CN214781444U - Sludge crushing and drying device - Google Patents

Abstract

The utility model discloses a broken mummification device of mud, the test platform comprises a support, be provided with the mummification rotary drum on the frame, mummification rotary drum one end is provided with the material import, material import top is provided with the hot cigarette air inlet, be provided with interior pivot in the mummification rotary drum, radially be provided with the stirring push rod in the interior pivot, the stirring push rod includes connecting portion and broken portion along length direction in proper order, connecting portion are connected with the adversion axle, the cross section of broken portion is semi-circular. Divide into connecting portion and broken portion through stirring the pushing ram, utilize semi-circular structure's broken portion to guarantee that the material moves to the export direction as far as, reduce the probability that the material splashes to the import direction, effectively promote the treatment effect of mud broken mummification device, promote mummification efficiency, extension equipment life.

Description

Sludge crushing and drying device

Technical Field

The utility model belongs to the technical field of sludge treatment technique and specifically relates to a broken mummification device of mud is related to.

Background

With the large-scale construction of modern sewage treatment plants, the sludge yield is growing dramatically. The water content of the sludge is high (generally 98%), the water content is still more than 80% after dehydration, and the sludge is not easy to treat, and if the sludge is not properly treated and disposed, secondary pollution to the surrounding environment of a stacking area is caused. The rational treatment of sludge is a necessary requirement for maintaining the beautiful environment around us and protecting the health of us. Anaerobic digestion, high-temperature composting, incineration and landfill are the most common methods for sludge treatment and disposal, but the sludge with high water content is directly used for composting and landfill and is easy to cause new environmental pollution, and the sludge incineration treatment needs to be firstly dehydrated and dried or added with combustion auxiliary materials. Therefore, various sludge treatment methods generally require drying sludge in advance to reduce the water content of the sludge.

The traditional process for reducing the water content of the sludge is to carry out drying treatment on the sludge by adopting drying equipment at the high temperature of 200-700 ℃, and primary energy sources such as coal, oil, natural gas and the like are required to be consumed; in the drying process of the sludge, along with the reduction of the water content of the sludge, when the water content is reduced to about 60 percent, the sludge is in a cementation stage, and is easy to agglomerate, so that particles which are hard in surface, difficult to crush and still have thin mud inside are formed, and the water is difficult to remove; meanwhile, the sludge in the cementation stage is easy to adhere to the equipment, so that the drying efficiency is reduced, and the service life of the equipment is shortened; the problem of caking is a problem which has to be considered in the sludge drying process.

For example, a sludge crushing type drying device disclosed in chinese patent document, whose publication number "CN 105084707B" includes a horizontal drying main cylinder, a frame for positioning the drying main cylinder, and a rotor spindle, one end of the drying main cylinder is provided with a feeding end, the other end is provided with a discharging end, the drying main cylinder can rotate relative to the feeding end and the discharging end, the top of the feeding end is provided with a hot smoke inlet, the top of the discharging end is provided with a wet smoke outlet, the rotor spindle is located inside the drying main cylinder, the frame is provided with a bearing seat for positioning the rotor spindle, the frame is provided with a spindle driving motor capable of driving the rotor spindle to rotate and a main cylinder driving motor capable of driving the drying main cylinder to rotate, the rotation directions of the rotor spindle and the drying main cylinder are opposite, and the rotor spindle is provided with a plurality of stirring push rods. The device carries out sludge crushing through the cooperation of the rotor main shaft and the drying main barrel, but the device still can not obtain better treatment effect aiming at the problems of low drying efficiency and easy sludge caking commonly existing in the sludge drying process.

