CN217094439U - Novel belt drive pulverized coal separator - Google Patents
Novel belt drive pulverized coal separator Download PDFInfo
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- CN217094439U CN217094439U CN202220415365.0U CN202220415365U CN217094439U CN 217094439 U CN217094439 U CN 217094439U CN 202220415365 U CN202220415365 U CN 202220415365U CN 217094439 U CN217094439 U CN 217094439U
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Abstract
A novel belt driven coal dust separator comprising: the coal dropping pipe assembly comprises a belt transmission device, an upper shell, a rotating part, a lower shell and a coal dropping pipe assembly, wherein the belt transmission device is arranged above the upper shell; the belt transmission device comprises a large belt pulley, a driving turntable, a bearing seat and a bearing; the large belt pulley and the outer ring of the bearing are installed in an interference fit mode, the inner ring of the bearing is fixedly connected to the bearing seat, the bearing seat is sleeved on the outer side of the rotating part and is fixedly connected to the upper shell, and the large belt pulley rotates around the bearing, so that the driving turntable is driven to rotate, and the rotating part is driven to rotate; the side end of the upper shell is connected with a four-way adjustable motor base device, and the small belt pulley is connected with an output shaft of the variable frequency motor; the lower end of the upper shell is connected with the upper end of the lower shell; the coal dropping pipe assembly sequentially penetrates through the belt transmission device, the upper shell and the lower shell. The utility model discloses a pulverized coal separator simple structure, convenient operation, it is simple and convenient to change the part, and sealing performance is outstanding.
Description
Technical Field
The utility model belongs to the technical field of fine coal powder separation among industrial applications such as electric power, cement, petrochemical industry, concretely relates to novel belt drive pulverized coal separator.
Background
At present, most of dynamic separators used in industrial applications such as electric petrochemical cement and the like are in a structure type of gear transmission and turntable bearing (a combined structure of a bearing and a gear), and although the gear transmission has higher motion precision, the belt transmission can completely meet the motion precision requirement of a separator rotor. And the gear drive and the turntable bearing drive structure have high requirements on the machining precision, including the gear box, the manufacturing cost is high, the gear and the rotary support are lubricated by oil immersion, the sealing requirement is high, the sealing of the transmission device comprises a rubber sealing element, the service life of the rubber sealing element is short, the replacement is frequent, the maintenance and repair period is short, the workload is large, and the cost is high.
Most of traditional belt transmission separators adopt a double-bearing supporting structure, a plurality of rubber sealing parts are adopted for sealing bearings, aging and failure are easy to occur under a high-temperature dust environment, the traditional belt transmission separators are similar to gear transmission, maintenance and overhaul are inconvenient, and maintenance cost is high.
In the gear transmission separator and the traditional double-bearing supporting belt transmission separator, the coal dropping pipe and the supporting flange are usually designed into an integral welding structure, so that the coal dropping pipe with the length of several meters needs to be drawn out from the top of the separator when a sealing element is replaced, the top overhauling space is insufficient, the whole separator needs to be detached and lifted away from original equipment to replace the sealing element, and the maintenance and the overhauling are inconvenient.
SUMMERY OF THE UTILITY MODEL
For solving exist not enough among the prior art, the utility model aims to provide a novel belt drive pulverized coal separator, under the prerequisite of effectively separating fine coal powder, can obviously reduce manufacturing cost, reduce the maintenance volume, the extension maintenance cycle.
The utility model adopts the following technical proposal:
a novel belt driven coal dust separator comprising: the coal dropping device comprises a belt transmission device, an upper shell, a rotating part, a lower shell and a coal dropping pipe assembly, wherein the belt transmission device is arranged above the upper shell; the belt transmission device comprises a transmission device outer cover, a large belt pulley, a driving turntable, a bearing seat and a bearing; the outer cover of the transmission device is fixedly connected to the upper shell, the large belt pulley and the outer ring of the bearing are installed in an interference fit mode, the inner ring of the bearing is fixedly connected to the bearing seat, the bearing seat is sleeved on the outer side of the rotating part and fixedly connected to the upper shell, the driving turntable is arranged above the large belt pulley and fixedly connected with the large belt pulley and the rotor hollow shaft of the rotating part through bolts, and the large belt pulley rotates around the bearing, so that the driving turntable is driven to rotate, and the rotating part is driven to rotate; the side end of the upper shell is connected with a four-direction adjustable motor base device, and the four-direction adjustable motor base device comprises a variable frequency motor and a small belt pulley; the small belt pulley is arranged on an output shaft of the variable frequency motor, and a belt is arranged between the small belt pulley and the large belt pulley and can provide power for the rotation of the rotating part; the lower end of the upper shell is connected with the upper end of the lower shell; the coal dropping pipe assembly sequentially penetrates through the belt transmission device, the upper shell and the lower shell.
