Separating device for first walnut path and second walnut path

Abstract

The utility model provides a walnut first-path and second-path separating device which is characterized in that a feeding device is arranged above the top end of an inclined sliding chute, a separating device is arranged at the tail end of the sliding chute, the separating device comprises an image recognition mechanism and a snifting valve, a nozzle and a rotating mechanism are arranged at the front end of the snifting valve, and the image recognition mechanism and the snifting valve are respectively and electrically connected with a control system. The image recognition mechanism photographs the walnuts sliding out of the sliding groove, and after the control system recognizes and analyzes the walnuts, the snifting valve is controlled to rotate to blow the walnuts into the collecting device. The problems of missing separation and mistaken separation in the separation process caused by orientation deviation of an air injection valve and walnut kernels in a separation device are solved.

Description

Technical Field

[0001] The utility model relates to the field of walnut processing equipment, in particular to a first-path and second-path separation device for walnuts. Background Art

[0002] "First-class" and "second-class" are terms used in agricultural product grading to denote batches separated by size or quality. In walnut processing, "first-class" typically refers to larger or higher-quality walnuts, while "second-class" refers to the lower-quality batch. To achieve efficient walnut separation, specialized separation equipment can be used to grade walnuts based on size, weight, or appearance.

[0003] The first-pass and second-pass walnut separation device generally includes a feeding system, a visual inspection system, a diversion device and a control system. The walnuts are evenly transported to the separation device. The visual inspection system takes photos of the appearance of the walnuts for inspection. The diversion device guides the walnuts that have been screened and inspected to different collection areas to ensure that the first-pass and second-pass walnuts are collected separately. The control system is used to monitor the entire separation process and adjust the parameters as needed. This separation device has a high degree of automation and is suitable for large-scale production. The diversion process usually uses an air jet valve for diversion. However, the falling path of the walnut cannot be completely guaranteed to pass directly in front of the air jet nozzle, and the shape of the walnut kernel is relatively rugged. Its optimal force-bearing surface may not be completely perpendicular to the air jet direction, resulting in an error in the walnut kernel separation path, causing problems such as omission and misclassification during the separation process. Utility Model Content

[0004] The main purpose of the utility model is to provide a walnut head-way and two-way separation device to solve the problems of missed separation and mis-separation in the separation process caused by the deviation of the direction of the air injection valve and the walnut kernel in the separation device.

[0005] In order to solve the above technical problems, the technical solution adopted by the utility model is: a walnut head-way and two-way separation device, a feeding device is provided above the top of the inclined chute, and a separation device is provided at the tail end of the chute, the separation device includes an image recognition mechanism and an air jet valve, a nozzle and a rotation mechanism are provided at the front end of the air jet valve, the image recognition mechanism and the air jet valve are electrically connected to the control system respectively, the image recognition mechanism takes pictures of the walnuts sliding out of the chute, and after identification and analysis, the control system controls the air jet valve to rotate, blowing the walnuts into the collection device respectively.

[0006] In the preferred embodiment, the nozzle includes a pipe joint, a ball joint and a gland. The lower end of the ball joint is rotatably mounted on the top of the pipe joint. The inner wall of the lower end of the gland is threadedly connected to the outer wall of the upper end of the pipe joint. The stepped surface of the top end of the gland rests above the maximum diameter of the outer surface of the ball joint. The upper end of the ball joint extends a certain distance from the top end of the gland. The lower end of the pipe joint is connected to the valve body of the jet valve. The inner wall of the upper end of the ball joint is provided with a thread for connecting to the jet port.

[0007] In a preferred embodiment, the inner diameter of the top of the pipe joint is smaller than the maximum outer diameter of the ball joint, and the inner diameter of the stepped surface at the top of the gland is smaller than the maximum outer diameter of the ball joint, so that the ball joint can rotate between the pipe joint and the gland;

[0008] The pipe joint, the ball joint and the middle of the gland are all provided with vent holes for the gas from the jet valve body to be ejected.

[0009] In the preferred embodiment, the rotating mechanism includes two groups of rigid ropes, friction wheels and servo motors. The rigid ropes form a loop around the ball joint inside the pressure cover. The rigid ropes on both sides extend out of the top of the pressure cover and are respectively connected to the two sides of the upper end of the ball joint. The friction wheel rests on one side of the rigid rope. The servo motor passes through the outer wall of the pressure cover and is connected to the friction wheel, driving the friction wheel to rotate, driving the rigid rope to pull the ball joint to rotate to both sides.

