Wood chip screening machine for processing density fiberboard

Abstract

The utility model discloses a wood chip screening machine for density fiberboard processing, and relates to the technical field of density fiberboard processing. The device comprises a base, two sets of supporting plates which are symmetrically distributed are fixedly installed at the top end of the base, two springs which are symmetrically distributed are fixedly installed at the top end of each supporting plate, a supporting table is fixedly installed at the top ends of the springs, and a frame is fixedly installed at the top end of the supporting table. Two inclined screening nets are arranged in the frame, a net opening of the screening net located on the upper portion is larger than a net opening of the screening net located on the lower portion, an inclined plate is arranged in the frame and located below the screening nets, connecting plates are fixedly installed on one side of the inclined plate and one side of each screening net, and discharging openings are formed in the middles of the connecting plates in a penetrating mode. Large wood chips, small wood chips and miscellaneous materials can be screened at the same time, efficiency is improved, and the quality of density fiberboards is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of density fiberboard processing, in particular to a wood chip screening machine for density fiberboard processing. Background Art

[0002] Publication No. "CN220991841U" discloses a wood chip screening machine for processing density fiberboard, comprising a base, a side plate installed on one side of the top end of the base, and a first motor installed on one side of the side plate, a screening box connected to the inner side of the side plate, and a reciprocating structure installed on the inner side of the screening box, and a screen plate connected to the top end of the reciprocating structure; by combining the provided screen plate, the screening drum and the screening slot, wood chips of different diameters can be screened out; since the size of the through-holes provided on the inner side of the screen plate is inconsistent with the diameter size of the screening slot, when the wood chips that have been preliminarily screened by the screen plate fall into the inner side of the screening drum, the rotation of the screening drum and the setting of the screening slot can be used to perform a secondary screening process on the preliminarily screened wood chips, thereby enabling the screened wood chips to be classified into different diameters, which is more practical;

[0003] Although the above technology can achieve the screening of large and small wood chips, the wood chips may fall from the feed trough during the secondary screening. At the same time, it is necessary to wait for the first screening to be completed before they can fall into the feed trough for secondary screening. The screening efficiency is not high. At the same time, foreign materials still exist in the wood chips, affecting the quality of the density fiberboard. Utility Model Content

[0004] In order to solve the problem of low screening efficiency and the presence of debris in wood chips, which affects the quality of density fiberboard, the utility model aims to provide a wood chip screening machine for density fiberboard processing.

[0005] In order to solve the above technical problems, the present invention adopts the following technical solutions: a wood chip screening machine for processing density fiberboard, comprising a base, two sets of symmetrically distributed support plates are fixedly installed on the top of the base, two symmetrically distributed springs are fixedly installed on the top of each support plate, a support platform is fixedly installed on the top of the spring, a frame is fixedly installed on the top of the support platform, two inclined screening meshes are arranged inside the frame, the mesh opening of the upper screening mesh is larger than the mesh opening of the lower screening mesh, an inclined plate is arranged below the screening mesh inside the frame, a connecting plate is fixedly installed on one side of the inclined plate and the two screening meshes, a feeding port is penetrated through the middle of the connecting plate, and the bottom ends of the two upper connecting plates are fixed A lower hopper is installed, and lower hoppers are fixedly installed on the opposite outer sides of the two lower hoppers; two symmetrically distributed L-shaped plates are fixedly installed on the upper surface of the base, and the top of the L-shaped plate slides through a moving rod, and the top of the moving rod is fixedly installed with a first fixed plate, and the first fixed plate is fixed on the frame, and the bottom end of the moving rod is fixedly installed with a moving plate, and a fixed seat is fixedly installed at the middle position of the bottom end of the frame, and the bottom of the fixed seat is rotated through a rotating shaft, and the rotating shaft rotates through one of the L-shaped plates, and both ends of the rotating shaft are fixedly installed with eccentric wheels that fit with the moving plate, and the rotating shaft is located at the edge of the eccentric wheel, and a motor is fixedly installed at the top edge of the base, and the driving end of the motor is fixedly connected to the rotating shaft.

[0006] Preferably, blocks are fixedly installed on both sides of the inclined plate and the two screening nets, and slots for cooperating with the blocks are opened on both sides of the inner wall of the frame. A square slot for cooperating with the screening net and the inclined plate is opened on the side of the frame away from the connecting plate.

