baffle is provided through the through hole. The bottom of the baffle can be moved and inserted into the slot.

[0016] Furthermore, the material distribution mechanism includes a material distribution bin, and multiple partition plates are provided on the inner side of the material distribution bin. The multiple partition plates divide the material distribution bin into multiple areas, and a discharge port is provided at the bottom of each area. The discharge port is connected to and directly opposite the storage pipe.

[0017] Furthermore, the material distribution mechanism also includes multiple screw conveyors, which are respectively arranged at the bottom of multiple areas of the material distribution bin, and the central shaft of the screw conveyor is arranged through the side wall of the material distribution bin. At the same time, the central shaft of the multiple screw conveyors is connected to the second motor.

[0018] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0019] This invention receives sludge output from the horizontal screw centrifuge body by setting a secondary dewatering structure, and squeezes the sludge to remove water under the action of the secondary dewatering structure, thereby achieving efficient dewatering treatment of sludge, resulting in drier sludge and reducing the cost of secondary dewatering of sludge.

[0020] This utility model features a material distribution mechanism with multiple storage pipes on its side. The material distribution mechanism can transport sludge into the storage pipes. At both ends of the storage pipes, a squeezing mechanism and a baffle mechanism are respectively provided. The sludge can be squeezed and the water discharged by the cooperation of the squeezing mechanism and the baffle mechanism.

[0021] This invention features a discharge platform that is tilted below a storage pipe. The storage pipe comprises a first half-pipe and a second half-pipe that are hinged together. After the sludge is compressed into a column, the first half-pipe can be rotated relative to the second half-pipe to release the sludge column from its confinement. This allows the sludge column to fall onto the discharge platform under gravity and slide down the platform, thus achieving rapid output of the sludge column and saving working time. Attached Figure Description

[0022] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0023] Figure 2 This is a schematic diagram of the structure of the storage tube, the material distribution mechanism, the support, and the extrusion mechanism in this utility model;

[0024] Figure 3 This is a schematic diagram of the material sorting machine in this utility model;

[0025] Figure 4 This is a schematic diagram of the material distribution bin in this utility model;

[0026] Figure 5 This is a schematic diagram of the screw conveyor in this utility model;

[0027] Figure 6This is a schematic diagram of the structure of the storage tube, support, extrusion mechanism and partition mechanism in this utility model;

[0028] Figure 7 This is a schematic diagram of the storage tube structure in this utility model;

[0029] Figure 8 This is a schematic diagram of the extrusion mechanism in this utility model;

[0030] Figure 9 This is a schematic diagram of the partition mechanism in this utility model.

[0031] In the diagram: 1. Unloading platform; 2. Storage pipe; 21. First half-pipe; 22. Second half-pipe; 23. Sleeve; 24. Perforation; 25. Slot; 26. First motor; 27. Raised rib; 3. Material distribution mechanism; 31. Material distribution bin; 32. Screw conveyor; 33. Discharge port; 34. Divider plate; 35. Second motor; 4. Support; 41. First telescopic cylinder; 5. Extrusion mechanism; 51. Extrusion plate; 52. Groove; 53. Support plate; 54. Sprocket; 55. Threaded column; 56. Internally threaded pipe; 6. Baffle mechanism; 61. Baffle plate; 62. Connecting frame; 63. Second telescopic cylinder; 7. Horizontal screw centrifuge body. Detailed Implementation

[0032] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention.

[0033] Example 1: As Figure 1 As shown, in order to effectively reduce the moisture content of sludge, improve the sludge drying capacity of the horizontal screw centrifuge, and reduce the cost of sludge treatment, this embodiment provides a new horizontal screw centrifuge. This horizontal screw centrifuge is equipped with a secondary sludge extrusion and dewatering structure. Therefore, the sludge output from the discharge port of the horizontal screw centrifuge falls into the secondary dewatering structure, and under the operation of the secondary dewatering structure, efficient dewatering treatment of the sludge is achieved.

[0034] A horizontal screw centrifuge includes a drum assembly, a screw conveyor assembly, a differential gear assembly, a drive system, bearing assemblies, a housing assembly, and a control system. The drum assembly comprises the drum body and end caps. The drum body is typically cylindrical-conical in shape and is mounted at both ends, serving a sealing and supporting function. The screw conveyor assembly includes screw blades and a screw shaft. The screw blades are mounted on the screw shaft, which has a certain speed difference with the drum. The differential gear assembly is a crucial component of the horizontal screw centrifuge; its main function is to maintain a stable speed difference between the screw conveyor and the drum. By adjusting the transmission ratio of the differential gear, the speed at which the screw conveyor pushes solid materials can be controlled, thus adapting to the separation requirements of materials with different properties. The drive system includes a main motor and an auxiliary motor. The main motor provides power for the rotation of the drum and is typically high-powered to meet the high-speed rotation requirements. The auxiliary motor drives the differential gear, thereby controlling the speed difference between the screw conveyor and the drum. The control system includes a control cabinet and sensors. The control cabinet integrates various control components and instruments, such as motor controllers, sensors, and displays. Sensors are used to monitor the operating status of the equipment and the separation of materials in real time, such as temperature sensors, pressure sensors, and liquid level sensors.

