CN202339073U

CN202339073U - Auxiliary heating steam rotary dryer

Info

Publication number: CN202339073U
Application number: CN201120477454XU
Authority: CN
Inventors: 陈强; 吴峰; 郭瑞刚; 张波; 史雷; 王艳; 杜斌; 王洪洲
Original assignee: Tianli Energy-Saving Engineering Co Ltdof Shandong Academy Of Sciences
Current assignee: Tianli Energy-Saving Engineering Co Ltdof Shandong Academy Of Sciences
Priority date: 2011-11-26
Filing date: 2011-11-26
Publication date: 2012-07-18
Anticipated expiration: 2021-11-26

Abstract

The utility model provides an auxiliary heating steam rotary dryer, which comprises a roller for accommodating a material to be dried, and a rotating and supporting device for supporting and driving the roller to rotate, wherein the roller has a feed end and a discharge end, and the feed end is structured and used for receiving the material to be dried; the discharge end is structured and used for discharging the dried material, and the feed end is provided with a feed end plate; the discharge end is provided with a discharge sealing plate and a discharge cover, and a plurality of heat exchange pipe components which rotate along with the roller are arranged in the roller; and a roller body heat tracing device which is connected with the heat exchange pipe components is arranged outside the roller close to the feed end area, and rotates along with the roller. The auxiliary heating steam rotary dryer adopts a roller body heat tracing structural form, accordingly, when the dried material has higher water content, the temperature of a roller wall can be increased, the moisture evaporation of the dried material is promoted, and the fluidity of the material is improved.

Description

The auxiliary heating type steam rotary dryer

Technical field

The utility model relates to a kind of drying equipment, relates in particular to a kind of auxiliary heating type steam rotary dryer that is used for the dry wet powder material.

Background technology

Steam rotary dryer be a kind of be the indirect heat exchange swinging drying equipment of thermal source with steam, it is applicable to the drying of the wet powder material in the industries such as metallurgy, chemical industry, environmental protection, building materials.As: powdered copper concentrate, the smart powder of iron, the smart powder of nickel, coal dust, desulfurated plaster, sulphite etc.The more steam rotary dryer of present domestic use divides two kinds, and a kind of is straight tube monoblock type drying machine, such as EP0305706A2 description, promptly heat exchanger tube adopts the straight tube run through whole cylindrical shell, heat exchanger tube is weldingly fixed on the cylindrical shell; Another kind is independent detachable drying machine, such as US6415527B1, US2006/0242855A1 description, promptly be not fixedly connected between heat exchanger tube and the cylindrical shell, barrel is provided with the heat exchanger tube supporting construction.Independent detachable steam rotary dryer is compared with straight tube monoblock type steam rotary dryer, have the heat exchanger tube maintenance change convenient, the heat exchanger tube wearing and tearing are little, big, the thermal efficiency advantages of higher of heat exchange area on year-on-year basis.But the detachable drying machine of present independence is in operation, and following shortcoming occurs:

1, when the material moisture that is dried is higher, poor because of material fluidity, very easily cause material to be piled up at charging aperture; Wall sticking phenomenon appears in cylinder inboard wall, heat exchanger tube outside; Not only hinder the exchange heat between material and the heat exchanger tube, reduced heat exchange efficiency, when material has corrosivity; Also can quicken the corrosion of heat exchanger tube and cylinder inboard wall, reduced the service life of heat exchanger tube and cylindrical shell in sticking wall position.

2, be dried before material gets into drying machine by upstream process, need special equipment and send into material in the drying machine from dryer outer.Owing to when aspects such as selected apparatus-form and structure, material get into drying machine from charging aperture, be prone to a large amount of excessive phenomenons; Cause airborne dust serious, the execute-in-place environment is poor, and is unfavorable to health; Need periodic cleaning on-the-spot simultaneously, the labor manpower and materials.

3, when dry material abrasion when strong, drying machine heat exchange tube assemblies straight tube and endless tube welding position serious wear, behind the long-play, tube wall is understood attenuate.When tube wall is thinned to can not tolerate operating pressure the time, can cause a large amount of steam leakages, reduce drying effect, reduce the service life of drying machine heat exchange tube assemblies.

4, outer heat exchanger tube straight tube of discharging cover and discharging sealing plate gap are bigger, and dried material is prone to reveal, and causes the execute-in-place environment poor, need periodic cleaning on-the-spot, the labor manpower and materials.

