Material screening machine

Abstract

The utility model provides a material screening machine which comprises a feeding conveying belt, a CCD camera, a rotary material disc, a blanking well and a plurality of discharging conveying belts. Wherein the feeding conveyor belt is used for conveying materials into the rotary tray; the rotary charging tray is used for rotationally conveying the materials to the position below the CCD camera and then conveying the materials subjected to photographing detection to the mouth of the blanking well; a plurality of openings are formed in the well wall of one side of the blanking well, a movable baffle is arranged on the inner side of each opening, and an inclined sliding plate is arranged on the outer side of each opening; the multiple discharging conveying belts are arranged at the bottoms of the inclined sliding plates in a one-to-one correspondence mode. The material screening machine is suitable for screening non-standard products, is not influenced by factors such as non-uniform density and complex appearance of materials, and selects to open the movable baffle plate according to a CCD (Charge Coupled Device) photographing detection result to prevent the materials falling from a blanking well from reaching a corresponding blanking conveyor belt from a correct opening, so that the screening process is finished.

Description

TECHNICAL FIELD

[0001] The utility model relates to material screening technical field, concretely relates to a material screening machine. BACKGROUND

[0002] The screening demand of small material is very extensive, such as the screening of food raw material, the screening of small hardware such as screw, the screening of building material such as stone. The common screening method at present is to screen out material of different weight through vibration, but vibration screening is more suitable for industrial standard product. Food raw material is difficult to be classified through vibration screening method. And the composition and appearance of stone material are very complex, which is also not suitable for vibration screening. SUMMARY

[0003] In view of the defects of the background art, the utility model provides a material screening machine, which is suitable for screening non-standard product and is not affected by factors such as uneven material density and complex appearance.

[0004] The utility model provides a material screening machine, which comprises a feeding conveyor belt, a CCD camera, a rotary tray, a material falling well and a plurality of discharging conveyor belts.

[0005] The feeding conveyor belt is used to convey material into the rotary tray.

[0006] The rotary tray is used to convey material to the lower side of the CCD camera, and then convey the material detected by photographing to the well mouth of the material falling well.

[0007] The side wall of the material falling well is provided with a plurality of openings, the inner side of each opening is provided with an active baffle, and the outer side of each opening is provided with an inclined sliding plate.

[0008] The plurality of discharging conveyor belts are arranged one by one at the bottom of each inclined sliding plate.

[0009] Preferably, a single conveyor belt is arranged between the feeding conveyor belt and the rotary tray.

[0010] The conveying surface of the single conveyor belt is laterally inclined, and the lower side is provided with a baffle.

[0011] Preferably, the material screening machine further comprises a feeding hopper and a material returning chute.

[0012] The feeding conveyor belt is upwardly inclined, the bottom end of the feeding conveyor belt is inserted into the feeding hopper, and the top end is located above the feeding end of the single conveyor belt.

[0013] The material returning chute is located below the single conveyor belt and extends downwardly to above the feeding hopper, and is used to recover the material falling from the single conveyor belt.

[0014] Preferably, the discharge end of the feeding conveying belt is located above the feeding end of the single-file conveying belt, and a hopper is arranged between the discharge end of the feeding conveying belt and the feeding end of the single-file conveying belt.

[0015] Preferably, the periphery of the material falling well is provided with a shutter switch corresponding to each movable shutter, and the shutter switch is used for selectively opening the corresponding movable shutter according to the detected grade of the material entering the material falling well.

[0016] Preferably, the movable shutter is provided with a support shaft, and the support shaft is rotatably installed on the well wall of the material falling well.

[0017] The shutter switch is provided with a telescopic rod controlled by electromagnetism, one end of the support shaft is bent to form a short rod after penetrating out of the well wall, and the outer end of the short rod is hingedly connected with the telescopic rod.

[0018] Preferably, the material screening machine is provided with a plurality of detection lines, each detection line comprising a single-file conveying belt, a CCD camera, a rotary disc and a material falling well.

[0019] Preferably, the discharge end of each discharging conveying belt is provided with a material bucket.

[0020] Preferably, the rotary disc comprises a disc body and a stirring rod, and the stirring rod is rotatably arranged in the disc body.

[0021] The disc body is sequentially provided with a to-be-inspected area, a detection area and a discharging area in the circumferential direction, the to-be-inspected area is used for receiving the material conveyed by the single-file conveying belt, the to-be-inspected area is located directly below the CCD camera, the discharging area is provided with a hole in the bottom, and the hole is communicated with the material falling well through a slide.

[0022] The beneficial effects of the material screening machine include that the movable shutter is selectively opened according to the CCD photographing detection result, the material falling in the material falling well reaches the corresponding discharging conveying belt through the correct opening, and thus the screening process is completed; the stacked excess material is dropped when passing through the single-file conveying belt, and the retained material is arranged in a file and detected one by one; the material enters the hopper before entering the single-file conveying belt, the hopper reduces the number of materials falling on the single-file conveying belt at the same time, and is beneficial to arranging the materials in a file and improving the material queuing efficiency. BRIEF DESCRIPTION OF DRAWINGS

[0023] The utility model will be explained in detail below by combining with the embodiment and the drawings, in which:

[0024] Figure 1 It is the perspective view of the material screening machine of the utility model.

