CN216687872U

CN216687872U - Gaseous direct contact mud stagnates empty drying device

Info

Publication number: CN216687872U
Application number: CN202220112806.XU
Authority: CN
Inventors: 解奥
Original assignee: Individual
Current assignee: Individual
Priority date: 2022-01-17
Filing date: 2022-01-17
Publication date: 2022-06-07
Anticipated expiration: 2032-01-17

Abstract

The utility model relates to a gas direct contact sludge stagnation drying device which comprises a rotary drying cylinder, wherein a wet sludge feeding hole and a smoke inlet are formed in the rotary drying cylinder, a dust collecting bin is connected and mounted at the rear side of the rotary drying cylinder, a smoke outlet and a dry sludge outlet are formed in the dust collecting bin, a plurality of inclined flow guide shoveling plates are spirally distributed on the inner wall of the rotary drying cylinder along the axial direction, and a double-shaft rotating rod is eccentrically arranged in the rotary drying cylinder. The utility model has scientific and reasonable design, the sludge mixed with the high-temperature flue gas and thrown down is lifted by the inclined spiral diversion shoveling plate and lifted to the highest point for throwing down again, the sludge forms a stagnant phase in the throwing process, the contact area with the flue gas is enlarged, the sludge is further crushed by the crushing teeth on the double-shaft rod after falling down and is pushed to the dust collecting bin by the shoveling plate, the sludge dewatering-drying integrated treatment is realized, the efficiency is high, the cost is low, and the utility model is suitable for conversion, application and popularization.

Description

Gaseous direct contact mud stagnates empty drying device

Technical Field

The utility model belongs to the field of chemical equipment, relates to a sludge evaporation drying technology, and particularly relates to a sludge stagnation drying device with direct gas contact.

Background

The sludge is a necessary product in the sewage treatment process, the domestic sludge generated in China every year is up to more than 5000 ten thousand tons, and the water content of the domestic sludge is more than 80 percent. The sludge has large water content and small organic dry matter content, and if the sludge is subjected to drying treatment and composting (or incineration) according to a conventional drying method, the natural ecological environment can be influenced, and the recycling effect of the sludge can be reduced. Therefore, the sludge is dehydrated and reduced in advance, which is the premise of realizing later-stage comprehensive treatment and utilization.

The prior art is divided into natural drying, direct heating drying and indirect heating drying, and the like, and usually an external heating source is adopted to perform corresponding drying treatment on sludge, but the methods all need to consume a large amount of energy, have higher cost, and have small contact area between the sludge and the heat source and low drying efficiency. In conclusion, the sludge drying device which is convenient to use and low in cost has important conversion and application significance for realizing harmless, quantitative and resource treatment of sludge.

SUMMERY OF THE UTILITY MODEL

The utility model aims to overcome the defects of the prior art and provide the gas direct contact sludge stagnation drying device integrating the dehydration and drying of the water-containing sludge.

The technical problem to be solved by the utility model is realized by adopting the following technical scheme:

the utility model provides a gaseous direct contact mud stagnates empty drying device, is provided with wet mud feed inlet including setting up the rotary drying section of thick bamboo on the support frame on the front side upper portion of this rotary drying section of thick bamboo, is provided with the flue gas inlet at the downside of wet mud feed inlet, is provided with the flue gas distributor at the flue gas entrance point rotary drying section of thick bamboo's rear side is connected and is installed the dust and collect the storehouse, has seted up the exhanst gas outlet on the upper portion in this dust collection storehouse, has seted up dry sludge outlet in the lower part rotary drying section of thick bamboo inner wall has laid a plurality of slant water conservancy diversion shoveling plates along axial spiral rotary drying section of thick bamboo is interior eccentric and is provided with the biax bull stick, the biax bull stick respectively through the connection motor drive that corresponds.

The double-shaft rotating rod comprises a first supporting rod and a second supporting rod, a plurality of unit crushing teeth are uniformly distributed on the first supporting rod and the second supporting rod at intervals, and the unit crushing teeth on the first supporting rod and the unit crushing teeth on the second supporting rod are arranged in a staggered insertion mode at intervals.

An electric control driving wheel is arranged at the lower part of the rotary drying cylinder, a gear disc is arranged at the upper part of the rotary drying cylinder, and a riding wheel is arranged at one side of the electric control driving wheel at the lower part of the rotary drying cylinder.