5, the main steam distributor chamber is connected with the heat exchanger tube straight tube to adopt and is threaded, and seal adopts the Graphite pad sealing, and this version is in maintenance process; To pad change strict; The not positive situation in sealing surface location does not with great difficulty appear in operation, makes the easy leakage of steam in the equipment running process, and the repair time is short; Maintenance load is big, and influence is produced.

Summary of the invention

The purpose of the utility model is the above-mentioned deficiency that is to overcome prior art; A kind of auxiliary heating type steam rotary dryer is provided; Solve in the existing steam rotary dryer cylinder that material fluidity is poor, there is the problem of wall sticking phenomenon in cylinder inboard wall and heat exchange tube assemblies outside, and further solve easy returning charge that existing steam rotary dryer exists, leak material, problems such as heat exchanger tube service life is short, processing cost and maintenance cost height.

A kind of auxiliary heating type steam rotary dryer that the utility model provides; Comprise the cylinder that is used for ccontaining material to be dried, support the also rotating supporting device of head roll rotation, this cylinder has feed end and two ends of discharge end; This feed end is configured to accept material to be dried; This discharge end is configured to discharge dried material, and said feed end is provided with the charging end plate, and said discharge end is provided with discharging sealing plate and discharging cover; Be provided with a plurality of heat exchange tube assemblies that play rotation with one of which in the cylinder; Each heat exchange tube assemblies comprise two with the straight tube of cylinder axially parallel and between two straight tubes, be connected a plurality of endless tubes that connect with two straight tubes, each endless tube is parallel to each other, it is outer and be communicated with the main steam distributor chamber that straight tube extends to the discharging sealing plate; Cylinder outer wall is provided with the cylindrical shell that is connected perforation with heat exchange tube assemblies near the feed end zone and accompanies hot device, and this cylindrical shell accompanies hot device to rotate with cylinder.

In order to improve the flowability of material to be dried; The described a kind of auxiliary heating type steam rotary dryer of the utility model; Cylindrical shell accompanies hot device to comprise at least one companion's thermic devices, connect the jet chimney of this companion's thermic devices and heat exchange tube assemblies; Said companion's thermic devices comprises two steam distribution chamber and is connected a plurality of parallel annular heat tracing pipes road between these two steam distribution chamber that said companion's thermic devices is fixedly attached on the cylinder outer wall through a plurality of companion's heat fixation plates.

One of preferred structure of a kind of auxiliary heating type steam rotary dryer that the utility model provides is, said jet chimney one end is connected with steam distribution chamber, and the other end passes cylinder outer wall and is connected with the endless tube of heat exchange tube assemblies.

One of another kind of preferred structure of a kind of auxiliary heating type steam rotary dryer that the utility model provides is, said jet chimney one end is connected with steam distribution chamber, and the other end passes the charging end plate and is connected with the straight tube of heat exchange tube assemblies.

In order further to improve the flowability of material to be dried; It is quick more, even that material to be dried is heated; The described a kind of auxiliary heating type steam rotary dryer of the utility model; Said cylindrical shell accompanies hot device to be provided with two companion's thermic devices, and the heat tracing pipe road of these two companion's thermic devices is that central point is arranged with the cylinder center of circle, and pipeline connects the steam distribution chamber of these two companion's thermic devices.

The described a kind of auxiliary heating type steam rotary dryer of the utility model; Said cylindrical shell accompanies hot device to be provided with two companion's thermic devices; The heat tracing pipe road of these two companion's thermic devices is the center symmetric arrangement with the cylinder center of circle; Pipeline connects the steam distribution chamber of these two companion's thermic devices, and two jet chimneys parts of these two companion's thermic devices recline in the same way and extend and be built in the pillar, and pillar is connected with cylinder wall to be fixed.

In order to reduce the excessive of material to be dried; The described a kind of auxiliary heating type steam rotary dryer of the utility model; Be connected with the lead screw device that rotates synchronously with cylinder on the said charging end plate; Said lead screw device comprises toroidal shell and is arranged on the many groups helical blade on the inner walls, and the rotation direction of helical blade is identical with the cylinder direction of rotation for seeing from feed end, and the lead screw device is positioned at the inwall that cylinder one end is stuck in the charging end plate.

In order to reduce the wearing and tearing of heat exchange tube assemblies straight tube and endless tube welding position, the described a kind of auxiliary heating type steam rotary dryer of the utility model, said endless tube and straight tube connecting portion are provided with protective sleeve, and protective sleeve spot welding is connected on endless tube and the straight tube.