[0010] In the preferred embodiment, the second group of rigid rope ring parts are staggered with the first group, and the rigid ropes, friction wheels, and servo motors on both sides are vertically staggered with the first group. The two groups of rigid ropes are respectively connected to four equally divided points around the top of the ball joint, driving the ball joint to rotate within a certain angle.

[0011] In a preferred embodiment, a chamfered angle is provided at the inner diameter of the top of the gland, and the rigid ropes on both sides extend out of the top of the gland from the lower end of the chamfered angle.

[0012] In the preferred embodiment, the friction wheel consists of a driving wheel and a driven wheel, one side of the driving wheel is rotatably connected to the pressure cover, and the other side is connected to the servo motor, the driven wheel is rotatably connected to the pressure cover, and the line connecting the axes of the driving wheel and the driven wheel is perpendicular to the clamped rigid rope.

[0013] In the preferred embodiment, a concave ring is provided in the middle of the driven wheel, a convex ring is provided in the middle of the driving wheel, the rigid rope is arranged in the concave ring of the driven wheel, the convex ring of the driving wheel rests on the rigid rope, and the gap between the surface of the convex ring of the driving wheel and the surface of the concave ring of the driven wheel is smaller than the diameter of the rigid rope.

[0014] In the preferred embodiment, a hexagonal flange is provided on the middle portion of the pipe joint and the outer ring of the lower end of the gland.

[0015] In the preferred embodiment, the image recognition mechanism includes two opposing CCD sensors, whose sensing direction line is perpendicular to the inclined surface of the slide groove. Two light sources are provided on both sides of each CCD sensor. The light source above the CCD sensor is opposite to the light source below the opposite CCD sensor. The intersection of the relative lines of the two groups of light sources is located on the extension line of the inclined surface of the slide groove.

[0016] The utility model provides a first-path and second-path separation device for walnuts. Walnuts enter the chute evenly from the feeding device, slide naturally down the chute and enter the separation device. After the image recognition mechanism takes photos to determine the shape, size and falling posture of the walnut kernels, the second-path walnuts are blown out through the jet valve and fall into the second-path collection device, and the first-path walnuts naturally fall into the first-path collection device. The control system controls the rotating mechanism to drive the front-end nozzle of the jet valve to rotate according to the falling posture of the walnut kernels, so that the nozzle faces the best force-bearing surface of the walnut kernels, thereby solving the problem of missed separation and wrong separation in the separation process caused by the deviation of the direction of the jet valve and the walnut kernels in the separation device. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The present invention will be further described below with reference to the accompanying drawings and embodiments:

[0018] Figure 1 This is a schematic diagram of the overall appearance of the utility model;

[0019] Figure 2 This is the main structural diagram of the nozzle of the utility model;

[0020] Figure 3 This is an axonometric structural diagram of the nozzle and rotating mechanism of the utility model;

[0021] Figure 4 This is a cross-sectional structural diagram of the nozzle and rotating mechanism of the utility model;

[0022] Figure 5 This is a side view of the structure of the nozzle and rotating mechanism of the utility model in the explosion mode;

[0023] Figure 6 This is a side structural diagram of the rotating mechanism of the utility model in the explosion mode;

[0024] Figure 7 This is an axonometric structural diagram of the connection part between the friction wheel and the rigid rope of the utility model.

[0025] In the figure: a delivery device 1; a chute 2; an image recognition mechanism 3; a CCD sensor 301; a light source 302; an air jet valve 4; a nozzle 5; a pipe joint 501; a ball joint 502; a pressure cover 503; a rotating mechanism 6; a rigid rope 601; a friction wheel 602; a servo motor 603; a driving wheel 604; a driven wheel 605; a control system 7; and a collecting device 8. DETAILED DESCRIPTION

[0026] Example 1

[0027] like Figures 1 to 7As shown, a walnut first-way and second-way separation device is provided, a feeding device 1 is provided above the top of the inclined chute 2, and a separation device is provided at the tail end of the chute 2, the separation device includes an image recognition mechanism 3 and an air jet valve 4, a nozzle 5 and a rotating mechanism 6 are provided at the front end of the air jet valve 4, the image recognition mechanism 3 and the air jet valve 4 are electrically connected to the control system 7 respectively, the image recognition mechanism 3 takes pictures of the walnuts sliding out of the chute 2, and after identification and analysis, the control system 7 controls the air jet valve 4 to rotate, and blows the walnuts into the collecting device 8 respectively.

