CN109012979B - Vertical shaft type impact crusher for removing powder and dust and method for removing powder and dust - Google Patents
Vertical shaft type impact crusher for removing powder and dust and method for removing powder and dust Download PDFInfo
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- CN109012979B CN109012979B CN201811059959.7A CN201811059959A CN109012979B CN 109012979 B CN109012979 B CN 109012979B CN 201811059959 A CN201811059959 A CN 201811059959A CN 109012979 B CN109012979 B CN 109012979B
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- dust
- air suction
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- air
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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
- B02C19/00—Other disintegrating devices or methods
- B02C19/0012—Devices for disintegrating materials by collision of these materials against a breaking surface or breaking body and/or by friction between the material particles (also for grain)
- B02C19/0018—Devices for disintegrating materials by collision of these materials against a breaking surface or breaking body and/or by friction between the material particles (also for grain) using a rotor accelerating the materials centrifugally against a circumferential breaking surface
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B15/00—Preventing escape of dirt or fumes from the area where they are produced; Collecting or removing dirt or fumes from that area
- B08B15/04—Preventing escape of dirt or fumes from the area where they are produced; Collecting or removing dirt or fumes from that area from a small area, e.g. a tool
Abstract
The invention relates to a vertical shaft type impact crusher for removing dust and dust, which is characterized in that an upper air suction pipe is arranged and is directly communicated with a positive pressure air space at the periphery of a rotor, the upper air suction pipe is not directly communicated with other air normal pressure and negative pressure spaces, the upper air suction pipe and the other air normal pressure and negative pressure spaces form indirect communication relation only through a rotor channel, the upper air suction pipe is communicated with an exhaust pipeline of a dust removing and removing system, and an exhaust fan of the dust removing and removing system sucks positive pressure dust air at the periphery of the rotor through the exhaust pipeline and the upper air suction pipe. The invention avoids the mutual interference of air flow, avoids the repeated crushing of dust in the machine, reduces the yield of dust, forms negative pressure at the inlet and outlet of the machine, and has no dust air overflow.
Description
Technical Field
The invention relates to a vertical shaft type impact crusher, in particular to a powder and dust removing vertical shaft type impact crusher and a powder and dust removing method.
Background
The vertical shaft type impact crusher is a crusher which uses a working principle completely different from that of the traditional crusher, an impact type rotor rotates at a high speed of about 1500 rpm, the linear speed of the edge of the rotor reaches a speed of more than 60m/s, the material is fed from the center, and the purpose of crushing the crushable materials is achieved by accelerating the crushable materials to a speed of more than 60m/s and striking the iron wall lining or the stone wall lining, and particularly, the crushing effect on the medium and small crushable materials is better. The vertical shaft type impact crusher using the double-rotor combination is also provided with an upper rotor and a lower rotor, wherein the upper rotor is an impact rotor, and the lower rotor is a hammer rotor. And hammering the stones falling from the periphery of the upper rotor to further crush the materials.
The vertical shaft type impact crusher comprises a frame, a motor frame, an upper feed hopper, a rotor, a middle machine body, a middle cavity, a main shaft assembly, a belt pulley assembly, a lower machine body and the like. The frame is used for bearing the weight of the whole machine and is firmly arranged on the ground or in some structural buildings; the frame and the main machine are usually connected through vibration isolators which can play a role in vibration isolation. The motor is arranged on the motor frame, and transmits power to the main shaft through a motor belt pulley, a belt and a main shaft belt pulley, and the main shaft rotates at a high speed to drive the impact type rotor arranged on the upper part of the main shaft to rotate at a high speed. The main machine lower body is used for bearing the main shaft assembly, supporting the middle part, bearing the crushable materials and the like. The middle part of the host machine is used for supporting the upper part of the host machine, and a middle cavity is arranged. The middle cavity is used for receiving the crushable materials thrown out by the rotor and generating crushing action. The upper part of the main machine is provided with an upper feed hopper, the upper feed hopper is provided with a simple hopper and an overflow hopper, the simple hopper is used for receiving the belt-conveyed crushable materials or the crushable materials conveyed in other modes, the simple hopper is only used for receiving the crushable materials, the crushable materials are conveyed to the central part of the impact rotor rotating at high speed through a feeding pipe in the center of the bottom of the hopper, the center of the bottom of the overflow hopper is provided with an adjusting plate capable of adjusting the opening degree, the periphery of the overflow hopper is provided with an overflow window, when the size of a central hole in the bottom of the overflow hopper is reduced, the fed materials are accumulated in the hopper, and after reaching a certain height, the excessive parts fall into a striking area around the rotor from the peripheral overflow opening. The crushable materials entering the center of the rotor are thrown out from the throwing port at high speed through the throwing channel after the rotor drives the crushable materials to rotate.
The rotor of the vertical shaft type impact crusher rotates at a high speed, the impact rotor sucks air from the central hole and ejects the air from the material ejection channel of the rotor. Negative pressure is formed at the feed inlet above the center of the rotor, positive pressure is formed at the peripheral region of the rotor, air is sucked in by the negative pressure, and air is sprayed to the periphery by the positive pressure. When the water content of the crushed materials is lower, a large amount of dust air is generated in the positive pressure area, and in order to prevent the dust air from overflowing out of the machine body, a multiple air internal circulation structure is arranged in the crusher, so that the dust air can circulate in the crusher and rarely overflows out of the machine body.