Leakage for the dried material that reduces heat exchanger tube straight tube and discharging sealing plate gap location; The described a kind of auxiliary heating type steam rotary dryer of the utility model; The around openings of said discharging sealing plate and each straight tube opposite position is provided with stuffing-box; Load filler between stuffing-box and straight tube, gland compresses filler.

In order not just not improve main steam distributor chamber and heat exchanger tube straight tube junction sealing surface location; Reduce steam leakage, the described a kind of auxiliary heating type steam rotary dryer of the utility model, said main steam distributor chamber adopts flange to be connected with straight tube through flexible pipe; The flexible pipe both ends respectively are provided with flange; Main steam distributor chamber fairlead end is provided with flange, and straight tube extends to the outer end of discharging sealing plate and is provided with screwed flange, is equipped with the sealing of metal wound gasket between flexible pipe and straight tube and the fairlead.

In order further to improve the flowability of material to be dried, the described a kind of auxiliary heating type steam rotary dryer of the utility model, the cylinder axial direction is arranged in juxtaposition said companion's thermic devices in the cylinder outer wall upper edge.

The auxiliary heating type steam rotary dryer that the utility model provides compared with prior art has following advantage: because existing steam rotary dryer only is provided with single heating element heater in drum is heat exchange tube assemblies; Water content was high, mobile poor when material to be dried got into cylinder from the cylinder feed end; Wall sticking phenomenon appears in inner wall of rotary drum, heat exchange tube assemblies outside easily; Hindered the exchange heat between material particles and the heat exchange tube assemblies; Reduced the heat exchange area of drying machine, reduced heat exchange efficiency, the production capacity of drying machine is reduced; Have corrosive material, glue the corrosion that cylinder barrel and heat exchange tube assemblies can be quickened in the wall position at inner wall of rotary drum and heat exchange tube assemblies outer wall, reduced the service life of cylinder and heat exchange tube assemblies, the apparatus maintenance cycle is shorter, and maintenance cost is high.The auxiliary heating type steam rotary dryer that the utility model provides; In keeping cylinder under the situation of heating element heater; Have additional cylindrical shell in the feed end zone of cylinder outer wall and accompany hot device; To improve the cylinder wall surface temperature, solve in the cylinder of the removable steam rotary dryer of existing independence that material fluidity is poor, heat exchange tube assemblies and cylinder service life is short, processing cost and maintenance cost are high, be prone to returning charge, leak problems such as material.Therefore, the auxiliary heating type steam rotary dryer that provides of the utility model has that material fluidity is good, the heat exchanger tube long service life of heat exchange tube assemblies, no returning charge leak characteristics such as material, maintenance time is long, the processing maintenance cost is low.

Description of drawings

Fig. 1 is the utility model auxiliary heating type steam rotary dryer structural representation;

Fig. 2 accompanies the cross-sectional view of hot implement body embodiment one for the utility model auxiliary heating type steam rotary dryer cylindrical shell;

Fig. 3 accompanies the structural representation of hot implement body embodiment one for the utility model auxiliary heating type steam rotary dryer cylindrical shell;

The C that Fig. 4 accompanies hot implement body embodiment one for the utility model auxiliary heating type steam rotary dryer cylindrical shell is to sketch map;

Fig. 5 accompanies

of hot implement body embodiment one to locate local enlarged diagram for the utility model auxiliary heating type steam rotary dryer cylindrical shell;

Fig. 6 accompanies the cross-sectional view of hot implement body embodiment two for the utility model auxiliary heating type steam rotary dryer cylindrical shell;

Fig. 7 accompanies the structural representation of hot implement body embodiment two for the utility model auxiliary heating type steam rotary dryer cylindrical shell;

The C that Fig. 8 accompanies hot implement body embodiment two for the utility model auxiliary heating type steam rotary dryer cylindrical shell is to sketch map;

The B that Fig. 9 accompanies hot implement body embodiment two for the utility model auxiliary heating type steam rotary dryer cylindrical shell is to sketch map;

Figure 10 accompanies hot device L-L direction schematic cross-section for the utility model auxiliary heating type steam rotary dryer cylindrical shell;

Figure 11 is that the utility model auxiliary heating type steam rotary dryer main steam distributor chamber is connected sketch map with straight tube;

Figure 12 locates enlarged diagram for the utility model auxiliary heating type steam rotary dryer main steam distributor chamber is connected

with straight tube;

