A roller screen with easy-to-adjust roller gap

Abstract

This application relates to a roller screen with easily adjustable roller gap, belonging to the field of roller screens. It includes a frame and multiple circular rollers located on the frame. Each circular roller has a drive motor connected to both ends for rotating it. Each circular roller has a bearing seat rotatably connected to both ends. Each bearing seat is slidably connected to the frame. Each bearing seat has a fixing member installed for locking it to the frame. One side of each bearing seat is threaded with a set screw, and the set screw on each bearing seat contacts the adjacent bearing seat. This application provides a simple and reliable way to quickly adjust the gap between adjacent circular rollers.

Description

Technical Field

[0001] This application relates to the field of roller screens, and more particularly to a roller screen with an adjustable roller gap. Background Technology

[0002] Roller screens, as important material screening equipment, are widely used in industrial production, including mining and building materials. They screen granular materials through the relative motion between rollers, effectively improving production efficiency and product quality. With the continuous advancement of industrialization, the demand for efficient and precise material screening is increasing, making the design optimization and technological upgrading of roller screens a key focus of the industry.

[0003] Currently, common design schemes for roller screen devices with similar functions mainly include the following: one is a fixed structure design, in which the distance between the rollers is not adjustable and the initial gap is mainly guaranteed by precise machining; the other is a manual adjustment method, in which operators need to disassemble some parts before they can fine-tune the position of the rollers, which is relatively inconvenient.

[0004] Therefore, there is a lack of a simple and reliable adjustment mechanism to conveniently and quickly adjust the gap size between adjacent rollers. Utility Model Content

[0005] To provide a simple and reliable method for quickly adjusting the gap between adjacent rollers, this application provides a roller screen that facilitates roller gap adjustment.

[0006] The roller screen provided in this application, which facilitates the adjustment of the roller gap, adopts the following technical solution:

[0007] A roller screen with adjustable roller gap includes a frame and a plurality of circular rollers located on the frame. Each circular roller is connected to a drive motor at both ends for rotating the roller. Each circular roller is rotatably connected to a bearing seat at both ends. Each bearing seat is slidably connected to the frame. Each bearing seat is equipped with a fixing member for locking the bearing seat to the frame. Each bearing seat has a set screw threaded to one side. The set screw threaded to each bearing seat is in contact with the adjacent bearing seat.

[0008] By adopting the above technical solution, the adjustability of the gap between the rollers in the roller screen is achieved. Specifically, the drive motor can independently control the rotation of each roller, thereby meeting the needs under different working conditions; the sliding connection between the bearing housing and the frame, combined with the design of the fixing parts, allows operators to easily adjust the position of each roller, thus changing the gap size; rotating the set screws on the bearing housings allows for flexible adjustment of the length of the set screw extension. Since the threaded set screws on each bearing housing are in contact with adjacent bearing housings, the distance between two adjacent bearing housings can be precisely controlled. This design not only achieves effective adjustment of the gap but also ensures the stability of the relative position between the rollers, improving the working accuracy and adaptability of the equipment. Simultaneously, the physical contact of the set screws maintains the structural stability after adjustment, allowing for simple and reliable quick adjustment of the gap size between adjacent rollers.

[0009] Preferably, each of the bearing seats has a mounting hole, and a bearing is installed in the mounting hole. Each end of the roller is inserted into the corresponding bearing and connected to the bearing. Two oil seals are snapped into the mounting hole. Each oil seal is sleeved on the outside of the roller. The inner ring of each oil seal abuts against the outer wall of the roller, and the outer ring of each oil seal abuts against the inner wall of the mounting hole. The bearing is located between the two oil seals.

[0010] By adopting the above technical solution, a bearing is installed inside the mounting hole, and two oil seals are used to press against the outer wall of the roller and the inner wall of the mounting hole, respectively. This effectively reduces the entry of dust or other impurities into the bearing, thereby improving its service life. Simultaneously, placing the bearing between the two oil seals further enhances the sealing performance, ensuring the roller maintains good operating condition during rotation and reducing maintenance frequency.

[0011] Preferably, the bearing housing has an oil injection hole for injecting oil into the bearing, and a sealing plug is engaged in the oil injection hole.

[0012] By adopting the above technical solution, the design of opening an oil injection hole and using a sealing plug allows for convenient injection of lubricating oil into the bearing, thereby reducing frictional resistance during bearing operation, improving transmission efficiency, and extending bearing service life. The sealing plug effectively reduces lubricating oil leakage and prevents external dust and impurities from entering the bearing, ensuring long-term stable operation of the bearing.

