CN214210163U - Water-coal-slurry stirrer - Google Patents
Water-coal-slurry stirrer Download PDFInfo
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- CN214210163U CN214210163U CN202022438052.0U CN202022438052U CN214210163U CN 214210163 U CN214210163 U CN 214210163U CN 202022438052 U CN202022438052 U CN 202022438052U CN 214210163 U CN214210163 U CN 214210163U
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Abstract
The utility model relates to a coal slurry production facility technical field discloses a coal slurry agitator, and it includes: the top of the stirring tank is provided with a feeding hole, and the bottom of the stirring tank is provided with a discharging hole; the stirring shaft is arranged in the stirring tank, and an upper impeller, a middle impeller and a lower impeller are sequentially arranged on the stirring shaft from top to bottom; the distance between the upper layer impeller and the discharge hole is 65-75% of the depth of the stirring tank, and the distance between the middle layer impeller and the discharge hole is 15-25% of the depth of the stirring tank; the distance between the lower impeller and the discharge hole is 5-15% of the depth of the stirring tank; the utility model discloses at the in-process of making coal slurry with buggy, water, additive stirring, the three-layer impeller stirs in coordination, makes buggy, water and additive each degree of depth homoenergetic at the agitator tank carry out intensive mixing, makes the coal slurry that has better mobility, and the coal slurry that stirs flows from the discharge gate to carry out subsequent hydrogen manufacturing process.
Description
Technical Field
The utility model relates to a coal slurry production facility technical field especially relates to a coal slurry agitator.
Background
The coal water slurry is an oil-substituted coal-based fluid fuel which is low in pollution, high in efficiency and capable of being conveyed by a pipeline, is obtained by physically processing about 65% of coal, 34% of water and 1% of additive, has the viscosity of 700-1000mPa & s and the material specific gravity of 1229kg/m at most3Solid content is as high as 91%; in the process of producing hydrogen by gasifying the coal water slurry, the coal water slurry needs to be poured into a coal slurry tank and stirred so as to maintain the stability (the coal water slurry is not layered and deposited) and the better fluidity (the viscosity is less than 1200mPa & s) of the coal water slurry; the existing coal water slurry stirrer is often provided with two layers of impellers on a stirring shaft for stirring, however, the problem of insufficient stirring exists when the two layers of impellers are arranged for stirring, partial coal water slurry can be deposited at the bottom of a coal slurry tank, the coal water slurry deposited at the bottom is gradually accumulated on the side wall of the coal slurry tank, the coal water slurry can cover a baffle of the side wall, the baffle loses the effect of increasing the turbulence effect during stirring, more coal water slurry can be precipitated, and local collapse is formed in the coal slurry tank, so that the water coal slurry outlet in the tank is blocked, finally, the stirrer is stopped due to serious deposition, the hydrogen production process of the stirrer is influenced, and the additional cost is increased.
SUMMERY OF THE UTILITY MODEL
The utility model aims at: aiming at the problem that the prior art is insufficient in stirring because the coal water slurry stirrer is provided with two layers of impellers for stirring, the stirrer capable of fully stirring the coal water slurry is provided.
In order to achieve the above object, the utility model provides a coal slurry stirrer, it includes: the top of the stirring tank is provided with a feeding hole, and the bottom of the stirring tank is provided with a discharging hole; the stirring shaft is arranged in the stirring tank, and an upper impeller, a middle impeller and a lower impeller are sequentially arranged on the stirring shaft from top to bottom; the distance between the upper layer impeller and the discharge hole is 65-75% of the depth of the stirring tank, and the distance between the middle layer impeller and the discharge hole is 15-25% of the depth of the stirring tank; the distance between the lower impeller and the discharge hole is 5% -15% of the depth of the stirring tank.
As a preferred scheme, the inner diameter of the stirring tank is 8000mm-9000mm, and the depth is 10000mm-12000 mm; the distance between the upper impeller and the discharge hole is 8000mm-9000 mm; the distance between the middle layer impeller and the discharge hole is 2000mm-3000 mm; the distance between the lower impeller and the discharge hole is 800mm-1200 mm.
