CN111036380A

CN111036380A - Coal cinder milling equipment for boiler burning

Info

Publication number: CN111036380A
Application number: CN201911396663.9A
Authority: CN
Inventors: 高红
Original assignee: Individual
Current assignee: Individual
Priority date: 2019-12-30
Filing date: 2019-12-30
Publication date: 2020-04-21

Abstract

The invention discloses a coal briquette grinding device for boiler combustion, which comprises a device shell, a feeding hole, a discharging hole and a grinding mechanism, wherein the feeding hole is formed in the device shell; the upper end and the lower end of the device shell are respectively provided with a feed inlet and a discharge outlet, and a crushing mechanism is arranged in the device shell; the crushing mechanism comprises an upper fixed plate, a lower fixed plate, a left crushing sliding block, a right crushing sliding block and a crushing driving mechanism. The coal briquette grinding device for boiler combustion can further grind coal briquettes by arranging the grinding mechanism, so that the combustion requirement is met; through setting up crocus mechanism, can thoroughly smash the coal cinder, grind the coal cinder into powdered to make its burning more violent.

Description

Coal cinder milling equipment for boiler burning

Technical Field

The invention relates to the field of boilers, in particular to a coal briquette grinding device for boiler combustion.

Background

When using boilers, fuel is required, most of which uses coal as fuel. In order to transport coal conveniently, when coal is purchased in a factory, the coal is crushed into blocks only by primary crushing, so that the transportation is convenient. When coal is used in a boiler of a factory, most of the coal is pulverized into small pieces by further pulverizing the large pieces of coal, and the small pieces of coal are placed in a combustion chamber to be automatically combusted. However, because the relative contact area between the lump coal and the air is small, a large amount of time is consumed for sufficient combustion, the combustion effect is poor, and the coal cannot be sufficiently combusted. In order to achieve sufficient combustion and improve the combustion effect, it is necessary to further pulverize coal and grind the pulverized coal into powder, thereby causing intense combustion.

Disclosure of Invention

The present invention has been made to solve the above-mentioned problems occurring in the background art.

In order to achieve the purpose, the invention provides the following technical scheme:

a coal briquette grinding device for boiler combustion comprises a device shell, a feeding hole, a discharging hole and a grinding mechanism; the upper end and the lower end of the device shell are respectively provided with a feed inlet and a discharge outlet, and a crushing mechanism is arranged in the device shell; the crushing mechanism comprises an upper fixing plate, a lower fixing plate, a left crushing sliding block, a right crushing sliding block and a crushing driving mechanism; an upper fixing plate and a lower fixing plate are sequentially fixed in the device shell from top to bottom, gaps are reserved between the left end and the right end of the lower fixing plate and the inner wall of the device shell, and the gaps are wide in block coal diameter; a left grinding sliding block and a right grinding sliding block are arranged at the left end and the right end between the upper fixing plate and the lower fixing plate in a fitting and sliding manner; the outer sides of the left grinding sliding block and the right grinding sliding block are arranged to be inclined, and the inner wall of the device shell positioned at the outer sides of the left grinding sliding block and the right grinding sliding block is arranged to be inclined to match with the inner wall; a crushing driving mechanism is also arranged between the left crushing sliding block and the right crushing sliding block; the crushing driving mechanism comprises a crushing motor, a driving bevel gear, a driven bevel gear, a limiting sleeve, a rotating screw rod, a left sleeve, a right sleeve, a left connecting rod and a right connecting rod; the grinding motor is fixed on the lower fixing plate, and a driving bevel gear is fixed at the rotating end of the grinding motor; a driven bevel gear engaged with the driving bevel gear is fixed on the rotating screw rod; the rotary screw rod is rotatably arranged in the device shell through a plurality of limiting sleeves fixed in the device shell; reciprocating chutes are symmetrically arranged at the left end and the right end of the rotating screw rod; the left sleeve and the right sleeve which are matched with the reciprocating sliding grooves at the left end and the right end of the rotating screw rod are rotationally arranged on the rotating screw rod; and the left sleeve and the right sleeve are fixed on the left grinding sliding block and the right grinding sliding block through a plurality of left connecting rods and right connecting rods respectively.