However, on the requirement of the crushed material finished product, some of the requirements are on the content of the fine powder, the content of the fine powder cannot be higher than a certain percentage, some of the materials are low in compressive strength and easy to crush, fine powder is easy to generate, if the fine powder or the fine particle material generated by crushing circulates between a rotor feed inlet and a projection channel along with internal circulating air, the fine powder or the fine particle material is subjected to repeated impact crushing to generate more fine powder, energy is wasted, qualified finished products are reduced, a large amount of waste is generated, the powder removing difficulty of the rear-stage process is increased, a large amount of dust overflows from the fine powder in the rear-stage conveying process, and the dust removing difficulty is increased. Higher efficiency in powder removal is required.
The requirements for crushing the finished product of the material are that a certain proportion of fine powder is required to be reserved, for example, 10% of fine powder with the unit yield smaller than 0.15mm is required to be reserved, more than 0.15 particle is required to be reserved as much as possible, the powder removal and dust removal system is required to uniformly extract dust as much as possible, and proper fine powder can be extracted by adjusting the air quantity, the wind pressure and the wind speed and the like, so that the required product is reserved.
In CN 202715459U there is provided a structure for removing dust from the inside of a vertical shaft impact crusher by air intake below the crushing chamber, air suction above, air flow rising from below, and dust air suction. The effect of removing internal dust is achieved.
However, the flow direction from bottom to top is interfered with the rotor projection flow direction and the flow direction falling along with the materials, so that the powder removing and dust removing effects are affected, the air suction inlet is communicated with the feeding inlet, the negative pressure of the air suction inlet can suck the air of the feeding inlet, the dust collecting effect is reduced, and the powder removing and dust removing efficiency is reduced.
In CN201721123848.9, another vertical shaft impact crusher with automatic dust removal is provided, a dust hood is connected to an exhaust pipe of a dust removal system, and dust air generated in a crushing cavity is extracted through the dust hood.
However, this structure is mainly suitable for the feeding mode of only center blanking, and corresponds to the simple hopper described above. As for the overflow feeding mode of the main flow, it is not described in CN201721123848.9, but it is known from analysis that, because the material in the overflow window needs to fall into the peripheral space of the rotor, the overflow window is directly communicated with the dust hood, so that the external air in the overflow window can be extracted by the exhaust pipeline communicated with the dust hood, and the efficiency of extracting dust air is reduced. Meanwhile, no matter the upper feeding is a simple bucket or an overflow bucket, the connection mode of the dust hood and the dust removal pipe is offset. This offset extraction results in: the position close to the air pipe has high air pressure, large air quantity, high air speed, large amount of sucked dust and coarse particles; the position far away from the air pipe has low air pressure, small air quantity and low air speed, and the sucked dust quantity is small and the particles are fine. The dust air is not uniformly extracted, and the dust granularity is not adjusted.
Thus, new ways to overcome the above drawbacks are needed.
Disclosure of Invention
In order to solve the problems, the invention provides a vertical shaft type impact crusher for removing powder and dust, which solves the problem that fine powder dust is circulated in the crusher to generate more dust, the negative pressure in the crusher avoids the overflow of the dust, reduces the dust conveying to enter a later process, reduces the powder removing difficulty of the later process and reduces the dust overflow in the conveying process.
The technical scheme adopted for solving the technical problems is as follows: the vertical shaft type impact crusher for removing dust is provided with an upper air suction pipe which is directly communicated with a positive pressure air space at the periphery of a rotor, the upper air suction pipe is not directly communicated with other air normal pressure and negative pressure spaces, the upper air suction pipe and the other air normal pressure and negative pressure spaces form indirect communication relation only through a rotor channel, the upper air suction pipe is communicated with an exhaust pipeline of a dust removing and removing system, and the exhaust fan of the dust removing and removing system sucks positive pressure dust air at the periphery of the rotor through the exhaust pipeline and the upper air suction pipe.
The upper feed hopper of the dust removing and crushing machine is directly communicated with the space at the periphery of the rotor through an upper air suction pipe and is not directly communicated with other air normal pressure and negative pressure spaces. Air is not directly extracted from the central inlet and overflow window of the upper feed hopper. The air in the normal pressure and negative pressure space, namely the air in the upper center feed inlet and the overflow window, can only be thrown to the positive pressure area of the crushing cavity through the rotor and can be pumped away by the air suction pipe, so that the powder and dust removal efficiency is not reduced, and the communication is indirect. The direct communication, i.e. the air can circulate without accelerating and pressurizing by the rotor, and the indirect communication, i.e. the air can circulate only by accelerating and pressurizing by the rotor channel.
The definition of the direct communication relation and the indirect communication relation is the definition of the vertical shaft type impact crusher during operation. In the non-operating state, i.e., in the case where the shutdown rotor is not rotating, no definition is given as to the difference that distinguishes between the direct communication relationship and the indirect communication relationship.
