Sludge cleaning device for sewage treatment tank of paper mill

Abstract

The utility model relates to the technical field of sewage treatment tanks, in particular to a sludge cleaning device for a sewage treatment tank of a paper mill, which comprises a sedimentation tank, a blow-off pipe is communicated and mounted at the bottom of the sedimentation tank, a rotating pipe is rotatably mounted in the center of the bottom of the sedimentation tank along the vertical direction, and a sliding rod is slidably assembled on the inner wall of the rotating pipe along the axial direction. A sleeve is fixedly mounted at the upper end of the sliding rod, a scraping plate is fixedly assembled on the outer circumferential surface of the sleeve, and the scraping plate is attached to the inner wall of the sedimentation tank; a plurality of electric push rods are fixedly assembled on the outer circumferential surface of the sedimentation tank, the output ends of all the electric push rods are jointly connected with a bearing ring, and the bearing ring is arranged below the pressing plate and is in sliding connection with the pressing plate. According to the sludge cleaning device, the height of the scraper blade can be synchronously changed along with the movement of the bearing ring in the vertical direction, so that the scraper blade can push sludge with proper thickness to move, the sludge can be conveniently cleaned, and the cleaning efficiency is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to sewage treatment tank technical field especially paper mill sewage treatment tank sludge cleaning device. BACKGROUND

[0002] When treating the sewage of paper mill, the sedimentation tank is used to carry out the sedimentation treatment to the sewage, because the waste water produced by the paper industry usually contains cellulose and other solid pollutants, therefore, after the sedimentation tank operates for a period of time, a large amount of sludge is accumulated on the inner wall, in order to avoid the sludge from hindering the normal work of the sedimentation tank, the cleaning device is needed to regularly dredge the inside of the sedimentation tank. However, the cleaning device used in the prior art has the following problems:

[0003] In the process of cleaning the sludge, the rotating scraper is used to scrape the sludge on the inner wall of the sedimentation tank, so that the sludge flows along the inner wall of the sedimentation tank and is discharged, but when the sludge is thick or hard, it is difficult to adjust the height of the scraper to scrape the sludge of appropriate thickness, so that the moving resistance of the scraper is large and the scraper cannot work normally, thereby reducing the cleaning efficiency.

[0004] In summary, the cleaning device in the prior art cannot adjust the height of the scraper according to the thickness and hardness of the sludge, so that the scraper can scrape the sludge of appropriate thickness, thereby causing the moving resistance of the scraper to be large and the scraper to be unable to work normally, thereby reducing the cleaning efficiency. Based on this, we propose a paper mill sewage treatment tank sludge cleaning device. UTILITY MODEL CONTENTS

[0005] In order to solve the above technical problems existing in the prior art, the utility model provides a pipe placing device for water supply and drainage engineering construction.

[0006] In order to achieve the above purpose, the utility model adopts the following technical scheme: the paper mill sewage treatment tank sludge cleaning device, including the sedimentation tank, the cross section of the sedimentation tank is circular, the lower end of the sedimentation tank is in the form of a stepped structure, the bottom of the sedimentation tank is connected and installed with a blowdown pipe, the bottom center of the sedimentation tank is rotatably installed along the vertical direction with a rotating pipe, the inner wall of the rotating pipe is slidably assembled with a slide rod along the axial direction, and the slide rod and the rotating pipe are kept relatively stationary in the circumferential direction, the upper end of the slide rod is fixedly installed with a sleeve pipe, the outer circumferential surface of the sleeve pipe is fixedly assembled with a scraper, and the scraper is arranged in close contact with the inner wall of the sedimentation tank.

[0007] The outer circumferential surface of the sedimentation tank is fixedly assembled with a plurality of electric push rods, the output ends of all the electric push rods are commonly connected with a receiving ring, the receiving ring is placed below the pressing plate and is slidably connected therewith, and the gap between the scraper and the inner wall of the sedimentation tank is changed through the movement of the receiving ring in the vertical direction.

[0008] Preferably, the outer circumferential surface of the sedimentation tank is fixedly provided with a plurality of fixed plates, and the lower surface of the bearing plate is fixedly provided with clamping plates corresponding to the fixed plates, the clamping plates being sleeved outside the fixed plates and being in sliding connection with the fixed plates.

