Roller screen device for coal yard

Abstract

The utility model discloses a coal yard roller screen device which comprises a bottom plate, a screen drum, a driving assembly, two striking assemblies and two guide plates, a plurality of supporting legs are arranged on the upper surface of the bottom plate, a supporting ring is arranged between every two oppositely-arranged supporting legs, the screen drum is rotationally connected with the supporting rings, and the screen drum is obliquely arranged above the bottom plate; two first supports are arranged on the upper surface of the bottom plate, and the driving assembly is arranged on the first supports and connected with the screen drum. A second support is arranged on the supporting ring, a supporting shaft is rotationally connected to the second support, the two beating assemblies are arranged on the supporting shaft, and the beating assemblies are connected with the driving assembly; the two guide plates are oppositely arranged on the two sides of the screen drum, and a discharging opening is formed between the two guide plates. Therefore, the screen drum can be beaten in the process of driving the screen drum to rotate, coal mine particles are effectively prevented from being accumulated and blocked in the screen holes, and therefore the speed and efficiency of screening operation are remarkably improved.

Description

Technical Field

[0001] The utility model relates to the technical field of rolling screen devices, in particular to a rolling screen device in a coal yard. Background Art

[0002] Coal, as the primary solid fuel, is a type of combustible organic rock. It originates from lush plants in the geological history, accumulates layer by layer under specific geological conditions, and is eventually buried under water or mud. It is formed through a natural coalification process that takes tens of millions of years.

[0003] Screening is essential for mined coal, and drum screens are widely used due to their high efficiency. The drum screen uses a drive mechanism to rotate the screen drum, effectively screening the material on the screen. Once the material enters the drum, the varying apertures of the screen prevent large particles from penetrating the smaller apertures, while allowing smaller particles to pass through the larger apertures. This process repeats until the material is finely classified into particles of varying sizes.

[0004] However, during the operation of the drum screen, some coal lumps tend to be retained and stuck in the screen holes. If not cleaned in time, these coal lumps will gradually become solid, seriously hindering the screening process and reducing the overall screening efficiency. Utility Model Content

[0005] The utility model aims to solve one of the technical problems in the related art at least to a certain extent.

[0006] To this end, one purpose of the present invention is to propose a coal yard rolling screen device, which can strike the screen drum during the process of driving the screen drum to rotate, effectively preventing the accumulation and blockage of coal mine particles in the screen holes, thereby significantly improving the speed and efficiency of the screening operation.

[0007] To achieve the above-mentioned purpose, the first aspect of the present invention proposes a coal yard rolling screen device, comprising a base plate, a screen drum, a drive assembly, two striking assemblies and two guide plates, wherein the upper surface of the base plate is provided with a plurality of legs, a support ring is provided between two oppositely arranged legs, the screen drum is rotatably connected to the support ring, and the screen drum is obliquely arranged above the base plate; two first brackets are provided on the upper surface of the base plate, the drive assembly is provided on the first bracket, and the drive assembly is connected to the screen drum; a second bracket is provided on the support ring, and a support shaft is rotatably connected to the second bracket, two striking assemblies are respectively provided on the support shaft, and the striking assembly is connected to the drive assembly; the two guide plates are relatively arranged on both sides of the screen drum, and a discharge port is provided between the two guide plates.

[0008] The coal yard rolling screen device of the utility model can strike the screen drum during the process of driving the screen drum to rotate, effectively preventing the accumulation and blockage of coal mine particles in the screen holes, thereby significantly improving the speed and efficiency of the screening operation.

[0009] In addition, the coal yard rolling screen device proposed in the application may also have the following additional technical features:

[0010] Specifically, the drive assembly includes a drive shaft, two gears and two gear rings, wherein the drive shaft is rotatably connected to the first bracket; the two gears are both arranged on the drive shaft; the two gear rings are both arranged on the screen drum, and the two gear rings are respectively engaged with the corresponding gears.

