CN111298871B - Jaw type crushing mill for crushing raw coal of power plant boiler - Google Patents
Jaw type crushing mill for crushing raw coal of power plant boiler Download PDFInfo
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- CN111298871B CN111298871B CN202010162269.5A CN202010162269A CN111298871B CN 111298871 B CN111298871 B CN 111298871B CN 202010162269 A CN202010162269 A CN 202010162269A CN 111298871 B CN111298871 B CN 111298871B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C1/00—Crushing or disintegrating by reciprocating members
- B02C1/02—Jaw crushers or pulverisers
- B02C1/04—Jaw crushers or pulverisers with single-acting jaws
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Abstract
A jaw crusher for crushing the raw coal of boiler in electric power plant is composed of a crusher body with a hollow cylindrical cavityThe device comprises a case, a movable jaw mechanism and a static jaw structure, wherein the case is formed by arranging a left case and a right case which are corresponding to the two sides of a belt pulley through an eccentric shaft; the movable jaw mechanism is installed by an eccentric wheel and a fixed shaft, a movable jaw body is connected to the eccentric wheel and a ribbed plate, the other end of the ribbed plate is supported on an adjusting seat, the movable jaw body, the ribbed plate and the adjusting seat are fastened together by a spring pull rod, and an eccentric shaft is driven by a belt pulley; the static jaw structure is a jaw crushing cavity formed by obliquely and downwards mounting the working surface of a fixed jaw plate, the movable jaw plate is driven by an eccentric shaft to perform crushing and grinding discharge motion with mutually vertical strokes, raw material coal is crushed and ground into fine coal for the circulating fluidized bed boiler through the adjusting ribbed plate, the gas-solid two-phase flow in the boiler is further changed, and NO generated by boiler combustion is reducedXAnd SO2。
Description
Technical Field
The invention relates to a pulverizer for coal raw materials of a power plant, in particular to a jaw crusher for coal raw materials of the power plant.
Background
The circulating fluidized bed boiler of the power plant adopts a crusher to crush raw coal into wide-screen coal as fired with the particle size of 0-10mm, researches show that the particle size of the coal as fired has great influence on the generation of combustion pollutants of the boiler, and when the particle size of the coal as fired is reduced to 0-1mm, the circulating fluidized bed boiler burns SO generated by the combustion of certain coal2And NOXThe method can meet the requirement of ultralow emission, namely the boiler can realize original ultralow emission, but the conventional coal crushing equipment cannot crush the raw coal to the granularity of less than 1mm, and the coal mill used by the pulverized coal boiler grinds the raw coal to micron-sized pulverized coal, so that the circulating fluidized bed boiler cannot form a circulating combustion mode due to the fact that the pulverized coal is too fine.
The jaw crusher has a crushing cavity comprising two jaw plates, one movable jaw and one fixed jaw, simulates the motion of two jaws of animal to crush material, and is used widely in mine smelting, building material, highway, railway, chemical industry and other industry to crush various ore and large material with maximum compression strength of 320 MPa.
The existing compound pendulum jaw crusher, such as [ Sun Yongning, Kudzuvine, Guanshipping Key ] modern crushing theory and the development of domestic crushing equipment [ J ]. Jiangsu metallurgy, 2007,35(5):5-8 ], has a round or oval motion track of each point on the movable jaw plate, and in the motion process, crushing of materials is extrusion shearing, the extrusion process is instantaneous motion, and has no simple extrusion process and continuous load, the crushing efficiency is higher due to smaller continuous load, and the motion track of each point on the movable jaw plate of the compound pendulum jaw crusher is very complicated due to the oval stroke and the supporting position of a rib plate on the movable jaw body, and is not easy to research and improve.
The current broken chamber of jaw crusher that moves outward is the slope, but it moves the jaw and is located the below, and the material is on moving the jaw, can drive broken thing and move together when moving the jaw motion, causes electric power waste, and only one broken chamber, and the acting is discontinuous, and the acting time is not enough to can't be with the material breakage below 1 mm.
