Screening device for coal mining

Abstract

The utility model relates to the technical field of screening devices, in particular to a coal mining screening device which comprises an installation frame, a screen frame is arranged on the installation frame, the upper end and the lower end of the screen frame are open, and a screening mechanism is arranged in the screen frame. A detachable treatment cover is arranged at the opening position of the upper end of the screen frame, a treatment cavity is formed in the treatment cover, a dust suction assembly is arranged in the treatment cavity, a spraying assembly is further arranged in the treatment cavity and used for spraying and suppressing dust sucked by the dust suction assembly, a water tank is arranged on the upper side face of the treatment cover, and the interior of the water tank is used for supplying water to the spraying assembly. A circulating assembly is further arranged in the water tank and used for circulating water sprayed out of the spraying assembly into the water tank, and a filtering assembly is further arranged in the water tank. Through the arrangement of the treatment cover, the treatment cover can cover the opening in the upper end of the screen frame, so that when the screening mechanism screens coal briquettes, dust overflowing from the opening in the upper end of the screen frame is reduced, and the influence of the dust on the surrounding environment is reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to screening device technical field, concretely relates to a coal mining screening device. BACKGROUND

[0002] As an important coal production mode in today's coal industry, open-pit coal mine has the advantages of low cost, high efficiency and easy mining, and is widely used. In the process of fully utilizing coal resources, it is necessary to screen them to distinguish different sizes of coal.

[0003] For example, the patent with the announcement number CN213103114U discloses a screening device for coal mine. Although the screening device is provided with a second screen, when the first motor drives the rotating disc and the rotating plate to rotate, the connecting rod pushes the push rod to slide forward and backward in the slide due to the fact that the rotating disc and the rotating plate connecting shaft are not at the center, thereby driving the fixed plate and the second screen to move forward and backward to screen the coal blocks and facilitate the removal of the coal blocks stuck in the first screen. However, in actual use, since the first screen and the second screen are directly exposed to the air, the surface of the coal blocks may have coal dust and other dust, which may cause a large amount of dust to float in the air during the vibration screening of the coal mine, affecting the surrounding atmospheric environment, and thus needs to be improved. SUMMARY

[0004] The utility model aims at providing a coal mining screening device to solve the problems in the background art.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical scheme:

[0006] A coal mining screening device, comprising a mounting frame, a screen frame is arranged on the mounting frame, the screen frame is provided with openings at its upper and lower ends, and a screening mechanism is arranged in the screen frame; a detachable treatment cover is arranged at the opening position of the upper end of the screen frame, a treatment cavity is arranged in the treatment cover, a dust suction assembly is arranged in the treatment cavity, a spraying assembly is further arranged in the treatment cavity, the spraying assembly is used for spraying the dust absorbed by the dust suction assembly to suppress dust, a water tank is arranged on the upper side of the treatment cover, the water tank is used for supplying water to the spraying assembly, a circulating assembly is further arranged in the water tank, the circulating assembly is used for circulating the water sprayed by the spraying assembly to the water tank, and a filtering assembly is further arranged in the water tank to filter the water circulating to the water tank.

[0007] Further, a fixed plate is arranged in the treatment cavity, which divides the treatment cavity into a dust suppression cavity and a dust suction cavity; the dust suction assembly comprises a mounting plate arranged in the dust suction cavity, a plurality of dust suction covers are arranged side by side on the lower side of the mounting plate, and a fan is arranged on the upper side of the mounting plate corresponding to the dust suction covers; a wind pipe is arranged in the dust suction cavity and extends through the fixed plate into the dust suppression cavity, one end of the wind pipe is located in the dust suppression cavity, and a through hole is arranged at the other end of the dust suppression cavity.

[0008] Further, the spraying assembly comprises a plurality of water delivery pipes arranged on the upper side wall of the dust suppression chamber in parallel, the water delivery pipes are arranged along the length direction of the dust suppression chamber, and a plurality of spray heads are arranged on the outer side wall of the water delivery pipes along the axial direction thereof.