[0007] Compared with the prior art, the beneficial effects of the present invention are:

[0008] 1. This application realizes the simultaneous screening of large wood chips, small wood chips and miscellaneous materials, which improves the efficiency and the quality of the density fiberboard;

[0009] 2. This application is simple to operate, and it is easy to take out the screening net and inclined plate from the frame for replacement and cleaning, and it is also easy to install. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0011] Figure 1This is a schematic structural diagram of the utility model.

[0012] Figure 2 This is another structural diagram of the present invention.

[0013] Figure 3 This is a schematic diagram of the connection structure of the inclined plate, screening net and card block in the utility model.

[0014] Figure 4 It is a schematic diagram of the connection structure between the connecting plate and the lower hopper in the utility model.

[0015] Figure 5 For this utility model Figure 4 Enlarged view of point A in the middle.

[0016] Figure 6 This is a schematic diagram of the connection structure between the frame and the slot in the utility model.

[0017] In the figure: 1. Base; 11. Support plate; 12. Spring; 13. Support platform; 14. Frame; 15. Screening net; 16. Inclined plate; 18. Connecting plate; 19. Discharge port; 2. Discharge hopper; 21. Discharge plate; 22. L-shaped plate; 23. Moving rod; 24. First fixed plate; 25. Moving plate; 26. Fixed seat; 27. Rotating shaft; 28. Eccentric wheel; 29. ​​Motor; 3. Block; 31. Slot; 32. Square slot; 4. Second fixed plate; 42. Threaded rod; 43. Cylinder; 44. Clamping plate; 45. Circular slot; 46. Empty slot; 5. Positioning plate; 6. Blocking plate. DETAILED DESCRIPTION

[0018] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0019] Example: Figure 1-6As shown, the utility model provides a wood chip screening machine for processing density fiberboard, comprising a base 1, two groups of symmetrically distributed support plates 11 are fixedly installed on the top of the base 1, two symmetrically distributed springs 12 are fixedly installed on the top of each support plate 11, a support platform 13 is fixedly installed on the top of the spring 12, a frame 14 is fixedly installed on the top of the support platform 13, two inclined screening nets 15 are provided inside the frame 14, the mesh opening of the upper screening net 15 is larger than the mesh opening of the lower screening net 15, an inclined plate 16 is provided below the screening net 15 inside the frame 14, a connecting plate 18 is fixedly installed on one side of the inclined plate 16 and the two screening nets 15, a discharge port 19 is penetrated through the middle of the connecting plate 18, a discharge hopper 2 is fixedly installed on the bottom ends of the two upper connecting plates 18, and a discharge plate 21 is fixedly installed on the opposite outer sides of the two discharge hoppers 2;

[0020] Two symmetrically distributed L-shaped plates 22 are fixedly installed on the upper surface of the base 1, and a moving rod 23 is slidably passed through the top of the L-shaped plate 22. A first fixed plate 24 is fixedly installed on the top of the moving rod 23, and the first fixed plate 24 is fixed on the frame 14. A moving plate 25 is fixedly installed on the bottom end of the moving rod 23, and a fixed seat 26 is fixedly installed at the middle position of the bottom end of the frame 14. The bottom of the fixed seat 26 is rotated and passed through a rotating shaft 27, and the rotating shaft 27 rotates and passes through one of the L-shaped plates 22. Both ends of the rotating shaft 27 are fixedly installed with an eccentric wheel 28 that fits with the moving plate 25. The rotating shaft 27 is located at the edge of the eccentric wheel 28. A motor 29 is fixedly installed at the top edge of the base 1, and the driving end of the motor 29 is fixedly connected to the rotating shaft 27.

[0021] Blocks 3 are fixedly installed on both sides of the inclined plate 16 and the two screening nets 15, and slots 31 for use with the blocks 3 are opened on both sides of the inner wall of the frame 14. A square slot 32 for use with the screening net 15 and the inclined plate 16 is opened on the side of the frame 14 away from the connecting plate 18.

[0022] The bottom end of the lower hopper 2 is an inclined surface, which makes it easier for the wood chips to slide down from the lower hopper 2, pass through the discharge port on the lower hopper 2, and fall into the collection box.

