Dust removal system of cone crusher

Abstract

According to the novel dust removal system of the cone crusher, a novel sealing device is adopted to solve the problem that dust accumulated in a gap due to the fact that the gap exists between a cone crusher body and a concrete foundation and the cone crusher body and the concrete foundation move relative to each other and leak from a bearing part, and a sealing cavity is formed in the bottom of the crusher; relative movement of the crusher body and the base is buffered, sealing of the sealing device is achieved, dust on the base is prevented from diffusing into the environment, air is blown into the sealing device through the air pipe to maintain positive pressure, and dust in a crushing cavity is prevented from entering a base gap through a base bearing; a dust collection cover provided with an air curtain and a baffle is placed on the crusher feeding hopper, and dust in the dust collection cover is sucked out through the upper dust removal pipeline. Besides, the dust removal chamber composed of the baffle and the rubber curtain is arranged at the tail end of the blanking pipeline of the crusher, dust in the dust removal chamber is sucked through negative pressure, and finally the dust is sent to a remote gas-liquid entrainment dust remover for dust removal, so that a good dust removal effect is achieved.

Description

Technical Field

[0001] The invention relates to the technical field of cone crushers, in particular to a dust removal system of a cone crusher. Background Art

[0002] Cone crusher is a crushing equipment used in metallurgy, construction, chemical and other industries. The motor drives the eccentric sleeve to rotate, causing the moving cone to swing inside the eccentric sleeve, and the raw materials are crushed by the extrusion and impact force between the moving cone and the fixed cone. Existing cone crushers generate a lot of dust particles when in use. Excessive dust in the working environment is inhaled into the human airway, causing a variety of diseases, which poses a great threat to the health of workers in the field; in addition, the floating dust particles in the factory building can easily enter the lubrication system of the cone crusher through the gap, causing the lubrication system of the cone crusher to fail, resulting in great economic losses. Therefore, the transformation of the dust removal system of this type of cone crusher is an urgent problem to be solved.

[0003] Dust is mainly generated in three places near the particle cone crusher, namely the feed hopper part, the gap between the crusher base and the concrete foundation, and the discharge port of the cone crusher. Since there is a certain height difference between the feed hopper and the discharge port and the corresponding conveyor belt, a large amount of flying dust particles will be generated due to mutual collision when the ore falls from the feeding conveyor belt to the feed hopper and from the crusher discharge port to the discharge conveyor belt; since the cone crusher adopts an eccentric sleeve to grind the ore, there is inertia of mutual movement between the crusher body and the ground, so it is necessary to set a spring between the crusher base and the concrete foundation to buffer the relative movement between the two, which inevitably produces a certain gap, and the sealing degree of the bearing part in the center of the crusher base is limited, and dust is easy to leak from the bearing gap, while the gap between the base and the concrete foundation is narrow and there is mutual movement on both sides of the gap, which makes it difficult to clean it in real time or achieve relative sealing, resulting in a large amount of dust accumulation and dust overflow on the ground platform between the gaps. Summary of the invention

[0004] Technical issues to be solved The purpose of this patent is to provide a dust removal system for a cone crusher, which is designed to handle the dust leaked from the gap between the cone crusher's feed hopper, discharge port and base, and prevent the dust from drifting into the factory air, thereby affecting the working environment of the crusher workshop.

[0005] Technical Solution This patent provides the following technical solutions: The present invention proposes a new dust removal system for a cone crusher, the structure of which includes a cone crusher body, a crusher feed hopper dust hood with three baffles, a feed hopper air curtain, a crusher base sealing device, a fan connected to the sealing device, an air duct, a material delivery pipe, a dust removal chamber at the end of the material delivery pipe, a dust collection hood in the dust collection chamber, an upper dust removal pipe connected to the feed hopper dust collection hood, a lower dust removal pipe connected to the dust collection hood in the dust collection chamber, a gas-liquid suction dust collector, a pressure sensor, a PLC control system, a control cabinet, etc.

[0006] When the ore is conveyed into the feed hopper, the dust generated by the impact is separated from the outside world by the dust hood baffle and the wind curtain, and is sucked into the dust hood above the feed hopper. The dust hood is connected to the gas-liquid suction dust collector through the upper dust removal pipeline, which reduces the leakage of splashed dust and improves the dust removal efficiency.