[0009] Preferably, the side close to the bearing ring of the pressing plate is rotatably provided with a plurality of rolling balls, and the rolling balls abut against the upper surface of the bearing ring.

[0010] Preferably, the inside of the blow-off pipe is rotatably provided with an auger.

[0011] Preferably, the inner wall of the blow-off pipe is rotatably connected with a first tooth ring, the first tooth ring is connected with the central shaft of the auger through the annularly distributed connecting rods, the outer circumferential surface of the rotating pipe is fixedly provided with a second tooth ring, the position of the blow-off pipe relative to the second tooth ring is provided with a clearance hole, and the second tooth ring is engaged with the first tooth ring through the clearance hole.

[0012] Preferably, the bottom of the sedimentation tank is fixedly provided with a stand, the inner wall of the stand is clampingly connected with a mounting plate, and the surface of the mounting plate is fixedly provided with a plurality of steel wires, one end of the steel wire abutting against the tooth surface of the second tooth ring.

[0013] Preferably, the surface of the mounting plate is fixedly provided with a magnet plate, the stand is an iron column, and the magnet plate abuts against the surface of the stand.

[0014] Compared with the prior art, the pipe placing device for water supply and drainage engineering construction has the following beneficial effects:

[0015] (1) In the utility model, when the sludge is relatively hard, the output end of the control electric push rod is stretched, the bearing ring moves upward, at this time, the pressing plate moves upward synchronously, and then the scraper moves upward, so that the thickness of the sludge scraped by the scraper is reduced, and the working of the scraper is ensured; when the sludge is relatively soft, the output end of the control electric push rod is retracted, the scraper moves downward under the influence of its own weight, and thus the speed of scraping the sludge by the scraper is improved; therefore, along with the movement of the bearing ring in the vertical direction, the height of the scraper changes synchronously, so that the scraper can push the sludge with a suitable thickness to move, and then the sludge is conveniently cleaned, and the cleaning efficiency is improved.

[0016] (2) In the process of rotating the motor, the rotating pipe drives the second tooth ring to rotate, the second tooth ring drives the first tooth ring to rotate, and thus the auger is utilized to accelerate the flow speed of the sludge in the blow-off pipe, so that the sludge is prevented from accumulating in the blow-off pipe.

[0017] (3) The steel wire in the utility model can clean the tooth surface of the second tooth ring, so that the meshing of the second tooth ring and the first tooth ring is prevented from being affected by the attachment of particles such as stones on the tooth surface of the second tooth ring, and the stability of the device during operation is improved. BRIEF DESCRIPTION OF DRAWINGS

[0018] The accompanying drawings are used to provide further understanding of the present application and constitute a part of the specification, and are used to explain the present application together with embodiments of the present application, and do not constitute a limitation on the present application, and in the drawings:

[0019] Figure 1 It is a structural schematic view of the whole paper mill sewage treatment tank sludge cleaning device of the present application;

[0020] Figure 2 It is another angle structural schematic view of the whole paper mill sewage treatment tank sludge cleaning device of the present application;

[0021] Figure 3 It is a structural schematic view of the scraper of the present application;

[0022] Figure 4 It is a split structural schematic view of the scraper of the present application;

[0023] Figure 5 It is a structural schematic view of the present application Figure 2 It is an enlarged view of A in the present application;

[0024] Figure 6 It is a cross-sectional structural schematic view of the blow-off pipe of the present application.

[0025] Legend: 1, sedimentation tank; 2, blow-off pipe; 3, motor; 4, rotating pipe; 5, sliding rod; 6, sleeve; 7, scraper; 8, pressing plate; 9, electric push rod; 10, receiving ring; 11, ball; 12, fixed plate; 13, clamping plate; 14, first tooth ring; 15, auger; 16, second tooth ring; 17, stand column; 18, mounting plate; 19, steel wire; 20, magnet plate. DETAILED DESCRIPTION

[0026] The technical solutions in the embodiments of the present application will be described clearly and completely below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. The components of the embodiments of the present application described and shown in the drawings herein can be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of the present application provided in the drawings is not intended to limit the scope of the claimed present application, but only represents selected embodiments of the present application. Based on the embodiments of the present application, all other embodiments obtained by those skilled in the art without creative work fall within the scope of the present application.