[0011] Specifically, the striking assembly includes a rotating rod, a striking hammer, a spring, a push rod and a roller, wherein the rotating rod is rotatably arranged on the support shaft; the striking hammer is arranged at the end of the rotating rod; a connecting plate is provided on the rotating rod, and the two ends of the spring are respectively connected to the connecting plate and the guide plate; the push rod is arranged on the drive shaft; and the roller is installed at the end of the push rod.

[0012] Specifically, two first through slots and two second through slots are formed through one of the guide plates, the first through slots are arranged corresponding to the gears, and the second through slots are arranged corresponding to the push rods.

[0013] Specifically, baffles are respectively provided at the ends of the two guide plates, and guide grooves are formed between the baffles and the guide plates.

[0014] Additional aspects and advantages of the present invention will be given in part in the following description and in part will become apparent from the following description or learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The above and / or additional aspects and advantages of the present invention will become apparent and readily understood from the following description of the embodiments in conjunction with the accompanying drawings, in which:

[0016] Figure 1 This is a schematic diagram of the structure of a coal yard rolling screen device according to an embodiment of the utility model. Figure 1 ;

[0017] Figure 2 This is a right side view of a coal yard rolling screen device according to an embodiment of the present invention;

[0018] Figure 3 This is a schematic diagram of the structure of a coal yard rolling screen device according to an embodiment of the utility model. Figure 2 .

[0019] As shown in the figure: 1. Bottom plate; 2. Screen drum; 3. Drive assembly; 4. Striking assembly; 5. Guide plate; 6. First bracket; 7. Support ring; 8. Support leg; 9. Second bracket; 10. Support shaft; 11. Baffle; 12. Connecting plate; 30. Drive shaft; 31. Gear; 32. Gear ring; 40. Turn rod; 41. Striking hammer; 42. Spring; 43. Push rod; 44. Roller; 50. First through slot; 51. Second through slot. DETAILED DESCRIPTION

[0020] The following describes in detail embodiments of the present invention, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, and should not be construed as limiting the present invention. On the contrary, the embodiments of the present invention include all variations, modifications, and equivalents that fall within the spirit and scope of the appended claims.

[0021] The coal yard rolling screen device according to an embodiment of the present invention will be described below with reference to the accompanying drawings.

[0022] like Figures 1 to 3 As shown, the coal yard rolling screen device of the embodiment of the present invention may include a bottom plate 1, a screen drum 2, a driving assembly 3, two striking assemblies 4 and two guide plates 5.

[0023] Among them, a plurality of legs 8 are provided on the upper surface of the bottom plate 1 , a support ring 7 is provided between two oppositely arranged legs 8 , the sieve drum 2 is rotatably connected to the support ring 7 , and the sieve drum 2 is obliquely arranged above the bottom plate 1 .

[0024] It should be noted that the screen drum 2 described in this embodiment is suspended above the base plate 1. The screen drum 2 is a cylindrical structure with openings at both ends, and a plurality of sieve holes are provided on the screen drum 2. A feeding device (not shown in the figure) is provided at the higher end of the screen drum 2 to feed the coal to be screened into the interior of the screen drum 2.

[0025] Two first brackets 6 are provided on the upper surface of the bottom plate 1 , and the driving assembly 3 is arranged on the first brackets 6 , and the driving assembly 3 is connected to the screen drum 2 .

[0026] It should be noted that the driving assembly 3 described in this embodiment can drive the screen drum 2 to rotate, thereby driving the coal ore to roll. The coal ore can be screened during the rolling process. The coal ore larger than the sieve hole is retained inside the screen drum 2 and rolls out from the opening at the lower end of the screen drum 2. The coal ore smaller than the sieve hole passes through the sieve hole and falls onto the guide plate 5.

[0027] A second bracket 9 is provided on the support ring 7 , and a support shaft 10 is rotatably connected to the second bracket 9 . Two striking assemblies 4 are respectively provided on the support shaft 10 , and the striking assemblies 4 are connected to the driving assembly 3 .

