Screening equipment for biodegradable material production

Abstract

The invention relates to screening equipment for biodegradable material production, which comprises a box body, a screening frame rotationally connected to a bracket in the box body, a rotating assembly arranged on the outer side of the box body and used for driving the screening frame to rotate, a driving mechanism arranged at the bottom of the box body and used for driving the rotating assembly to rotate back and forth, and a screening plate arranged at the bottom of the screening frame. The screening plate is slidably connected with the side wall of the screening frame, a guiding sliding seat is slidably connected into an annular guiding sliding groove formed in the top of the bracket and fixedly connected with the bottom of the bracket, a vibration mechanism used for the screening plate to reciprocate up and down is arranged in the guiding sliding seat, and the vibration mechanism acts along with rotation of the screening frame. The vibrating mechanism is driven to act while the screening frame and the screening plate rotate back and forth in a reciprocating mode, materials on the screening surface vibrate up and down while rolling back and forth on the screening plate, the screening effect is improved while screening plate blockage is reduced, the screening effect and efficiency are improved by combining the two screening modes, and the practicability is high. And the device is suitable for screening biodegradable materials with different properties.

Description

Technical Field

[0001] The invention relates to the technical field of screening equipment, in particular to a screening equipment for producing biodegradable materials. Background Art

[0002] Biodegradable materials are polymer materials that can undergo chemical, biological or physical degradation or enzymatic hydrolysis under the action of microorganisms existing in nature, such as bacteria, fungi, and algae. In order to ensure uniform product particle size, remove impurities and particles that do not meet the requirements, optimize material properties, and improve production efficiency, screening is of irreplaceable importance in the production of biodegradable materials.

[0003] Most of the existing screening equipment is to set a spring at the bottom or one side of the screen plate, and drive the eccentric wheel or crank connecting rod to rotate by rotating the motor. The eccentric wheel or crank connecting rod rotates continuously, so that the screen plate continuously reciprocates in the vertical or horizontal direction. The material is vibrated on the screen plate, and the smaller particles pass through the screen, and the larger particles are separated. Horizontal vibration mainly relies on horizontal movement. For light or fine particles, the screening efficiency is low. Vertical vibration mainly relies on gravity. For materials with high viscosity or easy to agglomerate, the screening efficiency is low. There are many kinds of biodegradable materials. Different screening methods or combinations need to be selected according to the properties of different materials to achieve better screening effects. For example, PLA and PHA may be relatively fragile and easy to break during screening. It is necessary to select a gentle screening method and avoid clogging of the screen holes. This requires a combination of multiple screening methods.

[0004] Most of the existing screening equipments adopt a single screening mode of horizontal vibration or vertical vibration, and cannot combine multiple screening modes. The screening efficiency and effect are low. Based on this, a screening equipment for biodegradable material production is proposed. Summary of the invention

[0005] The present invention provides a screening device for biodegradable material production, which is used to solve the problem mentioned in the above technical background that the existing screening equipment mostly adopts a single screening mode of horizontal vibration or vertical vibration, cannot combine multiple screening modes, and has low screening efficiency and effect.

[0006] In order to solve the above technical problems, the present invention adopts the following technical scheme: a screening device for producing biodegradable materials, comprising a box body, a bracket is fixedly provided on the inner wall of the box body, a connected hollow groove is opened in the middle of the bracket, the top of the bracket is rotatably connected to a screening frame, a rotating component for driving the screening frame to rotate is provided on the outside of the box body, a driving mechanism for driving the rotating component to reciprocate is provided at the bottom of the box body, a sieve plate is provided at the bottom of the screening frame, the sieve plate is slidably connected to the side wall of the screening frame, a vertical slide groove is opened on the side wall of the screening frame, a slider is fixedly provided on the outer wall of the sieve plate, the slider is slidably connected in the vertical slide groove, an annular guide slide groove is opened on the top of the bracket, a guide slide seat is slidably connected in the guide slide groove, the guide slide seat is fixedly connected to the bottom of the bracket, a vibration mechanism for reciprocating the sieve plate up and down is provided in the guide slide seat, and the vibration mechanism acts with the rotation of the screening frame.