[0028] In the present application, walnuts are put into the system from the feeding device 1, and the distribution mechanism in the feeding device 1 allows the walnut kernels to enter the chute 2 evenly, and slide naturally down along the chute 2 into the separation device. The image recognition mechanism 3 takes pictures to determine the shape and size of the walnut kernels to distinguish the first-path and second-path grades of the walnut kernels with diversion, and the second-path walnut kernels are blown out through the lower jet valve 4 and fall into the second-path collection device. The first-path walnut kernels naturally fall into the first-path collection device. The control system analyzes the falling posture of the walnut kernels based on the pictures taken by the image recognition mechanism 3, and controls the rotating mechanism 6 to drive the front end nozzle 5 of the jet valve 4 to rotate so that it faces the best force-bearing surface of the walnut kernel.

[0029] In the preferred embodiment, the nozzle 5 includes a pipe joint 501, a ball joint 502 and a gland 503. The lower end of the ball joint 502 is rotatably mounted on the top of the pipe joint 501. The inner wall of the lower end of the gland 503 is threadedly connected to the outer wall of the upper end of the pipe joint 501. The stepped surface of the top end of the gland 503 rests above the maximum diameter of the outer surface of the ball joint 502. The upper end of the ball joint 502 extends a certain distance from the top of the gland 503. The lower end of the pipe joint 501 is connected to the valve body of the jet valve 4. The inner wall of the upper end of the ball joint 502 is provided with a thread for connecting to the jet port.

[0030] Specifically, jet ports of different shapes and lengths can be installed and replaced at the upper end of the ball joint 502 as needed to achieve a more precise separation effect. Without installing additional jet ports, the compressed gas in the jet valve can also be directly ejected from the upper end of the ball joint 502, making the nozzle 5 more applicable.

[0031] In the preferred embodiment, the inner diameter of the top of the pipe joint 501 is smaller than the maximum outer diameter of the ball joint 502, and the inner diameter of the stepped surface at the top of the gland 503 is smaller than the maximum outer diameter of the ball joint 502, so that the ball joint 502 can rotate between the pipe joint 501 and the gland 503;

[0032] The pipe joint 501, the ball joint 502 and the gland 503 are all provided with vent holes in the middle thereof for the gas from the valve body of the jet valve 4 to be ejected.

[0033] Specifically, the ball joint 502 is arranged between the pipe joint 501 and the pressure cover 503. Because its maximum outer diameter is larger than the abutment points at the upper and lower ends, it limits the horizontal and vertical movement of the ball joint but does not limit its free rotation. After the gas is compressed in the valve body of the injection valve 4, it passes through the pipe joint 501, the ball joint 502 and the air vent in the middle of the pressure cover 503, and is ejected at the end of the path after the ball joint 502 rotates.

[0034] In the preferred embodiment, the rotating mechanism 6 includes two groups of rigid ropes 601, friction wheels 602 and servo motors 603. The rigid ropes 601 form a loop around the ball joint 502 inside the pressure cover 503. The rigid ropes 601 on both sides extend out of the top of the pressure cover 503 and are respectively connected to the two sides of the upper end of the ball joint 502. The friction wheel 602 rests on one side of the rigid rope 601. The servo motor 603 passes through the outer wall of the pressure cover 503 and is connected to the friction wheel 602, driving the friction wheel 602 to rotate, thereby driving the rigid rope 601 to pull the ball joint 502 to rotate to both sides.

[0035] In the preferred embodiment, the annular portion of the second group of rigid ropes 601 is staggered with the first group, and the rigid ropes 601, friction wheels 602, and servo motors 603 on both sides are vertically staggered with the first group. The two groups of rigid ropes 601 are respectively connected to four equally divided points around the top of the ball joint 502, driving the ball joint 502 to rotate within a certain angle.

