Automatic cleaning device for a decanter centrifuge

Abstract

The utility model relates to an automatic cleaning device for laminated spiral dewatering machine, is equipped with the support on the outside of the lamination, is fixed with bidirectional flushing module on the support above corresponding lamination, the axis of high pressure water supply pipe is parallel with the axis of lamination and sets up, the leftward flush nozzle and the rightward flush nozzle staggered fixed on high pressure water supply pipe, the injection range of leftward flush nozzle and rightward flush nozzle can cover all gap area of lamination, is fixed with air wash module on the support of left side and right side corresponding bidirectional flushing module, the outlet of high pressure air nozzle is aimed at the gap area of lamination, the axis of high pressure gas pipe is parallel with the axis of lamination and sets up. The utility model can automatically remove the residual sludge in the dynamic and static lamination gap after the equipment shutdown, prevent the sludge concretion and lead to the equipment start -up load too big or fault, improve equipment operation stability and maintenance efficiency.

Description

Technical Field

[0001] This utility model belongs to the technical field of sludge treatment equipment. Specifically, this utility model discloses an automatic cleaning device for a screw press dewatering machine. Background Technology

[0002] Screw press dewatering machines dewater sludge through the relative motion of the screw shaft and the moving and stationary blades. However, after long-term operation, sludge tends to accumulate and harden in the gaps between the blades, causing a sudden increase in load during startup and even preventing the machine from starting, requiring frequent manual cleaning. Existing cleaning methods, such as unidirectional high-pressure water washing or mechanical scraping, suffer from incomplete cleaning, are time-consuming and labor-intensive, or can damage the equipment structure, making it difficult to meet the needs of efficient and automated cleaning. In addition, traditional cleaning devices cannot effectively dry the blades, and the humid environment can easily lead to corrosion of metal parts, shortening the service life of the equipment. Summary of the Invention

[0003] The purpose of this invention is to overcome the shortcomings of the existing technology and provide an automatic cleaning device for a screw press dewatering machine.

[0004] According to the technical solution provided by this utility model, the automatic cleaning device for the screw press dewatering machine includes a bidirectional flushing module, a high-pressure water supply pipe, a left-facing flushing nozzle, a right-facing flushing nozzle, an air washing module, a high-pressure air supply pipe, a high-pressure air nozzle, a support, and stacked plates. A bracket is provided on the outer side of the stacked plates, and a bidirectional flushing module is fixed on the bracket above the stacked plates. The bidirectional flushing module includes a high-pressure water supply pipe and a left-facing flushing nozzle and a right-facing flushing nozzle fixed on the high-pressure water supply pipe. The axis of the high-pressure water supply pipe is parallel to the axis of the stacked plates. The left-facing flushing nozzle and the right-facing flushing nozzle are fixed alternately on the high-pressure water supply pipe. The spray range of the left-facing flushing nozzle and the right-facing flushing nozzle can cover all the gap areas of the stacked plates. Air washing modules are fixed on the brackets on the left and right sides corresponding to the bidirectional flushing module. The air washing module includes a high-pressure air supply pipe and a high-pressure air nozzle fixed on the high-pressure air supply pipe. The outlet of the high-pressure air nozzle is aligned with the gap area of ​​the stacked plates. The axis of the high-pressure air supply pipe is parallel to the axis of the stacked plates.

[0005] Preferably, two sets of the air wash modules are fixed on the brackets on the left and right sides corresponding to the bidirectional rinsing module, and the air wash modules are installed above the transverse diameter of the stacked plates.

[0006] Preferably, the distance between adjacent left-facing flushing nozzles and right-facing flushing nozzles is 80-130 mm.

[0007] The angle between the axis of the left-facing flushing nozzle and the longitudinal diameter of the stacked blades is 10-20°, and the angle between the axis of the right-facing flushing nozzle and the longitudinal diameter of the stacked blades is 10-20°.

[0008] Preferably, the angle between the axis of the left-facing flushing nozzle and the longitudinal diameter of the stacked blades is 15°, and the angle between the axis of the right-facing flushing nozzle and the longitudinal diameter of the stacked blades is 15°.

[0009] Preferably, the distance between adjacent high-pressure air nozzles is 100-150mm.

[0010] Preferably, the angle between the axis of the high-pressure nozzle and the longitudinal diameter of the laminate is 40-50°.

[0011] Preferably, the angle between the axis of the high-pressure nozzle and the longitudinal diameter of the laminate is 45°.

[0012] Preferably, the water supply pressure of the high-pressure water supply pipe is 0.5-0.8 MPa.

[0013] Preferably, the gas supply pressure of the high-pressure gas supply pipe is 0.5-0.8 MPa.

[0014] This invention can automatically remove residual sludge from the gaps between the moving and stationary plates after the equipment is stopped, preventing sludge from caking and causing excessive starting load or malfunction, thereby improving the stability of equipment operation and maintenance efficiency. Attached Figure Description

[0015] Figure 1 This is an axial view of the present invention.

[0016] Figure 2 This is a radial view of the bidirectional flushing module in this utility model.

