CN110732486B - Shell sieving mechanism - Google Patents

Abstract

The invention provides a shell screening device, and belongs to the technical field of shell screening equipment. The device comprises a device body, a feeding pipe, a filter screen, a conveyor belt, a guide mechanism and a weight screening mechanism, wherein an installation cavity is formed in the device body, the feeding pipe is arranged at the top of the device body, the lower end of the feeding pipe is communicated with the installation cavity, the filter screen is hinged in the installation cavity through a hinge shaft, a vibration motor is fixedly arranged in the installation cavity, the vibration motor is fixedly connected with the lower side face of the filter screen, the conveyor belt is horizontally arranged in the installation cavity, the left end of the conveyor belt is positioned below the right side edge of the filter screen, the guide mechanism can divide shells on the conveyor belt into a plurality of rows and sequentially moves to the right end of the conveyor belt one by one, and the weight screening mechanism can classify the shells moving to the right end of the conveyor belt according to the weight. The invention can screen according to the weight of the shells and has simple operation.

Description

Shell sieving mechanism

Technical Field

The invention belongs to the technical field of shell screening equipment, and relates to a shell screening device.

Background

The shells are favored by people because of their unique shapes, the shells have size differences, which cause the shells to be unfavorable for production, storage and commercialization, and the shells are packaged in stages according to the sizes, so that not only can the requirements of quartz with different layers be met, but also the commodity value of the shells can be increased, the damage caused by the selection of customers in the sales can be avoided, and the subsequent processing can be facilitated.

At present, most areas of China still adopt manual classification, so that the labor intensity of workers is high, the classification precision is low, and the classification efficiency is low; or a roller screen type classifier, a roller type classifier and the like are adopted, so that the technology content is low, the mechanization level is low, the shell damage is serious, the classification standards are different, and the classification effect is poor.

Disclosure of Invention

The invention aims to solve the problems in the prior art, and provides a shell screening device which can screen according to the weight of shells and is simple in structure and convenient to operate.

The aim of the invention can be achieved by the following technical scheme:

a shell screening device comprising: the device comprises a device body, wherein an installation cavity is arranged in the device body;

The feeding pipe is arranged at the top of the device body, and the lower end of the feeding pipe is communicated with the mounting cavity;

The filter screen is hinged in the installation cavity through a hinge shaft, the filter screen is positioned below the feeding pipe, the filter screen is in a tilting state with high left and low right, a vibration motor is fixedly arranged in the installation cavity, and the vibration motor is fixedly connected with the lower side face of the filter screen;

the conveying mechanism is arranged in the feeding pipe and can enable shells in the feeding pipe to uniformly fall onto the filter screen;

The conveying belt is horizontally arranged in the mounting cavity, and the left end of the conveying belt is positioned below the right side edge of the filter screen;

The guide mechanism is arranged above the conveyor belt and can divide shells on the conveyor belt into a plurality of rows, and the shells in each row sequentially move to the right end of the conveyor belt one by one;

Weight screening mechanism, weight screening mechanism sets up the right side at the conveyer belt, weight screening mechanism can classify the shell that removes to the conveyer belt right-hand member according to the size of weight.

In the above-mentioned shell screening device, the conveying mechanism includes:

the upper end of the first conical pipe is fixedly connected with the inner side wall of the feeding pipe, and the upper end of the second conical pipe is fixedly connected with the inner side wall of the feeding pipe;

The first rotating shaft is coaxially and rotatably arranged in the feeding pipe, a plurality of first inclined rods are fixedly arranged on the first rotating shaft along the circumferential direction, the plurality of first inclined rods are positioned between the first conical pipe and the second conical pipe, a plurality of second inclined rods are fixedly arranged on the first rotating shaft along the circumferential direction, and the plurality of second inclined rods are positioned below the second conical pipe;

The motor is fixedly arranged at the top of the device body through a bracket and is in transmission connection with the first rotating shaft.

In the above-mentioned shell screening device, guiding mechanism includes:

the support rods are horizontally and fixedly arranged in the mounting cavity, and the two ends of the support rods are vertically arranged on the front side wall and the rear side wall of the mounting cavity;

The baffle is parallel and the interval evenly sets firmly on the bracing piece, the baffle is parallel with the length direction of conveyer belt, form the clearance between baffle and the conveyer belt, form the guide way between two adjacent baffles, be equipped with stirring structure and limit structure in the guide way, the conveyer belt is at the in-process that removes, stirring structure can stir the shell on the conveyer belt, limit structure can make the shell in the guide way remove to the right-hand member of conveyer belt one by one in proper order.

