CN217857345U

CN217857345U - Rotary separator, coal mill and coal milling process system

Info

Publication number: CN217857345U
Application number: CN202222010150.3U
Authority: CN
Inventors: 尹招进; 王小勇; 马跃; 张城; 董贵宁; 谢波; 王川
Original assignee: Yunnan Tianan Chemical Co ltd
Current assignee: Yunnan Tianan Chemical Co ltd
Priority date: 2022-08-02
Filing date: 2022-08-02
Publication date: 2022-11-22
Anticipated expiration: 2032-08-02

Abstract

The utility model discloses a rotary separator relates to coal grinding equipment technical field, including casing, annular moving blade, annular stationary blade, coal breakage pipe and limestone pipe, the stationary blade cover locate the moving blade outside and with casing fixed connection, and radially have the clearance between stationary blade inner peripheral surface and the moving blade outer peripheral face, the one end of limestone pipe stretches out in the casing top and is used for letting in the lime stone, in the other end stretched into the clearance, the moving blade cover was located outside the coal breakage pipe. The utility model also provides a coal pulverizer and coal grinding process systems including above-mentioned rotary separator. The utility model provides a rotary separator, coal pulverizer and coal grinding process systems can avoid the coal breakage pipe to take place to block up, improves production efficiency.

Description

Rotary separator, coal mill and coal milling process system

Technical Field

The utility model belongs to the technical field of coal grinding equipment technique and specifically relates to a rotary separator, coal pulverizer and coal grinding process systems are related to.

Background

Because the water content of the pulverized coal is high in rainy season, especially after clean coal is used, the particle size of raw coal is greatly changed, raw coal which occupies most of original lump coal is changed into pulverized coal which is completely composed of small particle size, the particle size of the pulverized coal is reduced, the pulverized coal is easy to agglomerate after meeting water, and meanwhile, the pulverized coal is not volatile, so that the water content of the raw material is high. In the use process of a coal mill, limestone is added into coal powder, the ash melting point and the slag flowability can be adjusted, but the existing raw coal and limestone are fed through a coal drop pipe in a rotary separator of the coal mill and are mixed in the coal drop pipe, after the raw coal is contacted with the limestone, as the water content in the coal powder is higher, the coal powder can be adhered to the limestone, hard scar blocks are formed on the coal drop pipe of the coal mill, the scar blocks slowly increase along with the continuous feeding, the coal drop pipe of the coal mill can be blocked in a short time, a coal grinding system is stopped, the coal drop pipe must be cleaned about every two hours under the common condition in rainy season, the coal grinding line is usually stopped due to the blockage of the coal drop pipe, after the coal drop pipe is blocked, the coal grinding line is seriously caked, the cleaning is difficult, the cleaning time is longer, the cleaning position is higher, the stable operation and the maintenance of a coal gasification device are difficult, and the potential safety hazard of high coal falling exists.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a rotary separator, coal pulverizer and coal grinding process system to solve the problem that above-mentioned prior art exists, avoid the coal breakage pipe to take place to block up, improve production efficiency.

In order to achieve the above object, the utility model provides a following scheme:

the utility model provides a rotary separator, including casing, annular moving blade, annular stator blade, coal breakage pipe and limestone pipe, the stator blade cover is located the moving blade outer and with casing fixed connection, just stator blade inner peripheral surface with radially have the clearance between the moving blade outer peripheral face, the one end of limestone pipe stretch out in the casing top is used for letting in the lime stone, and the other end stretches into in the clearance, the moving blade cover is located outside the coal breakage pipe.

Preferably, still include the cover body, the cover body both ends opening, and one end is big footpath end, and the other end is the path end, the limestone pipe with the coal breakage pipe all with the cover body intercommunication, big footpath end edge with stator blade lower limb circumferential direction connects, the path end is used for to the subassembly blanking of milling.

Preferably, the cross section of the cover body is circular, and the longitudinal section of the cover body is trapezoidal.

Preferably, the cover body is provided with a wear-resistant plate at a position opposite to the lower end of the limestone pipe.

Preferably, the lower end of the limestone pipe extends into the housing.

Preferably, the top of the shell is provided with a through hole, and the limestone pipe is fixedly arranged in the through hole in a penetrating mode.

Preferably, a sealing ring is fixedly arranged between the edge of the through hole and the outer side wall of the limestone pipe.

Preferably, the limestone tubes and the wear plates are made of stainless steel.

The utility model also provides a coal pulverizer, including the subassembly of milling and as above the rotary separator, rotary separator set up in the top of the subassembly of milling.

The utility model also provides a coal grinding process system, which comprises a drying component, a filtering component, a collecting component and the coal grinder; the drying assembly with the air intake intercommunication of coal pulverizer and can to provide hot inert gas in the coal pulverizer, the play powder mouth of coal pulverizer with filtering component's feed inlet intercommunication, filtering component is used for letting in pulverized coal in the filtering component filters, filtering component's discharge gate with collect the subassembly intercommunication, it is used for collecting the subassembly the pulverized coal.

