CN112377899A - Wear-resisting type buggy is thick or light separator - Google Patents
Wear-resisting type buggy is thick or light separator Download PDFInfo
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- CN112377899A CN112377899A CN202011403598.0A CN202011403598A CN112377899A CN 112377899 A CN112377899 A CN 112377899A CN 202011403598 A CN202011403598 A CN 202011403598A CN 112377899 A CN112377899 A CN 112377899A
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23D—BURNERS
- F23D1/00—Burners for combustion of pulverulent fuel
- F23D1/02—Vortex burners, e.g. for cyclone-type combustion apparatus
Abstract
The invention discloses a wear-resistant pulverized coal shade separation device which comprises a cylinder body, wherein wear-resistant ceramics are embedded in the cylinder body; the two cylinders are arranged and are symmetrically arranged side by side; the side surface of the top of the cylinder body is connected with a side surface elbow, and the side surface elbow is connected with a pulverized coal feeding hole; the top of the cylinder body is connected with two swirl regulators, and the two swirl regulators respectively control the pulverized coal flow of the two cylinder bodies; the lower end of the swirl regulator is provided with a guide vane, and the edge of the guide vane is provided with a U-shaped wear-resistant ceramic chip; a fixing frame is arranged on the periphery of the cylinder body, and reinforcing ribs are arranged on the fixing frame; the bottom of the cylinder body is also provided with a pulverized coal discharge port, and an M-shaped wear-resistant ceramic wafer is lined in the pulverized coal discharge port. The wear-resistant pulverized coal shade separation device has the characteristics of simple structure, good separation effect, high temperature resistance, wear resistance, long service life and the like, and can be widely applied to the field of combustion separators of power station boilers.
Description
Technical Field
The invention belongs to the technical field of thick and thin separation equipment of a boiler plant, and particularly relates to a wear-resistant coal powder thick and thin separation device.
Background
The coal powder concentration and dilution separating device is an important device of a power station boiler and is used for separating a mixture of air and powder and then sending the mixture into a hearth for combustion. The coal powder concentration and dilution separation device is washed by the air mixture, and the barrel is easy to wear through, so that the concentration and dilution separation effect of the coal powder is influenced to a great extent. Meanwhile, due to the serious abrasion of the combustion stabilizer, the concentration separation effect of the pulverized coal is greatly influenced, the problems of unstable pulverized coal supply, low burnout degree, low-load combustion stabilization capability and the like are caused, and therefore oil must be fed to realize combustion stabilization, so that the combustion cost is greatly increased, and the combustion efficiency of the boiler is lowered. Moreover, along with the reduction of the combustion efficiency, the combustion coking and slagging are serious, the high-temperature corrosion is more obvious, and a vicious circle is generated; thereby further aggravating the abrasion and erosion inside the pulverized coal concentration and dilution separation device and seriously influencing the normal operation of the combustor.
Patent number 201420826706.9 describes a concentration separation cyclone pulverized coal burner, which further processes the pulverized coal airflow guided to the center to separate the pulverized coal from the primary air as much as possible, so as to form high-efficiency concentration separation, and finally, the concentration separation effect is good; patent No. 201820396348.0 describes a tertiary air rich-lean separation burner, including rich-lean separator device and the separation over fire air burner, main burner that arrange on furnace, through air and fuel dual classification, use a certain amount of tertiary air powder as the technique of reductant reinforcing reducing zone to NOx reducing power, improve main burning zone and separation over fire air regional reducing power to NOx, guarantee the buggy fully burns in the over fire zone simultaneously, reduce flying dust carbon content, reduce NOx. The experimental research on the separation performance of the double-circulation cyclone separator (3 months in 2012 of chemical engineering) by the book of Wanshinxin and Wuran introduces that the separation efficiency of pulverized coal is improved by adopting a cone-shaped structure and matching 2 tangential air inlets. The above patents or documents all achieve high combustion rate and separation efficiency by changing the structure of the separator. In fact, in the actual production process, although the improvement and optimization of the structure can improve certain combustion efficiency, the separation efficiency of the separator barrel is greatly reduced (reduced by more than 50%) along with slagging and abrasion in later use. Therefore, the problem of abrasion and scouring of key parts such as an internal separator, a guide vane, a joint and the like is solved, the problems of poor coal powder separation effect, low combustion efficiency, poor low-load stable combustion capacity and the like are effectively solved, and meanwhile, the phenomenon of frequent maintenance in the later period is avoided.
