Screw extruding dewatering machine for sludge treatment

Abstract

The present application relates to the field of water pollution control and treatment technology, and more particularly to a spiral extrusion dewatering machine for sludge treatment. The spiral extrusion dewatering machine comprises a water tank fixed to a workbench, the water tank is fixed with a first shell and a second shell, a plurality of fixed rods are fixed between the first shell and the second shell in a circumferential distribution, a plurality of static rings are slidingly connected to all the fixed rods in a spaced distribution, and a dynamic ring is arranged between two adjacent static rings. By adjusting the gap between the static ring and the adjacent dynamic ring, the gap between the static ring and the dynamic ring can be cleaned without disassembling the static ring and the dynamic ring, thereby reducing the cumbersome disassembly and cleaning steps, reducing the probability of installation errors 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 with sludge, so as to ensure the efficiency of dewatering the sludge.

Description

Technical Field

[0001] This invention relates to the field of water pollution control and treatment technology, and in particular to a screw extrusion dewatering machine for sludge treatment. Background Technology

[0002] Screw extruders are commonly used equipment in sludge treatment. Their core components typically include an auger with variable pitch and an extrusion filtration unit composed of alternating stationary and rotating rings. Under the conveying and extruding action of the auger, water in the sludge is discharged through the gaps between the stationary and rotating rings, thus achieving sludge dewatering. However, during the dewatering process, fine sludge particles easily become stuck in the gaps between the stationary and rotating rings, causing blockages. This not only severely hinders the normal discharge of water, leading to a sharp decrease in dewatering efficiency, but also increases the equipment's workload. Operating load and energy consumption: When the gap becomes clogged, the traditional solution requires completely shutting down the dewatering machine and disassembling a large number of stationary and rotating ring components for cleaning one by one. This process is extremely tedious, time-consuming, and labor-intensive, seriously affecting the continuous operating efficiency of the equipment and the sludge treatment capacity. Furthermore, frequent disassembly and reinstallation of the stationary and rotating rings will increase the probability of errors or offsets in the installation positions of the stationary and rotating rings. These errors will directly affect the uniformity and dimensional accuracy of the gap between the stationary and rotating rings, thereby affecting the efficiency of sludge dewatering. Summary of the Invention

[0003] In order to overcome the shortcomings mentioned in the background art, the present invention provides a screw extrusion dewatering machine for sludge treatment.

[0004] The technical implementation of the present invention is as follows: a screw extrusion dewatering machine for sludge treatment includes a water tank fixed to a workbench, a first housing and a second housing fixed to both sides of the water tank respectively, the second housing being provided with a feed inlet, the water tank being provided with a drainage trough, a motor being provided on the workbench, the output shaft of the motor being fixedly connected to an auger rotating within the first housing and the second housing, a plurality of circumferentially distributed fixed rods being fixedly connected between the first housing and the second housing, sliding cylinders being slidably connected to opposite sides of the first housing and the second housing, a plurality of spaced stationary rings being slidably connected to all the fixed rods, the sliding cylinders being fixedly connected to adjacent stationary rings, a moving ring being provided between two adjacent stationary rings, tension springs being fixedly connected between the first housing and the second housing and adjacent stationary rings respectively, and a limiting component being provided on the water tank for limiting the position of all the stationary rings.

[0005] Furthermore, the limiting component includes trigger plates spaced apart and in the same number as the stationary rings. The trigger plates are fixed to the corresponding stationary rings. The water tank is provided with an electromagnetic slide rail. The electromagnetic slide rail of the water tank is slidably connected to an electromagnetic slider. The electromagnetic slider is fixed to a trigger rod. The trigger rod is used to limit the trigger plates near the first housing and the trigger plates near the second housing.

[0006] Furthermore, the inner diameter of the stationary ring is larger than the inner diameter of the moving ring.

[0007] Furthermore, the trigger rod is provided with symmetrically distributed connecting rods, the connecting rods are fixed to a connecting plate, and the connecting plate is fixed to a sliding frame on the side facing the stationary ring. The sliding frame is provided with a number of serrated portions distributed at intervals, and the number of all the serrated portions is the same as the number of the moving rings. The serrated portions are used to squeeze the adjacent stationary rings.

[0008] Furthermore, the maximum width of the serrated portion is greater than the distance between two adjacent stationary rings.

[0009] Furthermore, the sliding frame is made of an elastic material, while the serrated portion is made of a rigid material.

[0010] Furthermore, the serrated portion is located between two adjacent stationary rings, and the serrated portion is aligned with the adjacent moving ring.

[0011] Furthermore, the water tank is fixedly connected with symmetrically distributed limiting blocks, the connecting rod is slidably connected to the trigger rod, and an elastic element is fixedly connected between the connecting rod and the trigger rod. The limiting blocks are used to guide adjacent connecting rods.

