Dredging device of separating screen

Abstract

The invention belongs to the technical field of separating screens, and particularly relates to a separating screen dredging device which comprises a base, a frame with an adjustable inclination angle is installed above the base, a screen frame is elastically connected to the upper portion of the frame, a screen plate is fixedly installed in the screen frame, and vibration motors are fixedly installed on the two sides of the screen frame. A plurality of sieve holes distributed in a matrix mode are formed in the sieve plate, a visual camera for conducting visual detection on the sieve holes in the sieve plate is installed on the base, and a shearing and reverse blowing assembly used for conducting shearing and reverse blowing dredging on sunflower seed materials blocked in the sieve holes is arranged above the sieve plate. According to the sunflower seed screening device, sunflower seed materials clamped in the screening holes can be sheared through cooperation of the rectangular plates and the edges of the screening holes, then the sunflower seed materials remaining in the screening holes are pressed down and reversely blown, and therefore dredging of the blocked screening holes can be completed.

Description

Technical Field

[0001] The present invention relates to the technical field of sorting screens, in particular to a dredging device for a sorting screen. Background Art

[0002] Sunflower seeds, the fruits of sunflower, can be eaten and used for oil. Sunflower seeds are one of the important oil crops with a yield second only to soybeans. Sunflower seeds have extremely high nutritional value, therapeutic value and medical value, and are used in a considerable amount. Currently, before shelling the sunflower seeds, a screening device is required to screen the sunflower seeds according to grade. In actual use, it has the advantages of simple operation, stable structure and good use effect.

[0003] When sunflower seed hulls are screened through a sorting sieve, the sieve holes on the sieve plate will be blocked due to the jamming of the sunflower seed hulls. When the number of blocked sieve holes increases, the screening effect of the sieve plate will be affected. Since some of the sunflower seed hulls are stuck in the sieve holes, and since the sieve plate is in a vibrating state during operation, the common sieve plate unclogging method is not suitable for unclogging the sieve plate for screening sunflower seed hulls during operation. Therefore, a unclogging device for a sorting sieve is proposed. Summary of the Invention

[0004] In order to solve the shortcomings of the prior art, the present invention proposes a dredging device for a sorting screen.

[0005] In order to achieve the above-mentioned purpose, the present invention adopts the following technical scheme: a dredging device for a sorting screen, comprising a base, a frame with an adjustable inclination angle is installed above the base, a screen frame is elastically connected to the top of the frame, a screen plate is fixedly installed in the screen frame, a vibration motor is fixedly installed on both sides of the screen frame, a plurality of sieve holes distributed in a matrix are provided on the sieve plate, a visual camera for visually inspecting the sieve holes on the sieve plate is installed on the base, and a shearing and backblowing component for shearing and backblowing sunflower seed materials blocked in the sieve holes is provided above the sieve plate.

[0006] Preferably, the shear back-blowing assembly includes two linear modules fixed to the bottom of the screen frame, connecting frames are fixedly installed on the sliders of the two linear modules, the bottom of the two connecting frames is fixedly installed with the same rectangular box, the bottom of the rectangular box is open, and the bottom of the rectangular box is fixedly installed with a rectangular plate that is slidably connected to the top of the screen plate, the top of the rectangular box is fixedly installed with a conduit, and the rectangular plate is provided with a plurality of linearly distributed downward push-back blowing mechanisms.

[0007] Preferably, the push-down back-blowing mechanism includes an arc-shaped plate that passes through the rectangular plate and is fixedly connected to the rectangular plate, and a cylinder that is fixedly connected to the inner wall of the top of the rectangular box. A round rod is slidably installed on the inner side of the cylinder, and a ball is embedded and rotatably installed on the bottom end of the round rod. A circular hole is opened on the arc-shaped plate and is coaxially arranged with the round rod above it. A spring 1 is fixedly installed on the top of the round rod, and the top of the spring 1 is fixedly connected to the inner wall of the top of the rectangular box.

