Elliptical bar flip-flow screen

Abstract

The utility model relates to the technical field of screening equipment, and discloses an oval bar flip-flow screen which comprises a base plate and further comprises a fixed screen frame, the fixed screen frame is obliquely arranged above the base plate through a spring seat, bar screens and flip-flow screens are arranged in the fixed screen frame, a plurality of sets of bar screens are adjustably arranged above the flip-flow screens in a step shape, and the flip-flow screens are arranged on the base plate. The flip-flow screen comprises a screen mesh, fixed cross beams and movable cross beams, the fixed cross beams and the movable cross beams are sequentially arranged at intervals in a staggered mode, the two ends of the fixed cross beams are fixedly connected with the fixed screen frame, the two ends of the movable cross beams are arranged on the fixed screen frame through floating devices, and the screen mesh is arranged on the fixed cross beams and the movable cross beams. By the adoption of the double-layer screen face, stable and efficient screening can be achieved, maintenance can be facilitated, and the screening efficiency and the using effect are effectively improved.

Description

Technical Field

[0001] The utility model relates to the technical field of screening equipment, in particular to an elliptical bar relaxation screen. Background Art

[0002] Vibrating screens are essential equipment in mining and non-metallic mineral production operations, where output and screening efficiency are particularly important. However, most vibrating screens, especially when screening fine materials, suffer from incomplete screening and screen clogging, resulting in product quality that falls short of customer expectations. Consequently, the use of flap screens is increasing. Due to their dual-vibration principle, flap screens generate greater vibration intensity and offer higher screening efficiency.

[0003] In order to better withstand the impact of various raw materials with complex components, different sizes and weights, the existing relaxation screens usually combine multiple screen surfaces. For example, the Chinese invention patent application with application publication number CN118080334A discloses a combined relaxation screen, including a screen box body, a feed hopper at one end of the screen box body and a discharge port at the other end, a top screen mesh is provided in the screen box body, the top screen mesh includes a plurality of combined screen plate assemblies with a certain height difference and arranged in a stepped shape from the feed hopper to the discharge port, and three layers of screen surface are provided on the combined screen plate assembly, the three layers of screen surface include a rod screen surface, a mesh screen surface and a relaxation screen surface, which are spaced in sequence from top to bottom and arranged obliquely downward from the feed hopper to the discharge port, and the discharge end of the relaxation screen surface on the combined screen plate assembly is connected to the feed end of the rod screen surface on the next adjacent combined screen plate assembly.

[0004] There are at least the following problems in the existing technology: first, the overall structure is complex, the top screen includes multiple combined screen plate assemblies, and the production cost is high; second, the subsequent maintenance cost is high, the number of combined screen plate assemblies is large, and the number of screen surface layers of a single combined screen plate assembly is also large, which further increases the maintenance cost. Utility Model Content

[0005] Aiming at the deficiencies of the prior art, the utility model develops an elliptical bar relaxation screen. The utility model adopts a double-layer screen surface, which can not only stably and efficiently screen, but also facilitate maintenance, thereby effectively improving the screening efficiency and use effect.

[0006] The technical solution of the utility model to solve the technical problem is: an elliptical rod relaxation screen, including a chassis and a fixed screen frame, the fixed screen frame is tilted and arranged above the chassis through a spring seat, a rod screen and a relaxation screen are arranged inside the fixed screen frame, a plurality of groups of rod screens are adjustably arranged in a stepped manner above the relaxation screen, the relaxation screen includes a screen, a fixed beam and a movable beam, the fixed beam and the movable beam are arranged in sequence with staggered intervals, both ends of the fixed beam are fixedly connected to the fixed screen frame, both ends of the movable beam are arranged on the fixed screen frame through a floating device, and the screen is arranged on the fixed beam and the movable beam.

