WO2020133502A1

WO2020133502A1 - Slag crushing apparatus for power plant boiler dry slag

Info

Publication number: WO2020133502A1
Application number: PCT/CN2018/125822
Authority: WO
Inventors: 许成钦
Original assignee: 深圳市能源环保有限公司
Priority date: 2018-12-29
Filing date: 2018-12-29
Publication date: 2020-07-02

Abstract

A slag crushing apparatus for power plant boiler dry slag, comprising a rack (4) and a crushing bin driven by a motor, wherein the crushing bin comprises a coarse crushing bin (3) and a fine crushing bin (10); a feeding hopper (2) is provided on an upper portion of the coarse crushing bin (3); dry slag enters the coarse crushing bin (3) from the feeding hopper (2); a coarse filter screen (19) is mounted at a joint of the coarse crushing bin (3) and the fine crushing bin (10); a discharging hopper (11) is provided at the bottom of the fine crushing bin (10); the fine crushing bin (10) is communicated with the discharging hopper (11), and a fine filter screen (20) is further provided between the fine crushing bin (10) and the discharging hopper (11). The dry slag enters the coarse crushing bin (3) from the feeding hopper (2) to be subjected to first-stage crushing firstly; slag powder having a large particle size is formed after primary crushing; the slag powder enters the fine crushing bin after being filtered by the coarse filter screen (19) to be subjected to second-stage crushing, then slag powder having a smaller particle size is formed; and finally the slag powder is discharged from the discharging hopper (11) after being filtered by the fine filter screen (20).

Description

Slag crushing device for power plant boiler dry slag

Technical field

The invention relates to dry slag crushing equipment, in particular to a power plant boiler dry slag crushing device.

Background technique

In power generation equipment, the slag produced by the boiler slag without any treatment and condensation is called dry slag, which is a by-product of boiler production. The application of dry slag depends on the specific conditions, and the recovery of dry slag can achieve a certain economy Benefits, the dry slag can be crushed into a certain size instead of crushed stone for building materials or paving. The slag crusher can crush the slag to a certain fineness. The traditional boiler dry slag crushing equipment uses one crushing, which has a large working load The disadvantages are different particle sizes of ash and slag, inability to crush at one time, and large wear on the cutter head.

Summary of the invention

In view of the deficiencies of the prior art, the present invention provides a power plant boiler dry slag crushing device, including a rack and a crushing bin driven by a motor, characterized in that the crushing bin includes a coarse crushing bin and a fine crushing bin, dry From the feed hopper, the slag first enters the coarse crushing bin for the first level of crushing, and after preliminary crushing, it forms a coarser slag powder, and then enters the fine crushing bin for the second level of crushing, and after further crushing, the finer slag is formed The powder is finally discharged from the discharge hopper. It effectively solves the problems of the existing power plant boiler dry slag and slag because there is only one level of crushing, the size of the slag powder is different, the crushing cannot be done at one time, and the wear on the cutter head is large.

The technical solution adopted by the present invention to solve the technical problem is a slag crushing device for dry slag of a power plant boiler, which includes a frame and a crushing bin driven by a motor, and is characterized in that the crushing bin includes a coarse crushing bin and a fine crushing bin,

The frame is provided with an upper support plate in the middle, the coarse crushing bin is installed and fixed on the upper support plate, a rough grinding rotor is laterally arranged inside the rough crushing bin, and both ends of the central axis of the rough grinding rotor The bearing is installed on the two side walls of the coarse crushing bin. The upper part of the coarse crushing bin is provided with a feed hopper. The dry slag enters the coarse crushing bin from the feed hopper. The left end of the central axis of the rough grinding roller is provided with a driving wheel , The rough grinding roller is driven by a motor through a driving wheel;

