Screening device for fish feed processing and screening method thereof

Abstract

The invention discloses a screening device for fish feed processing and a screening method thereof, and belongs to the technical field of feed processing. The screening device for fish feed processing comprises a screening box, a screening disc is rotationally installed in the screening box, a rotating shaft is fixedly connected to the middle of the screening disc, a one-way bearing fixedly sleeves the outer side of the rotating shaft, a driving rod is fixedly connected to the outer side of the one-way bearing, a power mechanism is installed on the lower portion of the screening box, and a reverse driving mechanism is installed on the lower portion of the screening box. A cleaning mechanism is installed in the material screening box and arranged above the screening disc. By arranging the reverse driving mechanism, in the reciprocating rotation process of the driving rod, the sieve tray can be driven to rotate in the second direction with the rotating radian smaller than that of the first direction, so that when the sieve tray conducts reciprocating rotation to screen fish feed, the part, below the cleaning mechanism, of the sieve tray can be adjusted; and the device can clean the sieve tray in the process that the sieve tray performs screening operation, and the screening efficiency of the device is improved.

Description

Technical Field

[0001] The invention relates to the technical field of feed processing, and more specifically to a screening device for fish feed processing and a screening method thereof. Background Art

[0002] The processing of fish feed requires multiple steps including raw material preparation, batching, mixing, puffing, drying, cooling, screening and packaging. In each link, it is very important to ensure the quality of raw materials, precise control of processing technology, and the nutritional content and particle quality of the final product. Among them, the screening device can screen out unqualified particles in the fish feed (such as oversized or undersized particles, impurities, etc.), ensuring that the final product particles are uniform and of appropriate size to meet the different requirements of different fish species for particle size.

[0003] After searching, the patent document with the existing announcement number CN117960576B provides a screening device for animal feed processing. The device can use multiple groups of reciprocating screening plates by setting a rotary screening device to quickly screen out the broken materials that do not meet the requirements in the feed particles. The screening plates arranged with a spiral curved surface increase the screening area. At the same time, with the setting of the power device, the screening plates can realize rotational motion, further improving the screening efficiency and screening effect, and meeting the requirements of automated batch production of pellet feed.

[0004] However, when the screening plate of the above-mentioned device is blocked, it is necessary to simultaneously realize the reciprocating screening motion of the screening plate and the suspension of the feeding action of the corresponding material guide box in order to clean the screening plate, which will affect the screening efficiency of the device. In view of this, we propose a screening device for fish feed processing and a screening method thereof. Summary of the invention

[0005] 1. Technical issues to be solved

[0006] The object of the present invention is to provide a screening device and a screening method for fish material processing to solve the problems raised in the above-mentioned background technology.

[0007] 2. Technical solution

[0008] The present invention is achieved through the following technical solutions:

[0009] A screening device for fish material processing and a screening method thereof, comprising a screening box, a screening plate rotatably installed inside the screening box, a rotating shaft fixedly connected to the middle of the screening plate, a one-way bearing fixedly sleeved outside the rotating shaft, a driving rod fixedly connected to the outside of the one-way bearing, a power mechanism installed at the bottom of the screening box, the power mechanism is used to drive the driving rod to swing back and forth, the driving rod can drive the rotating shaft to rotate intermittently in a first direction through the one-way bearing, a reverse driving mechanism is installed at the bottom of the screening box, the reverse driving mechanism is used to drive the rotating shaft to rotate intermittently in a second direction, the first direction is opposite to the second direction, the angle of intermittent rotation of the rotating shaft in the first direction is greater than the angle of intermittent rotation in the second direction, and a cleaning mechanism is installed inside the screening box, the cleaning mechanism is arranged above the screening plate.

[0010] As an optional solution to the technical solution of the present application document, a baffle is fixedly installed inside the screening box, the baffle is located above the sieve plate, a feed port is opened at the top of the screening box, the feed port and the cleaning mechanism are respectively located on both sides of the baffle, and the cleaning mechanism is arranged in front of the feed port along the first direction.