[0007] A sealing device is arranged between the crusher base and the concrete foundation, and the sealing device comprises an annular upper plate 1 and a corresponding upper plate sealing gasket, an annular lower plate and a corresponding lower plate sealing gasket. The upper plate and its sealing gasket and the lower plate and its sealing gasket are provided with bolt holes, which are respectively connected with the base of the cone crusher and the concrete foundation by bolts. The elastic sealing gasket sandwiched between the two solid devices has a certain sealing effect. The upper plate of the sealing device is designed with an annular protrusion, and the annular protrusion has two annular grooves above and below. The four grooves are provided with sealing rings made of rubber with the same width as the grooves. The height of the sealing ring is guaranteed to be always higher than a part of the edge of the groove. The side of the sealing ring close to the inside of the groove is connected to the bottom of the groove by a spring, and the spring always keeps a compressed state. The inner wall of the upper part of the lower plate of the sealing device is provided with An annular groove, the groove depth is the sum of the protruding edge of the upper plate and the vibration amplitude of the crusher base. The annular protrusion of the upper plate is placed in the upper groove of the lower plate. No matter how the annular protrusion of the upper plate moves in the groove of the lower plate following the crusher base, the four sealing rings of the upper plate are always pressed tightly in the groove of the lower plate by the spring in a compressed state; an air duct hole is arranged on the wall of the lower plate of the sealing device, which is connected to the fan through the air duct. The fan continuously blows air into the sealing device, so that the sealing device always maintains a certain positive pressure to prevent dust from diffusing from the crushing chamber through the bearing in the center of the base to between the base and the concrete foundation, causing dust accumulation. The wind flow carrying dust is finally sucked into the dust removal pipeline by the dust removal system at the feeding hopper and the dust removal system at the drop port, and finally sent to the gas-liquid suction dust collector for dust removal.

[0008] It can also be directly connected to the gas-liquid suction dust collector through an air duct so that the sealing device always maintains a certain negative pressure, thereby sucking the dust in the sealing device into the gas-liquid suction dust collector, thereby simplifying the pipelines in the system and improving the dust removal effect.

[0009] The material dropping pipe below the crusher's material dropping port is set as an obliquely arranged circular pipe. The end of the material dropping pipe is a relatively sealed dust removal chamber. The dust removal chamber is composed of a steel plate welded to the material dropping pipe on the top, a dust removal chamber baffle and a rubber curtain around the steel plate. The upper part of the material dropping conveyor belt is wrapped by the dust removal chamber to prevent dust from overflowing from the material dropping part of the material dropping conveyor belt; two small dust collection chamber dust hoods are welded on both sides of the material dropping pipe at the top of the dust removal chamber. The dust collection hood is connected to the gas-liquid suction dust collector through the dust removal pipe, and the dust in the dust removal chamber is sucked by negative pressure suction.

[0010] Preferably, a dust hood with the same size as the feeding hopper is fixed above the feeding hopper by a bracket, an air curtain is provided on the side of the dust hood close to the conveyor belt, and dust hood baffles are welded on the other three side edges. The lower edge of the dust hood baffle is connected to the feeding hopper to form a relatively sealed space to prevent dust leakage.

[0011] Preferably, two wind curtains of the same width as the dust hood on this side are provided on the side of the dust hood close to the ore conveyor belt. The outermost wind curtain is arranged inwardly at an angle of 3-5 degrees to the vertical direction, and the innermost wind curtain is arranged inwardly at an angle of 18-20 degrees to the vertical direction, so as to prevent the dust splashed by the falling material from overflowing the feed hopper without affecting the normal transportation of the ore.

[0012] Preferably, a dust removal chamber is provided below the material dropping pipe, and vertical dust removal chamber baffles are welded on the two side edges of the top steel plate of the dust removal chamber parallel to the conveying square of the conveyor belt, and the other two sides are soft rubber curtains made of rubber, which achieve relative sealing of the material dropping part without hindering the material transmission on the conveyor belt to prevent dust from overflowing.

[0013] Preferably, the dust hood, dust chamber dust hood, dust hood baffle and dust chamber baffle of the cone crusher are all made of 304 stainless steel.

[0014] Preferably, the rubber sealing ring and rubber curtain of the cone crusher are made of fluororubber that is resistant to high temperature and oxidation corrosion.