Figure 13 locates enlarged diagram for the utility model auxiliary heating type steam rotary dryer main steam distributor chamber is connected

with straight tube;

Figure 14 is the utility model auxiliary heating type steam rotary dryer heat exchange tube assemblies structural representation;

Figure 15 locates enlarged diagram for the utility model auxiliary heating type steam rotary dryer heat exchange tube assemblies

;

Figure 16 is that the utility model auxiliary heating type steam rotary dryer lead screw assembly axis is to schematic cross-section;

Figure 17 is the utility model auxiliary heating type steam rotary dryer lead screw device right view;

Figure 18 is the utility model auxiliary heating type steam rotary dryer packing seal structure cut-away view.

Wherein, 1-main steam distributor chamber, 2-packing seal, 3-discharging sealing plate, 4-discharging cover, 5-cylinder

6-cylindrical shell is accompanied hot device 7-charging end plate 8-lead screw device 9-endless tube 10-jet chimney 11; 12-steam distribution chamber, 13-pipeline, 14-straight tube, 15-jet chimney

16- companion heat fixation plate, 17-adpting flange, 18-housing, 19-helical blade, 20-bolt, 24-heat exchange tube assemblies, 25-protective sleeve, 26-stuffing-box, 27-filler, 28-gland, 29,30-flange, 31-flexible pipe, 32-flange, 33-metal wound gasket, 34-screwed flange, 35-main steam distributor chamber fairlead, 36-heat tracing pipe road, 37-pillar, 40-companion thermic devices 45-rotating supporting device.

The specific embodiment

Below in conjunction with accompanying drawing and embodiment the utility model is described further, but not as the qualification to the utility model.

Referring to Fig. 1, Figure 14; The auxiliary heating type steam rotary dryer; Comprise columniform cylinder 5; Support and rotating supporting device 45 that head roll 5 rotates, the supporting mechanism of said rotating supporting device 45 be one group of support roller with cylinder 5 picking-ups, and its rotating mechanism is external power set and by the gear wheel on cylinder 5 outer walls of its driving; Main steam distributor chamber 1 is arranged on the outside and coaxial with cylinder 5 of cylinder 5 discharging sealing plates 3, and main steam distributor chamber 1 is used for the heat exchange tube assemblies 24 supply steam in cylinder and is used to discharge the condensate liquid that in steam pipe assembly 24, forms simultaneously.As the support and the rotating mechanism of cylinder 5, and as heat exchange tube assemblies in cylinder 24 supply steam and discharge main steam distributor chamber 1 mechanism of condensate liquid simultaneously, can use the setting described in the one Chinese patent application 200920020528 for example.This cylinder 5 has two ends; Be respectively that the end that is configured to accept material to be dried is a feed end, the end that is configured to discharge dried material is a discharge end; This feed end is provided with charging end plate 7; This discharge end is provided with discharging sealing plate 3, and discharging sealing plate 3 is outside equipped with main steam distributor chamber 1 and accepts the steam that extraneous transportation comes, and is provided with discharging cover 4 in the discharge end zone of the inboard cylinder 5 of discharging sealing plate 3; Discharging cover 4 is used for accepting and discharging dried material and tail gas; Be provided with in the cylinder 5 and a plurality ofly play the heat exchange tube assemblies 24 of rotation with one of which, each heat exchange tube assemblies 24 comprise two with the straight tube 14 of cylinder 5 axially parallels and between these two straight tubes 14 and be connected a plurality of endless tubes 9 that connect with these two straight tubes 14, and this a plurality of endless tube 9 is parallel to each other.As a kind of preferred implementation,

endless tube

9 and 14 vertical connections of two straight tubes.Straight tube 14 1 ends extend to outside the discharging sealing plate 3 and with main steam distributor chamber 1 and are communicated with; It is heat exchange tube assemblies 24 with endless tube 9 that the steam that main steam distributor chamber 1 provides gets into straight tube 14, and the condensed water that forms after steam in the heat exchange tube assemblies 24 and the material to be dried heat exchange is back to main steam distributor chamber 1 and discharge along straight tube 14; In the following specific embodiment one; Straight tube 14 all seals near an end of charging end plate 7; And in the following specific embodiment two, except that with straight tube 14 that jet chimney 15 is connected, other straight tube 14 that is not connected with jet chimney 15 all seals near an end of charging end plate 7.For improving the material fluidity in the cylinder 5, improve cylinder 5 wall surface temperatures, be provided with the cylindrical shell that is connected with heat exchange tube assemblies 24 at cylinder 5 outer walls near the feed end zone and accompany hot device 6, this cylindrical shell accompanies hot device 6 to rotate with cylinder 5.