In the above-mentioned shell sieving mechanism, stirring structure includes:

the second rotating shaft is horizontally arranged between two adjacent partition boards in a rotating mode, and a plurality of stirring rods are arranged on the second rotating shaft along the circumferential direction.

In the above-mentioned shell sieving mechanism, limit structure includes:

the third rotating shaft is horizontally and rotatably arranged between two adjacent partition plates;

The guide plate is fixedly arranged on the third rotating shaft, and the distance from the left side edge of the guide plate to the conveyor belt is greater than the distance from the right side edge of the guide plate to the conveyor belt;

The limiting plate is horizontally and fixedly arranged between two adjacent partition plates, the limiting plate is positioned above the right side edge of the guide plate, a reset spring is fixedly arranged on the lower side face of the limiting plate, and the lower end of the reset spring is fixedly connected with the right side of the guide plate.

In the above-mentioned shell sieving mechanism, weight screening mechanism includes a plurality of screening structure, and a plurality of screening structure and a plurality of direction passageway one-to-one, the screening structure is located the right side of corresponding direction passageway, the screening structure includes:

The first sliding plate is obliquely arranged in the mounting cavity, the distance from the left side edge of the first sliding plate to the bottom of the mounting cavity is smaller than the distance from the right side edge of the first sliding plate to the bottom of the mounting cavity, and the first sliding plate is positioned below the right end of the conveying belt;

The second sliding plate is obliquely arranged in the mounting cavity, the distance from the left side edge of the second sliding plate to the bottom of the mounting cavity is larger than the distance from the right side edge of the second sliding plate to the bottom of the mounting cavity, and the second sliding plate is positioned on the right side of the first sliding plate;

The shell conveying device comprises a rotating structure, wherein the rotating structure is arranged between a first sliding plate and a second sliding plate, when the weight of the shell falling from the right end of a conveying belt is small, the shell can be conveyed onto the second sliding plate by the rotating structure, and when the weight of the shell falling from the right end of the conveying belt is large, the shell can be conveyed onto the first sliding plate by the rotating structure.

In the above-mentioned shell sieving mechanism, the revolution mechanic includes:

the two support plates are arranged at the bottom of the mounting cavity in parallel;

The rotating plate is rotatably arranged between the two supporting plates through a fourth rotating shaft, and the axial direction of the fourth rotating shaft is perpendicular to the front side wall and the rear side wall of the mounting cavity;

The counterweight structure is arranged on the lower side face of the rotating plate, the counterweight structure is positioned on the right side of the fourth rotating shaft, when the shell weight of the right end of the conveyor belt is small, the rotating plate is in a tilting state with high left and low right by the counterweight structure, the right side of the rotating plate is flush with the left side of the second sliding plate in a butt joint mode, and when the shell weight of the shell falling from the right end of the conveyor belt is large, the rotating plate is in a tilting state with low left and high right by the counterweight structure, and the left side of the rotating plate is flush with the right side of the first sliding plate in a butt joint mode.

In the above-mentioned shell sieving mechanism, the counter weight structure includes:

The screw rod is arranged on the lower side surface of the rotating plate in parallel through the two fixing plates, the screw rod is positioned on the right side of the fourth rotating shaft, and the length direction of the screw rod is parallel to the cross section of the fourth rotating shaft;

the balancing weight is in threaded connection with the screw rod.

In the shell screening device, the left side and the right side of the rotating plate are respectively provided with a lower notch, the right side of the first sliding plate is provided with an upper notch, the left side of the second sliding plate is provided with an upper notch, when the rotating plate rotates to be in butt joint with the second sliding plate, the lower notch on the right side of the rotating plate is attached to the upper notch on the left side of the second sliding plate, and when the rotating plate rotates to be in butt joint with the first sliding plate, the lower notch on the left side of the rotating plate is attached to the upper notch on the right side of the first sliding plate.

In the shell screening device, the bottom of the installation cavity is provided with the waste material frame, the first material receiving frame and the second material receiving frame, the waste material frame is located under the filter screen, the first material receiving frame is located under the left side edge of the first sliding plate, and the second material receiving frame is located under the right side edge of the second sliding plate.

