阅读说明：本技术 一种具有防缠绕结构的对虾分级机 (Prawn grader with anti-winding structure ) 是由 弋景刚 王泽河 张秀花 孔德刚 刘江涛 袁永伟 王家忠 李珊珊 于 2021-03-12 设计创作，主要内容包括：本发明公开一种具有防缠绕结构的对虾分级机,包括分级床,分级床包括机架,机架上安装有动力机构、分级机构、防缠绕机构和出料机构；分级机构包括倾斜设置的若干组分级辊,分级辊包括固定辊和活动辊,固定辊两端和活动辊两端均转动连接有轴承座,固定辊通过轴承座与机架固定连接,活动辊通过轴承座与机架滑动连接,活动辊与固定辊交替布置；防缠绕机构包括设置在分级辊上方的若干个防缠辊,防缠辊与分级辊滑动连接；防缠辊两端固定连接有弹簧压紧机构,弹簧压紧机构与机架固定连接。本发明提供的具有防缠绕结构的对虾分级机,通过增加防缠辊,利用防缠辊排开缠绕在分级辊上的虾须,防止因虾须缠绕而发生的窜级现象,提高了分级精度。(The invention discloses a prawn grader with an anti-winding structure, which comprises a grading bed, wherein the grading bed comprises a rack, and a power mechanism, a grading mechanism, an anti-winding mechanism and a discharging mechanism are arranged on the rack; the grading mechanism comprises a plurality of groups of grading rollers which are obliquely arranged, each grading roller comprises a fixed roller and a movable roller, two ends of each fixed roller and two ends of each movable roller are rotatably connected with bearing seats, the fixed rollers are fixedly connected with the rack through the bearing seats, the movable rollers are slidably connected with the rack through the bearing seats, and the movable rollers and the fixed rollers are alternately arranged; the anti-winding mechanism comprises a plurality of anti-winding rollers arranged above the grading rollers, and the anti-winding rollers are connected with the grading rollers in a sliding manner; and the two ends of the anti-winding roller are fixedly connected with a spring pressing mechanism, and the spring pressing mechanism is fixedly connected with the rack. According to the prawn grader with the anti-winding structure, the anti-winding roller is additionally arranged, and prawn whiskers wound on the grading roller are discharged by the anti-winding roller, so that the grading phenomenon caused by winding of the prawn whiskers is prevented, and the grading precision is improved.)

1. A prawn grader with an anti-winding structure comprises a grading bed and is characterized in that the grading bed comprises a rack (1), and a power mechanism (5), a grading mechanism, an anti-winding mechanism and a discharging mechanism (9) are mounted on the rack (1); the grading mechanism comprises a plurality of groups of grading rollers which are obliquely arranged, each grading roller comprises a fixed roller (2) and a movable roller (3), bearing seats are rotatably connected to two ends of each fixed roller (2) and two ends of each movable roller (3), each fixed roller (2) is fixedly connected with the rack (1) through the corresponding bearing seat, each movable roller (3) is slidably connected with the corresponding rack (1) through the corresponding bearing seat, and the movable rollers (3) and the fixed rollers (2) are alternately arranged; the anti-winding mechanism comprises a plurality of anti-winding rollers (7) arranged above the grading rollers, and the anti-winding rollers (7) are connected with the grading rollers in a sliding manner; and two ends of the anti-winding roller (7) are fixedly connected with spring pressing mechanisms, and the spring pressing mechanisms are fixedly connected with the rack (1).

2. The prawn grader of claim 1, wherein: the grading roller is characterized in that distance adjusting mechanisms (4) are arranged at two ends of the grading roller, each distance adjusting mechanism (4) comprises a distance adjusting motor (41) fixedly mounted on the rack (1), an output shaft of each distance adjusting motor (41) is fixedly connected with a lead screw (43) through a coupler (42), the rack (1) is fixedly connected with a lead screw support (45), the tail end of each lead screw (43) is rotatably connected with the rack (1) through the lead screw support (45), and a bearing seat on the movable roller (3) is in threaded connection with the distance adjusting lead screw (43); the machine frame (1) is fixedly connected with a sliding rail (44), and a bearing seat on the movable roller (3) is connected with the sliding rail (44) in a sliding manner.

3. The prawn grader of claim 1, wherein: the grading roller is a stepped roller, and the roller diameter of the lower end of the grading roller is smaller than that of the higher end of the grading roller.