Disclosure of Invention

When the moisture content reduces to about 60% among the prior art when the broken in-process of mud, mud can be in the cemented stage, takes place the problem of caking very easily, the utility model provides a broken mummification device of mud through being divided into connecting portion and broken portion with stirring the impulse mast, utilizes semi-circular structure's broken portion to guarantee that the material moves to the export direction as far as, reduces the probability that the material splashes to the import direction, effectively promotes broken mummification device's treatment effect, promotes mummification efficiency, extension equipment life.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

the utility model provides a broken mummification device of mud, includes the frame, be provided with the mummification rotary drum on the frame, mummification rotary drum one end is provided with the material import, material import top is provided with the hot cigarette air inlet, be provided with interior pivot in the mummification rotary drum, radially be provided with the stirring push rod in the interior pivot, the stirring push rod includes connecting portion and broken portion along length direction in proper order, connecting portion and adversion hub connection, the cross section of broken portion is semi-circular. The utility model discloses a broken mummification device of mud is the direct drying mode of burning high temperature hot flue gas, does not need the conversion of heat exchanger exhaust-heat boiler, saves equipment investment, reduces engineering technical standard. The heat source for drying is exhaust hot air which enters along the air inlet in a large amount and is recycled, the oxygen content is low, the dried materials are not easy to oxidize, and the quality of finished products is good. The cross-section of stirring pushing ram anterior segment is semi-circular, and semi-circular face to material and exhanst gas outlet direction, and such setting is to guarantee that the material moves to the export direction as far as, reduces the probability that the material splashes to the import direction. The section of the rear section of the stirring and propelling rod is circular and is directly connected with the main shaft, and the stirring and propelling rod and the crushing rod can be disassembled, assembled and replaced.

As preferred, be provided with the crushing pole that is on a parallel with the internal rotating shaft on the stirring pushing ram that is close to material import one end, be provided with the chain mounting panel on one section inner wall that the mummification rotary drum corresponds crushing pole, be provided with crushing chain on the chain mounting panel. The chain plays a role in preventing sludge from adhering to the inner wall of the drying drum; simultaneously, can effectively promote the striking area of mud, make mud and chain continuously collide at the continuous rotation in-process of inner rotating shaft, the chain can be changed by the dismouting, thickness size is confirmed according to the nature of mud material.

Preferably, the drying drum is provided with a lifting plate on the inner wall corresponding to the fine crushing section, the lifting plate is arranged along the radial direction of the drying drum, and the lifting plate is arc-shaped. The lifting plate can lift the materials from the bottom of the drying drum to a high position for sliding and throwing, so that the sludge materials are conveniently crushed and dried; the lifting plate can be adjusted in angle, disassembled and replaced.

Preferably, a material outlet is formed in one end, far away from the material inlet, of the drying rotary drum, a wind shield is arranged on the inner side of the material outlet, and the wind shield is sleeved on the inner rotary shaft. The wind shield can be disassembled and replaced; the wind shield is arranged to mainly play two roles: one is with hot-blast seal in the rotary drum, under the effect of lifting plate, chain, stirring push rod, crushing stick, forms turbulent air current and makes the abundant mummification material that is used for of heat, and it is second reaches the selection by winnowing purpose of mummification material through changing flue gas exhaust's velocity of flow and direction for mummification product moisture content and particle diameter are more even, and the quality is better.

Further, be provided with on the inner wall that the mummification rotary drum is close to material export one end and keep off the material ring, be provided with ejection of compact baffle on keeping off the material ring, the ejection of compact baffle is the bent plate, the crooked to interior pivot axis direction of ejection of compact board. The material blocking ring is used for increasing the thickness of a sludge material layer and prolonging the retention time of the sludge material in the drying process; the discharge guide plate arranged on the annular circumference of the material baffle plate can enable materials reaching the drying requirement to pass through and discharge, the materials enter the rear section of the outer rotor, and the materials which do not pass through the discharge guide plate can continue to be left in the middle section of the drying rotary drum to continue to be rolled and dried.

Further, be provided with the mummification material mouth on the frame, the mummification material mouth sets up in the material export outside, mummification material mouth top is provided with the cold cigarette gas outlet. Hot flue gas enters the rotary drum from the air inlet at the front end of the drying rotary drum, the temperature is 600-700 ℃, high-temperature air enters the drying rotary drum and contacts with vaporous high-humidity sludge, the sludge material is dried quickly, the drying effect is effectively improved, and the tail gas treatment amount is reduced; with the evaporation of water in the sludge, the hot flue gas is gradually changed into cold flue gas at the temperature of 150-200 ℃, and the cold flue gas is discharged from a cold flue gas outlet. And the sludge particles dried by the high-temperature air are discharged from the drying material port to the sludge crushing and drying device after being screened by the discharging guide plate.

