CN208871611U - A kind of material returning device - Google Patents

Abstract

The utility model discloses a kind of material returning devices, are related to returning charge equipment technical field, to solve the problems, such as that mechanical material returning device is easy to appear deformation under high temperature environment and causes card plug and invent in the prior art.A kind of material returning device of the utility model, including shell, rotation axis is equipped in the shell, impeller is arranged in the rotation axis of the shell intracorporal part, the first cavity is equipped in the blade of the impeller, the rotation axis is hollow shaft, and the inner cavity of the rotation axis is connected to the first cavity in the blade, through-hole in communication with the inner cavity is offered in the part rotation axis outside the shell, the through-hole with cooling pipe for being connected to.

Description

A kind of material returning device

Technical field

The utility model relates to returning charge equipment technical field more particularly to a kind of material returning devices.

Background technique

Coal clean utilization technology has circulating fluidized bed boiler and double-fluidized-bed gasification furnace, and two kinds of equipment are required to using returning charge Device realizes high-temperature material circulation, so that unreacted carbon is with high-temperature material, the iterative cycles in furnace are burnt and gasified, and increases Press the residence time of carbon.

Existing high-temperature material loopback has: non-mechanical material returning device and mechanical material returning device.Wherein, on-mechanical material returning device is with L For shape material returning device, one end of material returning device is connect by standpipe with gas-solid separator, and high-temperature material easily causes in material returning device The burning of carbon and cause slagging；Higher standpipe is needed to balance the pressure of whole system；The control precision of returning charge amount is relatively low. And mechanical material returning device can be to avoid the above problem, mechanical material returning device is control valve (such as moushroom valve), and mechanical material returning device passes through pipeline point It is not connect with gasification furnace, gas-solid separator, existing valve body generallys use metal material production, is easy to appear change under high temperature environment Shape, and the problem of lead to card plug.

Utility model content

The embodiments of the present invention provide a kind of material returning device, can solve in the prior art mechanical material returning device in high temperature ring The problem of being easy to appear deformation under border and causing card plug.

In order to achieve the above objectives, the embodiments of the present invention adopt the following technical scheme that

A kind of material returning device, including shell are equipped with rotation axis in the shell, are located at described in the intracorporal part of the shell and turn Fixing sleeve is equipped with impeller on moving axis, and the first cavity is equipped in the blade of the impeller, and the rotation axis is hollow shaft, the rotation The inner cavity of axis is connected to the first cavity in the blade, is offered in the part rotation axis outside the shell and institute The through-hole of inner cavity connection is stated, the through-hole with cooling pipe for being connected to.

Further, the outer wall of the impeller is equipped with the first high-temperature-resistant layer.

Further, the inner wall of the shell is equipped with the second high-temperature-resistant layer.

Further, the shell includes first shell and second shell, and the first shell is located at the second shell Outside, the second cavity is formed between the first shell and the second shell, is offered in the first shell and institute State the first inlet and the first liquid outlet of the connection of the second cavity.

Further, it is opened up on the shell there are two opposite opening, the opening is closed by plug, the plug On offer mounting hole, the both ends of the rotation axis are arranged in respectively in the mounting hole of two plugs, and the rotation axis End be located at the outside of the plug, the both ends of the rotation axis offer the through-hole.

Further, the plug includes the first wall and the second wall on the inside of first wall, first wall And second be formed with third cavity between wall, offers the second inlet and the second liquid outlet on first wall, described second Inlet, second liquid outlet are connected to the third cavity.

Further, the plug is connect with the shell flange.

It further, further include fluid slip ring, the rotor of the fluid slip ring and the rotation axis are sequentially connected, the stream The stator of body slip ring is fixedly connected with the cooling pipe.

Further, the section of the impeller radially is star.

Further, inlet port and outlet port are offered on the shell, the feed inlet, the discharge port are located at The radially opposite sides of the impeller.

Further, intercommunicating pore is offered in the rotation axis, the edge of the intercommunicating pore is respectively positioned on the of the blade In the entrance of the one cavity or edge of the intercommunicating pore is concordant with the inlet edge of the first cavity of the blade.

