Spiral extrusion dehydrator for sludge treatment

Abstract

The invention relates to the technical field of water pollution control and treatment, in particular to a spiral extrusion dehydrator for sludge treatment. Comprising a water pool fixedly connected to a workbench, the water pool is fixedly connected with a first shell and a second shell, a plurality of fixing rods distributed in the circumferential direction are fixedly connected between the first shell and the second shell, the fixing rods are jointly connected with a plurality of static rings distributed at intervals in a sliding mode, and a movable ring is arranged between every two adjacent static rings. By adjusting the gap between the static ring and the adjacent moving ring, the gap between the static ring and the moving ring can be cleaned on the premise that the static ring and the moving ring are not detached, the tedious detaching and cleaning steps are reduced, the probability of installation errors caused by frequent detaching of the static ring and the moving ring is reduced, and the service life of the static ring and the moving ring is prolonged. Therefore, the stability of the size of the gap between the static ring and the movable ring is guaranteed, the probability that sludge is clamped into the gap between the static ring and the movable ring is reduced, and the sludge dewatering efficiency is guaranteed.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of water pollution control and treatment, and particularly relates to a spiral extrusion dewatering machine for sludge treatment. BACKGROUND

[0002] The spiral extrusion dewatering machine is a commonly used device in the field of sludge treatment, and its core components usually include a variable-pitch auger and an extrusion filtration unit composed of alternating static rings and dynamic rings. Under the action of the conveying and extrusion of the auger, the water in the sludge is discharged through the gap between the static rings and the dynamic rings, thereby realizing the dewatering treatment of the sludge. However, during the dewatering process of the sludge, fine sludge particles are easily stuck in the gap between the static rings and the dynamic rings, causing blockage. This not only seriously hinders the normal discharge of water, leading to a sharp decline in dewatering efficiency, but also increases the operating load and energy consumption of the equipment. When the gap is blocked, the traditional solution requires the dewatering machine to be completely shut down, and a large number of static ring and dynamic ring assemblies need to be disassembled and cleaned one by one. This process is extremely tedious, time-consuming and labor-intensive, seriously affecting the continuous operation efficiency of the equipment and the sludge treatment capacity. Moreover, frequent disassembly and reinstallation of the static rings and the dynamic rings also increase the probability of installation position errors or deviations of the dynamic and static rings. Such errors directly affect the uniformity and size accuracy of the gap between the static rings and the dynamic rings, and further affect the efficiency of sludge dewatering. SUMMARY

[0003] In order to overcome the shortcomings presented in the background art, the present application provides a spiral extrusion dewatering machine for sludge treatment.

[0004] The technical implementation of the present application is as follows: a spiral extrusion dewatering machine for sludge treatment, comprising a water tank fixed to a workbench, first and second housings are fixed to the two sides of the water tank, the second housing is provided with a feed inlet, the water tank is provided with a drain groove, the workbench is provided with a motor, the output shaft of the motor is fixed to an auger rotating in the first and second housings, a plurality of fixed rods are fixed between the first and second housings in a circumferential direction, the opposite sides of the first and second housings are slidingly connected with sliding cylinders, a plurality of static rings are slidingly connected with all the fixed rods at intervals, the sliding cylinders are fixed to adjacent static rings, a dynamic ring is arranged between two adjacent static rings, a tension spring is fixed between the first and second housings and adjacent static rings, and a limiting assembly is arranged on the water tank for limiting the positions of all the static rings.

[0005] Further, the limiting assembly comprises trigger plates which are spaced apart and have the same number as the static rings, the trigger plates are fixed to the corresponding static rings, the water tank is provided with an electromagnetic sliding rail, the electromagnetic sliding rail of the water tank is slidingly connected with an electromagnetic sliding block, the electromagnetic sliding block is fixed with a trigger rod, the trigger rod is used for limiting the trigger plates close to the first shell and the trigger plates close to the second shell.