Preferably, one end of the drying rotary drum, which is close to the material inlet, is provided with a hot air guide plate, and the hot air guide plate is provided with an air guide hole. The air guide holes are regularly distributed along the radial direction of the circular surface of the hot air guide plate; the hot air guide plate can be disassembled and replaced. The arrangement ensures that the hot air is dispersed more scientifically and reasonably, and the heat is transferred to the sludge material more efficiently and quickly, so that the drying efficiency is improved; and the gas after the sludge is mixed by the hot air can be rapidly cooled and quenched in a very short time, so that the condition of generating dioxin again is avoided. Under the action of hot air, the sludge moves forward in a Brownian motion mode in the drying rotary drum, fine particles can be bonded with particles with high humidity to reach certain dryness and then are separated again, the uniform drying effect is achieved, and the fine particles slowly move to a material outlet when reaching certain dryness. And finally, the dried material is discharged from a dried material port at the bottom of the drying device, so that the effect of uniform drying is achieved.

Preferably, the stirring and pushing rods on the inner wall of the drying drum comprise a first part and a second part, the stirring and pushing rods of the first part are arranged close to the material inlet, the stirring and pushing rods of the second part are arranged far away from the material inlet, and the distance between the stirring and pushing rods of the first part is smaller than that between the stirring and pushing rods of the second part. After the sludge enters the drying rotary drum from the material inlet, the sludge is broken into boiling particles in the high-speed rotation of the first part of the stirring and pushing rods, the specific surface area is quickly changed, the sludge is quickly pushed to move backwards, and the large accumulation of wet materials at the front end of the drying rotary drum is avoided; and when the sludge enters the second part along with the deep drying rotary drum, the moisture of the sludge is reduced to 50-60%, the volume is reduced, and a sticky adhesive state is formed. The residence time needs to be increased in the second part of the drying rotary drum, the sparse stirring and propelling rod in the second part is utilized to reduce the sludge smashing, and particles which are hard in surface and difficult to smash but still have sludge inside are effectively smashed. Under the interaction of the stirring push rod assembly and the drying rotary drum, the dried sludge has regular particle size and is convenient for subsequent treatment.

Preferably, a sealing structure is arranged at the joint of the drying drum and the machine base. The sealing structure ensures the joint effect of the hot flue gas inlet and the drying rotary drum, improves the sealing effect of the drying rotary drum and prevents gas leakage when the device operates.

Therefore, the utility model discloses following beneficial effect has: (1) the stirring push rod is divided into the connecting part and the crushing part, the crushing part with the semicircular structure is used for ensuring that materials move towards the outlet direction as far as possible, the probability of splashing of the materials towards the inlet direction is reduced, the treatment effect of the sludge crushing and drying device is effectively improved, the drying efficiency is improved, and the service life of the device is prolonged; (2) the chain plays a role in preventing sludge from adhering to the inner wall of the drying drum; meanwhile, the impact area of the sludge can be effectively increased, the sludge is continuously collided with the chain in the continuous rotation process of the inner rotating shaft, the chain can be disassembled and replaced, and the thickness of the chain is determined according to the property of the sludge material; (4) the sludge is broken into boiling particles in the high-speed rotation of the stirring and pushing rod of the first part, the specific surface area is changed rapidly, and the sludge is pushed to move backwards at a high speed, so that the sludge is prevented from being accumulated at the front end of the drying rotary drum, the pushing speed is reduced after the sludge reaches the second part, and the breaking effect is improved.

Drawings

Fig. 1 is a schematic structural diagram of the present invention.

Fig. 2 is a right side view of the present invention.

Fig. 3 is a left side view of the present invention.

Fig. 4 is a schematic structural view of the stirring push rod in fig. 1.

Fig. 5 is a cross-sectional view of the crushing portion of fig. 4.