The outer cylindrical surface of the rough grinding roller is provided with a first row of impact hammers, a second row of impact hammers, a third row of impact hammers and a fourth row of impact hammers, wherein the first row of impact hammers and the third row of impact hammers The row of hammers and the center axis of the rough grinding roller are on the same plane while the hammers of the second row, hammers and fourth row are on the other plane and the two planes intersect perpendicularly;

The rack is provided with a lower support plate at the lower part, the fine crushing bin is installed and fixed on the lower support plate, the fine crushing bin is located below the coarse crushing bin, and the fine crushing rotator is arranged laterally inside the fine crushing bin The two ends of the central shaft of the shaft are installed on the left and right side walls of the fine crushing bin through bearings. The left end of the central shaft of the fine grinding roller is fixed with a driven wheel. The motor drives the driving wheel to run. The driving wheel drives the driven wheel to rotate to drive the fine grinding wheel. Roller rotation

Several groups of crushing blade belts are provided on the fine grinding rotating roller, and each crushing blade belt is spirally wound on the fine grinding rotating roller along the outer cylindrical surface of the fine grinding rotating roller and the spacing between the respective grinding blade belts is evenly set. Several crushing blades are evenly arranged on the crushing blade belt, and several cutting and grinding plates are evenly arranged longitudinally on the inner wall of the cylindrical surface of the fine crushing bin;

A coarse filter is installed at the junction of the coarse crushing bin and the fine crushing bin, and a discharge hopper is provided at the bottom of the fine crushing bin. The fine crushing bin communicates with the discharge hopper, and between the fine crushing bin and the discharge hopper There is also a fine filter in the room;

The dry slag enters the coarse crushing bin from the feed hopper and is firstly crushed first. After preliminary crushing, a coarse slag powder is formed. After being filtered through the coarse filter, it enters the fine crushing bin and then is crushed in the second stage. The fine slag powder is finally discharged from the discharge hopper after being filtered through a fine filter.

In a preferred solution of the invention, the hammers on the first row of hammers and the third row of hammers have the same distribution of hammers, and the hammers of the second row of hammers have the same distribution of hammers on the fourth row of hammers The hitting hammers on the first and second row of hitting hammers are staggered from the hitting hammers on the third and fourth row of hitting hammers.

According to a preferred solution of the present invention, the driving wheel drives the driven wheel to rotate through a belt.

Beneficial effect of the present invention: The present invention provides a power plant boiler dry slag crushing device. By setting a coarse crushing bin and a fine crushing bin, the dry slag enters the coarse crushing bin from the feed hopper and is first crushed first. After crushing, slag powder with coarser particle size is formed, and then it enters the fine crushing bin for second-level crushing, after which slag powder with finer particle size is formed, and finally discharged from the discharge hopper. It effectively solves the problems of the existing power plant boiler ash slag crushing because there is only one level of crushing, the size of the slag powder is different in size, it cannot be crushed at one time, and the wear on the cutter head is large.

BRIEF DESCRIPTION

Figures 1 to 5 are schematic structural diagrams of the first embodiment of the present invention; Figure 1 is a schematic diagram of the overall structure, Figures 2 to 5 are schematic diagrams of partial structures, Figures 3 and 5 are enlarged schematic diagrams of the structure, and Figure 3 is a diagram of Figure 2 Left view, Figure 5 is the left view of Figure 4.

In the picture:

1. Driving wheel;

2. Feed hopper;

3. Coarse crushing bin;

4. Rack;

5. Upper support plate;

6. Lower support plate;

7. Motor;

8. Motor base;

9. Follower wheel;

10. Fine crushing bin;

11. Outlet hopper;

12.1 The first row of hitting hammers, 12.11 The hitting hammers,

12.2 second row of hitting hammers, 12.3 third row of hitting hammers, 12.4 fourth row of hitting hammers;

13.1 Mounting base, 13.11 pin shaft;

14. Rough grinding roller;

15. Bearing;

16.1 Cutting board;

17.1, 17.2, 17.3 shredding blades, 17.11 shredding blades;