As a further scheme of the invention: and a plurality of grinding fragments are arranged on the outer sides of the left grinding sliding block and the right grinding sliding block and the inner wall of the corresponding device shell in a crossed manner.

As a still further scheme of the invention: a grinding mechanism is also arranged in the device shell; the powder grinding mechanism comprises a powder grinding surface, a powder grinding connecting rod, a powder grinding block, a return spring and a fixed limiting block; the grinding surface is positioned below the lower fixing plate, and two ends of the grinding surface are arranged in upper end sliding grooves formed in two sides in the device shell in a sliding mode; the bottom of the upper end sliding groove is connected with two ends of the grinding surface through a return spring; a plurality of through holes are formed in the grinding surface, and the inner diameter of each through hole is smaller than the width of a gap on two sides of the lower fixing plate; the powder grinding connecting rod penetrates through the powder grinding surface in a sliding mode, and a powder grinding block is fixed at one end, located above the powder grinding surface, of the powder grinding connecting rod; the bottom of the grinding block is an arc-shaped bulge; the grinding surface matched with the bottom of the grinding block is provided with an arc-shaped concave plate; a driving mechanism for driving the grinding connecting rod to move up and down is also arranged in the device shell; and the inner wall of the device shell positioned on one side of the upper end sliding groove is also provided with a fixed limiting block for limiting the milling surface.

As a still further scheme of the invention: the driving mechanism comprises a driving motor, a sector gear and a movable plate; the driving motor is fixed on the outer side of the device shell, and the rotating end of the driving motor rotatably penetrates through the side wall of the device shell and is connected with the sector gear rotatably arranged in the device shell; the sector gear is rotatably arranged in the opening side of the movable plate, and the movable plate is arranged in the device shell in a sliding mode along the vertical direction; racks meshed with the sector gear are arranged at two ends of the opening side of the movable plate, and when teeth at one end of the sector gear are in contact with the rack on one side of the movable plate, the teeth at the other end of the sector gear are separated from the rack on the other side of the movable plate; the upper end of fly leaf is fixed with the bottom of crocus connecting rod.

As a still further scheme of the invention: two sides of the bottom of the inner wall of the device shell are also provided with lower sliding grooves; two ends of a discharge plate which is attached to the inner wall of the device shell in a sliding manner are respectively arranged in the two lower sliding grooves in a sliding manner; a lower connecting rod is fixed above the discharge plate and is fixed at the lower end of the movable plate; go out the flitch slope setting, and the discharge gate is located the top of the lower one side of flitch.

As a still further scheme of the invention: the upper end of the upper fixing plate is arranged to be upward arc-shaped.

As a still further scheme of the invention: the two ends of the milling surface are fixedly provided with upper sliding groove baffles, the upper sliding groove baffles are attached to the inner wall of the device shell, and the upper sliding groove positioned above the milling surface is sealed; the lower side of the discharging plate is fixed with a lower sliding chute baffle, the lower sliding chute baffle is attached to the inner wall of the device shell, and the lower sliding chute above the discharging plate is sealed.

Compared with the prior art, the invention has the beneficial effects that: by arranging the crushing mechanism, the coal blocks can be further crushed, so that the combustion requirement is met; through setting up crocus mechanism, can thoroughly smash the coal cinder, grind the coal cinder into powdered to make its burning more violent.

Drawings

FIG. 1 is a schematic structural view of a coal pulverizer for combustion in a boiler.

Fig. 2 is an enlarged schematic view of a portion a of fig. 1.

FIG. 3 is a schematic view showing the structure of a driving mechanism in the coal pulverizer for combustion in a boiler.

FIG. 4 is a schematic view showing the structure of a rotary feed screw in the coal pulverizer for boiler combustion.

