Extrusion structure of sludge treatment assembly line

Abstract

The utility model provides an extrusion structure of a sludge treatment assembly line, which relates to the technical field of sludge extrusion dewatering, and comprises an extrusion pipe for extruding and dewatering crushed sludge, a drainage groove is arranged at the bottom edge of the pipe wall of the extrusion pipe close to the outlet side, and two winding rollers which are symmetrically distributed relative to the drainage groove are rotatably connected to the outer side of the pipe wall of the extrusion pipe. Filter cloth covering the drainage groove is wound on the two winding rollers, and the two winding rollers rotate to release the filter cloth by one winding roller and wind the filter cloth by the other winding roller, so that the filter cloth can be drawn, namely, different areas of the inner side surface of the filter cloth face the drainage groove; the arc-shaped frame ascends to enable the part of the filter cloth to enter a notch in the inner side of the drainage groove for sludge filtration and dehydration, so that the filter cloth can be quickly and directly replaced by directly drawing the filter cloth, and the sludge dehydration efficiency is not influenced.

Description

Technical Field

[0001] The utility model relates to the technical field of sludge extrusion dehydration, in particular to an extrusion structure of a sludge processing line. Background Art

[0002] In the sludge treatment process, a relatively important step is to squeeze and dehydrate the sludge. Sludge squeezing and dehydration technology mainly relies on mechanical pressure to remove moisture from the sludge. This method usually uses special equipment, such as plate and frame filter press, belt filter press, etc.

[0003] For example, an extrusion structure of a sludge treatment production line, the publication number is: CN219709344U. When in use, the rotation of the rotating shaft can simultaneously drive multiple sets of blades fixed externally to rotate to assist in crushing and breaking up some larger lumps of sludge in the sludge. After the crushed sludge is introduced into the extrusion chamber, the rotating extrusion shaft can squeeze the sludge inside the extrusion chamber. During the extrusion process, the sewage in the sludge can leak out from the inside of the bottom arc-shaped filter plate, and the extruded sludge can be squeezed out from the inside of the mud outlet. In addition, during the use of the extrusion structure, the disassembly bolts set on both sides of the bottom of the box can be unscrewed from the inside of the threaded hole to the outside, and the arc filter plate can be unlocked inside the mounting groove. After that, the arc filter plate can be removed from the inside of the mounting groove for cleaning or replacement.

[0004] However, because sludge will penetrate into the filter holes on the surface of the curved filter plate every time the sludge is squeezed and dehydrated, causing the filter holes to be blocked, personnel need to frequently remove the curved filter plate for cleaning and then replace it, or frequently replace it with a new curved filter plate. Both frequent cleaning and frequent replacement will waste a lot of time and affect the sludge dewatering efficiency. Utility Model Content

[0005] The purpose of the utility model is to solve the problems existing in the prior art and to propose an extrusion structure for a sludge treatment line.

[0006] In order to achieve the above-mentioned purpose, the utility model adopts the following technical solutions: an extrusion structure of a sludge treatment production line, comprising an extrusion tube for extruding and dehydrating crushed sludge, a drainage groove being provided on the bottom edge of the tube wall of the extrusion tube near the outlet side, and two winding rollers symmetrically distributed about the drainage groove are rotatably connected to the outer side of the tube wall of the extrusion tube, filter cloth covering the drainage groove is wrapped around the two winding rollers, two electric telescopic rods are fixedly connected to the outer tube wall of the extrusion tube directly below the drainage groove, and the telescopic ends of the two electric telescopic rods are fixedly connected to an arc frame for plugging into the inner wall of the drainage groove and having the same curvature as the inner wall of the extrusion tube, the surface of the arc frame is hollow and the inner side of the arc frame is in contact with the outer side of the filter cloth.

[0007] Preferably, the drainage groove is located on the inner side wall relative to the length direction of the extruded tube and is fixedly connected with a plurality of baffles, and the plurality of baffles are distributed in a circular array around the center line of the extruded tube and are used to fit with the inner side of the filter cloth.

[0008] Preferably, the outer tube wall of the extruded tube is fixedly connected to a plurality of spring rods distributed along the center line of the extruded tube at positions on both sides of the drainage groove, and the telescopic ends of the plurality of spring rods on the same side are fixedly connected to a through-frame inserted into the outer tube wall of the extruded tube, and a roller which is arranged parallel to the center line of the extruded tube and is rollingly connected to the inner side surface of the filter cloth is rotatably connected inside the through-frame.