[0009] Further, the circulating assembly comprises a connecting pipe arranged on the water tank, the connecting pipe is used for being communicated with the water delivery pipe, and the circulating assembly further comprises a circulating pump arranged in the dust suppression chamber, and the circulating pump is communicated with the water tank through the water suction pipe.

[0010] Further, the filtering assembly comprises a filter element arranged in the water tank, the filter element is used for filtering the spraying water drawn into the water tank, the upper side wall of the water tank is provided with an opening communicated with a filtering chamber, and opposite side walls of the filtering chamber are provided with sliding grooves for sliding the filter element.

[0011] Further, the bottom wall of the dust suppression chamber is provided with an inclined plate along the length direction thereof.

[0012] Further, the upper side surface of the filter element is provided with a handle.

[0013] Compared with the prior art, the present application has the following beneficial effects:

[0014] 1. The present application is provided with the treatment cover, so that the treatment cover can cover the upper end opening position of the sieve frame, and when the screening mechanism screens the coal blocks, the overflow of the dust from the upper end opening of the sieve frame is reduced, thereby reducing the influence on the surrounding environment.

[0015] The present application is provided with the dust suction assembly, so that the dust suction assembly can absorb the dust generated when the coal blocks are screened, and the spraying assembly is provided, so that the spraying assembly can spray and suppress the dust absorbed by the dust suction assembly, thereby preferably reducing the dust in the air after the spraying through the through hole. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 Fig. 1 shows the structure schematic diagram of a coal mining screening device in the embodiment of the present application;

[0017] Figure 2 Fig. 4 shows the structure schematic diagram of the discharge end of the sieve plate in the embodiment of the present application;

[0018] Figure 3 Fig. 5 shows the structure schematic diagram of the sieve plate in the embodiment of the present application;

[0019] Figure 4 Fig. 6 shows the cross-sectional structure schematic diagram of the sieve frame in the embodiment of the present application;

[0020] Figure 5 Fig. 7 shows the cross-sectional structure schematic diagram of the treatment cover in the embodiment of the present application;

[0021] Figure 6 A structure diagram of a pumping member in the embodiment of the application is shown.

[0022] Figure 7 A cross-sectional structure diagram of a water tank in the embodiment of the application is shown.

[0023] The meanings of the numbers in the figure are as follows: 100, mounting rack; 101, screen frame; 102, mounting column; 103, spring; 104, mounting block; 105, mounting part; 106, extension part; 107, processing cover; 108, connecting pipe; 109, through hole; 110, feeding end; 111, pumping pipe; 112, handle; 113, water tank; 114, discharging end;

[0024] 300, screen plate; 301, screen hole;

[0025] 400, vibration motor;

[0026] 500, water delivery pipe; 501, spraying head; 502, air pipe; 503, air fan; 504, dust suction cover; 505, mounting plate; 506, inclined plate; 507, dust suction cavity; 508, fixing plate; 509, dust suppression cavity;

[0027] 600, water inlet cavity; 601, water storage cavity; 602, filter element. DETAILED DESCRIPTION

[0028] For further understanding of the content of the present application, the present application is described in detail in combination with the drawings and embodiments. It should be understood that the embodiments are merely used to explain the present application but not to limit the present application.

[0029] The following is described in combination with the drawings Figures 1-7 The embodiment is described in further detail.

[0030] The following is described in combination with the drawings Figures 1-7 As shown in the drawings, the coal mining screening device in the embodiment comprises a mounting rack 100, the mounting rack 100 is provided with a screen frame 101, the screen frame 101 is provided with openings at the upper and lower ends, and a screening mechanism is arranged in the screen frame 101; a detachable processing cover 107 is arranged at the opening position of the upper end of the screen frame 101, a processing cavity is arranged in the processing cover 107, a dust suction assembly is arranged in the processing cavity, a spraying assembly is further arranged in the processing cavity, the spraying assembly is used for spraying dust absorbed by the dust suction assembly to suppress dust, a water tank 113 is arranged on the upper side of the processing cover 107, the water tank 113 is used for supplying water to the spraying assembly, a circulating assembly is further arranged in the water tank 113, the circulating assembly is used for circulating water sprayed by the spraying assembly into the water tank 113, and a filtering assembly for filtering water circulating into the water tank 113 is further arranged in the water tank 113.

