Drying machine for sludge brickmaking and using method of drying machine

Abstract

The invention discloses a drying machine for sludge brick making. The drying machine comprises a shell, and an electric heating ring is arranged in the shell; the lifting mechanism is used for lifting the electric heating ring and comprises a mounting frame mounted at the upper end of the shell, a driving motor is mounted on the mounting frame, an output shaft of the driving motor extends into the shell and is fixedly connected with a reciprocating screw rod, and the lower end of the reciprocating screw rod is rotationally connected with the inner bottom of the shell; the reciprocating lead screw is in threaded connection with a sliding block, and the left side of the sliding block is fixedly connected with an electric heating ring; the sludge stirring mechanism is matched with the lifting mechanism and is used for stirring the sludge. The invention further discloses a using method of the sludge brick making drying machine. The heating uniformity during drying is effectively improved, so that the actual drying effect is improved, and in addition, odor generated during drying can be prevented from diffusing to the surrounding.

Description

Technical Field

[0001] The present invention relates to the field of sludge brick making, in particular to a dryer for sludge brick making and a use method thereof. Background Art

[0002] With the acceleration of urbanization and the continuous increase in sewage treatment volume, the amount of sludge, a by-product of sewage treatment, has also increased dramatically. Sludge contains a large amount of water and organic matter. If not properly treated, it will not only occupy a large amount of land resources, but also may cause secondary pollution to the environment. Therefore, the effective treatment and resource utilization of sludge has become an important issue in the current environmental protection field. In the resource utilization process of sludge brick making, drying is a key step to remove sludge moisture and increase its utilization value.

[0003] However, traditional sludge drying technology often has problems such as uneven heating and poor drying effect, resulting in incomplete sludge drying, affecting the quality of subsequent brick-making processes. At the same time, the sludge will produce a large amount of foul-smelling gases such as ammonia and hydrogen sulfide during the drying process. These gases can easily diffuse into the surrounding environment, causing serious impacts on air quality and residents' lives. Summary of the Invention

[0004] The purpose of the present invention is to solve the shortcomings of the prior art and to propose a sludge brick making dryer and a method of using the same. During actual use, the dryer effectively improves the uniformity of heating during drying, thereby improving the actual drying effect. In addition, it can also prevent the odor generated during drying from spreading to the surrounding area.

[0005] In order to achieve the above object, the present invention adopts the following technical solutions:

[0006] A dryer for making sludge bricks, comprising a shell, an electric heating ring being arranged inside the shell; a lifting mechanism, the lifting mechanism being used to lift the electric heating ring, the lifting mechanism comprising a mounting frame installed at the upper end of the shell, a drive motor being installed on the mounting frame, the output shaft of the drive motor extending into the interior of the shell and fixedly connected to a reciprocating screw, the lower end of the reciprocating screw being rotatably connected to the inner bottom of the shell, a slider being threadedly connected to the reciprocating screw, the left side of the slider being fixedly connected to the electric heating ring; a sludge stirring mechanism, the sludge stirring mechanism cooperating with the lifting mechanism to stir the sludge and improve the overall temperature uniformity; a gas extraction mechanism, the gas extraction mechanism being able to extract water vapor generated by evaporation, while preventing the odor generated during sludge drying from affecting the surroundings.

[0007] Preferably, a feeding port is installed at the upper end of the shell, and a sludge pump is installed at the bottom of the shell, and the sludge inlet end of the sludge pump extends to the inner bottom of the shell.

[0008] Preferably, the sludge stirring mechanism includes a rotating shaft rotatably connected between the upper and lower inner walls of the shell, a plurality of stirring rods are fixedly connected to the rotating shaft, and the upper end of the rotating shaft extends to the outside and is equipped with a gear.

[0009] Preferably, the upper end of the shell is fixedly connected to a fixed plate, and a rectangular slide is horizontally provided on the fixed plate, and the rectangular slide passes through the fixed plate and is slidably connected, and the left side of the rectangular slide is fixedly connected to a rack, and the rack is engaged with the gear, and the right side of the rectangular slide is fixedly connected to a movable plate, and the left side of the movable plate is elastically connected to the right side of the fixed plate through a first spring, and the output shaft of the drive motor is fixedly connected to a cam, and the cam is against the movable plate.

