CN216704990U - Needle coke particle size grading device - Google Patents
Needle coke particle size grading device Download PDFInfo
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- CN216704990U CN216704990U CN202123195087.7U CN202123195087U CN216704990U CN 216704990 U CN216704990 U CN 216704990U CN 202123195087 U CN202123195087 U CN 202123195087U CN 216704990 U CN216704990 U CN 216704990U
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Abstract
The utility model discloses a needle coke granularity grading device which comprises a blanking hopper arranged on the ground, wherein the bottom of the blanking hopper is communicated with a blanking chute inserted into the ground; the needle coke granularity grading device also comprises a bucket elevator and an underground belt, wherein a feeding hopper is arranged at the bottom of the bucket elevator, a discharging hopper is arranged at the top of the bucket elevator, the bottom of the discharging chute is positioned above the first end of the underground belt, and the feeding hopper is positioned below the second end of the underground belt; the first end of the discharge port belt of the bucket elevator is located below the discharge hopper, and the particle size screening mechanism is arranged below the second end of the discharge port belt of the bucket elevator. The needle coke can be classified according to the size of the particle size in the particle size screening mechanism, the utilization value of the needle coke is improved, the needle coke after particle size classification has a wider sales market, and the economic benefit of enterprises is improved.
Description
Technical Field
The utility model relates to the technical field of needle coke production equipment, in particular to a needle coke granularity grading device.
Background
Needle coke is a high-quality carbon material and is named because of a slender needle-shaped structure after being crushed. The needle coke is silver gray porous solid with metallic luster, has obvious flowing texture, large and few pores, is slightly elliptical, and has good orientation, electric conductivity and heat conductivity, so that the needle coke is a raw material for producing high-end carbon products such as ultrahigh power electrodes, special carbon materials, carbon fibers and composite materials thereof.
The device for producing the needle coke consists of three units, namely a raw material pretreatment unit, a coking unit and a calcining unit. Raw coke produced by the coking unit is placed still and dehydrated in the material operation station and then enters a raw material bin of the calcining unit, and then is conveyed into the rotary kiln to be calcined at the high temperature of 1380-1450 ℃, and the raw coke is calcined at the high temperature and then discharges moisture, volatile matters and the like, so that needle coke with good conductivity and high chemical stability is produced.
And a screening device is arranged at the top of the calcining unit finished product bin, and needle coke products are classified and stored according to particle sizes and are packaged separately. When the calcined equipment fails, the needle coke products can only be temporarily transferred to a waste bin for storage, and can not be classified and put into the bin after being screened, so that a large amount of needle coke which is not screened is stored and packaged in a mixed coke mode. Due to the fact that the needle coke is stored and packaged in a mixed coke mode, the use value of the needle coke is reduced, the sales of the needle coke is influenced, the economic benefit is reduced, and economic losses are brought to enterprises.
Disclosure of Invention
In order to overcome the defects, the utility model provides a needle coke granularity grading device which can grade needle coke according to the granularity, so that the utilization value of the needle coke is improved, the needle coke after granularity grading has a wider sales market, and the economic benefit of enterprises is improved.
In order to solve the technical problem, the needle coke granularity grading device comprises a blanking hopper arranged on the ground, wherein the bottom of the blanking hopper is communicated with a blanking chute inserted into the ground; the automatic blanking device is characterized by further comprising a bucket elevator and an underground belt, wherein a feeding hopper is arranged at the bottom of the bucket elevator, a discharging hopper is arranged at the top of the bucket elevator, the bottom of the blanking chute is positioned above the first end of the underground belt, and the feeding hopper is positioned below the second end of the underground belt; still carry quick-witted discharge gate belt including the fill, the first end that the quick-witted discharge gate belt was carried to the fill is located the below of ejection of compact hopper, the below of the second end that the machine discharge gate belt was carried to the fill is provided with the granularity screening mechanism.
Further, the particle size screening mechanism comprises a screening shell with an opening at the upper end, a sieve plate assembly is arranged in the screening shell, and the sieve plate assembly comprises two sieve plates which are sequentially arranged from top to bottom and are respectively a first sieve plate and a second sieve plate; the aperture of the sieve pore of the first sieve plate is larger than that of the sieve pore of the second sieve plate; the first sieve plate and the second sieve plate are obliquely arranged; the screening shell is provided with a first discharging hole for discharging screened materials of the first screening plate; a second discharge port for discharging materials screened by the second sieve plate is formed in the screening shell; and a third discharge hole for discharging the material passing through the second sieve plate is formed in the screening shell.