The prior publication No. 103801425A discloses a fine crushing jaw crusher, which comprises a motor, a crusher body, a belt pulley, a movable jaw, an eccentric shaft, a flywheel, a fixed jaw plate, a movable jaw plate, a ribbed plate, an adjusting seat and an adjusting shim group, wherein the fixed jaw plate is arranged on the crusher body, the movable jaw plate is arranged on the movable jaw plate, the strokes of the fixed jaw plate and the movable jaw plate form a wedge-shaped crushing cavity, and the lower part of the crushing cavity is provided with a discharge port; the movable jaw is supported on the adjusting seat through a ribbed plate, and the adjusting seat is arranged on the machine body; the eccentric shaft is arranged in the shaft hole of the movable jaw, one end of the eccentric shaft is provided with a belt pulley connected with the machine body, and the other end of the eccentric shaft is provided with a flywheel; the invention reduces the volume of the crushing cavity, reduces the manufacturing cost, greatly improves the crushing efficiency, reduces the grinding of the jaw plate, but the discharge granularity of the jaw plate still can not meet the requirement of the particle size less than 1mm, and can not meet the requirement of the granularity of the coal feeding with ultralow emission of the fluidized bed.
Disclosure of Invention
The invention aims to provide a jaw type crushing mill for crushing raw coal of a power plant boiler, which is used for crushing the raw coal to 0-1mm so as to change the gas-solid two-phase flow in a boiler and reduce NO generated by boiler combustionXAnd SO2The method reduces the pollutant discharge and further meets the requirement of ultralow-discharge coal feeding granularity of the fluidized bed boiler of the power plant.
The invention adopts the following technical scheme.
A jaw type crushing and grinding machine for crushing raw material coal of a power plant boiler comprises a case, a movable jaw mechanism and a static jaw structure，The method is characterized in that:
the case is formed by connecting a left case and a right case which are corresponding to the two sides of the belt pulley through two eccentric shafts and shaft supports thereof which are coaxially and horizontally arranged; one ends of the two eccentric shafts are respectively arranged on the left case and the right case, the other ends of the two eccentric shafts are arranged on the shaft bracket, and the phase difference between the two eccentric shafts is 180 degrees;
a square shaft hole with four rounded corners is formed in a movable jaw body of the movable jaw mechanism, one end of the movable jaw body is hung on an eccentric shaft penetrating through the shaft hole, and the other end of the movable jaw body is supported by a rib plate and a rib plate pad; the other end of the ribbed plate is supported on the adjusting seat; the movable jaw body, the ribbed plate and the adjusting seat are fastened together by a spring pull rod. The movable jaw plate is arranged on the movable jaw body;
the distances from each point on a first arc surface bc of the eccentric shaft to the axis are the same, the distance from each point on a second arc surface ab to the axis is gradually increased from a to b, the distances from each point on a third arc surface ad to the axis are the same, the distance from each point on a fourth arc surface to the axis is gradually increased from d to c, and the movable jaw body is driven by the eccentric shaft to do rectangular motion;
the fixed jaw plate of the static jaw structure is fixed on the fixed jaw frame, the fixed jaw frame and the working surface of the fixed jaw plate are obliquely and downwards installed and form an oblique downward jaw type crushing cavity with the movable jaw plate, the movable jaw plate is driven by the eccentric shaft and supported by the rib plate to perform crushing and grinding discharge motion with mutually vertical strokes, and the raw material coal is crushed and ground into 0-1mm of pulverized coal to be supplied to the circulating fluidized bed boiler through the adjusting rib plate.
Further additional technical characteristic scheme is as follows:
the utility model provides a jaw formula pulverizer for power plant's boiler raw materials coal is kibbling which characterized in that: the included angle between the working surface of the fixed jaw plate and the horizontal plane is an acute angle of 30-60 degrees.
The utility model provides a jaw formula pulverizer for power plant's boiler raw materials coal is kibbling which characterized in that: the movable jaw plate is positioned above the fixed jaw plate in an inclined mode, and forms an included angle of 8-22 degrees with the fixed jaw plate.
The utility model provides a jaw formula pulverizer for power plant's boiler raw materials coal is kibbling which characterized in that: the supporting point of the rib plate is located at the lower end of the movable jaw body, and the installation angle of the rib plate and the movable jaw body is 90 degrees.
