Horizontal reciprocating type screening machine

Abstract

The utility model belongs to the technical field of screening machinery, and discloses a horizontal reciprocating type screening machine which comprises a screening box and a screening bed horizontally arranged in the screening box, a plurality of cross beams perpendicular to the length direction of the screening box are arranged at the top of the screening box at intervals, and the screening bed is hung below the cross beams through a plurality of sets of rocker arms. The connecting end of the rocker arm and the screening bed is located on the side, deviating from the discharging direction, of the connecting end of the rocker arm and the cross beam, a driving assembly for driving the screening bed to reciprocate is arranged on the side, located at the feeding end of the screening bed, of the screening box, and a feeding hopper is arranged at the top of the screening box and located above the feeding end of the screening bed. The screening bed is horizontally arranged, so that the height of equipment is effectively reduced, the size of the equipment is reduced, the manufacturing difficulty is reduced, and the equipment cost is reduced; the rocker arm is arranged in an inclined mode, an inclined upward force is applied to the screening bed, materials are forced to be thrown up at the moment of making contact with the screen cloth, the materials rapidly advance forwards in an overturning and rolling even jumping mode, production efficiency is greatly improved, and the probability that the screen cloth on the screening bed is blocked is reduced.

Description

Technical Field

[0001] This utility model relates to the field of screening machinery technology, and in particular to a horizontal reciprocating screening machine. Background Technology

[0002] Reciprocating screens, also known as planar motion screens or shaking screens, are characterized by their simple structure, reliable performance, large screening capacity, and economical use. They mainly consist of a frame, a boom, a screen bed, screen mesh, and a drive mechanism. During installation, the frame is fixed to a precast concrete or steel structure material sorting bin. The screen bed is suspended from the frame by the boom at a certain angle, with one end connected to an eccentric shaft via a connecting rod. Its working principle is based on using a motor to drive the eccentric shaft to rotate. The connecting rod converts the rotational motion of the eccentric shaft into the reciprocating linear motion of the screen body. Then, utilizing the material's own weight and the installation angle of the screen bed, the material is discharged sequentially from fine to coarse through the screen mesh, thus achieving the purpose of material screening.

[0003] In existing technologies, reciprocating screen beds are all installed at an incline, with the inclination angle set according to the type of material. For sand and gravel screening machines, the inclination angle is typically set between 5-15°. Because materials slide towards the lower end of the inclined reciprocating screen, if the material flow rate is too high or the material layer is too thick, smaller particles in the upper layer will be blocked by larger particles in the lower layer and cannot fall and be selected in time, thus affecting the screening effect and finished product quality, leading to a decrease in output. Furthermore, the inclination angle increases the difficulty of manufacturing the screening machine, lengthens the manufacturing period, and increases production costs. Different screening raw materials require different inclination angles, preventing the equipment from being modularized, standardized, and mass-produced, further increasing manufacturing difficulty and production costs. Utility Model Content

[0004] To solve the above problems, this utility model provides a horizontal reciprocating screening machine.

[0005] The above-mentioned technical objective of this utility model is achieved through the following technical solution: a horizontal reciprocating screening machine, including a screen box and a screen bed horizontally arranged inside the screen box. Several crossbeams perpendicular to the length direction are arranged at intervals on the top of the screen box. The screen bed is suspended below the crossbeams by several sets of rocker arms. The connection end of the rocker arm and the screen bed is located on the side of the connection end of the rocker arm and the crossbeam that is biased towards the discharge direction. A drive assembly for driving the screen bed to reciprocate is provided on the side of the screen box located at the feed end of the screen bed. A feed hopper is provided on the top of the screen box above the feed end of the screen bed.