[0010] Preferably, a guide rod is fixedly connected between the upper and lower inner walls of the shell, and the guide rod passes through the slider and is slidably connected to the slider.

[0011] Preferably, the gas extraction mechanism includes a mounting base connected to the upper end of the shell, a piston cylinder is installed on the upper end of the mounting base, a piston block that can slide left and right is provided inside the piston cylinder, the left side of the rack is fixedly connected to the piston block by a connecting rod, the space of the piston cylinder is connected to the first one-way tube and the second one-way tube, and a one-way valve is installed inside the first one-way tube and the second one-way tube.

[0012] Preferably, the one-way valve inside the second one-way tube flows in a one-way direction from the top of the shell into the piston cylinder, and the one-way valve inside the first one-way tube flows in a one-way direction from the piston cylinder to the outside.

[0013] Preferably, an air intake cylinder is fixedly connected to the left side of the shell, and the air intake cylinder is connected to the interior of the shell through a connecting port. A circular opening is opened on the left side wall of the air intake cylinder, and a piston column is horizontally penetrated through the circular opening. The piston column is slidably connected to the circular opening, and the right side of the piston column is elastically connected to the right side wall of the air intake cylinder through a second spring. The upper end of the piston column is fixedly connected to an L-shaped rod, and the horizontal part of the L-shaped rod penetrates the air intake cylinder and is slidably connected.

[0014] The present invention also discloses a method for using a sludge brick-making dryer, which uses the dryer and comprises the following steps:

[0015] Step 1: Add the sludge to be dried into the shell through the feeding port. After adding, immediately seal the feeding port to prevent gas leakage and external impurities from entering during the drying process.

[0016] Step 2: Start the electric heating ring to heat the sludge. At the same time, start the drive motor to drive the reciprocating screw to rotate. The slider moves up and down on the reciprocating screw, thereby driving the electric heating ring to rise and fall, achieving heating of different heights of the sludge, ensuring that the sludge is heated evenly and improving the drying efficiency;

[0017] Step 3: The output shaft of the driving motor drives the cam to rotate at the same time. The cam abuts against the moving plate, causing the moving plate to drive the rectangular slide to move left and right. The rack is fixedly connected to the rectangular slide, so the rack also moves left and right, and drives the rotating shaft to rotate forward and reverse through the gear. The stirring rod on the rotating shaft stirs the sludge to promote uniform sludge temperature.

[0018] Step 4: The left and right movement of the rack drives the piston block in the piston cylinder to slide left and right through the connecting rod. When the piston block moves to the right, the exhaust gas at the top of the shell enters the piston cylinder through the one-way valve of the second one-way pipe; when the piston block moves to the left, the exhaust gas in the piston cylinder is discharged through the one-way valve of the first one-way pipe;

[0019] Step 5: After the drying operation is completed, the sludge is pumped to the subsequent process through the sludge pump.

[0020] Compared with the prior art, the present invention has the following beneficial effects:

[0021] 1. Through the design of the lifting mechanism, the electric heating ring can move up and down inside the shell to uniformly heat the sludge at different heights; this dynamic heating method avoids the local overheating or overcooling that may be caused by traditional fixed heating methods, ensuring the temperature uniformity of the sludge during the drying process, thereby improving the drying efficiency and quality;

[0022] 2. The sludge stirring mechanism continuously stirs the sludge through the forward and reverse rotating shaft and stirring rod. This stirring not only promotes heat transfer within the sludge, but also accelerates the evaporation of water in the sludge, further improving the drying efficiency. At the same time, stirring also helps prevent the sludge from agglomerating during the drying process, ensuring the looseness of the sludge and the convenience of subsequent treatment.

[0023] 3. The gas extraction mechanism achieves effective extraction and treatment of exhaust gas in the housing through the coordinated work of the rack, connecting rod and piston cylinder. When the piston block slides left and right, the exhaust gas in the housing is alternately sucked into and discharged from the piston cylinder and discharged to the external exhaust gas treatment device through the first one-way pipe. This design not only avoids the accumulation of exhaust gas in the housing, but also effectively prevents the spread of odor generated by sludge drying to the surrounding environment, protecting the working environment and personnel health.

