Anti-blocking wear-resistant feeding chute

Abstract

The utility model relates to the technical field of vertical mill material feeding, in particular to an anti-blocking wear-resistant feeding chute, which comprises a vertical mill and a material chute arranged on the vertical mill, the material chute comprises a chute bottom plate, two symmetrical chute side plates arranged on the chute bottom plate, and a pneumatic component, the chute bottom plate is installed on the material chute and used for shaking the chute bottom plate, a sealing assembly is arranged on the chute bottom plate, and the pneumatic assembly is installed on the sealing assembly; the exhaust assembly is mounted on the sealing assembly and used for exhausting gas in the sealing assembly; the protection assembly is mounted on the material chute and is used for preventing materials from the vertical mill from falling into the material chute; and the matching assembly is installed in the material chute and used for being matched with the pneumatic assembly for use, and the materials on the bottom plate of the chute can be more quickly disengaged through the use of the matching assembly and the pneumatic assembly.

Description

Technical Field

[0001] The utility model relates to the technical field of vertical mill material feeding, in particular to an anti-blocking and wear-resistant feeding chute. Background Art

[0002] Vertical mill, also known as vertical grinding mill, works on the principle that the motor drives the grinding disc to rotate through a reducer, while hot air enters the vertical mill body from the bottom air inlet. The material falls into the center of the grinding disc through the feed chute from the feed port. Under the action of centrifugal force, the material moves evenly from the center of the grinding disc to the edge. When passing through the grinding roller area on the grinding disc, it is crushed by the grinding roller. Large pieces of material are directly crushed, and fine particles are squeezed to form a material bed for inter-particle crushing. The crushed material continues to move toward the edge of the grinding disc until it is carried away by the strong airflow at the wind ring. Large particles fall back onto the grinding disc and continue to be crushed. When the material in the airflow passes through the upper separator, the rotor rotates at high speed, the rotor blades collide with the particles, and give the material a higher circumferential speed, generating a larger centrifugal force, which separates large and small particles. Fine particles can pass through the rotor and be collected by the dust collector, while large particles fall onto the grinding disc for further grinding.

[0003] Traditional feed chutes are U-shaped, with no top cover and a flat bottom. The chute's inclination guides the material from the feed inlet through the chute into the mill. For non-sticky materials, traditional feed chutes are often used due to their simple structure and easy installation, making them the predominant type currently used in vertical mills. However, when the material entering the mill is sticky or has a certain viscosity due to humidity and other reasons, the disadvantages of the traditional feed chute will appear. The first disadvantage is that the material forms an adhesion layer in the chute. When the adhesion layer is in an accumulated state, the amount of material entering the mill becomes less, resulting in a decrease in the mill's grinding efficiency. When the adhesion layer accumulates to a certain extent, it suddenly breaks and falls into the mill. The amount of material entering the mill suddenly increases, exceeding the normal grinding capacity of the mill itself, causing a large amount of unground material to circulate repeatedly in the mill, thereby reducing the stability of the mill. In a short period of time, the mill will produce abnormal noise due to overload operation, and at the same time, it will aggravate the wear of the inner wall of the mill and reduce the service life of related parts. The second disadvantage is even worse. The material adhesion layer will accumulate more and more at the feed inlet, blocking the feed inlet, causing the material to accumulate at the feed inlet and above in a short period of time, forcing the production system to shut down. In severe cases, it will also cause damage to the feeding equipment and other equipment at the front end of the feed inlet. Once blockage occurs, it will consume a lot of manpower and material resources, and the overall production efficiency will be seriously affected. At the same time, the bottom plate of this chute is in direct contact and friction with the material, and does not have good wear resistance (compared with the same bottom plate material), and the service life of the chute is short.

[0004] At this moment, just utility model has invented a new device to solve above-mentioned problem. Utility Model Content

[0005] In order to solve the above technical problems, the utility model provides an anti-blocking and wear-resistant feeding chute.