Can be reached for steam rotary dryer cylinder 5 through following two kinds of versions the purpose that cylindrical shell is accompanied hot device 6 is set.

The specific embodiment one that the utility model provides; The auxiliary heating type steam rotary dryer; Referring to Fig. 1, Fig. 2, Fig. 3, Fig. 4, Fig. 5; Cylindrical shell accompanies hot device 6 to be made up of companion's thermic devices 40, the jet chimney 10 that connects this companion thermic devices 40 and heat exchange tube assemblies 24; Said companion's thermic devices 40 is by two

steam distribution chamber

11,12 and be connected these two steam distribution chamber 11, a plurality of parallel annular heat tracing pipes road 36 between 12 constitutes,

steam distribution chamber

11,12 preferred structures be closed at both ends and with the bigger straight tube of diameter of cylinder 5 axially parallels, annular heat tracing pipe road 36 is vertical the connection with the preferred syndeton of two steam distribution chamber 11,12.Annular heat tracing pipe shown in figure 10 road 36 is fixedly attached on the outer wall of cylinder 5 through companion's heat fixation plate 16, can be along arranging evenly on cylinder 5 circumferencial directions that a plurality of companion's heat fixation plates 16 are with enhanced stability.As shown in Figure 2; The quantity of companion's thermic devices 40 is two in the present embodiment; These two two groups of annular heat tracing pipe roads 36 of accompanying thermic devices 40 to have separately are and the concentric semicircular arc in cylinder 5 centers of circle to form the structure of a sub-circular after these two groups of semicircular arcs annular heat tracing pipe roads 36 closures, almost in a circumferential direction with cylinder 5 encirclements; Certainly; Cylindrical shell accompanies companion's thermic devices 40 of hot device 6 also can be one or more, can in a circumferential direction cylinder 5 all be surrounded or the part encirclement, and this is all within the inventive concept and protection domain of the utility model.Above-mentioned two companion's thermic devices 40 be a pair of, then when the length of cylinder 5 is longer, can on cylinder 5 axial directions, be arranged in juxtaposition many to accompanying thermic devices 40, so that obtain better dry materials effect.For jet chimney 10 is coupled together heat-exchanger rig 40 and heat exchange tube assemblies 24; As shown in Figure 4 in cylinder 5 feed end zones or cylinder 5 stage casing regional openings; Jet chimney 10 passes from this perforate that an end is connected with endless tube 9, the other end is connected with steam distribution chamber 11; Jet chimney 10 passes the steam distribution chamber 11 that the part steam in the endless tube 9 of heat exchange tube assemblies 24 is incorporated into companion's thermic devices 40 from this perforate; Steam is passed to steam distribution chamber 12 through heat tracing pipe road 36; Two two adjacent steam distribution chamber 12 of having separately of companion's thermic devices 40 as shown in Figure 9 are connected through the pipeline 13 of flexible metallic hose preferably, and steam produces condensed water through heat tracing pipe road 36 and cylinder 5 outer wall contact heat-exchangings, along with the rotation of drying machine; The condensed water that forms after the heat release flows to steam distribution chamber 11 next time in the gravity effect; And being back to heat exchanger tube endless tube 9 through jet chimney 10, heat tracing pipe shown in figure 10 road 36 is fixed on the cylinder 5 through companion's heat fixation plate 16, guarantees to rotate synchronously with cylinder 5; Two jet chimneys 10 that two heat-exchanger rigs 40 as shown in Figure 5 have separately are the adjacent to each other and extension in the same way that fits together before passing perforate entering cylinder 5 inside; These two near and the part straight tube 10 that extends that fits together in the same way be built in the pillar 37, pillar 37 is connected with cylinder 5 to be fixed, and is separately connected to separately on the endless tube 9 after these two straight tubes 10 extend pillar 37.