[0008] Preferably, a cover plate fixedly mounted on the round rod is movably mounted on the bottom end of the cylinder, a plurality of air guide holes distributed in a matrix are provided on the arc-shaped plate, a plurality of limit rods are fixedly mounted on the inner wall of the cylinder, the limit rods are embedded in the side surface of the round rod and are slidably connected to the round rod.

[0009] Preferably, two rotating seats are fixedly installed on the top of the base, and the frame is rotatably installed between the two rotating seats.

[0010] Preferably, the frame and the base are connected by two adjustment mechanisms, and the adjustment mechanism includes a cylinder 1 fixed to the top of the base, and a cylinder 2 connected to the frame is installed above the cylinder 1, and the same double-headed screw is threadedly connected between the cylinder 2 and the cylinder 1.

[0011] Preferably, a top plate is fixedly installed on the top of the second cylinder, a slide rail is installed on the top of the top plate, a slide plate is slidably connected to the slide rail, a rotating shaft is rotatably installed on the slide plate, and the rotating shaft is rotatably connected to the frame.

[0012] Preferably, the frame and the screen frame are elastically connected via a plurality of springs distributed in a matrix.

[0013] Compared with the prior art, the present invention has the following beneficial effects: 1. The present invention can shear the sunflower seeds stuck in the sieve holes by cooperating with the rectangular plate and the edge of the sieve holes, and then press down and back-blow the sunflower seeds remaining in the sieve holes, thereby clearing the blocked sieve holes. 2. The push-down back-blow mechanism that automatically changes its shape ensures that compressed air will be discharged only when it passes through the blocked sieve holes. Under the condition of unchanged air intake volume, the concentrated ejection of compressed air can increase the thrust of the compressed air during ejection and reduce the waste of compressed air. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 The overall structure of the dredging device for the sorting screen proposed by the present invention is shown in FIG. Figure 1 ; Figure 2 The overall structure of the dredging device for the sorting screen proposed by the present invention is shown in FIG. Figure 2 ; Figure 3 for Figure 1 Schematic diagram of the enlarged structure of part A; Figure 4 for Figure 2 Schematic diagram of the enlarged structure of part B; Figure 5 This is a partial structural diagram of a shear backflush assembly in a dredging device for a sorting screen proposed by the present invention; Figure 6 This is a partial side sectional view of the shear back-blowing assembly of the dredging device of the sorting screen proposed by the present invention.

[0015] In the figure: 1. base; 2. frame; 3. screen frame; 4. screen plate; 41. screen hole; 5. shear back-blowing assembly; 51. linear module; 52. connecting frame; 53. rectangular box; 54. rectangular plate; 55. push-down back-blowing mechanism; 551. arc plate; 552. round hole; 553. air guide hole; 554. cylinder; 555. round rod; 556. cover plate; 557. ball; 558. spring 1; 559. limit rod; 56. guide tube; 6. vibration motor; 7. rotating seat; 8. adjustment mechanism; 81. cylinder 1; 82. cylinder 2; 83. double-headed screw; 84. top plate; 85. slide rail; 86. slide plate; 87. rotating shaft; 9. visual camera; 10. spring 2. DETAILED DESCRIPTION

[0016] The following will clearly and completely describe the technical solutions of the present invention in conjunction with the accompanying drawings. Obviously, the embodiments described are only some embodiments of the present invention, not all 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.

[0017] Please refer to Figures 1-6 The present invention provides a technical solution: a dredging device for a sorting screen, comprising a base 1, a frame 2 with an adjustable inclination angle is installed above the base 1, a screen frame 3 is elastically connected to the top of the frame 2, a screen plate 4 is fixedly installed in the screen frame 3, a vibration motor 6 is fixedly installed on both sides of the screen frame 3, a plurality of screen holes 41 distributed in a matrix are provided on the screen plate 4, a visual camera 9 for visually inspecting the screen holes 41 on the screen plate 4 is installed on the base 1, and a shearing and backblowing component 5 for shearing and backblowing sunflower seed materials blocked in the screen holes 41 is provided above the screen plate 4.

