Sludge drying device

Abstract

The utility model belongs to the technical field of sludge drying, and particularly relates to a sludge drying device which comprises a base, two supporting seats are fixedly connected to the base, a tank body is fixedly connected to the two supporting seats in a matched mode, a supporting frame is fixedly connected to the base, an installation seat is fixedly connected to the supporting frame, a material mixing barrel is fixed in the installation seat, and the material mixing barrel is fixedly connected with the tank body. A bottom port of the mixing barrel is communicated with a transfer barrel, a fixing column is mounted on the side wall of the supporting frame, a bearing disc is fixedly connected to the fixing column, the transfer barrel is rotatably mounted in the bearing disc, and an annular rack is fixed to the outer surface of the transfer barrel; in the sludge drying treatment process, most of free water and part of interstitial water in the sludge can be removed through combination of flocculation and centrifugal dewatering, and the energy consumption of subsequent heating and drying is reduced, so that the energy consumption and the cost of overall sludge drying are reduced, the overall treatment time is shortened through the efficient mixing and dewatering process, and the sludge drying efficiency is improved. The treatment efficiency is greatly improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to a sludge drying technical field, concretely is a kind of sludge drying device. BACKGROUND

[0002] Municipal sludge is one of main solid wastes generated in urban development, and the main requirements of solid waste treatment are reduction, harmlessness and resource utilization, and reduction is the primary requirement of solid waste treatment, and for sludge, the core of its reduction treatment is to reduce its moisture content, i.e., sludge drying, which not only facilitates the storage and transportation of sludge, but also provides favorable conditions for the terminal treatment of sludge such as incineration and pyrolysis.

[0003] A sludge drying device disclosed in a Chinese patent with publication number CN117247219A includes an auger conveyor and a microwave heater, the main shaft of the auger conveyor includes a front section main shaft and a rear section main shaft, the spiral blade includes a front section blade and a rear section blade, the front section main shaft and the front section blade are made of carbon steel, and the rear section main shaft and the rear section blade are made of silicon carbide; the sludge is first preliminarily dried at the front section blade to remove the main moisture, and then enters the rear section blade for deep drying to complete deep dewatering, which can improve the drying efficiency and increase the heat energy utilization rate. By selecting silicon carbide material for processing the rear section main shaft and the rear section blade, on the one hand, the good wave-absorbing property of silicon carbide can be utilized to deeply dry the preliminarily dried sludge, and on the other hand, the processing cost of the equipment can be reduced, and the device is easy to popularize.

[0004] The above-mentioned sludge drying device directly uses the heating, drying and dewatering method when drying the sludge, which usually consumes a large amount of heat energy, especially for sludge with high water content, to achieve the ideal drying effect, the required energy consumption is higher, and such high energy consumption not only increases the operating cost; therefore, a sludge drying device is proposed to solve the above-mentioned problems. UTILITY MODEL CONTENTS

[0005] In order to make up for the deficiencies of the prior art and solve the problems raised in the background art, the utility model provides a sludge drying device.

[0006] The utility model discloses a technical scheme that solves its technical problem is: A kind of sludge drying device described in the utility model, including base, two support seats are fixedly connected on the base, two support seats are cooperatively fixedly connected with tank body, support frame is fixedly connected on the base, mounting seat is fixedly connected on the support frame, mixing barrel is fixed in the mounting seat, the bottom port of the mixing barrel is connected with transfer drum, fixed column is installed on the lateral wall of the support frame, the fixed column is fixedly connected with supporting tray, transfer drum is rotatably installed in the supporting tray, the outer surface of the transfer drum is fixed with annular rack, the top side of the tank body is installed with first motor, the output of the first motor is installed with gear, and the gear and annular rack are mutually engaged, taper slot is opened on the circumferential surface of the transfer drum, multiple overflow holes are opened on the inner wall of the transfer drum, the bottom of the transfer drum and supporting tray is respectively provided with multiple water leakage ports, the bottom side of the supporting tray is fixedly connected with water collecting tank, the bottom side of the water collecting tank is connected with drain pipe, the transfer drum and tank body are connected by guide pipe, and the upper port of the guide pipe is rotatably connected with transfer drum, the bottom port of the guide pipe is fixedly connected in tank body, in the sludge drying treatment process, after flocculation sludge flows into transfer drum, start first motor, make gear rotate, in turn force annular rack drive transfer drum rotate, by the high-speed rotation of transfer drum, under the action of centrifugal force, the water in flocculation sludge can be thrown to taper slot through overflow hole, then flow into water collecting tank through water leakage port, so that the water in flocculation sludge can be effectively thrown out, further reduce the water content of sludge, by the combination of flocculation and centrifugal dewatering, most of the free water and part of the interstitial water in sludge can be removed, the energy consumption of subsequent heating drying is reduced, which helps to reduce the energy consumption and cost of overall sludge drying, efficient mixing and dewatering process shortens the overall processing time, greatly improves the processing efficiency.