[0027] In order to enable the above-mentioned purposes, features and advantages of the present application to be more clearly understood, the present application will be described in further detail below with reference to the drawings and embodiments. It should be noted that the embodiments of the present application and the features in the embodiments can be combined with each other without conflict.

[0028] In the following description, many specific details are set forth in order to provide a thorough understanding of the present application, but the present application can be practiced without the specific details, which are different from the description, and therefore, the present application is not limited to the specific embodiments disclosed in the following description.

[0029] As Figures 1-6 The present application provides a paper mill sewage treatment tank sludge cleaning device, including the sedimentation tank 1, the cross section of the sedimentation tank 1 is circular, the lower end is in the form of a ladder structure, the bottom of the sedimentation tank 1 is connected and installed with the blow-off pipe 2 (the blow-off pipe 2 is distributed at the non-circular center of the bottom of the sedimentation tank 1), when the sewage is treated by sedimentation, the sewage is discharged into the sedimentation tank 1 and the flocculating agent is added, and at the same time, the blow-off pipe 2 is closed to make the sewage stand still, when the sewage is sedimented and stratified, the clear water in the upper layer is pumped away, and the sludge is discharged from the blow-off pipe 2.

[0030] The bottom of the sedimentation tank 1 is fixedly installed with the motor 3, the bottom center of the sedimentation tank 1 is rotatably installed with the rotating pipe 4 along the vertical direction, the output end of the motor 3 is fixedly connected with the rotating pipe 4 through the shaft coupling, the inner wall of the rotating pipe 4 is slidably assembled with the slide rod 5 along the axial direction, the upper end of the slide rod 5 is fixedly connected with the sleeve pipe 6, the outer circumferential surface of the sleeve pipe 6 is fixedly assembled with the scraper 7, the scraper 7 is kept in close contact with the inner wall of the sedimentation tank 1, when it is needed to clean the sludge attached to the inner wall of the sedimentation tank 1, the motor 3 is started, the motor 3 drives the rotating pipe 4 and the slide rod 5 to rotate synchronously, the sleeve pipe 6 rotates with the slide rod 5 to drive the scraper 7 to rotate and scrape off the sludge.

[0031] In practical application, when the sludge is thick or hard, the contact area of the scraper 7 with the sludge increases during rotation, and the resistance received by the scraper 7 increases, and the load of the motor 3 increases, which may cause the motor 3 to be overloaded and damaged. In order to avoid the above phenomenon, a plurality of electric push rods 9 are fixedly arranged on the outer circumferential surface of the sedimentation tank 1. The output ends of all the electric push rods 9 are connected with a receiving ring 10. The receiving ring 10 is arranged below the pressing plate 8 and is slidably connected with the pressing plate 8. When the sludge is hard, the output ends of the electric push rods 9 are controlled to be elongated, and the receiving ring 10 moves upward. At this time, the pressing plate 8 moves upward synchronously, and the scraper 7 moves upward, thereby reducing the thickness of the sludge scraped by the scraper 7 and reducing the resistance received by the scraper 7. When the sludge is soft, the output ends of the electric push rods 9 are controlled to be elongated, and the scraper 7 moves downward under the action of its own gravity, thereby improving the efficiency of the scraper 7 in scraping the sludge. In the embodiment, the scraper 7 can change the gap between the scraper 7 and the inner wall of the sedimentation tank 1 under the action of the receiving ring 10, so that the scraper 7 can push the sludge with a suitable thickness to move, thereby facilitating the cleaning of the sludge and improving the flexibility of the whole device.

[0032] In the above scheme, since the scraper 7 needs to rotate in the horizontal direction and move linearly in the vertical direction, the slide rod 5 and the rotating pipe 4 need to be limited in the circumferential direction and can slide relative to each other in the axial direction. In the embodiment, the slide rod 5 is provided in a prism structure, including but not limited to a hexagonal prism structure, as long as the rotating pipe 4 and the slide rod 5 can be kept stationary relative to each other in the circumferential direction.

