Disc sieve
By setting convex ribs on the shaft of the disc screen to enhance friction and remove animal materials, the problems of material slippage and swing back are solved, and the pass rate of the screen and the convenience of maintenance of the equipment are improved.
Patent Information
- Application Number
- CN202420766022.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-04-12
- Publication Date
- 2024-12-24
- Estimated Expiration
- 2034-04-12
AI Technical Summary
The smooth outer surface of the existing disc screen causes material to slip and swing back, increasing the material retention time and the probability of unqualified materials slipping, reducing the pass rate of the screen, especially for elastic materials such as tires.
Setting convex ribs on the outer surface of the shaft increases friction and avoid slipping and swinging. At the same time, controlling the convex rib size to keep the size of the screen hole unchanged. By shaking and breaking the material, the passing rate of the screen is improved. , and facilitates maintenance.
It effectively reduces material slippage and swing, improves the pass rate of the screen, extends the service life of the shaft, and reduces maintenance costs.
Smart Images
Figure CN222220206U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of screening equipment, in particular to a disc screen. Background Art
[0002] Disc screens are widely used in the field of screening material technology, mainly for screening fragments, slag and other materials. The specific structure is that metal discs of different shapes are welded vertically on the shaft, and then a certain number of shafts are arranged together according to a certain wheelbase and placed on the frame. Through the rotation of the shaft and the discs, small particles of material can slide through the gap of the shaft, and large particles of material can move to the outside of the screen across the gap of the shaft, thereby achieving the purpose of screening;
[0003] However, the outer surface of the shaft of the disc screen with this structure is relatively smooth, and the material will slip and swing when rolling on the shaft surface. Especially for strip-shaped and elastic materials such as tires, the slipping and swinging process will increase the time they stay on the disc screen. At the same time, slipping and swinging will also change their angle, thereby greatly increasing the probability of unqualified sized materials slipping through the gap, resulting in the problem of low pass rate of the disc screen's screened materials. Utility Model Content
[0004] The utility model aims to provide a disc screen, which reduces or avoids the slipping and swinging of materials by arranging ridges on the outer surface of the shaft, thereby improving the qualified rate of the materials screened by the disc screen.
[0005] To achieve the above-mentioned purpose, the utility model provides a disc screen, comprising a frame; a plurality of shafts rotatably connected to the frame, the plurality of shafts being arranged in parallel, the shafts being sequentially installed with a plurality of screen plates, and driving the screen plates to rotate so as to convey and screen materials; wherein: a convex ridge is arranged on the shaft, the convex ridge extends along the axial direction of the shaft and protrudes from the outer wall surface of the shaft, and the maximum height of the convex ridge protruding from the outer wall surface is less than or equal to 1 / 2 of the minimum distance between the side walls of two adjacent shafts.
[0006] By adopting such a ridge, the friction force can be increased on the outer surface of the shaft. The ridge rotates with the shaft, and during the rotation process, the material can be moved and broken, while the material can be prevented from slipping and swinging back. However, the size of the ridge cannot be too large. If the ridge is too large, the size of the adjacent shaft and the adjacent screen will increase, thereby causing the screen hole to become larger, which is more unfavorable to the qualified rate of the screened material. In the present application, the maximum height of the ridge from the side wall is less than or equal to 1 / 2 of the minimum distance between the two adjacent shafts. Within this range, the slipping and swinging materials can be effectively moved, and the friction force on the outer surface of the shaft is increased. At the same time, there is no need to increase the size of the original screen hole, which can make the size of the screen hole more reasonable and improve the qualified rate of the screened material. In addition, the method of setting the ridge can also protect the outer wall surface of the shaft, avoid the outer wall surface of the shaft from being damaged by repeated friction with the material, and after the ridge is damaged, it can be repaired by welding, thereby facilitating the repair and maintenance of the device and reducing the repair cost.
[0007] Optionally, the number of the ridges arranged on the same shaft is greater than or equal to 2, and the ridges are evenly distributed along the circumference of the shaft.
[0008] Optionally, a plurality of convex teeth are formed on the outer periphery of the screen plate, and the number of the convex teeth is ≥8.
[0009] Optionally, the screen is arranged to be inclined relative to the central axis of the shaft.
[0010] Optionally, the angle between the screen plate and the central axis is α, and α is less than or equal to 87°.
[0011] Optionally, the screens located on two adjacent axes are staggered.
