Stone grading drum screen

Abstract

The utility model relates to the technical field of drum screens, in particular to a stone grading drum screen which comprises a mounting base, a first screen drum, a driving assembly and a feeding assembly. The first screen drum is rotationally mounted at the tops of the two ends of the mounting seat, and a second screen drum which is in rolling connection with the mounting seat and is used for secondarily screening stones in a screening state is arranged on the outer side of the first screen drum; the feeding assembly is arranged at the top end of the mounting base and located at the ends of the second screen drum and the first screen drum. The driving assembly is arranged at the top of the mounting base, and one end of the driving assembly extends to the outer side of the second screen drum and is engaged with the second screen drum. According to the utility model, the two screen drums are rotationally mounted on the mounting seat while being placed in a sleeving manner, the mounting positions are positioned on the outer sides of the screen drums, and meanwhile, the two screen drums are oppositely rotated for screening during screening through the matching of the driving assembly and the transmission assembly, so that the screen is relatively convenient to disassemble, assemble and maintain; and the condition that the inner side of the screen drum is hindered is avoided.

Description

Technical Field

[0001] This utility model relates to the field of drum screen technology, specifically to a stone grading drum screen. Background Technology

[0002] Rotary drum screens are a widely used type of machinery in sorting technology. They control the sorting by particle size, resulting in high sorting accuracy.

[0003] Chinese patent document CN207154093U discloses a stone grading drum screen, which includes a first screen and a second screen that are coaxially sleeved and inclined, a gear assembly that drives the first screen and the second screen to rotate in opposite directions, a power source that drives the gear assembly to rotate, and a support assembly that supports the first screen and the second screen. The diameter of the first screen is smaller than that of the second screen, and the aperture of the first screen is larger than that of the second screen.

[0004] However, in the above scheme, the first and second screens are supported by rotating with each other through bearings. During use, the bearings may obstruct the discharge of stones, causing the screens to become clogged. Utility Model Content

[0005] The purpose of this invention is to address the problems existing in the background technology by proposing a stone grading drum screen.

[0006] The technical solution of this utility model is: a stone grading drum screen, including a mounting base, a first screen cylinder, a drive assembly, and a feeding assembly;

[0007] The first screen cylinder is rotatably installed at the top of both ends of the mounting base. The outer side of the first screen cylinder is provided with a second screen cylinder that is rotatably connected to the mounting base and performs secondary screening of the stones in the screening state.

[0008] The feeding assembly is located at the top of the mounting base and at the ends of the second screen cylinder and the first screen cylinder;

[0009] The drive assembly is located on the top of the mounting base and one end extends to the outside of the second screen cylinder and engages with the second screen cylinder. One end of the drive assembly, located at the end of the second screen cylinder, is provided with a transmission component for rotating the second screen cylinder and the first screen cylinder in opposite directions during use.

[0010] Preferably, the mounting base includes a base plate, a support bracket, and a support frame;

[0011] There are two support frames, both mounted on the top of the base plate and rotatably connected to the second screen cylinder; support frames are located at both ends of the base plate, and are equipped with rollers for supporting the first screen cylinder.

[0012] There are two support frames, both of which are installed on the top of the base plate and located on the side of the support frame, and are connected to the first screen cylinder by bearings.

[0013] Preferably, tracks are provided on both outer sides of the second screen cylinder, and rollers are provided on both top sides of the support frame. When the second screen cylinder and the support frame are installed together, the rolling of the support frame is accommodated in the tracks.

[0014] Preferably, the first screen cylinder includes a connecting rod, a support plate, and a first screen cylinder body;

[0015] The surface of the first sieve cylinder body has sieve holes, and the outer diameter value is smaller than the inner diameter value of the second sieve cylinder;

[0016] There are two support plates, and the two support plates are respectively set at one end of the first screen cylinder body;

[0017] The connecting rod is installed in the middle of the support plate and extends to the outside of the first screen cylinder body at both ends and is connected to the support frame through bearings.