Disclosure of Invention
In order to overcome the defects in the prior art, the invention aims to provide the wear-resistant pulverized coal concentration and dilution separation device which has the characteristics of simple structure, good separation effect, high temperature resistance, wear resistance, long service life and the like and can be widely applied to the field of combustion separators of power station boilers.
In order to achieve the above object of the present invention, the following technical solutions are adopted: a wear-resistant pulverized coal shade separation device comprises a cylinder body, wherein wear-resistant ceramics are embedded in the cylinder body; the two cylinders are arranged and are symmetrically arranged side by side; the side surface of the top of the cylinder body is connected with a side surface elbow, and the side surface elbow is connected with a pulverized coal feeding hole; the top of the cylinder body is connected with two swirl regulators, and the two swirl regulators respectively control the pulverized coal flow of the two cylinder bodies; the lower end of the swirl regulator is provided with a guide vane, and the edge of the guide vane is wrapped with a U-shaped wear-resistant ceramic wafer; a fixing frame is arranged on the periphery of the cylinder body, and reinforcing ribs are arranged on the fixing frame; the bottom of the cylinder body is also provided with a pulverized coal discharge port, and an M-shaped wear-resistant ceramic wafer is lined in the pulverized coal discharge port.
As an improvement, the wear-resistant ceramic is of a dovetail structure, a dovetail strip with a narrow lower part and a wide upper part is arranged at the bottom of the wear-resistant ceramic, and a stepped round hole welded by a stud is arranged in the middle of the wear-resistant ceramic.
As an improvement, the thickness of the wear-resistant ceramic is 10-30 mm, and the wear-resistant ceramic is fixed on the inner surface of the cylinder body in a dual mode of high-temperature inorganic binder and stud welding.
As an improvement, the upper end of the top of the cylinder body is also connected with an end face elbow, and the end face elbow is connected with an exhaust pipeline.
As an improvement, the side elbow is internally embedded with an integral wear-resistant ceramic sleeve.
As an improvement, L-shaped arc transition ceramics are embedded in the inner surface of the joint of the cylinder body and the side elbow.
As an improvement, the pulverized coal feed inlet is of a square structure, and the inner surface of the pulverized coal feed inlet is lined with wear-resistant ceramic.
As an improvement, the barrel is of a cylindrical connecting cone structure, the taper of the cone is 25-45 degrees, the barrel is obliquely arranged, and the included angle between the barrel and the vertical pulverized coal feeding hole is 3-10 degrees.
As an improvement, the thickness of the U-shaped wear-resistant ceramic wafer is 10-20 mm, and the material is Al2O3One of ceramic, SiC ceramic or ZTA ceramic.
As an improvement, a through dovetail groove is formed in the bottom of the M-shaped wear-resistant ceramic wafer, and the dovetail groove is of an inverted U-shaped structure with a small upper part and a large lower part.
