CN209501815U - A slag crushing device for dry slag of a power plant boiler - Google Patents

Abstract

A slag crushing device for dry slag of a power plant boiler, comprising a frame and a crushing bin driven by a motor, characterized in that the crushing bin includes a coarse crushing bin and a fine crushing bin, and a feeding hopper is arranged on the upper part of the coarse crushing bin , the dry slag enters the coarse crushing bin from the feeding hopper, a coarse screen is installed at the junction between the coarse crushing bin and the fine crushing bin, a discharge hopper is arranged at the bottom of the fine crushing bin, and the fine crushing bin and the The discharge hoppers are connected, and a fine filter screen is also arranged between the fine crushing bin and the discharging hopper; the dry slag enters the coarse crushing bin from the feeding hopper for first-stage crushing, and after preliminary crushing, a coarser slag is formed The powder is filtered by the coarse filter and then enters the fine crushing bin for second-stage crushing, and then forms a finer slag powder, which is finally filtered by the fine filter and discharged from the discharge hopper. It effectively solves the problems of the existing power plant boiler dry slag and slag crushing due to only one-stage crushing, different particle sizes of slag powder, inability to crush at one time and large wear on the cutter head.

Description

A slag crushing device for dry slag of a power plant boiler

technical field

The utility model relates to dry slag crushing equipment, in particular to a slag crushing device for the dry slag of a power plant boiler.

Background technique

In power generation equipment, the slag produced by the boiler after condensing without any treatment is called dry slag. It is a by-product of boiler production. The application of dry slag depends on specific conditions. Recycling dry slag can achieve certain economic benefits. It can crush the dry slag into a certain size and size instead of gravel 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-time crushing, which has a large working load. , the size of the ash and slag is different, it cannot be crushed at one time, and the cutter head wears a lot.

Utility model content

In view of the deficiencies of the prior art, the utility model provides a slag crushing device for the dry slag of a power plant boiler, which comprises a frame and a crushing bin driven by a motor, and is characterized in that the crushing bin comprises a coarse crushing bin and a fine crushing bin, From the feed hopper, the dry slag first enters the coarse crushing bin for first-stage crushing. After preliminary crushing, it forms coarser slag powder, and then enters the fine crushing bin for second-stage crushing. After further crushing, it forms finer slag powder. The slag powder is finally discharged from the discharge hopper. It effectively solves the problems of the existing power plant boiler dry slag and slag crushing due to only one-stage crushing, different particle sizes of slag powder, inability to crush at one time and large wear on the cutter head.

The technical scheme adopted by the utility model to solve the technical problem is that a slag crushing device for the dry slag of a power plant boiler comprises a frame and a crushing bin driven by a motor, wherein the crushing bin comprises 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 board, and a coarse grinding roller is laterally arranged inside the coarse crushing bin, and both ends of the central axis of the coarse grinding roller are arranged. It is installed on the two side walls of the primary crushing bin through bearings. The upper part of the primary crushing bin is provided with a feeding hopper, and the dry slag enters the primary crushing bin from the feeding hopper. The left end of the central shaft of the primary grinding roller is provided with a driving wheel. , the rough grinding roller is driven by the motor through the driving wheel;

The outer cylindrical surface of the rough grinding roller is longitudinally arranged with a first row of hammers, a second row of hammers, a third row of hammers and a fourth row of hammers, wherein the first row of hammers, the third row of hammers The row hammers and the central axis of the rough grinding roller are in the same plane, and the second row of hammers, the fourth row of hammers and the central axis of the rough grinding roller are in another plane, and the front and rear planes are perpendicularly intersected;

The lower part of the frame is provided with a lower support plate, 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 a fine grinding roller is laterally arranged inside the fine grinding bin. The two ends of the central shaft of the grinding wheel 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, and the driving wheel drives the driven wheel to rotate to drive the fine grinding wheel. roll rotation;

Several groups of pulverizing blade belts are arranged on the fine grinding rotating roller, and each pulverizing 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 pulverizing blade belts is uniform. A number of crushing blades are evenly arranged on the crushing blade belt, and a number of cutting and grinding plates are evenly arranged longitudinally on the inner wall of the cylindrical surface of the fine crushing bin;

A coarse filter screen is installed at the junction of the coarse crushing bin and the fine crushing bin, a discharge hopper is arranged at the bottom of the fine crushing bin, the fine crushing bin is communicated with the discharging hopper, and the fine grinding bin and the discharging hopper are connected There is also a fine filter in the room;

The dry slag enters the coarse crushing bin from the feed hopper for first-stage crushing. After preliminary crushing, a coarser slag powder is formed. After being filtered by the coarse filter, it enters the fine crushing bin for second-stage crushing. The fine slag powder is finally discharged from the discharge hopper after being filtered by a fine filter.