Further, the intercommunicating pore be it is multiple, multiple intercommunicating pores along the rotation axis circumferentially-spaced distribution and It is corresponded with multiple blades on the impeller.

Further, the width of the intercommunicating pore is the 1/6~1/16 of the length of the rotation axis circumferentially.

Further, the value range of the apex angle of the blade is 10 °~30 °.

It further, further include chain wheel driving mechanism and driving motor, the rotation axis passes through the chain wheel driving mechanism It is sequentially connected with the driving motor.

Further, it is fixed with bearing block on the shell, bearing, the rotation axis installation are installed in the bearing block In the bearing.

Impeller, and leaf is arranged on the partial turn axis being located in shell in material returning device provided by the embodiment of the utility model The first cavity in wheel is connected to the inner cavity of rotation axis, can will be located at through-hole and cooling pipe on the partial turn axis outside shell Connection, by cooling pipe to being passed through cooling water in rotation axis and blade, during high temperature returning charge, the wall of rotation axis and blade Face temperature is positively retained at lower range, reduces the deformation of the blade and rotation axis on impeller, avoids the occurrence of stuck issue.

Detailed description of the invention

In order to illustrate the embodiment of the utility model or the technical proposal in the existing technology more clearly, below will be to embodiment Or attached drawing needed to be used in the description of the prior art is briefly described, it should be apparent that, the accompanying drawings in the following description is only It is some embodiments of the utility model, for those of ordinary skill in the art, in the premise not made the creative labor Under, it is also possible to obtain other drawings based on these drawings.

Fig. 1 is one of the structural schematic diagram of the utility model embodiment material returning device；

Fig. 2 is the Section A-A figure of Fig. 1；

Fig. 3 is the structural schematic diagram of rotation axis in the utility model embodiment material returning device；

Fig. 4 is the partial sectional view of rotation axis and impeller in the utility model embodiment material returning device；

Fig. 5 is the second structural representation of the utility model embodiment material returning device.

Specific embodiment

The following will be combined with the drawings in the embodiments of the present invention, carries out the technical scheme in the embodiment of the utility model Clearly and completely describe, it is clear that the described embodiments are only a part of the embodiments of the utility model, rather than whole Embodiment.Based on the embodiments of the present invention, those of ordinary skill in the art are without making creative work Every other embodiment obtained, fall within the protection scope of the utility model.

In the description of the present invention, it should be understood that term " center ", "upper", "lower", "front", "rear", The orientation or positional relationship of the instructions such as "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outside" is based on attached drawing institute The orientation or positional relationship shown, is merely for convenience of describing the present invention and simplifying the description, rather than indication or suggestion is signified Device or element must have a particular orientation, be constructed and operated in a specific orientation, therefore should not be understood as to this is practical Novel limitation.

Referring to Fig.1~4, the material returning device of the utility model embodiment includes shell 1, and rotation axis 2, position are equipped in shell 1 It is equipped with impeller 3 in fixing sleeve on the partial turn axis 2 in shell 1, is equipped with the first cavity 32, rotation axis 2 in the blade 31 of impeller 3 For hollow shaft, the inner cavity of rotation axis 2 is connected to the first cavity 32 in blade 31, the partial turn axis 2 outside the shell 1 On offer the through-hole 21 being connected to inner cavity, the through-hole 21 with the first cooling pipe 100 for being connected to.

Impeller 3 is arranged in material returning device provided by the embodiment of the utility model on the partial turn axis 2 being located in shell 1, and The first cavity 32 in impeller 3 is connected to the inner cavity of rotation axis 2, can will be located at the through-hole 21 on the partial turn axis 2 outside shell 1 It is connected to the first cooling pipe 100, by the first cooling pipe 100 to cooling water is passed through in rotation axis 2 and blade 31, in high temperature During returning charge, the wall surface temperature of blade 31 and rotation axis 2 is positively retained at lower range, reduces 31 He of blade on impeller 3 The deformation of rotation axis 2, avoids the occurrence of stuck issue.

