Shrimp-peeling machine
阅读：614发布：2021-02-28
专利汇可以提供Shrimp-peeling machine专利检索，专利查询，专利分析的服务。并且A machine for peeling shrimps, in which shrimps are advanced in a channel formed by two counterrotating rollers. A shrimp is aligned so that its ventral side faces downwards in the channel, and while the shrimp is pressed down into the channel its dorsal shell is loosened from the meat by means of knives rotating with the rollers. After that, a longitudinal pull is exerted on the shrimp to separate its head from the edible meat. The shrimp may also be aligned in the head-to-tail direction. The aligning means may be mechanical or comprise liquid jets.，下面是Shrimp-peeling machine专利的具体信息内容。
1. A machine for peeling shrimps, comprising a first roller and a second roller, means for rotatably supporting said first and second rollers in parallel relationship to form therebetween a shrimp-feeding channel having an inlet end and an outlet end, means for continuously rotating said first and second rollers in opposite directions so that in said channel the roller surfaces move upwards against shrimps advancing in said channel, aligning means located upstream of said channel inlet end and arranged for orientating shrimps sidewise so that shrimps are discharged from said aligning means into said channel with their ventral side facing downwards in said channel, means for supplyIng shrimps to said aligning means, radially projecting cutting means secured to each roller at said channel outlet end, means located above said cutting means for engaging the dorsal side of a shrimp to press said shrimp down into said channel, and means located downstream of said outlet end for tearing the head of a shrimp from the body portion thereof.
2. A machine as claimed in claim 1 wherein said aligning means comprises a pair of turning rolls, means for supporting each of said rolls coaxially with one of said rollers and means for driving said turning rolls in synchronous oscillating movements independently of the rotation of said rollers.
3. A machine as claimed in claim 2 in which at least the surface of said turning rolls is made of rubberlike material, and further comprising means for applying a spray of water to one of said turning rolls.
4. A machine as claimed in claim 1 comprising a helically extending feeding rib projecting from the surface of each of said rollers, said rib having a larger pitch in the region of said aligning means than upstream of said means.
5. A machine as claimed in claim 1 further comprising aligning means for endwise orientation of shrimps advancing in said feeding channel.
6. A machine as claimed in claim 5 wherein said endwise orienting means comprises a V-shaped member pivotally supported on a horizontal axis above an transverse to said feeding channel, the apex of said member being located between the roller surfaces in said groove.
7. A machine as claimed in claim 6, wherein said V-shaped member is bent from a piece of wire and provided with an enlargement in the apex thereof.
8. A machine as claimed in claim 5, wherein endwise orienting means are located both upstream and downstream of said sidewise orienting means.
9. A machine as claimed in claim 1, wherein said head-tearing means comprises a first disc, means for rotatably supporting said disc on a substantially horizontal axis perpendicular to said roller axes, two further discs having a larger diameter than said first disc and each supported on one side thereof and coaxially therewith, and means for rotating said first disc and said further discs in opposite directions on said common axis.
10. A machine as claimed in claim 9 comprising at least one spike secured to and projecting radially from the periphery of said first disc.
11. A machine as claimed in claim 9 comprising means for axially adjusting each of said further discs with respect to said first disc.
12. A machine as claimed in claim 9 wherein said dorsal-engaging means comprises a frame, means for pivotally supporting said frame on a substantially horizontal axis spaced from the outlet end of said feeding channel, first and second pulleys rotatably supported in said frame, a belt trained over said pulleys and having a lower strand between said pulleys which normally extends substantially parallel to said feeding channel, and drive means for rotating said first pulley.
13. A machine as claimed in claim 12 comprising means for continuous adjustment of the rotational speed of said first pulley.
14. A machine as claimed in claim 9 comprising means for adjusting the distance from the outlet end of said feeding channel to the axis of said rotary discs.