[0007] Preferably, the top of the mixing barrel is provided with a second motor, the output end of the second motor is connected with a rotating rod, a plurality of stirring blades are fixed on the outer surface of the rotating rod, and a spiral blade is fixed at the bottom end of the rotating rod. When the sludge is dried and treated, the second motor is started, the rotating rod drives the stirring blades and the spiral blade to rotate, so that the sludge and the flocculant in the mixing barrel can be fully and uniformly stirred and mixed, which helps to improve the flocculation effect and make the tiny particles in the sludge coagulate into larger flocs faster. Under the high-speed rotation of the spiral blade, the bottom discharge pipe of the mixing barrel can be prevented from being blocked, so that the flocculated sludge can flow smoothly into the transfer drum, facilitating further dewatering treatment.

[0008] Preferably, the top side of the mixing barrel is connected with a sludge feeding hopper and a reagent feeding pipe respectively, and the sludge feeding hopper and the reagent feeding pipe are located on the two sides of the second motor respectively, when the device is used, the sludge feeding hopper is arranged to facilitate adding the sludge to be treated into the mixing barrel, and the reagent feeding pipe is arranged to facilitate adding the flocculating agent or the solidifying agent into the mixing barrel.

[0009] Preferably, one end of the tank body is provided with a third motor, the output end of the third motor is connected with a rotating shaft, the outer surface of the rotating shaft is fixed with spiral stirring and conveying blades, the other end of the tank body away from the third motor is connected with a sludge discharging pipe, and a plurality of heating pipes are arranged in the annular groove in the circumferential surface of the tank body and are equidistantly arranged.

[0010] Preferably, the circumferential surface of the tank body is connected with a return pipe, the return pipe is connected with a shell, the shell is fixed to the tank body, and a suction fan is arranged in the shell.

[0011] The utility model has the advantages that:

[0012] 1. When the sludge is dried and treated, the second motor is started to drive the stirring blades and the spiral blades to rotate, so that the sludge and the flocculating agent in the mixing barrel can be fully and uniformly stirred and mixed, which helps to improve the flocculation effect and make the small particles in the sludge coagulate into larger flocs faster.

[0013] 2. The utility model discloses a sludge drying treatment process, the flocculation sludge flows into the transfer cylinder, starts the first motor, makes gear rotate, and further forces annular rack to drive transfer cylinder to rotate, through the high -speed rotation of transfer cylinder, under the action of centrifugal force, can be with the water content in the flocculation sludge through overflow hole and throw to conical groove, then through the water inlet of leaking flow into the water collecting tank, thereby can effectively throw out the water content in the flocculation sludge, further reduce the water content of sludge, through the combination of flocculation and centrifugal dewatering, can remove most of the free water and part of the interstitial water in the sludge, reduce the energy consumption of subsequent heating drying, this helps to reduce the energy consumption and cost of overall sludge drying, and efficient mixing and dewatering process shortens the overall processing time, greatly improves the processing efficiency. BRIEF DESCRIPTION OF DRAWINGS

[0014] In order to more clearly illustrate the technical scheme in the embodiments of the utility model or prior art, below will introduce the drawing needed to be used in the embodiment or prior art description, obviously, the drawing in the following description is only some embodiments of the utility model, for the ordinary skilled person in the art, under the premise of not paying the creative labor, can also obtain other drawings according to these drawings.