[0036] After receiving the desired angular information from the control system 7, the rotation mechanism 6 transmits the corresponding rotation data to the servo motor 603. When the ball joint 502 is required to tilt toward one side of the friction wheel 602, the servo motor 603 drives the friction wheel 602 to rotate, pulling the rigid rope 601 downward, and the ball joint 502 rotates toward that side. When the ball joint 502 is required to tilt toward the opposite side of the friction wheel 602, the servo motor 603 drives the friction wheel 602 to rotate, pulling the rigid rope 601 upward. The rigid rope 601 loop inside the gland 503 moves toward the friction wheel, thereby driving the opposite rigid rope 601 downward and rotating the ball joint 502 toward that side. The two sets of rigid rope pulling mechanisms work together to enable the ball joint 502 to rotate precisely within a conical spatial region facing its upper outlet, thereby achieving different diversion directions of gas.

[0037] In the preferred embodiment, the top inner diameter of the gland 503 is beveled, and the rigid cords 601 on both sides extend from the bottom of the bevel. The height difference between the top and bottom ends of the bevel creates a certain distance between the top of the ball joint 502 and the point where the rigid cords 601 extend, providing space for the rigid cords 601 to pull down, thereby achieving a wider range of rotation angles.

[0038] In the preferred embodiment, the friction wheel 602 is composed of a driving wheel 604 and a driven wheel 605. One side of the driving wheel 604 is rotatably connected to the pressure cover 503, and the other side is connected to the servo motor 603. The driven wheel 605 is rotatably connected to the pressure cover 503. The axis connecting the driving wheel 604 and the driven wheel 605 is perpendicular to the clamped rigid rope 601.

[0039] In the preferred embodiment, a concave ring is provided in the middle of the driven wheel 605, a convex ring is provided in the middle of the driving wheel 604, the rigid rope 601 is arranged in the concave ring of the driven wheel 605, the convex ring of the driving wheel 604 rests on the rigid rope 601, and the gap between the surface of the convex ring of the driving wheel 604 and the surface of the concave ring of the driven wheel 605 is smaller than the diameter of the rigid rope 601.

[0040] The rigid rope 601 is vertically squeezed and rubbed by two friction wheels, so that the rotation distance output by the servo motor 603 is transmitted to the vertical movement distance of the rigid rope 601, so as to achieve precise control of the rotation angle of the ball joint 502 and reduce the orientation deviation between the jet valve and the walnut kernel.

[0041] In the preferred embodiment, hexagonal flanges are provided on the central portion of the pipe joint 501 and the outer ring of the lower end of the gland 503. Because the ball joint 502 rotates frequently during the separation process, the pipe joint 501 and gland 503 in contact with it are susceptible to wear. The provision of hexagonal flanges facilitates the removal and replacement of worn parts, improving the sustainable operation of the separation device and maintaining the rotational accuracy of the nozzle 5.

[0042] In the preferred embodiment, the image recognition mechanism 3 includes two opposite CCD sensors 301, whose sensing direction line is perpendicular to the inclined surface of the slide 2. Two light sources 302 are provided on both sides of each CCD sensor 301. The light source 302 above the CCD sensor 301 is opposite to the light source 302 below the opposite CCD sensor 301. The intersection of the relative connection line of the two groups of light sources 302 is located on the extension line of the inclined surface of the slide 2.

[0043] The intersection of the lighting makes the falling walnut kernel have no blind spots, and the two opposing CCD sensors 301 take pictures together to obtain more accurate images of the walnut kernel's shape, size, and falling posture, which is convenient for the control system 7 to distinguish.

[0044] The above embodiments are merely preferred technical solutions of the present invention and should not be construed as limiting the present invention. The scope of protection of the present invention shall be the technical solutions set forth in the claims, including equivalent alternatives to the technical features of the technical solutions set forth in the claims. Equivalent alternatives and improvements within this scope are also within the scope of protection of the present invention.

Claims

1. A walnut head road two-way separation device, characterized by: A delivery device (1) is provided above the top of the inclined chute (2), and a separation device is provided at the tail end of the chute (2). The separation device comprises an image recognition mechanism (3) and an air jet valve (4). A nozzle (5) and a rotation mechanism (6) are provided at the front end of the air jet valve (4). The image recognition mechanism (3) and the air jet valve (4) are electrically connected to a control system (7) respectively. The image recognition mechanism (3) takes a photo of the walnuts sliding out of the chute (2). After the control system (7) recognizes and analyzes the walnuts, it controls the air jet valve (4) to rotate, and blows the walnuts into a collecting device (8).