[0024] 4. The design of the air inlet cylinder and piston rod enables the shell to always maintain a low pressure state; under the low pressure environment, the boiling point of water in the sludge is reduced, the evaporation efficiency is improved, thereby promoting the rapid drying of the sludge; this low-pressure drying method not only saves energy, but also improves drying efficiency and reduces drying costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1This is a schematic structural diagram of a sludge brick-making dryer proposed by the present invention;

[0026] Figure 2 for Figure 1 Schematic cross-sectional view of ;

[0027] Figure 3 for Figure 2 Schematic diagram of the front structure;

[0028] Figure 4 for Figure 1 Schematic diagram of the top part structure;

[0029] Figure 5 for Figure 4 sectional view of

[0030] Figure 6 A cross-sectional view of the air intake cylinder.

[0031] In the figure: 1 housing, 2 sludge pump, 3 feeding port, 4 piston cylinder, 5 mounting frame, 6 driving motor, 7 air inlet cylinder, 8 rotating shaft, 9 stirring rod, 10 electric heating ring, 11 first one-way pipe, 12 reciprocating screw, 13 slider, 14 guide rod, 15 cam, 16 moving plate, 17 fixed plate, 18 first spring, 19 rectangular slide, 20 gear, 21 rack, 22 mounting seat, 23 connecting rod, 24 connecting port, 25 second one-way pipe, 26 piston block, 27 piston column, 28 round port, 29 L-shaped rod, 30 second spring. DETAILED DESCRIPTION

[0032] The technical solutions in the embodiments of the present invention will be described clearly and completely below with reference to the accompanying drawings in the embodiments of the present invention.

[0033] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, they indicate the presence of features, steps, operations, devices, components and / or combinations thereof.

[0034] Reference Figures 1-6 A sludge brick making dryer includes a shell 1, an electric heating ring 10 is provided inside the shell 1, a feeding port 3 is installed at the upper end of the shell 1, and the feeding port 3 adopts a sealable structure. When drying, the feeding port 3 can be sealed. A sludge pump 2 is installed in the shell 1, and the sludge inlet end of the sludge pump 2 extends to the inner bottom of the shell 1;

[0035] As an embodiment of the present invention, it also includes a lifting mechanism, which is used to lift the electric heating ring 10. The lifting mechanism includes a mounting frame 5 installed at the upper end of the shell 1, and a drive motor 6 is installed on the mounting frame 5. The output shaft of the drive motor 6 extends into the interior of the shell 1 and is fixedly connected to a reciprocating screw rod 12. The lower end of the reciprocating screw rod 12 is rotatably connected to the inner bottom of the shell 1. A slider 13 is threadedly connected to the reciprocating screw rod 12, and the left side of the slider 13 is fixedly connected to the electric heating ring 10.

[0036] As an embodiment of the present invention, the sludge stirring mechanism cooperates with the lifting mechanism to stir the sludge and improve the overall temperature uniformity. The sludge stirring mechanism includes a rotating shaft 8 rotatably connected between the upper and lower inner walls of the shell 1, and a plurality of stirring rods 9 are fixedly connected to the rotating shaft 8. The upper end of the rotating shaft 8 extends to the outside and is equipped with a gear 20. The upper end of the shell 1 is fixedly connected to a fixed plate 17, and a rectangular slide 19 is horizontally penetrated on the fixed plate 17. The rectangular slide 19 penetrates the fixed plate 17, and sliding connection, the left side of the rectangular slide 19 is fixedly connected with a rack 21, the rack 21 is engaged with the gear 20, the right side of the rectangular slide 19 is fixedly connected with a movable plate 16, the left side of the movable plate 16 is elastically connected to the right side of the fixed plate 17 through the first spring 18, the output shaft of the drive motor 6 is fixedly connected with a cam 15, the cam 15 and the movable plate 16 are abutted, and a guide rod 14 is fixedly connected between the upper and lower inner walls of the housing 1, the guide rod 14 passes through the slider 13, and is slidably connected to the slider 13;