18. Fine grinding roller;

19. Coarse filter;

20. Fine filter.

detailed description

The figure shows that in this example, a power plant boiler dry slag crushing device includes a frame 4 and a crushing bin driven by a motor. The diagram shows that the crushing bin includes a coarse crushing bin 3 and a fine crushing bin 10,

The frame 4 is provided with an upper support plate 5 in the middle, and the coarse crushing silo 3 is installed and fixed on the upper support plate 5. The coarse crushing silo 3 is laterally provided with a coarse grinding rotary roller 14, and both ends of the central axis of the coarse grinding rotary roller 14 pass through The bearing 15 is installed on the two side walls of the coarse crushing bin 3, the upper part of the coarse crushing bin 3 is provided with a feed hopper 2, the dry slag enters the coarse crushing bin 3 from the feed hopper 2, and the left end of the central axis of the rough grinding roller 14 is fixed Driving wheel 1, the driving wheel 1 is arranged on the left side of the coarse crushing bin 3, and the rough grinding roller 14 is driven by the motor 7 through the driving wheel 1;

Figures 2 and 3 show that the outer row of rough grinding roller 14 is longitudinally provided with a first row of hammers 12.1, a second row of hammers 12.2, a third row of hammers 12.3 and a fourth row of hammers 12.4, of which The first row of hammers 12.1, the third row of hammers 12.3 and the central axis of the rough grinding rotor 14 are in the same plane, while the second row of hammers 12.2, the fourth row of hammers 12.4 and the central axis of the rough grinding roller 14 In the other plane, the two planes intersect perpendicularly. The figure shows that in this example, the hammers on the first row of hammers 12.1 and the third row of hammers 12.3 have the same distribution of hammers, while the second row of hammers 12.2 and the fourth row of hammers 12.4 The hammer distribution is the same. The hammers on the first row of hammers 12.1 and the third row of hammers 12.3 are staggered from the hammers on the second row of hammers 12.2 and the fourth row of hammers 12.4.

When the hammer is rotating, it can hit a large volume of dry slag, so that the dry slag can be broken and finely divided. Fig. 2 shows that the hammer 12.11 is mounted on the mounting base 13.1 through the pin 13.11, and the mounting base 13.1 is fixed on the rough grinding roller 14. The connection between the hammer and the rough grinding roller 14 through the pin shaft can make the hammer have a buffering effect when the slag is hit, and reduce the adverse effects of the impact force.

The frame 4 is provided with a lower support plate 6 at the lower part, and the fine crushing silo 10 is installed and fixed on the lower support plate 6, the fine crushing silo 10 is located below the coarse crushing silo 3, and the fine grinding rotating roller 18 is arranged laterally inside the fine crushing silo 10, and the fine grinding rotating The two ends of the central axis of the roller 18 are installed on the left and right side walls of the fine crushing bin 10 through bearings. The left end of the central axis of the fine grinding roller 18 is provided with a driven wheel 9, the driven wheel 9 is disposed on the left side of the fine crushing bin 10, and the motor 7 drives the driving wheel 1 Running, the driving wheel 1 drives the driven wheel 9 to rotate and drives the fine grinding roller 18 to rotate.

Fig. 4 and Fig. 5 show that crushing blade belts 17.1, 17.2, 17.3 are provided on the fine grinding roller 18, and the grinding blade belts 17.1, 17.2, 17.3 are spirally wound on the fine grinding roller 18 along the outer cylindrical surface of the fine grinding roller In addition, the spacing between the crushing blade belts is evenly set. Several crushing blades 17.11 are evenly arranged on each crushing blade belt. Five cutting plates 16.1 are evenly arranged longitudinally on the inner wall of the cylindrical surface of the fine crushing bin.