[0012] Furthermore, there is a distance between the limiting block and the adjacent connecting rod, and there is a distance between the serrated portion and the adjacent moving ring. The distance between the limiting block and the adjacent connecting rod is the same as the distance between the serrated portion and the adjacent moving ring.

[0013] Furthermore, the fixing rod is fixed with two sets of symmetrically distributed limiting rings. Each set of limiting rings has several rings arranged in a straight line. From the middle of the fixing rod to both sides, the distance between any two adjacent limiting rings increases sequentially. The number of all limiting rings is the same as the number of stationary rings. The limiting rings are used to limit the movement of adjacent stationary rings.

[0014] This invention has the following advantages: By adjusting the gap between the stationary ring and the adjacent moving ring, the gap between the stationary ring and the moving ring can be cleaned without disassembling the stationary ring and the moving ring. This reduces tedious disassembly and cleaning steps, lowers the probability of installation errors caused by frequent disassembly of the stationary ring and the moving ring, and thus ensures the stability of the gap size between the stationary ring and the moving ring. This further reduces the probability of sludge getting stuck in the gap between the stationary ring and the moving ring, ensuring the efficiency of sludge dewatering. Furthermore, by squeezing two adjacent stationary rings with the serrated part, the distance between the two adjacent stationary rings is increased, separating all the stationary rings and allowing them to be evenly distributed. When the serrated part is inserted between two adjacent stationary rings, the connecting rod drives the adjacent sliding frame to move through the adjacent connecting plate. The serrated part drives the stationary ring to slide, increasing the gap between the stationary ring and the adjacent moving ring, thereby improving the cleaning effect on the gap between the stationary ring and the adjacent moving ring. Attached Figure Description

[0015] Figure 1 This is a three-dimensional structural diagram of the present invention; Figure 2 This is a three-dimensional structural diagram of the water tank of the present invention; Figure 3 This is a three-dimensional structural diagram of the drainage channel of the present invention; Figure 4 This is a three-dimensional structural diagram of the trigger rod of the present invention; Figure 5 This is an exploded three-dimensional view of the stationary and moving rings of the present invention. Figure 6 This is a three-dimensional structural diagram of the connecting rod of the present invention; Figure 7 This is a three-dimensional structural diagram of the sliding frame of the present invention; Figure 8 This is a three-dimensional structural diagram of the limiting ring of the present invention.

[0016] The meanings of the reference numerals in the figure are as follows: 1: Workbench, 2: Water tank, 201: First housing, 202: Second housing, 203: Drainage trough, 3: Motor, 301: Screwdriver, 4: Fixed rod, 5: Sliding cylinder, 6: Stationary ring, 601: Trigger plate, 7: Moving ring, 8: Electromagnetic slider, 9: Trigger rod, 14: Connecting plate, 15: Sliding frame, 1501: Serrated part, 16: Limiting block, 17: Limiting ring. Detailed Implementation

[0017] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0018] Example 1

[0019] This embodiment discloses a screw extrusion dewatering machine for sludge treatment, used to dewater water-containing sludge and clean the moving and stationary rings of the dewatering machine.

[0020] like Figures 1-5 As shown, the system includes a water tank 2 fixed to a workbench 1. A control terminal (not shown) is installed on the workbench 1. A first housing 201 and a second housing 202 are fixed to the left and right sides of the water tank 2, respectively. The second housing 202 has a feed inlet. The water tank 2 has a drainage trough 203, the height of which is lower than the height of all stationary rings 6. The drainage trough 203 is connected to an external collection device (not shown), which is electrically connected to the control terminal and used to collect water. The workbench 1 has a motor 3 electrically connected to the control terminal. The output shaft of the motor 3 is fixed to an auger 301 rotating within the first housing 201 and the second housing 202. The thread pitch of the auger 301 gradually decreases from right to left. Several circumferentially distributed fixing rods 4 are fixed between the first housing 201 and the second housing 202. Sliding cylinders 5 are slidably connected to opposite sides of the first housing 201 and the second housing 202. Several stationary rings 6 are slidably connected to all fixed rods 4. The sliding cylinders 5 are fixedly connected to adjacent stationary rings 6. A moving ring 7 is provided between two adjacent stationary rings 6. The inner diameter of the stationary ring 6 is larger than the inner diameter of the moving ring 7. All moving rings 7 are located inside all fixed rods 4. The fixed rods 4 are used to restrict the moving rings 7. The auger 301 is located inside the first housing 201, the second housing 202, the stationary rings 6 and the moving rings 7. Tension springs are fixedly connected between the first housing 201 and the second housing 202 and adjacent stationary rings 6 respectively. A limiting component is provided on the water tank 2 to restrict the position of all stationary rings 6. During the rotation of the auger 301, the moving rings 7 are squeezed, causing the moving rings 7 and adjacent stationary rings 6 to continuously misalign. Water flows out from the gap between the stationary rings 6 and the adjacent moving rings 7.