The outside air just passes through the central feeding hole or the overflow window, the dust concentration is not high at the moment, and if the outside air is directly pumped away by the air suction pipe at the moment, the dust removing efficiency is reduced, and the fan power is wasted.
The upper air suction pipes are provided with 3-8 bottom plates which are uniformly communicated with the upper feed hopper. The crushing cavity is an annular area, if an upper air suction pipe is arranged, the extracted flow field is uneven, the suction force of the area close to the upper air suction pipe is large, the dust with coarse particles is sucked away, the suction force of the area far away from the upper air suction pipe is small, and the effect of sucking the dust is poor. Considering the suction range of each upper air suction pipe, it is reasonable to set 3-8. One end of the upper air suction pipe is converged at the upper part and then is communicated with an exhaust pipeline of the powder removal and dust removal system, the wind pressure, the wind speed and the flow of each air suction pipe are basically the same, the effect of extracting dust air is basically the same, and the positive pressure air of the crushing cavity can be more uniformly extracted.
Because the dust air in the crushing cavity is evenly extracted, when the wind pressure and the wind quantity of the exhaust pipe are adjusted, the wind pressure and the wind quantity of each upper air suction pipe are also adjusted in an equivalent way, and the offset effect of sucking the granularity can not be generated.
Further preferably, the vertical shaft type impact crusher further comprises a lower air suction pipe and an air suction loop, wherein the lower air suction pipe is arranged at the lower part of the air suction loop, the upper air suction pipe is arranged at the upper part of the air suction loop, the upper air suction pipe, the air suction loop and the lower air suction pipe form an independent air suction cavity, the lower air suction pipe extends into the upper part of a stone lining cavity in the middle part of the vertical shaft type impact crusher, vertical partition plates are arranged in the annular direction of the stone lining cavity, the stone lining cavity is divided into independent spaces by the vertical partition plates, and the space divided by each vertical partition plate is provided with one lower air suction pipe. The lower air suction pipe directly sucks positive pressure dust air above the stone lining cavity.
Further preferably, the middle air suction stone lining cavity is formed by enclosing an inner baffle plate, an upper sealing ring and an outer ring baffle plate, the upper air suction pipe is arranged on the upper sealing ring, passes through the air suction overflow hopper or the hopper bottom plate of the air suction center inlet hopper, and is connected to the powder removal and dust removal system.
Further preferably, the upper air suction pipe, the overflow inlet hopper and the lower hopper baffle are combined into an air suction type overflow hopper, the upper air suction pipe is an upper hopper air suction pipe, the upper hopper air suction pipe penetrates through the hopper bottom plate of the air suction type overflow hopper, the lower hopper baffle is connected to the lower hopper bottom plate, an annular space is formed by the lower hopper baffle of the air suction type overflow hopper, the hopper bottom plate and the outer wall plate of the middle machine body, and a stone lining cavity is arranged below the annular space.
Further preferably, the upper air suction pipe and the central feeding hopper are combined into an air suction type central hopper, the upper air suction pipe is an upper air suction pipe, the upper air suction pipe penetrates through a hopper bottom plate of the air suction type feeding hopper, a lower hopper baffle is connected below the hopper bottom plate, an annular space is formed by the lower hopper baffle of the air suction type feeding hopper, the hopper bottom plate and an outer wall plate of the middle machine body, and a stone lining cavity is arranged below the annular space. The rock material and air ejected by the rotor create a large amount of positive pressure dust air in this area.
The middle body of the vertical shaft type impact crusher is assembled with an induced draft overflow hopper or an induced draft center feeding hopper.
The upper air suction pipe is communicated with an exhaust pipeline of the dust removing and dedusting system, and a blower of the dust removing and dedusting system sucks dust air at the periphery of the rotor through the exhaust pipeline and the upper air suction pipe at the upper part of the crusher.
Further preferably, the side walls of the discharging channels at two sides of the lower body of the vertical shaft type impact crusher for removing powder and dust are connected with a lower air suction pipe which is connected with an exhaust pipe of the powder and dust removing system.
The invention has been described mainly for a vertical shaft impact crusher of the stone breaker type, but the suction overflow hopper and suction center hopper described above are still applicable to a vertical shaft impact crusher of the stone breaker type.
The invention also provides a powder and dust removing method of the vertical shaft type impact crusher, the vertical shaft type impact crusher sucks air and stone through a feeding hole or an overflow window in the center of an upper feed hopper, the air and stone enter the center of a rotor, the air and stone are accelerated by the rotor and sprayed on a stone lining cavity around the rotor, the material is crushed to generate a large amount of dust, the dust is mixed with the air to form positive pressure dust air, the positive pressure dust air is sucked by an upper suction pipe communicated with the stone lining cavity, and enters an exhaust pipe of a powder and dust removing system communicated with the upper suction pipe to enter the powder and dust removing system for operation.
Further preferably, the crushed material from which a large amount of dust is removed falls into the lower shell of the main machine, and the dust is sucked away by the exhaust pipe of the dust removing and dedusting system communicated with the lower air suction pipe, so that the dust is further reduced.