Further, a bin top belt I and a bin top belt II are arranged below the screening shell; the first bin top belt is located below the first discharge hole, and the second bin top belt is located below the second discharge hole.
Further, a first storage bin is arranged below the bin top belt I, a second storage bin is arranged below the bin top belt II, and a third storage bin is arranged below the screening shell.
Furthermore, the needle coke particle size grading device also comprises a dust removal device, the dust removal device comprises a dust removal mechanism and a dust inlet pipe assembly, the dust inlet pipe assembly comprises a dust inlet main pipe, a first dust inlet manifold, a second dust inlet manifold and a third dust inlet manifold, and the first dust inlet manifold, the second dust inlet manifold and the third dust inlet manifold are all communicated with the dust inlet main pipe; the dust inlet main pipe is communicated with the dust removing mechanism; the free end of the first dust inlet manifold is located at a belt of a discharge port of the bucket elevator, the free end of the second dust inlet manifold is located at the granularity screening mechanism, and the free end of the third dust inlet manifold is located at the first bin top belt and the second bin top belt.
Further, the free end of the first dust inlet manifold is in a bell mouth shape; the free end of the dust inlet manifold II is in a bell mouth shape; and the free end of the dust inlet manifold III is in a bell mouth shape.
Furthermore, the dust removing mechanism comprises a dust removing shell, the interior of the dust removing shell is partitioned into two mutually independent spaces which are respectively an air duct and a fan placing area and are located in the area range of the air duct, and a dust inlet hole communicated with the dust inlet main pipe is formed in the dust removing shell; a filter screen and a wind wheel are arranged in the air duct, and the filter screen is close to the dust inlet hole; and a fan is arranged in the fan placing area and connected with the wind wheel.
Furthermore, a dust collecting mechanism is arranged below the dust removing shell and comprises a dust collecting shell, and the dust collecting shell is fixedly connected below the dust removing shell; and the dust-leakage hole is arranged in the area range of the air duct and communicated with the interior of the dust collection shell.
Furthermore, the upper part of the dust collecting shell is wide and the lower part of the dust collecting shell is narrow, the lower end part of the dust collecting shell is contracted into a dust exhaust hole, and a movable door is arranged on the dust collecting shell; the dust collection device comprises a dust collection shell, and is characterized in that a dust removal assembly is arranged in the dust collection shell and comprises a linkage rod, one or more than one knocking hammer is arranged on the linkage rod, one end of the linkage rod is connected to the movable door, and the other end of the linkage rod is connected to the dust collection shell.
Furthermore, a dust collecting cylinder is connected at the dust exhaust hole and is clamped with the dust collecting shell.
After the technical scheme is adopted, the needle coke granularity grading device has the beneficial effects that the needle coke granularity grading device comprises a blanking hopper arranged on the ground, and the bottom of the blanking hopper is communicated with a blanking chute inserted into the ground; the needle coke granularity grading device also comprises a bucket elevator and an underground belt, wherein a feeding hopper is arranged at the bottom of the bucket elevator, a discharging hopper is arranged at the top of the bucket elevator, the bottom of the discharging chute is positioned above the first end of the underground belt, and the feeding hopper is positioned below the second end of the underground belt; the first end of the discharge port belt of the bucket elevator is located below the discharge hopper, and the particle size screening mechanism is arranged below the second end of the discharge port belt of the bucket elevator. The needle coke can be classified according to the size of the particle size in the particle size screening mechanism, the utilization value of the needle coke is improved, the needle coke after particle size classification has a wider sales market, and the economic benefit of enterprises is improved.