[0033] Further, the pressing plate 8 and the receiving ring 10 are in sliding friction during the rotation of the scraper 7. In order to reduce the resistance when the pressing plate 8 moves, a plurality of balls 11 are installed at the bottom of the pressing plate 8. Specifically, a plurality of balls 11 are rotatably installed on the side of the pressing plate 8 close to the receiving ring 10. The balls 11 abut against the upper surface of the receiving ring 10, and the rolling friction between the pressing plate 8 and the receiving ring 10 is formed through the balls 11, thereby reducing the friction therebetween.

[0034] In addition, in order to prevent the receiving ring 10 from tilting and deviating, affecting the supporting effect of the pressing plate 8, in the embodiment, the movement path of the receiving ring 10 is limited by the fixed plate 12 and the clamping plate 13. Specifically, a plurality of fixed plates 12 are fixedly installed on the outer circumferential surface of the sedimentation tank 1, and a clamping plate 13 corresponding to the fixed plate 12 is fixedly installed on the lower surface of the receiving ring 10. The clamping plate 13 is sleeved outside the fixed plate 12 and is slidably connected with the fixed plate 12. When the receiving ring 10 moves, the clamping plate 13 slides along the surface of the fixed plate 12, thereby preventing the receiving ring 10 from tilting and deviating.

[0035] The sludge in the sedimentation tank 1 enters into the blow-off pipe 2 under the action of the scraper 7, in order to promote the sludge to be discharged quickly in the blow-off pipe 2 and avoid the sludge from being accumulated, a screw conveyor 15 is rotatably arranged in the blow-off pipe 2, the screw conveyor 15 rotates at high speed to generate axial thrust on the sludge, so that the sludge in the blow-off pipe 2 is discharged quickly, and the driving force of the screw conveyor 15 in the embodiment is also provided by the motor 3, and the specific arrangement is that a first tooth ring 14 is rotatably connected to the inner wall of the blow-off pipe 2, the inner circumferential surface of the first tooth ring 14 is fixedly provided with the screw conveyor 15 (the first tooth ring 14 is connected to the central shaft of the screw conveyor 15 through a connecting rod arranged in a ring shape), the outer circumferential surface of the rotating pipe 4 is fixedly provided with a second tooth ring 16, the position of the blow-off pipe 2 relative to the second tooth ring 16 is provided with a clearance hole, and the second tooth ring 16 is engaged with the first tooth ring 14 through the clearance hole.

[0036] Since the second tooth ring 16 is exposed, in order to avoid the tooth surface of the second tooth ring 16 from being affected by the particles such as stones and affecting the engagement between the second tooth ring 16 and the first tooth ring 14, a stand 17 is fixedly arranged at the bottom of the sedimentation tank 1, a mounting plate 18 is clamped and connected to the inner wall of the stand 17, a plurality of steel wires 19 are fixedly arranged on the surface of the mounting plate 18, and one end of the steel wire 19 abuts against the tooth surface of the second tooth ring 16; when the second tooth ring 16 rotates, the steel wire 19 can scrape off the particles such as stones attached to the surface of the second tooth ring 16.

[0037] The steel wire 19 will be worn after long-time work, and therefore needs to be replaced regularly, a magnet plate 20 is fixedly arranged on the surface of the mounting plate 18, the stand 17 is specifically an iron column, and the magnet plate 20 abuts against the surface of the stand 17, when the steel wire 19 is replaced, the mounting plate 18 is moved downward and taken out from the stand 17, then the mounting plate 18 with a new steel wire 19 is slid into the inner wall of the stand 17, when the magnet plate 20 contacts the stand 17, the magnet plate 20 is attracted to the surface of the stand 17 by the magnetic force of the magnet plate 20, and the magnet plate 20 limits the position of the mounting plate 18, thereby limiting the position of the steel wire 19.

[0038] In the description of the utility model, the terms "first", "second", "another", "yet another" are only for the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features limited by "first" and "second" can explicitly or implicitly include one or more features. In the description of the embodiments of the utility model, the meaning of "a plurality of" is two or more than two, unless otherwise specifically limited.