2. The walnut head and two-way separation device according to claim 1 is characterized in that: The nozzle (5) comprises a pipe joint (501), a ball joint (502) and a gland (503). The lower end of the ball joint (502) is rotatably sleeved on the top end of the pipe joint (501). The inner wall of the lower end of the gland (503) is threadedly connected to the outer wall of the upper end of the pipe joint (501). The top stepped surface of the gland (503) abuts above the maximum diameter of the outer surface of the ball joint (502). The upper end of the ball joint (502) extends a distance from the top end of the gland (503). The lower end of the pipe joint (501) is connected to the valve body of the jet valve (4). The inner wall of the upper end of the ball joint (502) is provided with a thread for connecting to the jet port.

3. The walnut head and two-way separation device according to claim 2 is characterized in that: The inner diameter of the top end of the pipe joint (501) is smaller than the maximum outer diameter of the ball joint (502), and the inner diameter of the stepped surface at the top end of the gland (503) is smaller than the maximum outer diameter of the ball joint (502), so that the ball joint (502) can rotate between the pipe joint (501) and the gland (503); The pipe joint (501), the ball joint (502) and the gland (503) are all provided with vent holes in the middle thereof for the gas from the valve body of the jet valve (4) to be ejected.

4. The walnut head and two-way separation device according to claim 1 is characterized in that: The rotating mechanism (6) comprises two groups of rigid ropes (601), a friction wheel (602) and a servo motor (603). The rigid ropes (601) are looped around the ball joint (502) inside the gland (503). The rigid ropes (601) on both sides extend out of the top of the gland (503) and are respectively connected to both sides of the upper end of the ball joint (502). The friction wheel (602) abuts against one side of the rigid rope (601). The servo motor (603) passes through the outer wall of the gland (503) and is connected to the friction wheel (602), driving the friction wheel (602) to rotate, thereby driving the rigid ropes (601) to pull the ball joint (502) to rotate in both directions.

5. The walnut head and two-way separation device according to claim 4 is characterized in that: The annular portion of the second set of rigid ropes (601) is staggered with the first set, and the rigid ropes (601), friction wheels (602), and servo motors (603) on both sides are vertically staggered with the first set. The two sets of rigid ropes (601) are respectively connected to four equally divided points around the top of the ball joint (502), driving the ball joint (502) to rotate within a certain angle.

6. The walnut head and two-way separation device according to claim 4 is characterized by: A chamfered angle is provided at the inner diameter of the top of the gland (503), and rigid ropes (601) on both sides extend from the bottom end of the chamfered angle to the top of the gland (503).

7. The walnut head and two-way separation device according to claim 4 is characterized by: The friction wheel (602) is composed of a driving wheel (604) and a driven wheel (605). One side of the driving wheel (604) is rotatably connected to the pressure cover (503), and the other side is connected to the servo motor (603). The driven wheel (605) is rotatably connected to the pressure cover (503). The axis connecting the driving wheel (604) and the driven wheel (605) is perpendicular to the clamped rigid rope (601).

8. The walnut head and two-way separation device according to claim 7, characterized in that: A concave ring is provided in the middle of the driven wheel (605), a convex ring is provided in the middle of the driving wheel (604), a rigid rope (601) is arranged in the concave ring of the driven wheel (605), the convex ring of the driving wheel (604) abuts against the rigid rope (601), and a gap between a surface of the convex ring of the driving wheel (604) and a surface of the concave ring of the driven wheel (605) is smaller than a diameter of the rigid rope (601).

9. The walnut head and two-way separation device according to claim 2, characterized in that: The middle of the pipe joint (501) and the outer ring of the lower end of the gland (503) are both provided with hexagonal flanges.

10. The walnut head and two-way separation device according to claim 1, characterized in that: The image recognition mechanism (3) includes two opposing CCD sensors (301), the sensing direction line of which is perpendicular to the inclined surface of the chute (2), and two light sources (302) are provided on both sides of each CCD sensor (301). The light source (302) above the CCD sensor (301) is opposite to the light source (302) below the opposite CCD sensor (301), and the intersection of the relative connection line of the two groups of light sources (302) is located on the extension line of the inclined surface of the chute (2).

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