[0028] It should be noted that the driving assembly 3 described in this embodiment can trigger the striking assembly 4 to strike the screen drum 2 so that the coal blocked on the screen drum 2 falls down, which is conducive to rapid screening.

[0029] The two guide plates 5 are oppositely arranged on both sides of the screen drum 2 , and a discharge port is provided between the two guide plates 5 .

[0030] In the embodiment of the present application, the guide plate 5 can guide the screened coal so that the screened coal can be concentrated in the same area.

[0031] Furthermore, in order to facilitate the unified collection of the screened coal, a conveyor belt (not shown in the figure) can be provided at the bottom of the screen drum 2. The conveyor belt is arranged below the discharge port. The coal discharged through the discharge port will fall directly onto the conveyor belt and be transported to the carriage or coal box via the conveyor belt.

[0032] In one embodiment of the present invention, Figure 1 As shown, the drive assembly 3 may include a drive shaft 30, two gears 31 and two gear rings 32, wherein the drive shaft 30 is rotatably connected to the first bracket 6; the two gears 31 are both arranged on the drive shaft 30; the two gear rings 32 are both arranged on the screen drum 2, and the two gear rings 32 are respectively engaged with the corresponding gears 31.

[0033] It should be noted that the drive shaft 30 described in this embodiment is connected to an external drive mechanism (such as a motor), which can drive the drive shaft 30 to rotate and drive the screen drum 2 to rotate through the cooperation of the gear 31 and the gear ring 32.

[0034] Furthermore, the diameter of the gear 31 is smaller than the diameter of the gear ring 32 , and the screen drum 2 can be driven to rotate slowly by the principle that the small gear drives the large gear ring to rotate and decelerate.

[0035] In one embodiment of the present invention, Figure 1 As shown, the striking assembly 4 may include a rotating rod 40, a striking hammer 41, a spring 42, a push rod 43 and a roller 44, wherein the rotating rod 40 is rotatably set on the support shaft 10; the striking hammer 41 is set at the end of the rotating rod 40; a connecting plate 12 is provided on the rotating rod 40, and the two ends of the spring 42 are respectively connected to the connecting plate 12 and the guide plate 5; the push rod 43 is set on the driving shaft 30; and the roller 44 is installed at the end of the push rod 43.

[0036] It should be noted that the rotating rod 40 described in this embodiment is an L-shaped rod, and the striking hammer 41 is located above the side of the screen drum 2. When the spring 42 is in a natural state, the striking hammer 41 is attached to the screen drum 2.

[0037] Furthermore, one end of the rotating rod 40 away from the striking hammer 41 is located within the movement range of the roller 44, that is, when the driving shaft 30 drives the push rod 43 and the roller 44 to rotate, the roller 44 can push the rotating rod 40 to rotate a certain angle, thereby driving the spring 42 to compress and deform. When the roller 44 is separated from the push rod 43, under the action of elastic potential energy, the striking hammer 41 strikes the screen drum 2.

[0038] In one embodiment of the present invention, Figure 2 and Figure 3 As shown, one of the guide plates 5 is provided with two first through slots 50 and two second through slots 51 . The first through slots 50 are provided corresponding to the gear 31 , and the second through slots 51 are provided corresponding to the push rod 43 .

[0039] It should be noted that a first through slot 50 and a second through slot 51 are provided on the guide plate 5 adjacent to the drive shaft 30. The gear 31 is arranged to pass through the first through slot 50. The second through slot 51 allows the push rod 43, the roller 44 and the rotating rod 40 to pass through, so as not to interfere with the movement of the striking assembly 4 and the gear 31.

[0040] In one embodiment of the present invention, Figure 1 and Figure 3 As shown, baffles 11 are respectively provided at the ends of the two guide plates 5 , and guide grooves are formed between the baffles 11 and the guide plates 5 .

[0041] In the embodiment of the present invention, the two baffles 11 can shield the two ends of the guide plate 5 to prevent the coal from rolling out from the two ends of the guide plate 5 .