4. The prawn grader of claim 1, wherein: the anti-winding roller (7) comprises an anti-winding roller shaft (71) and a plurality of anti-winding roller bodies (72) sleeved on the anti-winding roller shaft (71), wherein the anti-winding roller bodies (72) are connected with the anti-winding roller shaft (71) in a sliding mode; the anti-winding roller bodies (72) are respectively arranged corresponding to the fixed roller (2) and the movable roller (3), and the anti-winding roller shafts (71) are fixedly connected with the spring pressing mechanism.

5. The prawn grader of claim 4, wherein: arc-shaped grooves (73) are formed in the circumferential direction of the anti-winding roller body (72), and the fixed roller (2) and the movable roller (3) are connected with the anti-winding roller body (72) in a sliding mode through the arc-shaped grooves (73).

6. The prawn grader of claim 4, wherein: the spring pressing mechanism comprises a supporting rod (61) fixed on the rack (1) and an anti-winding roller support (6) sleeved on the supporting rod (61), and the anti-winding roller support (6) is arranged along the length direction of the grading roller; the top end of the supporting rod (61) is fixedly connected with a baffle (62), a spring (63) is sleeved on the supporting rod (61), and two ends of the spring (63) are respectively and fixedly connected with the baffle (62) and the anti-winding roller support (6); and two ends of the anti-winding roll shaft (71) are respectively and fixedly connected with the anti-winding roll support (6).

7. The prawn grader of claim 1, wherein: the power mechanism (5) comprises a driving motor (51), a driving chain wheel (52), a driven chain wheel (53), a transmission chain (54), a tensioning device (55) and a tensioning chain wheel (56); the driving motor (51) is fixedly connected with the rack (1), and the driving chain wheel (52) is in transmission connection with the driving motor (51); the fixed roller (2) and the movable roller (3) are both fixedly provided with the driven chain wheel (53), the driving chain wheel (52) is in transmission connection with the driven chain wheel (53) through the transmission chain (54), and the rotating direction of the fixed roller (2) is opposite to that of the movable roller (3); the tensioning device (55) is fixedly mounted on the frame (1), the tensioning chain wheel (56) is positioned below the driven chain wheel (53), the tensioning chain wheel (56) is hinged with the tensioning device (55), and the bottom of the tensioning chain wheel (56) is meshed with the driven chain wheel (53).

8. The prawn grader of claim 1, wherein: the feeding mechanism is arranged on the rack (1) and comprises a feeding guide plate (8) and a flow distribution plate (81), the feeding guide plate (8) is fixedly connected with the rack (1), and the feeding guide plate (8) is positioned above one end of the grading roller; flow distribution plate (81) fixed connection be in the bottom of pan feeding baffle (8), flow distribution plate (81) are located the classifying roller top, flow distribution plate (81) are the type of falling V structure.

9. The prawn grader of claim 1, wherein: discharge mechanism (9) include a plurality of ejection of compact conveyer belt (91) and division board (92), ejection of compact conveyer belt (91) are followed hierarchical roller length direction sets up, division board (92) set up in every the both sides of ejection of compact conveyer belt (91), division board (92) top with frame (1) fixed connection.

Technical Field

The invention relates to the technical field of prawn grading equipment, in particular to a prawn grader with an anti-winding structure.

Background

In the automatic production process of prawns, the first procedure is cleaning and grading, and grading of prawns is a necessary condition for efficient mechanical automatic processing. The double-roller type prawn grader is the most widely applied prawn grader in China at present. The radius of the roller is reduced in a step shape, and the gap between the roller and the roller is gradually increased, so that prawns with different sizes fall at the position corresponding to the width of the gap and fall onto different discharging conveying belts, and the purpose of grading is achieved. The grading machine has the advantages of simple structure, stable operation, low price and the like, but the grading precision is lower. Especially, the excessively long shrimps need to be wound on the grading roller, and the shrimps cannot fall normally when the gap between the two rollers is larger than the thickness of the shrimps, so that the grading effect is seriously influenced. Therefore, it is urgently required to develop a device for preventing shrimp from being tangled on the double-roller grader.

Disclosure of Invention

The invention aims to provide a prawn grader with an anti-winding structure, which is used for solving the problems in the prior art.

