Manual crayfish shell breaking machine

Abstract

The invention belongs to the technical field of crayfish processing, and relates to a manual crayfish shell breaking machine which comprises a base (9), an upper pressing die (1), a shell breaking platform (2), a shell breaking fodder chopper assembly (3) and a rotating shaft box (7) are installed on the base (9), the upper pressing die (1) and the shell breaking fodder chopper assembly (3) are installed on the rotating shaft box (7) and can rotate relative to the rotating shaft box (7), and the upper pressing die (1) is located above the shell breaking platform (2). The shell breaking fodder chopper assembly (3) is located below the shell breaking platform (2), a shell breaking blade (5) of the shell breaking fodder chopper assembly (3) penetrates through the shell breaking platform (2) and extends upwards, crayfish to be subjected to shell breaking is placed on the shell breaking platform (2), shell breaking is achieved under the cooperation of the upper pressing die (1) and the shell breaking fodder chopper assembly (3), and safety belts (11) are arranged on the upper pressing die (1) and the base (9). The crayfish shell breaking machine solves the problem of crayfish shell breaking in crayfish food production and eating in families and restaurants.

Description

Technical Field

[0001] The present invention belongs to the technical field of crayfish processing, and relates to a crayfish processor, specifically to a manual crayfish shell breaker. Background Art

[0002] The scientific name of crayfish is "arthropod of the genus Procambarus, family Cambaridae, order Decapoda". In the present invention, the common name "crayfish" is still used.

[0003] The shell of crayfish is hard, and there is a layer of red mucous membrane between the shell and the shrimp meat. The special delicious taste of crayfish comes from this mucous membrane. After the crayfish is cooked and the shrimp meat is taken out, it becomes "shrimp meat", but that layer of mucous membrane is damaged and lost during the cleaning and processing. Therefore, the taste of crayfish shrimp meat is far inferior to that of the shell-on cooked shrimp tails and whole shrimps. Due to the hard, smooth and serrated edges of the crayfish shell, it is extremely difficult to break open when eating shell-on cooked crayfish. Therefore, there is a saying that "crayfish is delicious but the shell is difficult to open".

[0004] At present, there is no commercial mechanical equipment for shell-breaking processing of crayfish on the market. Generally, pliers-like shrimp peeling tools are used. However, pliers-like shrimp peeling tools can only take out the shrimps with relatively soft shells such as kuruma shrimps. The shell of crayfish is much harder than that of kuruma shrimps, and the shell shapes are also very different. Therefore, these pliers-like shrimp peeling tools are not suitable for crayfish shell-breaking. Using scissors to cut is too slow. The crayfish shell is in the shape of an arc arch and is hard, so the efficiency of breaking the shell with scissors is too low. And in traditional folk consumption, manual shelling is used, which is inefficient and easy to hurt hands. Therefore, so far, there is no generally accepted crayfish shell-breaking instrument on the market.

[0005] Moreover, compared with common edible shrimps such as kuruma shrimps, due to the disadvantage of the large head and small body of crayfish, the proportion of the actually edible part in the total weight is much smaller than that of other edible shrimps. Through biological dissection experiments, it is found that the abdominal muscles and head muscles of crayfish are an integral whole. However, in traditional crayfish processing, the head is torn off at the soft carapace of the head and abdomen, resulting in part of the muscles in the head being discarded together with the head, causing the head muscles not to be eaten and resulting in great waste.

[0006] Therefore, in view of the defects existing in the prior art, there is an urgent need to develop a manual crayfish shell breaker. Summary of the Invention

[0007] The purpose of the present invention is to overcome the disadvantages existing in the prior art and provide a manual crayfish shell breaker. Manually operating this shell breaker can realize removing the shrimp tail, extracting the shrimp intestine, removing the head and breaking the shell of crayfish. Since the processed shrimp tail is cut 80% along the middle longitudinal line of the shrimp body, the shrimp meat can be easily separated from the shrimp shell, solving the shell-breaking problem in crayfish food production and consumption in families and restaurants.