[0023] The inclined plate 16 and the two screening nets 15 are fixedly installed with a second fixed plate 4 on one side close to the square groove 32. The frame 14 is threadedly connected to a plurality of rectangularly distributed threaded rods 42 on one side close to the second fixed plate 4. A cylinder 43 is fixedly installed on the side of the threaded rod 42 away from the frame 14. A clamping plate 44 is fixedly installed on both sides of the cylinder 43. A circular groove 45 is opened through the top of the second fixed plate 4 to cooperate with the cylinder 43. An empty groove 46 is opened on both sides of the top of the second fixed plate 4 to cooperate with the clamping plate 44. By setting the cylinder 43, when the second fixed plate 4 is fixed to the frame 14, When starting, first make the circular groove 45 and the empty groove 46 on the second fixed plate 4 parallel to the cylinder 43 and the clamping plate 44, and pass the cylinder 43 and the clamping plate 44 through the circular groove 45 and the empty groove 46 to make the second fixed plate 4 fit with the frame 14, then drive the threaded rod 42 and the clamping plate 44 to rotate by rotating the cylinder 43, and the threaded rod 42 is connected to the threaded connection of the frame 14, so that the clamping plate 44 fits with the second fixed plate 4, and the second fixed plate 4 is pressed against the frame 14, thereby increasing the stability of the screening mesh 15 and the inclined plate 16 installed on the frame 14. In actual use, the diameter of the circular groove 45 is slightly larger than the diameter of the cylinder 43.

[0024] The end of each screening net 15 and inclined plate 16 away from the second fixed plate 4 is trapezoidal, which is more conducive to collecting the screened wood chips and does not require a collection box with the same width as the screening net 15 and inclined plate 16.

[0025] Several annular and evenly distributed anti-slip strips are fixedly installed on the outside of the cylinder 43. By providing the anti-slip strips, the friction between the hand and the cylinder 43 is increased, which is more conducive to the cylinder 43 driving the threaded rod 42 to rotate.

[0026] A plurality of positioning plates 5 are fixedly installed on the side of the second fixing plate 4 away from the frame 14. Each positioning plate 5 is located at the edge of the corresponding empty slot 46. By setting the positioning plates 5, when the clamping plate 44 is fitted with the positioning plate 5 through the reverse rotation of the cylinder 43, it means that the clamping plate 44 corresponds to the empty slot 46, so that the position of the rotation can be known more accurately. When the clamping plate 44 corresponds to the empty slot 46, the second fixing plate 4, the screening net 15 and the inclined plate 16 can be taken off the frame 14.

[0027] Two symmetrically distributed blocking plates 6 are fixedly installed on the top of the two screening nets 15, each connecting plate 18, and each blanking plate 21. By setting the blocking plates 6, it is prevented that the wood chips fall from the edges of the screening nets 15, inclined plates 16, connecting plates 18, and blanking plates 21 when the screened wood chips are discharged, thereby affecting the collection of the wood chips.

[0028] Working principle: In actual use, the motor 29 is connected to an external power supply. When working, the large wood chip collection box is placed under the rear unloading plate 21, the small wood chip collection box is placed under the front unloading plate 21, and the miscellaneous material collection box is placed under the lowest unloading port 19. Then the motor 29 is started to drive the rotating shaft 27 and the eccentric wheel 28 to rotate. Since the eccentric wheel 28 is always in contact with the movable plate 25, the rotating shaft 27 is at the edge of the eccentric wheel 28. Therefore, the rotation of the eccentric wheel 28 drives the movable plate 25 to move back and forth up and down. The movement of the movable plate 25 drives the movable rod 23 to slide in the L-shaped plate 22, driving the first fixed plate 24, the frame 14 and the two screening nets 15 and the inclined plate 16 inside the frame 14 to move back and forth up and down at the same time.

[0029] At the same time, the spring 12 also moves up and down back and forth, and then the wood chips that need to be screened are placed on the first screening net 15. The wood chips are shaken so that the large wood chips remain on the first screening net 15 and slide downward, and the small wood chips and sundries fall from the first screening net 15 to the second screening net 15, and the small wood chips and sundries are screened. Under the action of the second screening net 15, the small wood chips are retained on the second screening net 15 and slide downward, and the sundries fall directly from the second screening net 15 onto the inclined plate 16 and slide down from the inclined plate 16, thereby realizing the screening of large wood chips, small wood chips and sundries.

