A flip-flop screen

Abstract

The utility model relates to a flip -flop screen. This flip -flop screen includes base and screen frame, and screen frame is set up on base through damping spring floatation, is provided with the vibration exciter on screen frame, is provided with fixed beam, floatation beam and screen cloth on screen frame. The mounting seat is provided on the damping spring, and the screen frame is arranged on the mounting seat, the drive motor is equipped on the mounting seat, the motor shaft of drive motor is equipped with driving wheel, and the driven wheel is rotatably arranged on the mounting seat, and the driving wheel and driven wheel are driven through the belt. The first connecting rod is eccentrically hinged on the driven wheel, the end of first connecting rod is hinged with second connecting rod, second connecting rod is hinged with one end of each floatation beam, the other end of each floatation beam is hinged on third connecting rod, the screen frame is equipped with the avoiding hole, and the second connecting rod, third connecting rod and screen frame are hinged with fourth connecting rod and fifth connecting rod. While the screen frame is vibrating, each floatation beam can be driven to move through drive motor and connecting rod mechanism, can better, more large -scale do the action of throwing material, realizes screening.

Description

Technical Field

[0001] This utility model relates to the field of tension sieve technology, specifically to a tension sieve. Background Technology

[0002] The current tension screen mainly consists of a base and a screen frame. The screen frame is floating on the base via shock-absorbing springs, and a vibrator is installed on the screen frame to drive it to generate stable vibration. Fixed beams are fixedly mounted on the screen frame, and floating beams are spring-loaded, allowing for slight relative movement relative to the screen frame. The fixed and floating beams are arranged parallel and alternately, with screen mesh placed between adjacent fixed and floating beams. The screen mesh is typically made of highly elastic and wear-resistant polyurethane. During vibration, relative movement occurs between the screen frame and the floating beams, causing the screen mesh to relax relative to the screen frame, thus throwing the material up.

[0003] The periodic opening and closing of the sieve openings effectively "squeezes" or "sucks" out particles stuck in the sieve, greatly reducing clogging. Therefore, tension screens are frequently used for screening wet materials. However, when screening materials with high moisture content that are prone to accumulation or containing substances that easily clog the sieve openings, existing tension screens still experience material accumulation problems. This necessitates increasing the sieve inclination angle or the vibrator's power. However, increasing the sieve inclination angle leads to shorter screening times and reduced screening efficiency, while excessive vibrator power results in larger vibration amplitudes, making parts prone to loosening and significantly increasing noise. Therefore, a new type of tension screen with a novel structure is needed. Utility Model Content

[0004] The purpose of this invention is to provide a tension screen to solve the aforementioned technical problems existing in the prior art.

[0005] To achieve the above objectives, the present invention provides a tension screen with the following technical solution: A tension screen includes a base and a screen frame. The screen frame is floatingly mounted on the base via shock-absorbing springs. A vibrator is mounted on the screen frame. Fixed beams are fixedly mounted on the screen frame, and floating beams are relatively movable on the screen frame. The floating beams can move relative to the screen frame. The fixed beams and floating beams are parallel and alternately spaced. A screen mesh is provided between any two adjacent fixed beams and floating beams. A mounting seat is provided on the shock-absorbing springs, and the screen frame is mounted on the mounting seat. The mounting seat is equipped with... The screen is equipped with a drive motor, on which a drive wheel is mounted. A driven wheel is rotatably mounted on the mounting base. The drive wheel and the driven wheel are driven by a belt. A first connecting rod is eccentrically hinged to the driven wheel. A second connecting rod is hinged to the end of the first connecting rod. The second connecting rod is hinged to one end of each floating beam. The other end of each floating beam is hinged to a third connecting rod. The screen frame is provided with clearance holes for the ends of each floating beam to move. A fourth connecting rod and a fifth connecting rod are hinged to both the second and third connecting rods. The other ends of the fourth and fifth connecting rods are also hinged to the screen frame.

[0006] The screen frame is hinged to the mounting base at one end near the drive motor, and the other end is connected to the mounting base through a vertical beam. A height adjustment structure is provided between the vertical beam and the screen frame to adjust the angle of the screen frame.

[0007] The height adjustment structure includes multiple bolt holes spaced vertically on the vertical beam, a positioning hole on the screen frame, a locking bolt in the bolt hole, the end of the locking bolt being inserted into the positioning hole, and a fastening nut on the locking bolt.

[0008] The vertical beam is movably mounted on the mounting base via a horizontal adjustment structure.

[0009] The horizontal adjustment structure includes a horizontal guide groove set on the mounting base, a guide block installed in the horizontal guide groove at the lower end of the vertical beam, an elongated hole on the groove wall of the horizontal guide groove, a screw installed movably in the elongated hole on the guide block, and a locking nut on the screw.

[0010] The lower part of the screen frame is provided with a material collection bin, and the bottom of the material collection bin is provided with a discharge port.