Compared with the prior art, the invention has the following advantages:

1. Putting shells into a feed pipe, starting a conveying mechanism to enable the shells in the feed pipe to uniformly fall onto a filter screen, starting a vibration motor to enable the filter screen to vibrate, enabling broken shells to fall through the filter screen, enabling the shells on the filter screen to slide down to the left end of a conveyor belt, separating the shells into a plurality of rows by a guide mechanism, enabling the shells in each row to be sequentially moved to the right end of the conveyor belt one by one, and finally classifying the shells moved to the right end of the conveyor belt according to the weight through a weight screening mechanism, so that the trouble of manual selection is avoided, the operation is simple, and time and labor are saved;

2. Starting a motor to drive a first rotating shaft, a first inclined rod and a second inclined rod to rotate, enabling shells to slide downwards along a first conical tube, then enabling the first inclined rod to stir the shells sliding downwards along a second conical tube, enabling the shells sliding downwards along the second conical tube to be stirred again by the second inclined rod, enabling the shells to uniformly fall down, preventing the lower end of a feeding tube from being blocked, and adjusting the falling speed of the shells by controlling the rotating speed of the first rotating shaft, so that the structure is simple;

3. The shells slide down onto the conveyor belt and are separated into a plurality of rows by the baffle plates, so that the shells are prevented from being stacked together to influence the next screening, the shells on the conveyor belt move rightwards and are contacted with the stirring rod on the second rotating shaft, the stirring rod rotates to separate the stacked shells, the shells after separation continue to move rightwards along the guide channel, and as the limiting plates are in a tilting state with high left and low right, the shells can only pass through the limiting plates one by one at the right side of the limiting plates, and the structure is simple; in addition, when the shell is bigger, the shell contacts with the right side of the limiting plate and extrudes, the right side of the limiting plate is pushed to rotate upwards, the reset spring is compressed, the distance from the right side of the limiting plate to the conveyor belt is increased, the shell can smoothly pass through, the shell is prevented from being crushed by the extrusion of the limiting plate, the integrity of the shell is improved, after the shell passes through, the right side of the limiting plate moves downwards to return to the initial position under the action of the reset spring, and the smaller shells are prevented from being stacked together to pass through the limiting plate, so that the screening effect is influenced;

4. The balancing weight is rotated, make the balancing weight remove the one end that the fourth pivot was kept away from to the screw rod, make the rotation board keep high right low inclination, and the right side of rotation board and the left side butt joint parallel and level of second slide, when the less shell of weight drops to the rotation board on, because the effect of balancing weight, the rotation board does not take place to rotate, the less shell of weight slides to the second along the second slide in receiving the material frame, when the great shell of weight drops to the rotation board on, the rotation board anticlockwise rotates round the fourth pivot, the right side butt joint parallel and level of messenger's rotation board and the right side butt joint parallel and level of first slide, the great shell of weight is along first slide gliding to first receiving in the frame, through the position of adjusting the balancing weight, can come out with the shell screening of different weight, it is simple high-efficient.

Drawings

FIG. 1 is a schematic diagram of the structure of the present invention;

FIG. 2 is a cross-sectional view at A-A in FIG. 1;

fig. 3 is a partial enlarged view of B in fig. 1;

FIG. 4 is an enlarged view of a portion of FIG. 1 at C;

fig. 5 is a schematic view of the structure of a heavier shell falling onto a rotating plate.

In the figure, 1, a device body; 11. a mounting cavity; 2. a feed pipe; 21. a first conical tube; 22. a second tapered tube; 3. a first rotating shaft; 31. a first diagonal bar; 32. a second diagonal bar; 33. a motor; 4. a filter screen; 41. a hinge shaft; 42. a baffle; 43. a vibration motor; 44. a waste frame; 5. a conveyor belt; 6. a partition plate; 61. a support rod; 62. a guide channel; 63. a second rotating shaft; 631. a stirring rod; 64. a guide plate; 641. a third rotating shaft; 65. a limiting plate; 651. a return spring; 66. a gap; 7. a fourth rotating shaft; 71. a rotating plate; 711. a lower notch; 72. a screw; 721. balancing weight; 722. a fixing plate; 73. a support plate; 8. a first fixing rod; 81. a first slide plate; 811. an upper notch; 82. a first material receiving frame; 9. a second fixing rod; 91. a second slide plate; 92. and a second material receiving frame.

Detailed Description

The following are specific embodiments of the present invention and the technical solutions of the present invention will be further described with reference to the accompanying drawings, but the present invention is not limited to these embodiments.