In the preferred solution of the utility model, the distribution of the hammers on the first row of hammers and the hammers in the third row is the same, and the distribution of hammers on the second row of hammers and the fourth row of hammers Similarly, the hammers on the first row of hammers and the hammers on the second row are staggered from the hammers on the third row and the fourth row of hammers.

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

Beneficial effects of the utility model: The utility model provides a slag crushing device for the dry slag of a boiler in a power plant. By setting a coarse crushing bin and a fine crushing bin, the dry slag enters the coarse crushing bin from the feeding hopper and is firstly crushed in the first stage. After initial pulverization, slag powder with a coarser particle size is formed, and then enters the fine crushing bin for second-stage pulverization, and then a finer slag powder is formed, which is finally discharged from the discharge hopper. It effectively solves the problems that the existing power plant boiler ash and slag is crushed only in one stage, the particle size of the slag powder is different, cannot be crushed at one time, and the cutter head is greatly worn.

Description of drawings

1 to 5 are schematic structural views of the first embodiment of the present utility model; wherein FIG. 1 is a schematic view of the overall structure, FIGS. 2 to 5 are schematic views of a partial structure, and FIGS. 3 and 5 are schematic enlarged views of the structure; 2 Left side view, Figure 5 is the left side view of Figure 4.

In the picture:

1. Driving wheel;

2. Feed hopper;

3. Coarse crushing warehouse;

4. Rack;

5. Upper support plate;

6. Lower support plate;

7. Motor;

8. Motor seat;

9. Driven wheel;

10. Fine crushing warehouse;

11. Outlet hopper;

12.1 first row of hammers, 12.11 hammers,

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

13.1 Mounting seat, 13.11 Pin shaft;

14. Coarse grinding roller;

15. Bearing;

16.1 Cutting board;

17.1, 17.2, 17.3 Crushing knife belt, 17.11 Crushing knife belt piece;

18. Fine grinding roller;

19. Coarse filter;

20. Fine strainer.

Detailed ways

1 to 5 are schematic structural views of the first embodiment of the present utility model; wherein FIG. 1 is a schematic view of the overall structure, FIGS. 2 to 5 are schematic views of a partial structure, and FIGS. 3 and 5 are schematic enlarged views of the structure; 2 Left side view, Figure 5 is the left side view of Figure 4.

The figure shows that, in this example, a slag crushing device for dry slag of a power plant boiler includes a frame 4 and a crushing bin driven by a motor. As shown in the figure, 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 bin 3 is installed and fixed on the upper support plate 5. The coarse grinding wheel 14 is laterally arranged inside the coarse crushing bin 3, and both ends of the central axis of the coarse grinding roll 14 pass through. The bearings 15 are installed on the two side walls of the coarse crushing bin 3, the upper part of the primary crushing bin 3 is provided with a feeding hopper 2, the dry slag enters the primary crushing bin 3 from the feeding hopper 2, and the left end of the central shaft of the coarse grinding roller 14 is fixed with a Driving wheel 1, the driving wheel 1 is arranged on the left side of the coarse crushing bin 3, and the coarse grinding roller 14 is driven by the motor 7 through the driving wheel 1;

Figures 2 and 3 show that the outer side of the rough grinding roller 14 is longitudinally arranged 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. The first row of hammers 12.1, the third row of hammers 12.3 and the central axis of the rough grinding roller 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 and the front and rear 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, while the hammers on the second row of hammers 12.2 and the fourth row of hammers 12.4 have the same distribution. 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 those 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 crushed. FIG. 2 shows that the hammer 12.11 is mounted on the mounting seat 13.1 through the pin 13.11, and the mounting seat 13.1 is fixed on the rough grinding roller 14. The pin shaft connection between the hammer and the rough grinding roller 14 can make the hammer have a buffering effect when the slag is hit, and reduce the adverse effect of the impact force.