Preferably, the upper impeller and the middle impeller are both three-blade propeller impellers, the diameter of the upper impeller is 2500mm-3000mm, and the diameter of the middle impeller is 3500mm-4000 mm.
Preferably, the middle-layer impeller comprises a blade, a balance wing is mounted on the blade, and the extension direction of the surface of the balance wing is the same as the axial extension direction of the stirring shaft.
Preferably, the lower impeller is a four-blade open turbine impeller, and the diameter of the lower impeller is 2500mm-2700 mm.
As a preferred scheme, a plurality of baffles for blocking the coal water slurry are further arranged on the side wall of the stirring tank, the baffles are arranged in a pairwise corresponding mode, and the width of the plate surface of each baffle is 400-500 mm.
As a preferred scheme, the outer surface of the bottom of the stirring tank is a spherical surface, and the discharge port is positioned in the center of the spherical surface; the depth of the spherical surface is one fourth to one third of the depth of the stirring tank, and the lower impeller is arranged in the depth range covered by the spherical surface.
Preferably, the baffle comprises a straight plate and an inclined plate, the straight plate is arranged on the side wall of the stirring tank, the upper end of the inclined plate is connected with the lower end of the straight plate, and the lower end of the inclined plate is connected with the bottom of the stirring tank.
As a preferable scheme, the stirring device also comprises a driving motor and a speed reducer, wherein the power output end of the driving motor is connected with the stirring shaft through the speed reducer; the driving motor and the speed reducer are installed at the top of the stirring tank.
Preferably, a bearing chamber is connected between the speed reducer and the stirring shaft.
The embodiment of the utility model provides a coal slurry stirrer compares with prior art, and its beneficial effect lies in:
in the utility model, the coal powder, water and additive are put into the stirring tank through the feed inlet; the stirring shaft is sequentially provided with an upper impeller, a middle impeller and a lower impeller from top to bottom, wherein the distance between the upper impeller and the discharge port is 65% -75% of the depth of the stirring tank, the distance between the middle impeller and the discharge port is 15% -25% of the depth of the stirring tank, and the distance between the lower impeller and the discharge port is 5% -15% of the depth of the stirring tank.
Drawings
FIG. 1 is a schematic structural diagram of a coal water slurry stirrer according to an embodiment of the present invention;
FIG. 2 is a schematic structural diagram of a driving motor of a coal water slurry stirrer according to an embodiment of the present invention;
in the figure, 1, a stirring tank; 11. spherical surface; 12. a discharge port; 2. a stirring shaft; 3. an upper impeller; 4. a middle-layer impeller; 41. a paddle; 42. a balance wing; 5. a lower impeller; 6. a baffle plate; 61. A straight plate; 62. a sloping plate; 7. a drive motor; 8. a speed reducer; 9. a bearing chamber.
Detailed Description
The following detailed description of the embodiments of the present invention is provided with reference to the accompanying drawings and examples. The following examples are intended to illustrate the invention, but are not intended to limit the scope of the invention.
In the description of the present invention, it should be understood that the terms "first", "second", and the like are used in the present invention to describe various information, but the information should not be limited to these terms, and these terms are only used to distinguish the same type of information from each other. For example, "first" information may also be referred to as "second" information, and similarly, "second" information may also be referred to as "first" information, without departing from the scope of the present invention.
As shown in fig. 1-2, a water-coal-slurry agitator according to a preferred embodiment of the present invention includes: the top of the stirring tank 1 is provided with a feeding hole, and the bottom of the stirring tank is provided with a discharging hole 12; the stirring shaft 2 is arranged in the stirring tank 1, and an upper-layer impeller 3, a middle-layer impeller 4 and a lower-layer impeller 5 are sequentially arranged on the stirring shaft 2 from top to bottom; the distance between the upper layer impeller 3 and the discharge hole 12 is 65-75% of the depth of the stirring tank 1, and the distance between the middle layer impeller 4 and the discharge hole 12 is 15-25% of the depth of the stirring tank 1; the distance between the lower impeller 5 and the discharge hole 12 is 5-15% of the depth of the stirring tank 1.