As shown in fig. 1 to 5, a shell screening apparatus includes an apparatus body 1, a feed pipe 2, a filter screen 4, a conveying mechanism, a conveyor belt 5, a guide mechanism, and a weight screening mechanism.

A rectangular mounting cavity 11 is arranged in the device body 1.

The feeding pipe 2 is vertically arranged at the top of the device body 1, the lower end of the feeding pipe 2 is communicated with the installation cavity 11, and preferably, the feeding pipe 2 is a conical pipe with a large upper part and a small lower part.

The filter screen 4 articulates in installation cavity 11 through articulated shaft 41, the axial of articulated shaft 41 is mutually perpendicular with the front and back lateral wall in installation cavity 11, filter screen 4 is located the below of inlet pipe 2, filter screen 4 is the low incline condition in left and right, vibration motor 43 has set firmly in the installation cavity 11, vibration motor 43 links firmly with the downside of filter screen 4, be equipped with baffle 42 on the left side of filter screen 4.

The conveying mechanism is arranged in the feeding pipe 2, and the conveying mechanism can enable shells in the feeding pipe 2 to uniformly fall onto the filter screen 4.

The conveyer belt 5 is horizontally arranged in the installation cavity 11, and the left end of the conveyer belt 5 is positioned below the right side edge of the filter screen 4.

The guiding mechanism is arranged above the conveyor belt 5, the guiding mechanism can divide shells on the conveyor belt 5 into a plurality of rows, and the shells in each row sequentially move to the right end of the conveyor belt 5 one by one.

The weight screening mechanism is arranged on the right side of the conveyor belt 5, and the weight screening mechanism can classify shells moving to the right end of the conveyor belt 5 according to the weight.

The shell is placed in the feed pipe 2, the conveying mechanism is started, the shells in the feed pipe 2 uniformly fall onto the filter screen 4, the vibration motor 43 is started simultaneously, the filter screen 4 vibrates, broken shells fall down through the filter screen 4, the shells on the filter screen 4 slide down to the left end of the conveying belt 5 and are separated into a plurality of rows by the guide mechanism, the shells in each row are sequentially moved to the right end of the conveying belt 5 one by one, finally, the shells moving to the right end of the conveying belt 5 are classified according to the weight through the weight screening mechanism, the trouble of manual selection is avoided, the operation is simple, and the time and labor are saved.

Specifically, the conveying mechanism includes a first conical tube 21, a second conical tube 22, a first rotating shaft 3, and a motor 33.

The upper end of the first conical pipe 21 is fixedly connected with the inner side wall of the feeding pipe 2, and the upper end of the second conical pipe 22 is fixedly connected with the inner side wall of the feeding pipe 2.

The first rotating shaft 3 is coaxially arranged in the feeding pipe 2 through the fixing frame in a rotating mode, the first rotating shaft 3 is fixedly provided with a plurality of first inclined rods 31 along the circumferential direction, preferably, the first inclined rods 31 are located between the first conical pipe 21 and the second conical pipe 22, the first inclined rods 31 are gradually inclined downwards from the center to the periphery, the first rotating shaft 3 is fixedly provided with a plurality of second inclined rods 32 along the circumferential direction, the second inclined rods 32 are located below the second conical pipe 22, and the second inclined rods 32 are gradually inclined downwards from the center to the periphery.

The motor 33 is fixedly arranged at the top of the device body 1 through a bracket, an output shaft of the motor 33 is fixedly connected with the upper end of the first rotating shaft 3, and the motor 33 is electrically connected with an external power supply.

Starting the motor 33 to drive the first rotating shaft 3, the first inclined rod 31 and the second inclined rod 32 to rotate, enabling the shells to slide downwards along the first conical tube 21, then enabling the shells to slide downwards along the second conical tube 22 through stirring the shells sliding downwards along the first conical tube 21 by the first inclined rod 31, finally enabling the shells to uniformly fall down through stirring the shells sliding downwards along the second conical tube 22 again by the second inclined rod 32, blocking the lower end of the feeding tube 2, adjusting the falling speed of the shells through controlling the rotating speed of the first rotating shaft 3, and being simple to operate.

Specifically, the guide mechanism includes a support rod 61 and a plurality of spacers 6.

The supporting rods 61 are horizontally fixed in the mounting cavity 11, and the two ends of the supporting rods 61 are vertically mounted on the front and rear side walls of the cavity 11.