The invention has the following beneficial effects: a wear-resistant pulverized coal shade separation device has the characteristics of simple structure, good separation effect, high temperature resistance, wear resistance, long service life and the like, and is structurally provided with parallel double cylinders for separation, so that the separation treatment capacity and the separation effect of pulverized coal are improved, the blockage is avoided, and the processing cost of a large-volume cylinder is reduced; the inner surface of the cylinder body is embedded with the wear-resistant ceramic, so that the scouring resistance and the corrosion resistance of the cylinder body are improved, and the smooth ceramic surface is not easy to slag; the U-shaped wear-resistant ceramic plates are arranged on the edges of the guide vanes which are easy to wear, so that the wear resistance of the guide vanes is greatly improved, and the separation efficiency of the shade separation device is ensured; in addition, the L-shaped arc transition ceramic is arranged at the joint of the cylinder body and the side elbow, so that the joint is not easy to wear through, and frequent cleaning of the separation device is avoided; the M-shaped wear-resistant ceramic plate is arranged in the discharge hole of the cylinder body, so that the M-shaped wear-resistant ceramic plate is better fixed on the inner wall of the circular protection discharge hole, and the wear resistance of the cylinder body is improved; through the wear-resistant protection of each main part of the pulverized coal concentration and dilution separation device, the problems of abrasion, serious slag bonding and the like of the separation device caused by the scouring and abrasion of high-temperature pulverized coal in later-stage production work are effectively solved, the barrel is ensured to be always in a state during the just production, and the problems of low separation efficiency, low combustion efficiency, low-load stable combustion capacity and the like are effectively solved.
In the use process of the wear-resistant pulverized coal shade separation device, the unique double-cylinder structure improves the separation efficiency of pulverized coal, and simultaneously reduces the production cost of the cylinder with the same treatment capacity; wear-resistant ceramic linings with different structures are used at each joint of the cylinder body, and the high-temperature inorganic binder and the stud welding process are matched, so that the wear-resistant ceramic is firmly embedded on the inner surface of the cylinder body, the wear-resistant performance of the separating device is greatly improved, and the stability of the separating efficiency, the combustion rate and other performances of the separating device is favorably ensured. Therefore, the wear-resistant pulverized coal concentration and dilution separation device is particularly suitable for the application field of power plant boiler burners, and the wear-resistant ceramic sheet lining can also be suitable for burner devices with different structures, such as horizontal concentrated pulverized coal burners, horizontal concentrated and diluted air pulverized coal separators, radial concentrated and diluted rotational flow pulverized coal burners and the like.
Drawings
FIG. 1 is a front view of the wear-resistant pulverized coal concentration and dilution separating device of the present invention;
FIG. 2 is a side view of the wear-resistant pulverized coal concentration and separation apparatus of the present invention;
FIG. 3 is a top view of the wear-resistant pulverized coal concentration and dilution separating device of the present invention;
FIG. 4 is a schematic view of the construction of the wear-resistant ceramic lining of the cartridge of the present invention;
FIG. 5 is a schematic view of the U-shaped wear-resistant ceramic lining of the guide vane of the present invention;
FIG. 6 is a schematic view of the structure of the M-shaped wear-resistant ceramic lining of the discharge port of the present invention;
FIG. 7 is a schematic view of the structure of the L-shaped arc transition ceramic lining at the joint of the present invention.
In the figure: 1. a barrel; 2. wear-resistant ceramics; 3. a side elbow; 4. a pulverized coal feed inlet; 5. a swirl regulator; 6. a guide vane; 7. u-shaped wear-resistant ceramic plates; 8. a fixed mount; 9. reinforcing ribs; 10. a pulverized coal discharge port; 11. m-type wear-resistant ceramic plates; 12. an end face elbow; 13. l-shaped arc transition ceramic; 21. a stepped circular hole.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments, and it should be noted that any combination of the embodiments or technical features described below can be used to form a new embodiment without conflict.