The utility model discloses for prior art gain following technological effect:

the rotary separator provided by the utility model can avoid the blockage of the coal dropping pipe caused by the scar block formed by mixing limestone and coal powder in the coal dropping pipe by adopting different feeding pipelines, thereby improving the production efficiency; and the limestone pipe is arranged between the static blades and the moving blades, so that the action of the moving blades is not influenced, and the realization of the original function of the rotary separator is not influenced.

The utility model provides a coal pulverizer can avoid the coal breakage pipe of rotary separator to take place to block, promotes production efficiency.

The utility model provides a coal grinding process systems can avoid the coal breakage pipe of coal pulverizer to take place to block, promotes production efficiency.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

FIG. 1 is a schematic view of a rotary separator according to an embodiment;

FIG. 2 isbase:Sub>A schematic cross-sectional view taken along line A-A of FIG. 1;

FIG. 3 is a schematic structural view of a coal pulverizer provided in the second embodiment;

fig. 4 is a schematic structural diagram of a coal grinding process system provided in the third embodiment.

An icon: 1-a coal mill; 10-a milling assembly; 20-rotating the separator; 21-a housing; 22-moving blades; 23-stationary blades; 24-a coal dropping pipe; 25-limestone tube; 26-a cover body; 27-a wear plate; 28-a through hole; 29-a powered mount; 2-a drying component; 3-a filtration module; 4-a collection assembly; 5-circulating fan; 6-a rotary feeder; 7-a screw conveyor; 8-buried scraper.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

In order to make the above objects, features and advantages of the present invention more comprehensible, the present invention is described in detail with reference to the accompanying drawings and the detailed description.

Example one

Referring to fig. 1 and 2, the present embodiment provides a rotary separator 20, including a casing 21, an annular rotor blade 22, an annular stator blade 23, a coal dropping pipe 24, and a limestone pipe 25, wherein the stator blade 23 is sleeved outside the rotor blade 22 and fixedly connected to the casing 21, a gap is formed between an inner circumferential surface of the stator blade 23 and an outer circumferential surface of the rotor blade 22 along a radial direction, one end of the limestone pipe 25 extends out of a top of the casing 21 and is used for introducing limestone, the other end extends into the gap, the rotor blade 22 is sleeved outside the coal dropping pipe 24, and an axis of the rotor blade 22 coincides with an axis of the coal dropping pipe 24.

By adopting different feeding pipelines for the limestone and the coal powder, the blockage of the coal dropping pipe 24 caused by the scar block formed by mixing the limestone and the coal powder in the coal dropping pipe 24 can be avoided, and the production efficiency is improved; the limestone tube 25 is provided between the stationary blade 23 and the moving blade 22, and does not affect the operation of the moving blade 22 nor the realization of the original function of the rotary separator 20.

Wherein the moving blade 22 is internally connected with a power bracket 29, the center of the power bracket 29 is sleeved outside the coal dropping pipe 24, and the power bracket 19 is driven by a driving mechanism to rotate and drive the moving blade 22 to rotate; specifically, the specific structures of the moving blades 22, the coal dropping pipe 24 and the power bracket 29 are the same as the corresponding structures of the rotary separator 20 of the conventional coal mill, and are not described herein in detail, such as the rotary separator of model S-1102A.

In an alternative of this embodiment, it is preferable that the rotary separator 20 provided in this embodiment further includes a cover 26, the cover 26 is open at two ends, one end is a large diameter end, the other end is a small diameter end, the limestone pipe 25 and the coal dropping pipe 24 are both communicated with the cover 26, the edge of the large diameter end is circumferentially connected with the lower edge of the stationary blade 23, limestone and coal powder can be mixed in the cover 26, and the small diameter end is used for dropping the coal to the grinding assembly 10.

In the alternative of this embodiment, it is preferable that the cross section of the cover 26 is circular, and the longitudinal section of the cover 26 is trapezoidal, so as to facilitate blanking.

In an alternative of this embodiment, it is preferable that the wear-resistant plate 27 is disposed on the cover 26 opposite to the lower end of the limestone pipe 25, so as to prevent limestone from directly impacting the cover 16, thereby prolonging the service life.

In the alternative of this embodiment, it is preferable that the lower end of the limestone pipe 25 extends into the cover 26, so that the limestone can directly enter the cover 26 to mix with the pulverized coal, and the original function of the separator is prevented from being affected by the dispersion of the limestone in the gap between the driven blade 22 and the stationary blade 23.

In an alternative of this embodiment, it is preferable that a through hole 28 is provided at the top of the housing 21, and the limestone tube 25 is fixedly inserted into the through hole 28.

Furthermore, a sealing ring is fixedly arranged between the edge of the through hole 28 and the outer side wall of the limestone pipe 25, so that powder is prevented from escaping from the through hole 28.