[0013] Preferably, the mounting holes include a first mounting hole, a second mounting hole, and a third mounting hole with gradually decreasing diameters. The bearing is installed in the first mounting hole. One oil seal is engaged in the second mounting hole and abuts against an inner wall of the second mounting hole away from the first mounting hole. The other oil seal is engaged in the first mounting hole. A fixing groove is provided on the side wall of the first mounting hole. A gasket is engaged in the fixing groove and abuts against the side wall of the oil seal located in the first mounting hole away from the bearing.

[0014] By adopting the above technical solution, precise installation and positioning of bearings and oil seals are achieved. The mounting holes are divided into mounting holes one, two, and three with gradually decreasing diameters. This design allows the bearing to be securely installed in mounting hole one while providing reasonable installation space for the oil seals. One oil seal is engaged in mounting hole two, abutting against the inner wall of mounting hole two away from mounting hole one, effectively preventing impurities from entering the bearing area and improving sealing performance. The other oil seal is engaged in mounting hole one and further restrained by a gasket in the fixing groove, ensuring that the oil seal will not shift due to vibration or other factors, thus guaranteeing the stability and reliability of the entire structure. This design significantly improves the service life and operating efficiency of the equipment.

[0015] Preferably, two baffles are fixedly connected to the frame above the plurality of rollers, and the plurality of rollers are located between the two baffles.

[0016] By adopting the above technical solution, the baffle can effectively reduce the occurrence of material splashing out of the roller area during the screening process, ensuring the stability and safety of the screening operation, while also helping to maintain a clean working environment and reduce material waste.

[0017] Preferably, each of the baffles is fixedly connected with a plurality of auxiliary plates, and each auxiliary plate is inserted between two adjacent circular rollers.

[0018] By adopting the above technical solution, the auxiliary plate can effectively reduce the occurrence of material shifting or jamming between the rollers, ensuring that the material passes smoothly through the roller screen.

[0019] Preferably, two guide rails are fixedly connected to the frame, and the bearing seats on the same side of the multiple rollers are slidably connected to the same guide rail. Each bearing seat has a groove on its bottom surface, and each groove is inserted into the corresponding guide rail. Each guide rail has a limit groove on one side. The fixing component includes a locking rod that is threaded to each bearing seat, and one end of each locking rod abuts against the bottom wall of the corresponding limit groove.

[0020] By adopting the above technical solution, a stable sliding connection and position locking between the bearing housing and the frame are achieved. Specifically, the matching structure of the guide rail and the slide groove allows the bearing housing to move smoothly along the guide rail, thereby facilitating the adjustment of the position of the roller to change the roller gap size. At the same time, by opening a limiting groove on the guide rail and using a locking rod threaded to the bearing housing to abut against the bottom wall of the limiting groove, the bearing housing is firmly fixed after being adjusted to the appropriate position, reducing the occurrence of bearing housing position displacement due to external vibration and other factors, and improving the reliability of equipment operation.

[0021] Preferably, two mounting plates are fixedly connected to the frame, and the drive motors located on the same side of the multiple rollers are all connected to the same mounting plate. Each mounting plate has two elongated holes, and each drive motor has two sets of locking bolts threaded on it. Each set of locking bolts corresponds to one elongated hole, and each locking bolt passes through the corresponding drive motor and mounting plate and is threaded with a nut.

[0022] By adopting the above technical solution, the drive motor can be easily adjusted to adapt to the requirements of different roller spacings. The mounting plate provides a stable support base for the drive motor, while the elongated hole design allows the drive motor to move in a specific direction, thereby achieving precise position adjustment. The use of locking bolts and nuts ensures that the drive motor can be firmly fixed after being adjusted to the appropriate position.

[0023] In summary, this application includes at least one of the following beneficial technical effects:

[0024] 1. By setting a set screw on each bearing seat and having it contact the adjacent bearing seat, the roller spacing can be quickly adjusted and locked. The adjustment can be completed without disassembling parts, which improves the convenience of operation and solves the problem of complexity in traditional manual adjustment methods.

[0025] 2. The design of sliding connection between the bearing housing and the frame and locking it with fasteners ensures the stability of the roller in operation, avoids changes in the roller gap due to vibration or other external factors, and improves screening accuracy and reliability.

[0026] 3. Each roller is equipped with an independent drive motor, which supports individual control of the roller speed and direction, enhancing the flexibility and adaptability of the equipment and meeting the material screening needs under different working conditions. Attached Figure Description

[0027] Figure 1 This is a front view of the roller screen as illustrated in the embodiment of this application.

[0028] Figure 2 This is a top view of the roller screen as illustrated in the embodiment of this application.

[0029] Figure 3 This is a schematic diagram illustrating the structure of each roller connected to a drive motor in an embodiment of this application.