[0006] Further, the inner diameter of the static ring is larger than the inner diameter of the dynamic ring.

[0007] Further, the trigger rod is provided with symmetrically distributed connecting rods, the connecting rods are fixed with connecting plates, the connecting plates are fixed with sliding frames on one side of the static ring, the sliding frames are provided with a plurality of sawtooth portions which are spaced apart, the number of all the sawtooth portions is the same as the number of the dynamic rings, and the sawtooth portions are used for extruding adjacent static rings.

[0008] Further, the maximum width of the sawtooth portion is greater than the distance between two adjacent static rings.

[0009] Further, the sliding frame is made of elastic material, and the sawtooth portion is made of hard material.

[0010] Further, the sawtooth portion is located between two adjacent static rings, and the sawtooth portion is aligned with the adjacent dynamic ring.

[0011] Further, the water tank is fixed with symmetrically distributed limiting blocks, the connecting rods are slidingly connected with the trigger rods, the elastic members are fixed between the connecting rods and the trigger rods, and the limiting blocks are used for guiding adjacent connecting rods.

[0012] Further, there is a distance between the limiting block and the adjacent connecting rod, and there is a distance between the sawtooth portion and the adjacent dynamic ring, the distance between the limiting block and the adjacent connecting rod is the same as the distance between the sawtooth portion and the adjacent dynamic ring.

[0013] Further, the fixed rod is fixed with two groups of limiting rings which are symmetrically distributed, each group of limiting rings has a plurality of limiting rings which are linearly distributed, from the middle to both sides of the fixed rod, the distance between two adjacent limiting rings of all the limiting rings gradually increases, the number of all the limiting rings is the same as the number of the static rings, and the limiting rings are used for limiting adjacent static rings.

[0014] The present application has the following advantages: the present application can clean the gap between the static ring and the dynamic ring without disassembling the static ring and the dynamic ring, reduce the cumbersome disassembly and cleaning steps, reduce the probability of installation error caused by frequent disassembly of the static ring and the dynamic ring, thereby ensuring the stability of the gap size between the static ring and the dynamic ring, and further reducing the probability of the gap between the static ring and the dynamic ring being stuck in sludge, to ensure the efficiency of dewatering the sludge, and the sawtooth part extrudes the adjacent two static rings, so that the distance between the adjacent two static rings increases, and all the static rings are uniformly dispersed, when the sawtooth part is inserted between the adjacent two static rings, the connecting rod drives the adjacent sliding frame to move through the adjacent connecting plate, the sawtooth part drives the static ring to slide, and the gap between the static ring and the adjacent dynamic ring is increased, so that the cleaning effect of the gap between the static ring and the adjacent dynamic ring is improved. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 is a schematic diagram of the three-dimensional structure of the present application; Figure 2 is a schematic diagram of the three-dimensional structure of the present application; Figure 3 is a schematic diagram of the three-dimensional structure of the present application; Figure 4 is a schematic diagram of the three-dimensional structure of the present application; Figure 5 is a schematic diagram of the three-dimensional structure of the present application; Figure 6 is a schematic diagram of the three-dimensional structure of the present application; Figure 7 is a schematic diagram of the three-dimensional structure of the present application; Figure 8 is a schematic diagram of the three-dimensional structure of the present application.

[0016] The meanings of the reference signs in the drawings are as follows: 1: workbench, 2: water tank, 201: first housing, 202: second housing, 203: drain groove, 3: motor, 301: auger, 4: fixed rod, 5: sliding cylinder, 6: static ring, 601: trigger plate, 7: dynamic ring, 8: electromagnetic sliding block, 9: trigger rod, 14: connecting plate, 15: sliding frame, 1501: sawtooth part, 16: limiting block, 17: limiting ring. DETAILED DESCRIPTION

[0017] The technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0018] Embodiment 1 The embodiment discloses a spiral extrusion dewatering machine for sludge treatment, which is used for dewatering treatment of water-containing sludge and cleaning dynamic rings and static rings of the dewatering machine.