[0015] Preferably, a PLC dust removal monitoring system is provided, and pressure sensors are provided below the dust collecting cover of the crusher feed hopper, inside the base sealing device, and inside the dust removal chamber of the crusher discharge port. The PLC system monitors the pressure conditions of various parts in real time through sensors to ensure that the feed hopper and the discharge port are in a negative pressure state for a long time, and that the crusher base and the concrete foundation are in a positive or negative pressure state for a long time. Beneficial Effects

[0016] Compared with the existing technology, this system is designed with a positive pressure dust prevention solution for the gap between the cone crusher base and the concrete foundation and an airflow linkage solution for the entire cone crusher, which solves the problem that dust accumulation in the gap between the cone crusher base and the concrete foundation cannot be removed in time due to the relative movement between the cone crusher and the ground, thereby preventing pollution of the crushing workshop environment. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 Schematic diagram of the overall structure Figure 2 A cross-sectional view of the base sealing device Figure 3 A top view of the base sealing device Figure 4 A partial cross-sectional view of the base sealing device Figure 5 This is a cross-sectional view (front view) of the feeding hopper dust removal device. Figure 6 Cross-sectional view of the hopper dust removal device (left view) Figure 7 Top view of the dust removal device for the feeding hopper Figure 8 This is a cross-sectional view of the dust removal system at the discharge port (front cross-sectional view and left cross-sectional view of side A) In the figure: 1. Crusher body; 2. Feed hopper; 3. Gas-liquid suction dust collector; 4. Sealing device; 5. Concrete foundation; 6. Dropping pipe; 7. Dust removal chamber; 8. Feeding conveyor belt; 9. Dropping conveyor belt; 10. Dust collection hood of dust removal chamber; 11. Dust collection hood; 12. Upper dust removal pipe; 13. Wind curtain; 14. Fan; 15. Air duct; 16. Lower dust removal pipe; 17. Upper plate; 18. Upper plate sealing gasket; 19. Bolt hole; 20. Sealing ring; 21. Spring; 22. Lower plate; 23. Lower plate sealing gasket; 24. Air duct hole; 25. Rubber curtain; 26. Dust collection hood baffle; 27. Dust removal chamber baffle; 28. Groove; 29. ​​Recess; 30. Annular protrusion. DETAILED DESCRIPTION

[0018] In order to make the technical means, creative features, implementation purposes and characteristics adopted by the present invention easier to understand, the content of this invention will be further elaborated in detail in conjunction with the drawings of specific implementation methods. The embodiments and descriptions are only used to illustrate the principles and methods of the present invention. This patent will also have various changes and improvements, which are all within the scope of the invention to be protected. The scope of protection claimed by this patent is defined by the attached claims and their equivalents.

[0019] like Figure 1-8As shown, a dust removal system of a cone crusher includes a crusher body 1, a feeding hopper 2, a gas-liquid suction dust collector 3, a sealing device 4, a concrete foundation 5, a material dropping pipe 6, a dust removal chamber 7, a feeding conveyor belt 8, a material dropping conveyor belt 9, a dust collecting hood 10 in the dust removal chamber, a dust collecting hood 11, an upper dust removal pipe 12, an air curtain 13, a fan 14, an air duct 15, a lower dust removal pipe 16, an upper plate 17, an upper plate sealing gasket 18, a bolt hole 19, a sealing ring 20, a spring 21, a lower plate 22, a lower plate sealing gasket 23, an air duct hole 24, a rubber curtain 25, a dust collecting hood baffle 26, a dust removal chamber baffle 27, a groove 28, a groove 29, and an annular protrusion 30.

[0020] In view of the fact that dust is easily accumulated in the gap between the cone crusher base and the concrete foundation 5 and there is relative movement between the cone crusher and the concrete foundation 5, a sealing device 4 is used to seal the gap between the cone crusher base and the concrete foundation 5, forming a sealed cavity between the cone crusher base and the concrete foundation 5, effectively sealing the dust in the sealed cavity, and reducing the pollution of the dust to the factory environment. The sealing device 4 includes an annular upper plate 17 and a corresponding upper plate sealing gasket 18, an annular lower plate 22 and a corresponding lower plate The sealing gasket 23, the upper plate 17 and the upper plate sealing gasket 18, the lower plate 22 and the lower plate sealing gasket 23 are provided with bolt holes 19, which are respectively connected to the base of the cone crusher and the concrete foundation 5 by bolts. The elastic sealing gasket sandwiched between the two solid devices has a certain sealing effect; the upper plate 17 of the sealing device 4 is designed with an annular protrusion 30, and the annular protrusion 30 has two annular grooves 29 above and below. The four grooves are provided with rubber sealing rings 20 that are consistent with the width of the grooves. The height of the sealing ring 20 is guaranteed to always be higher than a part of the edge of the groove. The side of the sealing ring 20 close to the inside of the groove is connected to the bottom of the groove through a spring 21, and the spring 21 is always kept in a compressed state; an annular groove 28 is arranged on the inner side wall of the upper part of the lower plate 22 of the sealing device, and the groove depth is the sum of the protruding edge of the upper plate and the vibration amplitude of the crusher base. The annular protrusion 30 of the upper plate is placed in the upper groove 28 of the lower plate. No matter how the annular protrusion 30 of the upper plate moves in the groove 28 of the lower plate following the crusher base, the four sealing rings 20 of the upper plate are always pressed tightly in the groove 28 of the lower plate by the spring 21 in a compressed state; the sealing An air duct hole 24 is provided on the wall of the lower plate of the device, which is connected to the fan 14 through the air duct 15. The fan continuously blows air into the sealing device 4 to maintain a certain positive pressure inside the device, thereby preventing the dust in the crushing chamber of the crusher from entering the gap between the base and the concrete through the bearing in the center of the base, causing dust accumulation and overflow in the gap of the base. Another solution is to connect the air duct 15 to the gas-liquid suction dust collector 3, and form a negative pressure in the sealing device 4 through the suction force of the gas-liquid suction dust collector 3, so as to suck the dust into the gas-liquid suction dust collector 3 for treatment.