In order to achieve the purpose, the invention provides the following scheme: the invention provides a prawn grader with an anti-winding structure, which comprises a grading bed, wherein the grading bed comprises a rack, and a power mechanism, a grading mechanism, an anti-winding mechanism and a discharging mechanism are arranged on the rack; the grading mechanism comprises a plurality of groups of grading rollers which are obliquely arranged, each grading roller comprises a fixed roller and a movable roller, bearing seats are rotatably connected to two ends of each fixed roller and two ends of each movable roller, the fixed rollers are fixedly connected with the rack through the bearing seats, the movable rollers are slidably connected with the rack through the bearing seats, and the movable rollers and the fixed rollers are alternately arranged; the anti-winding mechanism comprises a plurality of anti-winding rollers arranged above the grading rollers, and the anti-winding rollers are connected with the grading rollers in a sliding manner; and the two ends of the anti-winding roller are fixedly connected with a spring pressing mechanism, and the spring pressing mechanism is fixedly connected with the rack.

Preferably, two ends of the classifying roller are provided with spacing adjusting mechanisms, each spacing adjusting mechanism comprises a spacing adjusting motor fixedly mounted on the frame, an output shaft of each spacing adjusting motor is fixedly connected with a lead screw through a coupler, the frame is fixedly connected with a lead screw support, the tail end of each lead screw is rotatably connected with the frame through the lead screw support, and a bearing seat on the movable roller is in threaded connection with the spacing adjusting lead screw; the frame is fixedly connected with a slide rail, and a bearing seat on the movable roller is connected with the slide rail in a sliding manner.

Preferably, the classifying rollers are stepped rollers, and the roller diameter of the lower end of the classifying roller is smaller than that of the higher end of the classifying roller.

Preferably, the anti-winding roller comprises an anti-winding roller shaft and a plurality of anti-winding roller bodies sleeved on the anti-winding roller shaft, and the anti-winding roller bodies are connected with the anti-winding roller shaft in a sliding manner; the anti-winding roller bodies are respectively arranged corresponding to the fixed roller and the movable roller, and the anti-winding roller shafts are fixedly connected with the spring pressing mechanism.

Preferably, the anti-winding roller body is circumferentially provided with an arc-shaped groove, and the fixed roller and the movable roller are both connected with the anti-winding roller body in a sliding manner through the arc-shaped groove.

Preferably, the spring pressing mechanism comprises a support rod fixed on the rack and an anti-winding roller support sleeved on the support rod, and the anti-winding roller support is arranged along the length direction of the grading roller; the top end of the supporting rod is fixedly connected with a baffle, the supporting rod is sleeved with a spring, and two ends of the spring are respectively and fixedly connected with the baffle and the anti-winding roller support; and two ends of the anti-winding roll shaft are respectively fixedly connected with the anti-winding roll support.

Preferably, the power mechanism comprises a driving motor, a driving chain wheel, a driven chain wheel, a transmission chain, a tensioning device and a tensioning chain wheel; the driving motor is fixedly connected with the rack, and the driving chain wheel is in transmission connection with the driving motor; the fixed roller and the movable roller are both fixedly provided with the driven chain wheel, the driving chain wheel is in transmission connection with the driven chain wheel through the transmission chain, and the rotating direction of the fixed roller is opposite to that of the movable roller; the tensioning device is fixedly installed on the rack, the tensioning chain wheel is located below the driven chain wheel and hinged to the tensioning device, and the bottom of the tensioning chain wheel is meshed with the driven chain wheel.

Preferably, the frame is provided with a feeding mechanism, the feeding mechanism comprises a feeding guide plate and a flow distribution plate, the feeding guide plate is fixedly connected with the frame, and the feeding guide plate is positioned above one end of the grading roller; the flow distribution plate is fixedly connected to the bottom of the feeding guide plate, the flow distribution plate is located above the grading rollers, and the flow distribution plate is of an inverted V-shaped structure.

Preferably, the discharging mechanism comprises a plurality of discharging conveying belts and partition plates, the discharging conveying belts are arranged along the length direction of the grading rollers, the partition plates are arranged on two sides of each discharging conveying belt, and the top ends of the partition plates are fixedly connected with the rack.

The invention discloses the following technical effects: according to the prawn grader with the anti-winding structure, the anti-winding roller is additionally arranged, and prawn whiskers wound on the grading roller are discharged by the anti-winding roller, so that the grading phenomenon caused by winding of the prawn whiskers is prevented, and the grading precision is improved.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without inventive exercise.