In the figure: 1-device shell, 2-feeding port, 3-discharging port, 4-upper fixed plate, 5-lower fixed plate, 6-left grinding sliding block, 7-right grinding sliding block, 8-ground fragment, 9-grinding motor, 10-driving bevel gear, 11-driven bevel gear, 12-limit sleeve, 13-rotating screw rod, 14-left sleeve and 15-right sleeve, 16-left connecting rod, 17-right connecting rod, 18-grinding surface, 19-grinding connecting rod, 20-grinding block, 21-reset spring, 22-fixed limiting block, 23-upper sliding groove baffle, 24-driving motor, 25-sector gear, 26-movable plate, 27-lower connecting rod, 28-discharging plate and 29-lower sliding groove baffle.

Detailed Description

The technical solution of the present invention will be described in further detail with reference to specific embodiments.

Example 1

Referring to fig. 1-4, the present embodiment provides a coal pulverizer for boiler combustion, which includes a housing 1, a feeding port 2, a discharging port 3, and a pulverizing mechanism; the upper end and the lower end of the device shell 1 are respectively provided with a feed inlet 2 and a discharge outlet 3, and a crushing mechanism is arranged in the device shell; the crushing mechanism comprises an upper fixing plate 4, a lower fixing plate 5, a left crushing sliding block 6, a right crushing sliding block 7 and a crushing driving mechanism; an upper fixing plate 4 and a lower fixing plate 5 are sequentially fixed in the device shell 1 from top to bottom, gaps are reserved between the left end and the right end of the lower fixing plate 5 and the inner wall of the device shell 1, and the gaps are wide in the diameter of the lump coal; a left grinding sliding block 6 and a right grinding sliding block 7 are arranged between the upper fixing plate 4 and the lower fixing plate 5 at the left end and the right end in a fitting and sliding manner; the outer sides of the left grinding sliding block 6 and the right grinding sliding block 7 are designed to be inclined, and the inner wall of the device shell 1 positioned at the outer sides of the left grinding sliding block 6 and the right grinding sliding block 7 is designed to be inclined to match with the inner wall; a crushing driving mechanism is also arranged between the left crushing sliding block 6 and the right crushing sliding block 7; the crushing driving mechanism comprises a crushing motor 9, a driving bevel gear 10, a driven bevel gear 11, a limiting sleeve 12, a rotating screw rod 13, a left sleeve 14, a right sleeve 15, a left connecting rod 16 and a right connecting rod 17; the grinding motor 9 is fixed on the lower fixing plate 5, and a driving bevel gear 10 is fixed at the rotating end of the grinding motor; a driven bevel gear 11 engaged with the driving bevel gear 10 is fixed on a rotating screw rod 13; the rotary screw 13 is rotatably arranged in the device shell 1 through a plurality of limiting sleeves 12 fixed in the device shell 1; the left end and the right end of the rotating screw rod 13 are symmetrically provided with reciprocating chutes; a left sleeve 14 and a right sleeve 15 which are matched with the reciprocating sliding grooves at the left end and the right end of the rotating screw rod 13 are rotatably arranged on the rotating screw rod 13; the left sleeve 14 and the right sleeve 15 are respectively fixed on the left grinding sliding block 6 and the right grinding sliding block 7 through a plurality of left connecting rods 16 and right connecting rods 17; so set up, after adding coal from feed inlet 2, grinding motor 9 begins to work, thereby drive bevel gear 10 to rotate, thereby make driven bevel gear 11 rotate, thereby rotate lead screw 13 and rotate, because left sleeve 14 and right sleeve 15 can't rotate, thereby drive left sleeve 14 and right sleeve 15 reciprocal relatively close to and keep away from, thereby drive left grinding sliding block 6 and right grinding sliding block 7 reciprocal relatively close to and keep away from, thereby make left grinding sliding block 6 and right grinding sliding block 7 reciprocal and its corresponding device shell 1's inner wall close to and keep away from, thereby can extrude coal, make it smash, the coal after smashing falls to the bottom of device shell 1 from the clearance of bottom plate 5 both sides.

In order to further improve the crushing effect, a plurality of crushing blocks 8 are arranged on the outer sides of the left crushing sliding block 6 and the right crushing sliding block 7 and the inner wall of the device shell 1 corresponding to the outer sides in a crossed mode, and the crushing effect can be further improved through the crossed crushing of the crushing blocks 8.