[0011] As an optional solution to the technical solution of the present application document, the power mechanism includes a first drive motor, a limit rod and a rocker arm. The limit rod is rotatably connected to the drive rod. A limit slot is provided in the middle of the limit rod. The rocker arm is arranged in a Z shape. One end of the rocker arm is slidably inserted in the limit slot, and the other end is fixedly connected to the output end of the first drive motor.

[0012] As an optional solution to the technical solution of the present application document, the reverse drive mechanism includes a drive ring, a guide rail and a limit pin. The drive ring is fixedly sleeved on the outside of the rotating shaft. There are multiple limit pins, and the multiple limit pins are arranged in a ring shape with equal intervals. The limit pin is slidably inserted in the drive ring. The guide rail is located below the drive ring and is connected and fixed to the screening box for supporting the limit pin upward. A notch is provided on one side of the guide rail. The guide rail is divided into a horizontal part and an inclined part. One end of the horizontal part is connected and fixed to the inclined part, and the other end of the horizontal part is located below the rotation range of the drive rod.

[0013] As an optional solution of the technical solution of the present application document, a sliding groove is opened in the middle of the limit pin, and the limit pin is vertically limited and slidably connected with the driving ring through the sliding groove.

[0014] As an optional solution to the technical solution of the present application document, a boss is provided at the lower part of the limit pin, and an avoidance groove is opened on the side of the horizontal part close to the notch. The avoidance groove is arranged in an arc shape, and the width of the avoidance groove is smaller than the size of the boss and larger than the size of the limit pin.

[0015] As an optional solution of the technical solution of the present application document, the arc between two adjacent limit pins is smaller than the maximum rotation arc of the driving rod.

[0016] As an optional solution to the technical solution of the present application document, the cleaning mechanism includes a second drive motor and a cleaning roller, the second drive motor is connected and fixed to the screening box, the cleaning roller is connected and fixed to the output end of the second drive motor, bristles are fixed to the outside of the cleaning roller, the bristles are arranged in a spiral shape, and a first discharge port is provided on one side of the screening box, and the first discharge port is located below the cleaning roller.

[0017] As an optional solution to the technical solution of the present application document, a collecting chamber is provided inside the screening box, the collecting chamber is located below the sieve plate, a push plate is fixedly installed at the lower part of the sieve plate, a second discharge port is provided at the lower part of the screening box, and the second discharge port is connected to the collecting chamber.

[0018] 3. Beneficial effects

[0019] Compared with the prior art, the present invention has the following beneficial effects:

[0020] 1) The present application sets a reverse driving mechanism, which can drive the sieve plate to rotate in the second direction with a smaller rotation arc than the first direction during the reciprocating rotation of the driving rod, so that the sieve plate can adjust its position under the cleaning mechanism when reciprocatingly rotating to screen the fish material, so that the device can clean the sieve plate during the screening operation, thereby increasing the screening efficiency of the device.

[0021] 2) The present application arranges spiral bristles on the outer side of the cleaning roller so that the bristles can push the fish material on the upper part of the sieve plate into the first discharge port during the radial cleaning of the sieve plate.

[0022] 3) The present application provides a push plate under the sieve plate so that the push plate can rotate along with the sieve plate to push the fish material in the collection chamber into the second discharge port. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a schematic diagram of the overall structure of a screening device for fish material processing;

[0024] Figure 2 It is a schematic diagram of the internal structure of a screening device for fish material processing;

[0025] Figure 3 It is a schematic diagram of the installation position of a baffle plate of a screening device for fish material processing;

[0026] Figure 4 It is a schematic diagram of the structure of a sieve plate of a screening device for fish material processing;

[0027] Figure 5 It is a schematic diagram of the driving structure of a screening device for fish material processing;

[0028] Figure 6 It is a schematic diagram of the power mechanism of a screening device for fish material processing;

[0029] Figure 7 It is a schematic diagram of a reverse drive mechanism of a screening device for fish material processing;