[0030] Obviously, those skilled in the art may make various modifications and variations to the present invention without departing from the spirit and scope of the present invention. Thus, if such modifications and variations fall within the scope of the claims of the present invention and their equivalents, the present invention is intended to include such modifications and variations.

Claims

1. A wood chip screening machine for processing density fiberboard, comprising a base (1), characterized in that: A base (1), wherein two groups of symmetrically distributed support plates (11) are fixedly installed on the top of the base (1), two symmetrically distributed springs (12) are fixedly installed on the top of each support plate (11), a support platform (13) is fixedly installed on the top of the spring (12), a frame (14) is fixedly installed on the top of the support platform (13), two inclined screening nets (15) are provided inside the frame (14), the mesh opening of the upper screening net (15) is larger than the mesh opening of the lower screening net (15), an inclined plate (16) is provided inside the frame (14) below the screening net (15), a connecting plate (18) is fixedly installed on one side of the inclined plate (16) and the two screening nets (15), a discharge port (19) is opened through the middle of the connecting plate (18), a discharge hopper (2) is fixedly installed on the bottom ends of the two upper connecting plates (18), and a discharge plate (21) is fixedly installed on the opposite outer sides of the two discharge hoppers (2); Two symmetrically distributed L-shaped plates (22) are fixedly installed on the upper surface of the base (1), and a moving rod (23) is slidably passed through the top of the L-shaped plate (22). A first fixed plate (24) is fixedly installed on the top of the moving rod (23), and the first fixed plate (24) is fixed on the frame (14). A moving plate (25) is fixedly installed on the bottom end of the moving rod (23). A fixed seat (26) is fixedly installed at the middle position of the bottom end of the frame (14). A rotating shaft (27) is rotatably passed through the bottom of the fixed seat (26), and the rotating shaft (27) rotates through one of the L-shaped plates (22). An eccentric wheel (28) that fits the moving plate (25) is fixedly installed at both ends of the rotating shaft (27), and the rotating shaft (27) is located at the edge of the eccentric wheel (28). A motor (29) is fixedly installed at the top edge of the base (1), and the driving end of the motor (29) is fixedly connected to the rotating shaft (27).

2. A wood chip screening machine for processing density fiberboard according to claim 1, characterized in that: Blocks (3) are fixedly mounted on both sides of the inclined plate (16) and the two screening nets (15); slots (31) for use with the block (3) are provided on both sides of the inner wall of the frame (14); and a square slot (32) for use with the screening net (15) and the inclined plate (16) is provided on a side of the frame (14) away from the connecting plate (18).

3. A wood chip screening machine for processing density fiberboard according to claim 1, characterized in that: The bottom end of the lower hopper (2) is an inclined surface.

4. A wood chip screening machine for processing density fiberboard according to claim 1, characterized in that: The inclined plate (16) and the two screening nets (15) are fixedly mounted with a second fixed plate (4) on one side close to the square groove (32); a plurality of rectangularly distributed threaded rods (42) are threadedly connected to the side of the frame (14) close to the second fixed plate (4); a cylinder (43) is fixedly mounted on the side of the threaded rod (42) away from the frame (14); clamping plates (44) are fixedly mounted on both sides of the cylinder (43); a circular groove (45) for use with the cylinder (43) is formed through the top of the second fixed plate (4); and empty grooves (46) for use with the clamping plates (44) are formed through the top of the second fixed plate (4) on both sides of the circular groove (45).

5. A wood chip screening machine for processing density fiberboard according to claim 4, characterized in that: Each of the screening nets (15) and the inclined plate (16) has a trapezoidal shape at one end away from the second fixed plate (4).

6. A wood chip screening machine for processing density fiberboard according to claim 4, characterized in that: Several annular, evenly distributed anti-slip strips are fixedly mounted on the outside of the cylinder (43).

7. The wood chip screening machine for processing density fiberboard according to claim 4, characterized in that: A plurality of positioning plates (5) are fixedly mounted on a side of the second fixing plate (4) away from the frame (14), and each positioning plate (5) is located at the edge of a corresponding empty slot (46).

8. The wood chip screening machine for processing density fiberboard according to claim 1, characterized in that: Two symmetrically distributed blocking plates (6) are fixedly mounted on the top of the two screening nets (15), each connecting plate (18), and each blanking plate (21).

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