Self-cleaning rotary screen cylinder particle sifter

Abstract

The utility model discloses a self-cleaning rotary screen cylinder granule screening machine belongs to screening machine technical field, including frame, the drive shaft of rotation installation on frame, the screen cylinder of fixedly sleeving in the outside of drive shaft, the discharge hopper of being located frame end portion and bottom and the drive motor of driving drive shaft rotation. The utility model is with the transmission structure of drive motor, driving wheel, driven wheel and belt, and brush roll can realize rotary motion with screen cylinder synchronization, and the relative friction of bristle and screen cylinder surface preliminary cleaning adhering material, and cooperate the reciprocating mechanism of fixed plate, sleeve, corrugated guide groove and connecting rod, and brush roll is driven under the spline shaft, can along screen cylinder axial do periodic reciprocating movement, make bristle can cover screen cylinder full length and circumference each area, and double motion superposition, thoroughly solve the problem of traditional brush roll clearing block not thoroughly, effectively avoid the screening ability decline of screen hole blockage.

Description

Technical Field

[0001] This utility model relates to particle screening machines, and in particular to a self-cleaning rotary screen cylinder particle screening machine, belonging to the field of screening machine technology. Background Technology

[0002] In particle processing in industries such as mining and building materials, drum screens are key equipment. Their unclogging mechanism is mostly a brush roller parallel to the screen cylinder, designed to prevent screen holes from clogging through relative motion.

[0003] In actual operation, the screen cylinder rotates continuously around its own central axis. The fixed brush rollers not only have difficulty fully covering the surface of the screen cylinder, but also have poor cleaning effect. Furthermore, they cannot effectively remove some firmly stuck materials inside the screen holes. To solve this problem, some companies have to stop the machine regularly and send personnel to manually clean the screen cylinder inside the equipment. This not only interrupts the normal production process and increases labor costs, but also poses significant safety hazards due to the limited operating space and complex environment inside the equipment, which has an adverse impact on both production efficiency and operational safety.

[0004] To address these issues, a self-cleaning rotary screen granulator was designed. Utility Model Content

[0005] The main purpose of this invention is to provide a self-cleaning rotary screen cylinder particle screening machine to solve the problems mentioned in the background art.

[0006] The objective of this utility model can be achieved by adopting the following technical solution:

[0007] The self-cleaning rotary screen cylinder particle screening machine includes a frame, a drive shaft rotatably mounted on the frame, a screen cylinder sleeved and fixed outside the drive shaft, a hopper located at the end and bottom of the frame, and a drive motor that drives the drive shaft to rotate.

[0008] Bearing seats are provided at both ends on one side of the top of the frame. Bushings are rotatably installed inside the bearing seats. Splined shafts are slidably installed inside the bushings along the length direction. A brush roller that fits against the surface of the screen cylinder is fixed between the two sets of splined shafts.

[0009] A linkage assembly is provided between the end of the bushing and the end of the drive shaft;

[0010] One end of the top of the frame is equipped with a reciprocating mechanism that controls the spline shaft to move back and forth in a straight line.

[0011] Preferably, the linkage assembly includes a driven wheel, a driving wheel, and a belt. The driven wheel is fixed to the end of the bushing, the driving wheel is fixed to the end of the drive shaft, and a belt is provided between the driving wheel and the driven wheel.

[0012] Preferably, the reciprocating mechanism includes a fixed plate, a sleeve, a corrugated guide groove, and a connecting rod. The fixed plate is fixed to the end of the frame, and a sleeve is fixedly installed on the top of the fixed plate. The sleeve is sleeved on the end of the spline shaft. A corrugated guide groove is provided circumferentially on the inner side of the sleeve. A connecting rod is slidably arranged inside the corrugated guide groove, and the connecting rod is fixed to the end of the spline shaft.

[0013] Preferably, there are four sets of connecting rods, and the included angle between adjacent connecting rods is 90 degrees.

[0014] Preferably, the brush bristles of the brush roller are made of elastic and wear-resistant material, with a bristle length of 5-10cm, and the bristles are evenly distributed along the circumference of the brush roller, with a spacing of 1-2cm between adjacent groups of bristles.

[0015] Preferably, the axial distance between the crests and troughs of the corrugated guide groove is 15-20cm, and the inner wall of the corrugated guide groove is provided with a wear-resistant coating.

[0016] Preferably, the spline shaft and the bushing are provided with a grease filling hole, and the top of the grease filling hole is provided with a dust cover.