[0007] Preferably, the rotating assembly includes a rotating rod rotatably connected to both sides of the box body, a half gear is fixedly sleeved on the rotating rod, a first through groove is opened on the outer walls of both sides of the box body, a gear ring is fixedly sleeved on the outer wall of the screening frame, and the half gear passes through the first through groove and is meshingly connected with the gear ring.

[0008] Preferably, the driving mechanism includes a driving cavity opened at the bottom of the box body, and the bottom of the driving cavity is rotatably connected to two rotating columns, the bottom of any of the rotating columns passes through the box body and is fixedly connected to a driving motor, and the driving motor is fixedly arranged at the bottom of the box body, and a first gear meshing with each other is fixedly sleeved on one side below the two rotating columns, and a transmission wheel is fixedly sleeved on the rotating column and the rotating rod, and the two transmission wheels are connected by a transmission belt, and the side wall of the driving cavity is provided with a second through groove for the transmission belt to pass through.

[0009] Preferably, when the half gear on one side is meshed with the ring gear, the half gear on the other side is separated from the ring gear.

[0010] Preferably, the vibration mechanism includes a lifting groove opened in the guide slide, the bottom of the lifting groove is rotatably connected to a rotating block, the upper end of the rotating block contacts a moving block, the top of the moving block extends through the vertical slide groove, and the upper end of the rotating block and the lower end of the moving block are both inclined sections.

[0011] Preferably, an annular driving groove is opened at the bottom of the guide slide groove, a rotating shaft is fixedly provided at the bottom of the rotating block, the rotating shaft extends into the driving groove and is fixedly sleeved with a second gear, an annular rack is fixedly provided on the inner wall of one side of the driving groove, and the second gear is meshingly connected with the annular rack.

[0012] Preferably, limiting grooves are provided on the inner walls on both sides of the lifting groove, and limiting blocks are fixedly provided on the outer wall of the moving block, and the limiting blocks are slidably connected in the limiting grooves.

[0013] Preferably, a spring is fixedly provided between the sliding block and the vertical sliding groove.

[0014] Preferably, a plurality of the screening frames and screen plates are arranged in the vertical direction of the box body, and the diameters of the screen holes on the screen plates decrease from top to bottom.

[0015] Preferably, a material receiving basin is fixedly provided at the bottom of the box body.

[0016] Beneficial effects of the screening device for biodegradable material production of the present invention:

[0017] (1) The present invention drives the rotating column on one side to rotate by driving the motor, and under the meshing action of the first gear, the rotating column on the other side moves in the opposite direction synchronously, and under the transmission action of the transmission wheel and the transmission belt, the rotating rods on both sides of the box body are driven to rotate in the opposite direction synchronously, so that the half gears on the rotating rods alternately mesh with the gear rings in the opposite direction to rotate, and the gear rings drive the reciprocating rotation of the screening frame and the screening plate in the positive and negative directions. When the screening plate switches the rotation in the positive and negative directions, the material on the screening plate rolls reciprocatingly on the screening plate due to the inertia, and while the screening frame rotates, it drives the guide slide at the bottom to rotate in the guide slide groove, so that the rotating shaft rotates synchronously in the driving groove, and the rotating shaft rotates synchronously in the driving groove. While the shaft rotates in the driving groove, the second gear on the rotating shaft continuously meshes with the annular rack, causing the second gear to rotate and simultaneously driving the rotating shaft and the rotating block to rotate. The rotation of the rotating block causes the positions of the oblique cross-section on its top and the oblique cross-section on the lower end of the moving block to continuously change, so that the moving block continuously moves up and down, driving the slider to slide up and down, and the slider drives the screen plate to continuously move up and down to generate vibration, thereby achieving the screen plate continuously vibrating up and down while reciprocating forward and reverse rotation, causing the material on the screen plate to continuously roll in the forward and reverse directions and jump up and down, thereby improving the fluidity of the material on the screen plate, thereby improving the effect and efficiency of material screening.