Further, the outer wall of impeller 3 is equipped with the first high-temperature-resistant layer 301 in one embodiment of the utility model, such as Fig. 2 It is shown, the thermal loss of high-temperature material is not only reduced, and high-temperature material can be reduced and directly contact blade 31 and cause deformation.

Similarly, the inner wall of shell 1 is equipped with the second high-temperature-resistant layer 104, the second high-temperature-resistant layer 104 in the utility model embodiment Shell 1 is separated with high-temperature material, to reduce the thermal loss of high-temperature material, and is further reduced high-temperature material to shell 1 influence, avoiding shell 1, deformation occurs.

Optionally, same material production can be used in the first high-temperature-resistant layer 301 and the second high-temperature-resistant layer 104, can also be used Different materials production.As the first high-temperature-resistant layer 301 and the second high-temperature-resistant layer 104 can be all made of high temperature ceramic material production, pottery The thermal coefficient of porcelain is poor, and wearability is preferable, can reduce high-temperature material to abrasion caused by shell 1, blade 31.

Optionally, referring to Fig.1, the shell 1 of the utility model embodiment material returning device includes first shell 11 and second shell 12, first shell 11 is located at the outside of second shell 12, and first shell 11 and the interval of second shell 12 are arranged, in first shell The second cavity 13 is formed between 11 and second shell 12, and the first inlet and the first liquid outlet are offered in first shell 11, the One inlet, the first liquid outlet are connected to the second cavity 13, can connect the liquid outlet of the first inlet and the second cooling pipe Logical, the first liquid outlet is connected to the inlet of the second cooling pipe, to the cooling water for being passed through circulation in shell 1；Or second The first cooling pipe is arranged in cavity 13, the both ends of the first cooling pipe connect with the first inlet, the first liquid outlet respectively, pass through Second cooling pipe is to the cooling water of circulation is passed through in the first cooling pipe, so that the wall surface temperature of shell 1 be made to maintain and second The close temperature of cooler-water temperature in cavity 13, so that being further reduced shell 1 generates deformation because of high-temperature material.

Specifically, it is opened up on above-mentioned shell 1 there are two opening 101, two openings 101 are oppositely arranged, and two openings 101 are It is closed by plug 4, mounting hole is offered on plug 4, the both ends of rotation axis 2 are arranged in respectively in the mounting hole of two plugs 4, And the end of rotation axis 2 is located at the outside of plug 4, the both ends of rotation axis 2 offer above-mentioned through-hole 21, a through-hole 21 and The liquid outlet of one cooling pipe 100 is connected to, another through-hole 21 is connected to the inlet of the first cooling pipe 100, such as Fig. 1 institute Show, the first cooling pipe 100 can be to the cooling water of injection circulation in rotation axis 2 and blade 31, so that blade 31 and rotation axis 2 Wall surface temperature is maintained at lower range.

Deformation occurs under high-temperature work environment for plug 4 in order to prevent, and referring to Fig.1, plug 4 includes the first wall 41 and second Wall 42, the second wall 42 is located at the inside of the first wall 41, the first wall 41 and the setting of the second wall 42 interval, in the first wall 41 and second It is formed with third cavity 43 between wall 42, the second inlet and the second liquid outlet, the second inlet, are offered on the first wall 41 Two liquid outlets are connected to third cavity 43, and the second inlet, the second liquid outlet are connected to third cooling pipe, and third is cold But pipeline is arranged with the second cooling pipe to being passed through in the coolant liquid or third cavity 43 of circulation in the third cavity 43 of plug 4, The both ends of second cooling pipe are connect with the second inlet, the second liquid outlet respectively, give the second cooling pipe by third cooling pipe It is inside passed through the cooling water of circulation, so that the wall surface temperature of plug 4 is also maintained at reduced levels.

Optionally, plug 4 is threadedly coupled or plug 4 and 1 flanged joint of shell with shell 1.In the utility model embodiment Plug 4 and 1 flanged joint of shell, as shown in Fig. 1~2, flanged joint has convenient disassembly, intensity high, good seal performance excellent Point.

