CN215612312U

CN215612312U - Non-pressure three-product cyclone anti-blocking wetting pipe

Info

Publication number: CN215612312U
Application number: CN202122197820.2U
Authority: CN
Inventors: 马茂华; 彭江; 王笃生; 祁海龙
Original assignee: Panzhihua Clean Coal Branch Of Sichuan Chuanmei Huarong Energy Co ltd
Current assignee: Panzhihua Clean Coal Branch Of Sichuan Chuanmei Huarong Energy Co ltd
Priority date: 2021-09-10
Filing date: 2021-09-10
Publication date: 2022-01-25
Anticipated expiration: 2031-09-10

Abstract

The utility model relates to an anti-blocking wetting pipe of a non-pressure three-product swirler, belongs to the field of swirlers, and aims to avoid blocking of the wetting pipe. The device comprises a wetting tube body for conveying suspension liquid for a mixing cylinder, wherein one end of the wetting tube body connected with the mixing cylinder is an outlet end, and the other end of the wetting tube body is an inlet end; the wetting pipe body comprises a first wetting pipe section, a second wetting pipe section and an intermediate connecting section, wherein the first wetting pipe section and the second wetting pipe section are coaxial, and the intermediate connecting section is positioned between the first wetting pipe section and the second wetting pipe section; the pipe diameter of the connecting section is larger than that of the wetting pipe section I and the wetting pipe section II at two ends; an inspection opening is formed in the connecting section, and an inspection cover which is detachably connected with the inspection opening and used for plugging the inspection opening is arranged. Through set up the linkage segment that the pipe diameter is bigger between wetting pipe section one and wetting pipe section two, when making the suspension get into the big pipe section of internal diameter from the pipe section that the internal diameter is little, lump coal and waste rock subside and stop in the linkage segment, through opening block coal and the waste rock of inspection mouth alright clearance linkage segment, can effectively prevent the wet pipe and block up.

Description

Non-pressure three-product cyclone anti-blocking wetting pipe

Technical Field

The utility model belongs to the field of non-pressure three-product cyclones, and particularly relates to an anti-blocking wetting pipe of a non-pressure three-product cyclone.

Background

In the desilting non-pressure three-product cyclone-direct flotation process of a certain company, the problem that gangue is carried by clean coal screens for a long time since heavy medium coal separation is adopted is caused because a small amount of gangue and coal blocks with large granularity exist in suspension liquid of a heavy medium system, and the gangue and the coal blocks enter a small-diameter wetting pipe with the same cross section size everywhere as shown in figure 1 together with the suspension liquid when a qualified medium pump of the cyclone starts, so that the wetting pipe is blocked. The blockage of the wetting tube results in insufficient pre-wetting and pre-sorting of the material, which results in poor cyclone sorting performance. Especially, when the wet pipe is completely blocked, a large amount of large gangue appears on the clean coal screen, and the clean coal on-line ash meter displays that the ash content of the clean coal exceeds the ash content of the clean coal. If the blockage of the wetting pipe is not found timely, the material mixing barrel and the feeding chute of the three-product cyclone are easily blocked to cause the internal decompression of the three-product cyclone, and the production interruption accident is caused. Meanwhile, the cleaning and dredging process needs to be carried out by opening holes on the pipeline or cutting off the pipeline during the process of blocking the wetting pipe, the pipeline is welded again after the cleaning and dredging process is completed, the accident handling time is long, and the workload of workers is large. When the cyclone is blocked, a large amount of raw coal and suspension liquid enter the clean coal collecting and medium removing system, so that serious phenomena of 'running and overflowing' and the quality of clean coal products are caused, a large amount of medium is seriously lost, and the consumption of the medium is high.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a non-pressure three-product cyclone anti-blocking wetting pipe which can effectively avoid the blockage of the wetting pipe.

The technical scheme adopted by the utility model is as follows: the non-pressure three-product cyclone anti-blocking wetting pipe comprises a wetting pipe body for conveying suspension liquid for a mixing cylinder, wherein one end of the wetting pipe body, which is connected with the mixing cylinder, is an outlet end, and the other end of the wetting pipe body is an inlet end; the method is characterized in that: the wetting pipe body comprises a first wetting pipe section, a second wetting pipe section and an intermediate connecting section, wherein the first wetting pipe section and the second wetting pipe section are coaxial, and the intermediate connecting section is positioned between the first wetting pipe section and the second wetting pipe section; the pipe diameter of the connecting section is larger than that of the wetting pipe section I and the wetting pipe section II at two ends; an inspection opening is formed in the connecting section, and an inspection cover which is detachably connected with the inspection opening and used for plugging the inspection opening is arranged.

Further, the wetting tube body comprises a horizontal section and an inclined section; one end of the inclined section is connected with the horizontal section, and the other end of the inclined section extends downwards in an inclined mode; the connecting section is arranged on the inclined section and divides the inclined section into an upper section positioned at the upper end of the connecting section and a lower section positioned at the lower end of the connecting section; the first wetting pipe section is formed by an upper section and a horizontal section; and the lower section is used as the second wetting pipe section.

