CN201844663U

CN201844663U - Charge pipe-type coal dryer

Info

Publication number: CN201844663U
Application number: CN201020564004XU
Authority: CN
Inventors: 杨裕能
Original assignee: Nantong Haiying Electromechanical Group Co Ltd
Current assignee: Nantong Haiying Electromechanical Group Co Ltd
Priority date: 2010-10-15
Filing date: 2010-10-15
Publication date: 2011-05-25
Anticipated expiration: 2020-10-15

Abstract

The utility model relates to a charge pipe-type coal dryer, which belongs to the technical field of drying equipment. The coal dryer comprises a rotary barrel which is obliquely supported on a barrel support; both ends of the barrel are respectively provided with a feed bin and a discharge bin; a set of drying pipes extending to a discharge end from a feed end are arranged in the barrel; the feed end is provided with a material receiving port located in the feed bin and is higher than the discharge end; helical blades forming helical channels are arranged in the drying pipes; the discharge end is communicated with the discharge bin; and a heating cavity for a heat-transfer medium to circulate is formed between the wall of the barrel and the walls of the drying pipes. Because the heat-transfer medium is not in direct contact with coal in the drying process, the whole drying process is safe and reliable, and the potential safety hazards possibly generated by directly drying low-burning point coal are completely avoided. Moreover, the coal is continually rolled when being helically conveyed in the drying process, the coal is evenly heated, and moreover, the heat transfer is sufficient, thereby effectively reinforcing the drying effect and increasing the drying amplitude.

Description

Material tubular type coal drier

Technical field

The utility model relates to a kind of drying machine, and especially a kind of material tubular type coal drier belongs to the drying equipment technical field.

Background technology

Understand according to the applicant, brown coal are because fixed carbon content is low, and easily moisture absorption, so water content height are difficult to drying.These problems must be properly settled in brown coal industrialized utilization process.

The drying of brown coal can be divided into low temperature drying, high temperature drying by the temperature of drying medium; Be divided into convection drying, contact drying with the way of contact.

Application number is that the Chinese patent of CN01249081.4 discloses a kind of full automatic high efficiency moulded coal drying machine, this machine is by air-heater, blender, drying machine constitutes, drying machine is by housing, carry fire grate, reductor, wind-distributing pipe, blast pipe, the humidity discharging pipe, compositions such as humidity discharging recirculation pipe, the blast pipe of 200 ℃ of hot blasts being sent into drying machine by hot-blast stove carries out drying to carrying the moulded coal on the fire grate, carry fire grate by the reductor driven rotary, moisture is discharged by the humidity discharging pipe, delayed heat moisture is recovered to hot-blast stove and recycles, though this machine has the drying efficiency advantages of higher, but, therefore there is potential safety hazard owing to belong to " direct-type " drying.

The utility model content

The purpose of this utility model is: the shortcoming at above-mentioned prior art exists proposes a kind of not only drying efficiency height, and can guarantee safe material tubular type coal drier.

In order to reach above purpose, material tubular type coal drier basic structure of the present utility model is: comprise the rotary barrel that tilts to be supported on the cartridge mount, the two ends of described cylindrical shell are respectively equipped with feeding warehouse and go out feed bin; One group of drying tube that is extended to discharge end by feed end is housed in the described cylindrical shell; Described feed end has the material receiving port that is positioned at feeding warehouse, and is higher than discharge end; The helical blade that forms helical duct is housed in the described drying tube; Described discharge end with go out feed bin and communicate; Form the heating chamber of heat transfer medium circulation between the barrel of described cylindrical shell and the tube wall of drying tube.

During work, heat transfer medium enters in the heating chamber of cylindrical shell, behind the coal charge input feeding warehouse to be dried, enter in the drying tube by material receiving port, under the turning effort of gravity and cylindrical shell, transport to discharge end by feed end gradually along helical duct, be heated in this process, moisture content wherein becomes steam; When coal charge when discharge end is fallen out feed bin, water evaporates, thus finish dry run.

Because in dry run, heat transfer medium directly contact with coal, so makes whole dry run safety, reliably, has avoided the issuable potential safety hazard of low ignition point coal employing convection drying fully.And therefore because in the dry run, coal charge constantly rolls in helical feed, not only be heated evenly, and conduct heat fully, efficient hardening drying effect, increased dry amplitude.

Description of drawings

Below in conjunction with accompanying drawing the utility model is further described.

Fig. 1 is the structural representation of an embodiment of the utility model.

Fig. 2 is the barrel support structural representation of Fig. 1.

Fig. 3 is that the A of Fig. 1 is to view.

Fig. 4 is the cylindrical shell schematic cross-section of Fig. 1.

The specific embodiment

Embodiment one

The material tubular type coal drier of present embodiment as shown in Figure 1, rotary barrel 1 two ends tilt and to be supported on two pairs of cartridge mount 2.Each cartridge mount 2 is made of three coaxial backing rolls, each to two footpath backing roll 2-1 broad in the middle of cartridge mount 2 respectively with cylindrical shell 1 on strengthen hoop 1-4 both sides, bottom rolling cut contact, and the baffle ring limit by both sides constitutes axial constraint with reinforcement hoop 1-4, as shown in Figure 2, the two ends path backing roll 2-2 of each cartridge mount 2 is supported on the concave shape basis 3 that bearing block is installed.Cylindrical shell 1 central authorities are in transmission connection by transmission mechanism and drive roll 2-3, and the roll shaft and the motor of this drive roll are in transmission connection.Therefore, behind the electric motor starting, can drive the cylindrical shell rotation.