[0018] Preferably, the length of the first screen cylinder body is greater than the length of the second screen cylinder, and one end of the first screen cylinder body is flush with one end of the second screen cylinder body.

[0019] Preferably, the drive assembly includes a shaft, a motor, and a drive gear;

[0020] The rotating shaft is rotatably mounted at the bottom end of the support frame and the bracket.

[0021] The motor is mounted on the top of the base plate and connected to the shaft via a coupling;

[0022] The drive gear is installed at the other end of the rotating shaft and meshes with the second screen cylinder.

[0023] Preferably, an external toothed ring is provided on the outer side of the second screen cylinder and on the side of the track, and the external toothed ring is meshed with the drive gear.

[0024] Preferably, the transmission assembly includes a support rod, a gear transmission component, and a chain transmission component;

[0025] The support rod is rotatably mounted on the side of the support frame;

[0026] The rotating shaft is mounted on the rotating shaft and the support rod;

[0027] The gear transmission components are mounted on the connecting rod and the support rod.

[0028] Preferably, the feeding assembly includes a baffle and a guide plate;

[0029] The baffle is installed on the top of the bottom plate and covers the ends of the second screen cylinder and the first screen cylinder body. The side of the baffle and the side of the support plate are provided with a through hole that communicates with the first screen cylinder body.

[0030] The guide vane is installed on the side of the baffle and located at the edge of the through hole.

[0031] Compared with the prior art, the above-mentioned technical solution of this utility model has the following beneficial technical effects:

[0032] This invention places two screen cylinders together and rotates them onto the mounting base, positioning them on the outside of the screen cylinders. Through the cooperation of the drive and transmission components, the two screen cylinders rotate in opposite directions during screening, making disassembly and maintenance more convenient and avoiding obstruction on the inside of the screen cylinders. Attached Figure Description

[0033] Figure 1-2 All of these are perspective views of one embodiment of the present invention.

[0034] Figure 3 This is an exploded view of the feeding assembly structure in one embodiment of the present invention.

[0035] Figure 4 This is a schematic diagram of the transmission component structure in one embodiment of the present invention.

[0036] Reference numerals in the attached drawings: 1. Base plate; 2. Support frame; 3. Support frame; 4. Second screen cylinder; 5. External gear ring; 6. Track; 7. Support rod; 8. Baffle; 9. Guide plate; 10. Connecting rod; 11. Gear transmission component; 12. Chain transmission component; 13. Rotating shaft; 14. Motor; 15. Support plate; 16. First screen cylinder body; 17. Drive gear; 18. Through hole. Detailed Implementation

[0037] Example 1

[0038] like Figure 1-4 As shown, the present invention proposes a stone grading drum screen, which includes a mounting base, a first screen cylinder, a drive assembly, and a feeding assembly.

[0039] The first screen cylinder is rotatably installed at the top of both ends of the mounting base. The outer side of the first screen cylinder is provided with a second screen cylinder 4 that is rotatably connected to the mounting base and performs secondary screening of stones in the screening state.

[0040] The feeding assembly is located at the top of the mounting base and at the ends of the second screen cylinder 4 and the first screen cylinder;

[0041] The drive assembly is located on the top of the mounting base and one end extends to the outside of the second screen cylinder 4 and engages with the second screen cylinder 4. One end of the drive assembly and the end of the second screen cylinder 4 is provided with a transmission component for rotating the second screen cylinder 4 and the first screen cylinder in opposite directions during use.

[0042] In this embodiment, the second screen cylinder 4 is installed on the top of the rolling mounting base, and the first screen cylinder is located inside the second screen cylinder 4 and coaxially placed on the mounting base. The supporting components of the first screen cylinder and the second screen cylinder 4 are both located on the outside. At the same time, the second screen cylinder 4 is driven to roll on the mounting base by the drive assembly, and the second screen cylinder 4 is rotated in the opposite direction to the first screen cylinder by the transmission assembly, so as to achieve the purpose of grading stones.