[0012] Optionally, the screen plates located on two adjacent axes are inclined in opposite directions.
[0013] Optionally, it further includes a bearing connection seat, and both ends of the shaft are connected to the frame through the bearing connection seats on the corresponding sides respectively; the bearing connection seat is fixedly connected to the frame.
[0014] Optionally, a bearing connection seat is further included, and the bearing connection seat is slidably connected to the frame.
[0015] Optionally, the frame includes a supporting guide rail, and the bearing connecting seat can slide along the supporting guide rail; a nut is provided in the supporting guide rail, and the bearing connecting seat is provided with a bolt, and the bottom end of the bolt is located in the supporting guide rail to match the nut. BRIEF DESCRIPTION OF THE DRAWINGS
[0016] The accompanying drawings, which are incorporated in and constitute a part of the specification, illustrate embodiments of the specification and, together with the description, serve to explain the principles of the specification.
[0017] Figure 1 1 is a top view of the disc screen in the embodiment of the utility model;
[0018] Figure 2 yes Figure 1 Side section of middle AA;
[0019] Figure 3 yes Figure 1 A partial side view of
[0020] Figure 4 yes Figure 1 A partial enlarged view of
[0021] Figure 5 It is a schematic diagram of the arrangement of the disc screen, one of them;
[0022] Figure 6 This is a schematic diagram of the arrangement of the disc screen, part 2;
[0023] Figure 7 This is a schematic diagram of the arrangement of the disc screen, part 3;
[0024] Figure 8 This is a schematic diagram of the arrangement of the disc screen, No. 4;
[0025] Fig. 9 This is a schematic diagram of the arrangement of the disc screen, No. 5;
[0026] Fig.10 This is a schematic diagram of the arrangement of the disc screen, No. 6;
[0027] Fig.11 It is the principle diagram of screen plate rotation;
[0028] Fig.12 is a side view of the bearing connection seat, one;
[0029] Fig.13 This is the side view of the bearing connection seat, part 2;
[0030] Fig.14 yes Fig.13 Side section of AA.
[0031] Figure 1-Figure 14 middle:
[0032] 100, rack;
[0033] 200, screen; 201, convex teeth;
[0034] 300, shaft;
[0035] 400, convex ridge;
[0036] 500, bearing connection seat; 501, bearing; 502, seat plate; 503, bolt;
[0037] 600, support rail; 601, nut; 602, slideway. DETAILED DESCRIPTION
[0038] In order to enable those skilled in the art to better understand the present invention, the present invention is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.
[0039] The up and down, left and right, front and back directions in this article are set with reference to the disc screen in normal use. In the height direction of the disc screen, the direction pointing to the ground is down, and vice versa is up; in the operation of the disc screen, the direction of conveying materials is forward, and vice versa is backward, and the front and back direction is the length direction of the disc screen; perpendicular to its height direction, the left and right directions relative to its forward direction are the width directions of the disc screen, and the width direction is also the axial direction of the shaft 300, each shaft 300 extends along the width direction, and several shafts 300 are arranged at intervals along the length direction of the disc screen, and several shafts 300 are parallel.
[0040] Unless otherwise specified, the inside and outside in this article are defined with reference to the central axis of the shaft 300. In the radial direction of the shaft 300, the direction pointing to the central axis is inside, and the opposite direction is outside.
[0041] Relational terms such as “first” and “second” and the like are merely used to distinguish one component from another having the same name, but do not necessarily require or imply any such actual relationship or order between these components.
[0042] In a traditional disc screen, the outer surface of the shaft of the disc screen is relatively smooth, and the material may slip and swing when rolling on the shaft surface. Especially for strip-shaped, elastic materials such as tires, the time they stay on the disc screen is increased during the slipping and swinging process. At the same time, the slipping and swinging will also cause their angles to change, thereby greatly increasing the probability of materials of unqualified sizes sliding through the gaps, resulting in a low pass rate for the disc screen's screened materials. To address this technical problem, the utility model provides a disc screen, which reduces or avoids slipping and swinging of the material by arranging a ridge 400 on the outer surface of the shaft 300, thereby improving the pass rate for the disc screen's screened materials.
[0043] Please refer to Figures 1 to 4 , Figure 1 1 is a top view of the disc screen in the embodiment of the utility model; Figure 2 yes Figure 1 Side section of middle AA; Figure 3 yes Figure 1 A partial side view of Figure 4 yes Figure 1 A partial enlarged view of .