[0035] like Figure 2 , Figure 6 As shown, the secondary dewatering structure includes a distributing mechanism 3, a storage pipe 2, a support 4, a squeezing mechanism 5, and a baffle mechanism 6. Multiple parallel storage pipes 2 are installed at the bottom of the support 4, whose top is connected to the frame of the horizontal screw centrifuge body 7. The storage pipes 2 are interconnected and located beside the distributing mechanism 3. Simultaneously, the top of the distributing mechanism 3 is connected to the sludge discharge port of the horizontal screw centrifuge body 7. Therefore, sludge output from the horizontal screw centrifuge body 7 falls into the distributing mechanism 3 and is driven to move into the storage pipe 2 under the action of the distributing mechanism 3. The squeezing mechanism 5 is located at the end of the storage pipe 2 furthest from the distributing mechanism 3. The baffle mechanism 6 is located at the junction of the storage pipe 2 and the distributing mechanism 3. With the cooperation of the baffle mechanism 6 and the squeezing mechanism 5, the sludge in the storage pipe 2 is squeezed, forcing the water out of the sludge and forming a columnar shape, facilitating unloading, transfer, transportation, and storage of the sludge.

[0036] like Figure 3 , Figure 4 , Figure 5As shown, in order to transport sludge into the storage pipe 2, the material distribution mechanism 3 includes a material distribution bin 31 and multiple screw conveyors 32. The material distribution bin 31 is configured as an inclined frustum-shaped shell structure, and multiple partition plates 34 are provided on the inner side of the material distribution bin 31. The partition plates 34 divide the material distribution bin 31 into multiple areas, and a discharge port 33 is provided at the bottom of each area, which is connected directly to the storage pipe 2. The multiple screw conveyors 32 are respectively arranged at the bottom of the multiple areas in the material distribution bin 31, and the central shaft of the screw conveyor 32 passes through the side wall of the material distribution bin 31. At the same time, the central shaft of the multiple screw conveyors 32 is connected to the material distribution bin 31 through bearing seats. A second motor 35 is installed on the side of the distribution bin 31. The power output shaft of the second motor 35 is connected to the central shaft of a certain screw conveyor 32 through a coupling. A transmission wheel is installed at the end of the central shaft of each screw conveyor 32, and adjacent transmission wheels are connected by a transmission belt. Therefore, multiple screw conveyors 32 can be controlled to rotate simultaneously under the action of the second motor 35. In turn, the sludge at the bottom of the distribution bin 31 can be forced to move into the storage pipe 2 under the action of the screw conveyors 32 until the sludge fills the storage pipe 2.

[0037] like Figure 7 , Figure 9 As shown, in order to seal the ends of the storage pipe 2 after it is filled with sludge, the baffle mechanism 6 includes a connecting frame 62, a second telescopic cylinder 63, and several baffles 61. The connecting frame 62 is installed on top of the baffles 61, and the telescopic end of the second telescopic cylinder 63 is connected to the connecting frame 62 and is mounted on the bracket 4. Additionally, a through hole 24 and a slot 25 are provided at one end of the storage pipe 2 near the distributing mechanism 3. The through hole 24 is located above the slot 25, and the slot 25 is located on the inner wall of the storage pipe 2. Therefore, when installing the baffle mechanism 6, the baffles 61 are movably installed through the through hole 24, and the connecting frame 62 is positioned above the multiple storage pipes 2. Thus, the baffles 61 can be driven to rise and fall under the action of the second telescopic cylinder 63, thereby sealing the ends of the storage pipe 2 one by one after the sludge fills the storage pipe 2, so as to cooperate with the squeezing mechanism 5.

[0038] like Figure 8 As shown, in order to squeeze out water from the sludge, the squeezing mechanism 5 includes a squeezing plate 51, a threaded post 55, and an internally threaded tube 56. The squeezing plate 51 is disposed inside the storage tube 2, and the threaded post 55 is fixedly disposed on the side of the squeezing plate 51. Meanwhile, the internally threaded tube 56 is threadedly sleeved on the threaded post 55. In addition, a support plate 53 is movably connected and sleeved on the internally threaded tube 56. The top of the support plate 53 is connected to the top of the storage tube 2. Therefore, under the action of the support plate 53, the internally threaded tube 56 is stably supported, thereby making the threaded post 55 and the squeezing plate 51 stably disposed relative to the storage tube 2.