The powder and dust removing system can use all powder and dust removing systems in the prior art. The dust removing and dedusting system sucks dust air at a target position through a fan and an air suction pipeline, can perform multi-point and remote extraction operation through the arrangement of the pipeline, can regulate the frequency and speed of the fan, and can perform manual, semi-automatic and automatic adjustment in various modes on the suction air quantity, the air pressure and the air speed of each point. The dust in the extracted air can be subjected to sedimentation, concentration, storage and particle size separation.
The invention is also applicable to a double-rotor vertical shaft impact crusher. The upper rotor is an impact type rotor, the lower rotor is a striking type rotor, positive pressure dust air in the peripheral area of the upper rotor is pumped away, and dust air in the lower shell is also pumped away.
The invention changes the trend of the air flow in the vertical shaft crusher, and no dust air internal circulation is needed to avoid overflow.
Because the air suction and supply function of the rotor is utilized, negative pressure is formed above the rotor, air is sucked from the central hole or the overflow window, and no special air blowing device is needed for feeding the air.
The area where air is sucked away is the air positive pressure area of the stone lining cavity, and the air outflow path does not interfere with the rotor jet air path. The power required to extract air is small.
The air positive pressure area of the stone lining cavity is an area where the material and the stone lining are impacted and broken, a large amount of dust is generated, the dust is pumped away from the area, the dust does not enter the central hole of the rotor for repeated circulation, and the dust yield is reduced.
The broken material falls, drives the air to fall, still has partial dust to fall, sets up the exhaust column at the lower part organism and further extracts, and the dust further reduces. The extracted dust air is air which is ejected from the stone lining cavity at positive pressure and falls, and the trend of the air is smooth.
Air negative pressure is formed at the central feed inlet and the overflow window of the equipment, and air negative pressure is also formed at the discharge outlet of the equipment, so that dust air basically does not overflow.
The air flow direction in the whole machine is independent and smooth, and no cross interference exists between the air flow direction and the machine, so that the power consumption and the idle work of extracting the outside air are avoided.
The independent air suction cavity can be arranged in the originally designed model, and only a small amount of modification is needed to be carried out on the stone lining cavity and the upper part: corresponding pipe holes are formed in the upper annular plate of the stone lining cavity and the bucket bottom plate of the upper feeding material. The independent air suction cavity can change the originally designed internal circulation model into a dust removal and dust removal crusher.
The middle induced draft stone lining cavity is integrated with the raw stone lining cavity, and when the powder removal and dust removal functions are not needed, the upper air suction pipe is only required to be closed. Meanwhile, the middle induced draft stone lining cavity can be replaced with the Dan Tie cavity.
The induced draft overflow hopper can be additionally provided with the upper air suction pipe and the lower hopper baffle plate in the original design, and only the upper air suction pipe is sealed when the powder and dust removing function is not needed.
The air suction center feeding hopper can be additionally provided with an upper air suction pipe and a lower hopper baffle plate in the original design, and when the powder and dust removing function is not needed, the upper air suction pipe is only required to be sealed.
Because stone powder and sand fineness modulus generated by impact crushing of different materials to be crushed through the crusher are different, stone powder content requirements of various users on sand finished products are different, stone content requirements of different process routes are different, dust amount required to be extracted is also different, and the required requirements are achieved by adjusting wind pressure and wind quantity of each pipeline of the dust removing and removing system. Also, the upper air suction pipe and the lower air suction pipe can be provided with air quantity and air pressure adjusting devices so as to achieve the required requirements.
The invention has the following benefits: the invention is directly communicated with the positive pressure air space at the periphery of the rotor by arranging the upper air suction pipe, is not directly communicated with other air normal pressure and negative pressure spaces, and is communicated with the exhaust pipe of the dust removing and dedusting system by arranging the lower air suction pipe through the lower machine body. The upper air suction pipe is extended into the machine to extract positive pressure dust air and the lower machine body to extract dust air, so that the purposes of removing dust and dust are achieved with high efficiency. The mutual interference of air flows is avoided, the dust is prevented from being repeatedly crushed in the machine in a circulating way, the yield of the dust is reduced, negative pressure is formed at an inlet and an outlet of the machine, and no dust air overflows.
Drawings
Fig. 1 is a schematic view of a conventional stone lined overflow type vertical shaft impact crusher.
Fig. 2 is a schematic view of a conventional stone lined center feed type vertical shaft impact crusher.
FIG. 3 is a schematic view of an independent suction chamber provided by the present invention.
FIG. 4 is a schematic diagram of the independent suction chamber and middle assembly provided by the present invention.
FIG. 5 is a schematic diagram of the assembly of the independent suction chamber with the middle and suction overflow hopper provided by the present invention.
FIG. 6 is a schematic diagram of the assembly of the independent suction chambers with the middle and suction center hopper provided by the present invention.
Fig. 7 is a schematic view of a central suction stone liner cavity provided by the present invention.
Fig. 8 is a schematic diagram of the middle suction stone lining cavity and the middle assembly provided by the invention.
FIG. 9 is a schematic diagram of the assembly of the intermediate suction stone liner chamber with the intermediate and suction overflow hopper provided by the present invention.
