CN118729711A - A plate-copying rotary drum dryer and its use method - Google Patents

Abstract

The invention discloses a scooping plate type rotary drum dryer and a use method thereof, which specifically relates to the field of sludge treatment. The dryer comprises a drying structure 1, a drying structure 2 and a collision member. The bottom ends of the drying structure 1 and the drying structure 2 are provided with a base, the collision member penetrates the base and is fixed to the outer surface of the drying structure 1 and is connected through the base. The drying structure 1 is a double-layer structure, and a plurality of air outlet pipes are circumferentially connected to the outer surface of the drying structure 1. Circulated waste heat gas and hot air are used to impact a sieve plate and a guide plate, and fill the interlayer of the sieve plate and the guide plate to form a high-temperature zone. The sludge is dripped onto the guide plate in a dripping shape by the continuously vibrating sieve plate, so that the sludge is quickly hardened and dried, and the sludge is prevented from adhering to the drum wall or the pipeline and being difficult to clean. At the same time, the sludge is divided into a plurality of granular sludges, and the contact area between the sludge and the hot air is increased, thereby greatly improving the drying efficiency of the sludge.

Description

A plate-copying rotary drum dryer and its use method

Technical Field

The present invention relates to the technical field of sludge treatment, and more specifically, to a shaving plate type rotary drum dryer and a method for using the same.

Background Art

In the process of sewage treatment, sludge treatment has always been a concern of people in the industry. The activated sludge method is currently used by 90% of the world's sewage treatment plants. This method produces a large amount of sludge. The sludge with high yield and high water content is not only inconvenient to store, transport, load and unload, but also has high potential environmental safety risks and hidden dangers. Therefore, sludge drying treatment is imperative.

The drum dryer, also known as a rotary drum dryer or a rotary dryer, is a contact type internal heating conduction type drying machine. During the drying process, the heat is transferred from the inner wall of the drum to its outer wall, passing through the material to be dried attached to the outer wall of the drum, and evaporating the moisture on the material. It is a continuous drying production machine. The sludge with a certain water content is turned by the drum during drying.

The Chinese patent with the publication number CN116177842A discloses a sludge rotary drum dryer, in which wet sludge is fed from the higher end of the rotating sleeve, and the hot air output by the hot air blower enters from the air inlet, and the rotating drive member drives the rotating sleeve to rotate. As the rotating sleeve rotates, the wet sludge flows to the lower end under the action of gravity, so that the gas and solid are in countercurrent contact in the rotating sleeve, and the hot air heats and dehumidifies the wet sludge, and the sludge is finally discharged from the discharge port. Before processing a batch of wet sludge, the inclination angle of the mounting seat is first adjusted according to the humidity of the wet sludge, thereby adjusting the inclination angle of the rotating sleeve, so that different heating and drying times can be set for sludges of different humidity, thereby avoiding the situation that the sludge is not completely dried or the sludge drying time is too long, resulting in energy waste; at the same time, when the sludge is blocked, the inclination angle of the rotating sleeve can be adjusted to the maximum, so that the blocked sludge can fall quickly, and there is no need to stop the machine for processing, thereby improving work efficiency.

When using a rotary drum dryer with a lifting plate to dry sludge, it is difficult to lift the sludge by the lifting plate and then sprinkle it down due to the high viscosity of the wet sludge. In most cases, the sludge rotates with the rotation of the rotary drum and is prone to form large lumps. The existing rotary drum dryer is not well suited for drying sludge. The sludge clumps severely, causing blockages, affecting continuous production, and having low efficiency.

To this end, the present invention provides a plate-lifting type rotary drum dryer and a method of using the same to solve the above-mentioned problems.

Summary of the invention

In order to overcome the above-mentioned defects of the prior art, the present invention provides a shovel-type rotary drum dryer, which overcomes the difficulty of sludge drying in the prior art and provides a shovel-type rotary drum dryer that can quickly dry the sludge, avoid agglomeration, and realize continuous production.