Further, the connecting section is arranged adjacent to the horizontal section.

Furthermore, the pipe diameter of the connecting section is D, and the pipe diameter of the first wetting pipe section or the second wetting pipe section is D; d ═ 2-2.5 × D.

Furthermore, the inspection port is a pipe section communicated with the connecting section, and a flange is arranged at the outer end of the pipe section; the inspection cover blocks the outer end opening of the pipe section and is connected with the flange through a connecting bolt.

Further, the inspection opening is arranged in the top area of the connecting section along the circumferential direction of the connecting section.

The utility model has the beneficial effects that: the utility model discloses a non-pressure three-product cyclone anti-blocking wetting pipe, which is characterized in that a connecting section with a larger pipe diameter is arranged between a wetting pipe section I and a wetting pipe section II to connect the wetting pipe section I and the wetting pipe section II, so that the inner diameter of a wetting pipe body is changed from small to large and then the original pipe diameter change process is recovered. The suspension gets into the pipe section that the internal diameter is big from the pipe section that the internal diameter is little, the cross sectional area increases, the suspension velocity of flow reduces, make lump coal in the suspension and waste rock speed together reduce and lose forward kinetic energy, lump coal and waste rock subside and stay in the linkage segment, after the suspension was full of the linkage segment, the action of linkage segment performance low-pressure tank, make the suspension continue to move ahead, and lump coal and waste rock in the suspension subside and stay in the linkage segment bottom, through opening inspection hole alright clearance linkage segment's lump coal and waste rock, can effectively prevent wet pipe blocking.

Drawings

FIG. 1 is a prior art schematic;

FIG. 2 is a schematic view of the present invention.

In the figure, a wetting tube body 1, a horizontal section 1A, an upper section 1B, an outlet end 1D, an inlet end 1E, a wetting tube section A, a wetting tube section B, a connecting section C, an inspection opening 2, a tube section 2A, a flange 2B, an inspection cover 3 and a mixing barrel 4.

Detailed Description

The utility model is further described below with reference to the accompanying drawings:

the non-pressure three-product cyclone anti-blocking wetting pipe comprises a wetting pipe body 1 for conveying suspension for a mixing cylinder 4, wherein one end of the wetting pipe body 1, which is connected with the mixing cylinder 4, is an outlet end 1D, and the other end of the wetting pipe body is an inlet end 1E; the wetting pipe body 1 comprises a wetting pipe section I A, a wetting pipe section II B and an intermediate connecting section C, wherein the wetting pipe section I A, the wetting pipe section II B and the intermediate connecting section C are coaxial along the axial direction of the wetting pipe body; the pipe diameter of the connecting section C is larger than the pipe diameters of the first wetting pipe section A and the second wetting pipe section B at the two ends; an inspection opening 2 is arranged on the connecting section C, and an inspection cover 3 which is detachably connected with the inspection opening 2 and used for plugging the inspection opening 2 is arranged.

The utility model discloses a non-pressure three-product cyclone anti-blocking wetting pipe, which is characterized in that a connecting section C with a larger pipe diameter is arranged between a wetting pipe section I A and a wetting pipe section II B to connect the wetting pipe section I A and the wetting pipe section II B, so that the inner diameter of a wetting pipe body 1 is changed from small to large and then the original pipe diameter change process is recovered. The suspension gets into the pipe section that the internal diameter is big from the pipe section that the internal diameter is little, the cross sectional area increases, the suspension velocity of flow reduces, make lump coal in the suspension and waste rock speed together reduce and lose forward kinetic energy, lump coal and waste rock subside and stay in linkage segment C, after suspension was full of linkage segment C, linkage segment C played the effect of low-pressure tank, make the suspension continue to move ahead, and lump coal and waste rock in the suspension subside and stay in linkage segment C bottom, through opening inspection opening 2 alright clearance linkage segment C's lump coal and waste rock, can effectively prevent moist pipe blocking.

In order to facilitate lump coal and gangue to stay in the connecting section C, preferably, the wetting pipe body 1 comprises a horizontal section 1A and an inclined section; one end of the inclined section is connected with the horizontal section 1A, and the other end of the inclined section extends downwards in an inclined mode; the connecting section C is arranged on the inclined section and divides the inclined section into an upper section 1B positioned at the upper end of the connecting section C and a lower section positioned at the lower end of the connecting section C; the wetting pipe section I A is formed by an upper section 1B and a horizontal section 1A; and the lower section is used as the wetting pipe section II B.

Horizontal segment 1A level setting for suspension is horizontal outflow by the moment that exit end 1D flows out, can effectively avoid suspension to splash.

If linkage segment C closes on the setting of wetting pipe body 1's entry end 1E, then the velocity of flow of suspension in the department of being far away from mixing cylinder 4 reduces, and linkage segment C increases apart from wetting pipe body 1 exit end 1D's elevation, is unfavorable for the suspension to flow into mixing cylinder 4, in order to avoid this problem, preferably, linkage segment C closes on horizontal segment 1A and sets up.