As shown in fig. 1 to 7, the wear-resistant pulverized coal concentration and dilution separation device comprises a cylinder body 1, wherein wear-resistant ceramics 2 are embedded in the cylinder body 1; two cylinders 1 are arranged and are symmetrically arranged side by side; the side surface of the top of the cylinder body 1 is connected with a side surface elbow 3, and the side surface elbow 3 is connected with a pulverized coal feeding port 4; the top of the cylinder body 1 is connected with two swirl regulators 5, and the two swirl regulators 5 are used for respectively controlling the flow distribution of the pulverized coal in the two cylinder bodies 1; the lower end of the swirl regulator 5 is provided with a guide vane 6, and the edge of the guide vane 6 is wrapped with a U-shaped wear-resistant ceramic plate 7; a fixing frame 8 is arranged on the periphery of the cylinder body 1, and reinforcing ribs 9 are arranged on the fixing frame; the novel coal dust collector is characterized in that a coal dust discharge port 10 is further formed in the bottom of the barrel body 1, an M-shaped wear-resistant ceramic wafer 11 is lined inside the coal dust discharge port 10, a through dovetail groove is formed in the bottom of the M-shaped wear-resistant ceramic wafer 11, and the dovetail groove is of an inverted U-shaped structure with a small upper portion and a large lower portion.
As a further embodiment, the wear-resistant ceramic 2 is of a dovetail structure, a dovetail strip with a narrow lower part and a wide upper part is arranged at the bottom, and a stepped round hole 21 for stud welding is arranged in the middle; specifically, the thickness of the wear-resistant ceramic 2 is 10-30 mm, and the wear-resistant ceramic is fixed on the inner surface of the cylinder body 1 in a high-temperature inorganic binder and stud welding dual mode.
As a further embodiment, the top upper end of the cylinder 1 is further connected with an end surface elbow 12, the end surface elbow 12 is connected with an exhaust pipeline and is responsible for discharging the separated gas out of the burner, and the separated high-concentration pulverized coal enters the combustion furnace from the pulverized coal discharge port 10 at the bottom for high-temperature combustion.
As a further implementation mode, an integral wear-resistant ceramic sleeve is embedded in the side elbow 3, so that the wear resistance of the elbow can be improved; specifically, the integral wear-resistant ceramic sleeve is made of Al2O3One of ceramic or SiC ceramic is formed by isostatic pressing and then sintering at high temperature, and a pouring layer is arranged between the integral wear-resistant ceramic sleeve and the side elbow 3, so that the combination effect of the integral wear-resistant ceramic sleeve and the side elbow 3 is improved.
In a further embodiment, an L-shaped arc transition ceramic 13 is embedded on the inner surface of the joint of the cylinder body 1 and the side elbow 3, so that the joint is prevented from being abraded, and the service life of the separating device is prevented from being influenced.
As a further implementation mode, the coal powder feeding hole 4 is of a square structure, the inner surface of the coal powder feeding hole is lined with the wear-resistant ceramic 2, feeding of the square feeding hole is more convenient, and feeding efficiency is higher.
As a further implementation mode, the cylinder body 1 is of a cylindrical connecting cone structure, the taper of the cone is 25-45 degrees, the cylinder body 1 is arranged in an inclined mode, the included angle between the cylinder body 1 and the vertical pulverized coal feeding hole 4 is 3-10 degrees, the separation path can be prolonged through the inclined arrangement, and the purpose of improving the separation efficiency is achieved.
As a further implementation mode, the thickness of the U-shaped wear-resistant ceramic plate 7 is 10-20 mm, and the material is Al2O3The Rockwell hardness HRC of the ceramic, the SiC ceramic or the ZTA ceramic can reach more than 85, thereby ensuring that the guide vane has excellent wear resistance.