As a preferred embodiment of the present invention, the rotating member includes a rotor and a rotor hollow shaft, and the rotor hollow shaft are disposed at the lower end portion and the outer side of the coal dropping pipe assembly.
As a preferred embodiment of the utility model, the outside of rotating part is provided with static blade, the downside of static blade is provided with back the powder awl, the lower tip that returns the powder awl still is provided with the sealed tuber pipe of annular grinding roller, the sealed tuber pipe of annular grinding roller passes the lower part casing and stretches to the external world.
As a preferred embodiment of the utility model, the rotor lower extreme is the toper structure, the conical upside portion of rotor is provided with the rotor hollow shaft, the rotor hollow shaft passes through the bolt and is connected with belt drive's drive carousel.
As a preferred embodiment of the present invention, the rotor is welded with moving blades inclined at a certain angle to form a squirrel cage, and the balance accuracy of the rotor reaches G1 level.
As a preferred embodiment of the utility model, the coal breakage pipe subassembly includes coal breakage pipe, support flange and the anti-flange of coal breakage pipe.
As an embodiment of the utility model, the design of the upper end of coal breakage pipe has the support boss of circumference equipartition, supports the boss and can hang in the recess of supporting flange.
As an embodiment of the present invention, the support flange is fixedly connected to the transmission housing, and the coal dropping pipe is disposed above the support flange.
As a preferred embodiment of the present invention, the lower end of the coal dropping pipe forms a gap seal with the rotor.
As an embodiment of the present invention, the lower end of the coal chute flange compresses the supporting platform convex step of the coal chute, and the upper end is connected to the coal chute of the coal feeder to the coal pulverizer.
As a preferred embodiment of the present invention, the upper casing includes a pulverized coal distribution box, a sealing air inlet pipe, a sealing plenum, and an upper axial labyrinth air seal ring.
As a preferred embodiment of the present invention, the upper side portion of the upper housing is a sealed plenum, the sealed plenum is connected with a sealed air inlet pipe, and the sealed plenum is connected with the pulverized coal distribution box through a partition plate.
As an embodiment of the present invention, the partition plate has a hole in the middle for holding the coal dropping pipe assembly, and an upper axial labyrinth air seal ring is disposed between the partition plate and the coal dropping pipe assembly.
As a preferred embodiment of the present invention, the four-way adjustable motor base device further includes a fixing base and an adjusting base.
As a preferred embodiment of the present invention, the fixing base is fixedly connected to the upper housing.
As a preferred embodiment of the present invention, the adjusting seat is disposed on the fixing seat.
As an embodiment of the present invention, the inverter motor is installed on the adjusting seat through the bolt, and the inverter motor adjusts the position of the inverter motor through the adjusting bolt on the adjusting seat.
As a preferred embodiment of the utility model, still be provided with the belt protection casing on belt lace wheel and the belt.
As a preferred embodiment of the present invention, the stationary blade and the return cone are integrally welded together.
As a preferred embodiment of the present invention, the stationary blade is twisted by a certain angle to form a squirrel cage welded inside the powder returning cone, and the number of the blades is the same as the number of the moving blades of the rotor.