[0009] Preferably, a hydraulic rod is fixedly connected to a position of the outer wall of the extruded tube close to any penetration frame, and the telescopic end of the hydraulic rod is disc-shaped and is used to push the penetration frame body.

[0010] Preferably, a high-pressure water spray pipe is fixedly connected to one side of the through-frame body close to the drainage groove, and a scraper bar slidably connected to the inner side of the filter cloth is fixedly connected to one side of the high-pressure water spray pipe body close to the drainage groove.

[0011] Preferably, the outer wall of the extruded tube is rotatably connected to a rolling water retaining column between the drainage groove and the scraper bar, and the rolling water retaining column, the scraper bar and the high-pressure water spray pipe are all arranged along the width direction of the filter cloth.

[0012] Preferably, a motor for driving the winding roller to rotate is fixedly connected to the outer wall of the extruded tube.

[0013] Compared with the prior art, the advantages and positive effects of the present invention are:

[0014] 1. In the utility model, by rotating the two winding rollers, one of the winding rollers releases the filter cloth and the other winding roller winds the filter cloth, so that the filter cloth can be pulled, that is, different areas of the inner side of the filter cloth are directed toward the drainage trough, and the arc frame is raised to allow this part of the filter cloth to enter the inner notch of the drainage trough for sludge filtration and dehydration. Therefore, the filter cloth can be quickly and directly replaced by pulling the filter cloth without affecting the sludge dehydration efficiency.

[0015] 2. In the utility model, when the winding roller on one side rewinds the used filter cloth, the filter cloth is first squeezed and dehydrated on the surface of the filter cloth under the rolling and squeezing action of the rolling water retaining column, and then the residual silt on the inside of the filter cloth is scraped off by the scraping bar, and finally it is thoroughly rinsed by the high-pressure water spray pipe, so that the surface of the filter cloth can be cleaned and the filter cloth can be reused. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1This is a three-dimensional structural diagram of an extrusion structure of a sludge treatment line proposed by the utility model;

[0017] Figure 2 This utility model proposes an extrusion structure for a sludge treatment line Figure 1 Schematic diagram of the structure viewed from above;

[0018] Figure 3 This utility model proposes an extrusion structure for a sludge treatment line Figure 1 Schematic diagram of the cross-sectional structure;

[0019] Figure 4 This utility model proposes an extrusion structure for a sludge treatment line Figure 3 Schematic diagram of the cross-sectional structure.

[0020] Legend: 1. Extrusion tube; 2. Filter cloth; 3. Winding roller; 4. Through-frame; 5. Rotating roller; 6. Arc frame; 7. Electric telescopic rod; 8. Spring rod; 9. Hydraulic rod; 10. Baffle bar; 11. High-pressure water spray pipe; 12. Scraper bar; 13. Rolling water retaining column; 14. Drainage trough. DETAILED DESCRIPTION

[0021] In order to more clearly understand the above-mentioned purpose, features and advantages of the present invention, the present invention is further described below with reference to the accompanying drawings and embodiments. It should be noted that the embodiments of the present application and the features therein can be combined with each other without conflict.

[0022] In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention may also be implemented in other ways than those described herein. Therefore, the present invention is not limited to the specific embodiments disclosed in the following specification.