[0043] Example 2

[0044] like Figure 1-2 As shown, the present invention proposes a stone grading drum screen. The difference between this embodiment and the first embodiment is that the mounting base includes a base plate 1, a support frame 2 and a support frame 3.

[0045] There are two support frames 2, both of which are installed on the top of the base plate 1 and are rotatably connected to the second screen cylinder 4;

[0046] There are two support frames 3. Both support frames 3 are installed on the top of the base plate 1 and located on the side of the support frame 2, and are connected to the first screen cylinder through bearings.

[0047] In an optional embodiment, tracks 6 are provided on both outer sides of the second screen cylinder 4, and rollers are provided on both top sides of the support frame 2. When the second screen cylinder 4 and the support frame 2 are installed together, the rollers of the support frame 2 are accommodated in the tracks 6. The rollers of the support frame 2 are arranged symmetrically with respect to the center of the second screen cylinder 4, which are used to limit the position of the second screen cylinder 4 in cooperation with the tracks 6 during use and make the rotation of the second screen cylinder 4 smoother.

[0048] In this embodiment, the second screen cylinder 4 and the first screen cylinder are supported by the support frame 2 and the support frame 3 respectively, so that the supporting components of the first screen cylinder and the second screen cylinder 4 are located on the outside, so as to avoid the situation of obstructing the discharge of stones on the inside.

[0049] Example 3

[0050] like Figure 1-2 As shown, the present invention proposes a stone grading drum screen. Compared with the first embodiment, the difference in this embodiment is that the first screen cylinder includes a connecting rod 10, a support plate 15 and a first screen cylinder body 16.

[0051] The surface of the first sieve cylinder body 16 has sieve holes, and the outer diameter value is smaller than the inner diameter value of the second sieve cylinder 4.

[0052] There are two support plates 15, which are respectively set at one end of the first screen cylinder body 16, and the outer toothed ring 5 is X-shaped, which is used to discharge material through the notch of the support plate 15 during use.

[0053] The connecting rod 10 is installed in the middle of the support plate 15 and extends to the outside of the first screen cylinder body 16 at both ends and is connected to the support frame 3 through bearings.

[0054] In an optional embodiment, the length of the first screen cylinder body 16 is greater than the length of the second screen cylinder 4, and one end of the first screen cylinder body 16 is flush with one end of the second screen cylinder 4.

[0055] In this embodiment, the connecting rod 10 is connected to the first screen cylinder body 16 by the support plate 15, so that the support plate 15 and the connecting rod 10 cooperate to support the first screen cylinder body 16, and the stones are screened through the screen holes of the first screen cylinder body 16.

[0056] Example 4

[0057] like Figure 1 As shown, the present invention proposes a stone grading drum screen. Compared with the first embodiment, the difference in this embodiment is that the driving component includes a rotating shaft 13, a motor 14 and a drive gear 17.

[0058] The rotating shaft 13 is rotatably mounted at the bottom end of the support frame 2 and the support frame 3;

[0059] The motor 14 is mounted on the top of the base plate 1 and connected to the rotating shaft 13 via a coupling;

[0060] The drive gear 17 is installed at the other end of the rotating shaft 13 and meshes with the second screen cylinder 4.

[0061] In an optional embodiment, an external toothed ring 5 is provided on the outer side of the second screen cylinder 4 and on the side of the track 6, and the external toothed ring 5 is meshed with the drive gear 17.

[0062] In this embodiment, by setting an external gear ring 5 on the outside of the second screen cylinder 4 that meshes with the drive gear 17, when the motor 14 drives the drive gear 17 to rotate, the rotating shaft 13 drives the drive gear 17 to rotate, and the drive gear 17 drives the second screen cylinder 4 to rotate on the outside of the external gear ring 5 that meshes with it, thus realizing the screening of stones.