The utility model has the advantages and positive effects that:

1. the inner wall of the rotary drying cylinder is spirally provided with a plurality of inclined flow guide shoveling plates along the axial direction, the inclined shoveling plates of the spiral structure throw sludge to form a stagnant phase, the sludge falls to a position contacting with the crushing teeth to be further crushed, and the dried sludge pushed to the dust collecting bin by the shoveling plates and large-particle sludge brought out by flue gas are settled and collected at the bottom of the dust collecting mechanism, so that the sludge treatment effect is effectively improved.

2. The double-shaft rotating rod is eccentrically arranged in the rotary drying cylinder, the first supporting rod and the second supporting rod are uniformly provided with the plurality of unit crushing teeth at intervals, the unit crushing teeth on the first supporting rod and the unit crushing teeth on the second supporting rod are arranged in a mutually spaced and staggered insertion manner, the sludge crushing efficiency can be effectively improved through double-shaft driving, and the adjacent crushing teeth on the two supporting rods arranged in the mutually spaced and staggered insertion manner can realize the mutual scraping effect of adhered sludge, so that the self-cleaning function is realized.

3. The utility model has scientific and reasonable design, the sludge with water enters the rotary drying cylinder and then is mixed with high-temperature flue gas to turn in the rotary cylinder, the thrown-down sludge is lifted by the inclined spiral diversion shoveling plate and lifted to the highest point to be thrown down again, the sludge forms a stagnant phase in the throwing process, the contact area with the flue gas is enlarged, the sludge falls down and is further crushed by the crushing teeth on the double-shaft rod and is pushed to the dust collection bin by the shoveling plate, wet flue gas is discharged from the upper outlet of the dust collection bin, the bottom of the dust collection bin realizes the collection of the dried sludge, the integrated treatment of sludge dehydration and drying is realized, the efficiency is high, the cost is low, and the utility model is suitable for conversion, application and popularization.

Drawings

FIG. 1 is a schematic structural view (partially in section) of the present invention;

fig. 2 is a left side view of fig. 1.

Detailed Description

The present invention will be described in further detail with reference to the following embodiments, which are illustrative only and not limiting, and the scope of the present invention is not limited thereby.

The utility model provides a gaseous direct contact mud stagnates empty drying device, as shown in figure 1, including setting up rotary drying cylinder 2 on support frame 10, is provided with wet mud feed inlet 1 on the front side upper portion of this rotary drying cylinder, is provided with flue gas inlet 14 at the downside of wet mud feed inlet, and this flue gas inlet point is provided with flue gas distributor 15 rotary drying cylinder's rear side is connected and is installed the dust and collect storehouse 8, has seted up exhanst gas outlet 7 on the upper portion in this dust collection storehouse, and dry sludge outlet 11 has been seted up to the lower part.

As shown in fig. 2, the innovation of the present invention lies in that a plurality of oblique guiding shoveling plates 4 are spirally arranged along the axial direction on the inner wall of the rotary drying cylinder, and at the same time, a biaxial rotating rod is eccentrically arranged in the rotary drying cylinder, the biaxial rotating rod comprises a first supporting rod 5 and a second supporting rod 51, a plurality of unit crushing teeth 6 are uniformly distributed on the first supporting rod and the second supporting rod at intervals, the unit crushing teeth on the first supporting rod and the unit crushing teeth on the second supporting rod are alternately inserted and arranged at intervals, and the biaxial rotating rod is driven by corresponding connecting motors 9 respectively.

The lower part of the rotary drying cylinder is provided with an electric control driving wheel 13, the upper part of the rotary drying cylinder is provided with a gear disc 3, one side of the electric control driving wheel at the lower part of the rotary drying cylinder is provided with a riding wheel 12, the electric control driving wheel is used for supporting and driving the rotary drying cylinder to rotate, the gear disc and the riding wheel both play the roles of limiting and reducing the rotation resistance, and the rotary drying cylinder is opposite to the rotation direction of the double-shaft rotating rod.