[0031] The upper side of the mounting frame 100 is provided with a plurality of mounting columns 102, the mounting columns 102 are sleeved with springs 103, the opposite side walls of the screen frame 101 are provided with mounting blocks 104, and the mounting columns 102 penetrate through the mounting blocks 102; the screening mechanism comprises a screen plate 300 arranged in the screen frame 101, the screen plate 300 is obliquely arranged in the screen frame 101, the high end of the screen plate 300 extends out of the screen frame 101 to form an inlet end 110, the low end of the screen plate 300 extends out of the screen frame 101 to form an outlet end 114, and the lower side of the screen plate 300 is provided with a vibration motor 400.

[0032] In actual use, a plurality of screen holes 301 are uniformly arranged on the screen plate 300, the coal blocks are added into the screen frame 101 from the inlet end 110, the vibration motor 400 is arranged to drive the screen plate 300 to vibrate, so that the coal blocks on the screen plate 300 can be vibrated, the coal blocks with a particle size smaller than the diameter of the screen hole 301 can fall through the lower end opening of the screen frame 101 and be collected when the coal blocks move along the screen plate 300, and the coal blocks with a particle size greater than the diameter of the screen hole 301 can slide along the inclination angle of the screen plate 300 to the outlet end 114 and be collected through vibration, so that the screening of coal blocks of different sizes is completed.

[0033] In actual use, the upper end of the spring 103 abuts against the lower side of the mounting block 104, and the lower end of the spring 103 abuts against the upper side of the mounting frame 100, so that the screen frame 101 can drive the mounting block 104 to vibrate when the vibration motor 400 vibrates, and the mounting block 104 can drive the spring 103 to vibrate, and the screen plate 300 can be better vibrated through the elasticity of the spring 103.

[0034] In the embodiment, the opposite upper end openings of the screen frame 101 extend outward to form extension portions 106, the opposite lower sides of the processing cover 107 extend outward to form mounting portions 105, and the mounting portions 105 are fixed to the extension portions 106 through bolts, so that the processing cover 107 can be detachably mounted on the screen frame 101.

[0035] The processing cover 107 is arranged to cover the upper end opening position of the screen frame 101, so that the screening mechanism can better reduce the overflow of dust from the upper end opening of the screen frame 101 when the coal blocks are vibrated and screened, and the influence on the surrounding environment is reduced.

[0036] In actual use, the dust suction assembly is arranged to suck the dust generated in the screening of the coal blocks into the processing cavity, and the spraying assembly is arranged to spray the dust sucked into the processing cavity by the dust suction assembly, so that the dust in the processing cavity is treated.

[0037] The water tank 113, the circulating assembly and the filtering assembly are arranged so that the water tank 113 can supply water to the spraying assembly, the sprayed water can be pumped into the water tank 113 again through the circulating assembly, and the water can be supplied to the spraying assembly again after being filtered by the filtering assembly, thereby realizing the recycling of the sprayed water.

[0038] In combination with Figure 5 As shown in the drawings, in the embodiment, the processing cavity is provided with a fixed plate 508, and the fixed plate 508 divides the processing cavity into a dust suppression cavity 509 and a dust suction cavity 507; the dust suction assembly includes a mounting plate 505 arranged in the dust suction cavity 507, and a plurality of dust suction covers 504 are arranged side by side on the lower side of the mounting plate 505; and a fan 503 is arranged on the upper side of the mounting plate 505 and corresponds to the dust suction cover 504; the dust suction cavity 507 is provided with a wind pipe 502 penetrating through the fixed plate 508 and extending into the dust suppression cavity 509, and the wind pipe 502 is located at one end of the dust suppression cavity 509, and the other end of the dust suppression cavity 509 is provided with a through hole 109.

[0039] In actual use, the dust suppression cavity 509 is located above the fixed plate 508, and the dust suction cavity 507 is located below the fixed plate 508; the dust suction cover 504 is fixedly installed on the lower side of the mounting plate 505 by screws; and the fan 503 can suck the dust generated during the screening of the coal blocks into the dust suction cavity 507 through the dust suction cover 504, the fan 503 and the wind pipe 502, and the dust in the dust suction cavity 507 can enter the dust suppression cavity 509 through the wind pipe 502.