To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a shovel-type rotary drum dryer, comprising a drying structure 1, a drying structure 2 and a collision member, the bottom ends of the drying structure 1 and the drying structure 2 are provided with a base, the collision member penetrates the base and is fixed to the outer surface of the drying structure 1, and is connected through the base, the drying structure 1 is a double-layer structure, and a plurality of air outlet pipes are circumferentially connected to the outer surface of the drying structure 1, the plurality of air outlet pipes penetrate the base, support and connect the drying structure 2, the plurality of air outlet pipes introduce the hot air in the drying structure 1 into the drying structure 2 to preliminarily dry the wet sludge, the surface of the drying structure 1 is provided with a feed pipe and a discharge pipe, the pipe openings of the feed pipe and the discharge pipe are both provided with valves, and the valves intermittently seal the feed pipe and the discharge pipe;

The second drying structure is provided with a sieve plate and a guide plate, and the hot air is introduced into the interlayer between the sieve plate and the guide plate to form a high temperature zone. The sieve plate drips the wet sludge onto the guide plate, and the wet sludge is dried and hardened by the introduced hot air.

Preferably, the base comprises a left rotating seat, a barrel tail rotating seat, a barrel head rotating seat and a right rotating seat, a left clamping plate is fixed to the top of the left rotating seat, and a right clamping box is fixed to the top of the right rotating seat;

Wherein, a group of telescopic parts are fixed on the left rotating seat, the barrel tail rotating seat, the barrel head rotating seat and the right rotating seat.

Preferably, the base is installed with a set of driving mechanisms, the driving mechanisms include connecting rods, circular gears and driving components, and the driving components are meshed with the circular gears.

Preferably, the drying structure 1 includes an air inlet pipe, an outer drum and an inner drum, the air inlet end of the air inlet pipe is connected to an induced draft fan, and the air inlet pipe is used to fix the outer drum and the inner drum, and the air inlet pipe passes through the outer drum and is connected to the inner cavity of the inner drum;

A shoveling plate is welded to the inner wall of the inner drum, a plurality of guide ports are passed through the tail of the inner drum, no shoveling plate is arranged on the horizontal line where the discharge pipe is located, two groups of rotating parts and a plurality of collision beads are symmetrically fixed on the outer surface of the outer drum, and each group of the rotating parts includes a sleeve plate and a sleeve gear.

Preferably, the drying structure 2 includes an insulation shell box, a hot air duct, a longitudinal duct and a feed hopper, one end of the hot air duct is connected to the bottom end of the feed hopper, and the other end is connected to the feed duct, the insulation shell box is wrapped around the outer surface of the feed hopper, the longitudinal duct supports and connects to the insulation shell box, and the other end of the longitudinal duct is welded to the upper part of the support box and connected thereto.

Preferably, two groups of baffles are welded to the inner wall of the feed hopper, the sieve plate and the guide plate are pressed on the two baffles, ventilation slots for hot air to pass through are opened on the sides of the sieve plate, and a plurality of sieve holes are opened in the center of the sieve plate.

Preferably, an opening is provided on a side of the guide plate, and a plurality of vortex cylinders are provided on a surface of the guide plate, and the plurality of vortex cylinders are distributed in an alternating manner with the sieve holes.

Preferably, the heat-insulating shell box comprises an external heating box and a baffle, the baffle is inserted into the external heating box, and a group of impact ball columns are fixed on the outer surface of the external heating box.

Preferably, a connecting piece is welded between the right clamping box and the drying structure one, and the collision piece operates synchronously with the drying structure one through the connecting piece. The collision piece includes a T-shaped vibration plate, a collision column ball one and a collision column ball two which are integrally connected. The longitudinal pipe is located on the running track of the collision column ball one, and the collision ball column is located on the running track of the collision column ball two.

A method for using a plate-type rotary drum dryer, the steps of which are as follows:

S1: The wet sludge from which excess water is removed is delivered to the feed hopper by a bucket elevator, the driving mechanism and the induced draft fan are turned on, the induced draft fan introduces hot air into the inner drum, the hot air is introduced into the drying structure 2 by the air outlet pipe, the drying structure 1 is driven by the driving mechanism to rotate and vibrate at the same time, and the collision member moves synchronously with the drying structure 1 to collide with the drying structure 2;

S2: The vibrating sieve plate causes the sludge to continuously drip onto the guide plate. The sludge on the guide plate is dried and hardened at high temperature to form granules. The granular sludge enters the vortex cylinder and falls onto the valve of the feed pipe. The valve is opened, and the drive mechanism and the induced draft fan are closed.