[0039] likeFigure 8 As shown, with the threaded column 55 and the extrusion plate 51 stably installed, in order to force the extrusion plate 51 to move, two sprockets 54 are provided on each internally threaded tube 56. The sprockets 54 facing each other on adjacent threaded columns 55 are connected by a chain. A first motor 26 is provided on the side of the storage tube 2. The same sprockets 54 are provided on the power output shaft of the first motor 26, and the sprockets 54 on the power output shaft of the first motor 26 are connected to the sprockets 54 on one of the threaded columns 55. Therefore, under the action of the first motor 26, multiple internally threaded tubes 56 can be controlled to rotate simultaneously, thereby forcing the threaded column 55 to control the movement of the extrusion plate 51 and realize the extrusion of sludge. The above-mentioned threaded column 55 and internally threaded tube 56 cooperation mechanism can be replaced by a telescopic cylinder, that is, the extrusion plate 51 is controlled to move under the action of the telescopic cylinder.

[0040] like Figure 7 , Figure 8 As shown, in order to restrict the rotation of the extrusion plate 51 and the threaded column 55, a groove 52 is provided on the edge of the extrusion plate 51, and a raised rib 27 is provided on the top of the inner wall of the storage tube 2. The raised rib 27 is provided along the length direction of the storage tube 2. Therefore, the raised rib 27 is provided through the groove 52, which can restrict the rotation of the extrusion plate 51.

[0041] Another plate can be provided on the side of the extrusion plate 51 away from the threaded post 55, and a pressure sensor can be provided in front of the plate and the extrusion plate 51 so as to monitor the pressure applied to the sludge by the extrusion plate 51 in real time.

[0042] like Figure 7 As shown, in order to compress the sludge into a column and release it from the storage tube 2, the storage tube 2 includes a first half-tube 21 and a second half-tube 22 with a cross-section of "(". One side of the first half-tube 21 is hinged to one side of the second half-tube 22. Therefore, by controlling the rotation of the first half-tube 21 relative to the second half-tube 22, the restriction on the sludge column can be released, allowing the sludge column to fall rapidly under the action of gravity. In addition, channels are provided on the side walls of the first half-tube 21 and the second half-tube 22, and filter cloth is provided on the inner surfaces of the first half-tube 21 and the second half-tube 22 to provide a channel for water discharge and facilitate the compression of the sludge into a column shape.

[0043] like Figure 6 , Figure 7As shown, in order to control the rotation of the first half-tube 21 relative to the second half-tube 22, a sleeve 23 is provided at the top of the second half-tube 22. The sleeve 23 is fitted onto the bracket 4, and a first telescopic cylinder 41 is provided on the side of each storage tube 2. The first telescopic cylinder 41 is mounted on the bracket 4, and the telescopic end of the first telescopic cylinder 41 is connected to the first half-tube 21. Therefore, the rotation of the first half-tube 21 can be controlled under the action of the first telescopic cylinder 41, and at the same time, the first half-tube 21 can be driven to quickly dock with the second half-tube 22 to form a complete storage tube 2.

[0044] With the first half tube 21 and the second half tube 22 provided, the slot 25 is provided on the inner side of the first half tube 21, and the through hole 24 is provided on the end of the second half tube 22, with the through hole 24 facing the slot 25.

[0045] To control the operation of this device, the telescopic cylinder can be configured as an electric cylinder, a pneumatic cylinder (equipped with a corresponding air pump), or a hydraulic cylinder (equipped with a corresponding hydraulic pump). The motor can be configured as a stepper motor or a servo motor. The telescopic cylinder, motor, and pressure sensor are all connected to an industrial control computer. Therefore, the industrial control computer can control the telescopic cylinder, motor, and pressure sensor to work in coordination, thereby achieving the drying of sludge. Electric telescopic cylinders are typically controlled by a driver, which receives control signals from the industrial control computer. For precise control, electric telescopic cylinders can be equipped with position sensors. The sensor converts the position information of the telescopic cylinder into an electrical signal, which is fed back to the industrial control computer through an analog or digital input module, allowing the computer to monitor the position status of the telescopic cylinder in real time. Hydraulic telescopic cylinders are typically controlled by solenoid valves that control the flow and pressure of hydraulic oil, thereby achieving the telescopic movement. The industrial control computer outputs control signals to the solenoid valve's drive circuit, controlling the on / off state of the solenoid valve, and thus controlling the movement of the telescopic cylinder.

[0046] Example 2: Figure 1 As shown, based on Example 1, in order to guide the sludge column out, a discharge platform 1 is provided below the storage pipe 2. The discharge platform 1 is inclined downward, so the sludge column can slide down along the discharge platform 1 and then be output from this horizontal screw centrifuge.