[0017] Compared with the prior art, the beneficial effects of this utility model are:

[0018] 1. This utility model utilizes a transmission structure consisting of a drive motor, a driving wheel, a driven wheel, and a belt. The brush roller can rotate synchronously with the screen cylinder. The relative friction between the bristles and the surface of the screen cylinder initially cleans the attached material. In conjunction with a reciprocating mechanism consisting of a fixed plate, a sleeve, a corrugated guide groove, and a connecting rod, the brush roller, driven by the spline shaft, can periodically reciprocate along the axial direction of the screen cylinder. This allows the bristles to cover the entire length and circumference of the screen cylinder. The superposition of these two movements not only efficiently removes loose material from the surface of the screen cylinder but also creates a combined force of "rotational scraping and axial peeling" on stubborn material stuck in the screen holes. This completely solves the problem of incomplete cleaning by traditional brush rollers and effectively avoids the reduction in screening capacity caused by screen hole blockage.

[0019] 2. The screen cylinder of this utility model rotates continuously under the drive shaft to complete the screening operation. The cleaning action of the brush roller is linked with the operation of the screen cylinder through the transmission system, without the need for additional machine shutdown. Moreover, the cleaning process is completely driven by the equipment's own transmission structure and reciprocating mechanism, without the need for manual intervention. This eliminates the need for personnel to perform regular manual cleaning, reducing the company's investment in recruitment, management and maintenance. In the long run, it can help companies reduce operating costs and improve the economic cost-effectiveness of the equipment. Attached Figure Description

[0020] Figure 1 This is the front view of the present invention;

[0021] Figure 2 This is a schematic diagram of the transmission principle of this utility model;

[0022] Figure 3 This is a diagram of the reciprocating mechanism of this utility model;

[0023] Figure 4 This is an internal view of the sleeve of this utility model.

[0024] In the diagram: 1. Frame; 101. Drive shaft; 102. Screen cylinder; 103. Feed hopper; 104. Drive motor

[0025] 2. Bearing housing; 3. Bushing; 4. Splined shaft; 5. Brush roller; 6. Driven pulley; 7. Drive pulley; 8. Belt;

[0026] 9. Reciprocating mechanism; 901. Fixed plate; 902. Sleeve; 903. Corrugated guide groove; 904. Connecting rod. Detailed Implementation

[0027] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model.

[0028] Therefore, the following detailed description of the embodiments of this utility model is not intended to limit the scope of the claimed utility model, but merely to illustrate some embodiments of the utility model. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without inventive effort are within the scope of protection of this utility model.

[0029] It should be noted that, unless otherwise specified, the embodiments and features and technical solutions in the present invention can be combined with each other.

[0030] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0031] In the description of this utility model, it should be noted that the terms "upper," "lower," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product is in use, or the orientation or positional relationship commonly understood by those skilled in the art. These terms are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on this utility model. In addition, the terms "first," "second," etc., are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0032] Example 1

[0033] like Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, this embodiment proposes a self-cleaning rotary screen cylinder particle screening machine, including a frame 1, a drive shaft 101 rotatably mounted on the frame 1, a screen cylinder 102 sleeved and fixed outside the drive shaft 101, a hopper 103 located at the end and bottom of the frame 1, and a drive motor 104 that drives the drive shaft 101 to rotate.

[0034] Bearing seats 2 are provided at both ends on one side of the top of the frame 1. A bushing 3 is rotatably installed inside the bearing seat 2. A splined shaft 4 is slidably installed inside the bushing 3 along the length direction. A brush roller 5 that is in contact with the surface of the screen cylinder 102 is fixed between the two sets of splined shafts 4.

[0035] A linkage assembly is provided between the end of the bushing 3 and the end of the drive shaft 101;

[0036] One end of the top of the frame 1 is provided with a reciprocating mechanism 9 that controls the spline shaft 4 to move back and forth in a straight line.

[0037] When the equipment starts, the drive motor 104 is powered on and runs, and its output power directly drives the drive shaft 101 connected to it to rotate around its own axis. Since the screen cylinder 102 is sleeved and fixed outside the drive shaft 101, the rotation of the drive shaft 101 will synchronously drive the screen cylinder 102 to rotate. The granular material to be screened enters the screen cylinder 102 from the end of the frame 1. The rotating screen cylinder 102 uses its own screen holes to classify and screen the material. The fine particles that meet the particle size requirements fall through the screen holes and are finally discharged from the feed hopper 103 at the bottom of the frame 1, completing the basic screening operation.

[0038] As the drive shaft 101 rotates, the linkage component at its end begins to operate, transmitting power to the bushing 3. The bushing 3 is rotatably mounted inside the bearing seats 2 at both ends of the top side of the frame 1. The rotation of the bushing 3 will drive the splined shaft 4, which is slidably disposed inside it along the length direction, to rotate synchronously. Since the brush roller 5, which is in contact with the surface of the screen cylinder 102, is fixedly connected between the two sets of splined shafts 4, the rotation of the splined shaft 4 directly drives the brush roller 5 to rotate. The brush roller 5, through the relative friction between its bristles and the surface of the screen cylinder 102, initially removes the material attached to the surface of the screen cylinder 102, reducing the risk of screen hole clogging.