[0018] Furthermore, during the process of the sieve plate 4 vibrating and screening the sunflower seed material, if the visual camera 9 detects that the sunflower seed material in certain sieve holes 41 maintains the same running trajectory for a long time, it indicates that the sunflower seed material is stuck in the corresponding sieve hole 41.

[0019] The shear back-blowing assembly 5 includes two linear modules 51 fixed at the bottom of the screen frame 3, and a connecting frame 52 is fixedly installed on the slider of the two linear modules 51. The bottom of the two connecting frames 52 is fixedly installed with the same rectangular box 53. The bottom of the rectangular box 53 is open, and the bottom of the rectangular box 53 is fixedly installed with a rectangular plate 54 that is slidably connected to the top of the screen plate 4. A conduit 56 is fixedly installed through the top of the rectangular box 53, and a plurality of linearly distributed downward push-back blowing mechanisms 55 are provided on the rectangular plate 54.

[0020] Furthermore, the conduit 56 is used to connect to an external compressed gas source. When the shear blowback assembly 5 is working, the compressed gas source continuously supplies compressed gas to the rectangular box 53 through the conduit 56. The two linear modules 51 use the same control host, which can control the synchronous movement of the two linear modules 51. The linear module 51 is a prior art, and usually the slider moves on the guide rail by driving the lead screw or the synchronous belt by a motor. The specific structure can be referred to patent CN201820224185.8 or CN201820223449.8.

[0021] The push-down back-blowing mechanism 55 includes an arc-shaped plate 551 that passes through the rectangular plate 54 and is fixedly connected to the rectangular plate 54, and a cylinder 554 that is fixedly connected to the top inner wall of the rectangular box 53. A round rod 555 is slidably installed on the inner side of the cylinder 554, and a ball 557 is embedded and rotatably installed at the bottom end of the round rod 555. A circular hole 552 is provided on the arc-shaped plate 551 and is coaxially arranged with the round rod 555 above it. A spring 558 is fixedly installed on the top of the round rod 555, and the top of the spring 558 is fixedly connected to the top inner wall of the rectangular box 53.

[0022] A cover plate 556 fixedly mounted on the round rod 555 is movably mounted at the bottom end of the cylinder 554. A plurality of air guide holes 553 distributed in a matrix are provided on the arc plate 551. A plurality of limiting rods 559 are fixedly mounted on the inner wall of the cylinder 554. The limiting rods 559 are embedded in the side surface of the round rod 555 and are slidably connected to the round rod 555.

[0023] Furthermore, when there is no resistance below the ball 557, the cover plate 556 and the arc plate 551 are in a fitted state, and at this time, the part of the ball 557 passing through the circular hole 552 outside the arc plate 551 does not exceed half of itself. At this time, if the ball 557 is in the unobstructed sieve hole 41, the ball 557 will penetrate into the sieve hole 41 and remain tangent to the bottom surface of the sieve plate 4.

[0024] Two rotating seats 7 are fixedly mounted on the top of the base 1 , and the frame 2 is rotatably mounted between the two rotating seats 7 .

[0025] The frame 2 and the base 1 are connected by two adjusting mechanisms 8. The adjusting mechanism 8 includes a cylinder 1 81 fixed to the top of the base 1. A cylinder 2 82 connected to the frame 2 is installed above the cylinder 1 81. The cylinder 2 82 and the cylinder 1 81 are threadedly connected by the same double-headed screw 83.

[0026] A top plate 84 is fixedly installed on the top of the second cylinder 82, and a slide rail 85 is installed on the top of the top plate 84. A slide plate 86 is slidably connected to the slide rail 85, and a rotating shaft 87 is rotatably installed on the slide plate 86. The rotating shaft 87 is rotatably connected to the frame 2.