[0030] In the figure: 1. screening box; 101. baffle; 102. feed port; 103. first discharge port; 104. collecting chamber; 105. second discharge port; 2. sieve plate; 201. push plate; 3. rotating shaft; 4. one-way bearing; 5. driving rod; 6. power mechanism; 601. first driving motor; 602. limiting rod; 603. rocker; 7. reverse driving mechanism; 701. driving ring; 702. guide rail; 7021. horizontal part; 7022. inclined part; 7023. avoidance groove; 703. limiting pin; 7031. slide groove; 7032. boss; 8. cleaning mechanism; 801. second driving motor; 802. cleaning roller; 803. bristles. DETAILED DESCRIPTION

[0031] The technical solution of the present invention will be clearly and completely described below in conjunction with the accompanying drawings.

[0032] Embodiment 1:

[0033] See also Figure 1 and Figure 2 The present invention provides a screening device for fish material processing, including a screening box 1, a screening plate 2 is rotatably installed inside the screening box 1, a rotating shaft 3 is fixedly connected to the middle of the screening plate 2, a one-way bearing 4 is fixedly sleeved on the outer side of the rotating shaft 3, a driving rod 5 is fixedly connected to the outer side of the one-way bearing 4, a power mechanism 6 is installed at the lower part of the screening box 1, the power mechanism 6 is used to drive the driving rod 5 to swing back and forth, the driving rod 5 can drive the rotating shaft 3 to rotate intermittently along a first direction through the one-way bearing 4, a reverse driving mechanism 7 is installed at the lower part of the screening box 1, the reverse driving mechanism 7 is used to drive the rotating shaft 3 to rotate intermittently along a second direction, the first direction is opposite to the second direction, the angle of the intermittent rotation of the rotating shaft 3 along the first direction is greater than the angle of the intermittent rotation along the second direction, a cleaning mechanism 8 is installed inside the screening box 1, and the cleaning mechanism 8 is arranged above the sieve plate 2.

[0034] The driving rod 5 is driven to swing back and forth by the power mechanism 6. When the driving rod 5 rotates in the first direction, the one-way bearing 4 is locked, thereby driving the rotating shaft 3 to rotate in the first direction. When the driving rod 5 rotates in the second direction, the one-way bearing 4 will not be able to transmit power. At this time, the reverse driving mechanism 7 can drive the rotating shaft 3 to rotate in the second direction, realize the reciprocating rotation of the sieve plate 2, and screen the fish material on the sieve plate 2. Since the angle of the intermittent rotation of the rotating shaft 3 in the first direction is greater than the angle of the intermittent rotation in the second direction, the position of the sieve plate 2 below the cleaning mechanism 8 can be adjusted when the sieve plate 2 reciprocates, so that the sieve plate 2 can be cleaned when the sieve plate 2 is performing the screening operation, so as to avoid the fish material being blocked in the sieve holes of the sieve plate 2 and increase the screening efficiency of the sieve plate 2.

[0035] like Figure 3 and Figure 4 As shown, a baffle plate 101 is fixedly installed inside the screening box 1, and the baffle plate 101 is located above the screening plate 2. A feed port 102 is opened on the upper part of the screening box 1, and the feed port 102 and the cleaning mechanism 8 are respectively located on both sides of the baffle plate 101, and the cleaning mechanism 8 is arranged in front of the feed port 102 along the first direction; preferably, the cleaning mechanism 8 includes a second drive motor 801 and a cleaning roller 802, the second drive motor 801 is connected and fixed to the screening box 1, the cleaning roller 802 is connected and fixed to the output end of the second drive motor 801, and bristles 803 are fixed on the outside of the cleaning roller 802, and the bristles 803 are arranged in a spiral shape, and a first discharge port 103 is provided on one side of the screening box 1, and the first discharge port 103 is located below the cleaning roller 802.