[0023] like Figure 1-4As shown, a squeezing structure of a sludge treatment line includes a squeezing tube 1 for squeezing and dehydrating the crushed sludge, an squeezing-related structure in the squeezing tube 1 and a sludge crushing structure. The reference publication number is: CN219709344U. A squeezing structure of a sludge treatment line, wherein a drainage groove 14 is provided on the bottom edge of the squeezing tube 1 near the outlet side and two winding rollers 3 symmetrically distributed about the drainage groove 14 are rotatably connected to the outer wall of the squeezing tube 1. A motor for driving the winding rollers 3 to rotate is fixedly connected to the outer wall of the squeezing tube 1. Filter cloths 2 covering the drainage groove 14 are wound on the two winding rollers 3. By utilizing the two motors to rotate at the same speed and in opposite directions, one of the winding rollers 3 releases the filter cloth 2, and the other winding roller 3 releases the filter cloth 2, so that the new unused area on the surface of the filter cloth 2 can be moved to the bottom of the drainage groove 14. The outer wall of the squeezing tube 1 is located directly below the drainage groove 14 and is fixedly connected to two electric telescopic rods 7. The two The telescopic end of the electric telescopic rod 7 is fixedly connected to an arc frame 6 for plugging into the inner wall of the drainage trough 14 and having the same curvature as the inner wall of the extrusion tube 1. The surface of the arc frame 6 is hollow and the inner side surface of the arc frame 6 fits the outer side surface of the filter cloth 2. The electric telescopic rod 7 is extended to realize the arc frame 6 entering the drainage trough 14. At this time, the part of the filter cloth 2 originally located below the drainage trough 14 enters the drainage trough 14 under the pushing action of the arc frame 6 and covers the inner notch of the drainage trough 14. The filter cloth 2 is used to filter and dehydrate the sludge during the extrusion process. The drainage trough 14 is located in the relative inner side wall of the extrusion tube 1 in the length direction. The plurality of baffles 10 are distributed in a circular array around the center line of the extrusion tube 1 and are used to fit the inner side surface of the filter cloth 2. The plurality of baffles 10 ensure that the part of the filter cloth 2 entering the inner notch of the drainage trough 14 is arranged in an arc shape, and ensure that this part of the filter cloth 2 will not enter the extrusion tube 1.

[0024] Further: the outer tube wall of the extrusion tube 1 is located on both sides of the drainage groove 14 and is fixedly connected with a plurality of spring rods 8 distributed along the center line direction of the extrusion tube 1. The telescopic ends of the plurality of spring rods 8 on the same side are fixedly connected with a through-frame 4 inserted into the outer tube wall of the extrusion tube 1. The through-frame 4 is rotatably connected with a roller 5 arranged parallel to the center line of the extrusion tube 1 and rollingly connected to the inner side of the filter cloth 2. By utilizing the elastic expansion and contraction of the set spring rods 8, when the arc frame 6 pushes the filter cloth 2 into the drainage groove 14, the spring rods 8 elastically contract, so that the filter cloth 2 presses the roller 5 and the through-frame 4 to move, that is, when the winding roller 3 does not rotate, it is ensured that the filter cloth 2 can be released to a certain length to prevent the arc When the curved frame 6 pushes the filter cloth 2, the filter cloth 2 is torn due to excessive surface tension. A hydraulic rod 9 is fixedly connected to the outer wall of the extrusion tube 1 near any position of the through-frame 4. The telescopic end of the hydraulic rod 9 is disc-shaped and is used to push the through-frame 4. After the curved frame 6 enters the drainage trough 14, the hydraulic rod 9 is extended to push the through-frame 4 to overcome the elastic force of the spring rod 8 and move, that is, the roller 5 on the surface of the through-frame 4 generates a thrust on the inside of the filter cloth 2 to ensure that the surface of the filter cloth 2 is straightened, to prevent the sludge from being squeezed inside the extrusion tube 1, forcing the surface of the filter cloth 2 to sink, bend, and deform into the hollow part of the curved frame 6, causing a gap between the filter cloth 2 and the wall of the drainage trough 14.

[0025] The rolling water retaining column 13 that is provided can also prevent the sludge scraped by the scraping bar 12 from sliding along the inclined surface of the inner side of the filter cloth 2 to just below the drainage groove 14.

[0026] Working principle, in actual use, such as Figure 1 and Figure 2As shown, the electric telescopic rod 7 is extended to realize the arc frame 6 entering the drainage trough 14, and at this time, the part of the filter cloth 2 originally located below the drainage trough 14 enters the drainage trough 14 under the pushing action of the arc frame 6 and covers the inner notch of the drainage trough 14. At this time, when the squeezing tube 1 is started, the part of the filter cloth 2 covering the inner notch of the drainage trough 14 is used to achieve filtration and drainage. After the sludge in the squeezing tube 1 is dehydrated, the electric telescopic rod 7 is retracted to realize the arc frame 6 descending and separating from the drainage trough 14, and under the elastic extension and reset action of the spring rod 8, the sludge in the drainage trough 14 is effectively drained. Now the penetrating frame 4 pushes the roller 5, and uses the roller 5 to press against the inner side of the filter cloth 2 to straighten the filter cloth 2, and then uses two motors to rotate at the same speed and in opposite directions to realize that one of the winding rollers 3 releases the filter cloth 2, and the other winding roller 3 releases the filter cloth 2, and the used part of the filter cloth 2 is wound on one of the winding rollers 3, and the winding roller 3 on the other side releases a new, unused, clean-surfaced filter cloth 2 and moves it to just below the drainage trough 14, and then the arc frame 6 rises again to realize that the new filter cloth 2 enters the drainage trough 14 for sludge extrusion, filtration and dehydration.