In the figure: 100-machine base, 200-stirring push rod, 201-connecting part, 202-crushing part, 101-material inlet, 102-material outlet, 103-hot smoke inlet, 104-cold smoke outlet, 1-drying drum, 2-internal rotating shaft, 3-first part, 31-crushing rod, 32-crushing chain, 33-chain fixing plate, 4-second part, 5-hot air guide plate, 51-air guide hole, 6-sealing structure, 7-lifting plate, 8-wind shield, 9-material retaining ring, 91-material discharging guide plate and 10-material drying port.

Detailed Description

The present invention will be further described with reference to the accompanying drawings and the detailed description. Examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary and intended to be used for explaining the present invention, and should not be construed as limiting the present invention.

In the description of the present invention, it is to be understood that the terms "center", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

Examples

As shown in fig. 1 and 2, a sludge crushing and drying device comprises a base, a drying rotary drum is arranged on the base, one end of the drying rotary drum is provided with a material inlet, a hot smoke inlet is arranged above the material inlet, an inner rotary shaft is arranged in the drying rotary drum, a stirring and propelling rod is arranged on the inner rotary shaft along the radial direction, the stirring and propelling rod sequentially comprises a connecting part and a crushing part along the length direction, the connecting part is connected with the inner rotary shaft, and the cross section of the crushing part is semicircular. The utility model discloses a broken mummification device of mud is the direct drying mode of burning high temperature hot flue gas, does not need the conversion of heat exchanger exhaust-heat boiler, saves equipment investment, reduces engineering technical standard. The heat source for drying is exhaust hot air which enters along the air inlet in a large amount and is recycled, the oxygen content is low, the dried materials are not easy to oxidize, and the quality of finished products is good. As shown in figures 4 and 5, the section of the front section of the stirring and propelling rod is semicircular, and the semicircular surface faces the direction of the material and the smoke outlet, so that the arrangement ensures that the material moves towards the outlet direction as much as possible, and the probability of splashing of the material towards the inlet direction is reduced. The section of the rear section of the stirring and propelling rod is circular and is directly connected with the main shaft, and the stirring and propelling rod and the crushing rod can be disassembled, assembled and replaced. Be provided with the crushing pole that is on a parallel with the internal rotation axle on the stirring pushing ram that is close to material import one end, be provided with the chain mounting panel on one section inner wall that the mummification rotary drum corresponds crushing pole, be provided with crushing chain on the chain mounting panel. The chain plays a role in preventing sludge from adhering to the inner wall of the drying drum; simultaneously, can effectively promote the striking area of mud, make mud and chain continuously collide at the continuous rotation in-process of inner rotating shaft, the chain can be changed by the dismouting, thickness size is confirmed according to the nature of mud material.

The inner wall of the drying rotary drum corresponding to the fine crushing section is provided with a lifting plate, the lifting plate is radially arranged along the drying rotary drum, and the lifting plate is arc-shaped. The lifting plate can lift the materials from the bottom of the drying drum to a high position for sliding and throwing, so that the sludge materials are conveniently crushed and dried; the lifting plate can be adjusted in angle, disassembled and replaced.

The one end that the material import was kept away from to the mummification rotary drum is provided with the material export, the material export inboard is provided with the deep bead, the deep bead cup joints and sets up in interior pivot. The wind shield can be disassembled and replaced; the wind shield is arranged to mainly play two roles: one is with hot-blast seal in the rotary drum, under the effect of lifting plate, chain, stirring push rod, crushing stick, forms turbulent air current and makes the abundant mummification material that is used for of heat, and it is second reaches the selection by winnowing purpose of mummification material through changing flue gas exhaust's velocity of flow and direction for mummification product moisture content and particle diameter are more even, and the quality is better. Further, be provided with on the inner wall that the mummification rotary drum is close to material export one end and keep off the material ring, be provided with ejection of compact baffle on keeping off the material ring, the ejection of compact baffle is the bent plate, the crooked to interior pivot axis direction of ejection of compact board. The material blocking ring is used for increasing the thickness of a sludge material layer and prolonging the retention time of the sludge material in the drying process; the discharge guide plate arranged on the annular circumference of the material baffle plate can enable materials reaching the drying requirement to pass through and discharge, the materials enter the rear section of the outer rotor, and the materials which do not pass through the discharge guide plate can continue to be left in the middle section of the drying rotary drum to continue to be rolled and dried. The base is provided with a drying material port, the drying material port is arranged on the outer side of the material outlet, and a cold smoke outlet is arranged above the drying material port. Hot flue gas enters the rotary drum from the air inlet at the front end of the drying rotary drum, the temperature is 600-700 ℃, high-temperature air enters the drying rotary drum and contacts with vaporous high-humidity sludge, the sludge material is dried quickly, the drying effect is effectively improved, and the tail gas treatment amount is reduced; with the evaporation of water in the sludge, the hot flue gas is gradually changed into cold flue gas at the temperature of 150-200 ℃, and the cold flue gas is discharged from a cold flue gas outlet. And the sludge particles dried by the high-temperature air are discharged from the drying material port to the sludge crushing and drying device after being screened by the discharging guide plate.