S3: Granular sludge enters the inner drum, the valve is closed, the driving mechanism and the induced draft fan are turned on, the driving mechanism drives the drying structure to rotate, and the lifting plate on the surface of the inner drum continuously lifts up the sludge and puts it down, and the sludge moves forward to the material pipeline under the driving force of gravity;

S4: the valve of the discharge pipe is opened, the driving mechanism and the induced draft fan are closed, the discharge pipe discharges the granular sludge, and the feed pipe introduces the next batch of granular sludge, and the above steps are repeated until the sludge is completely dried.

Technical effects and advantages of the present invention:

1. The drying structure 1 is set to be a double-layer structure, and multiple air outlet pipes are connected in the circumferential direction on the outer surface of the drying structure 1. The fluidity of the hot air is used to fill the inside of the rotary drum, the interlayer between the inner drum and the outer drum, and the air outlet pipe to avoid heat loss. When the hot air is not introduced into the inner drum, it is still in a high-temperature drying state, saving energy. At the same time, the hot air is introduced into the drying structure 2 by utilizing the fluidity of the hot air to realize the recycling of the hot air;

2. Granular sludge is introduced into the rotary drum from the feed pipe, and the intermittent valve is used to open and close the pipe openings of the feed pipe and the discharge pipe, so that the granular sludge enters the inner cavity of the inner drum in batches and intermittently, so that the inner drum shell is filled with granular sludge, the utilization rate of the inner wall of the rotary drum is increased, the effective contact area between the heat flow and the sludge is increased, and the drying time of the sludge is reduced;

3. Utilize the circulating waste heat to impact the sieve plate and guide plate, and fill the interlayer of the sieve plate and guide plate to form a high-temperature zone. Utilize the continuously vibrating sieve plate to drip the sludge onto the guide plate, so that it can harden and dry quickly, and avoid the sludge sticking to the cylinder wall or pipe, which is difficult to clean. At the same time, the sludge is separated into several granular sludges, which increases the contact area between the sludge and the hot air, and greatly improves the drying efficiency of the sludge.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG1 is a schematic diagram of the overall structure of a plate-type rotary drum dryer;

FIG2 is a cross-sectional view of the overall structure of a plate-type rotary drum dryer;

FIG3 is an enlarged structural view of section A of FIG2 of the present invention;

FIG4 is a schematic diagram of the overall structure of the drying structure 2 of the present invention;

FIG5 is a partial structural schematic diagram of a drying structure 2 of the present invention;

FIG6 is a detailed view of the overall structure of the base of the present invention;

FIG7 is an enlarged structural view of part B of FIG6 of the present invention;

FIG8 is a cross-sectional view of a drying structure of the present invention.

The accompanying drawings are marked as follows: 1. Drying structure 1; 11. Feeding pipe; 111. Valve; 12. Outer drum; 13. Inner drum; 131. Copying plate; 132. Guide port; 14. Sleeve plate; 15. Sleeve gear; 16. Impact ball; 17. Discharge pipe; 18. Air outlet pipe; 19. Air inlet pipe; 2. Base; 21. Left swivel seat; 22. Cylinder tail swivel seat; 23. Cylinder head swivel seat; 231. Support plate; 232. Round rod; 233. Rotating wheel; 24. Right swivel seat; 25. Left clamping plate; 26. Telescopic rod; 27. Spring; 28. Right clamping box; 281. Left cover; 282. Right box; 283. Support box ; 3. Collision member; 31. T-type vibration plate; 32. Collision column ball one; 33. Collision column ball two; 4. Drying structure two; 41. Insulation shell box; 411. External heating box; 412. Baffle plate; 42. Screening plate; 421. Ventilation slot; 422. Screening hole; 423. Notch; 43. Guide plate; 431. Vortex cylinder; 44. Hot air duct; 45. Impact ball column; 46. Longitudinal duct; 47. Feed hopper; 471. Baffle bar; 5. Connector; 51. Connecting straight rod; 52. Insert plate; 53. Card plate; 6. Driving mechanism; 61. Connecting rod; 62. Circular gear; 63. Driving assembly; 7. Draft fan.