[0021] like Figures 3-5As shown, 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 trigger plates 601. The water tank 2 is provided with an electromagnetic slide rail electrically connected to the control terminal. The electromagnetic slide rail of the water tank 2 is slidably connected to an electromagnetic slider 8. The electromagnetic slider 8 is fixedly connected to a trigger rod 9. The left and right parts of the trigger rod 9 are provided with inclined surfaces. The inclined surfaces gradually tilt towards the adjacent trigger plates 601 from back to front. The inclined surfaces of the trigger rod 9 are used to limit the trigger plates 601 on the left and right sides. Initially, the trigger rod 9 presses the trigger plates 601 on the left and right sides, and the tension spring of the stationary ring 6 is in a stretched state. As the electromagnetic slider 8 drives the trigger rod 9 to move forward, the trigger plates 601 on the left and right sides move along the adjacent inclined surfaces on the trigger rod 9, and the tension spring of the stationary ring 6 gradually returns to its normal unstretched state.

[0022] The specific working principle is as follows: When the operator needs to use this device to dewater water-containing sludge (hereinafter referred to as sludge), the operator adds the sludge into the second housing 202 through the feed inlet. 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 passes through the second housing 202, the stationary ring 6 and the moving ring 7, and the first housing 201 from right to left. Since the thread pitch of the auger 301 gradually decreases from right to left, the sludge will be gradually affected by the auger 301 as it moves from right to left. During the rotation of the auger 301, the auger 301 compresses the moving ring 7, causing the moving ring 7 and the adjacent stationary ring 6 to continuously misalign. The water discharged from the sludge due to the compression of the auger 301 flows out from the gap between the stationary ring 6 and the adjacent moving ring 7, and the water flows out into the water tank 2. When the water level in the water tank is close to the drainage trough 203, the operator turns on the external collection device through the control terminal. The external collection device collects the water through the drainage trough 203. The dewatered sludge is discharged through the first housing 201, and the operator collects the dewatered sludge.

[0023] During the use of this device, when the water flow rate discharged from the gap between the stationary ring 6 and the adjacent moving ring 7 decreases, that is, when the gap between the stationary ring 6 and the adjacent moving ring 7 is blocked by sludge, the operator no longer adds sludge into the second housing 202. The operator turns off the motor 3 through the control terminal and turns on the electromagnetic slide rail of the water tank 2, so that the electromagnetic slider 8 drives the trigger rod 9 to slide forward. The trigger plates 601 on the left and right sides move along the adjacent inclined surfaces on the trigger rod 9 respectively. The trigger plates 601 on the left and right sides move in opposite directions, and the tension spring of the stationary ring 6 gradually contracts. The operator turns off the electromagnetic slide rail of the water tank 2 and slides all the trigger plates 601 in sequence to adjust the gap between the stationary ring 6 and the adjacent moving ring 7.

[0024] During the adjustment of the gap between the stationary ring 6 and the adjacent rotating ring 7, the operator injects water into the gap between the stationary ring 6 and the adjacent rotating ring 7 to clean impurities between them. This cleaning of the gap between the stationary ring 6 and the adjacent rotating ring 7 is done without disassembling them, reducing tedious disassembly and cleaning steps and lowering the probability of installation errors caused by frequent disassembly of the stationary ring 6 and the rotating ring 7. This ensures the stability of the gap size between the stationary ring 6 and the rotating ring 7, thereby reducing the probability of sludge getting stuck in the gap between the stationary ring 6 and the rotating ring 7 and ensuring the efficiency of sludge dewatering.

[0025] After the operator cleans the impurities between the stationary ring 6 and the adjacent moving ring 7, the operator controls the opening of the electromagnetic slide rail of the water tank 2 through the control terminal. The electromagnetic slider 8 drives the trigger rod 9 to move backward. The trigger rod 9 moves and resets, and its inclined surface presses the adjacent trigger plate 601 to move, so that all trigger plates 601 are reset. The operator controls the closing of the electromagnetic slide rail of the water tank 2 through the control terminal. The trigger plate 601 drives the stationary ring 6 to reset, the moving ring 7 to reset, and the operator closes the electromagnetic slide rail and motor 3 of the water tank 2 through the control terminal.

[0026] Example 2

[0027] This embodiment discloses a screw extrusion dewatering machine for sludge treatment, which is a further improvement on the basis of Embodiment 1.