[0008] To achieve the above object, the present invention provides the following technical solutions:

[0009] A manual crayfish shell-breaking machine, which comprises a base. It is characterized in that an upper pressing die, a shell-breaking platform, a shell-breaking cutter assembly and a rotating shaft box are installed on the base. The upper pressing die and the shell-breaking cutter assembly are installed on the rotating shaft box and can rotate relative to the rotating shaft box. The upper pressing die is located above the shell-breaking platform. The shell-breaking cutter assembly is located below the shell-breaking platform and the shell-breaking blades of the shell-breaking cutter assembly pass through the shell-breaking platform and protrude upward. The crayfish to be shelled is placed on the shell-breaking platform and the shell is broken under the cooperation of the upper pressing die and the shell-breaking cutter assembly. Safety belts are provided on the upper pressing die and the base.

[0010] Preferably, the shell-breaking cutter assembly includes a blade mounting die, shell-breaking blades and a blade pressing plate. The shell-breaking blades are installed on the blade mounting die through the blade pressing plate.

[0011] Preferably, a groove for accommodating the shell-breaking blades is provided on the blade mounting die.

[0012] Preferably, two mounting holes are provided on the blade pressing plate. The shell-breaking blades are pressed and positioned on the blade mounting die through two bolts passing through the mounting holes.

[0013] Preferably, a knife slot for the shell-breaking blades to pass through is provided on the shell-breaking platform, and grooves for receiving the edges of the abdominal shells of the crayfish are respectively provided on both sides of the knife slot.

[0014] Preferably, a first rotating shaft is provided on the upper pressing die, a second rotating shaft is provided on the blade mounting die, and a first shaft hole for the first rotating shaft to pass through and a second shaft hole for the second rotating shaft to pass through are provided on the rotating shaft box.

[0015] Preferably, a return spring is provided between the upper pressing die and the shell-breaking cutter assembly.

[0016] Preferably, a first connecting portion and a crayfish back pressing portion are provided on the lower surface of the upper pressing die, a second connecting portion is provided on the upper surface of the blade mounting die, and the upper end of the return spring is connected to the first connecting portion and the lower end is connected to the second connecting portion.

[0017] Preferably, the manual crayfish shell-breaking machine further includes a tray. The base is placed in the tray so that the tray can receive the dirt flowing out of the crayfish body during shell-breaking.

[0018] Preferably, a limiting block for restricting the movement of the base is provided in the tray.

[0019] Compared with the prior art, the crayfish manual shell-breaking machine of the present invention has one or more of the following beneficial technical effects:

[0020] 1. The crayfish manual shell-breaking machine of the present invention can achieve the shell-breaking of crayfish, so as to quickly obtain shrimp meat, and solves the shell-breaking problem in the production of crayfish food and for household and restaurant consumption.

[0021] 2. The structure of the crayfish manual shell-breaking machine of the present invention is simple, the operation is convenient, the cost is low, and it is convenient to promote and apply.

[0022] 3. The present invention can complete the decapitation of crayfish, extract the shrimp intestine, break the abdominal carapace, etc., and retain the head muscle. After multiple test records, using the shell-breaking machine of the present invention and its corresponding processing method, compared with the traditional processing (edible) method of cutting off the head of crayfish, the meat yield of crayfish can be increased by about 12%. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 is the front view of the crayfish manual shell-breaking machine of the present invention.

[0024] Figure 2 is the right view of the crayfish manual shell-breaking machine of the present invention.

[0025] Figure 3 is the isometric view A of the crayfish manual shell-breaking machine of the present invention.

[0026] Figure 4 Isometric view B of the crayfish manual shell-breaking machine of the invention.

[0027] Figure 5 Front view of the upper pressing die of the crayfish manual shell-breaking machine of the present invention.

[0028] Figure 6 Marking diagram of the rotating shaft of the upper pressing die of the crayfish manual shell-breaking machine of the invention.

[0029] Figure 7 Isometric view of the upper pressing die of the crayfish manual shell-breaking machine of the invention.

[0030] Figure 8 Isometric view of the upper pressing die and the baffle of the crayfish manual shell-breaking machine of the invention.