DETAILED DESCRIPTION

The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

Embodiment 1:

Referring to the attached drawings 1 to 8 of the specification:

A shaving plate type rotary drum dryer comprises a drying structure 1, a drying structure 2 4 and a collision member 3. A base 2 is provided at the bottom ends of the drying structure 1 and the drying structure 2 4. The collision member 3 penetrates the base 2 and is fixed to the outer surface of the drying structure 1 and is connected through the base 2. The drying structure 1 is a double-layer structure, and multiple air outlet pipes 18 are connected in a circumferential direction on the outer surface of the drying structure 1. The multiple air outlet pipes 18 penetrate the base 2, support and connect the drying structure 2 4. The multiple air outlet pipes 18 introduce hot air in the drying structure 1 into the drying structure 2 4 to preliminarily dry the wet sludge. A sieve plate 42 and a guide plate 43 are provided in the drying structure 2 4. The hot air is introduced into the interlayer of the sieve plate 42 and the guide plate 43 to form a high temperature zone. The sieve plate 42 drips the wet sludge onto the guide plate 43, and the wet sludge is dried and hardened by the introduced hot air.

A feed pipe 11 and a discharge pipe 17 are provided on the surface of the drying structure 1 , and valves 111 are provided at the pipe openings of the feed pipe 11 and the discharge pipe 17 , and the valves 111 seal the feed pipe 11 and the discharge pipe 17 intermittently.

Specifically, as shown in FIG6 , the base 2 includes a left swivel seat 21, a barrel tail swivel seat 22, a barrel head swivel seat 23 and a right swivel seat 24. A left clamping plate 25 is fixed to the top of the left swivel seat 21. A right clamping box 28 is fixed to the top of the right swivel seat 24. The right clamping box 28 includes a left cover 281, a right box 282 and a support box 283. The right clamping box 28 is a split structure, which is convenient for regular cleaning in the later stage. The left cover 281 and the right box 282 are buckled and connected. The support box 283 is fixed to the right box 282. A plurality of air outlet pipes 18 are fixed to the left cover 281. The left cover 281, the right box 282 and the support box 283 are connected to each other.

Among them, the left rotating seat 21, the tail rotating seat 22, the head rotating seat 23 and the right rotating seat 24 are fixed with a group of telescopic parts, and the telescopic parts include a group of telescopic rods 26 and multiple springs 27. The left rotating seat 21, the tail rotating seat 22, the head rotating seat 23 and the right rotating seat 24 are fixedly connected by the telescopic rods 26 and the multiple springs 27. The force of the multiple springs 27 makes the left rotating seat 21, the tail rotating seat 22, the head rotating seat 23 and the right rotating seat 24 tend to move together, and this force makes the left cover 281 and the right box 282 tightly buckled.

Specifically, the structure of the barrel head rotating seat 23 and the barrel tail rotating seat 22 is consistent. The barrel head rotating seat 23 includes a support plate 231, a round rod 232 and a rotating wheel 233. There are multiple round rods 232 and they are horizontally inserted in the support plate 231. The rotating wheel 233 rotates on the surface of the round rods 232.

Specifically, as shown in Figures 6 and 7, the base 2 is located between the barrel tail rotating seat 22 and the barrel head rotating seat 23 and is inserted with a group of driving mechanisms 6. The driving mechanism 6 includes a connecting rod 61 that rotates horizontally between the barrel tail rotating seat 22 and the barrel head rotating seat 23, a circular gear 62 fixed at both ends of the connecting rod 61, and a driving component 63 fixed on the barrel head rotating seat 23. The driving component 63 is meshed with the circular gear 62. The driving component 63 includes a group of motors fixed to the surface of the barrel head rotating seat 23 and a cylindrical gear located at the end of the motor output shaft. The cylindrical gear is meshed with the circular gear 62. A control unit is also provided on the surface of the motor. The control unit controls the number of rotations and start and stop of the cylindrical gear, and synchronously starts and stops the induced draft fan 7 to avoid excessive use of energy, and controls the valve 111 according to the start and stop of the motor to achieve intermittent connection or blocking of the feed pipe 11 and the discharge pipe 17.

Specifically, as shown in FIGS. 2 to 8 , the drying structure 1 includes an air inlet pipe 19, an outer drum 12 and an inner drum 13. The air inlet end of the air inlet pipe 19 is connected to the induced draft fan 7, and the air inlet pipe is used to fix the outer drum 12 and the inner drum 13. The air inlet pipe 19 passes through the outer drum 12 and communicates with the inner cavity of the inner drum 13.