[0007] As an optimization, the screen includes several groups of screen plates and screen plate brackets. Adjacent groups of screen plates are connected to each other through the screen plate brackets, and several groups of screen plate brackets are respectively arranged on the top of the fixed crossbeam and the top of the movable crossbeam through mounting bolts. By setting the screen plates and screen plate brackets, a complete screen is formed, and adjacent screen plates can realize the relaxation and tension movement under the action of the fixed crossbeam and the movable crossbeam, and it is convenient for installation.

[0008] As an optimization, clamping blocks are provided at both ends of the screen plate, a clamping groove is provided at the top of the screen plate bracket, adjacent two groups of clamping blocks are placed in the same group of clamping grooves, a counterbore is provided at the bottom of the clamping groove, and a mounting bolt is provided in the counterbore. By setting the clamping blocks and the clamping grooves, it is convenient to install the screen plates and prevent the screen plates from coming off; by setting the counterbore and the mounting bolt, it is convenient to install the screen plate brackets and they will not become loose under the action of the clamping blocks.

[0009] As an optimization, the floating device includes an upper pressing angle steel, a floating channel steel, a lower pressing angle steel and a shear spring. The upper pressing angle steel and the lower pressing angle steel are fixedly arranged on the side plates of the fixed screen frame. Several groups of floating channels are provided on the side plates of the fixed screen frame, connectors are provided in the floating channels, the movable crossbeam is connected to the floating channel steel through the connectors, and the floating channel steel is connected to the upper pressing angle steel and the lower pressing angle steel respectively through the shear springs. By setting the upper pressing angle steel, the lower pressing angle steel and the shear spring, the vibration range of the floating channel steel and the movable crossbeam can be limited, the amplitude of the floating channel steel can be prevented from being too large, and the floating channel steel can be assisted to vibrate; by setting the floating channel steel, the floating channels and the connectors, the movable crossbeam can move relative to the fixed screen frame.

[0010] As an optimization, a vibrator is further provided on the fixed screen frame, an elastic mounting seat is provided on the chassis, a driving motor is provided on the elastic mounting seat, and the output end of the driving motor is connected to the vibrator through a transmission device. By setting the driving motor and the transmission device, the vibrator can be driven to work; by setting the vibrator, the fixed screen frame can be driven to vibrate along an elliptical track, and the vibration angle is 30° to 60°; by setting the elastic mounting seat, the maintenance is simple, safe and reliable.

[0011] As an optimization, the bar screen includes screen pins, a screen pin beam, a fixing frame, mounting angle steels and mounting plates. Several groups of screen pins are evenly and detachably arranged on the screen pin beam. End heads at both ends of the screen pin beam are provided with mounting plates, the mounting plates are connected to the fixing frame, and the fixing frame is connected to the fixed screen frame through the mounting angle steels. By setting the screen pins, the raw materials can be screened; by setting the screen pin beam, the screen pins can be installed, and it is convenient to separately disassemble and assemble the screen pins, reducing the maintenance cost; by setting the mounting plates and the fixing frame, it is convenient to separately disassemble and assemble the screen pin beam, reducing the maintenance cost; by setting the mounting angle steels, it is convenient to install the fixing frame on the fixed screen frame.

[0012] As an optimization, one end of the mounting plate is connected to the fixing frame through a positioning bolt, and the other end of the mounting plate is connected to the fixing frame through an adjusting bolt. A number of groups of adjusting holes are provided at the other end of the mounting plate, and the adjusting bolt is arranged in the adjusting hole. By providing the positioning bolt, the adjusting bolt and the adjusting hole, the angle of the bar screen can be adjusted, and it can be adjusted according to different raw materials and on-site screening conditions, improving the screening efficiency, and the quality of the screened materials is better and more competitive.

[0013] As an optimization, two adjacent groups of bar screens cooperate with each other, and the screen rods of one group of bar screens are arranged above the screen rod beam of the adjacent group of bar screens. This can ensure that the raw materials are fully screened.