The baffle 6 of a plurality of is parallel and the interval evenly sets firmly on bracing piece 61, the length direction of baffle 6 and conveyer belt 5 is parallel, form clearance 66 between baffle 6 and the conveyer belt 5, form guide way 62 between two adjacent baffles 6, be equipped with stirring structure and limit structure in the guide way 62, the conveyer belt 5 is at the in-process of removing, stirring structure can stir the shell on the conveyer belt 5, limit structure can make the shell in the guide way 62 remove to the right-hand member of conveyer belt 5 one by one in proper order.

The shell slides down to conveyer belt 5 along filter screen 4, is separated into a plurality of rows by baffle 6, avoids the shell to pile up together and remove to conveyer belt 5 right-hand member, influences the screening of next step, and stirring structure can stir the shell on the conveyer belt 5, separates the shell that stacks together, under limit structure's effect, makes the shell in the guide channel 62 remove to conveyer belt 5's right-hand member one by one in proper order, improves the effect of screening.

Specifically, the stirring structure includes a second rotating shaft 63.

The second rotating shaft 63 is horizontally and rotatably disposed between two adjacent partition boards 6, and the second rotating shaft 63 is circumferentially provided with a plurality of stirring rods 631.

The shell moves rightwards under the action of the conveyor belt 5, and when the shell contacts with the stirring rod 631 on the second rotating shaft 63, the stirring rod 631 is driven to rotate, so that the stacked shells are separated, the screening effect of the shells is improved, and the blocking of the shell by the guide channel 62 can be avoided.

Specifically, the limiting structure includes a third rotating shaft 641, a guide plate 64, and a limiting plate 65.

The third rotating shaft 641 is horizontally and rotatably arranged between two adjacent partition boards 6, and two ends of the third rotating shaft 641 are perpendicular to the two adjacent partition boards 6.

The guide plate 64 is fixedly arranged on the third rotating shaft 641, and the distance from the left side edge of the guide plate 64 to the conveyor belt 5 is greater than the distance from the right side edge to the conveyor belt 5.

The limiting plates 65 are horizontally and fixedly arranged between two adjacent partition plates 6, the limiting plates 65 are located above the right side edges of the guide plates 64, reset springs 651 are fixedly arranged on the lower side faces of the limiting plates 65, and the lower ends of the reset springs 651 are fixedly connected with the right sides of the guide plates 64.

Because the limiting plate 65 is in a tilting state with high left and low right, and the height of the right side of the limiting plate 65 can only enable shells to pass through the limiting plate 65 one by one, the structure is simple; in addition, when the shell is great, the right side contact of shell and limiting plate 65 produces the extrusion, promote the right side of limiting plate 65 to rotate upwards, reset spring 651 is compressed, increase limiting plate 65 right side to conveyer belt 5's distance, make the shell pass through smoothly, avoid the shell to take place the breakage by the extrusion of limiting plate 65, improve the integrality of shell, after the shell passes through, under reset spring 651's effect, the right side of limiting plate 65 moves back initial position downwards, avoid less shell to pile up and pass limiting plate 65 together, influence the screening effect.

Specifically, the weight screening mechanism includes a plurality of screening structures, a plurality of screening structures and a plurality of guide channels 62 one-to-one, the screening structures are located on the right sides of the corresponding guide channels 62, and the screening structures include a first sliding plate 81, a second sliding plate 91 and a rotating structure.

The first sliding plate 81 is obliquely arranged in the installation cavity 11 through the first fixing rod 8, the distance from the left side edge of the first sliding plate 81 to the bottom of the installation cavity 11 is smaller than the distance from the right side edge to the bottom of the installation cavity 11, and the first sliding plate 81 is located below the right end of the conveyor belt 5.

The second sliding plate 91 is obliquely arranged in the installation cavity 11, the distance from the left side edge of the second sliding plate 91 to the bottom of the installation cavity 11 is larger than the distance from the right side edge to the bottom of the installation cavity 11, and the second sliding plate 91 is positioned on the right side of the first sliding plate 81.

The rotating structure is arranged between the first sliding plate 81 and the second sliding plate 91, when the weight of the shell falling from the right end of the conveyor belt 5 is small, the shell can be conveyed onto the second sliding plate 91 by the rotating structure, and when the weight of the shell falling from the right end of the conveyor belt 5 is large, the shell can be conveyed onto the first sliding plate 81 by the rotating structure.