[0030] Figure 4 It is a manifestation Figure 1 Enlarged view of point A in the middle.

[0031] Figure 5 It is a manifestation Figure 2 Enlarged view of point B in the middle.

[0032] Figure 6 It is a manifestation Figure 3 A magnified view of point C in the middle.

[0033] Figure 7 It is a manifestation Figure 3 Enlarged view of point D in the middle.

[0034] Explanation of reference numerals in the attached drawings: 1. Frame; 11. Circular roller; 12. Mounting plate; 121. Long slot; 13. Guide rail; 131. Limiting groove; 2. Drive motor; 3. Bearing seat; 31. Set screw; 32. Mounting hole; 321. Mounting hole one; 322. Mounting hole two; 323. Mounting hole three; 33. Fixing groove; 34. Gasket; 35. Oil injection hole; 36. Slide groove; 4. Bearing; 41. First oil seal; 42. Second oil seal; 5. Locking rod; 6. Sealing plug; 7. Locking bolt; 71. Nut; 8. Baffle; 81. Auxiliary plate. Detailed Implementation

[0035] The following is in conjunction with the appendix Figures 1-7 This application will be described in further detail.

[0036] This application discloses a roller screen with easily adjustable roller gap. (Refer to...) Figure 1 and Figure 2 The roller screen includes a frame 1 and multiple circular rollers 11 arranged parallel to each other along the length of the frame 1. Each circular roller 11 has a drive motor 2 connected to both ends via a coupling. (Refer to...) Figure 2 and Figure 3 Two mounting plates 12 are fixedly connected to the frame 1 by screws or other fasteners, and the drive motors 2 located on the same side of the multiple rollers 11 are all mounted on the same mounting plate 12.

[0037] Reference Figure 3 and Figure 4 Each of the two ends of each roller 11 is rotatably connected to a bearing seat 3, and each bearing seat 3 is slidably connected to the frame 1.

[0038] Each bearing housing 3 has a set screw 31 threadedly connected to one side wall, and the set screw 31 threadedly connected to each bearing housing 3 abuts against the side wall of the adjacent bearing housing 3. The distance between two adjacent bearing housings 3 can be adjusted by adjusting the extension length of the set screw 31.

[0039] Reference Figure 5 and Figure 6 Each bearing housing 3 has a mounting hole 32, and a bearing 4 is connected to each mounting hole 32. The bearing 4 is interference-fitted with the bearing housing 3. Each bearing housing 3 is connected to a fastener for locking the bearing housing 3 to the frame 1.

[0040] The mounting holes 32 of the bearing housing 3 are designed as a three-stage stepped hole structure, including mounting hole 321, mounting hole 322, and mounting hole 323 with successively decreasing diameters. The bearing 4 is press-fitted into mounting hole 321. A first oil seal 41 and a second oil seal 42 are respectively provided on both sides of the bearing 4. The first oil seal 41 is embedded in mounting hole 322 and abuts against the end face of mounting hole 322, while the second oil seal 42 is embedded in mounting hole 321. An annular fixing groove 33 is formed on the side wall of mounting hole 321. An elastic gasket 34 is engaged in the fixing groove 33, and the gasket 34 abuts against the side wall of the second oil seal 42 away from the first oil seal 41.

[0041] The bearing housing 3 is provided with an oil injection hole 35 at the top. The lubricating oil injected through the oil injection hole 35 permeates into the bearing raceway through the oil guide groove on the bearing 4. A sealing plug 6 is threaded into the oil injection hole 35.

[0042] Reference Figure 5 and Figure 6 The bearing housing 3 has a sliding groove 36 at its bottom. Two guide rails 13 are fixedly connected to the frame 1. Each guide rail 13 is arranged along the length of the frame 1. The sliding grooves 36 on the bearing housing 3 located at the same end of the multiple rollers 11 are all slidably engaged with the same guide rail 13. A limiting groove 131 is opened on the side of the guide rail 13. The fixing component includes a locking rod 5 that is threadedly connected to one side wall of the bearing housing 3. One end of the locking rod 5 abuts against the bottom wall of the limiting groove 131, thereby realizing the quick locking of the bearing housing 3.

[0043] Reference Figure 5 and Figure 7 Each mounting plate 12 has two elongated holes 121, which are arranged along the length of the frame 1 and the mounting plate 12. A mounting bracket is fixedly connected to the drive motor 2, and the mounting bracket is connected to two sets of locking bolts 7. Each set of locking bolts 7 passes through the same elongated hole 121, and the end of each locking bolt 7 is screwed with a nut 71 to secure the position of the drive motor 2, thereby adapting to the adjustment requirements of bearing seats 3 with different spacing.