[0014] Compared with the prior art, the utility model has the following beneficial effects:

[0015] By providing the chassis, the sieve frame can be supported; by providing the fixed sieve frame, the raw materials can be double-screened by driving the bar screen and the relaxation screen; by providing the spring seat, the fixed sieve frame can be supported, so that the fixed sieve frame is inclined for convenient screening of raw materials, and the fixed sieve frame can be buffered, effectively reducing vibration and noise; by providing the bar screen and the relaxation screen, double screening can be carried out. The bar screen can screen larger materials, and the screened materials fall onto the relaxation screen for secondary screening. Moreover, the bar screen and the relaxation screen are independent of each other, which is convenient for maintenance; by providing the screen mesh, the raw materials can be screened; by providing the fixed cross beam, it can vibrate along with the fixed sieve frame; by providing the floating device and the movable cross beam, the movable cross beam can make a reciprocating motion relative to the fixed sieve frame and the fixed cross beam, so that the screen mesh achieves the motion effect of one expansion and one relaxation, is not easy to be blocked, and improves the screening efficiency and effect for wet fine-grained raw materials. The utility model adopts a double-layer screen surface, which can not only screen stably and efficiently, but also be convenient for maintenance, effectively improving the screening efficiency and service effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is the front view of an embodiment of the utility model.

[0017] Figure 2 It is the cross-sectional view of the internal structure of the fixed sieve frame in an embodiment of the utility model.

[0018] Figure 3 It is Figure 2 The partial enlarged view of area A in

[0019] Figure 4 It is the exploded view of the movable cross beam, the joint and the floating channel steel in an embodiment of the utility model.

[0020] Figure 5 It is the structural diagram of the bar screen in an embodiment of the utility model.

[0021] In the figure: 1, chassis; 2, floating device; 3, fixed sieve frame; 4, spring seat; 5, bar sieve; 6, relaxation sieve; 7, joint; 8, vibrator; 9, elastic mounting seat; 10, drive motor; 11, transmission device;

[0022] 21, upper pressing angle steel; 22, floating channel steel; 23, lower pressing angle steel; 24, shear spring;

[0023] 51, sieve bar; 52, sieve bar beam; 53, fixing frame; 54, mounting angle steel; 55, mounting plate;

[0024] 61, sieve mesh; 62, fixed cross beam; 63, movable cross beam;

[0025] 611, sieve plate; 612, sieve plate support; 613, clamping block; 614, clamping groove. Specific embodiments

[0026] In order to clearly illustrate the technical features of this solution, the present invention will be described in detail below through specific embodiments and in conjunction with its accompanying drawings.

[0027] Embodiment 1

[0028] Figures 1 to 5 This is an embodiment of the present invention. As Figures 1 to 5 shown, an elliptical bar relaxation sieve includes a chassis 1, and is characterized in that: it further includes a fixed sieve frame 3. The fixed sieve frame 3 is inclined and arranged above the chassis 1 through a spring seat 4. The spring seat 4 includes a support, a rubber spring, a rubber plate and a bracket. The fixed sieve frame 3 is arranged on the support. The support is arranged on the top of the rubber spring through a mounting plate. The bottom of the rubber spring is arranged on the bracket through a mounting plate. The rubber spring can effectively reduce vibration and noise. The bracket is arranged on the chassis 1. The two ends of the two groups of mounting plates are connected to each other through a rubber plate. The rubber plate can reduce the impact on the fixed sieve frame 3 during startup and shutdown. Inside the fixed sieve frame 3, there are a bar sieve 5 and a relaxation sieve 6. Several groups of bar sieves 5 are arranged in a stepped and adjustable manner above the relaxation sieve 6. The relaxation sieve 6 includes a sieve mesh 61, a fixed cross beam 62 and a movable cross beam 63. The fixed cross beam 62 and the movable cross beam 63 are arranged alternately and at intervals in sequence. The two ends of the fixed cross beam 62 are fixedly connected to the fixed sieve frame 3. The two ends of the movable cross beam 63 are arranged on the fixed sieve frame 3 through a floating device 2. The sieve mesh 61 is arranged on the fixed cross beam 62 and the movable cross beam 63.

