Air knife sweeper

Abstract

The utility model relates to an air knife sweeper which comprises a collecting bin and an air knife, the collecting bin is located below a return belt of a belt conveyor, the air knife is arranged in the collecting bin, an air outlet of the air knife faces the return belt, and the extending direction of the air outlet is parallel to the width direction of the return belt. An air outlet is formed in the air knife, an air storage cavity is formed in the air knife, an air guide channel is communicated between the air storage cavity and the air outlet, an air inlet communicated with the air storage cavity is further formed in the air knife, and the air inlet is not right opposite to the air outlet. A small amount of coal slime is easy to remain at the uneven part of the belt, and the cleaning effect is poor.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of belt conveyer, concretely relates to a wind knife sweeper. BACKGROUND

[0002] The sweeper is the necessary equipment of the coal mine belt conveyer, is mainly used in the head and tail of the belt conveyer, and is used for cleaning the return material adhered to the return belt. The prior art CN203392417U discloses a coal mine underground belt conveyer coal cleaning device, which comprises a connecting frame, a plurality of groups of rollers are fixedly connected to the connecting frame, each group of rollers has two rollers, and the two rollers are arranged in an upper and lower staggered mode on the connecting frame; adjusting bolts for adjusting the relative height of each group of rollers are arranged on the rollers; the position of the adjusting bolt and the roller is adjusted, the roller is fixed at a suitable position, the belt passes through the upper and lower surfaces of the plurality of rollers, and the coal slime on the belt can be removed; however, since the belt and the roller are in surface contact, the coal cleaning device and the belt are easily abraded when cleaning the blocky material, and a small amount of coal slime is easily left on the uneven belt, and the cleaning effect is poor. SUMMARY

[0003] In view of various defects of the prior art, the wind knife sweeper is provided to solve the technical problems that the coal cleaning device and the belt are easily abraded due to surface contact, a small amount of coal slime is easily left on the uneven belt, and the cleaning effect is poor.

[0004] To achieve the above object, the utility model provides the following technical scheme:

[0005] A wind knife sweeper comprises a collecting bin and a wind knife, the collecting bin is located below the return belt of the belt conveyor, the wind knife is arranged in the collecting bin, the air outlet of the wind knife faces the return belt, and the extension direction of the air outlet is parallel to the width direction of the return belt.

[0006] The wind knife is internally provided with a wind storage cavity, a wind guide channel is in communication between the wind storage cavity and the air outlet, the wind knife is further provided with an air inlet in communication with the wind storage cavity, and the air inlet is not arranged opposite to the air outlet.

[0007] The technical scheme is further provided as follows: the longitudinal section of the wind guide channel is in a conical structure, the longitudinal section of the wind storage cavity is in a semicircular structure, the cross-sectional area of the wind guide channel gradually decreases from the wind storage cavity to the air outlet, and the maximum cross-sectional area of the wind guide channel is smaller than the maximum cross-sectional area of the wind storage cavity.

[0008] The technical scheme is further provided as follows: the collecting bin is internally provided with a main air pipe, the main air pipe is connected with the air inlet through a branch air pipe, and the branch air pipe is provided with an adjusting valve.

[0009] The wind knives are arranged at intervals along the running direction of the belt conveyor, and the wind knives are independent of each other.

[0010] The end of the wind knife is provided with a mounting block, the inner wall of the collecting bin is provided with a mounting seat, and the mounting seat is detachably connected with the mounting block.

[0011] The mounting seat is provided with a mounting groove for accommodating the mounting block, mounting holes are arranged on the bottom surface of the mounting groove and the mounting block, connecting pieces are arranged in the mounting holes, and the mounting holes are arranged at a plurality of positions around the same circumference.

[0012] The collecting bin is provided with a baffle at the top, and the baffle is arranged in an arc shape and is curved towards the inside of the collecting bin.

[0013] The bottom surface of the collecting bin is arranged in a conical structure, and the bottom of the conical structure is provided with a collecting opening.

[0014] The beneficial effects of the present application are as follows:

[0015] The compressed air is further compressed and shaped into a linear high-pressure airflow belt by the wind knife, and no matter whether the surface of the return belt is flat or not, the high-pressure airflow belt is in seamless contact with the surface of the return belt, so that the return excess material can be completely removed and the cleaning effect is improved; the wind knife does not actually contact the return belt, so that wear can be avoided; and the blown return excess material is collected and discharged by the collecting bin. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 is a schematic view of the wind knife cleaner in the embodiment of the present application;

[0017] Figure 2 is a schematic view of the wind knife in the embodiment of the present application;

[0018] Figure 3 is a schematic view of the wind knife in the embodiment of the present application;

[0019] Figure 4 is a top view of the mounting seat in the embodiment of the present application.