Drawings
FIG. 1 is a schematic view of the needle coke particle size classification apparatus of the present invention;
FIG. 2 is a schematic view of the dust removing apparatus of FIG. 1;
FIG. 3 is an enlarged schematic view of the dust removing mechanism of FIG. 2;
FIG. 4 is an enlarged schematic view of the dust collection mechanism of FIG. 2;
FIG. 5 is an enlarged schematic illustration of the screen assembly of FIG. 1;
in the drawings, the direction of the arrow indicates the flow direction of the dust;
in the figure: 1. a blanking hopper; 2. a support frame; 3. a bar valve; 4. a ground surface; 5. blanking chute; 51. a blanking slide carriage; 6. an underground belt; 7. a bucket elevator; 71. a feed hopper; 72. a discharge hopper; 8. a dust removal device; 81. a box body; 82. a dust removal mechanism; 821. a dust removal housing; 8211. a dust inlet hole; 8212. a dust leakage hole; 822. a filter screen; 823. a wind wheel; 824. a fan; 825. an air duct; 826. a fan placement area; 83. a dust collecting mechanism; 831. a dust collecting housing; 832. a movable door; 833. a dust collecting cylinder; 8341. a linkage rod; 8342. knocking hammers; 841. a dust inlet main pipe; 8411. a dust inlet main pipe connecting pipe; 8421. a first dust inlet manifold; 8422. a second dust inlet manifold; 8423. a dust inlet manifold III; 85. a dust collection housing support post; 86. a dust inlet main pipe support column; 9, a belt at a discharge hole of the bucket elevator; 10. a particle size screening mechanism; 101. a first sieve plate; 102. a second sieve plate; 103. a screening housing; 111. a first belt is arranged at the top of the bin; 112. a bin top belt II; 121. a first storage bin; 122. a second storage bin; 123. and a third storage bin.
Detailed Description
The utility model is further described with reference to the following figures and examples.
As shown in the figure 1, the needle coke granularity grading device comprises a discharging hopper 1 arranged on the ground 4, wherein the discharging hopper 1 is in an inverted quadrangular frustum pyramid shape, the side length of an opening at the top end of the discharging hopper 1 is 1.5m, the side length of an opening at the bottom end of the discharging hopper 1 is 0.3m, the side inclination angle is 75 degrees, the height is 1.2m, and the needle coke granularity grading device is manufactured by welding galvanized steel plates with the thickness of 4 mm. The ground 4 is fixedly provided with a support frame 2, the blanking hopper 1 is arranged on the support frame 2, the support frame 2 comprises four support legs with the height of 0.7m, and the support legs are DN40 steel pipes. The top end of the blanking hopper 1 is also provided with a cover plate (not shown in the figure), the side length of the cover plate is 1.52m, and the cover plate is made of galvanized steel plates with the thickness of 2mm, so that rainwater and sundries can be prevented from entering the cover plate when the cover plate is not used.
The bottom of the blanking hopper 1 is provided with a bar valve 3 for controlling the blanking speed to prevent material blockage. The bottom of the blanking hopper 1 is communicated with a blanking chute 5 inserted below the ground 4. The underground belt chamber is positioned below the ground 4, a blanking hole with the diameter of preferably 18cm is formed in the ground 4 at the top of the underground belt chamber, and a blanking chute 5 extends into the underground belt chamber to be positioned above an underground belt 6 through the blanking hole. The outlet of the blanking slide pipe 5 is provided with a blanking slide carriage 51, the blanking slide carriage 51 has the width of 30cm and the length of 50cm, is made of galvanized steel sheet, has the thickness of 4mm and is placed at an inclination angle of 45 degrees, and the blanking slide carriage 51 is placed at a certain inclination angle to prevent the materials from directly impacting the underground belt 6 during blanking.
The needle coke particle size classification device also comprises a bucket elevator 7. The bottom of the bucket elevator 7 is provided with a feeding hopper 71, the top of the bucket elevator 7 is provided with a discharging hopper 72, the bottom of the discharging chute 5 is positioned above the first end of the underground belt 6, and the feeding hopper 71 is positioned below the second end of the underground belt 6.
Needle coke particle size grading plant still includes bucket elevator discharge gate belt 9, and the first end of bucket elevator discharge gate belt 9 is located the below of ejection of compact hopper 72, and the below of the second end of bucket elevator discharge gate belt 9 is provided with particle size screening mechanism 10.
Shown jointly with fig. 1 and 5, granularity screening mechanism 10 includes the open screening casing 103 in upper end, is provided with the sieve subassembly in screening casing 103 inside, and the sieve subassembly includes two sieve boards that from top to bottom set gradually, is sieve one 101 and sieve two 102 respectively, and the aperture of the sieve mesh of sieve one 101 is greater than the aperture of the sieve mesh of sieve two 102. Both deck one 101 and deck two 102 are arranged in an inclined configuration. A first discharge hole for discharging materials screened by the first screen plate 101 is formed in the screening shell 103; a second discharge hole for discharging materials screened by the second screen plate 102 is formed in the screening shell 103; and a third discharge hole for discharging the materials passing through the second sieve plate 102 is formed in the sieving shell 103. The first discharge port, the second discharge port and the third discharge port are located on different side faces of the screening shell 103, and therefore mixing together during discharging of the discharge ports can be effectively prevented. The third outlet is preferably arranged at the bottom of the screening housing 103.