[0029] By setting the chassis 1, the fixed sieve frame 3 can be supported and fixed; by setting the fixed sieve frame 3, the bar screen 5 and the relaxation sieve 6 can be driven to double-screen the raw materials; by setting the spring seat 4, the fixed sieve frame 3 can be supported, so that the fixed sieve frame 3 is inclined to facilitate screening of the raw materials, and can buffer the fixed sieve frame 3, effectively reducing vibration and noise; by setting the bar screen 5 and the relaxation sieve 6, double screening can be carried out. The bar screen 5 can screen larger materials, and the screened materials fall onto the relaxation sieve 6 for secondary screening; by setting the screen mesh 61, the raw materials can be screened; by setting the fixed cross beam 62, it can vibrate following the fixed sieve frame 3; by setting the floating device 2 and the movable cross beam 63, the movable cross beam 63 can reciprocate relative to the fixed sieve frame 3 and the fixed cross beam 62, so that the screen mesh 61 achieves the movement effect of one relaxation and one tension, is not easy to be blocked, and improves the screening efficiency and effect of wet fine-grained raw materials.

[0030] As Figures 2 to 4 shown, the screen mesh 61 includes several groups of screen sheets 611 and several groups of screen sheet brackets 612. Adjacent two groups of screen sheets 611 are connected to each other through the screen sheet brackets 612. Several groups of screen sheet brackets 612 are respectively arranged on the top of the fixed cross beam 62 and the top of the movable cross beam 63 through mounting bolts. By setting the screen sheets 611 and the screen sheet brackets 612, a complete screen mesh 61 is formed, and adjacent screen sheets 611 can achieve relaxation and tension movement under the action of the fixed cross beam 62 and the movable cross beam 63, and it is convenient for installation.

[0031] As Figure 2 and Figure 3 shown, clamping blocks 613 are provided at both ends of the screen sheet 611, and a clamping groove 614 is provided at the top of the screen sheet bracket 612. The clamping groove 614 is a dovetail groove. Adjacent two groups of clamping blocks 613 are placed in the same group of clamping grooves 614. A counterbore is provided at the bottom of the clamping groove 614, and a mounting bolt is provided in the counterbore. By setting the clamping blocks 613 and the clamping grooves 614, it is convenient to install the screen sheet 611, convenient for disassembly and maintenance, and the damaged screen sheet 611 can be replaced separately. After the two groups of clamping blocks 613 are closely attached, a dovetail tenon can be formed, which is matched with the clamping groove 614, and can prevent the screen sheet 611 from coming out; by setting the counterbore and the mounting bolt, it is convenient to install the screen sheet bracket 612, and it will not become loose under the action of the clamping blocks 613.

[0032] As Figure 1 、 Figure 2 and Figure 4As shown in the figure, the floating device 2 includes an upper pressing angle steel 21, a floating channel steel 22, a lower pressing angle steel 23 and a shear spring 24. The upper pressing angle steel 21 and the lower pressing angle steel 23 are fixedly arranged on the side plates of the fixed sieve frame 3. A number of groups of floating channels 31 penetrate through the side plates of the fixed sieve frame 3 between the upper pressing angle steel 21 and the lower pressing angle steel 23. A joint 7 is arranged in the floating channel 31. The end of the movable cross beam 63 is connected to the floating channel steel 22 through the joint 7. The floating channel steel 22 is arranged between the upper pressing angle steel 21 and the lower pressing angle steel 23. The floating channel steel 22 is connected to the upper pressing angle steel 21 and the lower pressing angle steel 23 respectively through the shear spring 24. By arranging the upper pressing angle steel 21, the lower pressing angle steel 23 and the shear spring 24, the vibration range of the floating channel steel 22 and the movable cross beam 63 can be limited, the amplitude of the floating channel steel 22 can be prevented from being too large, and the floating channel steel 22 can be assisted to vibrate; by arranging the floating channel steel 22, the floating channels 31 and the joint 7, the movable cross beam 63 can move relative to the fixed sieve frame 3.