[0020] In the drawings: 1, collecting bin; 2, wind knife; 3, return belt; 4, main air pipe; 5, branch air pipe; 6, mounting seat; 7, baffle; 8, clamp; 9, stand; 10, air outlet; 11, mounting block; 12, through hole; 13, mounting groove; 14, blind hole; 15, air inlet; 16, air storage cavity; 17, air guide channel. DETAILED DESCRIPTION

[0021] In order to make the technical scheme of the present application better understood by those skilled in the art, the technical scheme of the present application will be described clearly and completely below in conjunction with the drawings of the present application. Based on the embodiments in the present application, other similar embodiments obtained by those skilled in the art without making creative efforts should belong to the scope of protection of the present application. In addition, the directional words mentioned in the following embodiments, such as "up", "down", "left", "right", etc. are only the directions of the drawings, therefore, the directional words used are used for illustration and not for limiting the present application.

[0022] The present application will be further described below in conjunction with the drawings and preferred embodiments.

[0023] According to the present application, a kind of wind knife sweeper is provided, please refer to Figures 1 to 4 , including collection warehouse 1 and wind knife 2, the collection warehouse 1 is located below the return belt 3 of belt conveyor, the wind knife 2 is set in the collection warehouse 1, the air outlet 10 of the wind knife 2 is towards the return belt 3, and the extension direction of air outlet 10 is parallel to the width direction of return belt 3;

[0024] The wind knife 2 is internally provided with a wind storage chamber 16, a wind guide channel 17 is communicated between the wind storage chamber 16 and the air outlet 10, and a wind inlet 15 is further provided on the wind knife 2 and communicated with the wind storage chamber 16.

[0025] It should be noted that the compressed air is further compressed and shaped into a linear high-pressure airflow zone by the wind knife 2, whether the surface of the return belt 3 is smooth or not, the high-pressure airflow zone is in seamless contact with the surface of the return belt 3, and the return excess material can be completely removed to improve the cleaning effect; the wind knife 2 does not actually contact the return belt 3, which can avoid wear and tear; the blown return excess material is collected and discharged by the collection warehouse 1.

[0026] Specifically, the wind inlet 15 is located on the side of the wind storage chamber 16, and the air outlet 10 is located above the wind storage chamber 16, the wind inlet 15 and the air outlet 10 are arranged in a staggered manner (not directly opposite), to avoid the compressed air entering through the wind inlet 15 being directly discharged through the air outlet 10, which affects the airflow velocity at the air outlet 10, and improves the cleaning effect.

[0027] In the wind knife sweeper of the present embodiment, please refer to Figures 1 to 4 , the longitudinal section of the wind guide channel 17 is arranged in a tapered structure, the longitudinal section of the wind storage chamber 16 is arranged in a semicircular structure, from the wind storage chamber 16 to the air outlet 10, the cross-sectional area of the wind guide channel 17 gradually decreases, and the maximum cross-sectional area of the wind guide channel 17 is less than the maximum cross-sectional area of the wind storage chamber 16.

[0028] It needs to be explained that the compressed air entering through the air inlet 15 is stored and gathered in the air storage cavity 16, the longitudinal section of the air guide channel 17 is designed as a tapered structure, and in the process of the compressed air flowing through the air guide channel 17 to the air outlet 10, the compressed air is gradually compressed, and finally forms a linear high-pressure air flow belt through the air outlet 10.

[0029] In the air knife cleaner of the embodiment, as shown in Figures 1 to 4 , the main air pipe 4 is arranged inside the collection bin 1, the main air pipe 4 is connected with the air inlet 15 through the branch air pipe 5, and the branch air pipe 5 is provided with an adjusting valve.

[0030] It needs to be explained that the end of the main air pipe 4 is fixedly connected with the inner wall of the collection bin 1, and meanwhile, one end of the main air pipe 4 extends to the outside of the collection bin 1 and is connected with the air source, the compressed air enters the air inlet 15 through the main air pipe 4 and the branch air pipe 5, and the air volume entering the air knife 2 can be flexibly adjusted by means of the adjusting valve.

[0031] In the air knife cleaner of the embodiment, as shown in Figures 1 to 4 , along the running direction of the belt conveyor, the air knives 2 are arranged at intervals, and the air knives 2 are independent of each other.

[0032] It needs to be explained that the return belt 3 is thoroughly cleaned by the multiple linear high-pressure air flow belts, and the return residues after cleaning are collected and discharged through the collection bin 1; meanwhile, according to actual needs, the air volume of each air knife 2 can be individually set.