[0017] Figure 3 This is a radial view of the air washing module in this utility model.

[0018] Explanation of reference numerals in the attached drawings: 1. Two-way flushing module; 1.1. High-pressure water supply pipe; 1.2. Left-facing flushing nozzle; 1.3. Right-facing flushing nozzle; 2. Air washing module; 2.1. High-pressure air supply pipe; 2.2. High-pressure air nozzle; 3. Bracket; 4. Stacked blades. Detailed Implementation

[0019] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of this utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of this utility model. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0020] An automatic cleaning device for a screw press dewatering machine, such as Figure 1-3 As shown, it includes a bidirectional flushing module 1, a high-pressure water supply pipe 1.1, a left-facing flushing nozzle 1.2, a right-facing flushing nozzle 1.3, an air washing module 2, a high-pressure air supply pipe 2.1, a high-pressure air nozzle 2.2, a bracket 3, and a stacked plate 4; A bracket 3 is provided on the outer side of the stacked plate 4. A bidirectional flushing module 1 is fixed on the bracket 3 above the stacked plate 4. The bidirectional flushing module 1 includes a high-pressure water supply pipe 1.1 and a left-facing flushing nozzle 1.2 and a right-facing flushing nozzle 1.3 fixed on the high-pressure water supply pipe 1.1. The axis of the high-pressure water supply pipe 1.1 is parallel to the axis of the stacked plate 4. The left-facing flushing nozzle 1.2 and the right-facing flushing nozzle 1.3 are fixed alternately on the high-pressure water supply pipe 1.1. The spray range of the left-facing flushing nozzle 1.2 and the right-facing flushing nozzle 1.3 can cover all the gap areas of the stacked plate 4. Air wash modules 2 are fixed on the brackets 3 on the left and right sides corresponding to the bidirectional flushing module 1. The air wash module 2 includes a high-pressure air supply pipe 2.1 and a high-pressure air nozzle 2.2 fixed on the high-pressure air supply pipe 2.1. The outlet of the high-pressure air nozzle 2.2 is aligned with the gap area of ​​the stacked plate 4. The axis of the high-pressure air supply pipe 2.1 is parallel to the axis of the stacked plate 4.

[0021] Two sets of air wash modules 2 are fixed on the brackets 3 on the left and right sides corresponding to the bidirectional rinsing module 1, and the air wash modules 2 are installed above the horizontal diameter of the stacked plates 4.

[0022] The distance between adjacent left-facing flushing nozzles 1.2 and right-facing flushing nozzles 1.3 is 80-130mm, so that the water flow from the left-facing flushing nozzles 1.2 and right-facing flushing nozzles 1.3 can cover all the stacked blades 4 axially without interfering with each other. The distance between adjacent left-facing flushing nozzles 1.2 and right-facing flushing nozzles 1.3 is preferably 120mm.

[0023] The angle between the axis of the left-facing flushing nozzle 1.2 and the longitudinal diameter of the stack 4 is 10-20°, and the angle between the axis of the right-facing flushing nozzle 1.3 and the longitudinal diameter of the stack 4 is 10-20°, so that the water flow sprayed from the left-facing flushing nozzle 1.2 and the right-facing flushing nozzle 1.3 can cover the annular surface of the stack 4 in the radial direction.

[0024] The angle between the axis of the left-facing flushing nozzle 1.2 and the longitudinal diameter of the stacked plate 4 is preferably 15°, and the angle between the axis of the right-facing flushing nozzle 1.3 and the longitudinal diameter of the stacked plate 4 is preferably 15°.

[0025] The spacing between adjacent high-pressure air nozzles 2.2 is 100-150mm, ensuring that the airflow ejected from the high-pressure air nozzles 2.2 can cover all the laminates 4 axially without causing interference between the airflows ejected from two adjacent high-pressure air nozzles 2.2. The spacing between adjacent high-pressure air nozzles 2.2 is preferably 130mm.

[0026] The angle between the axis of the high-pressure nozzle 2.2 and the longitudinal diameter of the stack 4 is 40-50°, so that the airflow ejected from the high-pressure nozzle 2.2 can cover the annular surface of the stack 4 in the radial direction.

[0027] The angle between the axis of the high-pressure nozzle 2.2 and the longitudinal diameter of the laminate 4 is preferably 45°.

[0028] The water supply pressure of the high-pressure water supply pipe 1.1 is 0.5-0.8 MPa.

[0029] The gas supply pressure of the high-pressure gas supply pipe 2.1 is 0.5-0.8 MPa.

[0030] Before operation, the high-pressure water supply pipe 1.1 is connected to a water source, and the high-pressure air supply pipe 2.1 is connected to an air source, which is clean compressed air or nitrogen.

[0031] When this utility model is in operation, the high-pressure water sprayed from the left-facing flushing nozzle 1.2 and the right-facing flushing nozzle 1.3 in the bidirectional flushing module 1 can soften and peel off the stubborn sludge in the gap area of ​​the stacked plates 4.