Specifically, a shoveling plate 131 is welded to the inner wall of the inner drum 13, and a plurality of guide ports 132 are penetrated at the tail of the inner drum 13. The plurality of guide ports 132 introduce hot air from the inner drum 13 into the interlayer between the inner drum 13 and the outer drum 12, acting as a heat-insulating layer to ensure the high temperature of the inner cavity of the inner drum 13. At the same time, the hot air is introduced into the air outlet pipe 18, and the plurality of air outlet pipes 18 are wrapped around the outer peripheral surface of the outer drum 12, acting as a second heat-insulating layer, so that when the introduction of hot air into the inner drum 13 is suspended, the temperature remains unchanged. No shoveling plate 131 is provided on the horizontal line where the discharge pipe 17 is located. Two groups of rotating parts and a plurality of collision beads 16 are symmetrically fixed on the outer surface of the outer drum 12, and each group of rotating parts includes a sleeve plate 14 and a sleeve gear 15. The two sleeve plates 14 are pressed on the rotating wheel 233, and the rotating wheel 233 rotates to transmit the drying structure 1 to rotate.

During operation, the granular sludge enters the rotary drum 13 from the feed pipe 11, and the outer drum 12 and the inner drum 13 face the discharge pipe 17, so that the dried sludge is discharged through the discharge pipe 17, wherein the induced draft fan 7 introduces hot air, so that the hot air counter-flows and contacts the heating wall surface and the sludge, and the sludge is effectively contacted and dried, wherein, by means of the slow rotation of the outer drum 12 and the inner drum 13, the sludge moves from the feed pipe 11 to the discharge pipe 17 under the action of gravity;

A lifting board 131 is installed on the inner wall of the inner drum 13, and the lifting board 131 continuously lifts up the sludge and puts it down to dry, so that the contact area between the sludge and the drying medium is greatly increased, the drying rate is improved and the sludge is moved forward;

The drying structure 1 of the device is a double-layer structure, and multiple air outlet pipes 18 are connected to the outer surface of the drying structure 1 in a circumferential direction. The hot air is filled into the interior of the rotary drum 13, the interlayer between the inner drum 13 and the outer drum 12, and the air outlet pipes 18 by utilizing the fluidity of the hot air, so that the temperature inside the inner drum 13 is always at a high temperature.

Secondly, the granular sludge enters the rotary drum 13 from the feed pipe 11, and the pipe openings of the feed pipe 11 and the discharge pipe 17 are opened and closed by the intermittent valve 111, so that the granular sludge enters the inner cavity of the inner drum 13 in batches intermittently, so that the granular sludge is distributed throughout the shell of the inner drum 13, increasing the effective contact area between the heat flow and the sludge and improving the drying area of the sludge.

Embodiment 2:

Referring to Figure 2 of the specification:

Specifically, the drying structure 2 4 includes an insulation shell box 41, a hot air duct 44, a longitudinal duct 46 and a feed hopper 47. One end of the hot air duct 44 is connected to the bottom end of the feed hopper 47, and the other end is connected to the feed pipe 11. The insulation shell box 41 is wrapped around the outer surface of the feed hopper 47, and the longitudinal duct 46 supports and connects to the insulation shell box 41. The other end of the longitudinal duct 46 is welded to the support box 283 and connected thereto. The sludge enters the lower cavity of the feed hopper 47 through the sieve plate 42 and the guide plate 43, and enters the feed pipe 11 through the hot air duct 44 connected to the lower end of the feed hopper 47, and then enters the inner drum 13. The hot air enters the right clamping box 28 through the air outlet pipe 18, and enters the insulation shell box 41 through the longitudinal duct 46, and is guided from the insulation shell box 41 to the feed hopper 47, thereby realizing the recycling of the hot air.

Specifically, as shown in Figure 5, two groups of baffles 471 are welded to the inner wall of the feed hopper 47, the sieve plate 42 and the guide plate 43 are pressed on the two baffles 471, the baffle 471 at the lower end is larger than the baffle 471 at the upper end, and the side of the sieve plate 42 is provided with ventilation grooves 421 and notches 423 for hot air to pass through, and a plurality of sieve holes 422 are provided in the center of the sieve plate 42. The sieve holes 422 drip the sludge onto the guide plate 43, and the notches 423 facilitate the sieve plate 42 to be engaged with the baffle 471.