The specific embodiment two that the utility model provides; The auxiliary heating type steam rotary dryer; Referring to Fig. 1, Fig. 6, Fig. 7, Fig. 8, Fig. 9; Cylindrical shell accompanies hot device 6 to be made up of companion's thermic devices 40, the jet chimney 15 that connects this companion thermic devices 40 and heat exchange tube assemblies 24; Said companion's thermic devices 40 is by two

steam distribution chamber

11,12 preferred structures be closed at both ends and with the bigger straight tube of diameter of cylinder 5 axially parallels, annular heat tracing pipe road 36 is vertical the connection with the preferred syndeton of two steam distribution chamber 11,12.Annular heat tracing pipe shown in figure 10 road 36 is fixedly attached on the outer wall of cylinder 5 through companion's heat fixation plate 16, can be along arranging evenly on cylinder 5 circumferencial directions that a plurality of companion's heat fixation plates 16 are with enhanced stability.As shown in Figure 6; The quantity of companion's thermic devices 40 is two in the present embodiment; These two two groups of annular heat tracing pipe roads 36 of accompanying thermic devices 40 to have separately are and the concentric semicircular arc in cylinder 5 centers of circle to form the structure of a sub-circular after these two groups of semicircular arcs annular heat tracing pipe roads 36 closures, almost in a circumferential direction with cylinder 5 encirclements; Certainly; Cylindrical shell accompanies companion's thermic devices 40 of hot device 6 also can be one or more, can in a circumferential direction cylinder 5 all be surrounded or the part encirclement, and this is all within the inventive concept and protection domain of the utility model.Above-mentioned two companion's thermic devices 40 be a pair of, then when the length of cylinder 5 is longer, can on cylinder 5 axial directions, be arranged in juxtaposition many to accompanying thermic devices 40, so that obtain better dry materials effect.For jet chimney 15 is coupled together heat-exchanger rig 40 and heat exchange tube assemblies 24; Perforate on charging end plate 7 as shown in Figure 7; Jet chimney 15 passes from this perforate, and an end is connected with straight tube 14, the other end is connected with steam distribution chamber 11, the part steam in the straight tube 14 of heat exchange tube assemblies 24 is incorporated into the steam distribution chamber 11 of companion's thermic devices 40; Steam is passed to steam distribution chamber 12 through heat tracing pipe road 36; Two two adjacent steam distribution chamber 12 of having separately of companion's thermic devices 40 as shown in Figure 9 are connected through the pipeline 13 of flexible metallic hose preferably, and steam produces condensed water through heat tracing pipe road 36 and cylinder 5 outer wall contact heat-exchangings, along with the rotation of drying machine; The condensed water that forms after the heat release flows to steam distribution chamber 11 next time in the gravity effect; And be back in the heat exchanger tube straight tube 14 through jet chimney 15, heat tracing pipe road 36 is fixed on the cylinder 5 through companion's heat fixation plate 16, guarantees to rotate synchronously with cylinder 5.

Companion's thermic devices that the utility model provides has improved the barrel temperature, the material moisture evaporation that promotes to be dried, and the material fluidity in cylinder 5 feed ends strengthens; Corresponding material is excessive can be increased; Prevent the material spill over effect in order to improve, referring to Figure 16, Figure 17, the auxiliary heating type steam rotary dryer; Lead screw device 8 is installed at charging aperture place on the charging end plate 7 of cylinder 5 feed ends, can excessive material forced to push back in the cylinder 5.Can reach the purpose that lead screw device 8 is installed at auxiliary heating type steam rotary dryer charging aperture through following version: on charging end plate 7, open screwed hole; Charging aperture lead screw device 8 is connected through adpting flange 17 usefulness bolts 20 with charging end plate 7; Lead screw device 8 is made up of toroidal shell 18 and the many groups helical blade 19 that is welded on housing 18 inwalls; Lead screw device 8 rotates with cylinder 5 synchronously, and the rotation direction of helical blade 19 is identical with cylinder 5 direction of rotation for seeing from feed end, along with the rotation of cylinder 5; Under the promotion of helical blade 19; Excessive material is shifted onto in the dryer drum 5 again, and an end of lead screw device 8 stretches into suitable distance L certain in the dryer drum 5, can prevent simultaneously that material is excessive.

Referring to Figure 14, Figure 15, the auxiliary heating type steam rotary dryer, the endless tube 9 of heat exchange tube assemblies 24 adopts welding manner to be connected with straight tube 14, because the material that is dried has corrosivity, this welding position meeting serious wear after operation a period of time, tube wall attenuate.In order effectively to protect position while welding; Prolong 24 service lifes of heat exchange tube assemblies; The auxiliary heating type steam rotary dryer that the utility model provides; The connecting portion of heat exchange tube assemblies 24 endless tubes 9 and straight tube 14 adds protective sleeve 25 and carries out the protection of connector, and protective sleeve 25 is spoted weld endless tube 9 and straight tube 14, but the better protect position while welding.