[0018] (2) The present invention provides a vibration structure on the guide slide, and drives the vibration mechanism while the screening frame rotates so that the guide slide rotates in the guide slide groove. No additional drive is required, and the sieve plate can be vibrated and screened while the screening frame and the sieve plate rotate for screening. Not only the screening effect and efficiency are improved, but also the driving source is reduced, saving energy consumption. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the main structure of the present invention;

[0020] Figure 2It is a schematic diagram of the connection structure of the driving mechanism at the bottom of the box body of the present invention;

[0021] Figure 3 For the present invention Figure 1 The enlarged schematic diagram at A in the middle;

[0022] Figure 4 It is a schematic diagram of the connection structure of the vibration mechanism in the guide slide of the present invention;

[0023] Figure 5 It is a three-dimensional structural schematic diagram of the screening frame and the screening plate of the present invention;

[0024] Figure 6 It is a schematic diagram of the top view of the guide slot on the top of the bracket of the present invention;

[0025] Figure 7 It is a schematic diagram of the connection structure between the second gear and the annular rack in the driving groove of the present invention.

[0026] In the figure: 1. box body, 2. bracket, 3. hollow groove, 4. screening frame, 5. sieve plate, 6. vertical slide groove, 7. slider, 8. guide slide groove, 9. guide slide seat, 10. rotating rod, 11. half gear, 12. first through groove, 13. gear ring, 14. driving chamber, 15. rotating column, 16. driving motor, 17. first gear, 18. transmission wheel, 19. transmission belt, 20. second through groove, 21. lifting groove, 22. rotating block, 23. moving block, 24. driving groove, 25. rotating shaft, 26. second gear, 27. annular rack, 28. limit groove, 29. limit block, 30. spring, 31. receiving basin. DETAILED DESCRIPTION

[0027] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0028] like Figure 1-7As shown, a screening device for the production of biodegradable materials comprises a box body 1, a feed hopper is fixedly provided on one side of the top of the box body 1, legs are fixedly provided in a rectangular array on the bottom of the box body 1, a bracket 2 is fixedly provided on the inner wall of the box body 1, a communicating hollow groove 3 is provided in the middle of the bracket 2, a screening frame 4 is rotatably connected to the top of the bracket 2, a rotating assembly for driving the screening frame 4 to rotate is provided on the outside of the box body 1, a driving mechanism for driving the rotating assembly to reciprocate is provided on the bottom of the box body 1, a sieve plate 5 is provided on the bottom of the screening frame 4, and the sieve plate 5 is slidably connected to the side wall of the screening frame 4, A vertical slide groove 6 is provided on the side wall of the screening frame 4, and a slider 7 is fixedly provided on the outer wall of the screen plate 5. The slider 7 is slidably connected to the vertical slide groove 6. An annular guide slide groove 8 is provided on the top of the bracket 2. A guide slide seat 9 is slidably connected to the guide slide groove 8. The guide slide seat 9 is fixedly connected to the bottom of the bracket 2. A vibration mechanism for the up and down reciprocation of the screen plate 5 is provided in the guide slide seat 9. The vibration mechanism acts as the screening frame 4 rotates. The number of the vibration mechanisms is set to four and is evenly distributed around the screening frame 4 to ensure the stability of the screen plate 5 when it vibrates up and down.

[0029] The rotating assembly includes a rotating rod 10 rotatably connected to both sides of the box body 1, and the upper and lower ends of the outer walls on both sides of the box body 1 are fixedly connected with mounting plates. The rotating rod 10 is rotatably connected between the two mounting plates. A half gear 11 is fixedly sleeved on the rotating rod 10, and first through grooves 12 are opened on the outer walls on both sides of the box body 1. A gear ring 13 is fixedly sleeved on the outer wall of the screening frame 4, and the half gear 11 passes through the first through groove 12 and is meshed with the gear ring 13.