[0006] The utility model provides an anti-blocking and wear-resistant feed chute, comprising: a vertical mill and a material chute installed on the vertical mill, the material chute comprising a chute bottom plate, two symmetrical chute side plates installed on the chute bottom plate, a pneumatic component, which is installed on the material chute and used to shake the chute bottom plate, a closing component is provided on the chute bottom plate, the pneumatic component is installed on the closing component; an exhaust component, which is installed on the closing component and used to discharge the gas in the closing component; a protective component, which is installed on the material chute and used to prevent the material from the vertical mill from falling into the material chute; a matching component, which is installed in the material chute and used to cooperate with the pneumatic component, and the use of the matching component and the pneumatic component can make the material on the chute bottom plate fall off more quickly.

[0007] Preferably, the closing component includes two symmetrical baffles installed on the chute bottom plate and a bottom plate installed on the baffle plate. The chute bottom plate, the baffle plate and the bottom plate form an inflation space. One end of the inflation space is sealed by a connecting flange, and a closing plate is installed on the other end of the inflation space. The closing plate is installed on the baffle plate or the bottom plate or the material chute by bolts. The pneumatic component includes an air intake pipe arranged on the baffle plate or the bottom plate, a pulse valve is provided at the other end of the air intake pipe, an air cannon is provided on the pulse valve, and a branch one-way valve is provided at the other end of the air cannon. The exhaust component is a first exhaust hole opened on the baffle plate and a second exhaust hole opened on the closing plate.

[0008] Preferably, the protective assembly includes a top plate installed on the chute side plate and an inspection cover installed on the top plate. There is at least one top plate and it is inserted into the chute side plate. The inspection cover is fixed to the top plate by bolts. A handle is provided on the top plate, and there is at least one handle.

[0009] Preferably, the mating component is a vertical plate installed on the chute side plate, there is at least one vertical plate and they are arranged at intervals on the inner wall of the chute side plate, the vertical plate is close to the chute bottom plate, and the distance between the vertical plate and the chute bottom plate is the material collision space.

[0010] Preferably, the material chute is provided with an inner chute flange and an outer chute flange fixed to the vertical mill.

[0011] Compared with the related art, the anti-blocking and wear-resistant feeding chute provided by the present invention has the following beneficial effects: the chute bottom plate can be periodically impacted by the air intake pipe and the external device, and the chute bottom plate will vibrate at this time, which will destroy the sticky material on the chute bottom plate, thereby helping the material to enter the vertical mill smoothly. At the same time, taking advantage of the fact that sticky materials are easy to stick together, vertical plates are provided on the chute side plates, and the material is easy to form a material layer between the chute bottom plate and the vertical plates. Most of the material falls into the machine body through the material layer and does not directly contact the chute bottom plate. This method will form material on the vertical plates. The material will resist the material on the chute bottom plate. As long as the chute bottom plate vibrates, it will form a material-to-material confrontation. When there is no vibration, the vertical plate can also bear part of the pressure, which also reduces the pressure on the chute bottom plate and improves the wear resistance and service life of the chute bottom plate. The impact on the chute bottom plate at a certain frequency will vibrate the chute bottom plate, and the material will not easily form a material layer due to the vertical plate, which will lead to accumulation and blockage. The combination of the two can also play an anti-wear effect. At the same time, there is a certain distance between the vertical plate and the chute bottom plate, so that when the chute bottom plate vibrates and deforms, the vertical plate will not be deformed.

[0012] The above-described use impacts the chute bottom plate through the vertical plate and the air inlet pipe, causing the chute bottom plate to shake, thereby vibrating off the sticky materials attached to the chute bottom plate. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 This is a schematic diagram of the original material chute structure;

[0014] Figure 2 A three-dimensional diagram of the present invention Figure 1 ;

[0015] Figure 3 A three-dimensional diagram of the present invention Figure 2 ;

[0016] Figure 4 It is a side view of the utility model;

[0017] Figure 5 It is a side sectional view of the utility model;

[0018] Figure 6 It is a top view of the utility model;

[0019] Figure 7 This is a schematic diagram of the top plate structure of the present utility model;

[0020] Figure 8 This is a schematic diagram of the closing plate structure of the utility model;

[0021] Figure 9 This is the airflow process flow chart of the utility model.