[0039] In the description of the utility model, it is necessary to explain, unless another explicit provision and limitation, the term "link", "connection" should do broad sense understanding, for example, can be fixed connection, also can be detachable connection, or integrally connected;Can be mechanical connection, also can be electrical connection;Can be directly connected, also can be indirectly connected through the intermediate medium.For the ordinary skilled person in the art, the specific meaning of the above-mentioned terms in the utility model can be understood according to the specific circumstances.In addition, in the description of the utility model, unless otherwise stated, the meaning of "multiple" is two or more than two.

[0040] Although the embodiments of the utility model have been shown and described, those ordinarily skilled in the art can understand that various changes, modifications, replacements and variations can be made to these embodiments without departing from the principles and purposes of the utility model, and the scope of the utility model is defined by the claims and their equivalents.

Claims

1. A paper mill sewage treatment tank sludge cleaning device, comprising a sedimentation tank (1), the cross section of the sedimentation tank (1) is circular, the lower end of the sedimentation tank (1) is in a stepped structure, and a sewage discharge pipe (2) is communicated and installed at the bottom of the sedimentation tank (1), characterized in that: The bottom center of the sedimentation tank (1) is rotatably installed with a rotating pipe (4) in the vertical direction, the inner wall of the rotating pipe (4) is slidably assembled with a slide rod (5) in the axial direction, and both are relatively stationary in the circumferential direction, the upper end of the slide rod (5) is fixedly installed with a sleeve pipe (6), the outer circumferential surface of the sleeve pipe (6) is fixedly assembled with a scraper (7), and the scraper (7) is arranged in close contact with the inner wall of the sedimentation tank (1); The outer circumferential surface of the sedimentation tank (1) is fixedly assembled with a plurality of electric push rods (9), the output ends of all the electric push rods (9) are commonly connected with a receiving ring (10), the receiving ring (10) is placed below the pressing plate (8) and is slidably connected therewith, and the gap between the scraper (7) and the inner wall of the sedimentation tank (1) is changed through the movement of the receiving ring (10) in the vertical direction.

2. A paper mill effluent lagoon sludge cleaning apparatus as defined in claim 1, characterized by: The outer circumferential surface of the sedimentation tank (1) is fixedly installed with a plurality of fixed plates (12), the lower surface of the receiving plate is fixedly installed with a clamping plate (13) corresponding to the fixed plate (12), and the clamping plate (13) is sleeved outside the fixed plate (12) and is slidably connected therewith.

3. A paper mill effluent lagoon sludge cleaning apparatus as defined in claim 2, characterized by: The side of the pressing plate (8) close to the receiving ring (10) is rotatably installed with a plurality of ball bearings (11), and the ball bearings (11) abut against the upper surface of the receiving ring (10).

4. A paper mill effluent lagoon sludge cleaning apparatus as claimed in any one of claims 1 to 3, characterized by: The inside of the blowdown pipe (2) is rotatably installed with an auger (15).

5. A paper mill effluent lagoon sludge cleaning apparatus as defined in claim 4, characterized by: The inner wall of the blowdown pipe (2) is rotatably connected with a first gear ring (14), the first gear ring (14) is connected with the central shaft of the auger (15) through a link distributed in a ring shape, the outer circumferential surface of the rotating pipe (4) is fixedly installed with a second gear ring (16), the position of the blowdown pipe (2) relative to the second gear ring (16) is provided with a clearance hole, and the second gear ring (16) is engaged with the first gear ring (14) through the clearance hole.

6. A paper mill effluent lagoon sludge cleaning apparatus as defined in claim 5, characterized by: The bottom of the sedimentation tank (1) is fixedly installed with a stand column (17), the inner wall of the stand column (17) is clampingly connected with a mounting plate (18), the surface of the mounting plate (18) is fixedly installed with a plurality of steel wires (19), and one end of the steel wire (19) abuts against the tooth surface of the second gear ring (16).

7. A paper mill effluent lagoon sludge cleaning apparatus as defined in claim 6, characterized by: The surface of the mounting plate (18) is fixedly installed with a magnet plate (20), the stand column (17) is an iron column, and the magnet plate (20) abuts against the surface of the stand column (17).

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