[0032] The high-pressure gas ejected from the high-pressure nozzle 2.2 in the air washing module 2 can blow away residual water film and fine sludge particles on the stacked plates 4, while also drying the surface and gaps of the stacked plates 4, ensuring long-term stable operation of the equipment. The high-pressure nozzle 2.2 in the air washing module 2 can be controlled by a solenoid valve to spray continuously or intermittently.

[0033] In actual operation, the cleaning program of this utility model is set as follows: bidirectional rinsing module 1 rinses for 180 seconds → air wash module 2 air wash for 60 seconds → bidirectional rinsing module 1 rinses for 120 seconds → air wash module 2 air wash for 60 seconds.

[0034] The control system of the automatic cleaning device for the screw press dewatering machine of this invention is integrated into the control system of the screw press dewatering machine. The control mode is divided into automatic mode and manual mode. The automatic mode is used when the equipment is running normally, and the cleaning program is automatically started when the screw press dewatering machine stops; the manual mode is used when the equipment is being debugged or malfunctioning, and the cleaning program is started manually.

[0035] Finally, it should be noted that the above specific embodiments are only used to illustrate the technical solution of this utility model and not to limit it. Although this utility model has been described in detail with reference to examples, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solution of this utility model without departing from the spirit and scope of the technical solution of this utility model, and all such modifications and substitutions should be covered within the scope of the claims of this utility model.

Claims

1. An automatic cleaning device for a screw press dewatering machine, characterized in that: It includes a bidirectional flushing module (1), a high-pressure water supply pipe (1.1), a left-facing flushing nozzle (1.2), a right-facing flushing nozzle (1.3), an air washing module (2), a high-pressure air supply pipe (2.1), a high-pressure air nozzle (2.2), a bracket (3), and a stack of plates (4). A bracket (3) is provided on the outside of the stack (4). A bidirectional flushing module (1) is fixed on the bracket (3) above the stack (4). The bidirectional flushing module (1) includes a high-pressure water supply pipe (1.1) and a left-facing flushing nozzle (1.2) and a right-facing flushing nozzle (1.3) fixed on the high-pressure water supply pipe (1.1). The axis of the high-pressure water supply pipe (1.1) is parallel to the axis of the stack (4). The left-facing flushing nozzle (1.2) and the right-facing flushing nozzle (1.3) are fixed alternately on the high-pressure water supply pipe (1.1). The spray range of the left-facing flushing nozzle (1.2) and the right-facing flushing nozzle (1.3) can cover all the gap areas of the stack (4). An air washing module (2) is fixed on the bracket (3) on the left and right sides corresponding to the bidirectional flushing module (1). The air washing module (2) includes a high-pressure air supply pipe (2.1) and a high-pressure air nozzle (2.2) fixed on the high-pressure air supply pipe (2.1). The outlet of the high-pressure air nozzle (2.2) is aligned with the gap area of ​​the stack (4). The axis of the high-pressure air supply pipe (2.1) is parallel to the axis of the stack (4).

2. The automatic cleaning device for a screw press dewatering machine as described in claim 1, characterized in that: in Two sets of air wash modules (2) are fixed on the brackets (3) on the left and right sides of the bidirectional rinsing module (1), and the air wash modules (2) are installed above the transverse diameter of the stack (4).

3. The automatic cleaning device for a screw press dewatering machine as described in claim 1, characterized in that: The distance between the adjacent left-facing flushing nozzle (1.2) and right-facing flushing nozzle (1.3) is 80-130 mm.

4. The automatic cleaning device for a screw press dewatering machine as described in claim 3, characterized in that: The angle between the axis of the left-facing flushing nozzle (1.2) and the longitudinal diameter of the stack (4) is 10-20°, and the angle between the axis of the right-facing flushing nozzle (1.3) and the longitudinal diameter of the stack (4) is 10-20°.

5. The automatic cleaning device for a screw press dewatering machine as described in claim 4, characterized in that: The angle between the axis of the left-facing flushing nozzle (1.2) and the longitudinal diameter of the stack (4) is 15°, and the angle between the axis of the right-facing flushing nozzle (1.3) and the longitudinal diameter of the stack (4) is 15°.

6. The automatic cleaning device for a screw press dewatering machine as described in claim 1, characterized in that: The distance between adjacent high-pressure air nozzles (2.2) is 100-150mm.

7. The automatic cleaning device for a screw press dewatering machine as described in claim 6, characterized in that: The angle between the axis of the high-pressure nozzle (2.2) and the longitudinal diameter of the stack (4) is 40-50°.

8. The automatic cleaning device for a screw press dewatering machine as described in claim 7, characterized in that: The angle between the axis of the high-pressure nozzle (2.2) and the longitudinal diameter of the stack (4) is 45°.

9. The automatic cleaning device for a screw press dewatering machine as described in claim 1, characterized in that: The water supply pressure of the high-pressure water supply pipe (1.1) is 0.5-0.8 MPa.

10. The automatic cleaning device for a screw press dewatering machine as described in claim 1, characterized in that: The gas supply pressure of the high-pressure gas supply pipe (2.1) is 0.5-0.8 MPa.

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