[0022] Numbers in the figure:

[0023] 1. Chute side panel; 2. Inspection cover; 3. Handle; 4. Vertical panel; 5. First exhaust hole; 6. Chute bottom plate;

[0024] 7. Bottom plate; 8. Air inlet pipe; 9. Closing plate; 10. Top plate; 11. Chute outer flange; 12. Chute inner flange;

[0025] 13. Second exhaust hole; 14. Branch one-way valve; 15. Air cannon; 16. Pulse valve. DETAILED DESCRIPTION

[0026] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0027] The specific implementation of the present invention is described in detail below with reference to specific embodiments.

[0028] See also Figures 1 to 9 The embodiment of the present invention provides an anti-blocking and wear-resistant feed chute, comprising: a vertical mill and a material chute installed on the vertical mill, the material chute comprising a chute bottom plate 6, two symmetrical chute side plates 1 installed on the chute bottom plate 6, a pneumatic component, which is installed on the material chute and used to shake the chute bottom plate 6, a closing component is provided on the chute bottom plate 6, and a pneumatic component is installed on the closing component; an exhaust component is installed on the closing component and used to discharge the gas in the closing component; a protective component is installed on the material chute and used to prevent the material from the vertical mill from falling into the material chute; a matching component is installed in the material chute and used to cooperate with the pneumatic component. The use of the matching component and the pneumatic component can make the material on the chute bottom plate 6 fall off faster.

[0029] In this embodiment, the chute bottom plate 6 can be impacted periodically through the air intake pipe 8 and the external device. At this time, the chute bottom plate 6 will vibrate, which will destroy the sticky material on the chute bottom plate 6, thereby helping the material to enter the vertical mill smoothly. At the same time, taking advantage of the fact that sticky materials are easy to adhere, a vertical plate 4 is provided on the chute side plate 1. The material is easy to form a material layer between the chute bottom plate 6 and the vertical plate 4. Most of the material falls into the machine body through the material layer and does not directly contact the chute bottom plate 6. In this way, the material on the vertical plate 4 will form a confrontation with the material on the chute bottom plate 6. As long as the chute bottom plate 6 vibrates, it will form a material-to-material confrontation. When no vibration is performed, the vertical plate 4 can also To withstand part of the pressure, this also reduces the pressure on the chute bottom plate 6, improves the wear resistance and service life of the chute bottom plate 6, and impacts the chute bottom plate 6 at a certain frequency, causing vibration to the chute bottom plate 6, and prevents the material from easily forming a material layer due to the vertical plate 4, thereby causing accumulation and blockage. The combination of the two can simultaneously play an anti-wear effect. At the same time, there is a certain distance between the vertical plate 4 and the chute bottom plate 6, so that when the chute bottom plate 6 vibrates and deforms, the vertical plate 4 will not be deformed. The above-described use, through the vertical plate 4 and the air inlet pipe 8, impacts the chute bottom plate 6, and the chute bottom plate 6 will shake, so that the sticky material attached to the chute bottom plate 6 can be vibrated off.

[0030] The closing component includes two symmetrical baffles installed on the chute bottom plate 6 and a bottom plate 7 installed on the baffle. The chute bottom plate 6, the baffle and the bottom plate 7 form an inflation space. One end of the inflation space is sealed by a connecting flange. A closing plate 9 is installed at the other end of the inflation space. The closing plate 9 is installed on the baffle or the bottom plate 7 or the material chute by bolts. The pneumatic component includes an air intake pipe 8 arranged on the baffle or the bottom plate 7, a pulse valve 16 is provided at the other end of the air intake pipe 8, an air cannon 15 is provided on the pulse valve 16, and a branch one-way valve 14 is provided at the other end of the air cannon 15. The exhaust component is a first exhaust hole 5 opened on the baffle and a second exhaust hole 13 opened on the closing plate 9.