[0019] As Figures 1-5 shown, the water tank 2 is fixed to the workbench 1, the workbench 1 is provided with a control terminal not shown in the figure, the left and right sides of the water tank 2 are respectively fixed with a first shell 201 and a second shell 202, the second shell 202 is provided with a feeding port, the water tank 2 is provided with a drain groove 203, the height of the drain groove 203 is lower than the height of all the static rings 6, the drain groove 203 is in communication with an external collecting device not shown in the figure, the external collecting device is electrically connected with the control terminal, the external collecting device is used for collecting water flow, the workbench 1 is provided with a motor 3 electrically connected with the control terminal, the output shaft of the motor 3 is fixed with an auger 301 rotating in the first shell 201 and the second shell 202, the thread pitch of the auger 301 gradually decreases from right to left, a plurality of fixed rods 4 are fixed between the first shell 201 and the second shell 202, the opposite sides of the first shell 201 and the second shell 202 are both slidingly connected with sliding cylinders 5, a plurality of static rings 6 are slidingly connected with the fixed rods 4, the sliding cylinders 5 are fixed with adjacent static rings 6, a dynamic ring 7 is arranged between adjacent static rings 6, the inner diameter of the static ring 6 is greater than the inner diameter of the dynamic ring 7, all the dynamic rings 7 are located in all the fixed rods 4, the fixed rods 4 are used for limiting the dynamic rings 7, the auger 301 is located in the first shell 201, the second shell 202, the static rings 6 and the dynamic rings 7, the first shell 201 and the second shell 202 are respectively fixed with a tension spring between adjacent static rings 6, the water tank 2 is provided with a limiting assembly for limiting the position of all the static rings 6, the auger 301 extrudes the dynamic rings 7 during rotation, so that the dynamic rings 7 and the adjacent static rings 6 are continuously dislocated, and water flow flows out from the gap between the static rings 6 and the adjacent dynamic rings 7.

[0020] As Figures 3-5As shown, the limiting assembly includes a plurality of trigger plates 601 which are spaced apart and have the same number as the static rings 6, the trigger plates 601 are fixed to the corresponding trigger plates 601, the sink 2 is provided with an electromagnetic sliding rail which is electrically connected with the control terminal, the electromagnetic sliding rail of the sink 2 is slidably connected with an electromagnetic sliding block 8, the electromagnetic sliding block 8 is fixed with a trigger rod 9, the left and right parts of the trigger rod 9 are provided with inclined surfaces which gradually incline to the direction of the adjacent trigger plate 601 from back to front, the inclined surfaces of the trigger rod 9 are used for limiting the left and right trigger plates 601, initially, the trigger rod 9 presses the left and right trigger plates 601, the tension spring of the static ring 6 is in a stretched state, in the process of moving the trigger rod 9 forward by the electromagnetic sliding block 8, the left and right trigger plates 601 move along the adjacent inclined surfaces on the trigger rod 9 respectively, and the tension spring of the static ring 6 gradually returns to the normal non-stretched state.

[0021] The specific working principle is as follows: When the operator needs to use the device to dewater the water-containing sludge (hereinafter referred to as sludge), the operator adds the sludge into the second shell 202 through the feed inlet of the second shell 202, and then the operator starts the motor 3 through the control terminal, the output shaft of the motor 3 drives the auger 301 to rotate, the sludge sequentially passes through the inside of the second shell 202, the inside of the static ring 6 and the dynamic ring 7, and the inside of the first shell 201 from right to left, because the thread pitch of the auger 301 gradually decreases from right to left, therefore, the sludge will be gradually extruded by the auger 301 in the process of moving from right to left, and in the process of rotating the auger 301, the auger 301 extrudes the dynamic ring 7, so that the dynamic ring 7 and the adjacent static ring 6 are continuously dislocated, the water flow discharged from the sludge due to extrusion by the auger 301 flows out from the gap between the static ring 6 and the adjacent dynamic ring 7, the water flow flows out into the water pool 2, after the water level in the water pool is close to the drain groove 203, the operator starts the external collection equipment through the control terminal, the external collection equipment collects the water flow through the drain groove 203, and the dewatered sludge is discharged through the first shell 201, and the operator collects the dewatered sludge.