[0031] Figure 9 is the front view of the shell-breaking platform of the crayfish manual shell-breaking machine of the present invention.

[0032] Figure 10 is the top view of the shell-breaking platform of the crayfish manual shell-breaking machine of the present invention.

[0033] Figure 11 is the isometric view of the shell-breaking platform of the crayfish manual shell-breaking machine of the present invention.

[0034] Figure 12 It is the bottom view of the shell-breaking platform of the crayfish manual shell-breaking machine of the present invention.

[0035] Figure 13 It is the sectional view of the shell-breaking platform of the crayfish manual shell-breaking machine of the present invention.

[0036] Figure 14 It is the front view of the shell-breaking guillotine of the crayfish manual shell-breaking machine of the present invention.

[0037] Figure 15 It is the axonometric view of the shell-breaking guillotine of the crayfish manual shell-breaking machine of the present invention.

[0038] Figure 16 It is the front view of the shell-breaking blade mounting mold of the crayfish manual shell-breaking machine of the present invention.

[0039] Figure 17 It is the top view of the shell-breaking blade mounting mold of the crayfish manual shell-breaking machine of the present invention.

[0040] Figure 18 It is the front view of the shell-breaking blade of the crayfish manual shell-breaking machine of the present invention.

[0041] Figure 19 It is the right view of the shell-breaking blade of the crayfish manual shell-breaking machine of the present invention.

[0042] Figure 20 It is the front view of the blade pressing plate of the crayfish manual shell-breaking machine of the present invention.

[0043] Figure 21 It is the axonometric view of the blade pressing plate of the crayfish manual shell-breaking machine of the present invention.

[0044] Figure 22 It is the front view of the rotating shaft box of the crayfish manual shell-breaking machine of the present invention.

[0045] Figure 23 It is the bottom view of the rotating shaft box of the crayfish manual shell-breaking machine of the present invention.

[0046] Figure 24 It is the axonometric view of the rotating shaft box of the crayfish manual shell-breaking machine of the present invention.

[0047] Figure 25 It is the axonometric view of the return spring of the crayfish manual shell-breaking machine of the present invention.

[0048] Figure 26 It is the front view of the base of the crayfish manual shell-breaking machine of the present invention.

[0049] Figure 27 It is the right view of the base of the crayfish manual shell-breaking machine of the present invention.

[0050] Figure 28 It is a top view of the base of the manual crayfish shelling machine of the present invention.

[0051] Figure 29 It is an axonometric view of the base of the manual crayfish shelling machine of the present invention.

[0052] Figure 30 It is a bottom view of the base of the manual crayfish shelling machine of the present invention.

[0053] Figure 31 It is a front view of the tray of the manual crayfish shelling machine of the present invention.

[0054] Figure 32 It is an axonometric view of the base of the manual crayfish shelling machine of the present invention.

[0055] Figure 33 It is an axonometric view of the safety belt of the manual crayfish shelling machine of the present invention.

[0056] Figure 34 It is an axonometric view of the shrimp tails produced by the manual crayfish shelling machine of the present invention. Detailed implementation manners

[0057] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are some but not all of the embodiments of the present invention. Usually, the components of the embodiments of the present invention described and illustrated herein can be arranged and designed in various different configurations.

[0058] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed present invention, but merely represents selected embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts fall within the scope of protection of the present invention.

[0059] As Figures 1 - 33 shown, the manual crayfish shelling machine of the present invention includes a base 9. The base 9 is used to provide support for some other components of the manual crayfish shelling machine.

[0060] The upper pressing die 1, the shelling platform 2, the shelling guillotine assembly 3, and the rotating shaft box 7 are installed on the base 9.

[0061] Among them, the upper pressing die 1 and the shell-breaking guillotine component 3 are installed on the rotating shaft box 7 and can rotate relative to the rotating shaft box 7. And, the upper pressing die 1 is located above the shell-breaking platform 2. The shell-breaking guillotine component 3 is located below the shell-breaking platform 2 and the shell-breaking blade 5 of the shell-breaking guillotine component 3 passes through the shell-breaking platform 2 and extends upward. The crayfish to be shelled is placed on the shell-breaking platform 2 and the shell is broken under the cooperation of the upper pressing die 1 and the shell-breaking guillotine component 3.