When the weight of conveyer belt 5 right-hand member whereabouts shell is great, the rotating-structure carries the great shell of weight to first slide 81 on, and this shell slides down along first slide 81, and when the weight of conveyer belt 5 right-hand member whereabouts shell is less, rotating-structure carries the less shell of weight to second slide 91 on, and this shell slides down along second slide 91, accomplishes screening work, easy operation.

Specifically, the rotating structure includes two support plates 73, a rotating plate 71, and a counterweight structure.

Two of the support plates 73 are disposed in parallel at the bottom of the mounting chamber 11.

A fourth rotating shaft 7 is rotatably arranged between the two supporting plates 73, the axial direction of the fourth rotating shaft 7 is perpendicular to the front and rear side walls of the installation cavity 11, and the rotating plate 71 is rotatably arranged between the two supporting plates 73 through the fourth rotating shaft 7.

The weight structure is arranged on the lower side surface of the rotating plate 71, the weight structure is positioned on the right side of the fourth rotating shaft 7, when the shell weight falling from the right end of the conveyor belt 5 is small, the weight structure enables the rotating plate 71 to be in a tilting state with high left and low right, the right side of the rotating plate 71 is flush with the left side of the second sliding plate 91 in a butt joint mode, and when the shell weight falling from the right end of the conveyor belt 5 is large, the weight structure enables the rotating plate 71 to be in a tilting state with low left and high right, and the left side of the rotating plate 71 is flush with the right side of the first sliding plate 81 in a butt joint mode.

In the initial state, under the action of the counterweight structure, the rotating plate 71 is kept in a tilting state with high left and low right, the right side of the rotating plate 71 is flush with the left side of the second sliding plate 91, when shells with smaller weight fall onto the rotating plate 71, the rotating plate 71 does not rotate, shells with smaller weight slide down onto the second sliding plate 91 along the rotating plate 71, when shells with larger weight fall onto the rotating plate 71, the rotating plate 71 rotates anticlockwise around the fourth rotating shaft 7, the left side of the rotating plate 71 is flush with the right side of the first sliding plate 81, and shells with larger weight slide down onto the first sliding plate 81 along the rotating plate 71, so that the structure is simple.

Specifically, the weight structure includes a screw 72 and a weight 721.

The screw 72 is arranged on the lower side of the rotating plate 71 in parallel through two fixing plates 722, the screw 72 is positioned on the right side of the fourth rotating shaft 7, and the length direction of the screw 72 is parallel to the cross section of the fourth rotating shaft 7.

The weight 721 is screwed to the screw 72.

The balancing weight 721 is rotated, the balancing weight 721 is moved to one end of the screw 72 far away from the fourth rotating shaft 7, the rotating plate 71 is kept in a tilting state with high left and low right, when shells with small weight fall onto the rotating plate 71, the rotating plate 71 does not rotate due to the effect of the balancing weight 721, shells with small weight slide down along the second sliding plate 91, when shells with large weight fall onto the rotating plate 71, the rotating plate 71 rotates anticlockwise around the fourth rotating shaft 7, shells with large weight slide down along the first sliding plate 81, and shells with different weights can be screened out by adjusting the position of the balancing weight 721, so that the method is simple and efficient.

Specifically, the left and right sides of the rotating plate 71 are provided with lower notches 711, the right side of the first sliding plate 81 is provided with an upper notch 811, the left side of the second sliding plate 91 is provided with an upper notch 911, when the rotating plate 71 rotates to be in butt joint with the second sliding plate 91, the lower notch 711 on the right side of the rotating plate 71 is attached to the upper notch 811 on the left side of the second sliding plate 91, and when the rotating plate 71 rotates to be in butt joint with the first sliding plate 81, the lower notch 711 on the left side of the rotating plate 71 is attached to the upper notch 811 on the right side of the first sliding plate 81.

In the initial state, under the action of the balancing weight 721, the rotating plate 71 is rotated clockwise to a tilting state with high left and low right, meanwhile, the lower notch 711 on the right side of the rotating plate 71 is attached to the upper notch 811 on the left side of the second sliding plate 91, the rotating plate 71 is restricted from rotating clockwise, so that shells are ensured to slide to the second sliding plate 91 smoothly, when shells with large weight fall onto the left side of the rotating plate 71, the rotating plate 71 rotates anticlockwise around the fourth rotating shaft 7 to a tilting state with high left and low right, meanwhile, the lower notch 711 on the left side of the rotating plate 71 is attached to the upper notch 811 on the right side of the first sliding plate 81, the rotating plate 71 is restricted from rotating anticlockwise, the shells are ensured to slide to the first sliding plate 81 smoothly, and screening accuracy is improved.