[0042] Specifically, when screening coal, relevant personnel put the coal into the inside of the screen drum 2 and control the rotation of the drive shaft 30. The drive shaft 30 drives the gear 31 to rotate, and the screen drum 2 is driven to rotate slowly through the cooperation of the gear ring 32, so that the coal can roll in the screen drum 2 and roll down along the inclined screen drum 2. In the process of rolling of the coal, the coal larger than the screen hole will be trapped in the inside of the screen drum 2, and the coal smaller than the screen hole will pass through the screen hole into the inside of the guide groove and be discharged through the discharge port, realizing the screening process of the coal.

[0043] At the same time, when the drive shaft 30 rotates, it can drive the push rod 43 and the roller 44 to rotate. The roller 44 pushes the rotating rod 40 to rotate a certain angle in the first direction, so that the spring 42 is compressed and the striking hammer 41 is separated from the screen drum 2. When the roller 44 rotates to separate from the rotating rod 40, under the action of the elastic potential energy of the spring 42, the rotating rod 40 rotates in the second direction and drives the striking hammer 41 to hit the screen drum 2, so that the coal blocks stuck on the screen holes can fall off, thereby improving the screening efficiency.

[0044] In summary, the coal yard rolling screen device of the embodiment of the utility model can hit the screen drum during the process of driving the screen drum to rotate, effectively preventing the accumulation and blockage of coal mine particles in the screen holes, thereby significantly improving the speed and efficiency of the screening operation.

[0045] In this specification, the terms "first" and "second" are used for descriptive purposes only and should not be understood to indicate or imply relative importance or implicitly specify the number of technical features indicated. Therefore, a feature specified as "first" or "second" may explicitly or implicitly include at least one of such features. In the description of this utility model, "plurality" means at least two, for example, two, three, etc., unless otherwise specifically defined.

[0046] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art can combine and combine different embodiments or examples described in this specification and features of different embodiments or examples without contradiction.

Claims

1. A coal yard rolling screen device, characterized in that: It includes a bottom plate, a screen drum, a driving assembly, two striking assemblies and two guide plates, wherein: A plurality of legs are provided on the upper surface of the bottom plate, a support ring is provided between two oppositely arranged legs, the sieve drum is rotatably connected to the support ring, and the sieve drum is obliquely provided above the bottom plate; Two first brackets are provided on the upper surface of the bottom plate, the driving assembly is provided on the first brackets, and the driving assembly is connected to the screen drum; The support ring is provided with a second bracket, the second bracket is rotatably connected to a support shaft, two striking assemblies are respectively provided on the support shaft, and the striking assemblies are connected to the driving assembly; The two guide plates are arranged oppositely on both sides of the screen drum, and a discharge port is provided between the two guide plates.

2. The coal yard rolling screen device according to claim 1, characterized in that: The drive assembly includes a drive shaft, two gears and two gear rings, wherein: The driving shaft is rotatably connected to the first bracket; The two gears are both arranged on the drive shaft; The two gear rings are both arranged on the screen drum, and the two gear rings are respectively engaged with the corresponding gears.

3. The coal yard rolling screen device according to claim 2, characterized in that: The striking assembly includes a rotating rod, a striking hammer, a spring, a push rod and a roller, wherein: The rotating rod is rotatably arranged on the supporting shaft; The striking hammer is arranged at the end of the rotating rod; The rotating rod is provided with a connecting plate, and the two ends of the spring are respectively connected to the connecting plate and the guide plate; The push rod is arranged on the drive shaft; The roller is mounted on the end of the push rod.

4. The coal yard rolling screen device according to claim 3, characterized in that: One of the guide plates is provided with two first through slots and two second through slots, the first through slots are provided corresponding to the gears, and the second through slots are provided corresponding to the push rods.

5. The coal yard rolling screen device according to claim 1, characterized in that: Baffles are respectively provided at the ends of the two guide plates, and guide grooves are formed between the baffles and the guide plates.

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