[0031] In this embodiment, the reason for adopting the design of the air release hole is that when the compressed gas comes into the inflation space, in order to achieve a better impact vibration effect on the chute bottom plate 6, the air release hole is slowly released. At this time, the chute bottom plate 6 can be impacted instantly, which can achieve a better vibration effect of the entire chute bottom plate 6 than the design of the opening.

[0032] Subsequent designs can design the air intake pipe 8 to be at different angles, so that different impact effects can be achieved.

[0033] The protective assembly includes a top plate 10 installed on the chute side plate 1 and an inspection cover 2 installed on the top plate 10. There is at least one top plate 10 and it is inserted into the chute side plate 1. The inspection cover 2 is fixed to the top plate 10 by bolts. A handle 3 is provided on the top plate 10, and there is at least one handle 3.

[0034] In this embodiment, in order to prevent materials that have not been selected by the vertical mill from falling from the top and entering the device, thereby reducing the overall internal volume, a top plate 10 and an inspection cover 2 are installed on the chute side plate 1. The inspection cover 2 is installed in a detachable manner, which can effectively achieve convenient and quick disassembly and assembly, saving time and effort.

[0035] The mating component is a vertical plate 4 installed on the chute side plate 1. There is at least one vertical plate 4 and they are arranged at intervals on the inner wall of the chute side plate 1. The vertical plate 4 is close to the chute bottom plate 6, and the distance between the vertical plate 4 and the chute bottom plate 6 is the material collision space.

[0036] In this embodiment, a vertical plate 4 is provided on the chute side plate 1, and the material easily forms a material layer between the chute bottom plate 6 and the vertical plate 4. Most of the material falls into the machine body through the material layer and does not directly contact the chute bottom plate 6. In this way, the material on the vertical plate 4 and the material on the chute bottom plate 6 will form a confrontation. As long as the chute bottom plate 6 vibrates, the material will resist the material. When there is no vibration, the vertical plate 4 can also withstand part of the pressure, which also reduces the pressure on the chute bottom plate 6 and improves the wear resistance and service life of the chute bottom plate 6.

[0037] At the same time, the vertical plate 4 cannot be fixed to the chute bottom plate 6, which increases the rigidity of the chute bottom plate 6 and makes the elastic deformation and impact vibration effects of the chute bottom plate 6 worse.

[0038] The material chute is provided with an inner chute flange 12 and an outer chute flange 11 fixed to the vertical mill.

[0039] In this embodiment, the design of the inner flange 12 and the outer flange 11 of the chute can effectively fix the entire material chute on the vertical mill. The two designs are more stable than a single design, avoiding the problem of the entire material chute falling off due to loose installation when impacting the chute bottom plate 6.

[0040] The specific usage of this device is that the qualified compressed air source generated by the air source device of the external system passes through the branch one-way valve 14, and the branch one-way valve 14 stores a certain amount of compressed gas into the air cannon 15. The air cannon 15 is equipped with a pulse valve 16, and the pulse valve 16 is connected to the air inlet pipe 8. The branch one-way valve 14 only allows gas to flow in one direction, which can prevent gas backflow or mixing, and can effectively ensure the stability of the gas pressure in the air cannon 15; the air cannon 15 is also called an air flow aid, and its body can store a certain amount of compressed gas. Due to the gas pressure difference, it can be used in conjunction with the pulse valve 16 to suddenly eject a strong compressed air flow, and the high pressure and high speed can generate a strong impact force; the pulse valve 16 is a diaphragm valve that can instantly open and close the high-pressure air source to generate pulses. The on and off of the pulse valve 16 can be controlled by a program. The pulse valve 16 is close to the air inlet pipe 8, so that the impact effect is better.

