A dust removal system for a cone crusher

Abstract

The present invention proposes a new dust removal system for a cone crusher. This system addresses the problem of dust leaking from the bearings and accumulating in the gap between the cone crusher body and the concrete foundation, which is difficult to remove in a timely manner due to the relative movement between the two. A new sealing device is used to form a sealed chamber at the bottom of the crusher to cushion the relative movement between the crusher body and the base and seal the sealing device. While preventing dust from the base from diffusing into the environment, air is blown into the sealing device through an air duct to maintain positive pressure, preventing dust in the crushing chamber from entering the base gap through the base bearing. A dust hood equipped with an air curtain and baffles is placed on the crusher feed hopper, and dust in the hood is sucked out by the upper dust removal duct. Furthermore, a dust removal chamber consisting of a baffle and a rubber curtain is provided at the end of the crusher's discharge duct. Dust in the dust removal chamber is sucked in by negative pressure and finally sent to a remote gas-liquid suction dust collector for dust removal, achieving good dust removal results.

Description

Technical Field

[0001] The invention relates to the technical field of cone crushers and is a dust removal system for cone crushers. Background Art

[0002] A cone crusher is a type of crushing equipment used in industries such as metallurgy, construction, and chemicals. The motor drives the eccentric sleeve to rotate, causing the moving cone to swing inside the eccentric sleeve. The squeezing and impact forces between the moving and fixed cones crush the raw materials. Existing cone crushers generate a large amount of dust particles during use. Excessive dust in the working environment is inhaled into the human airway, causing various diseases and posing a significant threat to the health of workers on site. Furthermore, dust particles floating in the factory can easily enter the cone crusher's lubrication system through gaps, causing lubrication system failure and significant economic losses. Therefore, upgrading the dust removal system of this type of cone crusher is an urgent issue that needs to be addressed.

[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, when the ore falls from the feeding conveyor belt to the feed hopper and from the crusher discharge port to the discharge conveyor belt, a large amount of flying dust particles will be generated due to mutual collision; since the cone crusher adopts an eccentric sleeve to grind the ore, there is inertia of the crusher body relative to 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 problems to be solved

[0005] The purpose of this patent is to provide a dust removal system for a cone crusher, which is designed to deal with dust leaked from the gaps 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.

[0006] Technical Solution

[0007] 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 collection cover with three baffles, a feed hopper air curtain, a crusher base sealing device, a fan connected to the sealing device, an air duct, a blanking pipe, a dust removal chamber at the end of the blanking pipe, a dust collection cover for the dust collection chamber, an upper dust removal pipe connected to the feed hopper dust collection cover, a lower dust removal pipe connected to the dust collection cover for the dust collection chamber, a gas-liquid suction dust collector, a pressure sensor, a PLC control system, a control cabinet, etc.

[0008] 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 air 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 pipe, which reduces the leakage of splashed dust and improves the dust removal efficiency.

[0009] A sealing device is set between the crusher base and the concrete foundation. The sealing device includes 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 are provided with bolt holes and the lower plate and its sealing gasket are respectively connected to 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 always be 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 through a spring, and the spring always keeps it in 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 oscillation 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 set 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 to keep a certain positive pressure in the sealing device at all times, preventing dust from spreading 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 airflow carrying dust is finally sucked into the dust removal pipeline by the dust removal system at the feed hopper and the dust removal system at the discharge port, and finally sent to the gas-liquid suction dust collector for dust removal.

[0010] It can also be directly connected to the gas-liquid entrainment 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 entrainment dust collector, thereby simplifying the pipelines in the system and improving the dust removal effect.

[0011] The blanking pipe below the crusher's blanking port is set as an obliquely arranged circular pipe. The end of the blanking pipe is a relatively sealed dust removal chamber. The dust removal chamber is composed of a steel plate welded to the blanking pipe on the top, and a dust removal chamber baffle and a rubber curtain around the steel plate. The upper part of the blanking conveyor belt is wrapped by the dust removal chamber, which can prevent dust from overflowing from the blanking part of the blanking conveyor belt; two small dust collection chamber dust collection hoods are welded on both sides of the blanking 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.

[0012] 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.

[0013] Preferably, two air curtains of the same width as the dust collecting hood on this side are provided on the side of the dust collecting hood close to the ore conveyor belt. The outermost air curtain is arranged inward at an angle of 3-5 degrees to the vertical direction, and the innermost air curtain is arranged inward 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.

[0014] Preferably, a dust removal chamber is provided below the blanking pipe, and vertical dust removal chamber baffles are welded on the two side edges of the steel plate on the top 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 blanking part without hindering the transmission of materials on the conveyor belt to prevent dust from overflowing.

[0015] Preferably, the dust collecting hood, dust collecting chamber dust collecting hood, dust collecting hood baffle and dust collecting chamber baffle of the cone crusher are all made of 304 stainless steel.

[0016] 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.