In order to further improve the crushing effect, a grinding mechanism is also arranged inside the device shell 1; the powder grinding mechanism comprises a powder grinding surface 18, a powder grinding connecting rod 19, a powder grinding block 20, a return spring 21 and a fixed limiting block 22; the grinding surface 18 is positioned below the lower fixing plate 5, and two ends of the grinding surface are arranged in upper end sliding grooves formed in two sides in the device shell 1 in a sliding mode; the bottom of the upper end sliding groove is connected with two ends of the milling surface 18 through a return spring 21; a plurality of through holes are formed in the grinding surface 18, and the inner diameter of each through hole is smaller than the width of a gap on two sides of the lower fixing plate 5; the powder grinding connecting rod 19 penetrates through the powder grinding surface 18 in a sliding mode, and a powder grinding block 20 is fixed at one end, located above the powder grinding surface 18, of the powder grinding connecting rod 19; the bottom of the grinding block 20 is an arc-shaped bulge; the milling surface 18 matched with the bottom of the milling block 20 is provided with an arc concave plate; a driving mechanism for driving the grinding connecting rod 19 to move up and down is also arranged in the device shell 1; the inner wall of the device shell 1 positioned at one side of the upper end sliding groove is also provided with a fixed limiting block 22 for limiting the milling surface 18; set up like this, when 19 downstream of actuating mechanism drive crocus connecting rod, drive crocus piece 20 downstream, be full of coal between this moment crocus piece 20 and the crocus face 18, when 19 downstream of actuating mechanism drive crocus connecting rod to the bottom, the both ends of crocus face 18 and the upper end laminating of fixed stopper 22, the upper surface laminating of crocus piece 20 and crocus face 18 this moment, thereby can carry out further extrusion to coal and smash, 19 upward movements of later actuating mechanism drive crocus connecting rod, under reset spring 21's effect, crocus face 18 upward movement, and can be convenient for discharge the through-hole in 18 from the crocus face with the good buggy of having smashed in the crocus face 18.

The driving mechanism comprises a driving motor 24, a sector gear 25 and a movable plate 26; the driving motor 24 is fixed on the outer side of the device shell 1, and the rotating end of the driving motor rotates to penetrate through the side wall of the device shell 1 and is connected with a sector gear 25 which is rotatably arranged in the device shell 1; the sector gear 25 is rotatably provided in the opening side of the movable plate 26, and the movable plate 26 is slidably provided in the apparatus case 1 in the vertical direction; racks meshed with the sector gear 25 are arranged at two ends of the opening side of the movable plate 26, and when teeth at one end of the sector gear 25 are in contact with the rack on one side of the movable plate 26, teeth at the other end are separated from the rack on the other side of the movable plate 26; the upper end of the movable plate 26 is fixed with the bottom of the grinding powder connecting rod 19; so arranged, when the driving motor 24 is operated, the sector gear 25 is driven to rotate, thereby driving the movable plate 26 to reciprocate up and down, and further driving the grinding powder connecting rod 19 to reciprocate up and down.

In order to facilitate the pulverized coal to be completely discharged, two sides of the bottom of the inner wall of the device shell 1 are also provided with lower sliding grooves; two ends of a discharging plate 28 which is attached to the inner wall of the device shell 1 and is arranged in a sliding manner are respectively arranged in the two lower sliding grooves in a sliding manner; a lower connecting rod 27 is fixed above the discharging plate 28, and the lower connecting rod 27 is fixed at the lower end of the movable plate 26; the discharging plate 28 is obliquely arranged, and the discharging port 3 is positioned above the lower side of the discharging plate 28; the arrangement is such that when the movable plate 26 moves up and down, the discharge plate 28 is driven to move up and down, thereby facilitating the shaking out of the pulverized coal on the discharge plate 28.

In order to prevent the coal fed from the feed port 2 from staying on the upper fixing plate 4, the upper end of the upper fixing plate 4 is formed in an upward arc shape.