[0062] A first rotating shaft 110 is provided on the upper pressing die 1. And, a first shaft hole 71 for the first rotating shaft 110 to pass through is provided on the rotating shaft box 7. Thus, the upper pressing die 1 can move with the rotating shaft box 7 as a fulcrum to complete the action of pressing the processed crayfish.

[0063] Preferably, a threaded hole 140 may be provided at the end of the first rotating shaft 110. Thus, the first rotating shaft 110 can be positioned on the rotating shaft box 7 through a first baffle 103 and a fixing screw. In this way, it can prevent the upper pressing die 1 from falling off the rotating shaft box 7.

[0064] The shell-breaking guillotine component 3 includes a blade mounting die 4, a shell-breaking blade 5 and a blade pressing plate 6. The shell-breaking blade 5 is mounted on the blade mounting die 4 through the blade pressing plate 6.

[0065] Preferably, a groove for accommodating the shell-breaking blade 5 is provided on the blade mounting die 4. Thus, the shell-breaking blade 5 can be better mounted into the blade mounting die 4.

[0066] Two mounting holes 61 are provided on the blade pressing plate 6. Thus, by means of two bolts passing through the mounting holes 61, the blade pressing plate 6 can press and position the shell-breaking blade 5 on the blade mounting die 4. Thus, when replacing the shell-breaking blade 5, loosen the two bolts on the blade pressing plate 6 and gently shake the shell-breaking blade 5, and the shell-breaking blade 5 can be taken out. Align the new shell-breaking blade 5 and insert it into the groove on the blade mounting die 4, and tighten the bolts on the blade pressing plate 6, so that the replacement of the shell-breaking blade 5 is more convenient.

[0067] Preferably, a second rotating shaft 41 is provided on the blade mounting die 4. And, a second shaft hole 72 for the second rotating shaft 41 to pass through is provided on the rotating shaft box 7. Thus, it is convenient to mount the blade mounting die 4 on the rotating shaft box 7, and moreover, the blade mounting die 4 can move with the rotating shaft box 7 as a fulcrum to complete the action of breaking the abdomen of the processed crayfish.

[0068] Preferably, a threaded hole may be provided at the end of the second rotating shaft 41. Thus, the second rotating shaft 41 can be positioned on the rotating shaft box 7 through the second baffle 104 and fixing screws. In this way, it is possible to prevent the blade mounting die 4 from falling off the rotating shaft box 7.

[0069] A knife slot 21 for the shell-breaking blade 5 to pass through is provided on the shell-breaking platform 2, and a groove 22 for receiving the edges of the abdominal shell of the crayfish is provided on each side of the knife slot 21. The shape of the groove 22 is similar to the shape of the edges of the abdominal shell of the crayfish. Thus, after the crayfish is placed on the shell-breaking platform 2, the two edges of the abdominal shell of the crayfish are respectively located in one of the grooves 22, so as to facilitate the fixation of the crayfish, and further make the crayfish not easy to move during the shell-breaking process, so as to better achieve shell-breaking.

[0070] In the present invention, preferably, a return spring 8 is provided between the upper pressing die 1 and the shell-breaking guillotine assembly 3. Thus, after shell-breaking one crayfish, when the upper pressing die 1 is released, under the action of the return spring 8, the upper pressing die 1 can return upward to facilitate the placement of a new crayfish.

[0071] Preferably, a first connecting portion 13 is provided on the lower surface of the upper pressing die, and a second connecting portion 42 is provided on the upper surface of the blade mounting die 4. The upper end of the return spring 8 is connected to the first connecting portion 13, and the lower end is connected to the second connecting portion 42. Thus, it is convenient for the installation of the return spring 8.

[0072] More preferably, a crayfish back pressing portion 12 is further provided on the lower surface of the upper pressing die 1. Thus, during shell-breaking, the crayfish back pressing portion 12 and the groove 22 together can better fix the crayfish to prevent it from moving, so as to better achieve shell-breaking.