[0037] As an embodiment of the present invention, it also includes a gas extraction mechanism, which can extract water vapor generated by evaporation and prevent the odor generated during sludge drying from affecting the surrounding area. The gas extraction mechanism includes a mounting seat 22 connected to the upper end of the shell 1, and a piston cylinder 4 is installed on the upper end of the mounting seat 22. A piston block 26 that can slide left and right is provided inside the piston cylinder 4. The left side of the rack 21 is fixedly connected to the piston block 26 by a connecting rod 23. The space of the piston cylinder 4 is connected by a first one-way tube 11 and a second one-way tube 25. One-way valves are installed inside the first one-way tube 11 and the second one-way tube 25. The one-way valve inside the second one-way tube 25 flows in a one-way direction from the top of the shell 1 into the piston cylinder 4. The one-way valve inside the first one-way tube 11 flows in a one-way direction from the piston cylinder 4 to the outside world. Furthermore, the other end of the first one-way tube 11 is connected to an external exhaust gas treatment device to achieve exhaust gas treatment.

[0038] As an embodiment of the present invention, the left side of the shell 1 is fixedly connected to the air intake cylinder 7, and the air intake cylinder 7 is connected to the interior of the shell 1 through a connecting port 24. A circular opening 28 is opened on the left side wall of the air intake cylinder 7, and a piston column 27 is horizontally penetrated on the circular opening 28. The piston column 27 is slidably connected to the circular opening 28. The right side of the piston column 27 is elastically connected to the right side wall of the air intake cylinder 7 through a second spring 30. The upper end of the piston column 27 is fixedly connected to an L-shaped rod 29. The horizontal part of the L-shaped rod 29 penetrates the air intake cylinder 7 and is slidably connected. With this structure, the interior of the shell 1 can always be in a low-pressure state. Under the low-pressure environment, the boiling point is reduced, which can promote the efficiency of actual evaporation.

[0039] In the present invention, the sludge to be dried is added to the interior of the housing 1 through the feed port 3. After completion, the feed port 3 is sealed to prevent gas leakage and external impurities from entering during the drying process. The electric heating ring 10 is started to heat the sludge, and the drive motor 6 is started at the same time, driving the reciprocating screw 12 to rotate. The slider 13 moves up and down on the reciprocating screw 12, thereby driving the electric heating ring 10 to rise and fall, achieving uniform heating of the sludge at different heights.

[0040] The output shaft of the drive motor 6 simultaneously rotates the cam 15, which abuts against the abutment plate 16, causing the abutment plate 16 to move the rectangular slide 19 left and right. The rack 21 is fixedly connected to the rectangular slide 19, so the rack 21 also moves left and right, and drives the rotating shaft 8 to rotate through the gear 20. The rotation here is forward and reverse. The stirring rod 9 on the rotating shaft 8 stirs the sludge, promoting sludge temperature uniformity.

[0041] The left and right movement of the rack 21 drives the piston block 26 in the piston cylinder 4 to slide left and right through the connecting rod 23. When the piston block 26 moves to the right, the exhaust gas at the top of the housing 1 enters the piston cylinder 4 through the one-way valve of the second one-way pipe 25; when the piston block 26 moves to the left, the exhaust gas in the piston cylinder 4 is discharged to the external exhaust gas treatment device through the one-way valve of the first one-way pipe 11, thereby achieving exhaust gas treatment and preventing odor from spreading.

[0042] The air inlet cylinder 7 is connected to the interior of the shell 1 through the communication port 24. When the air pressure in the shell 1 decreases, the piston rod 27 moves to the right. When the piston rod 27 moves to the right and the round port 28 is exposed, the shell 1 can be replenished with air through the air inlet cylinder 7. During the continuous process, the air pressure in the shell 1 is always kept at a low pressure state. Under the low pressure environment, the boiling point of the water in the sludge is reduced, the evaporation efficiency is improved, and the drying of the sludge is promoted.

[0043] After the drying operation is completed, the sludge is pumped to the subsequent process through the sludge pump 2.