The working principle of the embodiment is as follows: after coal is added from the feed port 2, the grinding motor 9 is operated to rotate the drive bevel gear 10, thereby rotating the driven bevel gear 11, thereby rotating the rotary screw 13, and since the left sleeve 14 and the right sleeve 15 cannot rotate, thereby driving the left sleeve 14 and the right sleeve 15 to reciprocate relatively close to and away from each other, thereby driving the left grinding sliding block 6 and the right grinding sliding block 7 to reciprocate relatively close to and away from the inner wall of the device case 1 corresponding thereto, thereby being capable of pressing and grinding the coal, and the ground coal falls down to the bottom of the device case 1 from the gap between both sides of the lower fixing plate 5. When 19 downstream of actuating mechanism drive crocus connecting rod, drive crocus piece 20 downstream, be full of coal between this moment crocus piece 20 and the crocus face 18, when 19 downstream of actuating mechanism drive crocus connecting rod to the bottom, the both ends of crocus face 18 and the upper end laminating of fixed stopper 22, the upper surface laminating of crocus piece 20 and crocus face 18 this moment, thereby can carry out further extrusion to coal and smash, 19 upstream of later actuating mechanism drive crocus connecting rod, under reset spring 21's effect, crocus face 18 upstream, and can be convenient for discharge the through-hole in 18 from the crocus face of pulverized coal that has smashed in the crocus face 18.

Example 2

The embodiment is further improved on the basis of the embodiment 1, and the improvement is as follows: in order to prevent the coal blocks and the coal powder from falling into the upper sliding chute and the lower sliding chute respectively, so that the grinding surface 18 and the discharging plate 28 cannot move; the two ends of the grinding surface 18 are fixed with upper sliding groove baffles 23, the upper sliding groove baffles 23 are attached to the inner wall of the device shell 1, and the upper sliding groove above the grinding surface 18 is sealed; the lower side of the discharging plate 28 is fixed with a lower sliding chute baffle 29, and the lower sliding chute baffle 29 is attached to the inner wall of the device shell 1 and seals the lower sliding chute above the discharging plate 28.

While the preferred embodiments of the present invention have been described in detail, the present invention is not limited to the above embodiments, and various changes can be made without departing from the spirit of the present invention within the knowledge of those skilled in the art.

Claims

1. A coal briquette grinding device for boiler combustion comprises a device shell (1), a feeding hole (2), a discharging hole (3) and a grinding mechanism; the upper end and the lower end of the device shell (1) are respectively provided with a feed inlet (2) and a discharge outlet (3), and a crushing mechanism is arranged in the device shell; the crushing mechanism is characterized by comprising an upper fixing plate (4), a lower fixing plate (5), a left crushing sliding block (6), a right crushing sliding block (7) and a crushing driving mechanism; an upper fixing plate (4) and a lower fixing plate (5) are sequentially fixed in the device shell (1) from top to bottom, gaps are reserved between the left end and the right end of the lower fixing plate (5) and the inner wall of the device shell (1), and the gaps are wide in the diameter of the lump coal; a left grinding sliding block (6) and a right grinding sliding block (7) are arranged between the upper fixing plate (4) and the lower fixing plate (5) at the left end and the right end in a fitting and sliding manner; the outer sides of the left grinding sliding block (6) and the right grinding sliding block (7) are arranged to be inclined, and the inner wall of the device shell (1) positioned at the outer sides of the left grinding sliding block (6) and the right grinding sliding block (7) is arranged to be inclined to match with the inner wall; a crushing driving mechanism is also arranged between the left crushing sliding block (6) and the right crushing sliding block (7); the crushing driving mechanism comprises a crushing motor (9), a driving bevel gear (10), a driven bevel gear (11), a limiting sleeve (12), a rotating screw rod (13), a left sleeve (14), a right sleeve (15), a left connecting rod (16) and a right connecting rod (17); the grinding motor (9) is fixed on the lower fixing plate (5), and a driving bevel gear (10) is fixed at the rotating end of the grinding motor; a driven bevel gear (11) meshed with the driving bevel gear (10) is fixed on a rotating screw rod (13); the rotary screw rod (13) is rotatably arranged in the device shell (1) through a plurality of limiting sleeves (12) fixed in the device shell (1); the left end and the right end of the rotating screw rod (13) are symmetrically provided with reciprocating chutes; a left sleeve (14) and a right sleeve (15) which are matched with the reciprocating sliding grooves at the left end and the right end of the rotating screw rod (13) are rotatably arranged on the rotating screw rod (13); the left sleeve (14) and the right sleeve (15) are respectively fixed on the left grinding sliding block (6) and the right grinding sliding block (7) through a plurality of left connecting rods (16) and right connecting rods (17).