[0025] Figure 2 It is the structural schematic view of the single-file conveying belt of the utility model.

[0026] Figure 3 It is the structural schematic view of the rotary disc of the utility model.

[0027] Figure 4 Figure 1 is an assembly schematic view of the rotary tray, the material falling well and the material discharging conveyor belt of the utility model.

[0028] Reference signs:

[0029] 1 - material feeding conveyor belt, 2 - CCD camera, 3 - rotary tray, 31 - tray body, 32 - material stirring rod, 33 - detection area, 34 - detection area, 35 - material discharging area, 4 - material falling well, 41 - movable baffle, 411 - pivot shaft, 412 - short rod, 42 - inclined sliding plate, 43 - baffle switch, 431 - telescopic rod, 5 - material discharging conveyor belt, 6 - single column conveyor belt, 61 - baffle, 62 - feeding hopper, 63 - material returning chute, 64 - funnel, 7 - material bucket. DETAILED DESCRIPTION

[0030] In order to make the technical problems, technical schemes and beneficial effects of the utility model clearer and more apparent, the utility model will be further described in detail below in combination with the drawings and examples. It should be understood that the specific examples described herein are only used to explain the utility model and not to limit the utility model.

[0031] Therefore, one feature described in the specification will be used to explain one feature of one embodiment of the utility model, and it is not implied that each embodiment of the utility model must have the described feature. In addition, it should be noted that the specification describes many features. Although certain features can be combined together to show possible system designs, these features can also be used in other combinations that are not explicitly described. Therefore, unless otherwise stated, the described combinations are not intended to be limiting.

[0032] The principles of the utility model will be described in detail below in combination with the drawings and examples.

[0033] The utility model provides a kind of material screening machine, including material feeding conveyor belt 1, CCD camera 2, rotary tray 3, material falling well 4 and multiple material discharging conveyor belt 5;Wherein material feeding conveyor belt 1 is used to deliver material to rotary tray 3;Rotary tray 3 is used to rotate and deliver material to the below of CCD camera 2, and then deliver the material after being detected by photograph to the well mouth of material falling well 4;The side well wall of material falling well 4 is equipped with multiple openings, the inside of each opening is equipped with 1 movable baffle 41, and the outside of each opening is equipped with 1 inclined sliding plate 42;Multiple material discharging conveyor belt 5 is one by one corresponding and arranged at the bottom of each inclined sliding plate 42.Material screening machine opens movable baffle 41 according to CCD photographic detection result, and the material falling in material falling well 4 reaches corresponding material discharging conveyor belt 5 from correct opening, to complete screening process.

[0034] In the embodiment, a single-file conveying belt 6 is further arranged between the feeding conveying belt 1 and the rotary tray 3. The conveying surface of the single-file conveying belt 6 is laterally inclined, and the lower side is provided with a baffle 61. When the materials pass through the single-file conveying belt 6, the excess materials stacked thereon will fall off, and the remaining materials will be arranged in a file for detection one by one.

[0035] In the embodiment, the material screening machine further comprises a feeding hopper 62 and a return chute 63. The material screening machine is provided with two feeding conveying belts 1, which are arranged in an upward inclination, and the bottom end is inserted into the feeding hopper 62, and the top end is located above the feeding end of the single-file conveying belt 6, so as to convey the materials in the feeding hopper 62 to the single-file conveying belt 6 in a high lifting manner. The return chute 63 is located below the single-file conveying belt 6 and extends downward to above the feeding hopper 62, so as to recover the materials falling off from the single-file conveying belt 6 and send them back to the feeding hopper 62 by using the gravity of the materials themselves.

[0036] The discharging end of the feeding conveying belt 1 is located above the feeding end of the single-file conveying belt 6, and a hopper 64 is arranged between the discharging end of the feeding conveying belt 1 and the feeding end of the single-file conveying belt 6. The materials will enter the hopper 64 before entering the single-file conveying belt 6, which can reduce the number of materials falling onto the single-file conveying belt 6 at the same time, so as to arrange the materials in a file and improve the material queuing efficiency. In addition, the hopper 64 can also reduce the number of materials falling into the return chute 63.

[0037] In the embodiment, the rotary tray 3 comprises a tray body 31 and a material pushing rod 32, and the material pushing rod 32 is arranged in the tray body 31 in a rotating manner. The tray body 31 is sequentially provided with a detection area 33, a detection area 34 and a discharging area 35 in a circumferential direction. The detection area 33 is used for receiving the materials conveyed by the single-file conveying belt 6, and the detection area 33 is located directly below the CCD camera 2. The bottom of the discharging area 35 is provided with an opening and communicates with the material falling well 4 through a slide. The material pushing rod 32 rotates intermittently, pushes the materials in the detection area 33 to the detection area 34 for photographing detection, then pushes the materials after detection to the discharging area 35 to fall into the slide, and then enters the material falling well 4 through the slide.