[0015] Figure 1 It is the whole three-dimensional structure schematic diagram for the device;

[0016] Figure 2 It is the sectional view three-dimensional structure schematic diagram for the tank;

[0017] Figure 3 It is the plane display structure schematic diagram for flocculation and centrifugal dewatering mechanism;

[0018] Figure 4 It is the sectional view three-dimensional structure schematic diagram for transfer cylinder;

[0019] Figure 5 It is the three-dimensional structure schematic diagram for transfer cylinder bottom side assembly.

[0020] In the drawing: 1, base;2, support seat;3, tank;4, support frame;5, mounting seat;6, mixing cylinder;7, second motor;8, rotating rod;9, stirring blade;10, spiral blade;11, fixed column;12, bearing tray;13, transfer cylinder;14, annular rack;15, first motor;16, gear;17, material guide pipe;18, overflow hole;19, conical groove;20, water leakage;21, water collecting tank;22, drain pipe;23, sludge feeding hopper;24, reagent feeding pipe;25, third motor;26, rotating shaft;27, spiral stirring conveying blade;28, annular groove;29, heating pipe;30, sludge discharge pipe;31, backflow pipe;32, shell;33, air suction fan. DETAILED DESCRIPTION

[0021] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments of the present application, all other embodiments obtained by those of ordinary skill in the art without creative labor fall within the scope of the present application.

[0022] Please refer to Figures 1-5 As shown in FIG. 1, a sludge drying device comprises a base 1, two support seats 2 are fixedly connected on the base 1, a tank body 3 is fixedly connected on the two support seats 2 in cooperation, a support frame 4 is fixedly connected on the base 1, a mounting seat 5 is fixedly connected on the support frame 4, a mixing cylinder 6 is fixedly arranged in the mounting seat 5, a bottom port of the mixing cylinder 6 is in communication with a transfer cylinder 13, a fixed column 11 is installed on a side wall of the support frame 4, a supporting tray 12 is fixedly connected on the fixed column 11, the transfer cylinder 13 is rotatably installed in the supporting tray 12, an annular gear rack 14 is fixedly arranged on an outer surface of the transfer cylinder 13, a first motor 15 is installed on a top side of the tank body 3, a gear 16 is installed on an output end of the first motor 15, and the gear 16 is in meshing with the annular gear rack 14, a tapered groove 19 is formed on a circumferential surface of the transfer cylinder 13, a plurality of overflow holes 18 are formed on an inner wall of the transfer cylinder 13, a plurality of water leakage ports 20 are respectively formed in the transfer cylinder 13 and the supporting tray 12, a water collecting tank 21 is fixedly connected on a bottom side of the supporting tray 12, a drain pipe 22 is connected on a bottom side of the water collecting tank 21, the transfer cylinder 13 and the tank body 3 are in communication through a material guide pipe 17, an upper port of the material guide pipe 17 is rotatably connected with the transfer cylinder 13, and a bottom port of the material guide pipe 17 is fixedly connected in the tank body 3. In the sludge drying process, after the flocculated sludge flows into the transfer cylinder 13, the first motor 15 is started to make the gear 16 rotate, and then the annular gear rack 14 drives the transfer cylinder 13 to rotate, through the high-speed rotation of the transfer cylinder 13, under the action of centrifugal force, the water in the flocculated sludge can be thrown into the tapered groove 19 through the overflow holes 18, then flows into the water collecting tank 21 through the water leakage ports 20, and finally is discharged through the drain pipe 22, so that the water in the flocculated sludge can be effectively thrown out, the water content of the sludge is further reduced, through the combination of flocculation and centrifugal dewatering, most of the free water and part of the interstitial water in the sludge can be removed, the energy consumption of subsequent heating and drying is reduced, which helps to reduce the energy consumption and cost of the overall sludge drying, the efficient mixing and dewatering process shortens the overall treatment time and greatly improves the treatment efficiency.