Specifically, the bottom of the installation cavity 11 is provided with a waste frame 44, a first receiving frame 82 and a second receiving frame 92, the waste frame 44 is located right below the filter screen 4, the first receiving frame 82 is located below the left side edge of the first sliding plate 81, and the second receiving frame 92 is located below the right side edge of the second sliding plate 91.

The vibration motor 43 drives the filter screen 4 to vibrate, broken shells on the filter screen 4 fall into the waste material frame 44 and can be used for manufacturing shell powder, the shells with larger weight slide down into the first receiving frame 82 through the first sliding plate 81, the shells with smaller weight slide down into the second receiving frame 92 through the second sliding plate 91, screening is automatically completed, the trouble of manual selection is avoided, and time and labor are saved.

In the description of this patent, it should be understood that the directions or positional relationships indicated by the terms "upper", "lower", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience of description of the patent and to simplify the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the patent.

The specific embodiments described herein are offered by way of example only to illustrate the spirit of the invention. Those skilled in the art may make various modifications or additions to the described embodiments or substitutions thereof without departing from the spirit of the invention or exceeding the scope of the invention as defined in the accompanying claims.

Claims (4)

1. Shell sieving mechanism, characterized in that includes: the device comprises a device body (1), wherein a mounting cavity (11) is arranged in the device body (1);

The feeding pipe (2) is arranged at the top of the device body (1), the lower end of the feeding pipe (2) is communicated with the mounting cavity (11), and the feeding pipe (2) is a conical pipe with a large upper part and a small lower part;

The filter screen (4), the filter screen (4) is articulated in the installation cavity (11) through the articulated shaft (41), the filter screen (4) is located below the feeding pipe (2), the filter screen (4) is in a tilting state with high left and low right, a vibration motor (43) is fixedly arranged in the installation cavity (11), and the vibration motor (43) is fixedly connected with the lower side face of the filter screen (4);

The conveying mechanism is arranged in the feeding pipe (2) and can enable shells in the feeding pipe (2) to uniformly fall onto the filter screen (4);

The conveying belt (5) is horizontally arranged in the installation cavity (11), and the left end of the conveying belt (5) is positioned below the right side edge of the filter screen (4);

The guide mechanism is arranged above the conveyor belt (5), and can divide shells on the conveyor belt (5) into a plurality of rows, and the shells in each row sequentially move to the right end of the conveyor belt (5) one by one;

The weight screening mechanism is arranged on the right side of the conveyor belt (5), and can classify shells moving to the right end of the conveyor belt (5) according to the weight;

the guide mechanism includes:

The support rods (61) are horizontally and fixedly arranged in the mounting cavities (11), and the front side wall and the rear side wall of the mounting cavities (11) are vertically arranged at the two ends of the support rods (61);

The device comprises a plurality of clapboards (6), wherein the clapboards (6) are parallel and uniformly fixed on a supporting rod (61) at intervals, the clapboards (6) are parallel to the length direction of a conveyor belt (5), a gap (66) is formed between each clapboards (6) and the conveyor belt (5), a guide channel (62) is formed between two adjacent clapboards (6), a stirring structure and a limiting structure are arranged in each guide channel (62), the conveyor belt (5) is in the moving process, the stirring structure can stir shells on the conveyor belt (5), and the limiting structure can enable the shells in the guide channels (62) to sequentially move to the right end of the conveyor belt (5) one by one;

The limit structure comprises:

a third rotating shaft (641), wherein the third rotating shaft (641) is horizontally and rotatably arranged between two adjacent partition plates (6);

the guide plate (64) is fixedly arranged on the third rotating shaft (641), and the distance from the left side edge of the guide plate (64) to the conveyor belt (5) is larger than the distance from the right side edge to the conveyor belt (5);

The limiting plates (65) are horizontally and fixedly arranged between two adjacent partition plates (6), the limiting plates (65) are positioned above the right side edges of the guide plates (64), reset springs (651) are fixedly arranged on the lower side surfaces of the limiting plates (65), and the lower ends of the reset springs (651) are fixedly connected with the right sides of the guide plates (64);

the weight screening mechanism includes a plurality of screening structure, a plurality of screening structure and a plurality of direction passageway (62) one-to-one, the screening structure is located the right side of corresponding direction passageway (62), the screening structure includes:

The first sliding plate (81) is obliquely arranged in the installation cavity (11), the distance from the left side edge of the first sliding plate (81) to the bottom of the installation cavity (11) is smaller than the distance from the right side edge to the bottom of the installation cavity (11), and the first sliding plate (81) is positioned below the right end of the conveyor belt (5);

The second sliding plate (91) is obliquely arranged in the installation cavity (11), the distance from the left side edge of the second sliding plate (91) to the bottom of the installation cavity (11) is larger than the distance from the right side edge to the bottom of the installation cavity (11), and the second sliding plate (91) is positioned on the right side of the first sliding plate (81);

A rotating structure arranged between the first slide plate (81) and the second slide plate (91), wherein the rotating structure can convey the shell to the second slide plate (91) when the weight of the shell falling on the right end of the conveyor belt (5) is small, and can convey the shell to the first slide plate (81) when the weight of the shell falling on the right end of the conveyor belt (5) is large;

The rotating structure comprises:

the two support plates (73), the two support plates (73) are arranged at the bottom of the installation cavity (11) in parallel;

the rotating plate (71) is rotatably arranged between the two supporting plates (73) through a fourth rotating shaft (7), and the axial direction of the fourth rotating shaft (7) is perpendicular to the front side wall and the rear side wall of the mounting cavity (11);

The counterweight structure is arranged on the lower side surface of the rotating plate (71), is positioned on the right side of the fourth rotating shaft (7), enables the rotating plate (71) to be in a tilting state with high left and low right when the weight of shells falling from the right end of the conveyor belt (5) is small, and enables the right side of the rotating plate (71) to be in butt joint flush with the left side of the second sliding plate (91), and enables the rotating plate (71) to be in a tilting state with low left and high right when the weight of shells falling from the right end of the conveyor belt (5) is large, and enables the left side of the rotating plate (71) to be in butt joint flush with the right side of the first sliding plate (81);

the counterweight structure includes:

the screw (72) is arranged on the lower side surface of the rotating plate (71) in parallel through two fixing plates (722), the screw (72) is positioned on the right side of the fourth rotating shaft (7), and the length direction of the screw (72) is parallel to the cross section of the fourth rotating shaft (7);

a weight (721), the weight (721) being screwed on the screw (72);

The left and right sides of rotor plate (71) all are equipped with down breach (711), the right side of first slide (81) is equipped with first breach (811), the left side of second slide (91) is equipped with breach (911) on the second, when rotor plate (71) rotate to with second slide (91) butt joint parallel and level, the breach (711) on rotor plate (71) right side and the breach (911) on the second slide (91) left side laminate mutually, when rotor plate (71) rotate to with first slide (81) butt joint parallel and level, the breach (711) on rotor plate (71) left side and the first breach (811) on first slide (81) right side laminate mutually.

2. The shell screening device of claim 1, wherein the conveying mechanism comprises:

The device comprises a first conical pipe (21) and a second conical pipe (22), wherein the upper end of the first conical pipe (21) is fixedly connected with the inner side wall of the feeding pipe (2), and the upper end of the second conical pipe (22) is fixedly connected with the inner side wall of the feeding pipe (2);

the first rotating shaft (3) is coaxially arranged in the feeding pipe (2) in a rotating mode, a plurality of first inclined rods (31) are fixedly arranged on the first rotating shaft (3) along the circumferential direction, the first inclined rods (31) are located between the first conical pipe (21) and the second conical pipe (22), a plurality of second inclined rods (32) are fixedly arranged on the first rotating shaft (3) along the circumferential direction, and the second inclined rods (32) are located below the second conical pipe (22);

The motor (33) is fixedly arranged at the top of the device body (1) through a bracket, and the motor (33) is in transmission connection with the first rotating shaft (3).

3. The shell screening device according to claim 2, wherein the stirring structure comprises:

The second rotating shaft (63), the second rotating shaft (63) horizontally rotates and is arranged between two adjacent partition plates (6), and a plurality of stirring rods (631) are arranged on the second rotating shaft (63) along the circumferential direction.

4. A shell screening device according to claim 3, wherein the bottom of the mounting cavity (11) is provided with a waste frame (44), a first receiving frame (82) and a second receiving frame (92), the waste frame (44) is located right below the filter screen (4), the first receiving frame (82) is located below the left side edge of the first sliding plate (81), and the second receiving frame (92) is located below the right side edge of the second sliding plate (91).