In the alternative of this embodiment, it is preferable that the limestone tube 25 and the wear plate 27 are made of stainless steel.

Example two

Referring to fig. 3, the present embodiment provides a coal mill, including a milling assembly 10 and a rotary separator 20 according to the first embodiment, wherein the rotary separator 20 is disposed above the milling assembly 10, and the structure of the milling assembly 10 and the cooperation with the rotary separator 20 are the same as those of the conventional coal mill, which will not be described herein, such as the coal mill model ZGM 133.

EXAMPLE III

The embodiment provides a coal grinding process system, which comprises a drying assembly 2, a filtering assembly 3, a collecting assembly 4 and a coal grinder 1 provided in the second embodiment; the air inlet intercommunication of drying assembly 2 and coal pulverizer 1 can provide hot inert gas in to coal pulverizer 1, and the powder outlet of coal pulverizer 1 communicates with filter assembly 3's feed inlet, and filter assembly 3 is used for letting in the buggy in filter assembly 3 and filters, and filter assembly 3's discharge gate and collection subassembly 4 communicate, and collection subassembly 4 is used for collecting the buggy.

Specifically, the drying component 2 is arranged as a hot blast stove, the filtering component 3 is a cloth bag filter, and the collecting component 4 is two pulverized coal storage tanks; specifically, coal powder in the coal mill 1 is dried by hot inert gas, the hot inert gas is heated by a hot blast stove, qualified coal powder enters a cloth bag filter through an outlet pipeline of a rotary separator 20 for filtration and separation, the separated coal powder is stored in a hopper of the coal mill, and the separated gas is pumped by a circulating fan 5 and enters a hot blast stove for recycling; the buggy of sack filter bottom divides four hoppers to get into four after the vibration sieve removes the impurity, gets into two screw conveyer 7 through four rotary feeder 6 respectively, then through two screw conveyer 7, send to two fine coal storage tanks through burying scraper 8.

The utility model discloses a concrete example is applied to explain the principle and the implementation mode of the utility model, and the explanation of the above example is only used to help understand the method and the core idea of the utility model; meanwhile, for the general technical personnel in the field, according to the idea of the present invention, there are changes in the concrete implementation and the application scope. In summary, the content of the present specification should not be construed as a limitation of the present invention.

Claims

1. A rotary separator, characterized by: comprises a shell (21), annular moving blades (22), annular stationary blades (23), a coal dropping pipe (24) and a limestone pipe (25), wherein the stationary blades (23) are sleeved outside the moving blades (22) and are fixedly connected with the shell (21), and a gap is arranged between the inner circumferential surface of the static blade (23) and the outer circumferential surface of the moving blade (22) along the radial direction, one end of the limestone pipe (25) extends out of the top of the shell (21) and is used for introducing limestone, the other end of the limestone pipe extends into the gap, and the moving blade (22) is sleeved outside the coal dropping pipe (24).

2. The rotary separator according to claim 1, wherein: still including the cover body (26), the cover body (26) both ends opening, and one end is the major diameter end, and the other end is the path end, limestone pipe (25) with coal breakage pipe (24) all with the cover body (26) intercommunication, the major diameter end edge with stator blade (23) lower limb circumferential direction is connected, the path end is used for to milling subassembly (10) blanking.

3. The rotary separator according to claim 2, wherein: the cross section of the cover body (26) is circular, and the longitudinal section of the cover body (26) is trapezoidal.

4. The rotary separator according to claim 2, wherein: and a wear-resistant plate (27) is arranged on the cover body (26) opposite to the lower end of the limestone pipe (25).

5. The rotary separator according to claim 2, wherein: the lower end of the limestone pipe (25) extends into the cover body (26).

6. The rotary separator according to claim 1, wherein: the top of the shell (21) is provided with a through hole (28), and the limestone pipe (25) is fixedly arranged in the through hole (28) in a penetrating mode.

7. The rotary separator according to claim 6, wherein: and a sealing ring is fixedly arranged between the edge of the through hole (28) and the outer side wall of the limestone pipe (25).

8. The rotary separator according to claim 4, wherein: the limestone pipe (25) and the wear-resistant plate (27) are made of stainless steel.

9. A coal pulverizer, characterized in that: comprising a milling assembly (10) and a rotary separator (20) according to any of claims 1-8, said rotary separator (20) being arranged above said milling assembly (10).

10. A coal grinding process system is characterized in that: comprising a drying assembly (2), a filtering assembly (3), a collecting assembly (4) and a coal mill (1) according to claim 9; drying assembly (2) with the air intake intercommunication of coal pulverizer (1) and can to provide hot inert gas in coal pulverizer (1), the play powder mouth of coal pulverizer (1) with the feed inlet intercommunication of filter assembly (3), filter assembly (3) are used for letting in pulverized coal in filter assembly (3) filters, the discharge gate of filter assembly (3) with collect subassembly (4) intercommunication, it is used for collecting to collect subassembly (4) the pulverized coal.