[0021] A square tube funnel-shaped dust hood 11 of comparable size is fixed by a bracket directly above the square crusher feeding hopper 2. Two air curtains 13 are arranged on the edge of the dust hood 11 close to the feeding conveyor belt 8. Three steel dust hood baffles 26 are welded on the other three side edges. The lower edge of the dust hood baffle 26 is connected to the corresponding edge of the feeding hopper 2 by bolts; the width of the air curtain 13 is equivalent to the edge width of the dust hood 11. The outermost air curtain 13 is arranged at an angle of 3 degrees to the vertical direction inwardly, and the innermost air curtain 13 is arranged at an angle of 20 degrees to the vertical direction inwardly. The air curtain 13 is connected to the three dust collectors. The hood baffle 26 forms a relatively sealed space above the cone crusher feed hopper 2. The end of the feeding conveyor belt 8 penetrates deep into the space to ensure that when the ore falls into the feeding hopper from the end of the feeding conveyor belt, the combined action of the wind curtain and the dust hood baffle does not affect the normal transportation of the ore, and the dust generated is always kept inside the dust hood and its baffle without overflowing; the upper dust removal duct 12 leading to the gas-liquid suction dust collector is connected above the dust hood 11, and a certain negative pressure is maintained in the dust hood baffle 26 and the wind curtain 13, and the dust generated in the space below the dust hood 11 is sucked by the negative pressure.

[0022] The discharge port of the cone crusher is connected to a discharge pipe 6, which is divided into two parts: a square-circular reducer and an inclined circular pipe. The oblique arrangement of the pipe can provide a certain buffer to prevent the ore from falling vertically and generating greater dust splashing. A rectangular dust removal chamber 7 is arranged at the end of the discharge pipe 6. The top of the dust removal chamber 7 is a steel plate welded to the end of the discharge pipe 6. Below the steel plate is a discharge conveyor belt 9 parallel to the discharge pipe 6. Vertical dust removal chamber baffles 27 are welded on both sides of the steel plate parallel to the forward direction of the conveyor belt. The two sides of the steel plate are perpendicular to the forward direction of the conveyor belt. The edge is connected with a rubber curtain 25 as long as the surface of the conveyor belt. The rubber curtain 25 and the dust removal chamber baffle 27 form a relatively sealed space at the blanking position of the blanking conveyor belt 9 without affecting the normal transportation of the ore. A small dust removal chamber dust hood 10 is welded on the top steel plate of the dust removal chamber on both sides of the blanking pipe 6. The two small dust removal chamber dust hoods 10 are connected to the distant gas-liquid suction dust collector 3 through the lower dust removal pipe 16, so as to maintain a certain negative pressure in the dust removal chamber, and the dust generated inside is sucked away and sent to the gas-liquid suction dust collector 3 for treatment.

[0023] The present invention is designed with a PLC dust removal monitoring system. Pressure sensors are respectively arranged below the dust collecting cover of the crusher feed hopper, inside the base sealing device, and in the dust removal chamber of the crusher discharge port. The PLC system monitors the pressure conditions of various parts in real time through the sensors to ensure that the feed hopper and the discharge port are in a negative pressure state for a long time, the sealing cavity between the crusher base and the concrete foundation is in a positive pressure state for a long time, or the sealing cavity between the crusher base and the concrete foundation is in a negative pressure state for a long time according to the need of the working mode of suction from the sealing cavity between the crusher base and the concrete foundation.

[0024] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be regarded as exemplary and non-limiting from all points of view, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims are included in the present invention, and any reference numerals in the claims should not be regarded as limiting the claims involved.

[0025] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any slight modification, equivalent substitution and improvement made to the above embodiment based on the technical essence of the present invention should be included in the protection scope of the technical solution of the present invention.