[0006] By adopting the above technical solution, the screen bed is arranged horizontally inside the screen box, eliminating the need to consider the tilt angle. This effectively reduces the height and size of the equipment, while also lowering the manufacturing difficulty and cost, enabling large-scale production and expanding its applicability. Positioning the connection between the rocker arm and the screen bed at the end opposite the discharge direction of the connection between the rocker arm and the crossbeam allows the rocker arm to initially tilt, applying an upward force to the screen bed. When the drive assembly propels the screen bed in reciprocating motion, the material is forced to be thrown up upon contact with the screen, moving forward rapidly by tumbling, rolling, or even jumping, rather than slowly sliding on the screen bed. This continuous up-and-down movement of the material on the screen bed not only significantly improves production efficiency but also reduces the likelihood of screen clogging.

[0007] Furthermore, the screen beds are arranged in several groups side by side, and the bottom of the crossbeam is provided with several first hinge seats along its length. The two sides of the screen bed are provided with second hinge seats on the side of the crossbeam facing the discharge direction. The two ends of the rocker arm are respectively hinged to the first hinge seats and the second hinge seats.

[0008] By adopting the above technical solution, a first hinge seat and a second hinge seat are set up to facilitate the connection between the rocker arm and the crossbeam and the screen bed.

[0009] Furthermore, the drive assembly includes two transmission seats disposed at the feed ends of the two sets of screen beds. A transmission shaft perpendicular to the length direction of the screen box is horizontally rotatably disposed within the transmission seat. An eccentric wheel is disposed on the transmission shaft. A baffle is disposed at the feed end of the screen bed. A connecting seat is disposed on the side of the baffle adjacent to the drive assembly. A reciprocating arm is disposed between the connecting seat and the transmission seat. One end of the reciprocating arm is rotatably sleeved on the eccentric wheel, and the other end is rotatably connected to the connecting seat. A driven pulley is disposed outside the transmission seat at the outer end of the transmission shaft. A drive motor is disposed at the top of the screen box. A drive pulley is disposed on the output shaft of the drive motor. The drive pulley and the driven pulley are connected by a synchronous belt.

[0010] By adopting the above technical solution, a transmission seat, transmission shaft, eccentric wheel, baffle, connecting seat, reciprocating arm, driven pulley, drive motor, driving pulley, and synchronous belt are set up. The drive motor drives the driving pulley to rotate, which drives the driven pulley and transmission shaft to rotate via the synchronous belt. The rotation is converted into the reciprocating motion of the reciprocating arm via the eccentric wheel, thereby driving the screen bed to reciprocate.

[0011] Furthermore, the inner ends of the two drive shafts extend out of the drive seat and are connected by a coupling.

[0012] By adopting the above technical solution, a coupling is set to connect the two drive shafts together, realizing the synchronous movement of the two drive shafts and saving investment in drive components.

[0013] Furthermore, the bottom of the transmission seat is provided with a mounting flange, the mounting flange is provided with several bolt holes, and the bottom of the screen box is provided with several strip-shaped connecting holes corresponding to the bolt holes, the length direction of the strip-shaped connecting holes being perpendicular to the width direction of the screen box.

[0014] By adopting the above technical solution, bolt holes and strip-shaped connecting holes are set for the installation of the transmission seat and the bottom of the screen box. The length direction of the strip-shaped connecting holes is arranged perpendicular to the width direction of the screen box, which can be used to adjust the installation position of the transmission seat, thereby adjusting the tilt angle of the rocker arm to meet the operating requirements of different materials.

[0015] Furthermore, a top plate is also provided on the top of the screen box above the screen bed.

[0016] By adopting the above technical solution, a top plate is installed above the screen bed at the top of the screen box to seal the top of the screen box, which can effectively prevent dust from overflowing.