[0022] In the process of using the device, when the water flow discharged from the gap between the static ring 6 and the adjacent dynamic ring 7 is reduced, that is, the gap between the static ring 6 and the adjacent dynamic ring 7 is blocked by the sludge, the operator no longer adds the sludge into the second shell 202, the motor 3 is turned off through the control terminal, and the electromagnetic sliding rail of the water pool 2 is started, so that the electromagnetic sliding block 8 drives the trigger rod 9 to slide forward, the left and right trigger plates 601 move along the adjacent inclined surfaces on the trigger rod 9 respectively, the left and right trigger plates 601 move away from each other, and the tension spring of the static ring 6 gradually contracts, the operator turns off the electromagnetic sliding rail of the water pool 2 and slides all the trigger plates 601 in sequence, so as to adjust the gap between the static ring 6 and the adjacent dynamic ring 7.

[0023] In the process of adjusting the gap between the static ring 6 and the adjacent dynamic ring 7, the operator injects water flow into the gap between the static ring 6 and the adjacent dynamic ring 7 to clean the impurities between the static ring 6 and the adjacent dynamic ring 7, and the gap between the static ring 6 and the dynamic ring 7 is cleaned without disassembling the static ring 6 and the dynamic ring 7, which reduces the cumbersome disassembly and cleaning steps, reduces the probability of installation error of the static ring 6 and the dynamic ring 7 due to frequent disassembly, ensures the stability of the gap size between the static ring 6 and the dynamic ring 7, and further reduces the probability of the gap between the static ring 6 and the dynamic ring 7 being stuck in the sludge, so as to ensure the efficiency of dewatering the sludge.

[0024] When the operator has cleaned the impurities between the static ring 6 and the adjacent dynamic ring 7, the operator controls the electromagnetic slide rail of the water tank 2 to be opened through the control terminal, the electromagnetic slide block 8 drives the trigger rod 9 to move backward, the trigger rod 9 is reset and moves the adjacent trigger plate 601 by pressing it through the inclined surface, so that all the trigger plates 601 are reset, the operator controls the electromagnetic slide rail of the water tank 2 to be closed through the control terminal, the trigger plate 601 drives the static ring 6 to be reset, the dynamic ring 7 is reset, and the operator controls the electromagnetic slide rail of the water tank 2 and the motor 3 to be closed through the control terminal.

[0025] Embodiment 2 The embodiment discloses a spiral extrusion dewatering machine for sludge treatment, which is further improved on the basis of embodiment 1.

[0026] As Figure 3 , Figure 4 , Figure 6 and Figure 7 As shown in the drawings, the trigger rod 9 is provided with left and right symmetrical connecting rods 13, in this embodiment, the connecting rod 13 is fixedly connected with the trigger rod 9, the connecting rod 13 is fixedly connected with a connecting plate 14, the trigger rod 9 and the connecting plate 14 are located in the front and back directions of the static ring 6 respectively, the front side of the connecting plate 14 is fixedly connected with a sliding frame 15, the sliding frame 15 is provided with a plurality of sawtooth portions 1501 which are spaced apart, the number of all the sawtooth portions 1501 is the same as the number of the dynamic ring 7, the width of the front part of the sawtooth portion 1501 is smaller than the distance between the adjacent two static rings 6, the width of the rear part of the sawtooth portion 1501 is greater than the distance between the adjacent two static rings 6, the sliding frame 15 is made of elastic material, the sawtooth portion 1501 is made of hard material, the sawtooth portion 1501 is aligned with the adjacent dynamic ring 7, and the sawtooth portion 1501 is used for extruding the adjacent static ring 6, when the trigger rod 9 moves forward, the trigger rod 9 drives the sliding frame 15 to move forward through the connecting rod 13 and the connecting plate 14, when the sawtooth portion 1501 of the sliding frame 15 is inserted between the adjacent two static rings 6, the sawtooth portion 1501 extrudes the adjacent two static rings 6, the sliding frame 15 gradually deforms laterally, so that the distance between the adjacent two static rings 6 increases, that is, all the static rings 6 are uniformly dispersed, and the operator cleans the gap between the static ring 6 and the dynamic ring 7 through the above-mentioned embodiment steps.