FIG. 10 is a schematic diagram of the assembly of the central suction stone liner chamber with the central and center feed hoppers provided by the present invention.
Fig. 11 is a schematic diagram of an induced draft overflow hopper according to the present invention.
FIG. 12 is a schematic view of the assembly of the present invention with an upper open stone liner cavity.
Fig. 13 is a schematic diagram illustrating assembly of the suction overflow hopper and the middle part according to the present invention.
Fig. 14 is a schematic view of an induced draft type center bucket according to the present invention.
Fig. 15 is a schematic diagram illustrating assembly of an induced draft center bucket and a middle part according to the present invention.
Fig. 16 is a schematic view of an air suction pipe at the lower part of the vertical shaft type impact crusher for powder and dust removal.
Fig. 17 is a schematic diagram of the flow of air in the vertical shaft type impact crusher for dust removal.
Fig. 18 is a schematic diagram showing the connection between an air suction pipe and a dust removal system on a vertical shaft type impact crusher for dust removal.
In the figure, 1. Overflow into a hopper; 2. a middle stone liner cavity; 3. a middle body; 4. an overflow window; 5. a central feed inlet; 6. a distributing hopper; 7. a rotor; 8. feeding a hopper at the center; 9. an independent air suction cavity; 10. an upper air suction pipe; 11. a lower air suction pipe; 12. the air suction overflows into a hopper; 13. the air suction center enters a hopper; 14. a middle induced draft stone liner cavity; 15. an inner ring baffle; 16. an upper sealing ring plate; 17. an outer ring baffle; 18. an induced draft overflow hopper; 19. an air suction pipe is arranged on the bucket; 20. a bucket bottom plate; 21. a bucket lower baffle; 22. a stone lining cavity is opened upwards; 23. an induced draft type center bucket; 24. a lower air suction pipe; 25. a lower body; 26. an exhaust tube of the dust removing and dedusting system; 27. and (5) feeding a pipe.
Detailed Description
For a better explanation of the present invention, the technical solution of the present invention is described below by means of specific embodiments in conjunction with the accompanying drawings.
Fig. 1 is a schematic view of a conventional stone lined overflow type vertical shaft impact crusher. Stone mainly enters the distributing hopper 6 from the central feeding opening 5 of the overflow feeding hopper 1 and then enters the rotor 7, is thrown into the middle stone lining cavity 2 of the middle machine body 3 from the channel of the rotor 7, and is piled up in the middle stone lining cavity 2, and is piled up to the repose angle of the stone to form a stone lining. The subsequent stone will strike this stone lining, protecting the stone lining cavity 2, the stone will be broken by the stone and stone lining strike, and a large amount of sand and stone dust will be produced, the sand falling from the space between the central body 3 and the rotor 7. Part of the stones enter from the overflow window 4 of the overflow inlet hopper 1 and fall between the rotor and the stone lining cavity, are impacted by the stones ejected by the rotor, and fall together with the broken stones. Air enters from the central feed inlet 5 and is thrown out by the rotor, positive air pressure is formed between the stone lining cavity 2 and the rotor, negative air pressure is formed at the feed inlet position of the rotor 7, part of dust air mixed with stone powder reaches the distributing hopper 6 and is sucked into the rotor by the negative air pressure of the feed inlet above the rotor 7, and the throwing and striking are repeated to form more dust; a part of dust air reaches the overflow window 4 upwards, and overflows from the overflow window 4 to the outside of the machine; a portion of the dust air falls with the rock material and is discharged from the lower part of the machine.
Fig. 2 is a schematic view of a conventional stone lined center feed type vertical shaft impact crusher. Stone enters the rotor 7 from the central feed opening 5 of the central feed hopper 8, is thrown into the middle stone lining cavity 2 of the middle machine body 3 from the passage of the rotor 7, and is accumulated in the middle stone lining cavity 2, and is accumulated to the repose angle of the stone to form a stone lining. The subsequent stone will strike this stone lining, protecting the stone lining cavity 2, the stone will be broken by the stone and stone lining strike, and a large amount of sand and stone dust will be produced, the sand falling from the space between the central body 3 and the rotor 7. Air enters from the central feed inlet 5 and is thrown out by the rotor, positive air pressure is formed between the stone lining cavity 2 and the rotor, negative air pressure is formed at the feed inlet position of the rotor 7, part of dust air mixed with stone powder reaches the distributing hopper 6 and is sucked into the rotor by the negative air pressure of the feed inlet above the rotor 7, and the throwing and striking are repeated to form more dust; another part of the dust air falls with the stone and is discharged from the lower part of the machine.
FIG. 3 is a schematic view of an independent suction chamber provided by the present invention. The independent air suction cavity 9 consists of an upper air suction pipe 10, a lower air suction pipe 11 and an independent cavity, wherein the lower air suction pipe 11 is used for sucking dust air from an air positive pressure area of the stone lining cavity, the upper air suction pipe 10 is used for conveying the dust air to a dust removal and dedusting system, and the independent cavity is used for conveying the dust air in a closed mode and does not suck air at other parts.