[0033] In the air knife cleaner of the embodiment, as shown in Figures 1 to 4 , the end of the air knife 2 is provided with a mounting block 11, the inner wall of the collection bin 1 is provided with a mounting seat 6, and the mounting seat 6 is detachably connected with the mounting block 11.

[0034] Specifically, the mounting seat 6 is provided with a mounting groove 13 for accommodating the mounting block 11, the bottom surface of the mounting groove 13 and the mounting block 11 are both provided with mounting holes, the mounting holes are provided with connecting pieces, and the mounting holes are arranged at a plurality of positions around the same circumference.

[0035] It needs to be explained that the mounting block 11 is matched with the mounting groove 13 in shape, and the mounting block 11 is limited by the mounting groove 13, for example, the longitudinal section of the mounting block 11 is circular, and correspondingly, the mounting groove 13 is also designed as a circular groove; the mounting hole on the mounting block 11 is a through hole 12, the mounting hole on the bottom surface of the mounting groove 13 is a blind hole 14, the connecting pieces are threadedly connected with the through hole 12 and the blind hole 14 respectively, and the ends of the connecting pieces are sunk into the blind hole 14.

[0036] After the connecting piece is disassembled, the air knife 2 is rotated, the angle of the air outlet 10 can be changed, the cleaning requirement of the return belt 3 is adapted, the cleaning effect is improved, and then the connecting piece is installed.

[0037] In the wind knife cleaner of the embodiment, referring to Figures 1 to 4 , the top of the collecting bin 1 is provided with a baffle 7, and the baffle 7 is arranged in an arc-shaped structure which is curved towards the inside of the collecting bin 1.

[0038] It should be noted that a gap is left between the top of the baffle 7 and the return belt 3 to avoid abrasion caused by contact; the arc-shaped baffle 7 can intercept the blown return residues to prevent the return residues from drifting to the outside of the collecting bin 1 and causing pollution.

[0039] In the wind knife cleaner of the embodiment, referring to Figures 1 to 4 , the bottom surface of the collecting bin 1 is arranged in a conical structure, and the bottom of the conical structure is provided with a collecting opening, so as to facilitate the collection and discharge of the blown return residues. The collecting bin 1 is installed on the stand column 9 through a clamp 8, after the clamp 8 is loosened, the height of the collecting bin 1 can be adjusted along the stand column 9, and then the clamp 8 is tightened for fixation.

[0040] The above has made a detailed description of the utility model, the above is only a preferred embodiment of the utility model, and cannot limit the utility model implementation range, that is, all equivalent changes and modifications made according to the application range should still belong to the utility model coverage.

Claims

1. A pneumatic knife cleaner, characterized in that, It includes a collection bin and an air knife. The collection bin is located below the return belt of the belt conveyor. The air knife is installed inside the collection bin. The air outlet of the air knife faces the return belt, and the extension direction of the air outlet is parallel to the width direction of the return belt. The air knife has an air storage chamber inside, and an air guide channel connects the air storage chamber to the air outlet. The air knife also has an air inlet that connects to the air storage chamber, but the air inlet is not directly opposite the air outlet.

2. The air knife cleaner according to claim 1, characterized in that, The longitudinal section of the air guide channel is set as a conical structure, and the longitudinal section of the air storage cavity is set as a semi-circular structure. From the air storage cavity to the air outlet, the cross-sectional area of ​​the air guide channel gradually decreases, and the maximum cross-sectional area of ​​the air guide channel is less than the maximum cross-sectional area of ​​the air storage cavity.

3. The air knife cleaner according to claim 1 or 2, characterized in that, The collection chamber is equipped with a main air duct, which is connected to the air inlet via branch air ducts. The branch air ducts are equipped with regulating valves.

4. The air knife cleaner according to claim 3, characterized in that, Along the running direction of the belt conveyor, several air knives are arranged at intervals, and the air knives are independent of each other.

5. The air knife cleaner according to claim 1, characterized in that, The air knife is provided with a mounting block at its end, and the inner wall of the collection chamber is provided with a mounting base, which is detachably connected to the mounting block.

6. The air knife cleaner according to claim 5, characterized in that, The mounting base has a mounting groove for accommodating the mounting block. The bottom surface of the mounting groove and the mounting block are provided with mounting holes. A connector is provided in the mounting hole. Several mounting holes are arranged around the same circumference.

7. The air knife cleaner according to claim 1, characterized in that, The top of the collection chamber is equipped with a baffle, which is an arc-shaped structure that curves toward the inside of the collection chamber.

8. The air knife cleaner according to claim 1 or 7, characterized in that, The bottom of the collection chamber is designed as a cone shape, and a collection port is provided at the bottom of the cone shape.

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