[0030] The rotation of the rotating rods 10 on both sides drives the half gears 11 to rotate, and the half gears 11 on both sides alternately mesh with the ring gears 13 to rotate, and the ring gears drive the screening frame 4 to rotate, thereby causing the screening frame 4 and the sieve plate 5 at the bottom to rotate, and the material on the sieve plate 5 rolls, thereby achieving preliminary screening of biodegradable materials.

[0031] The driving mechanism includes a driving cavity 14 opened at the bottom of the box body 1, and two rotating columns 15 are rotatably connected to the bottom of the driving cavity 14. The bottom of any of the rotating columns 15 passes through the box body 1 and is fixedly connected to a driving motor 16. The driving motor 16 is fixedly arranged at the bottom of the box body 1, and the rotating column 15 is fixedly connected to the output shaft of the driving motor 16. A first gear 17 meshing with each other is fixedly sleeved on one side below the two rotating columns 15. A transmission wheel 18 is fixedly sleeved on the rotating column 15 and the rotating rod 10. The two transmission wheels 18 are connected for transmission by a transmission belt 19, and a second through groove 20 for the transmission belt 19 to pass through is provided on the side wall of the driving cavity 14.

[0032] The driving motor 16 drives the rotating column 15 on one side to rotate, and under the meshing action of the first gear 17, the rotating column 15 on the other side moves in the opposite direction synchronously, and under the transmission action of the transmission wheel 18 and the transmission belt 19, the rotating rods 10 on both sides of the box body 1 are driven to rotate in the opposite direction synchronously, so that the half gears 11 on the rotating rods 10 alternately mesh with the gear ring 13 in the opposite direction to rotate, and the gear ring 13 drives the screening frame 4 and the screen plate 5 to reciprocate in the positive and negative directions. When the screen plate 5 switches the rotation in the positive and negative directions, the material on the screen plate 5 rolls reciprocatingly on the screen plate 5 due to the inertia, thereby improving the fluidity of the material on the screen plate 5 and improving the screening effect.

[0033] When the half gear 11 on one side is meshed with the ring gear 13, the half gear 11 on the other side is separated from the ring gear 13, which does not affect the alternating meshing of the half gears 11 on both sides with the ring gear 13 and the reverse rotation, and further does not affect the reciprocating forward and reverse rotation of the screening frame 4 and the screen plate 5 driven by the ring gear 13.

[0034] The vibration mechanism includes a lifting groove 21 opened in the guide slide 9, the bottom of the lifting groove 21 is rotatably connected to a rotating block 22, the upper end of the rotating block 22 contacts a moving block 23, the top of the moving block 23 extends through the vertical slide groove 6, and the upper end of the rotating block 22 and the lower end of the moving block 23 are both oblique sections.

[0035] By rotating the rotating block 22, the positions of the inclined section at the top of the rotating block 22 and the inclined section at the lower end of the moving block 23 are constantly changing. When the inclined upward end of the inclined section at the top of the rotating block 22 contacts the inclined downward end of the inclined section at the lower end of the moving block 23, the moving block 23 moves upward and lifts the slider 7 upward, thereby causing the slider 7 to drive the screen plate 5 upward. When the inclined upward end of the inclined section at the top of the rotating block 22 contacts the inclined upward end of the inclined section at the lower end of the moving block 23, the moving block 23 descends, thereby causing the slider 7 to drive the screen plate 5 downward. This reciprocating process causes the screen plate 5 to vibrate up and down, thereby improving the screening effect of the material on the screen plate 5 and avoiding clogging of the screen holes on the screen plate 5.

[0036] An annular driving groove 24 is provided at the bottom of the guide slide groove 8, and the centers of the driving groove 24 and the guide slide groove 8 are at the same position. A rotating shaft 25 is fixedly provided at the bottom of the rotating block 22, and the rotating shaft 25 extends into the driving groove 24 and is fixedly sleeved with a second gear 26. An annular rack 27 is fixedly provided on the inner wall of one side of the driving groove 24, and the second gear 26 is meshedly connected with the annular rack 27.