[0047] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. It should be noted that for those skilled in the art, any related changes, modifications or additions made without departing from the concept of the present utility model should fall within the protection scope of the present utility model.

Claims

1. A horizontal spiral centrifuge, characterized in that: The invention includes a horizontal spiral centrifuge body (7), characterized in that a material distribution mechanism (3) and multiple storage pipes (2) are provided below the horizontal spiral centrifuge body (7). The material distribution mechanism (3) is internally connected and directly opposite the slag discharge port of the horizontal spiral centrifuge body (7). The multiple storage pipes (2) are connected and arranged on the side of the material distribution mechanism (3), and the multiple storage pipes (2) are all installed at the bottom of a support (4). The top of the support (4) is connected to the frame of the horizontal spiral centrifuge body (7). A baffle mechanism (6) is provided at one end of the storage pipe (2) near the material distribution mechanism (3), and a squeezing mechanism (5) is provided at the other end. The squeezing mechanism (5) and the baffle mechanism (6) cooperate to squeeze the sludge.

2. A horizontal screw centrifuge according to claim 1, characterized in that: The storage tube (2) includes a first half-tube (21) and a second half-tube (22) with a cross-section of "(". One side of the first half-tube (21) is hinged to one side of the second half-tube (22). A channel is provided on the side wall of the first half-tube (21) and the second half-tube (22), and a filter cloth is provided on the inner side of the first half-tube (21) and the second half-tube (22).

3. A horizontal screw centrifuge according to claim 2, characterized in that: The second half-tube (22) is provided with a sleeve (23) at the top, and the sleeve (23) is sleeved on the bracket (4); a first telescopic cylinder (41) is provided on the side of each of the storage tubes (2), the first telescopic cylinder (41) is installed on the bracket (4), and the telescopic end of the first telescopic cylinder (41) is connected to the first half-tube (21).

4. A horizontal spiral centrifuge according to claim 2, characterized in that: The extrusion mechanism (5) includes an extrusion plate (51), a threaded post (55), and an internally threaded tube (56). The threaded post (55) is fixedly disposed on the side of the extrusion plate (51). The internally threaded tube (56) is threaded onto the threaded post (55), and a sprocket (54) is sleeved around the internally threaded tube (56). The sprocket (54) is connected to the sprocket (54) on the power output shaft of the first motor (26) via a chain.

5. A horizontal spiral centrifuge according to claim 4, characterized in that: A support plate (53) is movably connected to the internally threaded tube (56). The support plate (53) is installed at the end of the second half tube (22). The extrusion plate (51) extends into the space formed by the first half tube (21) and the second half tube (22). The protruding rib (27) installed on the side wall of the second half tube (22) passes through the groove (52) on the edge of the extrusion plate (51).

6. A horizontal spiral centrifuge according to claim 4, characterized in that: Two sprockets (54) are provided on each of the internally threaded tubes (56). The sprockets (54) on adjacent threaded columns (55) are connected by a chain, and the sprocket (54) of the power output shaft of the first motor (26) is connected to the sprocket (54) on one of the threaded columns (55).

7. A horizontal screw centrifuge according to claim 2, characterized in that: The partition mechanism (6) includes a connecting frame (62), a second telescopic cylinder (63) and several baffles (61). The connecting frame (62) is installed on the top of several baffles (61). The telescopic end of the second telescopic cylinder (63) is connected to the connecting frame (62), and the second telescopic cylinder (63) is installed on the bracket (4).

8. A horizontal screw centrifuge according to claim 7, characterized in that: A slot (25) is provided at the end of the inner side of the first half tube (21), and a through hole (24) is provided at the end of the second half tube (22). The through hole (24) is directly opposite the slot (25). The baffle (61) is movably disposed through the through hole (24), and the bottom of the baffle (61) can be movably inserted into the slot (25).

9. A horizontal screw centrifuge according to claim 1, characterized in that: The material distribution mechanism (3) includes a material distribution bin (31). Multiple partition plates (34) are provided on the inner side of the material distribution bin (31). The multiple partition plates (34) divide the material distribution bin (31) into multiple areas. A discharge port (33) is provided at the bottom of each area. The discharge port (33) is connected to and directly opposite the storage pipe (2).

10. A horizontal screw centrifuge according to claim 9, characterized in that: The material distribution mechanism (3) also includes multiple screw conveyors (32), which are respectively set at the bottom of multiple areas of the material distribution bin (31), and the central axis of the screw conveyor (32) is set through the side wall of the material distribution bin (31). At the same time, the central axis of the multiple screw conveyors (32) is connected to the second motor (35).

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