[0017] In summary, this utility model has the following beneficial effects: In this application, by arranging the screen bed horizontally inside the screen box, the issue of tilt angle does not need to be considered, which can effectively reduce the height and volume of the equipment, while also reducing the difficulty of the manufacturing process and the cost of the equipment, enabling the equipment to be mass-produced and expanding its application range; by placing the connection end of the rocker arm and the screen bed on the side of the discharge direction of the connection end between the rocker arm and the crossbeam, the rocker arm is initially tilted, giving the screen bed an upward force. Thus, when the drive assembly drives the screen bed to reciprocate, the material is forced to be thrown up at the moment of contact with the screen, moving forward quickly in a tumbling, rolling, or even jumping manner, rather than slowly sliding on the screen bed. Therefore, the material on the screen bed is constantly tumbling up and down, which not only greatly improves production efficiency but also reduces the probability of screen clogging on the screen bed. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of an embodiment of the present utility model;

[0019] Figure 2 This is a schematic diagram of the structure after the top plate is hidden in an embodiment of this utility model;

[0020] Figure 3 This is a structural schematic diagram of an embodiment of the present invention to highlight the driving component portion;

[0021] Figure 4 This is a structural schematic diagram of an embodiment of the present invention to highlight the installation parts of the transmission seat and the screen box;

[0022] Figure 5 This is a cross-sectional structural diagram of the transmission seat according to an embodiment of the present utility model.

[0023] In the diagram: 10. Screen box; 11. Crossbeam; 12. Feed hopper; 13. First hinge seat; 14. Top plate; 15. Strip connecting hole; 20. Screen bed; 21. Second hinge seat; 22. Baffle; 23. Connecting seat; 30. Rocker arm; 40. Drive assembly; 41. Transmission seat; 411. Mounting flange; 412. Bolt hole; 42. Drive shaft; 43. Eccentric wheel; 44. Reciprocating arm; 45. Driven pulley; 46. Drive motor; 47. Driving pulley; 48. Synchronous belt; 49. Coupling. Detailed Implementation

[0024] The technical solutions in the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the scope of protection of this application.

[0025] like Figure 1-5 As shown in the illustration, this application discloses a horizontal reciprocating screening machine, including a screen box 10 and a screen bed 20. The screen box 10 is a rectangular box-frame structure with an open bottom, used for installation on a civil engineering foundation. Multiple finished product classification bins are continuously arranged below it to receive materials after screening. A top plate 14 is provided on the top of the screen box 10 above the screen bed 20 to seal the top of the screen box 10, effectively preventing dust from spilling out during screening and protecting the working environment. A feed hopper 12 is provided on the top of the screen box 10 above the feed end of the screen bed 20 for feeding materials into the screen bed 20. The screen bed 20 is horizontally arranged inside the screen box 10 for screening materials. It has several sets of screen holes, the diameter of which gradually increases from the feed end to the discharge end. Each set of screen holes corresponds to one or more finished product classification bins, so that the material is screened and falls into the corresponding finished product classification bin as it travels on the screen bed 20.

[0026] The top of the screen box 10 is arranged with several crossbeams 11 perpendicular to its length. Several sets of screen beds 20 are arranged side by side, preferably two or three sets. The screen beds 20 are suspended below the crossbeams 11 by several sets of rocker arms 30. The connection end of the rocker arm 30 with the screen bed 20 is located on the side of the discharge direction of the connection end of the rocker arm 30 with the crossbeam 11, so that the rocker arm 30 is arranged forward at an angle. This can give the screen bed 20 an upward force in the initial state, so that when the screen bed 20 is driven horizontally, it can force the material to be thrown up at the moment of contact with the screen, and move forward quickly in a tumbling, rolling or even jumping manner, instead of slowly sliding on the screen bed 20. Therefore, the material on the screen bed 20 is constantly tumbling up and down, which not only greatly improves the production efficiency, but also reduces the probability of screen clogging on the screen bed 20.

[0027] Specifically, the crossbeam 11 is made of a square steel tube with an open bottom. Several first hinge seats 13 are arranged along its length at the bottom. The number of first hinge seats 13 on each crossbeam 11 is twice the number of screen beds 20, meaning two first hinge seats 13 correspond to one screen bed 20. Second hinge seats 21 are arranged on both sides of the screen bed 20 on the side of the crossbeam 11 closest to the discharge direction. The two ends of the rocker arm 30 are hinged to the first hinge seats 13 and the second hinge seats 21, respectively.