FIG. 1 is a schematic view of the whole axial side structure of the prawn grader of the present invention;

FIG. 2 is a top view of the pitch adjustment mechanism of the present invention;

FIG. 3 is a schematic structural diagram of the transmission mechanism of the present invention;

FIG. 4 is a schematic structural view of an anti-wind-up roll according to the present invention;

wherein, the frame-1; a fixed roller-2; a movable roller-3; a spacing adjustment mechanism-4; a distance adjusting motor-41; a coupling-42; a screw rod-43; a slide-rail-44; screw rod support-45; a power mechanism-5; a drive motor-51; a drive sprocket-52; a driven sprocket-53; a drive chain-54; a tensioner-55; a tension sprocket-56; an anti-winding roller support-6; a support bar-61; a baffle-62; a spring-63; anti-winding roller-7; an anti-wind roller shaft-71; an anti-winding roller body-72; an arc-shaped groove-73; a feeding guide plate-8; a splitter plate-81; a discharging mechanism-9; a discharge conveyer belt-91; splitter plate-92

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in further detail below.

The invention provides a prawn grader with an anti-winding structure, which comprises a grading bed, wherein the grading bed comprises a rack 1, and a power mechanism 5, a grading mechanism, an anti-winding mechanism and a discharging mechanism 9 are arranged on the rack 1; the grading mechanism comprises six groups of grading rollers which are obliquely arranged, each grading roller comprises a fixed roller 2 and a movable roller 3, two ends of each fixed roller 2 and two ends of each movable roller 3 are rotatably connected with bearing seats, each fixed roller 2 is fixedly connected with the rack 1 through the corresponding bearing seat, each movable roller 3 is slidably connected with the rack 1 through the corresponding bearing seat, and the movable rollers 3 and the fixed rollers 2 are alternately arranged; the anti-winding mechanism comprises four anti-winding rollers 7 arranged above the grading rollers, and the anti-winding rollers 7 are connected with the grading rollers in a sliding manner; and two ends of the anti-winding roller 7 are fixedly connected with spring pressing mechanisms, and the spring pressing mechanisms are fixedly connected with the rack 1.

Further, in order to adjust the distance between the fixed roller 2 and the movable roller 3 and improve the application range of the prawn grader, distance adjusting mechanisms 4 are arranged at two ends of the grading roller, each distance adjusting mechanism 4 comprises a distance adjusting motor 41 fixedly mounted on the rack 1, an output shaft of each distance adjusting motor 41 is fixedly connected with a lead screw 43 through a coupling 42, a lead screw support 45 is fixedly connected on the rack 1, the tail end of each lead screw 43 is rotatably connected with the rack 1 through the corresponding lead screw support 45, and a bearing seat on the movable roller 3 is in threaded connection with the corresponding distance adjusting lead screw 43; the frame 1 is fixedly connected with a slide rail 44, and a bearing seat on the movable roller 3 is connected with the slide rail 44 in a sliding manner. The pitch motors 41 of the two pitch adjusting mechanisms 4 synchronously rotate, the pitch motors 41 drive the lead screws 43 to rotate, and the lead screws drive the movable rollers 3 to horizontally move left and right, so that the axial distance and the roller gap between each group of the fixed rollers 2 and the movable rollers 3 are changed, and the purpose of adjusting the prawn classification interval according to actual conditions is achieved.

Furthermore, in order to facilitate the graded screening of the prawns, the grading roller is a stepped roller, the roller diameter of the lower end of the grading roller is smaller than that of the higher end of the grading roller, the roller diameter is gradually changed, and the roller gaps are sequentially increased from top to bottom.

Further, in order to improve the grading precision of the prawns, the anti-winding roller 7 comprises an anti-winding roller shaft 71 and twelve anti-winding roller bodies 72 sleeved on the anti-winding roller shaft 71, wherein the anti-winding roller bodies 72 are connected with the anti-winding roller shaft 71 in a sliding manner; twelve anti-winding roller bodies 72 are respectively arranged corresponding to the fixed roller 2 and the movable roller 3, and the anti-winding roller shaft 71 is fixedly connected with the spring pressing mechanism.

Further, in order to ensure the anti-winding effect, an arc-shaped groove 73 is formed in the circumferential direction of the anti-winding roller body 72, and the fixed roller 2 and the movable roller 3 are both connected with the anti-winding roller body 72 in a sliding mode through the arc-shaped groove 73.