[0033] As Figure 1 shown in the figure, a vibrator 8 is further arranged on the fixed sieve frame 3. The vibrator 8 is a three-axis elliptical vibrator. An elastic mounting seat 9 is arranged on the chassis 1. A driving motor 10 is arranged on the elastic mounting seat 9. The output end of the driving motor 10 is connected to the vibrator 8 through a transmission device 11. The transmission device 11 is a belt transmission device. By arranging the driving motor 10 and the transmission device 11, the vibrator 8 can be driven to work, and the belt of the belt transmission device can be automatically tensioned, with simple maintenance, safety and reliability; by arranging the vibrator 8, the fixed sieve frame 3 can be driven to vibrate in an elliptical trajectory, and the vibration angle is 30° - 60°; by arranging the elastic mounting seat 9, the maintenance is simple, safe and reliable.

[0034] As Figure 2 and Figure 5 shown in the figure, the bar screen 5 includes screen pins 51, a screen pin beam 52, a fixed frame 53, mounting angle steels 54 and mounting plates 55. A number of groups of screen pins 51 are evenly and detachably arranged on the screen pin beam 52. End heads at both ends of the screen pin beam 52 are provided with mounting plates 55. The mounting plates 55 are connected to the fixed frame 53. The fixed frame 53 is connected to the fixed sieve frame 3 through the mounting angle steels 54. By arranging the screen pins 51, the raw materials can be screened; by arranging the screen pin beam 52, the screen pins 51 can be installed, and the screen pins 51 can be conveniently disassembled and assembled individually, reducing the maintenance cost; by arranging the mounting plates 55 and the fixed frame 53, the screen pin beam 52 can be conveniently disassembled and assembled individually, reducing the maintenance cost; by arranging the mounting angle steels 54, the fixed frame 53 can be conveniently installed on the fixed sieve frame 3.

[0035] As Figure 2 and Figure 5As shown, one end of the mounting plate 55 is connected to the fixing frame 53 through a positioning bolt, and the other end of the mounting plate 55 is connected to the fixing frame 53 through an adjusting bolt. A number of groups of adjusting holes are provided at the other end of the mounting plate 55, and the adjusting bolt is arranged in the adjusting hole. By providing the positioning bolt, the adjusting bolt and the adjusting hole, the angle of the bar screen 5 can be adjusted, and it can be adjusted according to different raw materials and on-site screening conditions, improving the screening efficiency, and the quality of the screened material is better and more competitive.

[0036] As Figure 2 and Figure 5 shown, two adjacent groups of bar screens 5 cooperate with each other, and the screen rods 51 of one group of bar screens 5 are arranged above the screen rod beam 52 of the adjacent group of bar screens 5. It can ensure that the raw materials are fully screened.

[0037] During use, the driving motor 10 drives the vibrator 8 to vibrate through the transmission device 11, and the vibrator 8 drives the fixed screen frame 3 to vibrate in an elliptical trajectory, and the vibration angle is 30° - 60°. The raw materials enter from the feeding end of the fixed screen frame 3, and the higher end of the fixed screen frame 3 is the feeding end; after the materials are screened by the bar screen 5, the larger materials move along the stepped bar screen 5 towards the discharge port, and the screened materials fall onto the relaxation screen 6 for secondary screening. Under the action of the vibrator 8, the movable cross beam 63 reciprocates relative to the fixed screen frame 3 and the fixed cross beam 62, and drives the floating channel steel 22 to reciprocate between the upper pressing angle steel 21 and the lower pressing angle steel 23, so that the adjacent screen plates 611 can achieve relaxation movement between the fixed cross beam 62 and the movable cross beam 63, and perform secondary screening on the materials. The double-layer screen surface of the present utility model can not only screen stably and efficiently, but also be convenient for maintenance, effectively improving the screening efficiency and the use effect.

[0038] In the present utility model, the description of the orientation or relative position relationship of the structure, such as "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicates the orientation or relative position relationship based on the orientation or position relationship shown in the drawings, and is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the structure referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation to the present utility model.