[0044] As shown in the figure, the disc screen of the present invention comprises a frame 100, a screen 200 and a plurality of shafts 300 rotatably connected to the frame 100. The frame 100 is placed on the ground to support the shafts 300 to a set height. The shafts 300 are arranged in parallel and spaced apart along the length direction of the frame 100. The shafts 300 are sequentially installed with a plurality of screens 200, that is, the shafts 300 are used to connect with the screen 200 and drive the screen 200 to rotate so as to convey and screen materials. The shafts 300 and the screen 200 can be welded, riveted, crimped, etc. The connection method between the shafts 300 and the screen 200 is a prior art and will not be described in detail here. In the present embodiment, the structure of the shaft 300 is improved. Specifically, a shaft 300 is provided with A convex rib 400 is provided, the convex rib 400 extends along the axial direction of the shaft 300 and protrudes from the outer wall surface of the shaft 300; the convex rib 400 can be strip-shaped, the strip-shaped convex rib 400 extends along the axial direction and passes through the screen plate 200 in sequence, that is, at least one convex rib 400 is provided between two adjacent screen plates 200, of course, two or more convex ribs 400 can also be provided, and when there are more than two convex ribs 400, the plurality of convex ribs 400 are evenly spaced along the circumferential direction; in addition to the strip-shaped convex rib 400, it can also be a point-shaped convex rib 400, that is, a non-continuous convex rib 400, and a plurality of convex ribs 400 spaced along the axial direction are provided between two adjacent screen plates 200, and only the specific form of the convex rib 400 is described above. Two examples are given to illustrate that structures similar to the above are also included in the protection scope of the present application, so that the ridge 400 can protrude radially from the outer surface of the shaft 300; by using such a ridge 400, the friction force can be increased on the outer surface of the shaft 300, and the ridge 400 and the shaft 300 form a follow-up rotation. During the rotation process, the material can also be moved and broken, and the material can be prevented from slipping and swinging back; however, the size of the ridge 400 cannot be too large. If the ridge 400 is too large, the size of the adjacent shaft 300 and the adjacent screen 200 will increase, thereby causing the screen hole to become larger, which is more unfavorable to the qualified rate of the screened material. In the present application, the maximum height of the ridge 400 from the side wall is less than or equal to the distance between the two adjacent shafts 30 0, wherein the distance between the two shafts 300 refers to the distance between the side walls of the two adjacent shafts 300, that is, the surface on which the screen 200 is installed; within this range, the slipping and swinging materials can be effectively moved, the friction of the outer surface of the shaft 300 is increased, and at the same time, there is no need to increase the size of the original screen hole, the size of the screen hole can be made more reasonable, and the qualified rate of the screened material is improved; in addition, the method of setting the ridge 400 can also protect the outer wall surface of the shaft 300, avoid the outer wall surface of the shaft 300 from being damaged by repeated friction with the material, and after the ridge 400 is damaged, it can be repaired by welding, thereby facilitating the repair and maintenance of the device and reducing the repair cost.
[0045] The following is attached Figure 2 and Figure 3, as an example, the convex ribs 400 extend axially and sequentially penetrate the screen plates 200 on the same shaft 300, that is, in the screen holes defined between adjacent screen plates 200 and adjacent shafts 300, at least two convex ribs 400 will pass through the screen holes, thereby moving the materials retained in the screen holes; specifically, the number of convex ribs 400 located on two adjacent shafts 300 is the same or different, that is, the two adjacent shafts 300 can each be provided with a convex rib 400; or one is provided with a convex rib 400 and the other is provided with a plurality of convex ribs 400; each is provided with a plurality of convex ribs 400, and when a plurality of convex ribs 400 are provided, the number of convex ribs 400 on the two shafts 300 can also be different or the same; for example, Figure 2 As shown, one of the two adjacent shafts 300 is provided with a convex rib 400, and the other is provided with four convex ribs 400 evenly distributed along the circumferential direction. The number of the convex ribs 400 can also be as follows: Figure 5-Figure 7 , Figure 8-Figure 10 As shown, the number of ridges 400 can be two, three, five or six, etc. The more ridges 400 there are, the more times the material can be moved per unit time. Technical personnel in this field can set the number of ridges 400 according to the actual needs of on-site operations.