Fig. 4 is an assembled schematic diagram of the independent suction chamber and the middle body provided by the invention. The independent suction cavity 9 is arranged in the middle machine body 3 of the vertical shaft type impact crusher, the lower suction pipe 11 on the independent suction cavity 9 stretches into the stone lining cavity of the middle machine body 3, the lower suction pipe 11 directly sucks positive pressure dust air flow of the stone lining cavity, the stone lining cavity 2 is generally annularly provided with vertical partition boards, the stone lining cavity is divided into independent spaces by the vertical partition boards, the stone lining is blown away by air flow driven by high-speed rotation of the rotor 7, and the space divided by each vertical partition board is provided with the lower suction pipe 11, so that the positive pressure dust air flow of each divided space can be sucked into the dust and dust removing system in time.
FIG. 5 is an illustration of the assembly of the independent suction chamber with the middle body and suction overflow hopper provided by the present invention. The upper air suction pipe 10 of the independent air suction cavity 9 passes through the bucket bottom plate 20 of the air suction overflow inlet hopper 12 and is connected to a pipeline of the powder and dust removing system. Like this, the induced draft pipeline of the dust removal dust pelletizing system directly sucks the dust air current that middle part organism 3 stone lining chamber 2 region produced, can not suck overflow window 4 and center pan feeding mouth 5 and get into the air of machine, avoided the inefficiency operation that removes the dust.
FIG. 6 is a schematic diagram of the assembly of the independent suction chamber, the middle body and the suction center hopper provided by the invention. The upper air suction pipe 10 of the independent air suction cavity 9 passes through the hopper bottom plate 20 of the air suction center feeding hopper 13 and is connected to a pipeline of the powder and dust removing system. Like this, the induced draft pipeline of the dust removal dust pelletizing system directly sucks the dust air current that middle part organism 3 stone lining chamber 2 region produced, can not suck the air that center pan feeding mouth 5 got into the machine, avoided the inefficiency operation that removes the dust.
The independent suction chamber 9 shown in fig. 4 can also be installed in the old model of the original design, and only a small amount of modification is needed to the stone lining chamber 2, the overflow feeding hopper 1 at the upper part or the central feeding hopper 8: i.e. the upper ring plate of the stone lining cavity 2 and the upper overflow hopper 1 or the bucket bottom plate 20 of the central hopper 8 are provided with corresponding pipe holes. The independent air suction cavity 9 can change the originally designed internal circulation model into a powder and dust removal vertical shaft type impact crusher.
Fig. 7 is a schematic view of a central suction stone liner cavity provided by the present invention. The middle air suction stone lining cavity 14 integrates the stone lining cavity 2 and the air suction function and consists of an inner baffle 15, an upper sealing ring 16, an outer ring baffle 17, an upper air suction pipe 10 and the like. The space enclosed by the inner baffle 15, the upper sealing ring 16 and the outer ring baffle 17 is formed by stone accumulating below to form a stone lining cavity, the space above the stone lining cavity can contain dust air, the space is not divided, the upper air suction pipe 10 is arranged on the upper sealing ring 16, and the upper air suction pipe 10 extracts dust air from the space.
Fig. 8 is a schematic diagram of the assembly of the middle suction stone lining cavity and the middle body provided by the invention. The middle air suction stone lining cavity 14 is arranged in the middle machine body 3 of the crusher as a part, and can be conveniently assembled and disassembled to replace different cavity types.
FIG. 9 is a schematic diagram of the assembly of the middle suction stone liner chamber with the middle body and suction overflow hopper provided by the present invention. The powder-removing and dedusting system is characterized in that the powder-removing and dedusting system is further provided with a distributing hopper 6 on the basis of fig. 8, an induced draft overflows into the hopper 12, an upper air suction pipe 10 of a middle induced draft stone lining cavity 14 passes through a hopper bottom plate 20 of the induced draft overflows into the hopper 12 and is connected to the powder-removing and dedusting system, the upper air suction pipe 10 is directly communicated with a space surrounded by an inner baffle 15, an upper sealing ring 16 and an outer ring baffle 17 of the middle induced draft stone lining cavity 14, dust air in the space is directly extracted by a pipeline of the powder-removing and dedusting system through the upper air suction pipe 10, and external air entering from a central feed opening 5 and an overflow window 4 is not extracted, so that the dust air extracting efficiency is high.
Fig. 10 is a schematic diagram showing the assembly of the middle suction stone lining cavity, the middle machine body and the upper part of the center feeding material. The powder-removing and dedusting system is characterized in that the powder-removing and dedusting system is filled with the distributing hopper 6 on the basis of fig. 8, the air suction center is filled with the hopper 13, the upper air suction pipe 10 of the middle air suction stone lining cavity 14 penetrates through the hopper bottom plate 20 of the air suction center inlet hopper 13 and is connected to the powder-removing and dedusting system, the upper air suction pipe 10 is directly communicated with a space surrounded by the inner baffle 15, the upper sealing ring 16 and the outer ring baffle 17 of the middle air suction stone lining cavity 14, dust air in the space is directly extracted through the upper air suction pipe 10, external air entering from the center feed inlet 5 is not extracted, and the dust air extracting efficiency is high.