Compared with the prior art, the beneficial effects of the utility model reside in that:
the utility model discloses a novel belt drive pulverized coal separator simple structure, convenient operation. The pulverized coal separator can effectively solve the problems of small top space of the separator, difficult extraction of the coal dropping pipe and the like; the design of the separated coal dropping pipe structure can ensure that the coal dropping pipe is not required to be drawn out from the top of the separator, the coal dropping pipe is directly separated from the supporting flange, and the coal dropping pipe is lowered into the mill, so that the belt wheel cover can be conveniently opened, and then the belt is replaced and other operations are carried out; the sealing wind and the zigzag labyrinth seal are adopted, the sealing combination type structure is simple, no abrasion is caused, the power consumption is low, the service life is long, and the lubrication and the maintenance are not needed; the sealed air inlet and the air chamber are both designed on the upper shell of the separator, the structure is compact, the sealed air enters the sealed air chamber of the upper shell from the sealed air pipe and then enters different sealed cavities, the arrangement form of multiple sealed air pipelines is eliminated, and the sealed air system of the separator is greatly simplified.
Drawings
Fig. 1 is a schematic structural composition diagram of a novel belt-driven pulverized coal separator of the present invention;
FIG. 2 is a schematic structural view of the novel belt transmission device of the present invention;
FIG. 3 is a schematic view of the upper housing structure of the separator;
FIG. 4 (a) is a schematic view of the separated coal dropping pipe and the supporting flange in a combined state;
FIG. 4 (b) is a schematic diagram of the separated coal dropping pipe and the supporting flange in a separated state;
FIG. 5 is a schematic structural view of a four-way adjustable motor base;
FIG. 6 is a separator seal schematic;
FIG. 7 is a schematic view of an example of the application of the present invention in a medium speed roller mill;
in the figure:
1-a belt transmission device; 2-an upper shell; 3-stationary blades; 4-a rotating member; 5-a lower housing; 6-a coal dropping pipe assembly; 7-belt protective cover; 8-a four-way adjustable motor base device; 9-sealing the air pipe by the annular grinding roller;
101-a transmission housing; 102-a large pulley; 103-driving the turntable; 104 a bearing seat; 105-a bearing;
201-pulverized coal distribution box; 202-sealing the wind inlet pipe; 203-sealing the air chamber; 204-upper axial labyrinth air seal ring;
401-a rotor; 402-rotor hollow shaft;
601-a coal dropping pipe; 602-a support flange; 603-a coal dropping pipe reverse flange;
801-fixing seat; 802-adjusting seat; 803-variable frequency motor; 804-Small pulley.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention clearer, the drawings in the embodiments of the present invention will be combined below to clearly and completely describe the technical solutions of the present invention. The embodiments described herein are only some embodiments of the present invention, and not all embodiments. All other embodiments obtained by those skilled in the art without creative efforts will fall within the protection scope of the present invention based on the spirit of the present invention.
Fig. 1 is the structure of the novel belt-driven pulverized coal separator of the present invention is schematically illustrated, if fig. 1 is shown, the novel belt-driven pulverized coal separator of the present invention mainly comprises a belt drive device 1, an upper casing 2, a rotating part 4, a lower casing 5 and a coal dropping pipe assembly 6.
The belt transmission device 1 is arranged above the upper shell 2, the upper end of a protective cover of the belt transmission device 1 is connected with the upper end part of the coal dropping pipe assembly 6, the belt transmission device 1 is further provided with a belt protective cover 7, the side end of the upper shell 2 is connected with a four-way adjustable motor base device 8, the lower side part of the coal dropping pipe assembly 6 penetrates through the upper shell 2 and extends into the lower shell 5, the outer side and the lower end part of the coal dropping pipe assembly 6 are further provided with a rotating part 4, the outer side of the rotating part 4 is provided with a static blade 3, the lower side of the static blade 3 is provided with a powder returning cone, the lower end part of the powder returning cone is further provided with an annular grinding roller sealing air pipe 9, and the annular grinding roller sealing air pipe 9 penetrates through the lower shell 5 and extends to the outside.
The belt transmission device 1 is designed in a modularized and serialized mode and is connected with the upper shell 2 through bolts, the same upper shell 2 can be provided with belt transmission devices with different transmission ratios, and the belt transmission device with a similar structure can be provided with bearings 105 of different types and belt pulleys of different sizes in a serialized mode according to the size of the rotor 401. The design has the coal powder distribution box 201, can improve the homogeneity of the coal powder of the powder outlet, and has the sealed air channel and cavity, the sealed air of the separator enters the upper sealed air chamber 203 through the upper sealed air pipe, and then leads to each cavity needing to be sealed. The sealing type of the transmission device is sealing wind plus labyrinth seal, and the sealing combination type structure is simple and practical. The variable frequency motor is arranged on a four-direction adjustable motor base device, and a belt can be very conveniently installed and tensioned.