[0073] In addition, in the present invention, the crayfish manual shell-breaking machine further includes a tray 10. The base 9 is placed in the tray 10 so that the tray 10 can receive the dirt flowing out of the crayfish body during shell-breaking, thereby ensuring cleanliness and hygiene.

[0074] A limiting block 101 for restricting the movement of the base 9 is provided in the tray 10. Thus, the base 9 can be more stably restricted in the tray 10 to prevent it from moving.

[0075] In addition, safety belts 11 are provided on the upper pressing die 1 and the base 9. As Figure 3 and 4 shown, when the search book safety belt 11 is moved to the right position, it restricts the downward movement of the upper pressing die 1 and fits on the search book shell-breaking platform to prevent children from accidentally hurting their fingers while playing, and at the same time it is also convenient for storage, packaging and transportation.

[0076] The manual crayfish shell-breaking machine of the present invention can process fresh crayfish, and its processing method is as follows:

[0077] 1. Cleaning.

[0078] Before processing, use instruments such as a toothbrush or a cleaning machine to clean the crayfish thoroughly. When operating, anti-cutting gloves should be worn.

[0079] 2. Pulling out the shrimp intestine.

[0080] Hold the shrimp head with the right hand and pinch the tail of the shrimp with the left hand, and place the shrimp on the shell-breaking platform 2. The anus at the tail end of the shrimp should be at the left end of the shell-breaking platform and protrude about two millimeters. Keep the left hand in the original position without moving, release the shrimp head with the right hand, and press down the upper pressing die 1; press the shrimp tightly on the shell-breaking platform 2. At this time, attention should be paid to the pressing force. Being too tight or too loose is not appropriate. Being too tight will damage the muscles of the crayfish, and being too loose will make it difficult to break off the shrimp tail.

[0081] After the crayfish is pressed tightly on the shell-breaking platform 2, hold the carapace at the tail of the crayfish with the left hand and rotate it about 60 degrees clockwise and counterclockwise, then pinch the anus of the crayfish tightly and pull out the shrimp intestine. When pulling out the shrimp intestine, the upper pressing die 1 should not be pressed too tightly to prevent affecting the extraction of the shrimp intestine.

[0082] 3. Removing the head.

[0083] After pulling out the shrimp intestine, use the left hand to press the upper pressing die 1 instead of the right hand, and hold the connection between the shrimp head and the abdomen with the right hand, and pull the shrimp head to the right. At this time, the pinching force should be controlled; if the pinching force is too large, the head of the crayfish may be deformed too much and the head muscles may be torn off together with the gills. In the traditional method of forcibly tearing off the shrimp head without cutting the head muscles of the crayfish, most of the head muscles are torn off together with the head, resulting in waste. If the pressing force of the upper pressing die 1 is too small, the crayfish will be pulled out from the upper pressing die. Generally, the force can be mastered after 4 to 5 experiments.

[0084] 4. Cutting the carapace.

[0085] Discard the pulled-out crayfish head into the trash can. Hold the shell-breaking guillotine assembly 3 with the right hand and lift it up. The blade 5 installed on the shell-breaking guillotine assembly 3 cuts into the crayfish from below the abdomen. When a slight "click" sound is heard, it means that the shell-breaking blade 5 has cut through most of the dorsal shell and all of the abdominal soft shell at the tail of the crayfish. Release the guillotine handle, and the guillotine handle returns to its original position, and the shell-breaking blade withdraws from the tail of the crayfish. Release the left hand, and the upper pressing die 1 resets under the action of the spring 8. Check whether there is an intestine that has not been pulled out from the abdominal incision of the crayfish. If so, a tool such as a toothpick can be used to pick out the intestine. (This situation is very rare. If it occurs, it is also caused by reasons such as unskilled operation during tail-breaking and intestine-pulling and seasonal climate.)

[0086] The shape of the crayfish tail obtained by using the processing method of the present invention is asFigure 34 As shown in the figure, where 201 is the breaking line of the crayfish tail and 202 is the head muscle of the crayfish. Compared with the shape of the crayfish tail obtained by the traditional processing method (see Figure 13 ), the processing method of the present invention retains the head muscle and can increase the meat yield of crayfish by about 12%.