Based on the technical scheme, in the utility model, the pulverized coal, the water and the additive are put into the stirring tank 1 through the feed inlet; the stirring shaft 2 is sequentially provided with an upper impeller 3, a middle impeller 4 and a lower impeller 5 from top to bottom, wherein the distance between the upper impeller 3 and the discharge port 12 is 65-75% of the depth of the stirring tank 1, the distance between the middle impeller 4 and the discharge port 12 is 15-25% of the depth of the stirring tank 1, and the distance between the lower impeller 5 and the discharge port 12 is 5-15% of the depth of the stirring tank 1.
In this embodiment, the inner diameter of the stirring tank 1 is 8000mm to 9000mm, the depth is 10000mm to 12000mm, preferably, the distance between the upper impeller 3 and the discharge port 12 is 8000mm to 9000mm, the distance between the middle impeller 4 and the discharge port 12 is 2000mm to 3000mm, the distance between the lower impeller 5 and the discharge port 12 is 800mm to 1200mm, for example, when the inner diameter of the stirring tank 1 is 8500mm and the depth is 12000mm, the distance between the upper impeller 3 and the discharge port 12 is 8400mm to 8700mm, the distance between the middle impeller 4 and the discharge port 12 is 2450mm to 2600mm, and the distance between the lower impeller 5 and the discharge port 12 is 850mm to 1100mm, and the synergistic stirring effect among the upper impeller 3, the middle impeller 4 and the lower impeller 5 within this size range is the best.
The upper impeller 3 and the middle impeller 4 are both three-blade propeller impellers, namely a three-blade propeller stirrer, and the three-blade propeller stirrer is characterized by large circulation capacity and small power consumption, can rotate at high speed during stirring, and can force pulverized coal, water and additives to move along the axial extension direction of the stirring shaft 2 so that the pulverized coal, the water and the additives are fully mixed to prepare coal water slurry; in this embodiment, referring to the depth of the inner diameter of the stirring tank 1, it is preferable that the diameter of the upper layer impeller 3 is 2500mm to 3000mm, and the diameter of the middle layer impeller 4 is 3500mm to 4000mm, so that the stirring effect of the upper layer impeller 3 and the middle layer impeller 4 within the diameter range is the best; further, the middle-layer impeller 4 comprises a paddle 41, a balance wing 42 is installed on the paddle 41, the extending direction of the plate surface of the balance wing 42 is the same as the axial extending direction of the stirring shaft 1, when the middle-layer impeller 4 rotates and stirs, radial shearing force action can occur with coal powder and the like to cause the middle-layer impeller 4 to shake up and down, the balance wing 42 rotates along with the middle-layer impeller 4, the shaking frequency and shaking amplitude of the middle-layer impeller 4 can be reduced, the rotation of the middle-layer impeller 4 is more stable, and therefore the stirring effect of the middle-layer impeller 4 is guaranteed. The impeller 5 on the lower layer is a four-blade opening turbine impeller, namely a four-blade opening turbine stirrer, can rotate at high speed, generates large shearing force, can break fluid micelles formed by mixing coal powder, water and additives, and then fully mixes the broken small micelles, so that the coal water slurry keeps good fluidity, and the diameter of the impeller 5 on the lower layer is preferably 2500mm-2700mm in the embodiment.
In the embodiment, the side wall of the stirring tank 1 is also provided with a plurality of baffles 6 for blocking the coal water slurry, the baffles 6 are arranged in a pairwise corresponding manner, and the coal water slurry rotates in the stirring tank 1 along with the stirring operation to gradually form vortex, so that the mixing effect of the coal powder, the water and the additive is influenced, and the stirring is insufficient; the baffle 6 is arranged to prevent the coal water slurry from forming a vortex, and because the coal water slurry has a certain viscosity, the blocked coal water slurry and the unblocked coal water slurry move relatively, so that the two parts of the coal water slurry are sheared mutually in the stirring tank 1, so that the coal water slurry can be fully stirred in the stirring tank 1, and the width of the plate surface of the baffle 6 is preferably 400mm-500 mm.