[0027] Embodiment 3 The embodiment discloses a spiral extrusion dewatering machine for sludge treatment, which is further improved on the basis of embodiment 2.

[0028] As Figure 3 , Figure 6 and Figure 7 shown, the water tank 2 is fixed with the left-right symmetrical limiting blocks 16, the limiting blocks 16 are provided with guide inclined surfaces, in the above embodiment, the connecting rods 13 are fixedly connected with the trigger rods 9, in the embodiment, the connecting rods 13 are slidingly connected with the trigger rods 9, and the elastic elements are fixedly connected between the connecting rods 13 and the trigger rods 9, wherein the elastic elements are compression springs, the guide inclined surfaces of the limiting blocks 16 are used for guiding the adjacent connecting rods 13, there is a distance between the limiting blocks 16 and the adjacent connecting rods 13, there is a distance between the sawtooth parts 1501 and the adjacent moving rings 7, the distance between the limiting blocks 16 and the adjacent connecting rods 13 is the same as the distance between the sawtooth parts 1501 and the adjacent moving rings 7, when the sawtooth parts 1501 of the sliding frames 15 are inserted between the adjacent two static rings 6, the connecting rods 13 move to be in contact with the guide inclined surfaces of the adjacent limiting blocks 16, along with the movement of the connecting rods 13 along the guide inclined surfaces of the adjacent limiting blocks 16, the left connecting rods 13 move to the left during the forward movement, and the right connecting rods 13 move to the right during the forward movement, taking the left connecting rods 13 as an example, the left connecting rods 13 drive the adjacent sliding frames 15 to move through the adjacent connecting plates 14, the sawtooth parts 1501 of the left sliding frames 15 drive the adjacent static rings 6 to slide, and the gap between the static rings 6 and the adjacent moving rings 7 is increased, so that the gap between the static rings 6 and the adjacent moving rings 7 is cleaned.

[0029] As Figure 8 shown, the fixed rods 4 are fixedly connected with two groups of limiting rings 17 which are distributed left-right symmetrically, each group of limiting rings 17 has a plurality of limiting rings 17 which are distributed linearly, from the middle part of the fixed rods 4 to the left and right sides, the distances between the adjacent two limiting rings 17 in all the limiting rings 17 gradually increase, the number of all the limiting rings 17 is the same as the number of the static rings 6, when the static rings 6 slide, the limiting rings 17 limit the adjacent static rings 6, taking the left half of the static rings 6 as an example, after the static rings 6 move to be attached to the left adjacent limiting rings 17, the static rings 6 cannot move to the left any more, at this time, during the left sliding of the left sliding frames 15, the sliding frames 15 gradually deform, the sawtooth parts 1501 have a tendency to drive the left adjacent static rings 6 to move to the left, the limiting rings 17 block the adjacent static rings 6, limit the maximum distance of the static rings 6, and the gap distances between the adjacent two static rings 6 in all the static rings 6 are the same.

[0030] Finally, it should be noted that the above examples are merely intended to illustrate the technical solutions of the present application and not to limit the protection scope of the present application. Although the present application has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present application can be modified or equivalently replaced without departing from the essence and scope of the technical solutions of the present application.