[0063] Example 5

[0064] like Figure 4As shown, the present invention proposes a stone grading drum screen. Compared with the first embodiment, the difference in this embodiment is that the transmission component includes a support rod 7, a gear transmission component 11, and a chain transmission component 12.

[0065] The support rod 7 is rotatably mounted on the side of the support frame 3;

[0066] The rotating shaft 13 is mounted on the rotating shaft 13 and the support rod 7;

[0067] The gear transmission component 11 is mounted on the connecting rod 10 and the support rod 7. During use, the position of the support rod 7 on the support frame 3 can be changed so that the gear transmission component 11 and the chain transmission component 12 can be used interchangeably.

[0068] In this embodiment, the support rod 7 supports the chain drive 12 and the gear drive 11, so that when the rotating shaft 13 rotates, the chain drive 12 drives the support rod 7 to rotate, and the support rod 7 drives the gear drive 11 to rotate. Through the structure of the gear drive 11 and the chain drive 12, the gear drive 11 drives the connecting rod 10 to rotate in the opposite direction to the rotating shaft 13, so that the second screen cylinder 4 and the first screen cylinder body 16 rotate in opposite directions.

[0069] Example 6

[0070] like Figure 3 As shown, the present invention proposes a stone grading drum screen. The difference between this embodiment and the first embodiment is that the feeding component includes a baffle 8 and a guide plate 9.

[0071] The baffle 8 is installed on the top of the base plate 1 and covers the ends of the second screen cylinder 4 and the first screen cylinder body 16. The side of the baffle 8 and the side of the support plate 15 are provided with a through hole 18 that communicates with the first screen cylinder body 16. The side of the baffle 8 and the ends of the second screen cylinder 4 and the first screen cylinder body 16 are separated to prevent friction between the baffle 8 and the second screen cylinder 4 and the first screen cylinder body 16 during use.

[0072] The guide plate 9 is installed on the side of the baffle 8 and located at the edge of the through hole 18.

[0073] In this embodiment, the end of the first screen cylinder body 16 of the second screen cylinder 4 is blocked by the baffle 8, and a through hole 18 with the same notch as the support plate 15 is provided on the end face of the baffle 8. The stones are guided into the through hole 18 by the guide plate 9, so that the stones can smoothly enter the first screen cylinder body 16 for screening and avoid the stones from falling off.

[0074] In this invention, the second screen cylinder 4 is installed at the top of the support frame 2, with the rollers of the support frame 2 located inside the track 6. Simultaneously, the connecting rod 10 is connected to the support frame 3 via a bearing, and the first screen cylinder body 16 is installed inside the second screen cylinder 4 through the cooperation of the connecting rod 10 and the support plate 15. Furthermore, the baffle 8's installation position and the through hole 18 on its end face communicating with the notch in the support plate 15 allow the guide plate 9 to convey stones through the through hole 18 and the notch in the support plate 15 into the first screen cylinder body 16. This is achieved via an electric... The machine 14 drives the rotating shaft 13 to rotate. The rotating shaft 13 is connected to the external gear ring 5 through the meshing of the drive gear 17, which drives the second screen cylinder 4 to rotate on the rollers of the support frame 2. The rollers of the support frame 2 move inside the track 6. At the same time, through the sequential transmission of the chain drive 12, the support rod 7 and the gear drive 11, the rotating shaft 13 drives the connecting rod 10 to rotate in the opposite direction according to the rotating shaft 13. The connecting rod 10 drives the first screen cylinder body 16 to rotate in the opposite direction to the second screen cylinder 4 through the support plate 15, so that the first screen cylinder body 16 and the second screen cylinder 4 can classify and screen the stones.

[0075] The embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the present invention is not limited thereto. Various changes can be made within the scope of knowledge possessed by those skilled in the art without departing from the spirit of the present invention.