Compared with the existing jaw crusher, the technical scheme of the jaw crusher for crushing the raw material coal of the power plant boiler provided by the invention has the following beneficial effects.
(1) The invention changes the assembly position of the eccentric shaft and the movable jaw body, changes the original circular motion into square motion, changes the motion track of the movable jaw plate from the source, so that the movable jaw plate 7 has a pure extrusion crushing stroke, the extrusion stroke is that when a trapezoidal material layer is extruded, the crushing cavity of the jaw crusher is trapezoidal and is close to parallel extrusion, extrusion can be kept at the end point of the extrusion stroke, then a stroke vertical to the extrusion stroke is carried out, the stroke has two functions of grinding and discharging, in the stroke of grinding and discharging, the movable jaw plate can keep the extrusion of the material, and has a continuous extrusion load, and according to the crushing theory, the continuous load has higher probability to crush the material.
(2) Compared with an external movable jaw crusher, the movable jaw crusher has the advantages that the movable jaw plate is arranged above, and useless work is reduced.
(3) The two crushing cavities are arranged on the two sides of the belt pulley in parallel, the belt pulley is guaranteed to rotate for a circle, the left crushing cavity and the right crushing cavity do work respectively, two working strokes are provided, the continuous working is guaranteed, the working efficiency is improved, the discharging granularity can be controlled by adjusting the angle of the crushing cavities, the movement of each point on the movable jaw plate has a certain rule, the device can be explored through simulation and calculation, and the device is further improved.
The invention has the effects of providing 0-1mm of pulverized coal for the circulating fluidized bed boiler, changing the gas-solid two-phase flow in the boiler and reducing NO generated by the boiler combustionXAnd SO2。
Drawings
FIG. 1 is a schematic view of the construction of the jaw crusher of the present invention.
Fig. 2 is a schematic structural view of the movable jaw body of the invention.
Fig. 3 is a schematic cross-sectional structure of the eccentric shaft of the present invention.
Fig. 4 is a schematic structural diagram of the eccentric shaft and the movable jaw body of the invention.
Fig. 5 is a schematic diagram of the motion track structure of the movable jaw body of the eccentric shaft of the invention when the eccentric shaft rotates for one circle.
FIG. 6 is a schematic view of the assembly structure of the movable jaw body, rib plate pad and rib plate.
FIG. 7 is a schematic view of the overall structure of the grinding mechanism and the pulley of the present invention.
FIG. 8 is a schematic view of the overall appearance of the grinding mechanism and pulley of the present invention.
FIG. 9 is a schematic view of the structural arrangement of A-A, B-B in FIG. 8 of the grinding mill of the present invention.
FIG. 10 is a schematic view of the relative installation positions of the eccentric shafts C-C and D-D in the right and left grinding mechanisms of FIG. 8 according to the present invention.
FIG. 11 is a schematic view of the overall appearance of the left and right eccentric shafts of the present invention.
In the figure: 1: an eccentric shaft; 2: a movable jaw body; 3: an adjusting seat; 4: a spring pull rod; 5: a rib plate; 6: a rib plate pad; 7: a movable jaw plate; 8: a jaw fixing plate; 9: a jaw fixing frame; 10: a left chassis; 11: a shaft support; 12: a belt pulley; 13: a right chassis; 14: a first arc surface; 15: a second arc surface.
Detailed Description
The following further describes embodiments of the present invention with reference to the drawings.
Detailed description of the preferred embodiment 1
The technical scheme of the jaw crusher for crushing the raw material coal of the power plant boiler comprises a case, a movable jaw mechanism and a static jaw structure.
The machine case is formed by coaxially and horizontally connecting a left machine case 10 and a right machine case 13 which are corresponding to the two sides of a belt pulley 12 through an eccentric shaft 1 and a shaft bracket 11 thereof; one end of the eccentric shaft 1 is arranged on the left case 10 and the right case 13, and the other end is arranged on the shaft bracket 11; the installation phase difference of the eccentric shaft 1 is 180 degrees.