[0036] The fish material falling onto the top of the sieve plate 2 from the feed port 102 will be screened during the reciprocating rotation of the sieve plate 2, and will be able to gradually move toward the side of the baffle 101 as the sieve plate 2 rotates, and the fish material larger than the inner diameter of the sieve holes of the sieve plate 2 will gather on the side of the baffle 101; the second drive motor 801 will drive the cleaning roller 802 to rotate, and the bristles 803 on the outside of the cleaning roller 802 can clean the fish material blocked in the sieve holes of the sieve plate 2. Since the bristles 803 are arranged in a spiral shape, during the rotation of the bristles 803, the fish material above the sieve plate 2 can be pushed toward the first discharge port 103, and finally discharged outward through the first discharge port 103.

[0037] In addition, a collecting chamber 104 is provided inside the sieve box 1, and the collecting chamber 104 is located below the sieve plate 2. A push plate 201 is fixedly installed at the lower part of the sieve plate 2. A second discharge port 105 is provided at the lower part of the sieve box 1, and the second discharge port 105 is connected with the collecting chamber 104. Fish materials with a diameter smaller than the inner diameter of the sieve hole of the sieve plate 2 will pass through the sieve plate 2 and enter the collecting chamber 104 downward; during the rotation of the sieve plate 2, the fish materials in the collecting chamber 104 can be pushed to move to the second discharge port 105 by the push plate 201, and discharged outward through the second discharge port 105.

[0038] like Figure 5 and Figure 6 As shown, the power mechanism 6 includes a first driving motor 601, a limiting rod 602 and a rocking rod 603, the limiting rod 602 is rotatably connected to the driving rod 5, a limiting groove is provided in the middle of the limiting rod 602, the rocking rod 603 is arranged in a Z shape, one end of the rocking rod 603 is slidably inserted in the limiting groove, and the other end is connected and fixed to the output end of the first driving motor 601. The first driving motor 601 can drive the rocking rod 603 to rotate in a circle, the end of the rocking rod 603 can move up and down in the limiting groove, and the limiting rod 602 pushes the driving rod 5 to reciprocate, thereby providing power for the sieve plate 2 to rotate along the second direction.

[0039] like Figure 7 As shown, the reverse drive mechanism 7 includes a driving ring 701, a guide rail 702 and a limit pin 703. The driving ring 701 is fixedly sleeved on the outside of the rotating shaft 3. A plurality of limit pins 703 are provided, and the plurality of limit pins 703 are arranged in a ring shape with equal intervals. The limit pin 703 is slidably inserted in the driving ring 701. The guide rail 702 is located below the driving ring 701 and is fixedly connected to the screening box 1 for supporting the limit pin 703 upward. A notch is provided on one side of the guide rail 702. The guide rail 702 is divided into a horizontal portion 7021 and an inclined portion 7022. One end of the horizontal portion 7021 is fixedly connected to the inclined portion 7022, and the other end of the horizontal portion 7021 is located below the rotation range of the driving rod 5. A sliding groove 7031 is provided in the middle of the limit pin 703. The limit pin 703 is vertically limited and slidably connected to the driving ring 701 through the sliding groove 7031. The arc between two adjacent limit pins 703 is smaller than the maximum rotation arc of the driving rod 5.

[0040] When the power mechanism 6 drives the driving rod 5 to rotate in the first direction, the driving rod 5 can drive the rotating shaft 3 to rotate through the one-way bearing 4. When the driving ring 701 rotates with the rotating shaft 3, the limit pin 703 located above the horizontal part 7021 will move to the side of the notch. When the limit pin 703 moves to the notch, the limit pin 703 loses the support of the horizontal part 7021 and will move downward relative to the driving ring 701. The upper end of the limit pin 703 will be lower than the position of the driving rod 5; when the driving rod 5 rotates in the second direction, it will be divided into two driving rotations. State; in the first driving state, the driving rod 5 can pass over the limit pin 703 that falls downward from the top, and at this time the driving rod 5 cannot drive the rotating shaft 3 to rotate; when the arc of the driving rod 5 rotating along the second direction is greater than the arc between two adjacent limit pins 703, the driving rod 5 will be in the second driving state, in which the driving rod 5 will contact the limit pin 703 above the end of the horizontal part 7021, and with the help of the limit pin 703, the driving ring 701 and the rotating shaft 3 will rotate in the second direction with an arc less than that in the first direction. By repeating the above process, the limit pin 703 can gradually fall into the notch, and move back to the top of the horizontal part 7021 through the inclined part 7022, so as to realize the screening and rotation functions of the sieve plate 2.