The two ends of cylindrical shell 1 are respectively equipped with the feeding warehouse 4 of load on horizontal support channel-section steel 8 and go out feed bin 5 (referring to Fig. 3).Feeding warehouse 4 and go out feed bin 5 and cylindrical shell 1 between revolute pair airtight and watertight padding circle 9 is housed.The upper end of feeding warehouse 4 is charging aperture 4-1, is connected with the sealing induction system; The lower end is the material outlet 4-2 that is scattered.The upper end that goes out feed bin 5 is moisture content outlet 5-1, connects the deduster pipeline; The lower end is siccative outlet 5-2, delivers to warehouse for finished product through the sealing induction system.

One group of drying tube 6 that is extended to discharge end by feed end is housed in the cylindrical shell 1.Drying tube 6 is intervally arranged (referring to Fig. 4) with the mode layering around pivot, and its feed end has the radially material receiving port 6-1 that is positioned at feeding warehouse, and the height of feed end is higher than discharge end.The helical blade 6-2 that forms helical duct is housed in the drying tube 6.Discharge end with go out feed bin 5 and communicate.Form heat transfer medium between the tube wall of the barrel of cylindrical shell 1 and drying tube 6---the heating chamber of steam circulation.

The steam inlet tube 1-1 towards heating chamber is equipped with at the center of cylindrical shell 1 feed end, and condensating water outlet tube 1-2 is equipped with at the center of discharge end

During work, with the raw coal of certain particle size by the charging aperture input after, material receiving port is evenly distributed to coal charge in each drying tube of inner barrel in rotary course, because drying tube tiltably-mounted, be provided with helical blade wherein, therefore coal charge is sent to along the continuous upset of drying tube under the guide functions of gravity and helical blade.The superheated steam of input cylindrical shell heating chamber heats up the raw coal in the drying tube in the peripheral heating of each drying tube by indirect heat exchange, and water evaporates is extracted out by going out feed bin by deduster at last, thereby reached the purpose that reduces moisture content.

Compared with prior art, the drying machine of present embodiment has following technical characterstic:

1. because heat transfer medium does not directly contact with coal, make whole dry run safety, reliable thoroughly to have solved the production safety problem that the low ignition point coal adopts " direct-type " drying to bring.

2. many drying tubes disperse coal, have strengthened drying effect, have increased the effective drying surface of drying machine greatly, have increased dry amplitude.

3. drying tube adopts on-the-spot expand tube mode to install, and is very convenient.

4. be provided with the helical blade that spring steel is made in the drying tube, coal charge played the water conservancy diversion decelerating effect, make heat exchange carry out more fully, complete.

In a word, because heat transfer medium does not directly contact with coal in dry run, avoided the low ignition point coal to adopt the issuable potential safety hazard of convection drying.And owing in the dry run, under the guiding and gravity effect of rotation of coal charge cylindrical shell and helical blade, do compound flip-flop movement, therefore be heated evenly, conduct heat fully, thereby make the moisture content complete evaporation, drying efficiency significantly improves, and has effectively utilized the energy.

In addition to the implementation, the utility model can also have other embodiments.All employings are equal to the technical scheme of replacement or equivalent transformation formation, all drop on the protection domain of the utility model requirement.

Claims

1. a material tubular type coal drier comprises the rotary barrel that tilts to be supported on the cartridge mount, and the two ends of described cylindrical shell are respectively equipped with feeding warehouse and go out feed bin; One group of drying tube that is extended to discharge end by feed end is housed in the described cylindrical shell; Described feed end has the material receiving port that is positioned at feeding warehouse, and is higher than discharge end; The helical blade that forms helical duct is housed in the described drying tube; Described discharge end with go out feed bin and communicate; Form the heating chamber of heat transfer medium circulation between the barrel of described cylindrical shell and the tube wall of drying tube.

2. material tubular type coal drier according to claim 1 is characterized in that: described drying tube is intervally arranged with the mode layering around pivot, and its feed end has the radially material receiving port that is positioned at feeding warehouse.

3. material tubular type coal drier according to claim 2 is characterized in that: described rotary barrel two ends tilt to be supported on two pairs of cartridge mount; Described each cartridge mount is made of three coaxial backing rolls, described two footpath broad in the middle backing rolls to cartridge mount respectively with cylindrical shell on strengthen hoop both sides, bottom rolling cut contact.

4. material tubular type coal drier according to claim 3 is characterized in that: described footpath broad in the middle backing roll constitutes axial constraint by the baffle ring limit of both sides with the reinforcement hoop.

5. material tubular type coal drier according to claim 4 is characterized in that: the two ends path backing roll of described cartridge mount is supported on the concave shape basis that bearing block is installed.

6. material tubular type coal drier according to claim 5 is characterized in that: described cylindrical shell central authorities are in transmission connection by transmission mechanism and drive roll, and the roll shaft and the motor of described drive roll are in transmission connection.

7. material tubular type coal drier according to claim 6 is characterized in that: the feeding warehouse at described cylindrical shell two ends and go out feed bin and carry on a shoulder pole respectively on the horizontal support channel-section steel, described feeding warehouse and go out feed bin and cylindrical shell between revolute pair the airtight and watertight padding circle is housed.

8. material tubular type coal drier according to claim 7, it is characterized in that: the upper end of described feeding warehouse is provided with charging aperture, and the lower end is provided with the material outlet of being scattered; The described upper end that goes out feed bin is the moisture content outlet, and the lower end is provided with the siccative outlet.

9. material tubular type coal drier according to claim 8, it is characterized in that: the steam inlet towards heating chamber is equipped with at the center of described cylindrical shell feed end, and condensating water outlet tube is equipped with at the center of discharge end.