[0038] In the embodiment, the periphery of the blanking well 4 is provided with one shutter switch 43 corresponding to each movable shutter 41, and the shutter switch 43 is used to selectively open the corresponding movable shutter 41 according to the detection level of the material entering the blanking well 4. The movable shutter 41 is provided with a support shaft 411 rotatably installed on the well wall of the blanking well 4. The shutter switch 43 is provided with a telescopic rod 431 controlled by electromagnet, and one end of the support shaft 411 is bent to form a short rod 412 after passing through the well wall, and the outer end of the short rod 412 is hinged to the telescopic rod 431. When the classification of the material is detected and determined, the shutter switch 43 corresponding to the classification is triggered to start, and the telescopic rod 431 of the shutter switch 43 pushes the short rod 412 to drive the support shaft 411 to rotate, so that the movable shutter 41 seals the blanking well 4; the movable shutter 41 has an inclination when sealing the blanking well 4, and the material slides along the movable shutter 41 to the inclined slide plate 42 through the opening of the well wall, and then slides to the correct unloading conveyor 5 under the action of gravity. Therefore, one shutter switch 43, one movable shutter 41, one inclined slide plate 42 and one unloading conveyor 5 form one classification group, and different classifications of materials pass through different classification groups and fall on different unloading conveyors 5. The discharge end of each unloading conveyor 5 is provided with one material barrel 7, and the final material is classified and collected into different material barrels 7.

[0039] In the embodiment, the material screening machine is provided with six detection lines, which can greatly increase the sorting speed. Each detection line includes one single-column conveyor 6, one CCD camera 2, one rotating tray 3 and one blanking well 4. The materials detected by the six detection lines are collected into the unloading conveyors 5 corresponding to the classification and distribution. In order to fully utilize the space, the six material barrels 7 of the embodiment are arranged on both sides of the unloading conveyor 5, and the unloading conveyor 5 is divided into two groups and conveyed to both sides of the material screening machine.

[0040] The above only describes the preferred embodiment of the present application, and is not intended to limit the present application. Any modification, equivalent replacement and improvement made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A material screening machine characterized by, Including the feeding conveyor belt, the CCD camera, the rotary tray, the material falling well and multiple unloading conveyor belts, wherein, The feeding conveyor belt is used to deliver materials into the rotary tray; The rotary tray is used to deliver materials to the lower side of the CCD camera, and then deliver the materials after being photographed and detected to the well mouth of the material falling well; The side wall of the material falling well is provided with multiple openings, the inner side of each opening is provided with a movable baffle, and the outer side of each opening is provided with an inclined sliding plate; The multiple unloading conveyor belts are arranged one by one at the bottom of each inclined sliding plate.

2. The material screening machine of claim 1, wherein, A single conveyor belt is further arranged between the feeding conveyor belt and the rotary tray; The conveying surface of the single conveyor belt is laterally inclined, and the lower side is provided with a baffle.

3. The material screening machine of claim 2, wherein, The material screening machine further comprises a feeding hopper and a return chute; The feeding conveyor belt is arranged upwardly, the bottom end of the feeding conveyor belt is inserted into the feeding hopper, and the top end is located above the feeding end of the single conveyor belt; The return chute is located below the single conveyor belt and extends downwardly to above the feeding hopper, and is used to recover the materials falling from the single conveyor belt.

4. The material screening machine of claim 3, wherein, The discharging end of the feeding conveyor belt is located above the feeding end of the single conveyor belt, and a funnel is arranged between the discharging end of the feeding conveyor belt and the feeding end of the single conveyor belt.

5. The material screening machine of claim 4, wherein, The outer periphery of the material falling well is provided with a baffle switch corresponding to each movable baffle, and the baffle switch is used to selectively open the corresponding movable baffle according to the detection grade of the materials entering the material falling well.

6. The material screening machine of claim 5, wherein, The movable baffle is provided with a support shaft on the rotating side, and the support shaft is rotatably installed on the well wall of the material falling well; The baffle switch is provided with a telescopic rod controlled by electromagnetism, one end of the support shaft is bent to form a short rod after penetrating out of the well wall, and the outer end of the short rod is hingedly connected with the telescopic rod.

7. The material screening machine of claim 5, wherein, The material screening machine is provided with multiple detection lines, each detection line comprising a single conveyor belt, a CCD camera, a rotary tray and a material falling well.

8. The material screening machine of claim 7, wherein, The discharging end of each unloading conveyor belt is provided with a material bucket.

9. The material screening machine of claim 2, wherein, The rotary tray comprises a disc body and a material stirring rod, and the material stirring rod is rotatably arranged in the disc body; The disc body is sequentially provided with a detection area, a detection area and a discharging area along the circumference, the detection area is used to receive the materials delivered by the single conveyor belt, the detection area is located directly below the CCD camera, and the discharging area is provided with an opening at the bottom and is communicated with the material falling well through a chute.

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