[0039] The reciprocating mechanism 9 at one end of the top of the frame 1 works continuously during equipment operation, applying axial force to the spline shaft 4 and controlling the spline shaft 4 to move linearly back and forth along the length of the bushing 3. The reciprocating movement of the spline shaft 4 will drive the brush roller 5 fixed thereto to move periodically back and forth along the axial direction of the screen cylinder 102, so that the bristles of the brush roller 5 can cover the entire length of the screen cylinder 102. In conjunction with the rotation of the brush roller 5, the surface of the screen cylinder 102 and the screen holes are thoroughly cleaned.

[0040] Example 2

[0041] The following section provides a further description of the scheme in Example 1, focusing on its specific working method. See the description below for details:

[0042] like Figure 2 As shown, in a preferred embodiment, based on the above method, the linkage component further includes a driven wheel 6, a driving wheel 7 and a belt 8. The driven wheel 6 is fixed to the end of the bushing 3, the driving wheel 7 is fixed to the end of the drive shaft 101, and a belt 8 is provided between the driving wheel 7 and the driven wheel 6.

[0043] When the drive shaft 101 rotates, the drive wheel 7 fixed at its end rotates along with it. The drive wheel 7 transmits power to the driven wheel 6 fixed at the end of the bushing 3 via the belt 8. The driven wheel 6 drives the bushing 3 to rotate stably within the bearing seat 2. This belt drive method ensures the smoothness of power transmission, keeping the rotational speeds of the bushing 3, splined shaft 4, and brush roller 5 matched with the rotational speeds of the drive shaft 101 and screen cylinder 102, thus ensuring the coordination between the brush roller 5's cleaning action and the screen cylinder 102's screening action.

[0044] like Figure 3 As shown, in a preferred embodiment, based on the above method, the reciprocating mechanism 9 further includes a fixed plate 901, a sleeve 902, a corrugated guide groove 903, and a connecting rod 904. The fixed plate 901 is fixed to the end of the frame 1. The sleeve 902 is fixedly installed on the top of the fixed plate 901. The sleeve 902 is sleeved on the end of the spline shaft 4. The inner side of the sleeve 902 is provided with a corrugated guide groove 903 along the circumferential direction. The connecting rod 904 is slidably arranged inside the corrugated guide groove 903, and the connecting rod 904 is fixed to the end of the spline shaft 4.

[0045] When the spline shaft 4 rotates, the connecting rod 904 rotates with the spline shaft 4 and moves along the corrugated track of the guide groove 903 under the constraint of the corrugated guide groove, thereby driving the spline shaft 4 to reciprocate along the axial direction.

[0046] like Figure 3 As shown, in a preferred embodiment, based on the above method, four sets of connecting rods 904 are further provided, and the included angle between adjacent connecting rods 904 is ninety degrees, which can improve the stability of the spline shaft 4 during reciprocating movement.

[0047] like Figure 4 As shown, in a preferred embodiment, based on the above method, the bristles of the brush roller 5 are made of elastic and wear-resistant material, the bristle length is 5-10cm, and the bristles are evenly distributed along the circumference of the brush roller 5, with a spacing of 1-2cm between two adjacent groups of bristles.

[0048] The brush roller 5 is made of elastic and wear-resistant materials such as polyurethane and wear-resistant nylon, which allows the bristles to fit tightly against the surface of the screen cylinder 102, so that even if there is a slight roundness deviation in the screen cylinder 102, it can be effectively cleaned; the wear-resistant material extends the service life of the bristles, and the evenly distributed spacing ensures that there are no dead corners in the cleaning.

[0049] like Figure 1 As shown, in a preferred embodiment, based on the above method, the axial distance between the crests and troughs of the corrugated guide groove 903 is 15-20cm, and the inner wall of the corrugated guide groove 903 is provided with a wear-resistant coating, which can reduce wear during long-term use.

[0050] like Figure 3 As shown, in a preferred embodiment, based on the above method, a grease filling hole is provided at the mating point between the spline shaft 4 and the bushing 3, and a dust cover is provided at the top of the grease filling hole.

[0051] Regularly adding grease can reduce frictional losses during relative sliding and rotation. The dust cover at the top of the filling hole can prevent dust from entering, avoid wear on the mating surfaces, and improve the stability of equipment operation.

[0052] Example 3

[0053] The solutions in Embodiments 1 and 2 will be further described below with reference to their specific working methods.