Claims

1. An elliptical bar relaxation sieve, comprising a chassis (1), characterized in that: It further includes a fixed screen frame (3). The fixed screen frame (3) is inclined and arranged above the chassis (1) through a spring seat (4). Inside the fixed screen frame (3), there are bar screens (5) and a relaxation screen (6). Several groups of bar screens (5) are arranged in a stepped and adjustable manner above the relaxation screen (6). The relaxation screen (6) includes a screen mesh (61), a fixed cross beam (62), and a movable cross beam (63). The fixed cross beam (62) and the movable cross beam (63) are arranged alternately and at intervals in sequence. The two ends of the fixed cross beam (62) are fixedly connected to the fixed screen frame (3). The two ends of the movable cross beam (63) are arranged on the fixed screen frame (3) through a floating device (2). The screen mesh (61) is arranged on the fixed cross beam (62) and the movable cross beam (63).

2. The elliptical bar relaxation sieve according to claim 1, characterized in that: The screen mesh (61) includes several groups of screen plates (611) and screen plate brackets (612). Adjacent two groups of screen plates (611) are connected to each other through the screen plate brackets (612). Several groups of screen plate brackets (612) are respectively arranged on the tops of the fixed cross beam (62) and the movable cross beam (63) through mounting bolts.

3. The elliptical bar relaxation sieve according to claim 2, characterized in that: Both ends of the screen plate (611) are provided with clamping blocks (613). The top of the screen plate bracket (612) is provided with a clamping groove (614). Adjacent two groups of clamping blocks (613) are placed in the same group of clamping grooves (614). The bottom of the clamping groove (614) is provided with a counterbore, and a mounting bolt is arranged in the counterbore.

4. The elliptical bar relaxation sieve according to claim 3, characterized in that: The floating device (2) includes an upper pressing angle steel (21), a floating channel steel (22), a lower pressing angle steel (23), and a shear spring (24). The upper pressing angle steel (21) and the lower pressing angle steel (23) are fixedly arranged on the side plates of the fixed screen frame (3). There are several groups of floating channels (31) on the side plates of the fixed screen frame (3). A joint (7) is arranged in the floating channel (31). The movable cross beam (63) is connected to the floating channel steel (22) through the joint (7). The floating channel steel (22) is connected to the upper pressing angle steel (21) and the lower pressing angle steel (23) respectively through the shear spring (24).

5. The elliptical bar relaxation sieve according to claim 4, characterized in that: A vibrator (8) is also arranged on the fixed screen frame (3). An elastic mounting seat (9) is arranged on the chassis (1). A driving motor (10) is arranged on the elastic mounting seat (9). The output end of the driving motor (10) is connected to the vibrator (8) through a transmission device (11).

6. The elliptical bar relaxation sieve according to any one of claims 1 to 5, characterized in that: The bar screen (5) includes screen pins (51), screen pin beams (52), fixed frames (53), mounting angle steels (54), and mounting plates (55). Several groups of screen pins (51) are evenly and detachably arranged on the screen pin beams (52). End heads at both ends of the screen pin beam (52) are provided with mounting plates (55). The mounting plates (55) are connected to the fixed frames (53). The fixed frames (53) are connected to the fixed screen frame (3) through the mounting angle steels (54).

7. The elliptical bar relaxation sieve according to claim 6, characterized in that: One end of the mounting plate (55) is connected to the fixed frame (53) through a positioning bolt. The other end of the mounting plate (55) is connected to the fixed frame (53) through an adjusting bolt. Several groups of adjusting holes are arranged at the other end of the mounting plate (55). The adjusting bolt is arranged in the adjusting hole.

8. The elliptical bar relaxation sieve according to claim 6, characterized in that: Adjacent two groups of bar screens (5) cooperate with each other. The screen pins (51) of one group of bar screens (5) are arranged above the screen pin beams (52) of the adjacent group of bar screens (5).

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