[0028] A drive assembly 40 is provided on the feed end side of the screen box 10 located on the screen bed 20. The drive assembly 40 is used to drive the screen bed 20 to reciprocate. Specifically, the drive assembly 40 includes two transmission seats 41 disposed at the feed ends of the two sets of screen beds 20. A transmission shaft 42 perpendicular to the length direction of the screen box 10 is horizontally rotatably disposed within the transmission seat 41. An eccentric wheel 43 is disposed on the transmission shaft 42. A baffle 22 is provided at the feed end of the screen bed 20. A connecting seat 23 is disposed on the side of the baffle 22 adjacent to the drive assembly 40. A reciprocating arm 44 is disposed between the connecting seat 23 and the transmission seat 41. One end of the reciprocating arm 44 is rotatably sleeved on the eccentric wheel 43, and the other end is rotatably connected to the connecting seat 23. The rotation of the drive shaft 42 drives the eccentric wheel 43 to rotate. Since the two ends of the reciprocating arm 44 are rotatably connected to the eccentric wheel 43 and the connecting seat 23, the rotation of the eccentric wheel 43 drives the reciprocating arm 44 to reciprocate, thereby carrying the baffle 22 and the screen bed 20 to reciprocate. In this way, the rotation of the drive shaft 42 can be converted into the reciprocating motion of the reciprocating arm 44, realizing the reciprocating drive of the screen bed 20.

[0029] A driven pulley 45 is provided outside the transmission seat 41 at the outer end of the transmission shaft 42. A drive motor 46 is provided at the top of the screen box 10. A drive pulley 47 is provided on the output shaft of the drive motor 46. The drive pulley 47 and the driven pulley 45 are connected by a synchronous belt 48. The drive motor 46 drives the drive pulley 47 to rotate, which in turn drives the driven pulley 45 and the transmission shaft 42 to rotate via the synchronous belt 48. The inner ends of the two transmission shafts 42 extend out of the transmission seat 41 and are connected by a coupling 49. In this way, the two transmission shafts 42 can be connected together, and a single drive motor 46 can drive the two transmission shafts 42 to rotate synchronously, thereby driving the two screen beds 20 to move synchronously.

[0030] A mounting flange 411 is provided at the bottom of the transmission seat 41, and a mounting plate is provided at the bottom of the screen box 10 on the side of the feed end of the screen bed 20. The transmission seat 41 is fixed by connecting the mounting flange 411 to the mounting plate. Several bolt holes 412 are provided on the mounting flange 411, and several strip-shaped connecting holes 15 are provided on the mounting plate at the bottom of the screen box 10 corresponding to the bolt holes 412. During installation, bolts are passed through the strip-shaped connecting holes 15 and the bolt holes 412 to fix the mounting flange 411 to the mounting plate. The length direction of the strip-shaped connecting holes 15 is perpendicular to the width direction of the screen box 10, so the installation position of the transmission seat 41 can be adjusted by passing through the strip-shaped connecting holes 15. Since the size of the reciprocating arm 44 is fixed, when the installation position of the transmission seat 41 changes, it will drive the screen bed 20 to change synchronously, thereby adjusting the tilt angle of the rocker arm 30 to meet the operating requirements of different materials.

[0031] The operating principle of a horizontal reciprocating screening machine in this embodiment is as follows: the material reaches the feeding end of the screen bed 20 through the feeding hopper 12, the drive motor 46 drives the active pulley 47 to rotate, and drives the driven pulley 45 and the transmission shaft 42 to rotate through the synchronous belt 48. The rotation is converted into the reciprocating motion of the reciprocating arm 44 through the eccentric wheel 43, which drives the screen bed 20 to reciprocate. Under the action of the inclined arrangement of the rocker arm 30, the material is thrown up at the moment of contact with the screen when the screen bed 20 reciprocates, and moves forward quickly in the manner of tumbling, rolling or even jumping. The material with small particle size enters the finished product classification bin through the screen holes, and the material with large particle size continues to move forward. After reaching the appropriate screen hole section, it is screened and enters the finished product classification bin.