Claims

1. A dust removal system for a cone crusher, comprising a crusher body (1), a feed hopper (2), a gas-liquid suction dust collector (3), a concrete foundation (5), a material discharge pipe (6), a feed conveyor belt (8), and a material discharge conveyor belt (9), characterized in that: The utility model also comprises a sealing device (4), a dust collecting cover (11), an upper dust removal duct (12), a fan (14), and an air duct (15). The sealing device 4 comprises an annular upper plate (17) and a corresponding upper plate sealing gasket (18), an annular lower plate (22) and a corresponding lower plate sealing gasket (23). The upper plate (17) and the upper plate sealing gasket (18), the lower plate (22) and the lower plate sealing gasket 23 are provided with bolt holes (19), which are respectively connected to the base of the cone crusher and the concrete foundation (5) by bolts. The upper plate (17) is designed with an annular protrusion (30), and the annular protrusion (30) has two annular grooves (29) on the upper and lower sides, and sealing rings (20) having the same width as the grooves are provided in the four grooves. The sealing rings (20) are provided in the four grooves. The height of the ring (20) is ensured to always be higher than a portion of the edge of the groove (29). The side of the sealing ring (20) close to the inside of the groove (29) is connected to the bottom of the groove through a spring (21). An annular groove (28) is provided on the upper inner wall of the lower plate (22). The depth of the groove (28) is the sum of the protruding edge of the upper plate and the vibration amplitude of the crusher base. The annular protrusion (30) of the upper plate is placed in the upper groove (28) of the lower plate. An air duct hole (24) is provided on the wall of the lower plate (22) of the sealing device (4). The air duct hole (24) is connected to the fan (14) through the air duct (15). The dust collecting hood 11 is located above the feeding conveyor belt (8). The dust collecting hood 11 is connected to an upper dust removal duct (12) leading to the gas-liquid suction dust collector (3).

2. The dust removal system of a cone crusher according to claim 1, characterized in that: It also comprises a dust removal chamber (7), a dust collection hood (10) for the dust removal chamber, a lower dust removal pipe (16), a rubber curtain (25), and a dust removal chamber baffle (27). The dust removal chamber (7) is arranged at the end of the blanking pipe (6). Vertical dust removal chamber baffles (27) are arranged on the edges on both sides parallel to the forward direction of the blanking conveyor belt (9). Rubber curtains (25) are arranged on the edges on both sides perpendicular to the forward direction of the blanking conveyor belt (9). Dust collection hoods (10) are arranged on the tops of the dust removal chambers (7) on both sides of the blanking pipe (6). The dust collection hoods (10) for the dust removal chambers are connected to the gas-liquid suction dust collector (3) via the lower dust removal pipe (16).

3. The dust removal system of a cone crusher according to claim 2, characterized in that: The dust hood (11) comprises a dust hood baffle (26) and an air curtain (13). The air curtain (13) is arranged on one edge of the dust hood (11) close to the feeding conveyor belt (8), and dust hood baffles (26) are arranged on the other three side edges. The lower edge of the dust hood baffle (26) is connected to the corresponding edge of the feeding hopper (2).

4. The dust removal system of a cone crusher according to claim 3, characterized in that: The width of the air curtain 13 is equivalent to the edge width of the dust collecting cover 11.

5. The dust removal system of a cone crusher according to claim 4, characterized in that: Two wind curtains (13) are provided, the outermost wind curtain (13) is arranged inwardly at an angle of 3-5 degrees to the vertical direction, and the innermost wind curtain (13) is arranged inwardly at an angle of 18-20 degrees to the vertical direction.

6. The dust removal system of a cone crusher according to claim 5, characterized in that: The end of the feeding conveyor belt (8) extends deep into the dust collecting cover (11) inside the air curtain (13).

7. The dust removal system of a cone crusher according to claim 1, characterized in that: Instead of using a fan (14) to blow air into the sealing device (4) to form a positive gas pressure, the sealing device (4) is connected to the gas-liquid entrainment dust collector (3) through an air duct (15), and a negative pressure is formed in the sealing device (4) through the suction force of the gas-liquid entrainment dust collector (3), so that the dust is sucked into the gas-liquid entrainment dust collector (3) for treatment.

8. The dust removal system of any cone crusher according to any one of claims 1 to 7, characterized in that: The system is equipped with a PLC dust removal monitoring system. Pressure sensors are installed under the dust collection cover of the crusher feed hopper, inside the base sealing device, and inside the dust removal chamber of the crusher discharge port. The PLC system monitors the pressure conditions of various parts in real time through sensors.

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