15. A machine as claimed in claim 1, wherein said head-tearing means comprises two pairs of rollers, means for rotatably supporting said rollers with substantially vertical axes located in planes perpendicular to the longitudinal direction of said feeding channel and spaced from each other in said longitudinal direction, means for resiliently biasing the rollers of each pair towards one another, and means for synchronously rotating said roller pairs in opposite directions and with peripheral speeds, the peripheral speed of the rollers remote from the outlet end of said feeding channel being larger than the speed of the other pair of rollers.
16. A machine as claimed in claim 15 comprising means for varying the spacing between said Pairs of rollers.
17. A machine as claimed in claim 15 further comprising a pair of guide rollers rotatably supported on vertical axes between said channel and said first pair of tearing rollers, means for resiliently biasing said guide rollers towards one another to a minimum distance approximately equal to the thickness of a shrimp, and means for synchronously rotating said guide rollers in opposite directions at a peripheral speed substantially equal to that of the first pair of tearing rollers.
18. A machine as claimed in claim 15, wherein said dorsal-engaging means comprises a disc, means for rotatably supporting said disc on a horizontal axis located above said head-tearing means and perpendicular to said feeding channel, and means for rotating said disc about said axis.
19. A machine as claimed in claim 18 comprising spikes secured to and radially projecting from the peripheral surface of said disc.
20. A machine as claimed in claim 19 wherein the projecting parts of said spikes are tapered and rounded at their ends.
21. A machine as claimed in claim 1, wherein said cutting means comprises a plurality of pins secured in and radially projecting from the periphery of each of said feeding rollers, the projecting ends of said pins being flat ground.
22. A machine as claimed in claim 1 further comprising a pair of rollers for pulling the tail shell of a shrimp downwardly through said feeding channel, means for supporting said tail-shell-pulling rollers below and substantially parallel to said first and second rollers and means for rotating said tail-shell-pulling rollers in opposite directions.
23. A machine as claimed in claim 22 in which at least one peripheral groove is provided in the surface of each feeding roller downstream of said knife means.
24. A machine as claimed in claim 1 wherein said shrimp-aligning means and said means for feeding shrimps to the aligning means comprise a third roller rotatably supported in coaxial extension of said first roller, means for continuously rotating said third roller in the same direction as said second roller, a fourth roller secured to said second roller in coaxial extension thereof and parallel with said third roller to form therewith an upstream extension of said feeding channel, and means located adjacent said third and fourth rollers for pressing a shrimp advancing past said pressing means down into said channel extension.
25. A machine as claimed in claim 24 wherein said pressing means comprises a stationary bar having a helical longitudinal edge facing against said channel.
26. A machine as claimed in claim 24 wherein said pressing means comprises at least a first nozzle located so as to deliver a water jet in the direction substantially tangential to the surface of said third roller.
27. A machine as claimed in claim 26 wherein said nozzle is mounted at an angle such that said water jet issues at an angle of between 60* and 90* with the plane containing the two parallel roller axes and inwardly towards said feeding channel extension.
28. A machine as claimed in claim 26 further comprising a second nozzle located downstream of said first nozzle and mounted so as to deliver a water jet in a direction slightly inclined with respect to the plane containing the roller axes and tangentially inwards against the upper surface of said third roller, and a third nozzle located downstream of said second nozzle and substantially identical in structure and location with said first nozzle.
29. A machine as claimed in claim 28 wherein the water jet issuing from said second nozzle forms an angle of 3*-5* with said plane.
30. A machine as claimed in claim 28 further comprising a fourth nozzle located adjacent said third nozzle and mounted so as to deliver a water jet downwardly towards said feeding channel extension substantially tangential to the surface of said third roller.
31. A machine as claimed in claim 30 wherein the water jet from said fourth nozzle formS an angle of 85*-87* with the plane containing the roller axes.
32. A machine as claimed in claim 26 comprising a helically extending feeding rib projecting from the surface of each of said rollers, the pitch of said rib increasing in a stepwise transition in the region of said first nozzle.
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