[0037] When the screening frame 4 rotates, the guide slide 9 at the bottom is driven to rotate in the guide slide groove 8, so that the rotating shaft 25 rotates synchronously in the driving groove 24. When the rotating shaft 25 revolves in the driving groove 24, the second gear 26 on the rotating shaft 25 continuously engages with the annular rack 27, so that the second gear 26 rotates and drives the rotating shaft 25 and the rotating block 22 to rotate at the same time, so as to achieve the effect of moving the moving block 23 up and down. The screening frame 4 and the sieve plate 5 can be rotated and screened at the same time without the need for additional drive.

[0038] Limiting grooves 28 are provided on the inner walls on both sides of the lifting groove 21, and limiting blocks 29 are fixedly provided on the outer wall of the moving block 23. The limiting blocks 29 are slidably connected in the limiting grooves 28 to limit the movement trajectory of the moving block 23, so that the moving block 23 only moves in the up and down directions as the rotating block 22 rotates, thereby preventing the moving block 23 from rotating as the rotating block 22 rotates.

[0039] A spring 30 is fixed between the slider 7 and the vertical slide groove 6. When the moving block 23 moves upward to push the slider 7 upward, the slider 7 compresses the spring 30 at the same time. When the moving block 23 moves downward, the slider 7 moves downward under the resetting action of the spring 30, thereby ensuring that the slider 7 drives the screen plate 5 to continuously vibrate up and down.

[0040] The screening frames 4 and the screening plates 5 are arranged in a plurality in the vertical direction of the box body 1, and the diameters of the screening holes on the screening plates 5 decrease from top to bottom, so as to facilitate the classification and screening of the biodegradable materials.

[0041] A collecting basin 31 is fixedly provided at the bottom of the box body 1 to collect the biodegradable materials after screening. A sealed box door is connected to one side of the box body 1 through a hinge. After screening, the sealed box door is opened to take out the biodegradable materials after screening.

[0042] When in use, the biodegradable materials to be screened are added from the feed hopper into the box body 1, and the materials fall onto the upper screen plate 5. The driving motor 16 is started to drive the rotating column 15 on one side to rotate. Under the meshing action of the first gear 17, the rotating column 15 on the other side is synchronously reversed. Under the transmission action of the transmission wheel 18 and the transmission belt 19, the rotating rods 10 on both sides of the box body 1 are driven to rotate synchronously in the opposite direction, so that the half gears 11 on the rotating rods 10 alternately mesh with the gear ring 13 in the opposite direction to rotate, and the gear ring 13 drives the sieve frame 4 and the sieve plate 5 to reciprocate in the forward and reverse directions. While the sieve frame 4 rotates in the forward and reverse directions, it drives the guide slide 9 at the bottom to rotate in the guide slide groove 8, so that the rotating shaft 25 rotates synchronously in the driving groove 24. While the rotating shaft 25 rotates in the driving groove 24, the second gear 26 on the rotating shaft 25 is continuously meshed with the annular rack 27, so that the second gear 26 rotates and drives the rotating shaft 25 and the rotating block 22 to rotate at the same time. The positions of the oblique section at the top of the rotating block 22 and the oblique section at the lower end of the moving block 23 are continuously changed, so that the moving block 23 moves up and down and continuously lifts the slider 7. The slider 7 drives the screen plate 5 to continuously move up and down to generate vibration, so that the screen plate 5 continuously vibrates up and down while reciprocating forward and reverse rotation, so that the material on the screen plate 5 continuously rolls in the forward and reverse directions and jumps up and down, thereby improving the fluidity of the material on the screen plate 5, thereby improving the effect and efficiency of material screening.