[0027] The wiring diagram of the electric telescopic rod 7, the hydraulic rod 9 and the motor in the present invention is common knowledge in the art, and its working principle is a well-known technology. The model is selected according to the actual use. Therefore, the control method and wiring arrangement of the electric telescopic rod 7, the hydraulic rod 9 and the motor are not explained in detail.

[0028] The above description is only a preferred embodiment of the present invention and does not limit the present invention in any other form. Any technician familiar with the profession may use the technical content disclosed above to change or modify it into an equivalent embodiment with equivalent changes for application in other fields. However, any simple modification, equivalent change and modification of the above embodiment made according to the technical essence of the present invention without departing from the content of the technical solution of the present invention shall still fall within the scope of protection of the technical solution of the present invention.

Claims

1. An extrusion structure for a sludge treatment line, comprising an extrusion tube (1) for extruding and dehydrating crushed sludge, characterized in that: A drainage groove (14) is provided at the bottom edge of the wall of the extruded tube (1) near the outlet side, and two winding rollers (3) symmetrically distributed about the drainage groove (14) are rotatably connected to the outer side of the wall of the extruded tube (1), and filter cloth (2) covering the drainage groove (14) is wound on the two winding rollers (3). Two electric telescopic rods (7) are fixedly connected to the outer wall of the extruded tube (1) at a position directly below the drainage groove (14), and the telescopic ends of the two electric telescopic rods (7) are fixedly connected to an arc frame (6) for plugging into the inner wall of the drainage groove (14) and having an inner side with the same curvature as the inner wall of the extruded tube (1), the surface of the arc frame (6) is hollowed, and the inner side of the arc frame (6) is in contact with the outer side of the filter cloth (2).

2. The extrusion structure of the sludge treatment line according to claim 1 is characterized by: The drainage groove (14) is located on the inner side wall relative to the length direction of the extruded tube (1) and is fixedly connected to a plurality of baffles (10). The plurality of baffles (10) are distributed in a circular array around the center line of the extruded tube (1) and are used to fit the inner side of the filter cloth (2).

3. The extrusion structure of the sludge treatment line according to claim 1 is characterized by: The outer tube wall of the extruded tube (1) is fixedly connected to a plurality of spring rods (8) distributed along the center line of the extruded tube (1) at positions on both sides of the drainage groove (14); the telescopic ends of the plurality of spring rods (8) on the same side are fixedly connected to a through-frame (4) plugged into the outer tube wall of the extruded tube (1); a roller (5) arranged parallel to the center line of the extruded tube (1) and rollingly connected to the inner side of the filter cloth (2) is rotatably connected inside the through-frame (4).

4. The extrusion structure of the sludge treatment line according to claim 3 is characterized by: A hydraulic rod (9) is fixedly connected to a position of the outer tube wall of the extruded tube (1) close to any penetration frame (4); the telescopic end of the hydraulic rod (9) is disc-shaped and is used to push the frame body of the penetration frame (4).

5. The extrusion structure of the sludge treatment line according to claim 4 is characterized in that: A high-pressure water spray pipe (11) is fixedly connected to one side of the through-frame (4) near the drainage groove (14), and a scraper (12) is fixedly connected to the inner side of the filter cloth (2) on one side of the high-pressure water spray pipe (11) near the drainage groove (14).

6. The extrusion structure of the sludge treatment line according to claim 5, characterized in that: The outer tube wall of the extrusion tube (1) is located between the drainage groove (14) and the scraper (12) and is rotatably connected to a rolling water retaining column (13) that is rollingly connected to the inner side surface of the filter cloth (2). The rolling water retaining column (13), the scraper (12) and the high-pressure water spraying pipe (11) are all arranged along the width direction of the filter cloth (2).

7. The extrusion structure of the sludge treatment line according to claim 1, characterized in that: The outer tube wall of the extruded tube (1) is fixedly connected to a motor for driving the winding roller (3) to rotate.

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