[0023] The top of the mixing cylinder 6 is provided with a second motor 7, the output end of the second motor 7 is connected with a rotating rod 8, the outer surface of the rotating rod 8 is fixed with a plurality of stirring blades 9, the bottom end of the rotating rod 8 is fixed with a spiral blade 10, one side of the top of the mixing cylinder 6 is respectively connected with a sludge feeding hopper 23 and a reagent feeding pipe 24, and the sludge feeding hopper 23 and the reagent feeding pipe 24 are respectively located on the two sides of the second motor 7; when the sludge is dried, the second motor 7 is started, the rotating rod 8 drives the stirring blades 9 and the spiral blade 10 to rotate, so that the sludge and the flocculating agent in the mixing cylinder 6 can be fully and uniformly stirred and mixed, which helps to improve the flocculation effect, so that the small particles in the sludge can be more quickly agglomerated into larger flocs, and under the high-speed rotation of the spiral blade 10, the bottom discharge pipe of the mixing cylinder 6 can be prevented from being blocked, so that the flocculated sludge can flow smoothly into the transfer cylinder 13, and further dewatering treatment can be facilitated.

[0024] Please refer to Figure 2 As shown in the figure, one end of the tank body 3 is provided with a third motor 25, the output end of the third motor 25 is connected with a rotating shaft 26, the outer surface of the rotating shaft 26 is fixed with a spiral stirring conveying blade 27, one end of the tank body 3 away from the third motor 25 is connected with a sludge discharge pipe 30, an annular groove 28 is formed on the circumferential surface of the tank body 3, a plurality of heating pipes 29 are arranged in the annular groove 28, and the plurality of heating pipes 29 are equidistantly arranged; during the sludge drying process, the sludge treated by flocculation and centrifugal dewatering flows into the tank body 3 through the material guide pipe 17, the third motor 25 is started, the spiral stirring conveying blade 27 rotates, under the action of the rotation of the spiral stirring conveying blade 27, the sludge is constantly stirred and uniformly contacted with the hot gas generated by the heating pipe 29, so as to realize further dewatering of the sludge, and the dewatered and dried sludge is discharged through the sludge discharge pipe 30. Since most of the water has been removed by flocculation and centrifugal dewatering in the early stage, the energy consumption of the heating and drying stage is relatively low.

[0025] The top side of the circumferential surface of the tank body 3 is connected with a reflux pipe 31, the reflux pipe 31 is connected with a shell 32, and the shell 32 is fixed on the tank body 3, and the shell 32 is provided with a suction fan 33; during the sludge drying process, the residual heat in the tank body 3 is reflowed into the initial end of the tank body 3 through the reflux pipe 31 by the action of the suction fan 33, which is used to preheat the sludge entering the tank body 3, thereby reducing the energy consumption required for heating.

[0026] Working principle: due to the above-mentioned sludge drying device, when the sludge is dried, the heating and drying dehydration method is directly used, which usually needs to consume a large amount of heat energy, especially for the sludge with high water content, the energy consumption required to achieve the ideal drying effect is higher, and such high energy consumption not only increases the operation cost; therefore, a sludge drying device is proposed for the above-mentioned problems; when the sludge is dried, the second motor 7 is started, the stirring blade 9 and the spiral blade 10 are driven to rotate by the rotating rod 8, so that the sludge and the flocculating agent in the mixing cylinder 6 can be fully and uniformly stirred and mixed, which helps to improve the flocculation effect, so that the small particles in the sludge can be more quickly agglomerated into larger flocculation, under the high-speed rotation of the spiral blade 10, the bottom discharge pipe of the mixing cylinder 6 can be prevented from being blocked, so that the flocculated sludge can smoothly flow into the transfer cylinder 13, and the subsequent further dehydration treatment is facilitated; after the flocculated sludge flows into the transfer cylinder 13, the first motor 15 is started, the gear 16 is rotated, and the annular rack 14 drives the transfer cylinder 13 to rotate, under the action of centrifugal force, the water in the flocculated sludge can be thrown into the conical groove 19 through the overflow hole 18 by the high-speed rotation of the transfer cylinder 13, then flow into the water collecting groove 21 through the water leakage hole 20, and finally be discharged through the drain pipe 22, so that the water in the flocculated sludge can be effectively thrown out, further reducing the water content of the sludge, through the combination of flocculation and centrifugal dehydration, most of the free water and part of the interstitial water in the sludge can be removed, reducing the energy consumption of subsequent heating and drying, which helps to reduce the energy consumption and cost of the whole sludge drying, the efficient mixing and dehydration process shortens the overall processing time and greatly improves the processing efficiency;