Referring to Figure 18; The auxiliary heating type steam rotary dryer that the utility model provides; The outer straight tubes 14 of discharging cover 4 adopt packing seals 2 with discharging sealing plates 3, can reach packing seal 2 purposes through following version: with discharging sealing plate 3 and each corresponding around openings in straight tube 14 positions stuffing-box 26 of burn-oning, 14 of stuffing-box 26 and heat exchanger tube straight tubes are loaded filler 27; Compress filler 27 through gland 28, preferably resolve the material leakage problem.

Referring to Figure 11, Figure 12, Figure 13; The auxiliary heating type steam rotary dryer that the utility model provides; Main steam distributor chamber 1 is connected through metal hose 31 with straight tube 14, and flexible pipe 31 both ends respectively are provided with

flange

30,32, and main steam distributor chamber fairlead 35 ends are provided with flange 29; Straight tube 14 extends to discharging sealing plate 3 outer ends and is provided with screwed flange 34, is equipped with 33 sealings of metal wound gasket between flexible pipe 31 and straight tube 14 and the fairlead 35.Straight tube 14 is connected employing

flange

32 and 34 with metal hose 31 ends;

Flange

29 and 30 structures are adopted in main steam distributor chamber fairlead 35 ends and metal hose 31 the other end; Screwed flange 34 is adopted in heat exchanger tube straight tube 14 ends; Metal wound gasket 33 hermetically-sealed construction forms are all adopted in

flange

29 and 30,32 and 34 s' sealing; This version can solve the steam leakage of metal hose in the equipment running process 31 and main steam distributor chamber 1 and heat exchange tube assemblies straight tube 14 connecting portions, makes things convenient for heat exchange tube assemblies 24 maintenance simultaneously again.

The utility model has the following advantages compared with prior art:

1, adopts the version of steam rotary dryer cylindrical shell companion heat; When the material moisture that is dried is higher, can improve the barrel temperature, the material moisture evaporation promotes to be dried; Improve material fluidity; Eliminate the material wall sticking phenomenon, improve drying efficiency, reduce the corrosion of material exchange heat pipe assembly and inner wall of rotary drum.

2, adopt the version of charging aperture lead screw, when material is excessive, can excessive material forced to push back in the steam rotary dryer cylinder.

3, adopt the version of heat exchanger tube protective sleeve, the erosion of having avoided material directly to exchange heat pipe assembly welding position has prolonged the service life of heat exchange tube assemblies.

4, adopt outer heat exchanger tube straight tube of drying machine discharging cover and discharging sealing plate to adopt gland sealed version, avoided dried material to leak outside, improve the work on the spot environment from heat exchanger tube straight tube and discharging sealing plate gap.

5, adopt main steam distributor chamber and the version that the heat exchanger tube straight tube adopts flange to be connected, increased sealing surface, avoid reducing maintenance load because of the steam leakage that reason causes is installed.

Claims

1. auxiliary heating type steam rotary dryer; Comprise the cylinder (5) that is used for ccontaining material to be dried; Support the also rotating supporting device (45) of head roll (5) rotation; This cylinder (5) has feed end and two ends of discharge end, and this feed end is configured to accept material to be dried, and this discharge end is configured to discharge dried material; Said feed end is provided with charging end plate (7); Said discharge end is provided with discharging sealing plate (3) and discharging cover (4), be provided with in the cylinder (5) a plurality ofly to play the heat exchange tube assemblies (24) of rotation with one of which, each heat exchange tube assemblies (24) comprise two with the straight tube (14) of cylinder (5) axially parallel and be positioned between two straight tubes (14), be connected a plurality of endless tubes (9) that connect with two straight tubes (14); Each endless tube (9) is parallel to each other; Straight tube (14) extends to outside the discharging sealing plate (3) and with main steam distributor chamber (1) and is communicated with, and it is characterized in that: cylinder (5) outer wall is provided with the cylindrical shell that is connected perforation with heat exchange tube assemblies (24) near the feed end zone and accompanies hot device (6), and this cylindrical shell accompanies hot device (6) to rotate with cylinder (5).