Fig. 2 is a schematic structural diagram of the novel belt transmission device of the present invention, and as shown in fig. 2, the belt transmission device 1 includes a transmission device housing 101, a large belt pulley 102, a driving turntable 103, a bearing seat 104 and a bearing 105.
The transmission device shell 101 mainly protects the large belt pulley 102, supports the separable coal dropping pipe 6 and forms an upper labyrinth seal with the driving turntable 103. The large belt pulley 102 and the bearing outer ring are installed in an interference fit mode, the bearing 105 outer ring rotates, the inner ring does not rotate, the driving turntable 103 is connected with the large belt pulley 102 and the rotor hollow shaft 402 through bolts respectively, the rotating speed and the torque of the belt pulley are transmitted to the rotor 401, the driving turntable 103, the bearing seat and the transmission device shell 101 form a labyrinth seal, a lubricating grease cavity is formed by the driving turntable 103 and the bearing seat, lubricating grease is injected into the lubricating grease cavity through an oil cup on the driving turntable 103, and therefore the bearing 105 can be well lubricated.
The bearing 105 in the belt transmission device 1 is sealed by adopting only sealing air and labyrinth seal without a rubber sealing element, and because the internal environment of the coal mill is severe, the high-temperature air-powder mixture is high, the opening of the sealing air must be ensured before the coal mill is started to be supplied with primary hot air, and the sealing air pressure at each air seal gap is higher than the primary hot air pressure in the coal mill.
The bearing 105 can be in various types, different bearings can be selected according to the size of the separator, a standard deep groove ball bearing, a four-point contact bearing, a cylindrical roller bearing can be selected for a small separator, a single-row angular contact ball bearing and a single-row tapered roller bearing can also be used for the small separator, a large separator is used, a rotor is heavy and can be selected, the four-point contact bearing, the double-row angular contact ball bearing, the double-row tapered roller bearing, the four-row tapered roller bearing and the like can be used. The modular seriation design of the transmission device is only needed.
Fig. 3 is a schematic structural diagram of the upper shell of the separator, and as shown in fig. 3, the upper shell 2 comprises a pulverized coal distribution box 201, a sealing air inlet pipe 202, a sealing air chamber 203 and an upper axial air seal ring 204.
The upper side part of the upper shell 2 is provided with a sealing air chamber 203, the sealing air chamber 203 is connected with a sealing air inlet pipe 202, the sealing air chamber 203 is connected with a pulverized coal distribution box 201 through a partition plate, the middle part of the partition plate is provided with a hole for accommodating the coal dropping pipe assembly 6, and an upper axial labyrinth air seal ring 204 is arranged between the partition plate and the coal dropping pipe assembly 6.
The rotating part 4 comprises a rotor 401 and a hollow rotor shaft 402, and the rotor 401 and the hollow rotor shaft 402 are arranged at the lower end part and the outer side of the coal dropping pipe assembly 6.
The lower end of the rotor 401 is of a conical structure, the conical inclined surface can enable separated coarse coal powder to smoothly slide down, powder accumulation of the rotor 401 is avoided, a rotor blade which is inclined at a certain angle (the angle is preferably 45 degrees) and is in a squirrel cage shape is welded on the rotor 401, a hollow rotor shaft 402 is arranged on the conical upper side portion of the rotor 401, the hollow rotor shaft 402 is connected with a driving turntable 103 of a belt transmission device through bolts, the balance precision of the rotor 401 reaches G1 level, the unbalance of the rotor 401 is reduced as much as possible, and the stability of the rotor 401 is guaranteed.
The rotor 401 is driven by a variable frequency motor, the rotating speed of the rotor 401 can be adjusted in a stepless speed change manner under the control of the variable frequency motor, and the larger the rotating speed of the rotor 401 is, the larger the generated centrifugal force is, and the finer the separated coal powder is.