[0044] The present invention also discloses a method for using a sludge brick-making dryer, which uses the dryer and comprises the following steps:

[0045] Step 1: Add the sludge to be dried into the housing 1 through the feeding port 3. After the addition is completed, the feeding port 3 is immediately sealed to prevent gas leakage and external impurities from entering during the drying process;

[0046] Step 2: Start the electric heating ring 10 to heat the sludge. At the same time, start the drive motor 6 to drive the reciprocating screw 12 to rotate. The slider 13 moves up and down on the reciprocating screw 12, thereby driving the electric heating ring 10 to rise and fall, thereby heating the sludge at different heights, ensuring that the sludge is heated evenly and improving the drying efficiency.

[0047] Step 3: The output shaft of the driving motor 6 drives the cam 15 to rotate at the same time. The cam 15 abuts against the abutting plate 16, so that the abutting plate 16 drives the rectangular slide 19 to move left and right. The rack 21 is fixedly connected to the rectangular slide 19, so the rack 21 also moves left and right, and drives the rotating shaft 8 to rotate forward and reverse through the gear 20. The stirring rod 9 on the rotating shaft 8 stirs the sludge to promote the uniformity of the sludge temperature;

[0048] Step 4: The left and right movement of the rack 21 drives the piston block 26 in the piston cylinder 4 to slide left and right through the connecting rod 23. When the piston block 26 moves to the right, the exhaust gas at the top of the housing 1 enters the piston cylinder 4 through the one-way valve of the second one-way pipe 25; when the piston block 26 moves to the left, the exhaust gas in the piston cylinder 4 is discharged through the one-way valve of the first one-way pipe 11.

[0049] Step 5: After the drying operation is completed, the sludge is pumped to the subsequent process through the sludge pump 2.

[0050] It should be noted that the terms "first", "second", etc. in the specification and claims of the present application and the above-mentioned drawings are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that the data used in this way can be interchangeable where appropriate, so that the embodiments of the present application described herein can, for example, be implemented in an order other than those illustrated or described herein. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions, for example, a process, method, system, product or device comprising a series of steps or units is not necessarily limited to those steps or units clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0051] The above description is only a preferred specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any technician familiar with the technical field, within the technical scope disclosed by the present invention, who makes equivalent replacements or changes based on the technical solution and inventive concept of the present invention, should be covered by the scope of protection of the present invention.

Claims

1. A sludge brick making dryer, characterized in that: include: A housing (1), wherein an electric heating ring (10) is provided inside the housing (1); A lifting mechanism, the lifting mechanism is used to lift the electric heating ring (10), the lifting mechanism includes a mounting frame (5) mounted on the upper end of the shell (1), a driving motor (6) is mounted on the mounting frame (5), the output shaft of the driving motor (6) extends into the interior of the shell (1) and is fixedly connected to a reciprocating screw rod (12), the lower end of the reciprocating screw rod (12) is rotatably connected to the inner bottom of the shell (1), a slider (13) is threadedly connected to the reciprocating screw rod (12), and the left side of the slider (13) is fixedly connected to the electric heating ring (10); The sludge stirring mechanism cooperates with the lifting mechanism to stir the sludge and improve the overall temperature uniformity; The gas extraction mechanism can extract the water vapor generated by evaporation, while preventing the odor generated during sludge drying from affecting the surroundings.

2. A sludge brick making dryer according to claim 1, characterized in that: A feeding port (3) is installed at the upper end of the shell (1), and a sludge pump (2) is installed at the shell (1), with the sludge inlet end of the sludge pump (2) extending to the inner bottom of the shell (1).

3. A sludge brick making dryer according to claim 2, characterized in that: The sludge stirring mechanism comprises a rotating shaft (8) rotatably connected between the upper and lower inner walls of the shell (1), a plurality of stirring rods (9) are fixedly connected to the rotating shaft (8), and the upper end of the rotating shaft (8) extends to the outside and is equipped with a gear (20).