[0032] The above description is merely a preferred embodiment of this utility model. The protection scope of this utility model is not limited to the above embodiments. All technical solutions falling within the scope of this utility model's concept are protected. It should be noted that for those skilled in the art, any improvements and modifications made without departing from the principle of this utility model should also be considered within the protection scope of this utility model.

Claims

1. A horizontal reciprocating sifter characterized by: The utility model provides a screening device, which comprises a screening box (10) and a screening bed (20) horizontally arranged in the screening box (10), a plurality of crossbeams (11) are arranged at the top of the screening box (10) and are perpendicular to the length direction of the screening box (10), the screening bed (20) is hung below the crossbeams (11) through a plurality of groups of rocker arms (30), the connecting end of the rocker arm (30) and the screening bed (20) is located on the side of the connecting end of the rocker arm (30) and the crossbeam (11) and deviates from the material direction, the screening box (10) is provided with a driving assembly (40) on the side of the feeding end of the screening bed (20) and drives the screening bed (20) to reciprocate, and a feeding hopper (12) is arranged above the feeding end of the screening bed (20) at the top of the screening box (10).

2. A horizontal reciprocating sifter as claimed in claim 1, characterized in that: The screening bed (20) is arranged in parallel and comprises a plurality of groups, a plurality of first hinged seats (13) are arranged on the bottom of the crossbeam (11) and are perpendicular to the length direction of the crossbeam (11), second hinged seats (21) are arranged on the two sides of the screening bed (20) and correspond to the side of the crossbeam (11) close to the discharging direction, and the two ends of the rocker arm (30) are hinged to the first hinged seat (13) and the second hinged seat (21) respectively.

3. A horizontal reciprocating sifter as claimed in claim 2, characterized in that: The driving assembly (40) comprises two transmission seats (41) arranged on the feeding end of the two groups of screening beds (20), a transmission shaft (42) perpendicular to the length direction of the screening box (10) is arranged in the transmission seat (41) and rotates horizontally, an eccentric wheel (43) is arranged on the transmission shaft (42), the feeding end of the screening bed (20) is provided with a baffle (22), the baffle (22) is provided with a connecting seat (23) on the side close to the driving assembly (40), a reciprocating arm (44) is arranged between the connecting seat (23) and the transmission seat (41), one end of the reciprocating arm (44) is rotatably sleeved on the eccentric wheel (43), and the other end of the reciprocating arm (44) is rotatably connected to the connecting seat (23); the outer end of the transmission shaft (42) extends out of the transmission seat (41) and is provided with a driven pulley (45), a driving motor (46) is arranged at the top of the screening box (10), a driving pulley (47) is arranged on the output shaft of the driving motor (46), and the driving pulley (47) and the driven pulley (45) are connected through a synchronous belt (48).

4. A horizontal reciprocating sifter as claimed in claim 3, characterized in that: The inner ends of the two transmission shafts (42) extend out of the transmission seat (41) and are connected through a shaft coupling (49).

5. A horizontal reciprocating sifter as claimed in claim 3, wherein: The bottom of the transmission seat (41) is provided with a mounting flange (411), a plurality of bolt holes (412) are arranged on the mounting flange (411), a plurality of strip-shaped connecting holes (15) are arranged on the bottom of the screening box (10) and correspond to the bolt holes (412), and the length direction of the strip-shaped connecting holes (15) is perpendicular to the width direction of the screening box (10).

6. A horizontal reciprocating sifter as claimed in claim 1, wherein: A top plate (14) is further arranged above the screening bed (20) at the top of the screening box (10).

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