In the specific implementation process of the utility model, the rotary drying cylinders are horizontally arranged, and the overall dimension is set as follows: the diameter of the inner wall is 850mm, the length of the inner wall is 2800mm, two sides of the rotary drying cylinder are connected with a baffle by a sealing structure, a plurality of oblique flow guide shoveling plates are spirally distributed on the inner wall of the rotary drying cylinder along the axial direction, and the spiral angle is 30 degrees and the height of each unit shoveling plate is 100 mm.

A flue gas inlet pipe with the diameter of 150mm is installed at a flue gas inlet at one side of the rotary drying cylinder, the rotary drying cylinder is communicated with the dust collecting bin, and a flue gas outlet end at the top of the dust collecting bin is fixedly provided with a flue gas outlet pipe with the diameter of 150 mm. The unit crushing teeth on the first supporting rod and the unit crushing teeth on the second supporting rod are arranged in a staggered insertion mode at intervals, and the interval between every two adjacent crushing teeth is 50 mm.

The working process of the utility model is as follows:

sludge with water content of 80% conveyed by a conveyor is uniformly added into an inlet of a rotary drying cylinder, and hot flue gas with temperature of 320 ℃ is 10000m³The flow speed of/h is introduced into the rotary drying cylinder from the flue gas inlet. The rotary drying cylinder is driven by an electric control driving wheel and a riding wheel to rotate at a speed of 4r/min, the thrown sludge is lifted by the inclined spiral diversion shoveling plate and lifted to the highest point to be thrown again, the sludge forms a stagnant space phase in the throwing process, the stagnant space phase has a large surface area, and the rotary drying cylinder has a good contact effect with flue gas and a good drying effect.

The thrown sludge is dried by contacting with the flue gas and then falls to the rotating double shaft rotating at high speed, and is strongly crushed by the crushing teeth on the rotating double shaft, and simultaneously, the sludge adhered to the crushing teeth is automatically cleaned by the spaced crushing teeth. The sludge is continuously pushed to a dust collecting bin by the inclined spiral diversion shoveling plate in the process of throwing, drying and crushing, and the dried sludge particles 16 are collected. The temperature of the wet flue gas at the outlet is 120 ℃, large-particle sludge carried by the wet flue gas falls into the bottom of the dust collecting mechanism and is collected, and the moisture content of the dried sludge is about 10%.

Although the embodiments of the present invention and the accompanying drawings are disclosed for illustrative purposes, those skilled in the art will appreciate that: various substitutions, changes and modifications are possible without departing from the spirit and scope of the utility model and the appended claims, and therefore the scope of the utility model is not limited to the disclosure of the embodiments and the accompanying drawings.

Claims

1. The utility model provides a gaseous direct contact mud stagnates empty drying device which characterized in that: including setting up the rotary drying section of thick bamboo on the support frame, be provided with wet mud feed inlet on the front side upper portion of this rotary drying section of thick bamboo, be provided with flue gas inlet at the downside of wet mud feed inlet rotary drying section of thick bamboo's rear side is connected and is installed the dust and collect the storehouse, has seted up the exhanst gas outlet on the upper portion in this dust collection storehouse, and dry mud export has been seted up to the lower part rotary drying section of thick bamboo inner wall has laid a plurality of slant water conservancy diversion shoveling plates along axial spiral the eccentric biax bull stick that is provided with in the rotary drying section of thick bamboo.

2. The gas direct contact sludge stagnation drying device according to claim 1, characterized in that: the double-shaft rotating rod comprises a first supporting rod and a second supporting rod, and a plurality of unit crushing teeth are uniformly distributed on the first supporting rod and the second supporting rod at intervals.

3. The gas direct contact sludge stagnation drying device according to claim 2, characterized in that: the unit crushing teeth on the first supporting rod and the unit crushing teeth on the second supporting rod are arranged in a staggered insertion mode at intervals.

4. The gas direct contact sludge stagnation drying device according to claim 1 or 2, characterized in that: the double-shaft rotating rods are respectively driven by corresponding connecting motors.

5. The gas direct contact sludge stagnation drying device according to claim 1, characterized in that: an electric control driving wheel is arranged at the lower part of the rotary drying cylinder, a gear disc is arranged at the upper part of the rotary drying cylinder, and a riding wheel is arranged at one side of the electric control driving wheel at the lower part of the rotary drying cylinder.

6. The gas direct contact sludge stagnation drying device according to claim 1, characterized in that: the smoke inlet end is provided with a smoke distributor.