The movable jaw mechanism is characterized in that an eccentric shaft 1 is arranged in a fixed shaft mode, one end of a movable jaw body 2 is hung on the eccentric shaft 1, and the other end of the movable jaw body is supported by a ribbed plate 5 and a ribbed plate pad 6; the other end of the ribbed plate 5 is supported on the adjusting seat 3; the movable jaw body 2, the ribbed plate 5 and the adjusting seat 3 are fastened together by a spring pull rod 4, the movable jaw plate 7 is arranged on the movable jaw body 2, the fixed jaw plate 8 is fixed on the fixed jaw frame 9, and the eccentric shaft 1 is powered by a belt pulley 12.
The static jaw structure is characterized in that a working surface of a fixed jaw frame 9 and a fixed jaw plate 8 of the fixed jaw frame are obliquely and downwards arranged and correspond to a movable jaw plate 7 of the movable jaw mechanism to form an oblique downward jaw type crushing cavity, the movable jaw plate 7 is driven by an eccentric shaft 1 and supported by a ribbed plate 5 to perform crushing and grinding discharge movement with mutually vertical strokes, and raw material coal is crushed and ground into 0-1mm of pulverized coal to be supplied to the circulating fluidized bed boiler through adjusting the ribbed plate 5.
The included angle between the working surface of the fixed jaw plate 8 and the horizontal plane is an acute angle of 30-60 degrees.
The movable jaw plate 7 is positioned above the fixed jaw plate 8 in an inclined way, and forms an included angle of 8-22 degrees with the fixed jaw plate 8, and the included angle of the two is kept unchanged.
The supporting point of the ribbed plate 5 is positioned at the lower end head of the movable jaw body 2, and the installation angle of the ribbed plate 5 and the movable jaw body 2 is 90 degrees.
In the above-mentioned embodiment, the material is crushed and ground in the crushing chamber, the inclined crushing chamber is composed of a movable jaw plate 7 located at the upper part and a fixed jaw plate 8 located below the movable jaw plate 7, the movable jaw plate 7 is installed on the movable jaw body 2, one end of the movable jaw body 2 is hung on the eccentric shaft 1, the other end is supported by the rib plate 5 and the rib plate pad 6, the other end of the rib plate 5 is supported on the adjusting seat 3, the movable jaw body 2, the rib plate 5 and the adjusting seat 3 are fastened together by the spring pull rod 4, and the fixed jaw plate 8 is fixed on the fixed jaw frame 9.
As an innovation of the invention, the movable jaw body 2 and the eccentric shaft 1 are two important parts which are mutually matched in a kinematic chain, the movable jaw body 2 adopts a square shaft hole with four corners being round corners, the sizes of four surfaces in the hole are equal, the eccentric shaft 1 is matched with the hole, and the distances from all points on a first arc surface 14 (bc) of the eccentric shaft to the shaft center are equal, so that the distance from the shaft hole surface contacted with the first arc surface 14 to the shaft center is not changed when the eccentric shaft 1 rotates; the distance between each point on the second arc surface 15 (ab) of the eccentric shaft 1 and the axis is continuously increased, so that when the eccentric shaft 1 rotates, the second arc surface 15 can push the shaft hole surface in contact with the second arc surface to move, and the comprehensive effect of the first arc surface 14 and the second arc surface 15 is that the eccentric shaft drives the movable jaw body 2 to do rectangular motion.
The movable jaw body 2 adopts a new ribbed plate 5 supporting position, the ribbed plate 5 supporting position is arranged at the lowest end of the ribbed plate 5, and preferably, when the novel movable jaw body 2 is assembled with the ribbed plate 5, the ribbed plate 5 and the movable jaw body 2 are installed at an angle of 90 degrees.
The invention controls the crushing time of the material in the crushing cavity by controlling the angle between the crushing cavity and the ground, so as to control the discharging granularity, the upper end surface of the fixed jaw frame 9 and the ground form an acute angle of 30-60 degrees, the specific angle is determined according to the discharging granularity, when the crushing device is installed, the fixed jaw plate 8 is fixed on the fixed jaw frame 9, so that the installation angle of the fixed jaw plate 8 and the ground form an acute angle, the angle is 30-60 degrees, the crushing cavity and the ground form an acute angle of 30-60 degrees, the feeding hole is arranged at the upper left of the crushing cavity, and the discharging hole is arranged below the crushing cavity.