The frame 4 is provided with a lower support plate 6 at the lower part, the fine crushing bin 10 is installed and fixed on the lower support plate 6, and the fine crushing bin 10 is located under the coarse crushing bin 3. 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 shaft of the fine grinding roller 18 is provided with a driven wheel 9, and the driven wheel 9 is set on the left side of the fine crushing bin 10. The motor 7 drives the driving wheel 1 running, the driving wheel 1 drives the driven wheel 9 to rotate to drive the fine grinding roller 18 to rotate.

Figures 4 and 5 show that crushing blade belts 17.1, 17.2, 17.3 are arranged on the fine grinding roller 18, and the crushing 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 And the spacing between each crushing blade belt is evenly set, several crushing blades 17.11 are evenly arranged on each crushing blade belt, and 5 cutting and grinding plates 16.1 are evenly arranged longitudinally on the inner wall of the cylindrical surface of the fine crushing bin.

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

The dry slag enters the coarse crushing bin 3 from the feeding hopper 2 for first-stage pulverization. After preliminary pulverization, a slag powder with a relatively coarse particle size is formed. After being filtered by the coarse filter screen 19, it enters the fine crushing bin 10 for second-stage pulverization. Afterwards, slag powder with finer particle size is formed, which is filtered by the fine filter screen 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 (3)

1. a slag crushing device for the dry slag of a power plant boiler, comprising a frame and a crushing bin driven by a motor, wherein the crushing bin comprises 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 board, and a coarse grinding roller is laterally arranged inside the coarse crushing bin, and both ends of the central axis of the coarse grinding roller are arranged. It is installed on the two side walls of the primary crushing bin through bearings. The upper part of the primary crushing bin is provided with a feeding hopper, and the dry slag enters the primary crushing bin from the feeding hopper. The left end of the central shaft of the primary grinding roller is provided with a driving wheel. , the rough grinding roller is driven by the motor through the driving wheel; The outer cylindrical surface of the rough grinding roller is longitudinally arranged with a first row of hammers, a second row of hammers, a third row of hammers and a fourth row of hammers, wherein the first row of hammers, the third row of hammers The row hammers and the central axis of the rough grinding roller are in the same plane, and the second row of hammers, the fourth row of hammers and the central axis of the rough grinding roller are in another plane, and the front and rear planes are perpendicularly intersected; The lower part of the frame is provided with a lower support plate, 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 a fine grinding roller is laterally arranged inside the fine grinding bin. The two ends of the central shaft of the grinding wheel 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, and the driving wheel drives the driven wheel to rotate to drive the fine grinding wheel. roll rotation; Several groups of pulverizing blade belts are arranged on the fine grinding rotating roller, and each pulverizing 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 pulverizing blade belts is uniform. A number of crushing blades are evenly arranged on the crushing blade belt, and a number of cutting and grinding plates are evenly arranged longitudinally on the inner wall of the cylindrical surface of the fine crushing bin; A coarse filter screen is installed at the junction of the coarse crushing bin and the fine crushing bin, a discharge hopper is arranged at the bottom of the fine crushing bin, the fine crushing bin is communicated with the discharging hopper, and the fine grinding bin and the discharging hopper are connected There is also a fine filter in the room; The dry slag enters the coarse crushing bin from the feed hopper for first-stage crushing. After preliminary crushing, a coarser slag powder is formed. After being filtered by the coarse filter, it enters the fine crushing bin for second-stage crushing. The fine slag powder is finally discharged from the discharge hopper after being filtered by a fine filter. 2 . The slag crushing device for the dry slag of a power plant boiler according to claim 1 , wherein the first row of beating hammers and the third row of beating hammers have the same distribution of beating hammers, and the The hammers in the second row and the hammers in the fourth row have the same distribution. The hammers in the first row and the hammers in the second row are the same as the hammers in the third row and the fourth row. The hammers on the hammer are staggered. 3 . The slag crushing device for the dry slag of a power plant boiler according to claim 1 , wherein the driving wheel drives the driven wheel to rotate through a belt. 4 .