4. A sludge brick making dryer according to claim 3, characterized in that: The upper end of the housing (1) is fixedly connected to a fixed plate (17), and a rectangular slide bar (19) is horizontally provided on the fixed plate (17). The rectangular slide bar (19) penetrates the fixed plate (17) and is slidably connected. The left side of the rectangular slide bar (19) is fixedly connected to a rack (21), and the rack (21) is engaged with a gear (20). The right side of the rectangular slide bar (19) is fixedly connected to a movable plate (16). The left side of the movable plate (16) is elastically connected to the right side of the fixed plate (17) through a first spring (18). The output shaft of the drive motor (6) is fixedly connected to a cam (15), and the cam (15) is against the movable plate (16).

5. The dryer for making sludge bricks according to claim 1, characterized in that: A guide rod (14) is fixedly connected between the upper and lower inner walls of the housing (1), and the guide rod (14) passes through the slider (13) and is slidably connected to the slider (13).

6. The dryer for making sludge bricks according to claim 4, characterized in that: The gas extraction mechanism comprises a mounting seat (22) connected to the upper end of the housing (1); a piston cylinder (4) is mounted on the upper end of the mounting seat (22); a piston block (26) capable of sliding leftward and rightward is arranged inside the piston cylinder (4); the left side of the rack (21) is fixedly connected to the piston block (26) via a connecting rod (23); the space of the piston cylinder (4) is connected to a first one-way tube (11) and a second one-way tube (25); and one-way valves are installed inside the first one-way tube (11) and the second one-way tube (25).

7. The dryer for making sludge bricks according to claim 6, characterized in that: The one-way valve inside the second one-way tube (25) flows in a one-way direction from the top of the housing (1) into the piston cylinder (4), and the one-way valve inside the first one-way tube (11) flows in a one-way direction from the piston cylinder (4) to the outside.

8. The dryer for making sludge bricks according to claim 7, characterized in that: The left side of the housing (1) is fixedly connected to an air intake cylinder (7), and the air intake cylinder (7) is communicated with the interior of the housing (1) through a communication port (24). A circular opening (28) is provided on the left side wall of the air intake cylinder (7), and a piston column (27) is horizontally passed through the circular opening (28). The piston column (27) is slidably connected to the circular opening (28). The right side of the piston column (27) is elastically connected to the right side wall of the air intake cylinder (7) through a second spring (30). The upper end of the piston column (27) is fixedly connected to an L-shaped rod (29), and the horizontal portion of the L-shaped rod (29) passes through the air intake cylinder (7) and is slidably connected.

9. A method for using a sludge brick-making dryer, using the dryer as described in claims 1-8, characterized in that: The following steps are involved: Step 1: Add the sludge to be dried into the housing (1) through the feeding port (3). After the addition is completed, the feeding port (3) is immediately sealed to prevent gas leakage and external impurities from entering during the drying process; Step 2: Start the electric heating ring (10) to heat the sludge. At the same time, start the driving motor (6) to drive the reciprocating screw (12) to rotate, and the slider (13) moves up and down on the reciprocating screw (12), thereby driving the electric heating ring (10) to rise and fall, so as to achieve heating of different heights of the sludge, ensure that the sludge is heated evenly, and improve the drying efficiency; Step 3: The output shaft of the driving motor (6) drives the cam (15) to rotate at the same time. The cam (15) abuts against the moving plate (16), so that the moving plate (16) drives the rectangular slide (19) to move left and right. The rack (21) is fixedly connected to the rectangular slide (19), so that the rack (21) also moves left and right, and drives the rotating shaft (8) to rotate forward and reverse through the gear (20). The stirring rod (9) on the rotating shaft (8) stirs the sludge to promote the uniformity of the sludge temperature. Step 4: The left and right movement of the rack (21) drives the piston block (26) in the piston cylinder (4) to slide left and right through the connecting rod (23). When the piston block (26) moves to the right, the exhaust gas at the top of the housing (1) enters the piston cylinder (4) through the one-way valve of the second one-way pipe (25); When the piston block (26) moves to the left, the exhaust gas in the piston cylinder (4) is discharged through the one-way valve of the first one-way pipe (11); Step 5: After the drying operation is completed, the sludge is pumped to the subsequent process through the sludge pump (2).

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