Fig. 11 is a schematic diagram of an induced draft overflow hopper according to the present invention. The suction overflow hopper 18 is formed by passing an upper suction pipe 19 through a hopper bottom plate 20, and a lower baffle 21 is connected below the hopper bottom plate 20.
Fig. 12 is a schematic diagram of the assembly of the middle body and the upper open stone lining cavity provided by the invention. The upper open stone liner cavity 22 is a product with the upper sealing plate and the inner ring plate removed from the middle stone liner cavity 2, and is used together with the induced draft overflow hopper 18.
Fig. 13 is an assembly schematic diagram of the suction overflow hopper and the middle machine body provided by the invention. The middle machine body 3, the upper open stone lining cavity 22 and the air suction type overflow hopper 18 are assembled, and a hopper lower baffle 21, a hopper bottom plate 20 and an outer annular plate of the upper open stone lining cavity 22 or an outer annular plate of the middle machine body 3 of the air suction type overflow hopper 18 enclose an annular space. Below the annular space is a stone lining cavity, in which area the stone and air ejected by the rotor 7 create a large amount of positive pressure dust. The upper part of the annular space is connected with a powder and dust removing system through a plurality of upper air suction pipes 19. The pipeline of the dust removing and dedusting system directly extracts dust air in the annular space through the upper air suction pipe 19 of the bucket, does not absorb outside air entering from the central feed inlet 5 and the overflow window 4, and has high dust air extracting efficiency.
Fig. 14 is a schematic view of an induced draft type center bucket according to the present invention. The suction center hopper 23 is formed by passing the upper suction pipe 19 through the hopper bottom plate 20, and the lower baffle 21 is connected to the lower side of the hopper bottom plate 20.
Fig. 15 is a schematic diagram illustrating assembly of an induced draft center bucket and a middle part according to the present invention. The middle body 3, the upper open stone lining cavity 22 and the air suction type center hopper 23 are assembled, and the hopper lower baffle 21, the hopper bottom plate 20 and the outer annular plate of the upper open stone lining cavity 22 or the outer annular plate of the middle body 3 of the air suction type center hopper 23 form an annular space. Below the annular space is a stone lining cavity, in which area the stone and air ejected by the rotor 7 create a large amount of positive pressure dust. The upper part of the annular space is connected with a powder and dust removing system through a plurality of upper air suction pipes 19. The pipeline of the dust removing and dedusting system directly extracts dust air in the annular space through the upper air suction pipe 19 of the bucket, does not absorb external air entering from the center feed inlet 5, and has high dust air extraction efficiency.
Fig. 16 is a schematic view of an air suction pipe at the lower part of the vertical shaft type impact crusher for powder and dust removal. The side walls of the discharging channels on the two sides of the lower machine body 25 are connected with a lower air suction pipe 24, the lower air suction pipe 24 is connected with a dust removing and dedusting system, and the dust removing and dedusting system extracts dust air reaching the lower blanking channel through the lower air suction pipe 24.
Fig. 17 is a schematic diagram of the flow of air in the vertical shaft type impact crusher for dust removal. Outside air enters from the central feed opening 5 and the overflow window 4 of the air suction overflow hopper 18, the entering air is sucked by negative pressure above the rotor 7, and accelerated by the rotor 7, and the air and materials are thrown out from the throwing opening of the rotor 7 at high speed to strike the stone lining accumulated on the upper open cavity 22 in the middle machine body 3. The materials are crushed to generate a large amount of dust, the dust is mixed with air to form positive pressure dust air, and the positive pressure dust air is pumped to a dust removing and dedusting system by an upper hopper air suction pipe 19 above the stone lining cavity to carry out dust removing and dedusting operation. When part of dust air falling along with the material reaches the lower air suction pipe 24 area of the lower machine body 25, the dust air is pumped to the dust removing and dedusting system by the lower air suction pipe 24.
Fig. 18 is a schematic diagram showing the connection between an air suction pipe and a dust removal system on a vertical shaft type impact crusher for dust removal. In this example, there are 4 upper air suction pipes 10 uniformly distributed on the bottom plate 20 of the suction overflow hopper 18 to uniformly suck dust air from the positive pressure area of the crushing cavity. The upper end surface of the air suction pipe 10 is converged above the air suction overflow hopper 18 and then is connected with the exhaust pipe 26 of the dust removing and dedusting system, and the sucked dust air enters the dust removing and dedusting system to carry out dust removing and dedusting operation. The feed pipe 27 is used to break up the passage of material into the suction overflow hopper 18.
The invention has been described above by way of example with reference to the accompanying drawings, it is clear that the implementation of the invention is not limited to the above-described manner, but that various modifications of the method concept and the technical solution of the invention are only adopted, or the method and the technical solution of the invention are directly applied to other occasions by the modifications, and are all within the scope of the invention.