As shown in fig. 3, a hot air guide plate is arranged at one end of the drying drum close to the material inlet, and an air guide hole is arranged on the hot air guide plate. The air guide holes are regularly distributed along the radial direction of the circular surface of the hot air guide plate; the hot air guide plate can be disassembled and replaced. The arrangement ensures that the hot air is dispersed more scientifically and reasonably, and the heat is transferred to the sludge material more efficiently and quickly, so that the drying efficiency is improved; and the gas after the sludge is mixed by the hot air can be rapidly cooled and quenched in a very short time, so that the condition of generating dioxin again is avoided. Under the action of hot air, the sludge moves forward in a Brownian motion mode in the drying rotary drum, fine particles can be bonded with particles with high humidity to reach certain dryness and then are separated again, the uniform drying effect is achieved, and the fine particles slowly move to a material outlet when reaching certain dryness. And finally, the dried material is discharged from a dried material port at the bottom of the drying device, so that the effect of uniform drying is achieved. The stirring and propelling rod on the inner wall of the drying rotary drum comprises a first part and a second part, the stirring and propelling rod of the first part is arranged close to the material inlet, the stirring and propelling rod of the second part is arranged far away from the material inlet, and the distance between the stirring and propelling rods of the first part is smaller than that between the stirring and propelling rods of the second part. After the sludge enters the drying rotary drum from the material inlet, the sludge is broken into boiling particles in the high-speed rotation of the first part of the stirring and pushing rods, the specific surface area is quickly changed, the sludge is quickly pushed to move backwards, and the large accumulation of wet materials at the front end of the drying rotary drum is avoided; and when the sludge enters the second part along with the deep drying rotary drum, the moisture of the sludge is reduced to 50-60%, the volume is reduced, and a sticky adhesive state is formed. The residence time needs to be increased in the second part of the drying rotary drum, the sparse stirring and propelling rod in the second part is utilized to reduce the sludge smashing, and particles which are hard in surface and difficult to smash but still have sludge inside are effectively smashed. Under the interaction of the stirring push rod assembly and the drying rotary drum, the dried sludge has regular particle size and is convenient for subsequent treatment.

And a sealing structure is arranged at the joint of the drying rotary drum and the machine base. The sealing structure ensures the joint effect of the hot flue gas inlet and the drying rotary drum, improves the sealing effect of the drying rotary drum and prevents gas leakage when the device operates.