In order to ensure that lump coal and gangue are completely settled and stay at the bottom of the connecting section C, preferably, the pipe diameter of the connecting section C is D, and the pipe diameter of the first wetting pipe section A or the second wetting pipe section B is D; d ═ 2-2.5) D.

The inspection opening 2 may be a hole opened in the pipe wall of the connecting section C. In the utility model, the inspection port 2 is a pipe section 2A communicated with the connecting section C, and the outer end of the pipe section 2A is provided with a flange 2B; the inspection cover 3 blocks an outer end opening of the pipe section 2A and is connected with the flange 2B through a connecting bolt. The inspection opening 2 is simple in structure, and the pipe section 2A is connected with the connecting section C in a welding mode. One end of the pipe section 2A connected with the connecting section C is the inner end of the pipe section 2A, and the other end is the outer end of the pipe section 2A. The flange 2B is arranged at the outer end of the pipe section 2A, so that the cover 3 is convenient to mount and dismount.

In order to facilitate cleaning of lump coal and gangue staying at the connecting section C from the inspection opening 2, the inspection opening 2 is arranged at the top area of the connecting section C along the annular direction of the connecting section C.

Example (b): a wetting pipe of a desliming non-pressure three-product cyclone of a certain company is reformed, the original phi 100mm wetting pipe is cut off from the outlet end 1D600mm connected with a mixing cylinder 4, the part of the original phi 100mm wetting pipe with the inlet end 1E is cut off to be 600mm long from the cut-off position, the phi 250mm pipe is replaced to be a connecting section C, a phi 100mm pipe section with the length of 100mm is arranged at the middle position right above the newly-added phi 250mm pipe to be used as an inspection opening 2, the inspection opening 2 is sealed by a flange 2B and an inspection cover 3, and other parts of the non-pressure three-product cyclone are kept in the original state and are not changed. Seen from the actual operation condition, the improved wetting tube has good anti-blocking effect, and the problem of blockage of the wetting tube does not occur in the production process. The three-product cyclone has good separation effect and stable product quality indexes, and the multiple production tests before and after improvement and the three-stage floating and sinking comparison of the clean coal screen are shown in the following table.

Wherein comparative example 1 and comparative example 2 are data from wet tube retrofit pre-set. Examples 1, 2 and 3 are data collected after wet tube modification.

Claims

1. The non-pressure three-product cyclone anti-blocking wetting pipe comprises a wetting pipe body (1) for conveying suspension for a mixing barrel (4), wherein one end of the wetting pipe body (1) connected with the mixing barrel (4) is an outlet end (1D), and the other end of the wetting pipe body is an inlet end (1E); the method is characterized in that: the wetting pipe body (1) comprises a first wetting pipe section (A), a second wetting pipe section (B) and an intermediate connecting section (C), wherein the first wetting pipe section (A), the second wetting pipe section (B) and the intermediate connecting section (C) are coaxial along the axial direction of the wetting pipe body; the pipe diameter of the connecting section (C) is larger than the wetting pipe section I (A) and the wetting pipe section II (B) at two ends; an inspection opening (2) is formed in the connecting section (C), and an inspection cover (3) which is detachably connected with the inspection opening (2) and used for plugging the inspection opening (2) is arranged.

2. The non-pressure tri-product cyclone anti-clogging wetting tube of claim 1, wherein: the wetting tube body (1) comprises a horizontal section (1A) and an inclined section; one end of the inclined section is connected with the horizontal section (1A), and the other end of the inclined section extends downwards in an inclined mode; the connecting section (C) is arranged on the inclined section and divides the inclined section into an upper section (1B) positioned at the upper end of the connecting section (C) and a lower section positioned at the lower end of the connecting section (C); the upper section (1B) and the horizontal section (1A) form a first wetting pipe section (A); and taking the lower section as the second wetting pipe section (B).

3. The non-pressure tri-product cyclone anti-clogging wetting tube of claim 2, wherein: the connecting section (C) is arranged close to the horizontal section (1A).

4. A non-pressure tri-product cyclone anti-clogging wetting tube as defined in claim 1, 2 or 3, wherein: the pipe diameter of the connecting section (C) is D, and the pipe diameter of the wetting pipe section I (A) or the wetting pipe section II (B) is D; d ═ 2-2.5) D.

5. The non-pressure tri-product cyclone anti-clogging wetting tube of claim 1 or 2, characterized in that: the inspection port (2) is a pipe section (2A) communicated with the connecting section (C), and a flange (2B) is arranged at the outer end of the pipe section (2A); the inspection cover (3) blocks the outer end opening of the pipe section (2A) and is connected with the flange (2B) through a connecting bolt.

6. The non-pressure tri-product cyclone anti-clogging wetting tube of claim 5, wherein: the inspection opening (2) is arranged in the top area of the connecting section (C) along the circumferential direction of the connecting section (C).