Claims

1. A stone sizing drum screen characterized by, The installation seat, the first screen cylinder, the driving assembly and the feeding assembly are included. The first screen cylinder is rotatably installed at the top of the two ends of the installation seat, and the outer side of the first screen cylinder is provided with a second screen cylinder (4) in rolling connection with the installation seat and used for secondary screening of the stones in the screening state. The feeding assembly is arranged at the top end of the installation seat and located at the end of the second screen cylinder (4) and the first screen cylinder. The driving assembly is arranged at the top of the installation seat and extends to the outer side of the second screen cylinder (4) in meshing connection with the second screen cylinder (4), and one end of the driving assembly and located at the end of the second screen cylinder (4) is provided with a transmission assembly for rotating the second screen cylinder (4) and the first screen cylinder in opposite directions in the use state.

2. A stone fractionating roller screen according to claim 1, characterised in that, The installation seat includes a bottom plate (1), a support frame (2) and a supporting frame (3). The number of the support frames (2) is two, and the two support frames (2) are both installed at the top end of the bottom plate (1) and in rolling connection with the second screen cylinder (4). The number of the supporting frames (3) is two, and the two supporting frames (3) are both installed at the top end of the bottom plate (1) and located at the side of the support frames (2) and in bearing connection with the first screen cylinder.

3. A stone fractionating roller screen according to claim 2, characterised in that, The outer side of the two ends of the second screen cylinder (4) is provided with a track (6), and the top end of the two sides of the support frame (2) is provided with a rolling wheel.

4. A stone classifying drum screen according to claim 2, wherein, The first screen cylinder includes a connecting rod (10), a supporting plate (15) and a first screen cylinder body (16). The surface of the first screen cylinder body (16) is provided with screen holes, and the outer side diameter value is smaller than the inner side diameter value of the second screen cylinder (4). The number of the supporting plates (15) is two, and the two supporting plates (15) are both arranged at one end of the first screen cylinder body (16). The connecting rod (10) is installed at the middle part of the supporting plate (15) and extends to the outer side of the first screen cylinder body (16) at two ends and is in bearing connection with the supporting frame (3).

5. A stone classifying drum screen according to claim 4, wherein, The length value of the first screen cylinder body (16) is greater than the length value of the second screen cylinder (4), and one end of the first screen cylinder body (16) is flush with one end of the second screen cylinder (4).

6. A stone classifying drum screen according to claim 2, wherein, The driving assembly includes a rotating shaft (13), a motor (14) and a driving gear (17). The rotating shaft (13) is rotatably installed at the bottom end of the support frame (2) and the supporting frame (3). The motor (14) is installed at the top end of the bottom plate (1) and is in coupling connection with the rotating shaft (13). The driving gear (17) is installed at the other end of the rotating shaft (13) and is in meshing connection with the second screen cylinder (4).

7. A stone classifying drum screen according to claim 6, wherein, The outer side of the second screen cylinder (4) and located at the side of the track (6) is provided with an external gear ring (5), and the external gear ring (5) is in meshing connection with the driving gear (17).

8. A stone classifying drum screen according to claim 6, wherein, The transmission assembly includes a supporting rod (7), a gear transmission member (11) and a chain transmission member (12). The supporting rod (7) is rotatably installed at the side of the supporting frame (3). The rotating shaft (13) is installed on the rotating shaft (13) and the supporting rod (7). The gear transmission member (11) is installed on the connecting rod (10) and the supporting rod (7).

9. A stone classifying drum screen according to claim 4, wherein, The feeding assembly includes a baffle (8) and a guide plate (9). A baffle plate (8) is installed at the top end of the base plate (1) and covers the end of the second screen cylinder (4) and the first screen cylinder body (16), the side of the baffle plate (8) and located at the side of the support plate (15) is provided with a through hole (18) in communication with the first screen cylinder body (16); A guide plate (9) is installed at the side of the baffle plate (8) and located at the edge of the through hole (18).

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