In the embodiment, the outer surface of the bottom of the stirring tank 1 is a spherical surface 11, the discharge port 12 is positioned in the center of the spherical surface 11, the depth of the spherical surface 11 is one fourth to one third of the depth of the stirring tank 1, the lower impeller 5 is arranged in the depth range covered by the spherical surface 11, and the bottom of the side wall of the stirring tank 1 and the bottom of the stirring tank 1 are in circular arc transition, so that the stirred coal water slurry is conveniently gathered at the discharge port 12 and flows out from the discharge port 12; correspondingly, the baffle 6 comprises a straight plate 61 and an inclined plate 62, the straight plate 61 is installed on the side wall of the stirring tank 1, the upper end of the inclined plate 62 is connected with the lower end of the straight plate 61, the lower end of the inclined plate 62 is connected with the bottom of the stirring tank 1, the lower-layer impeller 5 is arranged in the depth range covered by the inclined plate 62, and the inclined plate 62 is used for preventing the coal water slurry from forming a vortex after being stirred by the lower-layer impeller 5.
The stirring device also comprises a driving motor 7 and a speed reducer 8, wherein the power output end of the driving motor 7 is connected with the stirring shaft 2 through the speed reducer 8; a driving motor 7 and a speed reducer 8 are installed at the top of the stirring tank 1. A bearing chamber 9 is connected between the speed reducer 8 and the stirring shaft 2, the power of the driving motor 7 is transmitted to the speed reducer 8, transmitted to the bearing chamber 9 through the speed reducer 8 and then transmitted to the stirring shaft 2 through the bearing chamber 9, and the stirring shaft 2 drives the upper impeller 3, the middle impeller 4 and the lower impeller 5 to rotate; in the embodiment, the bearing chamber 9 is arranged between the speed reducer 8 and the stirring shaft 2 for connection, and the bearing chamber 9 bears the radial force transmitted by the stirring shaft 2, so that the risk born by the speed reducer 8 when bearing the radial force is avoided; the present embodiment preferably drives the motor 7 with a power of 110 kw. The driving motor 7, the speed reducer 8 and the bearing chamber 9 are all installed at the top of the stirring tank 1, and can be installed by adopting a steel pipe frame in the prior art. The bearing chamber 9 may be of a construction known in the art, the specific construction and operating principle of which will not be described in detail here.
The utility model discloses a working process does:
the power output end of the driving motor 7 is connected with the speed reducer 8, the speed reducer 8 is connected with the stirring shaft 2 through the bearing chamber 9, and the driving motor 7 drives the speed reducer 8 and the bearing chamber 9 to operate in sequence to drive the stirring shaft 2 to rotate; the upper impeller 3, the middle impeller 4 and the lower impeller 5 on the stirring shaft 2 synchronously rotate to stir the coal powder, the water and the additive in the stirring tank 1 to prepare the coal water slurry, and the coal water slurry has better fluidity and can flow out from the discharge hole 12; the blades 41 of the middle-layer impeller 4 are provided with the balance wings 42, so that when the middle-layer impeller 4 rotates, the vibration frequency and amplitude of the middle-layer impeller 4 are reduced, and the rotation of the middle-layer impeller 4 is more stable; the baffle 6 can prevent the coal water slurry from forming vortex when rotating, so that the coal water slurry is stirred more fully.