2. a kind of auxiliary heating type steam rotary dryer according to claim 1; It is characterized in that: said cylindrical shell accompanies hot device (6) to comprise the jet chimney (10 of at least one companion's thermic devices (40), this companion's thermic devices (40) of connection and heat exchange tube assemblies (24); 15); Said companion's thermic devices (40) comprises two steam distribution chamber (11; 12) and be connected a plurality of parallel annular heat tracing pipes roads (36) between these two steam distribution chamber (11,12), said companion's thermic devices (40) is fixedly attached on cylinder (5) outer wall through companion's heat fixation plate (16).

3. a kind of auxiliary heating type steam rotary dryer according to claim 2; It is characterized in that: said jet chimney (10) one ends are connected with steam distribution chamber (11), and the other end passes cylinder (5) outer wall and is connected with the endless tube (9) of heat exchange tube assemblies (24).

4. a kind of auxiliary heating type steam rotary dryer according to claim 2; It is characterized in that: said jet chimney (15) one ends are connected with steam distribution chamber (11), and the other end passes charging end plate (7) and is connected with the straight tube (14) of heat exchange tube assemblies (24).

5. a kind of auxiliary heating type steam rotary dryer according to claim 2; It is characterized in that: said cylindrical shell accompanies hot device (6) to be provided with two companion's thermic devices (40); The heat tracing pipe road (36) of these two companion's thermic devices (40) is that central point is arranged with cylinder (5) center of circle, and pipeline (13) connects the steam distribution chamber (12) of these two companion's thermic devices (40).

6. a kind of auxiliary heating type steam rotary dryer according to claim 4; It is characterized in that: said cylindrical shell accompanies hot device (6) to be provided with two companion's thermic devices (40); The heat tracing pipe road (36) of these two companion's thermic devices (40) is that central point is arranged with cylinder (5) center of circle, and pipeline (13) connects the steam distribution chamber (12) of these two companion's thermic devices (40).

7. a kind of auxiliary heating type steam rotary dryer according to claim 3; It is characterized in that: said cylindrical shell accompanies hot device (6) to be provided with two companion's thermic devices (40); The heat tracing pipe road (36) of these two companion's thermic devices (40) is the center symmetric arrangement with cylinder (5) center of circle; Pipeline (13) connects the steam distribution chamber (12) of these two companion's thermic devices (40); Two jet chimneys (10) part of these two companion's thermic devices (40) reclines in the same way and extends and be built in the pillar (37), and pillar (37) is connected with cylinder (5) wall to be fixed.

8. according to the described a kind of auxiliary heating type steam rotary dryer of the arbitrary claim of claim 1 to 7; It is characterized in that: be connected with the lead screw device (8) that rotates synchronously with cylinder (5) on the said charging end plate (7); Said lead screw device (8) comprises toroidal shell (18) and is arranged on the many groups helical blade (19) on housing (18) inwall; The rotation direction of helical blade (19) is identical with cylinder (5) direction of rotation for seeing from feed end, and lead screw device (8) is positioned at the inwall that cylinder (5) one ends are stuck in charging end plate (7).

9. according to the described a kind of auxiliary heating type steam rotary dryer of the arbitrary claim of claim 1 to 7; It is characterized in that: said endless tube (9) is provided with protective sleeve (25) with straight tube (14) connecting portion, and protective sleeve (25) spot welding is connected on endless tube (9) and the straight tube (14).

10. according to the described a kind of auxiliary heating type steam rotary dryer of the arbitrary claim of claim 1 to 7; It is characterized in that: said discharging sealing plate (3) is provided with stuffing-box (26) with the around openings of each straight tube (14) opposite position; Load filler (27) between stuffing-box (26) and straight tube (14), gland (28) compresses filler (27).

11. according to the described a kind of auxiliary heating type steam rotary dryer of the arbitrary claim of claim 1 to 7; It is characterized in that: said main steam distributor chamber (1) adopts flange (29,30,32 with straight tube (14) through flexible pipe (31); 34) connect; Flexible pipe (31) both ends respectively are provided with flange (30,32), and main steam distributor chamber fairlead (35) end is provided with flange (29); Straight tube (14) extends to the outer end of discharging sealing plate (3) and is provided with screwed flange (34), is equipped with metal wound gasket (33) sealing between flexible pipe (31) and straight tube (14) and the fairlead (35).

12. according to the described a kind of auxiliary heating type steam rotary dryer of the arbitrary claim of claim 2 to 7, it is characterized in that: said companion's thermic devices (40) is arranged in juxtaposition at cylinder (5) outer wall upper edge cylinder (5) axial direction.