[0040] In order to avoid that the spraying assembly sprays water into the wind pipe 502, the end of the wind pipe 502 extending into the dust suppression cavity 509 is arranged in a bent manner, so that the sprayed water can be prevented from entering the wind pipe 502.

[0041] In actual use, the plurality of dust suction covers 504 can cover the upper end opening of the screen frame 101, so that the dust generated during the screening of the coal blocks can be sucked into the dust suction cavity 507.

[0042] In combination with Figures 5-6 As shown in the drawings, in the embodiment, the spraying assembly includes a plurality of water supply pipes 500 arranged side by side on the upper side wall of the dust suppression cavity 509, the water supply pipes 500 are arranged along the length direction of the dust suppression cavity 509, and a plurality of spraying heads 501 are arranged on the outer side wall of the water supply pipe 500 along the axial direction of the water supply pipe 500.

[0043] In the embodiment, the circulating assembly comprises a connecting pipe 108 arranged on the water tank 113, the connecting pipe 108 is used for being communicated with the water conveying pipe 500, and the circulating assembly further comprises a circulating pump arranged in the dust suppression cavity 509, the circulating pump is communicated with the water tank 113 through the water suction pipe 111.

[0044] In actual use, the water in the water tank 113 can be introduced into the water conveying pipe 500 through the connecting pipe 108, and sprayed through the spray head 501, so that the dust entering the dust suppression cavity 509 can be sprayed and treated, thereby reducing the dust in the air blown through the through hole 109.

[0045] In actual use, the circulating pump and the water suction pipe 111 are arranged, so that the circulating pump can pump the spraying water collected in the dust suppression cavity 509 into the water suction pipe 111, and then conveyed to the water tank 113 through the water suction pipe 111, and filtered through the filter assembly.

[0046] In order to make the circulating pump better pump the spraying water in the dust suppression cavity 509 into the water tank 113 through the water suction pipe 111, in the embodiment, the bottom wall of the dust suppression cavity 509 is provided with a slope plate 506 along the length direction thereof, so that the spraying water in the dust suppression cavity 509 can be guided, and the spraying water in the dust suppression cavity 509 can be concentrated at one end of the dust suppression cavity 509, thereby facilitating the circulating pump to pump water.

[0047] In combination with Figures 6-7 As shown in the figure, in the embodiment, the filter assembly comprises a filter core 602 arranged in the water tank 113, the filter core 602 is used for filtering the spraying water pumped into the water tank 113, the upper side wall of the water tank 113 is provided with an opening communicating with a filter cavity, and opposite side walls of the filter cavity are provided with sliding grooves for sliding the filter core 602.

[0048] In actual use, the filter core 602 can be inserted into the filter cavity through the opening, and the two sides of the filter core 602 can be slid in the corresponding sliding grooves, so that the installation of the filter core 602 can be better achieved.

[0049] In actual use, the filter core 602 is used to divide the water tank 113 into a water inlet cavity 600 and a water storage cavity 601, the water suction pipe 111 pumps the spraying water in the dust suppression cavity 509 into the water inlet cavity 600, the spraying water in the water inlet cavity 600 is filtered through the filter core 602, so that the filtered spraying water can enter the water storage cavity 601, and the filtered water in the water storage cavity 601 is conveyed to the water conveying pipe 500 through the connecting pipe 108 and sprayed through the spray head 501.

[0050] The two filter elements 602 are arranged so that when the operator needs to replace one of the filter elements 602, the other filter element 602 can still filter the water in the water inlet cavity 600, facilitating actual use.

[0051] Specifically, the filter element 602 is filled with activated carbon, so that the filter element 602 can better adsorb and filter dust in the sprayed water in the water inlet cavity 600.

[0052] In order to facilitate the operator to draw out the filter element 602 for replacement, in the embodiment, a handle 112 is arranged on the upper side of the filter element 602.