[0017] 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 discharge port are in a negative pressure state for a long time, and that the pressure between the crusher base and the concrete foundation is in a positive or negative pressure state for a long time. Beneficial effects

[0018] 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. It 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

[0019] Figure 1 Schematic diagram of the overall structure

[0020] Figure 2 A cross-sectional view of the base sealing device

[0021] Figure 3 A top view of the base sealing device

[0022] Figure 4 A partial cross-sectional view of the base sealing device

[0023] Figure 5 This is a cross-sectional view (main view) of the feeding hopper dust removal device

[0024] Figure 6 Cross-sectional view of the hopper dust removal device (left view)

[0025] Figure 7 Top view of the hopper dust removal device

[0026] Figure 8 This is a cross-sectional view of the dust removal system at the discharge port (main cross-sectional view and left cross-sectional view of side A)

[0027] 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; 9. Dropping conveyor; 10. Dust collection chamber dust hood; 11. Dust collection hood; 12. Upper dust collection duct; 13. Air curtain; 14. Fan; 15. Air duct; 16. Lower dust collection duct; 17. Upper plate; 18. Upper plate gasket; 19. Bolt hole; 20. Sealing ring; 21. Spring; 22. Lower plate; 23. Lower plate gasket; 24. Dust duct hole; 25. Rubber curtain; 26. Dust collection hood baffle; 27. Dust removal chamber baffle; 28. Groove; 29. ​​Recess; 30. Annular protrusion. DETAILED DESCRIPTION

[0028] 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 with reference to 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 of this patent is defined by the attached claims and their equivalents.

[0029] like Figure 1-8 As 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 blanking pipe 6, a dust removal chamber 7, a feeding conveyor belt 8, a blanking conveyor belt 9, a dust collection hood 10 in the dust removal chamber, a dust collection hood 11, an upper dust removal duct 12, an air curtain 13, a fan 14, an air duct 15, a lower dust removal duct 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 collection hood baffle 26, a dust removal chamber baffle 27, a groove 28, a groove 29, and an annular protrusion 30.

[0030] In view of the fact that dust easily accumulates 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 blocking the dust in the sealed cavity and reducing the pollution of 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 and 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 with the same width as the grooves. The height of the sealing ring 20 is always guaranteed to 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 always keeps it in a compressed state; an annular groove 28 is provided 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 oscillation 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 by the spring 21 in the compressed state in the groove 28 of the lower plate; 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 base gap. 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.

[0031] A square cylindrical funnel-shaped dust collecting cover 11 of comparable size is fixed by a bracket just above the square crusher feeding hopper 2. Two air curtains 13 are provided on the edge of the dust collecting cover 11 close to the feeding conveyor belt 8. Three steel dust collecting cover baffles 26 are welded on the other three side edges. The lower edge of the dust collecting cover 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 width of the edge of the dust collecting cover 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 collecting covers The cover 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 air 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 pipe 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 air curtain 13, and the dust generated in the space below the dust hood 11 is sucked by the negative pressure.

[0032] 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 larger dust splashes. A rectangular dust removal chamber 7 is provided 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 it. 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 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 part of the blanking conveyor belt 9 without affecting the normal transportation of the ore; a small dust removal chamber dust collection cover 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 collection covers 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.

[0033] The present invention is designed with a PLC dust removal monitoring system. Pressure sensors are respectively arranged under 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 discharge port are in a negative pressure state for a long time, and 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 suction working mode.

[0034] It will be apparent 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 invention can be embodied in other specific forms without departing from the spirit or essential characteristics of the invention. Therefore, the embodiments should be considered in all respects as illustrative and non-limiting, and the scope of the invention is defined by the appended claims rather than the foregoing description. It is intended that all variations within the meaning and range of equivalents of the claims be embraced herein, and any reference signs in the claims should not be construed as limiting the claims to which they relate.

[0035] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Any minor modifications, equivalent replacements, and improvements made to the above embodiments based on the technical essence of the present invention shall be included in the scope of protection of the technical solution of the present invention.

Claims

1. A dust removal system for a cone crusher, comprising a crusher body (1), a feeding hopper (2), a gas-liquid entrainment dust collector (3), a concrete foundation (5), a material discharge pipe (6), a feeding conveyor belt (8), and a material discharge conveyor belt (9), characterized in that: The utility model also includes a sealing device (4), a dust collecting cover (11), an upper dust collecting pipe (12), a fan (14), and an air duct (15). 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 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. The four grooves are provided with sealing rings (20) with the same width as the grooves. The height of the sealing 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 inner wall of the upper part of the lower plate (22). The depth of the groove (28) is the sum of the convex edge of the upper plate and the oscillation 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), which 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 the 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: The utility model further 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 both side edges parallel to the forward direction of the blanking conveyor belt (9), rubber curtains (25) are arranged on both side edges perpendicular to the forward direction of the blanking conveyor belt (9), dust collection hoods (10) are respectively arranged on the top of the dust removal chamber (7) on both sides of the blanking pipe (6), and the dust collection hoods (10) are connected to the gas-liquid entrainment dust collector (3) through the lower dust removal pipe (16).

3. The dust removal system of a cone crusher according to claim 2, characterized in that: The dust collecting hood (11) includes a dust collecting hood baffle (26) and an air curtain (13). The air curtain (13) is provided on one edge of the dust collecting hood (11) close to the feeding conveyor belt (8), and dust collecting hood baffles (26) are provided on the other three side edges. The lower edge of the dust collecting 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 width of the edge 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 air duct (15) is connected to the gas-liquid entrainment dust collector (3), and the suction force of the gas-liquid entrainment dust collector (3) is used to form a negative pressure in the sealing device (4), and the dust is sucked into the gas-liquid entrainment dust collector (3) for treatment.

8. A dust removal system for a 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 the sensors.

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