[0087] The manual shell-breaking machine for crayfish of the present invention can achieve shell-breaking of crayfish, so as to quickly obtain shrimp meat, and solves the shell-breaking problem in the production of crayfish food and for household and restaurant consumption. Moreover, the manual shell-breaking machine for crayfish of the present invention has a simple structure, is convenient to operate, has a low cost, and is convenient for popularization and application.

[0088] The above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the implementation manners of the present invention. For those of ordinary skill in the art, other different forms of changes or modifications can be made on the basis of the above description. It is impossible to list all the implementation manners here. Any obvious changes or modifications derived from the technical solutions of the present invention still fall within the protection scope of the present invention.

Claims

1. A manual crayfish shell-breaking machine, which comprises a base (9), and is characterized in that, An upper pressing die (1), a shell-breaking platform (2), a shell-breaking cutter assembly (3) and a rotating shaft box (7) are installed on the base (9). The upper pressing die (1) and the shell-breaking cutter assembly (3) are installed on the rotating shaft box (7) and can rotate relative to the rotating shaft box (7). The upper pressing die (1) is located above the shell-breaking platform (2), and the shell-breaking cutter assembly (3) is located below the shell-breaking platform (2), and the shell-breaking blades (5) of the shell-breaking cutter assembly (3) pass through the shell-breaking platform (2) and extend upward. The crayfish to be shelled is placed on the shell-breaking platform (2) and the shell is broken under the cooperation of the upper pressing die (1) and the shell-breaking cutter assembly (3). Safety belts (11) are provided on the upper pressing die (1) and the base (9).

2. The crayfish manual shell-breaking machine according to claim 1, wherein The shell-breaking cutter assembly (3) includes a blade mounting die (4), shell-breaking blades (5) and a blade pressing plate (6). The shell-breaking blades (5) are installed on the blade mounting die (4) through the blade pressing plate (6).

3. The crayfish manual shell-breaking machine according to claim 2, wherein, The blade mounting die (4) is provided with a groove for accommodating the shell-breaking blades (5).

4. The manual crayfish shell-breaking machine according to claim 3, wherein Two mounting holes (61) are provided on the blade pressing plate (6). By means of two bolts passing through the mounting holes (61), the blade pressing plate (6) presses and positions the shell-breaking blades (5) on the blade mounting die (4).

5. The manual crayfish shell-breaking machine according to claim 4, wherein, The shell-breaking platform (2) is provided with a knife slot (21) for the shell-breaking blades (5) to pass through, and grooves (22) for receiving the edges of the abdominal shells of the crayfish are respectively provided on both sides of the knife slot (21).

6. The manual crayfish shell-breaking machine according to claim 5, characterized in that, A first rotating shaft (110) is provided on the upper pressing die (1), a second rotating shaft (41) is provided on the blade mounting die (4), and a first shaft hole (71) for the first rotating shaft (110) to pass through and a second shaft hole (72) for the second rotating shaft (41) to pass through are provided on the rotating shaft box (7).

7. The crayfish manual shell-breaking machine according to claim 6, wherein, A return spring (8) is provided between the upper pressing die (1) and the shell-breaking cutter assembly (3).

8. The manual crayfish shell-breaking machine according to claim 7, characterized in that, A first connecting portion (130) and a crayfish back pressing portion (120) are provided on the lower surface of the upper pressing die (1). A second connecting portion (42) is provided on the upper surface of the blade mounting die (4). The upper end of the return spring (8) is connected to the first connecting portion (130), and the lower end is connected to the second connecting portion (42).

9. The crayfish manual shell-breaking machine according to any one of claims 1-8, characterized in that, Further included is a tray (10). The base (9) is placed in the tray (10) so that the tray (10) can receive the dirt flowing out of the crayfish body during shell-breaking.

10. The crayfish manual shell-breaking machine according to claim 9, characterized in that, A limiting block (101) for restricting the movement of the base (9) is provided in the tray (10).

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