Example 1:
the wear-resistant pulverized coal shade separation device comprises a cylinder body 1, wherein the cylinder body 1 is of a cylindrical connection cone structure, the taper of a cone is 25 degrees, the cylinder body 1 is obliquely arranged, and the included angle between the cylinder body 1 and a vertical pulverized coal feed inlet 4 is 3 degrees; the inner part of the cylinder body 1 is embedded with wear-resistant ceramic 2, the wear-resistant ceramic 2 is of a dovetail structure, a dovetail strip with a narrow lower part and a wide upper part is arranged at the bottom, and a stepped round hole 21 for stud welding is arranged in the middle; specifically, the wear-resistant ceramic 2 is 10mm thick and is fixed on the inner surface of the cylinder 1 in a dual mode of high-temperature inorganic binder and stud welding; two cylinders 1 are arranged and are symmetrically arranged side by side; the side surface of the top of the cylinder body 1 is connected with a side surface elbow 3 embedded with an integral wear-resistant ceramic sleeve, the side surface elbow 3 is connected with a pulverized coal feed inlet 4, specifically, the pulverized coal feed inlet 4 is of a square structure, and the inner surface of the pulverized coal feed inlet is lined with wear-resistant ceramic 2; l-shaped arc transition ceramics 13 are embedded in the inner surface of the joint of the cylinder body 1 and the side elbow 3; the top of the cylinder body 1 is connected with two swirl regulators 5, and the two swirl regulators 5 are used for respectively controlling the flow distribution of the pulverized coal in the two cylinder bodies 1; the lower end of the swirl regulator 5 is provided with a guide vane 6, the edge of the guide vane 6 is wrapped by a U-shaped wear-resistant ceramic plate 7, the thickness of the U-shaped wear-resistant ceramic plate 7 is 10mm, the material is 95 aluminum oxide ceramic, and the Rockwell hardness HRC is 90; the upper end of the top of the cylinder body 1 is also connected with an end surface elbow 12, and the end surface elbow 12 is connected with an exhaust pipeline; a fixing frame 8 is arranged on the periphery of the cylinder body 1, and reinforcing ribs 9 are arranged on the fixing frame; the novel coal dust collector is characterized in that a coal dust discharge port 10 is further formed in the bottom of the barrel body 1, an M-shaped wear-resistant ceramic wafer 11 is lined inside the coal dust discharge port 10, a through dovetail groove is formed in the bottom of the M-shaped wear-resistant ceramic wafer 11, and the dovetail groove is of an inverted U-shaped structure with a small upper portion and a large lower portion.
Example 2:
the wear-resistant pulverized coal shade separation device comprises a cylinder body 1, wherein the cylinder body 1 is of a cylindrical connection cone structure, the taper of a cone is 30 degrees, the cylinder body 1 is obliquely arranged, and the included angle between the cylinder body 1 and a vertical pulverized coal feed inlet 4 is 5 degrees; the inner part of the cylinder body 1 is embedded with wear-resistant ceramic 2, the wear-resistant ceramic 2 is of a dovetail structure, a dovetail strip with a narrow lower part and a wide upper part is arranged at the bottom, and a stepped round hole 21 for stud welding is arranged in the middle; specifically, the wear-resistant ceramic 2 is 20mm thick and is fixed on the inner surface of the cylinder 1 in a dual mode of high-temperature inorganic binder and stud welding; two cylinders 1 are arranged and are symmetrically arranged side by side; the side surface of the top of the cylinder body 1 is connected with a side surface elbow 3 embedded with an integral wear-resistant ceramic sleeve, the side surface elbow 3 is connected with a pulverized coal feed inlet 4, specifically, the pulverized coal feed inlet 4 is of a square structure, and the inner surface of the pulverized coal feed inlet is lined with wear-resistant ceramic 2; l-shaped arc transition ceramics 13 are embedded in the inner surface of the joint of the cylinder body 1 and the side elbow 3; the top of the cylinder body 1 is connected with two swirl regulators 5, and the two swirl regulators 5 are used for respectively controlling the flow distribution of the pulverized coal in the two cylinder bodies 1; the lower end of the swirl regulator 5 is provided with a guide vane 6, the edge of the guide vane 6 is wrapped by a U-shaped wear-resistant ceramic plate 7, the thickness of the U-shaped wear-resistant ceramic plate 7 is 15mm, the material is silicon carbide ceramic, and the Rockwell hardness HRC is 88; the upper end of the top of the cylinder body 1 is also connected with an end surface elbow 12, and the end surface elbow 12 is connected with an exhaust pipeline; a fixing frame 8 is arranged on the periphery of the cylinder body 1, and reinforcing ribs 9 are arranged on the fixing frame; the novel coal dust collector is characterized in that a coal dust discharge port 10 is further formed in the bottom of the barrel body 1, an M-shaped wear-resistant ceramic wafer 11 is lined inside the coal dust discharge port 10, a through dovetail groove is formed in the bottom of the M-shaped wear-resistant ceramic wafer 11, and the dovetail groove is of an inverted U-shaped structure with a small upper portion and a large lower portion.