[0027] Furthermore, by twisting the double-headed screw 83, the distance between cylinder 2 82 and cylinder 1 81 can be adjusted, so that the frame 2 can rotate with the two rotating seats 7 as the center. During this process, the slide 86 follows the frame 2 to rotate around the two rotating seats 7. Since the position height and horizontal position of the rotating shaft 87 change, the slide 86 moves horizontally above the slide rail 85. During the process of the slide 86 sliding above the slide rail 85, the slide 86 and the rotating shaft 87 are in a relative rotation state, and finally the inclination angle of the frame 2 above the base 1 is adjusted, and the inclination angle of the screen plate 4 changes synchronously with the frame 2.

[0028] The frame 2 and the screen frame 3 are elastically connected via a plurality of springs 10 distributed in a matrix.

[0029] Furthermore, when the sunflower seed material is screened, the sunflower seed material falls on the top of the sieve plate 4, and the two vibration motors 6 are started to drive the sieve frame 3 and the sieve plate 4 to vibrate, and the sunflower seed material is shaken by the sieve plate 4 to complete the screening of the sunflower seed material.

[0030] In this embodiment: when the visual camera 9 detects that some of the sieve holes 41 are blocked by stuck sunflower seed materials, which affects the screening effect of the sieve plate 4, the vibration motor 6 is turned off to stop the screening work, and then compressed air is continuously supplied to the rectangular box 53 through an external compressed air source, and then the host is manually controlled to start the two linear modules 51. The sliders on the two linear modules 51 synchronously drive the two connecting frames 52 to move in the same direction and at the same speed. The two connecting frames 52 drive the rectangular box 53 to move on the top surface of the sieve plate 4. The rectangular box 53 drives the rectangular plate 54 to move on the top surface of the sieve plate 4. During the translation process, the shear force formed between the rectangular plate 54 and the edge of the sieve hole 41 can shear the sunflower seed materials stuck in the sieve hole 41; When the sunflower seed material stuck in the sieve hole 41 is sheared by the rectangular plate 54 and the sieve hole 41 but is still stuck in the sieve hole 41, the rectangular plate 54 drives the downward push back-blow mechanism 55 to move above the sieve hole 41 blocked by the sunflower seed material, and the ball 557 thereon abuts against the sunflower seed material. At this time, the cover plate 556 is separated from the arc-shaped plate 551, and a certain distance is maintained between the two. Without the cover of the cover plate 556, the compressed air in the rectangular box 53 is ejected through the multiple air guide holes 553, thereby back-blowing the sunflower seed material blocked in the sieve hole 41, and the downward pressure generated by the compressed spring 558 on the ball 557 can push out the sunflower seed material stuck in the sieve hole 41. When the push-down back-blow mechanism 55 is located above the portion of the sieve plate 4 where the sieve holes 41 are not formed, although there is a gap between the cover plate 556 and the curved plate 551, the bottoms of the air guide holes 553 are covered by the sieve plate 4. Therefore, the compressed air in the rectangular box 53 cannot be ejected through the multiple air guide holes 553 blocked by the sieve plate 4. When the push-down back-blow mechanism 55 is in the sieve hole 41 that is not blocked by the sunflower seeds, the compressed spring 1 558 pushes the round rod 555 downward. At this time, the ball 557 penetrates into the sieve hole 41, and the cover plate 556 moves downward with the round rod 555 and fits into the curved plate 551. At this time, the compressed air in the rectangular box 53 cannot be ejected through the multiple air guide holes 553 covered by the cover plate 556. In summary, the multiple downward push-back blowing mechanisms 55 will only spray compressed air to back-blow and clear the sieve holes 41 blocked by the sunflower seed material when passing through the sieve holes 41.