[0041] Preferably, a boss 7032 is provided at the lower part of the limit pin 703, and an avoidance groove 7023 is opened on the side of the horizontal part 7021 close to the notch, and the avoidance groove 7023 is arranged in an arc shape, and the width of the avoidance groove 7023 is smaller than the size of the boss 7032 and larger than the size of the limit pin 703; the limit pin 703 can be supported above the avoidance groove 7023 with the help of the boss 7032, and when the limit pin 703 falls into the notch and in the process of the driving rod 5 rotating along the second direction, the limit pin 703 fallen into the notch can slide into the avoidance groove 7023, so that the rotation arc of the rotating shaft 3 in the second direction will not be restricted by the arc between the two adjacent limit pins 703.

[0042] Embodiment 2:

[0043] The present application provides a screening method, which is applied to a screening device for fish material processing described in Example 1, comprising the following steps:

[0044] S1, using the power mechanism 6 to drive the driving rod 5 to reciprocate, and transmitting the power of the driving rod 5 to the rotating shaft 3 through the one-way bearing 4, driving the rotating shaft 3 to intermittently rotate along the first direction;

[0045] S2, using the reverse driving mechanism 7 to drive the rotating shaft 3 to intermittently rotate in the second direction in the reverse direction during the gap when the rotating shaft 3 intermittently rotates in the first direction, and keeping the angle of the intermittent rotation in the second direction smaller than the angle of the intermittent rotation in the first direction;

[0046] S3, conveying the fish material to the upper part of the sieve plate 2, and using the reciprocating sieve plate 2 to screen the fish material;

[0047] S4. Clean the sieve plate 2 using the cleaning mechanism 8 to prevent the sieve plate 2 from being blocked.

[0048] By adopting the above screening method, the sieve plate 2 can be cleaned during the screening process of the sieve plate 2, thereby increasing the screening efficiency of the sieve plate 2.

Claims

1. A screening device for fish material processing, characterized in that: The invention comprises a screening box (1), wherein a screening plate (2) is rotatably mounted inside the screening box (1), a rotating shaft (3) is fixedly connected to the middle of the screening plate (2), a one-way bearing (4) is fixedly sleeved on the outer side of the rotating shaft (3), a driving rod (5) is fixedly connected to the outer side of the one-way bearing (4), a power mechanism (6) is mounted at the lower part of the screening box (1), the power mechanism (6) is used to drive the driving rod (5) to swing back and forth, the driving rod (5) can drive the rotating shaft (3) to rotate intermittently in a first direction through the one-way bearing (4), a reverse driving mechanism (7) is mounted at the lower part of the screening box (1), the reverse driving mechanism (7) is used to drive the rotating shaft (3) to rotate intermittently in a second direction, the first direction is opposite to the second direction, the angle of the intermittent rotation of the rotating shaft (3) in the first direction is greater than the angle of the intermittent rotation in the second direction, and a cleaning mechanism (8) is mounted inside the screening box (1), the cleaning mechanism (8) is arranged above the screening plate (2).

2. A screening device for fish material processing according to claim 1, characterized in that: A baffle (101) is fixedly installed inside the screening box (1), and the baffle (101) is located above the screening plate (2). A feed inlet (102) is opened at the top of the screening box (1), and the feed inlet (102) and the cleaning mechanism (8) are respectively located on both sides of the baffle (101), and the cleaning mechanism (8) is arranged in front of the feed inlet (102) along the first direction.