2. The coal pulverizer for boiler combustion according to claim 1, wherein a plurality of pulverized pieces (8) are provided to intersect on the outer sides of the left and right grinding sliding blocks (6, 7) and the inner walls of the device case (1) corresponding thereto.

3. The coal cinder milling apparatus for boiler combustion according to claim 2, characterized in that a milling mechanism is further provided inside the apparatus housing (1); the powder grinding mechanism comprises a powder grinding surface (18), a powder grinding connecting rod (19), a powder grinding block (20), a return spring (21) and a fixed limiting block (22); the grinding surface (18) is positioned below the lower fixing plate (5), and two ends of the grinding surface are arranged in upper end sliding grooves formed in two sides in the device shell (1) in a sliding mode; the bottom of the upper end sliding groove is connected with two ends of the milling surface (18) through a return spring (21); a plurality of through holes are formed in the grinding surface (18), and the inner diameter of each through hole is smaller than the width of a gap on two sides of the lower fixing plate (5); the powder grinding connecting rod (19) penetrates through the powder grinding surface (18) in a sliding mode, and a powder grinding block (20) is fixed at one end, located above the powder grinding surface (18), of the powder grinding connecting rod (19); the bottom of the grinding block (20) is an arc-shaped bulge; the grinding surface (18) matched with the bottom of the grinding block (20) is provided with an arc-shaped concave plate; a driving mechanism for driving the grinding connecting rod (19) to move up and down is also arranged in the device shell (1); the inner wall of the device shell (1) positioned on one side of the upper end sliding groove is also provided with a fixed limiting block (22) for limiting the grinding surface (18).

4. The apparatus as claimed in claim 3, wherein the drive mechanism includes a drive motor (24), a sector gear (25) and a movable plate (26); the driving motor (24) is fixed on the outer side of the device shell (1), and the rotating end of the driving motor rotates to penetrate through the side wall of the device shell (1) and is connected with a sector gear (25) which is rotatably arranged in the device shell (1); the sector gear (25) is rotatably arranged in the opening side of the movable plate (26), and the movable plate (26) is slidably arranged in the device shell (1) along the vertical direction; racks meshed with the sector gear (25) are arranged at two ends of the opening side of the movable plate (26), and when teeth at one end of the sector gear (25) are in contact with the racks at one side of the movable plate (26), teeth at the other end are separated from the racks at the other side of the movable plate (26); the upper end of the movable plate (26) is fixed with the bottom of the grinding powder connecting rod (19).

5. The coal cinder grinding apparatus for boiler combustion according to claim 4, wherein lower sliding grooves are further provided on both sides of the bottom of the inner wall of the apparatus housing (1); two ends of a discharging plate (28) which is attached to the inner wall of the device shell (1) in a sliding manner are respectively arranged in the two lower sliding grooves in a sliding manner; a lower connecting rod (27) is fixed above the discharging plate (28), and the lower connecting rod (27) is fixed at the lower end of the movable plate (26); go out flitch (28) slope setting, and discharge gate (3) are located the top of the lower one side of play flitch (28).

6. The apparatus for pulverizing coal for boiler combustion according to claim 1, wherein the upper end of said upper fixing plate (4) is formed in an upward arc shape.

7. The coal briquette pulverizing apparatus for boiler combustion as set forth in claim 3, wherein upper sliding chute baffles (23) are fixed to both ends of said pulverizing surface (18), and the upper sliding chute baffles (23) are attached to the inner wall of the apparatus casing (1) and seal the upper sliding chute above the pulverizing surface (18); one side that ejection of compact board (28) are lower is fixed with down sliding tray baffle (29), and sliding tray baffle (29) and the laminating of the inner wall of device shell (1) down to the sliding tray that will be located ejection of compact board (28) top is sealed down.