A bin top belt 111 and a bin top belt 112 are arranged below the screening shell 103; the first bin top belt 111 is located below the first discharge port, and the second bin top belt 112 is located below the second discharge port.
A first storage bin 121 is arranged below the first bin top belt 111, a second storage bin 122 is arranged below the second bin top belt 112, and a third storage bin 123 is arranged below the screening shell 103. The material discharged from the first discharge hole falls onto a first bin top belt 111 and further falls into a first storage bin 121 for storage; the material discharged from the second discharge hole falls onto the second bin top belt 112 and further falls into the second storage bin 122 for storage; and the material discharged from the discharge port III directly falls into the storage bin III 123 for storage.
As shown together with the figure 1 and the figure 2, the needle coke granularity grading device further comprises a dust removal device 8, the dust removal device 8 comprises a box body 81 with an open right end, a dust removal mechanism 82 is arranged in the box body 81, and the dust removal mechanism 82 is communicated with a dust inlet pipe assembly.
The dust inlet pipe assembly comprises a dust inlet main pipe 841, a first dust inlet manifold 8421, a second dust inlet manifold 8422 and a third dust inlet manifold 8423, wherein the first dust inlet manifold 8421, the second dust inlet manifold 8422 and the third dust inlet manifold 8423 are all communicated with the dust inlet main pipe 841. The bottom of the dust inlet main pipe 841 is fixedly connected to the inner bottom wall of the box body 81 through a dust inlet main pipe support column 86, and the dust inlet main pipe 841 is communicated with the dust removal mechanism 82; the free end of the first dust inlet manifold 8421 is located at the position of the discharge hole belt 9 of the bucket elevator, the free end of the second dust inlet manifold 8422 is located at the position of the granularity screening mechanism 10, and the free end of the third dust inlet manifold 8423 is located at the positions of the first bin top belt 111 and the second bin top belt 112.
The free end of the first dust inlet manifold 8421 is in a bell mouth shape; the free end of the dust inlet manifold II 8422 is in a bell mouth shape; the free end of the dust intake manifold III 8423 is flared. The flared structure facilitates the collection of dust.
As shown together with fig. 1, fig. 2, and fig. 3, the dust removing mechanism 82 includes a dust removing housing 821, the inside of the dust removing housing 821 is partitioned into two mutually independent spaces by a partition, which are respectively an air duct 825 and a fan placing area 826, and is located in an area range of the air duct 825, a dust inlet hole 8211 communicated with a dust inlet main pipe 841 is arranged on the dust removing housing 821, and a dust inlet main pipe connecting pipe 8411 communicated with the dust inlet main pipe 841 is inserted into the dust inlet hole 8211. A filter screen 822 and a wind wheel 823 are arranged in the air duct 825, and the filter screen 822 is arranged close to the dust inlet 8211; a fan 824 is arranged in the fan placing area 826, and the fan 824 is connected with the wind wheel 823.
As shown in fig. 1, 2, and 4, a dust collecting mechanism 83 is further disposed below the dust removing housing 821, the dust collecting mechanism 83 includes a dust collecting housing 831, the dust collecting housing 831 is fixedly connected to the inner bottom wall of the box 81 through a dust collecting housing support post 85, both the upper end and the lower end of the dust collecting housing 831 are open, and the upper end of the dust collecting housing 831 is fixedly connected below the dust removing housing 821. Located in the area of the air duct 825, the dust-collecting housing 821 is provided with a dust-leaking hole 8212, the dust-leaking hole 8212 is communicated with the inside of the dust-collecting housing 831, and the dust in the dust-collecting housing 821 falls into the inside of the dust-collecting housing 831 through the dust-leaking hole 8212.
The upper part of the dust collecting shell 831 is wide and the lower part is narrow, the lower end part is contracted into a dust exhaust hole, the dust exhaust hole is connected with a dust collecting cylinder 833, and the dust collecting cylinder 833 is preferably clamped with the dust collecting shell 831.