Specifically, an opening is provided on the side of the guide plate 43, and the opening is convenient for the guide plate 43 to pass through the upper end stop bar 471 and be engaged with the lower end stop bar 471. The two stop bars 471 stabilize the sieve plate 42 and the guide plate 43 by engaging. At the same time, the detachable installation method is convenient for taking out and cleaning the sieve plate 42 and the guide plate 43 from the feed port 47. A plurality of vortex cylinders 432 are provided on the surface of the guide plate 43, and the plurality of vortex cylinders 432 are staggered with the sieve holes 422. The hot air impacts the sieve plate 42 and the guide plate 43, and is retained by the interlayer of the sieve plate 42 and the guide plate 43 to form a high temperature zone. The water on the surface of the sludge is evaporated quickly to realize the initial evaporation function. The water drips from the sieve plate 42 to the surface of the guide plate 43 under the action of gravity to form small particles. The granular sludge is quickly evaporated and hardened into small particles on the guide plate 43. The collision part 3 hits the drying structure 4 to cause vibration. The vibrating guide plate 43 causes the hardened granular sludge to fall into the hot air duct 44 through the vortex cylinder 432. The hardened granular sludge not only has a small area, but is also easy to be quickly evaporated and hardened. At the same time, it is difficult to adhere to the cylinder wall and the pipeline. It is in contact with the hot air during the continuous collision and movement process, and finally achieves the drying effect;

The device divides the sludge into a plurality of small sludge particles, and puts them into the inner drum 13 in batches for drying, which increases the contact area between the sludge and the hot air exponentially, greatly improving the utilization rate of the hot air and the drying efficiency;

Specifically, the insulation shell box 41 includes an external heating box 411 wrapped around the outer peripheral surface of the feed hopper 47 and a baffle 412 for changing the flow direction of hot air. The baffle 412 is inserted into the external heating box 411, and a group of impact ball columns 45 are fixed on the outer surface of the external heating box 411.

Embodiment three:

Refer to Figures 2-3 of the specification;

A connecting piece 5 is welded between the right clamping box 28 and the drying structure 1, and the connecting piece 5 includes a connecting straight rod 51 fixed to the end of the outer drum 12, a plug plate 52 connected to the connecting straight rod 51, and a clamping plate 53 fixed to the end face of the right clamping box 28. The collision member 3 operates synchronously with the drying structure 1 through the connecting piece 5. The collision member 3 includes a T-shaped vibration plate 31, a collision column ball 1 32 and a collision column ball 2 33 which are integrally connected. The longitudinal pipe 46 is located on the running track of the collision column ball 1 32, and the collision ball column 45 is located on the running track of the collision column ball 2 33.

During operation, when the drying structure 1 rotates, the collision beads 16 on the surface of the outer drum 12 continuously hit the air outlet pipe 18 to prevent the inner wall of the air outlet pipe 18 from being adhered to the sludge. At the same time, the air outlet pipe 18 drives the outer drum 12 and the inner drum 13 to rotate synchronously. The continuously vibrating inner drum 13 causes the sludge adhered to the shoveling plate 131 or the inner wall of the inner drum 13 to fall down and be continuously picked up and rolled down by the shoveling plate 131.

Secondly, the collision column ball 33 hits the collision ball column 45, causing the insulation shell box 41, the feed hopper 47, the sieve plate 42 and the guide plate 43 to be in a continuous vibration process. The sludge on the vibrating sieve plate 42 is driven by gravity to drip onto the surface of the guide plate 43. The vibrating guide plate 43 allows the hardened granular sludge to separate from the guide plate 43 and enter the vortex cylinder 431 for discharge. At the same time, the non-vibrating sieve plate 42 is difficult to drip out of the sieve hole 422 due to its excessive viscosity, thereby separating the batches of sludge and realizing the batch drying, batch hardening and batch discharge of the granulated sludge.