Claims (7)
1. The vertical shaft type impact crusher for dust removal and dust removal is characterized by comprising an upper air suction pipe, a lower air suction pipe and an air suction ring channel, wherein the lower air suction pipe is arranged at the lower part of the air suction ring channel; the lower air suction pipe directly sucks positive pressure dust air flow of the stone lining cavity, the stone lining cavity is annularly provided with vertical partition boards, the vertical partition boards divide the stone lining cavity into independent spaces, the air flow driven by the rotor rotating at high speed is reduced to blow away the stone lining, and each space divided by each vertical partition board is provided with one lower air suction pipe; the upper air suction pipe is directly communicated with the positive pressure air space at the periphery of the rotor, the upper air suction pipe is not directly communicated with other air normal pressure and negative pressure spaces, the upper air suction pipe and the other air normal pressure and negative pressure spaces form indirect communication relation only through a rotor channel, the upper air suction pipe is communicated with an exhaust pipeline of the powder removing and dust removing system, and an exhaust fan of the powder removing and dust removing system sucks the positive pressure dust air at the periphery of the rotor through the exhaust pipeline, the upper air suction pipe and the lower air suction pipe.
2. The vertical shaft type impact crusher for dust removal and dust removal according to claim 1, wherein the middle suction stone lining cavity is formed by enclosing an inner baffle plate, an upper sealing ring and an outer ring baffle plate, the upper suction pipe is arranged on the upper sealing ring, passes through a suction overflow hopper or a hopper bottom plate of the suction center inlet hopper, and is connected to the dust removal and dust removal system.
3. The vertical shaft type impact crusher for dust removal and dust removal according to claim 1, wherein the upper air suction pipe, the overflow inlet hopper and the lower baffle plate are combined into an air suction type overflow hopper, the upper air suction pipe is an upper air suction pipe, the upper air suction pipe penetrates through a hopper bottom plate of the air suction type overflow hopper, the lower baffle plate is connected below the hopper bottom plate, an annular space is formed by the lower baffle plate of the air suction type overflow hopper, the hopper bottom plate and an outer wall plate of the middle machine body, and a stone lining cavity is arranged below the annular space.
4. The vertical shaft type impact crusher for dust removal and dust removal according to claim 1, wherein the upper air suction pipe and the central feeding hopper are combined into an air suction type central hopper, the upper air suction pipe is an upper air suction pipe, the upper air suction pipe penetrates through a hopper bottom plate of the air suction type feeding hopper, the lower baffle plate is connected below the hopper bottom plate, an annular space is defined by the lower baffle plate of the air suction type feeding hopper, the hopper bottom plate and an outer wall plate of the middle machine body, and a stone lining cavity is arranged below the annular space.
5. The vertical shaft type impact crusher for removing powder and dust according to claim 1, wherein the side walls of the discharging channels on two sides of the lower body of the vertical shaft type impact crusher for removing powder and dust are connected with a lower air suction pipe, and the lower air suction pipe is connected with an exhaust pipe of a powder removing and dust removing system.
6. A method for removing dust by using a vertical shaft type impact crusher for removing dust and powder as claimed in claim 1, wherein the vertical shaft type impact crusher for removing dust and powder sucks air and stone through a central feed opening or overflow window of an upper feed hopper, the air and stone enter the center of a rotor, are accelerated by the rotor and are sprayed on a stone lining cavity around the rotor, a large amount of dust is generated by crushing the material, the dust is mixed with the air to form positive pressure dust air, the positive pressure dust air is sucked away by an upper suction pipe communicated with the stone lining cavity, enters an exhaust pipe of a dust removing and removing system communicated with the upper suction pipe, and enters the dust removing and removing system for operation.
7. The method of claim 6, wherein the crushed material from which a large amount of dust has been removed falls into a lower housing of the main machine, and the dust is sucked away by a dust removal system exhaust pipe connected to the lower suction pipe, thereby further reducing the dust.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811059959.7A CN109012979B (en) | 2018-09-12 | 2018-09-12 | Vertical shaft type impact crusher for removing powder and dust and method for removing powder and dust |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201811059959.7A CN109012979B (en) | 2018-09-12 | 2018-09-12 | Vertical shaft type impact crusher for removing powder and dust and method for removing powder and dust |
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| CN109012979B true CN109012979B (en) | 2023-10-03 |
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| CN110202527B (en) * | 2019-06-14 | 2023-06-16 | 南昌矿机集团股份有限公司 | Device and method for disassembling and assembling upper frame of single-cylinder hydraulic cone crusher |
| CN112844634B (en) * | 2020-12-31 | 2022-07-26 | 湖南华通粉体设备科技有限公司 | Nail nest mill |
| CN112791838A (en) * | 2021-01-30 | 2021-05-14 | 重庆三铭重工有限公司 | Automatic adjusting structure and adjusting method for feed inlet of vertical shaft type impact crusher |
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| CN102764686A (en) * | 2012-07-27 | 2012-11-07 | 福建南方路面机械有限公司 | Impact crusher capable of adjusting aggregate fineness modulus |
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Address after: 330004 No. 300, Hongwan Avenue, Wanli District, Nanchang City, Jiangxi Province Applicant after: Nanchang Mining Machinery Group Co.,Ltd. Address before: 330004 No. 300, Hongwan Avenue, Wanli District, Nanchang City, Jiangxi Province Applicant before: NANCHANG MINERAL SYSTEMS Co.,Ltd. |
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