The invention has set up two crushing cavities, install in parallel on both sides of the belt pulley separately, as the optimization, one end of the eccentric shaft 1 is installed on chassis, another end, namely close to the belt pulley 12, have set up the shaft bracket 11; the eccentric shafts 1 of the left and right cases are arranged at two sides of a belt pulley 12, the same belt pulley 12 provides power, the axes of the two eccentric shafts 1 are positioned on the same straight line, but the installation phase difference of the two shafts is 180 degrees.
Detailed description of the preferred embodiment 2
The embodiments of the present invention will now be described with reference to the accompanying drawings, which are simplified schematic drawings illustrating only the basic structure of the invention and thus showing only the constitution related to the invention.
As shown in figure 1, a jaw crusher for crushing raw material coal of a power plant boiler, a fixed jaw plate 8 is arranged on a fixed jaw frame 9 and forms an acute angle of 30-60 degrees with the ground, a movable jaw plate 7 is arranged on a movable jaw body 2, an eccentric shaft 1 is suspended above the fixed jaw plate 8 in an inclined manner, the lower part of the movable jaw body 2 is supported on an adjusting seat 3 through a ribbed plate 5 and a ribbed plate pad 6 and is fastened by a spring pull rod 4, the adjusting seat 3 is arranged on the rear wall of a case, the fixed jaw plate 8 and the movable jaw plate 7 form a crushing cavity and form an acute angle with the ground so as to ensure the staying time of coal in the crushing cavity, and materials in the crushing cavity are ground and extruded due to the movement of the movable jaw plate 7 to achieve the purpose of crushing.
As shown in the attached figure 2, the shaft hole of the movable jaw body 2 is a square with four rounded corners for installing the eccentric shaft 1, and the rib plate pad 6 and the rib plate 5 are installed in the groove at the rightmost end of the movable jaw body 2.
As shown in fig. 3, the eccentric shaft 1 rotates around the axis; the first arc surface 14 (bc) is concentric with the circle, and the distances from all points on the first arc surface to the axis are the same; the distance from each point on the second arc surface 15 (ab) to the axle center is gradually increased from a to b, as shown in the attached drawings 4 and 5, the eccentric shaft 1 is installed in the axle hole of the movable jaw body 2, the first arc surface 14 (bc) and the second arc surface 15 (ab) respectively contact two surfaces of the axle hole which are vertical to each other, the movement process is as shown in the attached drawing 6, when the eccentric shaft 1 rotates anticlockwise from the initial position (i), the second arc surface 15 rotates along with the left wall of the axle hole to push the axle hole to move leftwards, and at the moment, because the first arc surface 14 rotates along with the upper wall surface of the axle hole, the distance from the upper wall surface of the axle hole to the rotation center, namely the distance from the axle center is not changed due to the characteristics of the first arc surface 14, the height of the axle hole in the vertical direction is not changed, namely, when the axle hole moves leftwards, the axle hole only moves leftwards to the position, the eccentric shaft 1 continues to rotate from the position II, the shaft wall of the second arc surface 15 rotates close to the lower wall surface of the shaft hole to push the shaft hole to move downwards, at the moment, the first arc surface 14 rotates close to the left wall surface of the shaft hole to enable the position of the shaft hole in the horizontal direction to be unchanged, the shaft hole only moves downwards to move to the position III, and by analogy, the eccentric shaft rotates for a circle, the shaft hole respectively moves leftwards, downwards, upwards and rightwards, and the track of the shaft hole is square.
As shown in figure 7, the lower end of the movable jaw body 2 is supported on a ribbed plate 5, the ribbed plate 5 and the movable jaw body 2 are installed at an angle of 90 degrees, the rightmost end of the movable jaw body 2 makes approximate linear motion around the ribbed plate 5, the approximate linear motion is vertical to the ribbed plate 5, and the length of the straight line is equal to the length of the side of the shaft hole.