To sum up, the embodiment of the utility model provides a coal slurry stirrer, its beneficial effect lies in:
in the utility model, the coal powder, water and additive are put into the stirring tank through the feed inlet; the stirring shaft is sequentially provided with an upper impeller, a middle impeller and a lower impeller from top to bottom, wherein the distance between the upper impeller and the discharge port is 65% -75% of the depth of the stirring tank, the distance between the middle impeller and the discharge port is 15% -25% of the depth of the stirring tank, and the distance between the lower impeller and the discharge port is 5% -15% of the depth of the stirring tank.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of modifications and replacements can be made without departing from the technical principle of the present invention, and these modifications and replacements should also be regarded as the protection scope of the present invention.
Claims (10)
1. A coal water slurry agitator, comprising:
the top of the stirring tank is provided with a feeding hole, and the bottom of the stirring tank is provided with a discharging hole;
the stirring shaft is arranged in the stirring tank, and an upper impeller, a middle impeller and a lower impeller are sequentially arranged on the stirring shaft from top to bottom; the distance between the upper layer impeller and the discharge hole is 65-75% of the depth of the stirring tank, and the distance between the middle layer impeller and the discharge hole is 15-25% of the depth of the stirring tank; the distance between the lower impeller and the discharge hole is 5% -15% of the depth of the stirring tank.
2. The coal water slurry stirrer according to claim 1, wherein the inner diameter of the stirring tank is 8000mm to 9000mm, and the depth is 10000mm to 12000 mm; the distance between the upper impeller and the discharge hole is 8000mm-9000 mm; the distance between the middle layer impeller and the discharge hole is 2000mm-3000 mm; the distance between the lower impeller and the discharge hole is 800mm-1200 mm.
3. The coal-water slurry stirrer according to claim 2, wherein the upper layer impeller and the middle layer impeller are three-blade propeller impellers, the diameter of the upper layer impeller is 2500mm-3000mm, and the diameter of the middle layer impeller is 3500mm-4000 mm.
4. The coal-water slurry stirrer according to claim 3, wherein the middle-layer impeller comprises a blade, a balance wing is mounted on the blade, and the extension direction of the plate surface of the balance wing is the same as the axial extension direction of the stirring shaft.
5. The coal-water slurry stirrer according to claim 2, wherein the lower impeller is a four-blade open turbine impeller, and the diameter of the lower impeller is 2500mm to 2700 mm.
6. The coal water slurry stirrer according to any one of claims 1 to 5, wherein a plurality of baffles for blocking the coal water slurry are further mounted on the side wall of the stirring tank, the baffles are arranged in a pairwise corresponding manner, and the width of the plate surface of each baffle is 400mm-500 mm.
7. The coal water slurry stirrer according to claim 6, wherein the outer surface of the bottom of the stirring tank is a spherical surface, and the discharge port is positioned in the center of the spherical surface; the depth of the spherical surface is one fourth to one third of the depth of the stirring tank, and the lower impeller is arranged in the depth range covered by the spherical surface.
8. The coal-water slurry stirrer according to claim 7, wherein the baffle comprises a straight plate and an inclined plate, the straight plate is arranged on the side wall of the stirring tank, the upper end of the inclined plate is connected with the lower end of the straight plate, and the lower end of the inclined plate is connected with the bottom of the stirring tank.
9. The coal-water slurry stirrer according to claim 1, further comprising a driving motor and a speed reducer, wherein the power output end of the driving motor is connected with the stirring shaft through the speed reducer; the driving motor and the speed reducer are installed at the top of the stirring tank.
10. The coal-water slurry stirrer according to claim 9, wherein a bearing chamber is connected between the speed reducer and the stirring shaft.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022438052.0U CN214210163U (en) | 2020-10-28 | 2020-10-28 | Water-coal-slurry stirrer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022438052.0U CN214210163U (en) | 2020-10-28 | 2020-10-28 | Water-coal-slurry stirrer |
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| Publication Number | Publication Date |
|---|---|
| CN214210163U true CN214210163U (en) | 2021-09-17 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022438052.0U Active CN214210163U (en) | 2020-10-28 | 2020-10-28 | Water-coal-slurry stirrer |
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| CN (1) | CN214210163U (en) |
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- 2020-10-28 CN CN202022438052.0U patent/CN214210163U/en active Active
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