Example 3:
the wear-resistant pulverized coal shade separation device comprises a cylinder body 1, wherein the cylinder body 1 is of a cylindrical connection cone structure, the taper of a cone is 45 degrees, the cylinder body 1 is obliquely arranged, and the included angle between the cylinder body 1 and a vertical pulverized coal feed inlet 4 is 10 degrees; the inner part of the cylinder body 1 is embedded with wear-resistant ceramic 2, the wear-resistant ceramic 2 is of a dovetail structure, a dovetail strip with a narrow lower part and a wide upper part is arranged at the bottom, and a stepped round hole 21 for stud welding is arranged in the middle; specifically, the wear-resistant ceramic 2 is 30mm thick and is fixed on the inner surface of the cylinder 1 in a dual mode of high-temperature inorganic binder and stud welding; two cylinders 1 are arranged and are symmetrically arranged side by side; the side surface of the top of the cylinder body 1 is connected with a side surface elbow 3 embedded with an integral wear-resistant ceramic sleeve, the side surface elbow 3 is connected with a pulverized coal feed inlet 4, specifically, the pulverized coal feed inlet 4 is of a square structure, and the inner surface of the pulverized coal feed inlet is lined with wear-resistant ceramic 2; l-shaped arc transition ceramics 13 are embedded in the inner surface of the joint of the cylinder body 1 and the side elbow 3; the top of the cylinder body 1 is connected with two swirl regulators 5, and the two swirl regulators 5 are used for respectively controlling the flow distribution of the pulverized coal in the two cylinder bodies 1; the lower end of the swirl regulator 5 is provided with a guide vane 6, the edge of the guide vane 6 is wrapped by a U-shaped wear-resistant ceramic plate 7, the thickness of the U-shaped wear-resistant ceramic plate 7 is 20mm, the material is ZTA ceramic, and the Rockwell hardness HRC is 85; the upper end of the top of the cylinder body 1 is also connected with an end surface elbow 12, and the end surface elbow 12 is connected with an exhaust pipeline; a fixing frame 8 is arranged on the periphery of the cylinder body 1, and reinforcing ribs 9 are arranged on the fixing frame; the novel coal dust collector is characterized in that a coal dust discharge port 10 is further formed in the bottom of the barrel body 1, an M-shaped wear-resistant ceramic wafer 11 is lined inside the coal dust discharge port 10, a through dovetail groove is formed in the bottom of the M-shaped wear-resistant ceramic wafer 11, and the dovetail groove is of an inverted U-shaped structure with a small upper portion and a large lower portion.
Finally, it should be noted that the above-mentioned list is only a specific embodiment of the present invention. It is obvious that the present invention is not limited to the above embodiments, but many variations are possible. All modifications which can be derived or suggested by a person skilled in the art from the disclosure of the present invention are to be considered within the scope of the invention.
Claims (10)
1. A wear-resistant pulverized coal shade separation device comprises a cylinder body (1), and is characterized in that wear-resistant ceramics (2) are embedded in the cylinder body (1); two cylinders (1) are arranged and are symmetrically arranged side by side; the side surface of the top of the cylinder body (1) is connected with a side surface elbow (3), and the side surface elbow (3) is connected with a pulverized coal feeding port (4); the top of the cylinder body (1) is connected with two swirl regulators (5), and the two swirl regulators (5) are used for respectively controlling the pulverized coal flow of the two cylinder bodies (1); the lower end of the swirl regulator (5) is provided with a guide vane (6), and the edge of the guide vane (6) is wrapped with a U-shaped wear-resistant ceramic plate (7); a fixed frame (8) is arranged on the periphery of the cylinder body (1), and reinforcing ribs (9) are arranged on the fixed frame (8); the bottom of the cylinder body (1) is also provided with a coal powder discharge hole (10), and an M-shaped wear-resistant ceramic wafer (11) is lined in the coal powder discharge hole (10).