[0046] See also Figure 5-Figure 7 , Figure 8-Figure 10 , Figure 5 It is a schematic diagram of the arrangement of the disc screen, one of them; Figure 6 This is a schematic diagram of the arrangement of the disc screen, part 2; Figure 7 This is a schematic diagram of the arrangement of the disc screen, part 3; Figure 8 This is a schematic diagram of the arrangement of the disc screen, No. 4; Fig. 9 This is a schematic diagram of the arrangement of the disc screen, No. 5; Fig.10 6. It is a schematic diagram of the arrangement of the disc screen; in these two groups of drawings, the number of convex teeth 201 of the screen 200 is different. Specifically, a plurality of convex teeth 201 are formed on the outer periphery of the screen 200, and the number of convex teeth 201 is ≥8; within this range, the screen 200 has a strong conveying capacity and screening ability for materials. At the same time, due to the provision of convex ridges 400, the slippage and swing back of the material can be further reduced; in detail, the number of convex teeth 201 of the screen 200 is 8, and the number of convex ridges 400 on the same shaft 300 is 4; of course, the number of convex teeth 201 can also be 15, or 20, etc.; of course, in the height direction, several layers of shafts 300 can be provided, and the number of convex ridges 400 of each shaft 300 of each layer can be the same or different, and the number of convex teeth 201 of the screen 200 of each shaft 300 can be the same or different, and no specific limitation is made on the number of convex teeth 201 and the number of convex ridges 400.
[0047] In other embodiments of the present application, conventional screens are vertically mounted on the surface of the shaft, that is, perpendicular to the central axis of the shaft, so that the screen has only one rotating surface, and the rotating surface is also circular. Such a screen arrangement cannot quickly break up the material, causing the material pile to move horizontally on the screen surface, and small-sized materials cannot be quickly separated from the material pile, which will affect the screening efficiency of the equipment and weaken the screening function of the equipment; in order to solve this technical problem, please continue to refer to Fig.11 , Fig.11 : is a schematic diagram of the rotation principle of the screen; the screen 200 in the present application is tilted relative to the central axis of the shaft 300, and the angle between the screen 200 and the central axis is α, which is less than or equal to 87°; through such a setting, as the shaft 300 rotates, the screen 200 will form a double-conical rotation trajectory, so that the material pile is not in a stable forward-moving state but is quickly broken up, so that small material particles will quickly break away from the material pile and find suitable sieve holes to enter the screen. In addition, the sweeping method of the screen 200 can further reduce the retention of large pieces of material; Preferably, the sieve plates 200 located on two adjacent shafts 300 are staggered and tilted in opposite directions relative to the central axis of the shaft 300, that is, the sieve plates 200 of one shaft 300 are deflected clockwise relative to the central axis of the shaft 300, and the sieve plates 200 of the adjacent shafts 300 are deflected counterclockwise relative to the central axis, so that the inclination directions of the sieve plates 200 located on the two adjacent shafts 300 are opposite; in this way, during the rotation process, two sieve plates 200 will be swept through one sieve hole at the same time, which can increase the degree of dispersion of the material within the range of a single sieve hole.
[0048] In the above embodiments, please see Figure 12-14 , Fig.12 is a side view of the bearing connection seat, one; Fig.13 This is the side view of the bearing connection seat, part 2; Fig.14 yes Fig.13 The disc screen also includes a bearing 501 connecting seat 500, and the two ends of the shaft 300 are connected to the frame 100 through the bearing 501 connecting seat 500 on the corresponding side; specifically, the bearing 501 connecting seat 500 also includes a bearing 600 and a seat plate 502, the bearing 600 is used to adapt to the two ends of the shaft 300, the seat plate 502 is arranged on the outside of the bearing 600, and extends a certain size along the radial direction of the bearing 600. In the figure, the bearing 600 and the seat plate 502 are arranged along the length direction, and both are directly or indirectly pressed against the upper surface of the frame 100 in the height direction; in one embodiment, the bearing 501 connecting seat 500 is fixedly connected to the frame 100, specifically,
[0049] The seat plate 502 is directly connected to the frame 100 by bolts 503, and screw holes are provided at corresponding positions of the bracket. The seat plate 502 and the bearing 600 are directly pressed against the upper surface of the frame 100. With this connection method, the spacing between adjacent shafts 300 cannot be adjusted; optionally, the bearing 501 connection seat 500 is slidably connected to the frame 100. Specifically, the frame 100 is further provided with a support rail 600, and the support rail 600 is a box-shaped structure, so as to have a higher structural strength. A slideway 602 is provided on the upper surface of the support rail 600, and the slideway 602 connects the internal space of the support rail 600 with The outside is connected, the slideway 602 extends in the length direction, the bearing 501 connects the seat 500 to press against the support rail 600, and is connected to the support rail 600 by a bolt 503; a nut 601 is provided in the support rail 600, the bottom end of the bolt 503 passes through the seat plate 502, and is located in the support rail 600 to match the nut 601, thereby realizing the movement of the shaft 300 in the length direction, and then adjusting the shaft 300 distance between two adjacent shafts 300; further, in order to further increase the structural strength, the size of the seat plate 502 in the width direction is larger than the size of the support rail 600 in the width direction.