A coarse filter 19 is installed at the connection between the coarse crushing bin 3 and the fine crushing bin 10, a discharge hopper 11 is provided at the bottom of the fine crushing bin 10, the fine crushing bin 10 communicates with the discharge hopper 11, and between the fine crushing bin 10 and the discharge hopper 11 Fine filter 20 is also provided.

The dry slag enters the coarse crushing bin 3 from the feed hopper 2 and is firstly crushed. After preliminary crushing, a coarse-sized slag powder is formed, which is filtered by the coarse filter 19 and then enters the fine crushing bin 10 for the second crushing. After that, a slag powder with a finer particle size is formed, which is filtered through a fine filter 20 and discharged from the discharge hopper 11.

In this example, the driving wheel 1 and the driven wheel 9 are linked by a belt, and the driving wheel 1 drives the driven wheel 9 to rotate through the belt.

Claims

A slag crushing device for power plant boiler dry slag includes a frame and a crushing silo driven by a motor, characterized in that the crushing silo includes a coarse crushing silo and a fine crushing silo,

The frame is provided with an upper support plate in the middle, the coarse crushing bin is installed and fixed on the upper support plate, a rough grinding rotor is laterally arranged inside the rough crushing bin, and both ends of the central axis of the rough grinding rotor The bearing is installed on the two side walls of the coarse crushing bin. The upper part of the coarse crushing bin is provided with a feed hopper. The dry slag enters the coarse crushing bin from the feed hopper. The left end of the central axis of the rough grinding roller is provided with a driving wheel , The rough grinding roller is driven by a motor through a driving wheel;

The outer cylindrical surface of the rough grinding roller is provided with a first row of impact hammers, a second row of impact hammers, a third row of impact hammers and a fourth row of impact hammers, wherein the first row of impact hammers and the third row of impact hammers The row of hammers and the center axis of the rough grinding roller are on the same plane while the hammers of the second row, hammers and fourth row are on the other plane and the two planes intersect perpendicularly;

The rack is provided with a lower support plate at the lower part, the fine crushing bin is installed and fixed on the lower support plate, the fine crushing bin is located below the coarse crushing bin, and the fine crushing rotator is arranged laterally inside the fine crushing bin The two ends of the central shaft of the shaft are installed on the left and right side walls of the fine crushing bin through bearings. The left end of the central shaft of the fine grinding roller is fixed with a driven wheel. The motor drives the driving wheel to run. The driving wheel drives the driven wheel to rotate to drive the fine grinding wheel. Roller rotation

Several groups of crushing blade belts are provided on the fine grinding rotating roller, and each crushing blade belt is spirally wound on the fine grinding rotating roller along the outer cylindrical surface of the fine grinding rotating roller and the spacing between the respective grinding blade belts is evenly set. Several crushing blades are evenly arranged on the crushing blade belt, and several cutting and grinding plates are evenly arranged longitudinally on the inner wall of the cylindrical surface of the fine crushing bin;

A coarse filter is installed at the junction of the coarse crushing bin and the fine crushing bin, and a discharge hopper is provided at the bottom of the fine crushing bin. The fine crushing bin communicates with the discharge hopper, and between the fine crushing bin and the discharge hopper There is also a fine filter in the room;

The dry slag enters the coarse crushing bin from the feed hopper and is firstly crushed first. After preliminary crushing, a coarse slag powder is formed. After being filtered through the coarse filter, it enters the fine crushing bin and then is crushed in the second stage. The fine slag powder is finally discharged from the discharge hopper after being filtered through a fine filter.
The slag crushing device for dry slag of power plant boilers according to claim 1, characterized in that the first row of hammers and the third row of hammers have the same hammer distribution, and the second The impact hammers on the platoon hammers and the fourth platoon hammers have the same distribution. The rams on the first and second tier hammers are the same as the third and fourth tier hammers. The hammers on the hammer are staggered.
The slag crushing device for dry slag of a power plant boiler according to claim 1, wherein the driving wheel drives the driven wheel to rotate through a belt.