Further, the material returning device of the utility model embodiment further includes fluid slip ring 5, the rotor of fluid slip ring 5 with turn Moving axis 2 is sequentially connected, and the stator of fluid slip ring 5 is fixedly connected with the first cooling pipe 100, as shown in Figure 1 and Figure 5, thus real The connection and sealing of existing rotation axis 2 and the mechanical connection and the two inner flow passage of cooling pipe.

Optionally, material returning device can be used there are many 3 forms of impeller, as wind wheel be it is centrifugal, for another example the section of impeller 3 be star Shape.The section of impeller is star in the utility model embodiment, can reduce impeller cavity volume, increases charge.

Based on the above embodiment, feed inlet 102 and discharge port 103, feed inlet 102 and discharge port 103 are offered on shell 1 The radially opposite sides of impeller 3 are located at, as shown in Fig. 1~2, material can be discharged out of material returning device rapidly by impeller.In addition, leaf Blade 31 on wheel 3 is along the circumferential direction evenly equipped with 4~8.

It should be understood that second shell 12 can be provided only at two openings 101, first charging aperture in first shell 11 102 and 103 are discharged out using high temperature resistants and wear-resistant material makes.

Optionally, intercommunicating pore 22 is offered in rotation axis 2, the edge of the intercommunicating pore 22 is located at the first cavity 32 of blade 31 Entrance in or intercommunicating pore 22 edge blade 31 the first cavity 32 inlet edge it is concordant, as shown in figs. 34, pass through Rotation axis 2 is connected to by intercommunicating pore 22 with blade 31.Section for impeller is star-shaped scheme, and above-mentioned intercommunicating pore 22 is strip Hole, strip hole are axially extending along rotation axis 2.

Based on the above embodiment, intercommunicating pore 22 be it is multiple, multiple intercommunicating pores 22 along rotation axis 2 circumferentially-spaced distribution, and Multiple intercommunicating pores 22 are connected to multiple blades 31 of impeller 3 one-to-one correspondence, and the flow velocity of coolant liquid is higher.

Further, if the width W of intercommunicating pore 22 be greater than rotation axis 2 circumferentially length 1/6, the width mistake of intercommunicating pore 22 Greatly, the structural strength of rotation axis 2 is influenced；If the width W of intercommunicating pore 22 be less than rotation axis 2 circumferentially length 1/16, intercommunicating pore 22 area is too small, and the flow of coolant liquid is too small, cooling capacity cannot be replenished in time to blade 31.Therefore, the utility model embodiment In middle rotation axis 2 width of intercommunicating pore 22 be rotation axis 2 circumferentially length 1/6~1/16.Optionally, the width of intercommunicating pore 22 It is 1/6,1/8,1/10,1/12,1/14 or the 1/16 of the length of rotation axis 2 circumferentially.

Further, in above-mentioned star-shaped impeller 3,31 section of blade is V-arrangement.If the angle of the apex angle of blade 31 is greater than 30 °, settable 31 negligible amounts of blade on impeller 3, discharge quantity is big, and control precision reduces；If the angle of the apex angle of blade 31 Less than 10 °, the first chamber capacity of blade 31 is too small, and the cooling liquid measure that can be accommodated is too small, is unfavorable for the fast cooling of blade 31. Therefore, the value range of the apex angle of blade 31 is 10 °~30 ° in the utility model embodiment.

Optionally, rotation axis 2 is process for steel pipe, and rotation axis 2 can be used welding manner with impeller 3 and connect, or uses Integrated molding mode is cast.

In addition, the flow velocity of control coolant liquid, can make blade 31 when rotating to unspecified angle, the first cavity in blade 31 32 have part not filled up by coolant liquid, are conducive to the discharge of gas in coolant liquid, avoid flow dead zone occur in blade 31.

It is to be noted that material returning device further includes chain wheel driving mechanism 6 and driving motor 7, rotation axis 2 is driven by sprocket wheel Mechanism 6 and driving motor 7 are sequentially connected, as shown in figure 5, chain wheel driving mechanism 6 is able to maintain accurate average ratios, rotation axis Pressure it is smaller, it is compact-sized, can work under the higher environmental condition of temperature.