[0043] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A screening device for biodegradable material production, comprising a housing (1), characterized in that: The inner wall of the box (1) is fixedly provided with a bracket (2), a connected hollow groove (3) is provided in the middle of the bracket (2), the top of the bracket (2) is rotatably connected to a screening frame (4), the outer side of the box (1) is provided with a rotating assembly for driving the screening frame (4) to rotate, the bottom of the box (1) is provided with a driving mechanism for driving the rotating assembly to reciprocate, the bottom of the screening frame (4) is provided with a sieve plate (5), the sieve plate (5) is slidably connected to the side wall of the screening frame (4), and the side wall of the screening frame (4) is connected to the side wall of the screening frame (4). A vertical slide groove (6) is provided, and a slider (7) is fixedly provided on the outer wall of the sieve plate (5), and the slider (7) is slidably connected to the vertical slide groove (6). An annular guide slide groove (8) is provided on the top of the bracket (2), and a guide slide seat (9) is slidably connected to the guide slide groove (8), and the guide slide seat (9) is fixedly connected to the bottom of the bracket (2). A vibration mechanism for reciprocating the sieve plate (5) up and down is provided in the guide slide seat (9), and the vibration mechanism acts as the sieving frame (4) rotates.

2. A screening device for biodegradable material production according to claim 1, characterized in that: The rotating assembly comprises a rotating rod (10) rotatably connected to both sides of the box body (1), a half gear (11) is fixedly sleeved on the rotating rod (10), first through slots (12) are opened on the outer walls of both sides of the box body (1), a gear ring (13) is fixedly sleeved on the outer wall of the screening frame (4), and the half gear (11) passes through the first through slot (12) and is meshingly connected with the gear ring (13).

3. A screening device for biodegradable material production according to claim 2, characterized in that: The driving mechanism comprises a driving cavity (14) opened at the bottom of the box body (1), two rotating columns (15) are rotatably connected to the bottom of the driving cavity (14), the bottom of any of the rotating columns (15) passes through the box body (1) and is fixedly connected to a driving motor (16), the driving motor (16) is fixedly arranged at the bottom of the box body (1), a first gear (17) meshing with each other is fixedly sleeved on one side below the two rotating columns (15), a transmission wheel (18) is fixedly sleeved on the rotating column (15) and the rotating rod (10), the two transmission wheels (18) are connected by a transmission belt (19), and a second through groove (20) for the transmission belt (19) to pass through is provided on the side wall of the driving cavity (14).

4. The screening device for biodegradable material production according to claim 3, characterized in that: When the half gear (11) on one side is meshed with the ring gear (13), the half gear (11) on the other side is separated from the ring gear (13).

5. The screening device for biodegradable material production according to claim 1, characterized in that: The vibration mechanism comprises a lifting groove (21) provided in the guide slide (9); the bottom of the lifting groove (21) is rotatably connected to a rotating block (22); the upper end of the rotating block (22) contacts a moving block (23); the top of the moving block (23) extends through the vertical slide groove (6); the upper end of the rotating block (22) and the lower end of the moving block (23) are both oblique sections.

6. The screening device for biodegradable material production according to claim 5, characterized in that: An annular driving groove (24) is provided at the bottom of the guide slide groove (8), a rotating shaft (25) is fixedly provided at the bottom of the rotating block (22), the rotating shaft (25) extends through the driving groove (24) and is fixedly sleeved with a second gear (26), an annular rack (27) is fixedly provided on the inner wall of one side of the driving groove (24), and the second gear (26) is meshedly connected with the annular rack (27).

7. The screening device for biodegradable material production according to claim 5, characterized in that: Limiting grooves (28) are provided on the inner walls on both sides of the lifting groove (21), and limiting blocks (29) are fixedly provided on the outer wall of the moving block (23), and the limiting blocks (29) are slidably connected in the limiting grooves (28).

8. The screening device for biodegradable material production according to claim 1, characterized in that: A spring (30) is fixedly arranged between the sliding block (7) and the vertical sliding groove (6).

9. The screening device for biodegradable material production according to claim 1, characterized in that: A plurality of screening frames (4) and screening plates (5) are arranged in the vertical direction of the box body (1), and the diameters of the screening holes on the screening plates (5) decrease from top to bottom.

10. The screening device for biodegradable material production according to claim 1, characterized in that: A material receiving basin (31) is fixedly provided at the bottom of the box body (1).

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