[0053] In actual use, first, the coal blocks are added to the sieve frame 101 from the feeding end 110, the sieve plate 300 is driven to vibrate by the vibration motor 400, so that the coal blocks on the sieve plate 300 can be vibrated, and the sieving of coal blocks of different sizes is completed; then, the dust suction assembly is arranged, so that the fan 503 can suck the dust generated during the sieving of the coal blocks, and the dust is blown into the dust suppression cavity 509 through the air pipe 502; then, the water in the water storage cavity 601 is introduced into the water conveying pipe 500 through the connecting pipe 108, and is sprayed by the spray head 501 to suppress dust, and the air after the spray dust suppression is blown out of the dust suppression cavity 509 through the through hole 109; the sprayed water on the bottom wall of the dust suppression cavity 509 is drawn into the water inlet cavity 600 through the water suction pipe 111, and is filtered by the filter element 602 to enter the water storage cavity 601 for recycling.

[0054] In summary, the above only describes the preferred embodiments of the present application, and any changes and modifications made within the scope of the present application should be included in the scope of the present application.

Claims

1. A coal mining screening device, comprising a mounting frame (100), a sieve frame (101) is arranged on the mounting frame (100), the sieve frame (101) is provided with openings at the upper and lower ends, and a screening mechanism is arranged in the sieve frame (101); characterized in that: The screen frame (101) is provided with a detachable treatment cover (107) at the opening position of the upper end, the treatment cover (107) is provided with a treatment cavity, the treatment cavity is provided with a dust suction assembly, and the treatment cavity is further provided with a spraying assembly; the spraying assembly is used for spraying dust absorbed by the dust suction assembly to suppress dust; the upper side of the treatment cover (107) is provided with a water tank (113), the water tank (113) is used for supplying water to the spraying assembly, the water tank (113) is further provided with a circulating assembly, the circulating assembly is used for circulating water sprayed by the spraying assembly into the water tank (113), and the water tank (113) is further provided with a filtering assembly used for filtering water circulating into the water tank (113).

2. The coal mining screening device according to claim 1, characterized in that: The treatment cavity is provided with a fixed plate (508), the fixed plate (508) divides the treatment cavity into a dust suppression cavity (509) and a dust suction cavity (507); the dust suction assembly comprises a mounting plate (505) arranged in the dust suction cavity (507), a plurality of dust suction covers (504) are arranged on the lower side of the mounting plate (505) in parallel, and a fan (503) is arranged on the upper side of the mounting plate (505) corresponding to the dust suction cover (504); the dust suction cavity (507) is provided with a wind pipe (502) penetrating through the fixed plate (508) and extending into the dust suppression cavity (509), the wind pipe (502) is located at one end of the dust suppression cavity (509), and the other end of the dust suppression cavity (509) is provided with a through hole (109).

3. The coal mining screening device according to claim 1, characterized in that: The spraying assembly comprises a plurality of water supply pipes (500) arranged on the upper side wall of the dust suppression cavity (509) in parallel, the water supply pipes (500) are arranged along the length direction of the dust suppression cavity (509), and a plurality of spraying heads (501) are arranged on the outer side wall of the water supply pipe (500) in the axial direction.

4. The coal mining screening device of claim 1, wherein: The circulating assembly comprises a connecting pipe (108) arranged on the water tank (113), the connecting pipe (108) is used for being in communication with the water supply pipe (500), and the circulating assembly further comprises a circulating pump arranged in the dust suppression cavity (509), and the circulating pump is connected with the water tank (113) through a water suction pipe (111).

5. The coal mining screening device of claim 1, wherein: The filtering assembly comprises a filter core (602) arranged in the water tank (113), the filter core (602) is used for filtering spraying water drawn into the water tank (113), and the upper side wall of the water tank (113) is provided with an opening connected with a filtering cavity, and the opposite side walls of the filtering cavity are provided with sliding grooves for sliding the filter core (602) into.

6. The coal mining screening device of claim 4, wherein: The bottom wall of the dust suppression cavity (509) is provided with an inclined plate (506) along the length direction.

7. The coal mining screening device of claim 5, wherein: The upper side of the filter core (602) is provided with a handle (112).

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