A movable door 832 is provided on the dust collection housing 831; a dust cleaning assembly is arranged in the dust collection housing 831, and the dust cleaning assembly includes a linkage 8341, one or more knocking hammers 8342 are arranged on the linkage 8341, one end of the linkage 8341 is connected to the movable door 832, and the other end of the linkage 8341 is connected to the inner wall of the dust collection housing 831. The knocking hammer 8342 is fixedly connected to the linkage rod 8341; alternatively, the striking hammer 8342 is hinged to the linkage 8341.
The process of classifying and storing needle coke of different particle sizes using the needle coke particle size classifying apparatus of the present invention is described in detail below:
needle coke with different particle sizes is mixed together and enters a blanking hopper 1, falls onto an underground belt 6 through a blanking chute 5, is conveyed to a feeding hopper 71 of a bucket elevator 7 through the underground belt 6, is lifted by the bucket elevator 7, is discharged onto a discharge port belt 9 of the bucket elevator 7 through a discharge hopper 72 of the bucket elevator 7, is conveyed to a particle size screening mechanism 10 through the discharge port belt 9 of the bucket elevator, is screened through a first sieve plate 101 and a second sieve plate 102 of a sieve plate assembly of the particle size screening mechanism 10, and is discharged out of a screening shell 103 through a first discharge port, a second discharge port and a third discharge port respectively, and the needle coke discharged through the first discharge port falls onto a first bin top belt 111 and finally falls into a first storage bin 121 for storage; the needle coke discharged from the discharge port II falls onto a bin top belt II 112 and finally falls into a storage bin II 122 for storage; and the needle coke discharged from the discharge port III falls into a storage bin III 123 for storage.
When the fan 824 of the dust removing mechanism 82 rotates the wind wheel 823, suction is generated, and dust raised during classification of needle coke of different particle sizes is collected into the dust inlet header pipe 841 through the first dust inlet manifold 8421, the second dust inlet manifold 8422, and the third dust inlet manifold 8423, and is finally sucked into the area where the air duct 825 of the dust removing housing 821 is located. The dust sucked into the dust removing housing 821 falls into the interior of the dust collecting housing 831 through the dust leakage hole 8212 of the dust removing housing 821 and finally falls into the dust collecting cylinder 833.
When dust is collected on the inner wall of the dust collection housing 831, an operator pulls the movable door 832 to drive the linkage 8341 of the dust removal assembly to move, and the knocking hammer 8342 arranged on the linkage 8341 knocks the inner wall of the dust collection housing 831 to knock off the dust on the inner wall of the dust collection housing 831, and finally fall into the dust collection cylinder 833.
When a certain amount of dust is collected in the dust collection cylinder 833, the operator removes the dust collection cylinder 833 from the dust collection housing 831 through the opening at the right side of the housing 81, and it is sufficient to remove the dust collection cylinder 833 from the dust collection housing 831 and remove it from the right side of the housing 81 because a gap is left between the bottom of the dust collection cylinder 833 and the inner bottom wall of the housing 81. The dust in the dust collecting cylinder 833 is poured into the discharging hopper 1 for subsequent grading treatment.
The technical features (such as the first sieve plate, the second sieve plate, the first discharge port, the second discharge port, the third discharge port, the first bin top belt, the second bin top belt, the first storage bin, the second storage bin, the third storage bin, the first dust inlet manifold, the second dust inlet manifold, the third dust inlet manifold, the first end and the second end) with serial number designations referred to in this specification are only for distinguishing the technical features, and do not represent the position relationship, the installation sequence, the working sequence and the like among the technical features.
In the description of the present specification, it is to be understood that the orientations or positional relationships described in the terms of "above", "below", "top-down", "inner wall", "inner bottom wall", "upper end", "lower end", "right side", "bottom", "top", and the like are based on the orientations or positional relationships shown in the drawings, and are only for convenience of describing the present invention and simplifying the description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and thus should not be construed as limiting the present invention.
The present invention is not limited to the above-described embodiments, and those skilled in the art will be able to make various modifications without creative efforts from the above-described conception, and fall within the scope of the present invention.
Claims (10)
1. The needle coke granularity grading device is characterized by comprising a blanking hopper arranged on the ground, wherein the bottom of the blanking hopper is communicated with a blanking chute inserted into the ground;
the automatic blanking device is characterized by further comprising a bucket elevator and an underground belt, wherein a feeding hopper is arranged at the bottom of the bucket elevator, a discharging hopper is arranged at the top of the bucket elevator, the bottom of the blanking chute is positioned above the first end of the underground belt, and the feeding hopper is positioned below the second end of the underground belt;
still carry quick-witted discharge gate belt including the fill, the first end that the quick-witted discharge gate belt was carried to the fill is located the below of ejection of compact hopper, the below of the second end that the machine discharge gate belt was carried to the fill is provided with the granularity screening mechanism.