The coal chute assembly 6 includes a coal chute 601, a support flange 602, and a coal chute counter-flange 603.
The upper end of the coal dropping pipe 601 is provided with support bosses which are uniformly distributed on the circumference, the support bosses can be hung in grooves of the support flange 602, the support flange 602 is fixedly connected with the transmission device outer cover 101, a coal dropping pipe counter flange 603 is arranged above the support flange 602, the lower end of the coal dropping pipe 601 forms clearance seal with the rotor 401, the lower end of the coal dropping pipe counter flange 603 compresses a support platform convex step of the coal dropping pipe 601, and the upper end of the coal dropping pipe counter flange is connected with a coal dropping pipe section from a coal feeder to a coal mill.
The coal dropping pipe 601 and the supporting flange 602 are in a non-integrated welding structure, a tooth-shaped structure is designed on the inner side of the supporting flange 602 and the upper end of the coal dropping pipe 601, the coal dropping pipe 601 is inserted into the supporting flange 602 along gaps of supporting teeth of the supporting flange 602 and rotates for a certain angle, the supporting teeth on the coal dropping pipe 601 are arranged above the supporting teeth on the flange, so that the coal dropping pipe 601 is hung on the supporting flange 602, and the coal dropping pipe is tightly pressed by the reverse flange 603 of the coal dropping pipe.
Fig. 4 (a) and (b) are schematic views respectively showing the coal dropping pipe and the support flange in a coupled state and the coal dropping pipe and the support flange in a separated state.
Fig. 5 is a schematic structural diagram of a four-direction adjustable motor base, and as shown in fig. 5, the four-direction adjustable motor base device 8 includes a fixing base 801, an adjusting base 802, a variable frequency motor 803, and a small belt pulley 804.
The fixing seat 801 is fixedly connected to the upper housing 2, the adjusting seat 802 is arranged on the fixing seat 801, the variable frequency motor 803 is mounted on the adjusting seat 802 through a bolt, the position of the variable frequency motor 803 is adjusted on the adjusting seat 802 through the adjusting bolt by the variable frequency motor 803, and a small belt pulley 804 is arranged on an output shaft of the variable frequency motor 803.
The fixing seat 801 is welded on the upper shell 2 and fixed, the motor is combined on the adjusting seat through a bolt, and the small belt pulley 804 is installed on the motor shaft through a key and a gland. The motor can be adjusted up and down on the adjusting seat through the adjusting bolt, the adjusting seat can be adjusted front and back through the adjusting bolt, the motor seat is adjusted forward during the installation of the belt, the center distance of the belt wheels is reduced, and the belt is convenient to install. After the belt is installed, the motor base is adjusted backwards to tension the belt. The fine adjustment of the upper and lower parts enables the small belt pulley 804 and the large belt pulley 102 to be in the same horizontal plane, so that the belt is prevented from twisting, and power is better transmitted.
The static blade 3 and the powder return cone are of an integral welding structure, the static blade 3 is twisted by a certain angle to be welded on the inner side of the powder return cone in a squirrel cage shape, and the number of the blades is the same as that of the rotor 401.
Fig. 7 is a schematic diagram of an application example of the present invention in a medium speed roller coal mill, and fig. 7 is taken as an example for further explanation.
The primary mixed hot air enters a primary air chamber of the coal mill from a primary air port, forms rotary air through a rotary nozzle ring, forms an air-powder mixture with the milled fine coal powder, is primarily separated through a static blade along the flow direction shown in the figure, and returns to a milling area for re-milling through a powder returning cone after the coarse-particle coal powder collides with a static blade. The wind-powder mixture gets into the rotor separation region through the initial separation and the direction back of stator blade, and rotor speed passes through inverter motor control adjustment, and the rotational speed control range reaches 0 ~ 400rpm, and rotor speed is higher, and the centrifugal force that provides is big more, and the buggy that can pass through the rotor is more thin, and the coarse coal powder that does not pass through the rotor is through returning the interior awl of powder awl, gets back to the region of milling and mills again. Qualified fine coal powder enters the coal powder distribution box of the upper shell after passing through the rotor, and after the fine coal powder is mixed in the distribution box, the uniformity of the coal powder is improved, and then the fine coal powder flows out through the powder outlet.