With the combination of the attached drawings 5 and 7, the movable jaw plate 7 is driven by the movable jaw body 2 to gradually reduce the downward stroke in the motion track from the shaft hole end to each point of the ribbed slab 5 end, so that the square gradually changes into a rectangle, the crushing stroke is gradually reduced until the square is almost similar to a straight line, the stroke of grinding and discharging is kept unchanged, the crushing mainly occurs in the front middle part of a crushing cavity, the grinding occurs in the middle rear part, and the whole working stroke of the movable jaw is divided into firstly extruding, crushing and then grinding.
As shown in figure 7, the invention comprises two crushing mechanisms which are respectively positioned at the left side and the right side of a belt pulley 12, eccentric shafts 1 of the left crushing mechanism and the right crushing mechanism are respectively arranged at the two sides of the belt pulley 12, the belt pulley 12 drives the eccentric shafts 1 to rotate, and the belt pulley 1 and the eccentric shafts 1 are supported by two machine box walls and a shaft bracket 11.
Referring to FIG. 8, FIG. 9 is a view of the inside assembly of the left and right housings of the whole pulverizer, showing A-A and B-B in FIG. 8; in the attached figure 9, the left and right chassis are respectively installed on the left and right sides of the belt pulley, the internal structural parts and the installation positions are basically the same, the axes of the two eccentric shafts are on the same straight line, the same belt pulley provides power, and the installation angles of the two eccentric shafts are different by 180 degrees.
The installation mode of the two eccentric shafts is shown in the attached drawing 10, the left and right drawings correspond to C-C, D-D in the attached drawing 8 respectively, the two eccentric shafts are assembled with the movable jaw bodies respectively, but the installation angles of the two eccentric shafts are different by 180 degrees, when the left eccentric shaft rotates downwards, the right eccentric shaft rotates upwards, similarly, when the movable jaw at one side moves upwards, the movable jaw at the other side is in a state of squeezing and acting, the left and right crushing and grinding mechanisms alternately act, the belt pulley rotates for one circle, and the whole mechanism has two crushing and grinding strokes.
FIG. 11 is an overall appearance schematic diagram of two eccentric shafts of a left crushing mill and a right crushing mill, the phases of the eccentric shafts are 180 degrees apart, the eccentric shafts rotate simultaneously under the driving of a belt pulley, a single mechanism only has half of the stroke to do work under the condition that the belt pulley rotates for one circle, and the efficiency is low.
In conclusion, after the material enters the crushing cavity, the material is firstly extruded in parallel by the movable jaw plate, then the extrusion load is kept at the terminal of the extrusion stroke of the jaw plate, the grinding and discharging stroke is carried out, the pulverized coal at the lowest end of the crushing cavity can leave the crushing cavity under the pushing of the gravity and the movable jaw plate 7, and the crushing of the pulverized coal into 0-1mm is completed.
Claims (4)
1. A jaw type crushing and grinding machine for crushing raw material coal of a power plant boiler comprises a case, a movable jaw mechanism and a static jaw structure，The method is characterized in that:
the case is formed by connecting a left case (10) and a right case (13) which are corresponding to the two sides of a belt pulley (12) through two eccentric shafts (1) which are coaxially and horizontally arranged and shaft supports (11) thereof; one ends of the two eccentric shafts (1) are respectively arranged on the left case (10) and the right case (13), the other ends of the two eccentric shafts (1) are arranged on the shaft bracket (11), and the installation phase difference of the two eccentric shafts (1) is 180 degrees;
a movable jaw body (2) of the movable jaw mechanism is provided with a square shaft hole with four rounded corners, one end of the movable jaw body (2) is suspended on an eccentric shaft (1) penetrating through the shaft hole, and the other end of the movable jaw body is supported by a ribbed plate (5) and a ribbed plate pad (6); the other end of the ribbed plate (5) is supported on the adjusting seat (3); the movable jaw body (2), the ribbed plate (5) and the adjusting seat (3) are fastened together by a spring pull rod (4), and the movable jaw plate (7) is arranged on the movable jaw body (2);
the distances from each point on a first arc surface bc of the eccentric shaft (1) to the axis are the same, the distances from each point on a second arc surface ab to the axis are gradually increased from a to b, the distances from each point on a third arc surface ad to the axis are the same, the distances from each point on a fourth arc surface dc to the axis are gradually increased from d to c, and the eccentric shaft (1) drives the movable jaw body (2) to do rectangular motion;
the fixed jaw plate (8) of the static jaw structure is fixed on the fixed jaw frame (9), the fixed jaw frame (9) and the working surface of the fixed jaw plate (8) are obliquely and downwards installed and form an oblique downward jaw type crushing cavity with the movable jaw plate (7), the movable jaw plate (7) is driven by the eccentric shaft (1) and supported by the rib plate (5) to perform crushing and grinding discharging movement with mutually vertical strokes, and raw material coal is crushed and ground into 0-1mm pulverized coal to be supplied to the circulating fluidized bed boiler through the adjusting rib plate (5).