3. A screening device for fish material processing according to claim 1, characterized in that: The power mechanism (6) comprises a first drive motor (601), a limit rod (602) and a rocker (603); the limit rod (602) is rotatably connected to the drive rod (5); a limit slot is provided in the middle of the limit rod (602); the rocker (603) is arranged in a Z shape; one end of the rocker (603) is slidably inserted in the limit slot, and the other end is fixedly connected to the output end of the first drive motor (601).

4. A screening device for fish material processing according to claim 1, characterized in that: The reverse drive mechanism (7) comprises a drive ring (701), a guide rail (702) and a limit pin (703); the drive ring (701) is fixedly sleeved on the outside of the rotating shaft (3); a plurality of limit pins (703) are provided, and the plurality of limit pins (703) are arranged in a ring shape with equal intervals; the limit pin (703) is slidably inserted in the drive ring (701); the guide rail (702) is located below the drive ring (701) and is connected and fixed to the screening box (1) for supporting the limit pin (703) upward; a notch is provided on one side of the guide rail (702); the guide rail (702) is divided into a horizontal portion (7021) and an inclined portion (7022); one end of the horizontal portion (7021) is connected and fixed to the inclined portion (7022), and the other end of the horizontal portion (7021) is located below the rotation range of the drive rod (5).

5. A screening device for fish material processing according to claim 4, characterized in that: A sliding groove (7031) is provided in the middle of the limiting pin (703), and the limiting pin (703) is vertically limitedly slidably connected to the driving ring (701) through the sliding groove (7031).

6. A screening device for fish material processing according to claim 4, characterized in that: A boss (7032) is provided at the lower part of the limiting pin (703), and an avoidance groove (7023) is provided on a side of the horizontal part (7021) close to the notch. The avoidance groove (7023) is arranged in an arc shape, and the width of the avoidance groove (7023) is smaller than the size of the boss (7032) and larger than the size of the limiting pin (703).

7. A screening device for fish material processing according to claim 4, characterized in that: The arc between two adjacent limit pins (703) is smaller than the maximum rotation arc of the driving rod (5).

8. A screening device for fish material processing according to claim 1, characterized in that: The cleaning mechanism (8) comprises a second drive motor (801) and a cleaning roller (802); the second drive motor (801) is connected and fixed to the screening box (1); the cleaning roller (802) is connected and fixed to the output end of the second drive motor (801); bristles (803) are fixed to the outside of the cleaning roller (802); the bristles (803) are arranged in a spiral shape; a first discharge port (103) is provided on one side of the screening box (1); the first discharge port (103) is located below the cleaning roller (802).

9. A screening device for fish material processing according to claim 1, characterized in that: The screening box (1) has a collecting chamber (104) disposed inside, the collecting chamber (104) being located below the screening plate (2), a push plate (201) being fixedly mounted at the lower portion of the screening plate (2), and a second discharge port (105) disposed at the lower portion of the screening box (1), the second discharge port (105) being communicated with the collecting chamber (104).

10. A screening method, applied to a screening device for fish material processing as claimed in any one of claims 1 to 9, characterized in that: The following steps are involved: S1, using a power mechanism (6) to drive a driving rod (5) to reciprocate, and transmitting the power of the driving rod (5) to the rotating shaft (3) through a one-way bearing (4), so as to drive the rotating shaft (3) to intermittently rotate in a first direction; S2, using the reverse driving mechanism (7) to drive the rotating shaft (3) to intermittently rotate in the second direction in the reverse direction during the gap when the rotating shaft (3) is intermittently rotating in the first direction, and to keep the angle of the intermittent rotation in the second direction smaller than the angle of the intermittent rotation in the first direction; S3, conveying the fish material to the upper part of the sieve plate (2), and screening the fish material by using the reciprocating sieve plate (2); S4. Clean the sieve plate (2) using the cleaning mechanism (8) to prevent the sieve plate (2) from being blocked.

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