2. The needle coke grading device according to claim 1, wherein the particle size sieving mechanism comprises a sieving shell with an open upper end, a sieve plate assembly is arranged in the sieving shell, and the sieve plate assembly comprises two sieve plates which are arranged from top to bottom in sequence, namely a sieve plate I and a sieve plate II; the aperture of the sieve pore of the first sieve plate is larger than that of the sieve pore of the second sieve plate; the first sieve plate and the second sieve plate are obliquely arranged; the screening shell is provided with a first discharging hole for discharging screened materials of the first screening plate; a second discharge hole for discharging materials screened by the second sieve plate is formed in the screening shell; and a third discharge hole for discharging the material passing through the second sieve plate is formed in the screening shell.
3. The needle coke particle size classification device of claim 2 wherein a first bin top belt and a second bin top belt are disposed below the screen housing; the first bin top belt is located below the first discharge hole, and the second bin top belt is located below the second discharge hole.
4. The needle coke particle size classification device of claim 3, wherein a first storage bin is arranged below the first bin top belt, a second storage bin is arranged below the second bin top belt, and a third storage bin is arranged below the screening shell.
5. The needle coke particle size classification device of claim 3 further comprising a dust removal device, said dust removal device comprising a dust removal mechanism and a dust inlet tube assembly, said dust inlet tube assembly comprising a dust inlet header, a first dust inlet manifold, a second dust inlet manifold, and a third dust inlet manifold, said first dust inlet manifold, said second dust inlet manifold, and said third dust inlet manifold all being in communication with said dust inlet header; the dust inlet main pipe is communicated with the dust removal mechanism; the free end of the first dust inlet manifold is located at a belt of a discharge port of the bucket elevator, the free end of the second dust inlet manifold is located at the granularity screening mechanism, and the free end of the third dust inlet manifold is located at the first bin top belt and the second bin top belt.
6. The needle coke particle size classification device of claim 5 wherein the free end of said first dust inlet manifold is flared; the free end of the dust inlet manifold II is in a bell mouth shape; and the free end of the dust inlet manifold III is in a bell mouth shape.
7. The needle coke particle size classification device of claim 5, wherein the dust removing mechanism comprises a dust removing housing, the dust removing housing is partitioned into two mutually independent spaces, namely an air duct and a fan placing area, and is located in the area range of the air duct, and the dust removing housing is provided with a dust inlet hole communicated with the dust inlet main pipe; a filter screen and a wind wheel are arranged in the air duct, and the filter screen is close to the dust inlet hole; and a fan is arranged in the fan placing area and connected with the wind wheel.
8. The needle coke particle size classification device of claim 7 wherein a dust collection mechanism is further disposed below the dust removal housing, the dust collection mechanism comprising a dust collection housing fixedly attached below the dust removal housing; and the dust-leaking hole is positioned in the area range of the air duct and communicated with the interior of the dust collection shell.
9. The needle coke particle size classifying device according to claim 8, wherein said dust collecting housing is wide at the top and narrow at the bottom, and the lower end is contracted to form a dust discharge hole, and a movable door is provided on said dust collecting housing; the dust collection device comprises a dust collection shell, and is characterized in that a dust removal assembly is arranged in the dust collection shell and comprises a linkage rod, one or more than one knocking hammer is arranged on the linkage rod, one end of the linkage rod is connected to the movable door, and the other end of the linkage rod is connected to the dust collection shell.
10. The needle coke particle size classification device of claim 9 wherein a dust collection cartridge is connected to said dust exhaust opening, said dust collection cartridge being snap-fitted to said dust collection housing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123195087.7U CN216704990U (en) | 2021-12-17 | 2021-12-17 | Needle coke particle size grading device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123195087.7U CN216704990U (en) | 2021-12-17 | 2021-12-17 | Needle coke particle size grading device |
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| CN216704990U true CN216704990U (en) | 2022-06-10 |
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| CN202123195087.7U Active CN216704990U (en) | 2021-12-17 | 2021-12-17 | Needle coke particle size grading device |
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2021
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