Claims

1. A screw extrusion dewatering machine for sludge treatment, comprising a water tank (2) fixed to a workbench (1), a first housing (201) and a second housing (202) fixed to both sides of the water tank (2), the second housing (202) having a feed inlet, the water tank (2) having a drain trough (203), the workbench (1) having a motor (3), the output shaft of the motor (3) being fixed to an auger (301) rotating within the first housing (201) and the second housing (202), and a plurality of circumferentially distributed fixed rods (4) fixed between the first housing (201) and the second housing (202), characterized in that, The first housing (201) and the second housing (202) are slidably connected to opposite sides of a sliding cylinder (5). All the fixed rods (4) are slidably connected to a plurality of stationary rings (6) spaced apart. The sliding cylinder (5) is fixedly connected to the adjacent stationary ring (6). A moving ring (7) is provided between two adjacent stationary rings (6). The first housing (201) and the second housing (202) are respectively fixedly connected to the adjacent stationary rings (6) with tension springs. The pool (2) is provided with a limiting component for limiting the position of all the stationary rings (6).

2. A screw press dewatering machine for sludge treatment according to claim 1, characterized in that, The limiting component includes trigger plates (601) spaced apart and in the same number as the stationary rings (6). The trigger plates (601) are fixed to the corresponding stationary rings (6). The water tank (2) is provided with an electromagnetic slide rail. The electromagnetic slide rail of the water tank (2) is slidably connected to an electromagnetic slider (8). The electromagnetic slider (8) is fixed to a trigger rod (9). The trigger rod (9) is used to limit the trigger plates (601) near the first housing (201) and near the second housing (202).

3. A screw press dewatering machine for sludge treatment according to claim 1, characterized in that, The inner diameter of the stationary ring (6) is larger than the inner diameter of the moving ring (7).

4. A screw press dewatering machine for sludge treatment according to claim 2, characterized in that, The trigger rod (9) is provided with symmetrically distributed connecting rods (13), the connecting rods (13) are fixedly connected to a connecting plate (14), the connecting plate (14) is fixedly connected to a sliding frame (15) on the side facing the stationary ring (6), the sliding frame (15) is provided with a number of serrated parts (1501) spaced apart, the number of all the serrated parts (1501) is the same as the number of the moving ring (7), and the serrated parts (1501) are used to squeeze the adjacent stationary ring (6).

5. A screw press dewatering machine for sludge treatment according to claim 4, characterized in that, The maximum width of the serrated portion (1501) is greater than the distance between two adjacent stationary rings (6).

6. A screw press dewatering machine for sludge treatment according to claim 4, characterized in that, The sliding frame (15) is made of elastic material, and the serrated part (1501) is made of rigid material.

7. A screw press dewatering machine for sludge treatment according to claim 4, characterized in that, The serrated portion (1501) is located between two adjacent stationary rings (6), and the serrated portion (1501) is aligned with the adjacent moving ring (7).

8. A screw press dewatering machine for sludge treatment according to claim 4, characterized in that, The pool (2) is fixed with symmetrically distributed limiting blocks (16), the connecting rod (13) is slidably connected to the trigger rod (9), and an elastic element is fixed between the connecting rod (13) and the trigger rod (9). The limiting block (16) is used to guide the adjacent connecting rod (13).

9. A screw press dewatering machine for sludge treatment according to claim 8, characterized in that, There is a distance between the limiting block (16) and the adjacent connecting rod (13), and there is a distance between the serrated part (1501) and the adjacent moving ring (7). The distance between the limiting block (16) and the adjacent connecting rod (13) is the same as the distance between the serrated part (1501) and the adjacent moving ring (7).

10. A screw press dewatering machine for sludge treatment according to claim 9, characterized in that, The fixed rod (4) is fixed with two sets of symmetrically distributed limiting rings (17). Each set of limiting rings (17) has several in a straight line. From the middle of the fixed rod (4) to both sides, the distance between two adjacent limiting rings (17) increases sequentially. The number of all limiting rings (17) is the same as the number of stationary rings (6). The limiting rings (17) are used to limit the adjacent stationary rings (6).

Images