[0041] It is specially noted again that most of the supporting production systems of vertical mills are equipped with air source devices. In most cases, this solution only requires the addition of branch one-way valves 14, air cannons 15, pulse valves 16 and branch pipelines. The economic cost of this part is negligible compared to the vertical mill equipment itself. Therefore, this solution meets the economic requirements in most cases.

[0042] In this way, the chute bottom plate 6 can be periodically impacted through the air intake pipe 8 and the external device, and the chute bottom plate 6 will vibrate at this time. At the same time, the design of the vertical plate 4 can achieve the effect of material resisting material. The vertical plate 4 and the air intake pipe 8 impact the chute bottom plate 6, and the chute bottom plate 6 will shake, so that the sticky material attached to the chute bottom plate 6 can be vibrated off.

[0043] The above are merely embodiments of the present invention and are not intended to limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made using the contents of the present invention specification and drawings, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A blockage-proof and wear-resistant feed chute, comprising: A vertical mill and a material chute mounted on the vertical mill, wherein the material chute comprises a chute bottom plate (6) and two symmetrical chute side plates (1) mounted on the chute bottom plate (6), and is characterized in that: A pneumatic assembly is mounted on the material chute and is used to cause the chute bottom plate (6) to shake. A closing assembly is provided on the chute bottom plate (6), and the pneumatic assembly is mounted on the closing assembly; An exhaust assembly, which is mounted on the closed assembly and is used to discharge the gas in the closed assembly; A protective assembly, which is installed on the material chute and is used to prevent the material from the vertical mill from falling into the material chute; A matching component is installed in the material chute and is used in conjunction with the pneumatic component. The use of the matching component and the pneumatic component can more quickly remove the material on the chute bottom plate (6).

2. The anti-blocking and wear-resistant feed chute according to claim 1, characterized in that: The closing assembly comprises two symmetrical shielding plates mounted on a chute bottom plate (6) and a bottom plate (7) mounted on the shielding plates. The chute bottom plate (6), the shielding plates and the bottom plate (7) form an inflation space. One end of the inflation space is sealed by a connecting flange. A closing plate (9) is mounted on the other end of the inflation space. The closing plate (9) is mounted on the shielding plates or the bottom plate (7) or the material chute by bolts.

3. The anti-blocking and wear-resistant feed chute according to claim 2, characterized in that: The pneumatic assembly comprises an air intake pipe (8) arranged on a shielding plate or a bottom plate (7), a pulse valve (16) being arranged at the other end of the air intake pipe (8), an air cannon (15) being arranged on the pulse valve (16), and a branch one-way valve (14) being arranged at the other end of the air cannon (15).

4. The anti-blocking and wear-resistant feed chute according to claim 3, characterized in that: The exhaust assembly comprises a first exhaust hole (5) provided on the shielding plate and a second exhaust hole (13) provided on the closing plate (9).

5. The anti-blocking and wear-resistant feed chute according to claim 1, characterized in that: The protective assembly comprises a top plate (10) mounted on the chute side plate (1) and an inspection cover (2) mounted on the top plate (10), wherein the top plate (10) is at least one and is plugged into the chute side plate (1), and the inspection cover (2) is fixed to the top plate (10) by bolts.

6. The anti-blocking and wear-resistant feed chute according to claim 5, characterized in that: A handle (3) is provided on the top plate (10), and there is at least one handle (3).

7. The anti-blocking and wear-resistant feed chute according to any one of claims 1 to 3, characterized in that: The matching component is a vertical plate (4) mounted on the chute side plate (1), and the number of the vertical plate (4) is at least one and is arranged at intervals on the inner wall of the chute side plate (1).

8. The anti-blocking and wear-resistant feed chute according to claim 7, characterized in that: The vertical plate (4) is close to the chute bottom plate (6), and the distance between the vertical plate (4) and the chute bottom plate (6) is the material collision space.

9. The anti-blocking and wear-resistant feed chute according to claim 1, characterized in that: The material chute is provided with an inner chute flange (12) and an outer chute flange (11) fixed to the vertical mill.

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