A method for using a plate-type rotary drum dryer, the steps of which are as follows:

S1: The wet sludge with excess water removed is sent to the feed hopper through the bucket elevator, the driving mechanism and the induced draft fan are turned on, the induced draft fan introduces hot air into the inner drum, and the hot air is driven out of the air duct and introduced into the drying structure 2. The drying structure 1 is driven by the driving mechanism to rotate and vibrate at the same time, and the collision part moves synchronously with the drying structure 1 and hits the drying structure 2;

S2: The vibrating sieve plate causes the sludge to drip onto the guide plate continuously. The sludge on the guide plate is dried and hardened by high temperature to form particles. The granular sludge enters the vortex cylinder and falls on the valve of the feed pipe. The valve opens, and the drive mechanism and induced draft fan are closed.

S3: Granular sludge enters the inner drum, the valve is closed, the driving mechanism and the induced draft fan are turned on, the driving mechanism drives the drying structure to rotate, and the lifting plate on the surface of the inner drum continuously lifts up and dries the sludge, and the sludge moves forward to the material pipeline under the drive of gravity;

S4: The valve of the discharge pipe is opened, the driving mechanism and the induced draft fan are closed, the discharge pipe discharges the granular sludge, and the feed pipe imports the next batch of granular sludge. The above steps are repeated until all the sludge is dried.

Finally, a few points should be explained: First, in the description of this application, it should be noted that, unless otherwise specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, which may refer to mechanical connection or electrical connection, or internal communication between two components, or direct connection. "upper", "lower", "left", "right", etc. are only used to indicate relative positional relationships. When the absolute position of the object being described changes, the relative positional relationship may change;

Secondly: In the drawings of the embodiments disclosed in the present invention, only the structures related to the embodiments disclosed in the present invention are involved, and other structures can refer to the general design. In the absence of conflict, the same embodiment and different embodiments of the present invention can be combined with each other;

Finally: The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims (10)

1. The utility model provides a shoveling plate formula gyration cylinder desiccator, includes drying structure one (1), drying structure two (4) and impingement piece (3), its characterized in that: the bottom ends of the first drying structure (1) and the second drying structure (4) are provided with bases (2), and the collision piece (3) penetrates through the bases (2) to be fixed on the outer surface of the first drying structure (1) and is communicated with the base (2);

the drying structure I (1) is of a double-layer structure, a plurality of air outlet pipes (18) are circumferentially communicated with the outer surface of the drying structure I (1), the air outlet pipes (18) penetrate through the base (2) and support and communicate with the drying structure II (4), the air outlet pipes (18) are used for introducing hot air in the drying structure I (1) into the drying structure II (4) to primarily dry wet sludge, a feeding pipeline (11) and a discharging pipeline (17) are arranged on the surface of the drying structure I (1), valves (111) are arranged at pipeline openings of the feeding pipeline (11) and the discharging pipeline (17), and the valves (111) are used for intermittently sealing the feeding pipeline (11) and the discharging pipeline (17);

And a screening plate (42) and a guide plate (43) are arranged in the second drying structure (4), hot air is led into an interlayer of the screening plate (42) and the guide plate (43) and forms a high-temperature area, and wet sludge is dripped on the guide plate (43) by the screening plate (42).

2. A handsheet-type rotary drum dryer according to claim 1, wherein: the base (2) comprises a left rotary seat (21), a barrel tail rotary seat (22), a barrel head rotary seat (23) and a right rotary seat (24), wherein a left clamping plate (25) is fixed at the top end of the left rotary seat (21), and a right clamping box (28) is fixed at the top end of the right rotary seat (24);

Wherein, a group of telescopic parts are fixed on the left rotary seat (21), the barrel tail rotary seat (22), the barrel head rotary seat (23) and the right rotary seat (24).

3. A handsheet-type rotary drum dryer according to claim 2, wherein: a group of driving mechanisms (6) are inserted into the base (2), each driving mechanism (6) comprises a connecting rod (61), a circular gear (62) and a driving assembly (63), and each driving assembly (63) is meshed with each circular gear (62).

4. A handsheet-type rotary drum dryer according to claim 3, wherein: the drying structure I (1) comprises an air inlet pipe (19), an outer roller (12) and an inner roller (13), wherein an induced draft fan (7) is in butt joint with the air inlet end of the air inlet pipe (19), the air inlet pipe (19) is used for fixing the outer roller (12) and the inner roller (13), and the air inlet pipe (19) penetrates through the outer roller (12) and is communicated with the inner cavity of the inner roller (13);

The inner wall welding of interior cylinder (13) has shoveling plate (131), and the afterbody of interior cylinder (13) runs through a plurality of water conservancy diversion mouth (132), be equipped with on the horizontal line that ejection of compact pipeline (17) are located shoveling plate (131), the outward appearance of outer cylinder (12) is the symmetry and is fixed with two sets of rotating members and many hits pearl (16), and every group the rotating member includes cover board (14) and cover gear (15).