Further, in order to keep a certain pressure between the anti-winding roller body 72 and the classifying roller and further ensure the anti-winding effect of the prawns, the spring pressing mechanism comprises a support rod 61 fixed on the rack 1 and an anti-winding roller support 6 sleeved on the support rod 61, and the anti-winding roller support 6 is arranged along the length direction of the classifying roller; the top end of the supporting rod 61 is fixedly connected with a baffle 62, a spring 63 is sleeved on the supporting rod 61, and two ends of the spring 63 are respectively and fixedly connected with the baffle 62 and the anti-winding roller support 6; and two ends of the anti-winding roll shaft 71 are respectively and fixedly connected with the anti-winding roll support 6. Every two anti-winding roller bodies 72 correspond to a group of classifying rollers, the anti-winding roller bodies 72 are lightly pressed on the classifying rollers through springs 63, and the anti-winding roller bodies 72 can move along with the movement of the movable classifying rollers. If the prawns and shrimps need to be wound on the classifying roller, the prawns and shrimps are discharged after touching the anti-winding roller body 72 on the classifying roller, and the prawns and shrimps can fall normally.

Further, in order to prevent the shrimps from being clamped by the classifying rollers when falling in the gap between the classifying rollers and failing to fall normally, and the classifying precision is influenced, the power mechanism 5 comprises a driving motor 51, a driving chain wheel 52, a driven chain wheel 53, a transmission chain 54, a tensioning device 55 and a tensioning chain wheel 56; the driving motor 51 is fixedly connected with the frame 1, and the driving chain wheel 52 is in transmission connection with the driving motor 51; the fixed roller 2 and the movable roller 3 are both fixedly provided with the driven chain wheel 53, the driving chain wheel 52 is in transmission connection with the driven chain wheel 53 through the transmission chain 54, and the rotating direction of the fixed roller 2 is opposite to that of the movable roller 3; the tensioning device 55 is fixedly mounted on the frame 1, the tensioning chain wheel 56 is positioned below the driven chain wheel 53, the tensioning chain wheel 56 is hinged with the tensioning device 55, and the bottom of the tensioning chain wheel 56 is meshed with the driven chain wheel 53. When the driving motor 51 is started, the driving chain wheel 52 drives the transmission chain 54 to drive the driven chain wheel 53 to rotate, so that each group of fixed rollers 2 and each group of movable rollers 3 rotate reversely, and prawns are prevented from being clamped by two rollers when falling in a roller gap and falling normally to influence the grading precision. The tensioning device 55 is used for providing a proper tensioning force, so that the normal operation of the power mechanism 5 is ensured, and the service life of the power mechanism 5 is prolonged.

Further, in order to enable the prawns to be distributed on the grading bed more uniformly, a feeding mechanism is arranged on the rack 1, the feeding mechanism comprises a feeding guide plate 8 and a flow distribution plate 81, the feeding guide plate 8 is fixedly connected with the rack 1, and the feeding guide plate 8 is positioned above one end of the grading roll; the flow distribution plate 81 is fixedly connected to the bottom of the feeding guide plate 8, the flow distribution plate 81 is located above the grading rollers, and the flow distribution plate 81 is of an inverted V-shaped structure. After the prawn feeding, through the arrangement of the feeding guide plate 8 and the flow distribution plate 81, the prawn can be accurately guided to fall into the gap between each group of the fixed rollers 2 and the movable rollers 3 and slide downwards along the inclined direction of the rollers, and when the thickness of the prawn body is smaller than the gap between the rollers, the prawn body falls down between the two rollers and falls into the discharging mechanism 9 to finish classification.

Further, discharge mechanism 9 includes a plurality of ejection of compact conveyer belt 91 and division board 92, ejection of compact conveyer belt 91 is followed hierarchical roller length direction sets up, division board 92 sets up in every ejection of compact conveyer belt 91's both sides, division board 92 top with frame 1 fixed connection.

In the description of the present invention, it is to be understood that the terms "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on those shown in the drawings, are merely for convenience of description of the present invention, and do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be construed as limiting the present invention.

The above-described embodiments are merely illustrative of the preferred embodiments of the present invention, and do not limit the scope of the present invention, and various modifications and improvements of the technical solutions of the present invention can be made by those skilled in the art without departing from the spirit of the present invention, and the technical solutions of the present invention are within the scope of the present invention defined by the claims.