In this embodiment, wet sludge material is lifted from the bottom to the top of the drying drum by the lifting plate disposed in the drying drum while entering the drying drum through the material inlet. When falling from the upper surface, the sludge is rapidly crushed and pushed by the crushing rod and the stirring push rod which rotate at high speed, and the sludge is repeatedly stirred and fully contacted with high-temperature hot air to evaporate and dry the water. In the propelling section, the large materials are crushed into small blocks with wet surfaces, the small blocks are contacted with hot air, and the small blocks are rapidly propelled to the middle section of the drying rotary drum to reach the fine crushing section through the stirring propelling rod. The small material is crushed into particles by the stirring and propelling rod of the fine crushing section and the fine crushing rotating wheel at the tail end of the stirring and propelling rod, and the fine crushing rotating wheel carries out continuous variable speed motion under the action of the rotating wheel accelerating part on the inner wall of the drying rotary drum, so that the small material collides with the sludge block thrown down by the sliding of the lifting plate at the top end in the drum in the one-time impact accelerating process of the stop rod. In this embodiment, the drying drum is externally provided with an external rotation motor, the drying drum rotates in a reciprocating manner under the driving of the external rotation motor, the internal rotation shaft is connected with an internal rotation motor, and the internal rotation motor drives the internal rotation shaft and the stirring push rod assembly thereon to continuously rotate at a high speed in one direction. The mud material gets into the smart section of smashing from the propulsion section, arrives at the fender material ring with almost unified granularity under the smart section of smashing lasts the effect, and the ejection of compact baffle on keeping off the material ring is the annular plate to the crooked of interior pivot direction, and the ejection of compact baffle blocks the mud that the granularity is not conform to the preset requirement, makes its reentrant smart section's the processing process, and the mud that accords with the preset requirement is discharged from the material export.

In addition to the above embodiments, the technical features of the present invention can be re-selected and combined within the scope of the present invention as disclosed in the claims and the specification to constitute new embodiments, which can be realized by those skilled in the art without any creative work, therefore, the embodiments of the present invention not described in detail should be regarded as specific embodiments of the present invention and within the protection scope of the present invention.

Claims (9)

1. The utility model provides a broken mummification device of mud, characterized by, includes the frame, be provided with the mummification rotary drum on the frame, mummification rotary drum one end is provided with the material import, material import top is provided with the hot cigarette air inlet, be provided with interior pivot in the mummification rotary drum, radially be provided with the stirring push rod in the interior pivot, the stirring push rod includes connecting portion and crushing portion along length direction in proper order, connecting portion and adversion hub connection, the cross section of crushing portion is semi-circular.

2. The sludge crushing and drying device as claimed in claim 1, wherein the stirring and propelling rod near the material inlet is provided with a crushing rod parallel to the inner rotating shaft, and a chain mounting plate is arranged on a section of the inner wall of the drying drum corresponding to the crushing rod, and the chain mounting plate is provided with a crushing chain.

3. The sludge crushing and drying device as claimed in claim 1, wherein a lifting plate is further arranged on the inner wall of the drying drum, the lifting plate is arranged at the tail of the chain mounting plate, the long edge of the lifting plate is arranged along the length direction of the drying drum, the wide edge of the lifting plate is arranged along the radial direction of the drying drum, and the wide edge of the lifting plate is arc-shaped.

4. The sludge crushing and drying device as claimed in claim 1, wherein a material outlet is arranged at one end of the drying drum away from the material inlet, a wind shield is arranged at the inner side of the material outlet, and the wind shield is sleeved on the inner rotating shaft.

5. The sludge crushing and drying device as claimed in claim 4, wherein a material blocking ring is arranged on the inner wall of one end of the drying drum close to the material outlet, a material discharging guide plate is arranged on the material blocking ring, the material discharging guide plate is a bent plate, and the material discharging guide plate is bent towards the axis direction of the inner rotating shaft.

6. The sludge crushing and drying device according to claim 4, wherein a drying material port is arranged on the machine base, the drying material port is arranged outside the material outlet, and a cold smoke outlet is arranged above the drying material port.

7. The sludge crushing and drying device as claimed in claim 1, wherein a hot air guide plate is arranged at one end of the drying drum close to the material inlet, and an air guide hole is arranged on the hot air guide plate.

8. The sludge crushing and drying device as claimed in any one of claims 1 to 7, wherein a sealing structure is arranged at the joint of the drying drum and the machine base.

9. The sludge crushing and drying device as claimed in any one of claims 1 to 7, wherein the stirring and pushing rods on the inner wall of the drying drum comprise a first part and a second part, the stirring and pushing rods of the first part are arranged near the material inlet, the stirring and pushing rods of the second part are arranged far away from the material inlet, and the distance between the stirring and pushing rods of the first part is smaller than that between the stirring and pushing rods of the second part.

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