[0011] The material discharge port extends downwards to the bottom of the mounting base.

[0012] The beneficial effects of this invention are as follows: Compared with the prior art, while the screen frame vibrates, the driving motor and linkage mechanism can drive the floating beams to move. Each floating beam will swing around the upper hinge axis of the fourth or fifth linkage, allowing the screen to better and more significantly throw up materials, thus achieving better screening. This is more suitable for materials with high moisture content and reduces the likelihood of material accumulation. Furthermore, when it is necessary to increase the material throwing power, the speed of the driving motor can be increased or the driven wheel with a different eccentric position can be replaced, without increasing the power of the vibrator or adjusting the tilt angle of the screen, thus avoiding the consequences of the two adjustment methods mentioned above in the prior art. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the structure of one embodiment of a tension screen according to the present invention; Figure 2 yes Figure 1 A structural diagram from another angle; Figure 3 yes Figure 2 A magnified view of a section at point A in the middle; Figure 4 yes Figure 2 A magnified view of a section at point B in the middle; Figure 5 This is a schematic diagram of the cross-sectional structure of the sieve frame. Detailed Implementation

[0014] To facilitate understanding of this utility model, a more detailed description is provided below with reference to the accompanying drawings and specific embodiments. The accompanying drawings show preferred embodiments of this utility model. However, this utility model can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided to provide a more thorough and complete understanding of the disclosure of this utility model.

[0015] It should be noted that, unless otherwise defined, the technical and scientific terms used in this specification have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The use of "belonging" in this specification is for the purpose of describing particular embodiments only and is not intended to limit the scope of this invention.

[0016] An embodiment of the tension screen of this utility model is as follows: Figures 1-5As shown, the system includes a base 1, on which a mounting seat 3 is mounted via a shock-absorbing spring 2. A screen frame 4 is mounted on the mounting seat 3. A vibrator 8 is mounted on the screen frame 4 to provide stable vibration. Fixed beams 5 are fixedly mounted on the screen frame 4, and floating beams 6 are relatively movable. The floating beams 6 can move relative to the screen frame 4. The fixed beams 5 and floating beams 6 are parallel, spaced apart, and alternately arranged. A screen mesh 7 is placed between any two adjacent fixed beams and floating beams. The screen mesh is made of highly elastic and highly wear-resistant polyurethane material.

[0017] A drive motor 9 is mounted on the mounting base 3. A drive wheel 10 is mounted on the motor shaft of the drive motor 9, and a driven wheel 11 is rotatably mounted on the mounting base. The drive wheel and the driven wheel are driven by a belt 12. A first connecting rod 13 is eccentrically hinged to the driven wheel. A second connecting rod 14 is hinged to the end of the first connecting rod 13. The second connecting rod is hinged to one end of each floating beam, and the other end of each floating beam is hinged to a third connecting rod. The screen frame 4 is provided with clearance holes 17 for the ends of each floating beam 6 to move, so as to realize the movable setting of each floating beam relative to the screen frame. A fourth connecting rod 15 and a fifth connecting rod 16 are hinged to both the second and third connecting rods. The other ends of the fourth connecting rod 15 and the fifth connecting rod 16 are both hinged to the screen frame 4. In other words, the drive motor, through the linkage mechanism consisting of the first, second, third, fourth, and fifth links, can drive each floating beam to swing along the upper hinge axis of the fourth link and the upper hinge axis of the fifth link, thereby realizing the tensioning and relaxing of the screen.

[0018] To allow for adjustable screen angles and a wider screening range, in this embodiment, one end of the screen frame 4 near the drive motor is hinged to the mounting base, and the other end is connected to the mounting base 3 via a vertical beam 18. A height adjustment structure is provided between the vertical beam and the screen frame to adjust the screen frame angle. Specifically, the height adjustment structure includes multiple bolt holes 19 spaced vertically on the vertical beam 188. The screen frame 4 has positioning holes, and locking bolts 20 are installed in the bolt holes 19. The end of the locking bolt is inserted into the positioning hole, and a fastening nut is provided on the locking bolt. Simultaneously, the vertical beam is movably mounted on the mounting base via a horizontal adjustment structure. The horizontal adjustment structure includes a horizontal guide groove 21 on the mounting base 3, a guide block 22 horizontally guided and installed in the horizontal guide groove at the lower end of the vertical beam, an elongated hole 23 on the groove wall of the horizontal guide groove, and a screw 24 movably installed in the elongated hole on the guide block 22. A locking nut 25 is provided on the screw.

[0019] In this embodiment, a material collection bin 26 is provided at the lower part of the screen frame, and a discharge port 27 is provided at the bottom of the material collection bin. The discharge port extends downward to the bottom of the mounting base. The advantage of this arrangement is that it avoids larger particles from the screen falling onto the drive motor and causing damage to the drive motor. It also allows the larger particles to be collected and discharged directly from the discharge port, and prevents the screened material from falling everywhere, making it easier to collect the material.