[0028] like Figure 3 , Figure 4 , Figure 6 and Figure 7 As shown, the trigger rod 9 is provided with connecting rods 13 symmetrically distributed on the left and right. In this embodiment, the connecting rods 13 are fixedly connected to the trigger rod 9, and the connecting rods 13 are fixedly connected to the connecting plate 14. The trigger rod 9 and the connecting plate 14 are located in the front and rear directions of the stationary ring 6, respectively. A sliding frame 15 is fixedly connected to the front side of the connecting plate 14. The sliding frame 15 is provided with a plurality of serrated portions 1501 spaced apart. The number of all serrated portions 1501 is the same as the number of moving rings 7. The width of the front part of the serrated portion 1501 is less than the distance between two adjacent stationary rings 6, and the width of the rear part of the serrated portion 1501 is greater than the distance between two adjacent stationary rings 6. The sliding frame 15 is made of elastic material. The serrated part 1501 is made of a rigid material and is aligned with the adjacent moving ring 7. The serrated part 1501 is used to squeeze the adjacent stationary 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 serrated part 1501 of the sliding frame 15 is inserted between two adjacent stationary rings 6, the serrated part 1501 squeezes the two adjacent stationary rings 6. The sliding frame 15 gradually deforms laterally, which increases the distance between the two adjacent stationary rings 6, so that all the stationary rings 6 can be evenly distributed. The operator cleans the gap between the stationary rings 6 and the moving ring 7 through the steps of the above embodiment.

[0029] Example 3

[0030] This embodiment discloses a screw extrusion dewatering machine for sludge treatment, which is a further improvement on the basis of Embodiment 2.

[0031] like Figure 3 , Figure 6 and Figure 7 As shown, the water tank 2 is fixedly connected with symmetrically distributed limiting blocks 16. The limiting blocks 16 are provided with guide slopes. In the above embodiment, the connecting rod 13 is fixedly connected to the trigger rod 9. In this embodiment, the connecting rod 13 and the trigger rod 9 are slidably connected. An elastic element, which is a compression spring, is fixedly connected between the connecting rod 13 and the trigger rod 9. The guide slope of the limiting block 16 is used to guide the adjacent connecting rod 13. There is a distance between the limiting block 16 and the adjacent connecting rod 13. 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. When the sliding frame 15 After the serrated part 1501 is inserted between two adjacent stationary rings 6, the connecting rod 13 moves to contact the guide slope of the adjacent limiting block 16. As the connecting rod 13 moves along the guide slope of the adjacent limiting block 16, the left connecting rod 13 moves to the left while moving forward, and the right connecting rod 13 moves to the right while moving forward. Taking the left connecting rod 13 as an example, the left connecting rod 13 drives the adjacent sliding frame 15 to move through the adjacent connecting plate 14. The serrated part 1501 of the left sliding frame 15 drives the adjacent stationary ring 6 to slide, increasing the gap between the stationary ring 6 and the adjacent moving ring 7, so as to facilitate cleaning of the gap between the stationary ring 6 and the adjacent moving ring 7.

[0032] like Figure 8 As shown, the fixed rod 4 is fixed with two sets of symmetrically distributed limiting rings 17. Each set of limiting rings 17 has several linearly distributed rings. From the middle of the fixed rod 4 to the left and right sides, the distance between two adjacent limiting rings 17 increases sequentially. The number of limiting rings 17 is the same as the number of stationary rings 6. When the stationary ring 6 slides, the limiting rings 17 limit the adjacent stationary rings 6. Taking the stationary ring 6 in the left half as an example, after the stationary ring 6 moves to fit with the adjacent limiting ring 17 on the left, the stationary ring 6 can no longer move to the left. At this time, as the left sliding frame 15 slides to the left, the sliding frame 15 gradually deforms, and the serrated part 1501 has a tendency to drive the adjacent stationary ring 6 on the left to move to the left. The limiting rings 17 block the adjacent stationary rings 6 and limit the maximum distance of the stationary ring 6 to move, so that the gap distance between two adjacent stationary rings 6 is the same.

[0033] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit the scope of protection of the present invention. Although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of the present invention without departing from the essence and scope of the technical solutions of the present invention.

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), and 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), and 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). 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). 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).

2. A screw extrusion 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).

3. A screw press dewatering machine for sludge treatment according to claim 1, characterized in that, The maximum width of the serrated portion (1501) is greater than the distance between two adjacent stationary rings (6).

4. A screw press dewatering machine for sludge treatment according to claim 1, characterized in that, The sliding frame (15) is made of elastic material, and the serrated part (1501) is made of rigid material.

5. A screw press dewatering machine for sludge treatment according to claim 1, 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).

6. A screw press dewatering machine for sludge treatment according to claim 1, 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).

7. A screw press dewatering machine for sludge treatment according to claim 6, 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).

8. A screw press dewatering machine for sludge treatment according to claim 7, 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 rings arranged 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).

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