Specifically, above-mentioned chain wheel driving mechanism 6 includes sprocket wheel 61 and the chain 62 being wound around on sprocket wheel 61, a sprocket wheel It is mounted in rotation axis 2, further includes speed reducer 8 between chain wheel driving mechanism 6 and driving motor 7, speed reducer 8 may include that gear passes Motivation structure, worm gearing and gear worm transmission mechanism.

In order to reduce the abrasion of rotation axis 2, bearing block 9, bearing block 9 are fixed in the utility model embodiment on shell 1 It is inside installed with bearing 10, rotation axis 2 is installed in bearing 10, reduces the friction system in 2 transmission process of rotation axis by bearing 10 Number, to reduce abrasion.

Above description is only a specific implementation of the present invention, but the protection scope of the utility model is not limited to In this, anyone skilled in the art within the technical scope disclosed by the utility model, can readily occur in variation Or replacement, it should be covered within the scope of the utility model.Therefore, the protection scope of the utility model should be with the power Subject to the protection scope that benefit requires.

Claims (14)

1. a kind of material returning device, which is characterized in that including shell, be equipped with rotation axis in the shell, it is intracorporal to be located at the shell Fixing sleeve is equipped with impeller in the rotation axis of part, and the first cavity is equipped in the blade of the impeller, and the rotation axis is hollow Axis, the inner cavity of the rotation axis are connected to the first cavity in the blade, the rotation axis of the part outside the shell On offer through-hole in communication with the inner cavity, the through-hole with cooling pipe for being connected to.

2. material returning device according to claim 1, which is characterized in that the outer wall of the impeller is equipped with the first high-temperature-resistant layer.

3. material returning device according to claim 1 or 2, which is characterized in that the inner wall of the shell is equipped with the second high-temperature-resistant layer.

4. material returning device according to claim 1, which is characterized in that the shell includes first shell and second shell, institute The outside that first shell is located at the second shell is stated, the second sky is formed between the first shell and the second shell Chamber offers the first inlet and the first liquid outlet being connected to second cavity in the first shell.

5. material returning device according to claim 1 or 4, which is characterized in that it is opened up on the shell there are two opposite opening, The opening is closed by plug, offers mounting hole on the plug, the both ends of the rotation axis are arranged in two institutes respectively It states in the mounting hole of plug, and the end of the rotation axis is located at the outside of the plug, the both ends of the rotation axis open up There is the through-hole.

6. material returning device according to claim 5, which is characterized in that the plug includes the first wall and is located at described the The second wall on the inside of one wall is formed with third cavity, offers second on first wall between first wall and the second wall Inlet and the second liquid outlet, second inlet, second liquid outlet are connected to the third cavity.

7. material returning device according to claim 5, which is characterized in that the plug is connect with the shell flange.

8. material returning device according to claim 1, which is characterized in that it further include fluid slip ring, the rotor of the fluid slip ring It is sequentially connected with the rotation axis, the stator of the fluid slip ring is fixedly connected with the cooling pipe.

9. material returning device according to claim 1, which is characterized in that the section of the impeller radially is star.

10. according to claim 1 or material returning device described in 9, which is characterized in that offer feed inlet and discharging on the shell Mouthful, the feed inlet, the discharge port are located at the radially opposite sides of the impeller.

11. material returning device according to claim 1, which is characterized in that offer intercommunicating pore, the connection in the rotation axis The edge in hole is respectively positioned on the first sky of in the entrance of the first cavity of the blade or edge of the intercommunicating pore and the blade The inlet edge of chamber is concordant.

12. material returning device according to claim 11, which is characterized in that the intercommunicating pore is multiple, multiple intercommunicating pores Along the rotation axis circumferentially-spaced distribution and on the impeller multiple blades correspond.

13. material returning device according to claim 11 or 12, which is characterized in that the width of the intercommunicating pore is the rotation axis The 1/6~1/16 of length circumferentially.

14. material returning device according to claim 9, which is characterized in that the value range of the apex angle of the blade be 10 °~ 30°。