[0031] The above description is only a preferred specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any technician familiar with the technical field, within the technical scope disclosed by the present invention, who makes equivalent replacements or changes based on the technical solution and inventive concept of the present invention, should be covered by the scope of protection of the present invention.

Claims

1. A dredging device for a sorting screen, comprising a base (1), characterized in that: A frame (2) with an adjustable tilt angle is installed above the base (1), a screen frame (3) is elastically connected to the top of the frame (2), a screen plate (4) is fixedly installed in the screen frame (3), a vibration motor (6) is fixedly installed on both sides of the screen frame (3), a plurality of screen holes (41) distributed in a matrix are opened on the screen plate (4), a visual camera (9) for visually inspecting the screen holes (41) on the screen plate (4) is installed on the base (1), and a shearing and back-blowing component (5) for shearing and back-blowing sunflower seed material blocked in the screen hole (41) is provided above the screen plate (4).

2. The dredging device for a sorting screen according to claim 1, characterized in that: The shear back-blowing assembly (5) includes two linear modules (51) fixed on the bottom of the screen frame (3), a connecting frame (52) is fixedly installed on the sliders of the two linear modules (51), and the bottom of the two connecting frames (52) is fixedly installed with the same rectangular box (53), the bottom of the rectangular box (53) is open, and the bottom of the rectangular box (53) is fixedly installed with a rectangular plate (54) that is slidably connected to the top of the screen plate (4), the top of the rectangular box (53) is fixedly installed with a conduit (56), and the rectangular plate (54) is provided with a plurality of linearly distributed downward push-back blowing mechanisms (55).

3. The dredging device for a sorting screen according to claim 2, characterized in that: The push-down back-blowing mechanism (55) includes an arc-shaped plate (551) that passes through the rectangular plate (54) and is fixedly connected to the rectangular plate (54), and a cylinder (554) that is fixedly connected to the top inner wall of the rectangular box (53). A round rod (555) is slidably installed on the inner side of the cylinder (554), and a ball (557) is embedded and rotatably installed at the bottom end of the round rod (555). A circular hole (552) is provided on the arc-shaped plate (551) that is coaxial with the round rod (555) above it. A spring (558) is fixedly installed on the top end of the round rod (555), and the top end of the spring (558) is fixedly connected to the top inner wall of the rectangular box (53).

4. The dredging device for a sorting screen according to claim 3, characterized in that: A cover plate (556) fixedly mounted on the round rod (555) is movably mounted on the bottom end of the cylinder (554); a plurality of air guide holes (553) distributed in a matrix are provided on the arc-shaped plate (551); a plurality of limiting rods (559) are fixedly mounted on the inner wall of the cylinder (554); the limiting rods (559) are embedded in the side surface of the round rod (555) and are slidably connected to the round rod (555).

5. The dredging device for a sorting screen according to claim 1, characterized in that: Two rotating seats (7) are fixedly mounted on the top of the base (1), and the frame (2) is rotatably mounted between the two rotating seats (7).

6. The dredging device for a sorting screen according to claim 5, characterized in that: The frame (2) and the base (1) are connected via two adjustment mechanisms (8), wherein the adjustment mechanism (8) comprises a cylinder 1 (81) fixed to the top of the base (1), a cylinder 2 (82) connected to the frame (2) is mounted above the cylinder 1 (81), and a double-headed screw (83) is threadedly connected between the cylinder 2 (82) and the cylinder 1 (81).

7. The dredging device for a sorting screen according to claim 6, characterized in that: A top plate (84) is fixedly mounted on the top of the second cylinder (82), a slide rail (85) is mounted on the top of the top plate (84), a slide plate (86) is slidably connected to the slide rail (85), a rotating shaft (87) is rotatably mounted on the slide plate (86), and the rotating shaft (87) is rotatably connected to the frame (2).

8. The dredging device for a sorting screen according to claim 1, characterized in that: The frame (2) and the screen frame (3) are elastically connected via a plurality of springs (10) distributed in a matrix.

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