[0044] Reference Figure 3 and Figure 6 Two rows of baffles 8 are fixedly connected to the upper part of the frame 1, and multiple auxiliary plates 81 are fixedly connected to the bottom end of each baffle 8. Each auxiliary plate 81 is inserted into the gap between two adjacent circular rollers 11.

[0045] The implementation principle of a roller screen for easy adjustment of the roller gap in this application embodiment is as follows: When adjusting the roller gap, first loosen the locking rod 5 and the nut 71, and then finely adjust the distance between adjacent bearing seats 3 by adjusting the top screw 31. After observing that the roller gap reaches the target gap width, re-lock the locking rod 5 and the nut 71. During maintenance, unscrew the sealing plug 6 and inject grease, while the first oil seal 41 and the second oil seal 42 effectively reduce the occurrence of dust entering the bearing 4.

[0046] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A roller screen with easily adjustable roller gap, characterized in that: The device includes a frame (1) and multiple rollers (11) located on the frame (1). Each roller (11) is connected to a drive motor (2) at both ends for rotating the roller (11). Each roller (11) is rotatably connected to a bearing seat (3) at both ends. Each bearing seat (3) is slidably connected to the frame (1). Each bearing seat (3) is equipped with a fixing member for locking the bearing seat (3) to the frame (1). Each bearing seat (3) has a set screw (31) threaded on one side. Each set screw (31) threaded on the bearing seat (3) is in contact with the adjacent bearing seat (3).

2. A roller screen with easily adjustable roller gap according to claim 1, characterized in that: Each of the bearing seats (3) is provided with a mounting hole (32), and a bearing (4) is installed in the mounting hole (32). Each end of the roller (11) is inserted into the corresponding bearing (4) and connected to the bearing (4). Two oil seals are snapped into the mounting hole (32). Each oil seal is sleeved on the outside of the roller (11). The inner ring of each oil seal abuts against the outer wall of the roller (11). The outer ring of each oil seal abuts against the inner wall of the mounting hole (32). The bearing (4) is located between the two oil seals.

3. A roller screen with easily adjustable roller gap according to claim 2, characterized in that: The bearing housing (3) is provided with an oil injection hole (35) for injecting oil into the bearing (4), and a sealing plug (6) is inserted into the oil injection hole (35).

4. A roller screen with easily adjustable roller gap according to claim 2, characterized in that: The mounting hole (32) includes a mounting hole 1 (321), a mounting hole 2 (322), and a mounting hole 3 (323) with gradually decreasing diameters. The bearing (4) is installed in the mounting hole 1 (321). One of the oil seals is engaged in the mounting hole 2 (322) and abuts against the inner wall of the mounting hole 2 (322) away from the mounting hole 1 (321). The other oil seal is engaged in the mounting hole 1 (321). A fixing groove (33) is provided on the side wall of the mounting hole 1 (321). A gasket (34) is engaged in the fixing groove (33). The gasket (34) abuts against the side wall of the oil seal located in the mounting hole 1 (321) away from the bearing (4).

5. A roller screen with easily adjustable roller gap according to claim 1, characterized in that: Two baffles (8) are fixedly connected to the frame (1) above a plurality of rollers (11), and the plurality of rollers (11) are located between the two baffles (8).

6. A roller screen with easily adjustable roller gap according to claim 5, characterized in that: Each of the baffles (8) is fixedly connected with a plurality of auxiliary plates (81), and each auxiliary plate (81) is inserted between two adjacent circular rollers (11).

7. A roller screen with easily adjustable roller gap according to claim 1, characterized in that: Two guide rails (13) are fixedly connected to the frame (1). The bearing seats (3) on the same side of the multiple rollers (11) are all slidably connected to the same guide rail (13). Each bearing seat (3) has a sliding groove (36) on its bottom surface. Each sliding groove (36) is inserted into the corresponding guide rail (13). Each guide rail (13) has a limiting groove (131) on one side. The fixing component includes a locking rod (5) that is threadedly connected to each bearing seat (3). One end of each locking rod (5) abuts against the bottom wall of the corresponding limiting groove (131).

8. A roller screen with easily adjustable roller gap according to claim 1 or 7, characterized in that: Two mounting plates (12) are fixedly connected to the frame (1). The drive motors (2) located on the same side of the multiple rollers (11) are all connected to the same mounting plate (12). Each mounting plate (12) has two elongated holes (121). Each drive motor (2) has two sets of locking bolts (7) threadedly connected. Each set of locking bolts (7) corresponds to one elongated hole (121). Each locking bolt (7) passes through the corresponding drive motor (2) and mounting plate (12) and is threadedly connected to a nut (71).

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