5. A handsheet-type rotary drum dryer according to claim 4, wherein: the drying structure II (4) comprises a heat insulation shell box (41), a hot air pipeline (44), a longitudinal pipeline (46) and a feed hopper (47), wherein one end of the hot air pipeline (44) is communicated with the bottom end of the feed hopper (47), the other end of the hot air pipeline is in butt joint with the feed pipeline (11), the heat insulation shell box (41) is wrapped on the outer surface of the feed hopper (47), the longitudinal pipeline (46) supports and is communicated with the heat insulation shell box (41), and the other end of the longitudinal pipeline (46) is welded on the upper portion of the support box (283) and is communicated with the support box.

6. A handsheet-type rotary drum dryer according to claim 5, wherein: the inner wall welding of feeder hopper (47) has two sets of shelves strips (471), sieving board (42) and deflector (43) are pressed on two shelves strips (471), ventilation groove (421) that supply hot-blast pass are seted up to the avris of sieving board (42), a plurality of sieve meshes (422) have been seted up at the center of sieving board (42).

7. A handsheet-type rotary drum dryer according to claim 6, wherein: the side of deflector (43) is equipped with the opening, the surface of deflector (43) is equipped with a plurality of vortex section of thick bamboo (432), a plurality of vortex section of thick bamboo (432) are crisscross distribution with sieving hole (422).

8. A handsheet-type rotary drum dryer according to claim 7, wherein: the heat preservation shell box (41) comprises an outer heating box (411) and a baffle plate (412), wherein the baffle plate (412) is inserted into the outer heating box (411), and a group of impact ball columns (45) are fixed on the outer surface of the outer heating box (411).

9. A handsheet-type rotary drum dryer according to claim 8, wherein: the right clamping box (28) and the first drying structure (1) are welded with a connecting piece (5), the collision piece (3) and the first drying structure (1) synchronously run through the connecting piece (5), the collision piece (3) comprises a T-shaped vibrating plate (31), a first collision post ball (32) and a second collision post ball (33) which are integrally connected, the longitudinal pipeline (46) is positioned on the running track of the first collision post ball (32), and the collision post ball (45) is positioned on the running track of the second collision post ball (33).

10. A method of using a handsheet-type rotary drum dryer based on a handsheet-type rotary drum dryer according to any of claims 1-9, comprising the steps of:

S1: the wet sludge with the excessive water removed is sent into the feed hopper (47) through a bucket elevator, the driving mechanism (6) and the induced draft fan (7) are started, the induced draft fan (7) introduces hot air into the inner roller (13), the hot air is introduced into the drying structure II (4) through the air outlet pipe (18), the drying structure I (1) is driven to rotate and vibrate simultaneously by the driving mechanism (6), and the collision piece (3) moves synchronously with the drying structure I (1) to strike the drying structure II (4);

S2: the vibrating sieving plate (42) causes the sludge to continuously drip on the guide plate (43), the sludge on the guide plate (43) is dried and hardened at high temperature to form particles, the granular sludge enters the vortex cylinder (431) and falls on the valve (111) of the feeding pipeline (11), the valve (111) is opened, and the driving mechanism (6) and the induced draft fan (7) are closed;

S3: granular sludge enters the inner roller (13), the valve (111) is closed, the driving mechanism (6) and the induced draft fan (7) are opened, the driving mechanism (6) drives the drying structure I (1) to rotate, the shoveling plate (131) on the surface of the inner roller (13) continuously shovels and shines the sludge, and the sludge moves forward to the material pipeline (17) under the driving of gravity;

s4: the valve (111) of the discharging pipeline (17) is opened, the driving mechanism (6) and the induced draft fan (7) are closed, granular sludge is led out of the discharging pipeline (17), the granular sludge of the next batch is led in by the feeding pipeline (11), and the steps are repeated until the sludge is completely dried.