[0050] Compared with the prior art, the disc screen according to the present invention can achieve the following beneficial effects:
[0051] First, a ridge 400 is installed in the middle of the screen 200 and on the surface of the shaft 300, thereby increasing the friction of the shaft 300 and reducing the wear of the shaft 300, which plays a key role in maintaining the stable size of the screen hole and extending the service life of the shaft 300;
[0052] Second, the screen 200 is tilted and arranged at a certain angle to the center line of the shaft 300, not vertically, so that a double-cone rotation area is formed when rotating along the center of the shaft 300. After the material enters the screen surface, as the shaft 300 rotates, the material pile is quickly broken up in the double-cone rotation sweeping area of the screen 200, and small particles enter the gap of the shaft 300 to the bottom of the screen. Large particles of material move forward under the action of the convex ridges 400 and the screen 200 until they are out of the screen, thereby achieving a screening effect;
[0053] Third, a support rail 600 is added to the bottom of the shaft 300, and the shaft 300 is connected to the support rail 600 through bolts 503 and nuts 601, so that the distance between adjacent shafts 300 can be adjusted at any time without replacing the frame 100.
[0054] The above is a detailed introduction to the instrument supply device provided by the utility model. This article uses specific examples to illustrate the principle and implementation method of the utility model. The description of the above embodiments is only used to help understand the core idea of the utility model. It should be pointed out that for ordinary technicians in this technical field, without departing from the principle of the utility model, the utility model can also be improved and modified, and these improvements and modifications also fall within the scope of protection of the claims of the utility model.
Claims
1. A disc screen, characterized in that: include: frame; A plurality of shafts rotatably connected to the frame, the shafts being arranged in parallel, the shafts being sequentially mounted with a plurality of screens, and driving the screens to rotate so as to convey and screen the materials; Wherein: the shaft is provided with a ridge, the ridge extends along the axial direction of the shaft and protrudes from the outer wall surface of the shaft, and the maximum height of the ridge protruding from the outer wall surface is less than or equal to 1 / 2 of the minimum distance between the side walls of two adjacent shafts.
2. The disc screen according to claim 1, characterized in that: The number of the ridges arranged on the same shaft is greater than or equal to 2, and the ridges are evenly distributed along the circumference of the shaft.
3. The disc screen according to claim 1 or 2, characterized in that: A plurality of convex teeth are formed on the outer periphery of the screen plate, and the number of the convex teeth is ≥8.
4. The disc screen according to claim 1 or 2, characterized in that: The screen is arranged obliquely relative to the central axis of the shaft.
5. The disc screen according to claim 4, characterized in that: The angle between the screen plate and the central axis is α, which is less than or equal to 87°.
6. The disc screen according to claim 5, characterized in that: The screens located on two adjacent shafts are arranged in a staggered manner.
7. The disc screen according to claim 6, characterized in that: The screen plates located at two adjacent axes are inclined in opposite directions.
8. The disc screen according to claim 1 or 2, characterized in that: It also includes a bearing connection seat, and the two ends of the shaft are respectively connected to the frame through the bearing connection seats on the corresponding sides; the bearing connection seat is fixedly connected to the frame.
9. The disc screen according to claim 1 or 2, characterized in that: It also includes a bearing connection seat, which is slidably connected to the frame.
10. The disc screen according to claim 9, characterized in that: The frame includes a support rail, and the bearing connection seat can slide along the support rail; A nut is arranged in the supporting guide rail, and a bolt is arranged in the bearing connection seat. The bottom end of the bolt is located in the supporting guide rail to match with the nut.