Compared with the prior art, the beneficial effects of the utility model reside in that:
the utility model discloses a novel belt drive pulverized coal separator simple structure, convenient operation. The pulverized coal separator can effectively solve the problems of small top space of the separator, difficult extraction of the coal dropping pipe and the like; the design of the separated coal dropping pipe structure can ensure that the coal dropping pipe is not required to be drawn out from the top of the separator, the coal dropping pipe is directly separated from the supporting flange, and the coal dropping pipe is lowered into the mill, so that the belt wheel cover can be conveniently opened, and then the belt is replaced and other operations are carried out; the sealing wind and the zigzag labyrinth seal are adopted, the sealing combination type structure is simple, no abrasion is caused, the power consumption is low, the service life is long, and the lubrication and the maintenance are not needed; the sealed air inlet and the air chamber are both designed on the upper shell of the separator, the structure is compact, the sealed air enters the sealed air chamber of the upper shell from the sealed air pipe and then enters different sealed cavities, the arrangement form of multiple sealed air pipelines is eliminated, and the sealed air system of the separator is greatly simplified.
Finally, it should be noted that: the above embodiments are only used for illustrating the technical solutions of the present invention and not for limiting the same, and although the present invention is described in detail with reference to the above embodiments, those of ordinary skill in the art should understand that: modifications and equivalents of the embodiments of the invention may be made without departing from the spirit and scope of the invention, which should be construed as falling within the scope of the claims of the invention.
Claims (10)
1. A novel belt driven coal dust separator comprising: belt drive (1), upper portion casing (2), rotating member (4), lower part casing (5) and coal breakage pipe assembly (6), its characterized in that:
the belt transmission device (1) is arranged above the upper shell (2);
the belt transmission device (1) comprises a transmission device outer cover (101), a large belt pulley (102), a driving turntable (103), a bearing seat (104) and a bearing (105);
the transmission device comprises a transmission device outer cover (101), a large belt pulley (102), a bearing (105), a bearing seat (104), a driving turntable (103) and a rotating part (4), wherein the transmission device outer cover (101) is fixedly connected to an upper shell (2), the large belt pulley (102) and an outer ring of the bearing (105) are installed in an interference fit mode, an inner ring of the bearing (105) is fixedly connected to the bearing seat (104), the bearing seat (104) is sleeved on the outer side of the rotating part (4) and is fixedly connected to the upper shell (2), the driving turntable (103) is arranged above the large belt pulley (102) and is fixedly connected with the large belt pulley (102) and a rotor hollow shaft (402) of the rotating part (4) through bolts, the large belt pulley (102) rotates around the bearing (105), the driving turntable (103) is driven to rotate, and the rotating part (4) is driven to rotate;
a four-direction adjustable motor base device (8) is connected to the side end of the upper shell (2), and the four-direction adjustable motor base device (8) comprises a variable frequency motor (803) and a small belt pulley (804);
the small belt pulley (804) is mounted on an output shaft of the variable frequency motor (803), and a belt is arranged between the small belt pulley (804) and the large belt pulley (102) and can provide power for the rotation of the rotating part (4);
the lower end of the upper shell (2) is connected with the upper end of the lower shell (5);
the coal dropping pipe assembly (6) sequentially penetrates through the belt transmission device (1), the upper shell (2) and the lower shell (5).
2. The novel belt-driven pulverized coal separator as claimed in claim 1, wherein:
the rotating part (4) comprises a rotor (401) and a rotor hollow shaft (402), and the rotor (401) and the rotor hollow shaft (402) are arranged at the lower end part and the outer side of the coal dropping pipe assembly (6).
3. The novel belt-driven pulverized coal separator as claimed in claim 2, wherein:
the outer side of the rotating part (4) is provided with a static blade (3), the lower side of the static blade (3) is provided with a powder return cone, the lower end part of the powder return cone is also provided with an annular grinding roller sealing air pipe (9), and the annular grinding roller sealing air pipe (9) penetrates through the lower shell (5) and extends to the outside.