[0027] In the sludge drying process, the sludge treated by flocculation and centrifugal dehydration flows into the tank 3 through the guide pipe 17, the third motor 25 is started, and the spiral stirring conveying blade 27 rotates, under the action of the rotation of the spiral stirring conveying blade 27, the sludge is constantly turned over and uniformly contacted with the hot gas generated by the heating pipe 29, so as to realize further dehydration of the sludge, and the dehydrated and dried sludge is discharged through the discharge pipe 30, since most of the water has been removed by flocculation and centrifugal dehydration in the previous stage, the energy consumption of the heating and drying stage is also relatively low.

[0028] In the description of the present specification, the description of the terms "one embodiment", "example", "specific example" and the like means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are contained in at least one embodiment or example of the present application. In the present specification, the illustrative description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0029] The basic principle, main features and advantages of the present application are shown and described above. Those skilled in the art should understand that the present application is not limited by the above examples, and the above examples and descriptions in the specification are only to illustrate the principles of the present application. Without departing from the spirit and scope of the present application, various changes and improvements can be made to the present application, and these changes and improvements all fall within the scope of the claimed present application.

Claims

1. A sludge dewatering apparatus, characterised in that: The utility model provides a sludge mixing device, including the base (1), the base (1) is fixed with two support seat (2), two support seat (2) cooperation fixed with jar (3), the base (1) is fixed with support frame (4), support frame (4) is fixed with mounting seat (5), the mixing cylinder (6) is fixed in mounting seat (5), the bottom end of mixing cylinder (6) is linked with the transfer cylinder (13), the lateral wall of support frame (4) is installed with fixed column (11), the fixed column (11) is fixed with the support tray (12), the transfer cylinder (13) is rotatably installed in the support tray (12), the outer surface of transfer cylinder (13) is fixed with ring gear (14), the top side of jar (3) is installed with first motor (15), the output of first motor (15) is installed with gear (16), and gear (16) is engaged with ring gear (14), the circumferential surface of transfer cylinder (13) is provided with tapered groove (19), a plurality of overflow holes (18) are formed in the inner wall of transfer cylinder (13), a plurality of water leakage openings (20) are formed in the bottom of transfer cylinder (13) and support tray (12) respectively, the bottom side of support tray (12) is fixed with water collecting tank (21), the bottom side of water collecting tank (21) is connected with drain pipe (22), transfer cylinder (13) and jar (3) are communicated through material guide pipe (17), and the upper end of material guide pipe (17) is rotatably connected with transfer cylinder (13), and the bottom end of material guide pipe (17) is fixed in jar (3).

2. A sludge dewatering apparatus as claimed in claim 1, characterised in that: The top of mixing cylinder (6) is installed with second motor (7), the output of second motor (7) is connected with rotating rod (8), the outer surface of rotating rod (8) is fixed with a plurality of stirring blades (9), the bottom end of rotating rod (8) is fixed with spiral blade (10).

3. A sludge dewatering device as claimed in claim 1, characterized in that: The top side of mixing cylinder (6) is connected with sludge feeding hopper (23) and medicament feeding pipe (24) respectively, and sludge feeding hopper (23) and medicament feeding pipe (24) are located on the two sides of second motor (7) respectively.

4. A sludge dewatering device as claimed in claim 1, characterized in that: One end of jar (3) is installed with third motor (25), the output of third motor (25) is connected with rotating shaft (26), the outer surface of rotating shaft (26) is fixed with spiral stirring conveying blade (27), and the one end of jar (3) away from third motor (25) is connected with sludge discharge pipe (30).

5. A sludge dewatering device as claimed in claim 1, characterized in that: The circumferential surface of jar (3) is provided with annular groove (28), a plurality of heating pipes (29) are arranged in annular groove (28), and the plurality of heating pipes (29) are equidistantly arranged.

6. A sludge dewatering device as claimed in claim 1, characterized in that: The circumferential surface top side of jar (3) is connected with return pipe (31), the return pipe (31) is connected with shell (32), and the shell (32) is fixed on jar (3), and the shell (32) is provided with air suction fan (33).

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