[0020] During the screening process, the vibrator provides stable vibration to the screen frame. Through the drive motor and linkage mechanism, it drives the floating beam to move relative to the screen frame, thus achieving the tensioning and relaxing of the screen mesh and throwing and screening the material. When it is necessary to increase the material throwing power, the speed of the drive motor can be increased or the driven wheel with a different eccentric position can be replaced. This avoids the consequences of increasing the power of the vibrator or adjusting the tilt angle of the screen mesh, as is the case in existing technologies.

[0021] In the foregoing description of this specification, unless otherwise expressly specified and limited, the terms "fixed," "installed," "connected," or "joined" should be interpreted broadly. For example, the term "joined" can refer to a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; or it can refer to the internal communication of two components or the interaction between two components. Therefore, unless otherwise expressly limited in this specification, those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0022] Based on the above description in this specification, those skilled in the art will also understand that terms used, such as "upper," "lower," "front," "rear," "left," "right," "length," "width," "thickness," "vertical," "horizontal," "top," "bottom," "inner," "outer," "axial," "radial," "circumferential," "center," "longitudinal," "transverse," "clockwise," or "counterclockwise," are terms indicating orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings of this specification. They are only for the purpose of facilitating the explanation of the present invention and simplifying the description, and do not explicitly or implicitly suggest that the device or element involved must have the specific orientation, or be constructed and operated in a specific orientation. Therefore, the above-mentioned orientation or positional relationship terms should not be understood or interpreted as limitations on the present invention.

[0023] Furthermore, the terms "first" or "second," etc., used in this specification to refer to numbers or ordinal numbers are for descriptive purposes only and should not be construed as indicating, explicitly or implicitly, relative importance or specifying the number of indicated technical features. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this specification, "a plurality of" means at least two, such as two, three, or more, unless otherwise explicitly specified.

[0024] In other embodiments of this utility model, the screen frame can also be fixedly mounted on the mounting base, and its angle cannot be adjusted. In this case, the height adjustment structure and the horizontal adjustment structure are omitted. The upper end of the screen frame is welded to the vertical beam, and the lower end of the screen frame is welded to the mounting base.

Claims

1. A tension screen, comprising a base and a screen frame, the screen frame being buoyantly mounted on the base by shock-absorbing springs, a vibrator being mounted on the screen frame, fixed beams being fixedly mounted on the screen frame and floating beams being relatively movable relative to the screen frame, the floating beams being able to move relative to the screen frame, the fixed beams and floating beams being arranged in parallel intervals and alternately, and a screen mesh being provided between any two adjacent fixed beams and floating beams, characterized in that: The shock-absorbing spring is provided with a mounting base, the screen frame is set on the mounting base, the mounting base is provided with a drive motor, the motor shaft of the drive motor is provided with a drive wheel, and the mounting base is rotatably provided with a driven wheel. The drive wheel and the driven wheel are driven by a belt. A first connecting rod is eccentrically hinged to the driven wheel, and a second connecting rod is hinged to the end of the first connecting rod. The second connecting rod is hinged to one end of each floating beam, and the other end of each floating beam is hinged to a third connecting rod. The screen frame is provided with clearance holes for the ends of each floating beam to move. A fourth connecting rod and a fifth connecting rod are hinged to both the second and third connecting rods, and the other ends of the fourth and fifth connecting rods are both hinged to the screen frame.

2. The tension screen according to claim 1, characterized in that: The screen frame is hinged to the mounting base at one end near the drive motor, and the other end is connected to the mounting base through a vertical beam. A height adjustment structure is provided between the vertical beam and the screen frame to adjust the angle of the screen frame.

3. The tension screen according to claim 2, characterized in that: The height adjustment structure includes multiple bolt holes spaced vertically on the vertical beam, a positioning hole on the screen frame, a locking bolt in the bolt hole, the end of the locking bolt being inserted into the positioning hole, and a fastening nut on the locking bolt.

4. The tension screen according to claim 2 or 3, characterized in that: The vertical beam is movably mounted on the mounting base via a horizontal adjustment structure.

5. The tension screen according to claim 4, characterized in that: The horizontal adjustment structure includes a horizontal guide groove set on the mounting base, a guide block installed in the horizontal guide groove at the lower end of the vertical beam, an elongated hole on the groove wall of the horizontal guide groove, a screw installed movably in the elongated hole on the guide block, and a locking nut on the screw.

6. The tension screen according to claim 1, characterized in that: The lower part of the screen frame is provided with a material collection bin, and the bottom of the material collection bin is provided with a discharge port.

7. The tension screen according to claim 6, characterized in that: The material discharge port extends downwards to the bottom of the mounting base.

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