4. The novel belt-driven pulverized coal separator as claimed in claim 3, wherein:
the lower end of the rotor (401) is of a conical structure, a hollow rotor shaft (402) is arranged at the conical upper side part of the rotor (401), and the hollow rotor shaft (402) is connected with a driving turntable (103) of a belt transmission device through a bolt;
rotor blades which are inclined at a certain angle and are in a squirrel cage shape are welded on the rotor (401), and the balance precision of the rotor (401) reaches G1 level.
5. The novel belt-driven pulverized coal separator as claimed in claim 4, wherein:
the coal dropping pipe assembly (6) comprises a coal dropping pipe (601), a supporting flange (602) and a coal dropping pipe counter flange (603);
the upper end part of the coal dropping pipe (601) is provided with supporting bosses which are uniformly distributed on the circumference, and the supporting bosses can be hung in the grooves of the supporting flange (602);
the support flange (602) is fixedly connected with the transmission device outer cover (101), and a coal dropping pipe counter flange (603) is arranged above the support flange (602);
the lower end part of the coal dropping pipe (601) and the rotor (401) form clearance seal;
the lower end of the coal dropping pipe counter flange (603) compresses a supporting platform convex step of the coal dropping pipe (601), and the upper end of the coal dropping pipe counter flange is connected with a coal dropping pipe section from a coal feeder to a coal mill.
6. The novel belt-driven pulverized coal separator as claimed in claim 1, wherein:
the upper shell (2) comprises a pulverized coal distribution box (201), a sealing air inlet pipe (202), a sealing air chamber (203) and an upper axial labyrinth air seal ring (204).
7. The novel belt-driven pulverized coal separator as claimed in claim 6, wherein:
the upper side part of the upper shell (2) is provided with a sealing air chamber (203), the sealing air chamber (203) is connected with a sealing air inlet pipe (202), and the sealing air chamber (203) is connected with a pulverized coal distribution box (201) through a partition plate;
the middle part of the partition board is provided with a hole for accommodating the coal dropping pipe assembly (6), and an upper axial labyrinth air seal ring (204) is arranged between the partition board and the coal dropping pipe assembly (6).
8. The novel belt-driven pulverized coal separator as claimed in claim 1, wherein:
the four-direction adjustable motor base device (8) further comprises a fixed base (801) and an adjusting base (802);
the fixed seat (801) is fixedly connected to the upper shell (2);
the adjusting seat (802) is arranged on the fixing seat (801);
the variable frequency motor (803) is mounted on the adjusting seat (802) through a bolt, and the position of the variable frequency motor (803) is adjusted on the adjusting seat (802) through the adjusting bolt by the variable frequency motor (803).
9. The novel belt-driven pulverized coal separator as claimed in claim 8, wherein:
the small belt pulley (804) and the belt are also provided with a belt protective cover (7).
10. The novel belt-driven pulverized coal separator as claimed in claim 3, wherein:
the static blade (3) and the powder returning cone are of an integral welding structure;
the static blades (3) are twisted by a certain angle and welded on the inner side of the powder return cone in a squirrel cage shape, and the number of the blades is the same as that of the moving blades of the rotor (401).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220415365.0U CN217094439U (en) | 2022-02-28 | 2022-02-28 | Novel belt drive pulverized coal separator |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220415365.0U CN217094439U (en) | 2022-02-28 | 2022-02-28 | Novel belt drive pulverized coal separator |
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| CN217094439U true CN217094439U (en) | 2022-08-02 |
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| CN202220415365.0U Active CN217094439U (en) | 2022-02-28 | 2022-02-28 | Novel belt drive pulverized coal separator |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114392922A (en) * | 2022-02-28 | 2022-04-26 | 北京电力设备总厂有限公司 | Novel belt-driven pulverized coal separator and using method thereof |
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2022
- 2022-02-28 CN CN202220415365.0U patent/CN217094439U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114392922A (en) * | 2022-02-28 | 2022-04-26 | 北京电力设备总厂有限公司 | Novel belt-driven pulverized coal separator and using method thereof |
| CN114392922B (en) * | 2022-02-28 | 2024-03-01 | 北京电力设备总厂有限公司 | Novel belt-driven pulverized coal separator and application method thereof |
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