[0054] After the equipment is started, the drive motor 104 drives the drive shaft 101 to rotate. On the one hand, this drives the screen cylinder 102 to rotate for material screening. Particles enter the screen cylinder 102 through the end of the frame 1, and qualified materials are discharged from the bottom hopper 103 through the screen holes. On the other hand, the drive shaft 101 transmits power to the bushing 3 through a linkage assembly consisting of the drive wheel 7, belt 8, and driven wheel 6. The bushing 3 drives the spline shaft 4 and brush roller 5 to rotate, achieving initial unblocking. At the same time, when the spline shaft 4 rotates, its end connecting rod 904 moves within the corrugated guide groove 903 of the sleeve 902, driving the spline shaft 4 and brush roller 5 to reciprocate axially along the screen cylinder 102, forming a compound unblocking action of "rotation + axial reciprocation".

[0055] The combined motion of brush roller 5 efficiently removes loose materials from the surface of screen cylinder 102, and also generates a combined force of "rotational scraping + axial peeling" on stubborn materials stuck in the screen holes, completely solving the problem of incomplete cleaning by traditional brush rollers. The entire cleaning process is linked to the operation of screen cylinder 102 through the transmission system, requiring no additional machine shutdown and is entirely driven by the equipment's own structure, requiring no manual intervention. This not only avoids production interruptions caused by manual cleaning and saves on labor costs, but also eliminates the safety hazards of manual operation inside the equipment. Long-term operation can significantly improve production efficiency, reduce enterprise operating costs, and fully realize the economic cost-effectiveness of the equipment.

[0056] The above description is only a further embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the scope disclosed by the present utility model, based on the technical solution and concept of the present utility model, shall fall within the protection scope of the present utility model.

Claims

1. A self-cleaning rotary screen cylinder particle screening machine, comprising a frame (1), a drive shaft (101) rotatably mounted on the frame (1), a screen cylinder (102) sleeved and fixed outside the drive shaft (101), a hopper (103) located at the end and bottom of the frame (1), and a drive motor (104) for driving the drive shaft (101) to rotate. Its features are: Bearing seats (2) are provided at both ends of the top side of the frame (1). A bushing (3) is rotatably installed inside the bearing seat (2). A spline shaft (4) is slidably installed inside the bushing (3) along the length direction. A brush roller (5) that fits against the surface of the screen cylinder (102) is fixed between the two sets of spline shafts (4). A linkage assembly is provided between the end of the bushing (3) and the end of the drive shaft (101); One end of the top of the frame (1) is provided with a reciprocating mechanism (9) that controls the spline shaft (4) to move back and forth in a straight line.

2. The self-cleaning rotary screen cylinder particle separator according to claim 1, characterized in that: The linkage assembly includes a driven wheel (6), a driving wheel (7) and a belt (8). The driven wheel (6) is fixed to the end of the bushing (3), the driving wheel (7) is fixed to the end of the drive shaft (101), and a belt (8) is provided between the driving wheel (7) and the driven wheel (6).

3. The self-cleaning rotary screen cylinder particle separator according to claim 1 or 2, characterized in that: The reciprocating mechanism (9) includes a fixed plate (901), a sleeve (902), a corrugated guide groove (903), and a connecting rod (904). The fixed plate (901) is fixed to the end of the frame (1). The sleeve (902) is fixedly installed on the top of the fixed plate (901). The sleeve (902) is sleeved on the end of the spline shaft (4). The inner side of the sleeve (902) is provided with a corrugated guide groove (903) along the circumferential direction. The connecting rod (904) is slidably arranged inside the corrugated guide groove (903), and the connecting rod (904) is fixed to the end of the spline shaft (4).

4. The self-cleaning rotary screen cylinder particle separator according to claim 3, characterized in that: There are four sets of connecting rods (904), and the included angle between adjacent connecting rods (904) is ninety degrees.

5. The self-cleaning rotary screen cylinder particle separator according to claim 1, characterized in that: The bristles of the brush roller (5) are made of elastic and wear-resistant material. The length of the bristles is 5-10cm, and the bristles are evenly distributed along the circumference of the brush roller (5). The distance between two adjacent groups of bristles is 1-2cm.

6. The self-cleaning rotary screen cylinder particle separator according to claim 3, characterized in that: The axial distance between the crests and troughs of the corrugated guide groove (903) is 15-20cm, and the inner wall of the corrugated guide groove (903) is provided with a wear-resistant coating.

7. The self-cleaning rotary screen cylinder particle separator according to claim 1, characterized in that: The spline shaft (4) and the bushing (3) are provided with a grease filling hole, and the top of the grease filling hole is provided with a dust cover.

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