2. The wear-resistant pulverized coal shade separation device according to claim 1, wherein the wear-resistant ceramic (2) is of a dovetail structure, the bottom of the wear-resistant ceramic is provided with a dovetail strip which is narrow at the bottom and wide at the top, and the middle of the wear-resistant ceramic is provided with a stepped round hole (21) for stud welding.
3. The wear-resistant pulverized coal shade separation device according to claim 2, wherein the wear-resistant ceramic (2) is 10-30 mm thick and is fixed on the inner surface of the cylinder (1) in a dual mode of high-temperature inorganic binder and stud welding.
4. The wear-resistant pulverized coal concentration and separation device according to claim 1, wherein the top upper end of the cylinder (1) is further connected with an end surface elbow (12), and the end surface elbow (12) is connected with an exhaust pipeline.
5. The wear-resistant pulverized coal concentration and separation device according to claim 1, wherein an integral wear-resistant ceramic sleeve is embedded in the side elbow (3).
6. The wear-resistant pulverized coal concentration and separation device according to claim 3, wherein the inner surface of the joint of the cylinder (1) and the side elbow (3) is embedded with L-shaped arc transition ceramics (13).
7. The wear-resistant pulverized coal concentration and separation device according to claim 1, wherein the pulverized coal feed inlet (4) is of a square structure, and the inner surface of the pulverized coal feed inlet is lined with the wear-resistant ceramic (2).
8. The wear-resistant pulverized coal concentration and dilution separation device according to claim 1, wherein the cylinder body (1) is of a cylindrical connection cone structure, the taper of the cone is 25-45 degrees, the cylinder body (1) is obliquely arranged, and the included angle between the cylinder body and the vertical pulverized coal feed port (4) is 3-10 degrees.
9. The wear-resistant pulverized coal concentration and separation device according to claim 1, wherein the U-shaped wear-resistant ceramic sheet (7) is 10-20 mm thick and made of Al2O3One of ceramic, SiC ceramic or ZTA ceramic.
10. The wear-resistant pulverized coal concentration and separation device according to claim 1, wherein a through dovetail groove is formed at the bottom of the M-shaped wear-resistant ceramic plate (11), and the dovetail groove is of an inverted U-shaped structure with a small upper part and a large lower part.
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| CN201755558U (en) * | 2010-08-18 | 2011-03-09 | 湖南精城特种陶瓷有限公司 | Wear-resistant ceramic pulverized coal rich-lean separator |
| CN201807335U (en) * | 2010-08-25 | 2011-04-27 | 湖南精城特种陶瓷有限公司 | Wear-resistant porcelain mixing blade |
| CN206911585U (en) * | 2017-04-01 | 2018-01-23 | 湖南精城特种陶瓷有限公司 | A kind of cyclone is ceramic-lined |
| CN206846703U (en) * | 2017-05-16 | 2018-01-05 | 江苏京成机械制造有限公司 | Abrasionproof dividing plate for coal powder fired boiler burner spout |
| CN207188211U (en) * | 2017-08-07 | 2018-04-06 | 上海三耐电力设备耐磨新技术有限公司 | Long-acting wear resistant blade |
| CN209743330U (en) * | 2019-04-05 | 2019-12-06 | 湖南西拓新材料科技有限公司 | Dovetail type composite wear-resistant ceramic lining plate |
| CN209758340U (en) * | 2019-04-05 | 2019-12-10 | 湖南西拓新材料科技有限公司 | M-type ceramic for drum encapsulation |
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