2. The jaw crusher for crushing coal used as a raw material of a power plant boiler of claim 1, wherein: the included angle between the working surface of the fixed jaw plate (8) and the horizontal plane is an acute angle of 30-60 degrees.
3. The jaw crusher for crushing coal used as a raw material of a power plant boiler of claim 1, wherein: the movable jaw plate (7) is positioned above the fixed jaw plate (8) in an inclined mode, and forms an included angle of 18-22 degrees with the fixed jaw plate (8).
4. The jaw crusher for crushing coal used as a raw material of a power plant boiler of claim 1, wherein: the supporting point of the ribbed plate (5) is positioned at the lower end of the movable jaw body (2), and the installation angle of the ribbed plate (5) and the movable jaw body (2) is 90 degrees.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010162269.5A CN111298871B (en) | 2020-03-10 | 2020-03-10 | Jaw type crushing mill for crushing raw coal of power plant boiler |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010162269.5A CN111298871B (en) | 2020-03-10 | 2020-03-10 | Jaw type crushing mill for crushing raw coal of power plant boiler |
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| CN111298871A CN111298871A (en) | 2020-06-19 |
| CN111298871B true CN111298871B (en) | 2021-07-23 |
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|---|---|---|---|---|
| CN2053108U (en) * | 1989-01-31 | 1990-02-21 | 陈印庭 | Bumping-type pulveriser for leavened grains |
| DE4442394A1 (en) * | 1994-11-29 | 1996-06-05 | Planex Projektierungs Gmbh | Crusher compactor for thermoplastics tolerant of hard foreign objects |
| CN201483822U (en) * | 2009-06-17 | 2010-05-26 | 无锡市铁民印刷机械有限公司 | Transmission mechanism |
| CN105413790A (en) * | 2015-12-30 | 2016-03-23 | 高阳 | Novel adjustable mobile-jaw stroke ore-crushing force jaw crusher with multiple fixed jaws and mobile jaws and four crushing cavities |
| CN206199377U (en) * | 2016-11-01 | 2017-05-31 | 新余市南方硅灰石有限公司 | A kind of grinder for needle tabular spar |
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2020
- 2020-03-10 CN CN202010162269.5A patent/CN111298871B/en active Active
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2053108U (en) * | 1989-01-31 | 1990-02-21 | 陈印庭 | Bumping-type pulveriser for leavened grains |
| DE4442394A1 (en) * | 1994-11-29 | 1996-06-05 | Planex Projektierungs Gmbh | Crusher compactor for thermoplastics tolerant of hard foreign objects |
| CN201483822U (en) * | 2009-06-17 | 2010-05-26 | 无锡市铁民印刷机械有限公司 | Transmission mechanism |
| CN105413790A (en) * | 2015-12-30 | 2016-03-23 | 高阳 | Novel adjustable mobile-jaw stroke ore-crushing force jaw crusher with multiple fixed jaws and mobile jaws and four crushing cavities |
| CN206199377U (en) * | 2016-11-01 | 2017-05-31 | 新余市南方硅灰石有限公司 | A kind of grinder for needle tabular spar |
Non-Patent Citations (1)
| Title |
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| 复摆颚式破碎机三维模型图设计;刘兵吉;《江西冶金》;20021231;第36-38 * |
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