A sword for killing eels
By designing an inclined semi-circular groove and a thin cleaning blade structure for the eel slaughtering knife, the problem of removing eel bones has been solved, achieving efficient and safe bone separation and organ cleaning, making it suitable for operators with insufficient experience.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- JIANGSU FOOD & PHARMA SCI COLLEGE
- Filing Date
- 2025-09-09
- Publication Date
- 2026-07-24
AI Technical Summary
Eel bones are difficult to separate efficiently and are prone to breakage during the removal process, making the operation quite challenging, especially for kitchen novices with insufficient experience, and the removal efficiency is low.
Design an eel butchering knife with an inclined semi-circular groove on the blade for removing bones. Combined with a guide area and a pre-pull-out area, it avoids bone breakage. The knife also cleans the visceral membranes simultaneously with a cleaning blade and collects residue in a collection area.
It achieves efficient separation of eel bones, avoids breakage, simplifies the operation process, improves deboning efficiency, and simultaneously cleans internal organs, reducing the difficulty of operation.
Smart Images

Figure CN224539337U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of eel slaughtering knives, specifically an eel slaughtering knife. Background Technology
[0002] Eels are a common type of fish in our lives. Their meat is tender and delicious, and they are often used as an ingredient in our cooking. Eels have a smooth body surface and only one central vertebra. When processing eels, the central vertebra can be selectively removed. Eel bones are rich in calcium and trace elements, and keeping the bones can increase the nutritional value of the dish. However, in order to avoid choking when eating, some people will remove the eel bones when processing eels. Eels are a common household dish, and people usually use knives to prepare them. In the process, the user places the eel on a cutting board and uses the tip of the knife to cut open the eel's abdomen, exposing the internal organs and bones. The internal organs are dealt with first, and then the bones are removed. Because the eel bones are embedded in the meat, removing them requires a certain level of skill. Therefore, for some kitchen novices with insufficient experience, deboning eels is relatively difficult. Inexperienced operators are often inefficient in deboning and are prone to breaking the eel's spine during the process. Therefore, we propose a new eel-killing knife. Utility Model Content
[0003] The purpose of this invention is to provide an eel-killing knife to solve the problems mentioned in the background art.
[0004] To achieve the above objectives, this utility model provides the following technical solution: It includes a knife body and a handle. The knife body includes a tip area and a tail area. The tip area is used to cut open the abdomen of the eel. A semi-circular groove is provided on the tail area, and the semi-circular groove is designed in an inclined shape in the tail area. The semi-circular groove is used to remove the eel bones. After cutting open the eel's abdomen, the semi-circular groove penetrates into the meat corresponding to the eel bones, and the tail area fits against the eel meat. The knife body is pushed along the direction of the eel bones, and the eel bones contact the surface of the tail area along the inclined semi-circular groove.
[0005] Preferably, the thickness of the tail region is greater than the thickness of the tip region, and the intersection is designed to be inclined.
[0006] Preferably, the semicircular groove includes a guide area intersecting with the surface of the blade tail area and a pre-pull-out area that contacts the eel bone. During the process of removing the eel bone, the eel bone is inclined when passing through the pre-pull-out area, so that the eel bone close to the pre-pull-out area is lifted up.
[0007] Preferably, the tilt angle α of the pre-pull-out area is less than the tilt angle γ of the guide area.
[0008] Preferably, a cleaning sheet is installed on the side of the blade tail area that contacts the eel meat, and the sidewall of the cleaning sheet has a collection area with a wave-like design.
[0009] Preferably, the collection area is designed in an inclined shape, and the remaining viscera membrane inside the eel's abdomen is cleaned into thin sheets and accumulated in the collection area.
[0010] Compared with the prior art, the beneficial effects of this utility model are: This invention utilizes a semi-circular groove to remove eel bones. The semi-circular groove has a certain curvature to fit the eel bones and prevent the blade from slipping. The guide area and pre-pull-out area effectively separate the bones from the eel meat, making it easy to lift the eel bones near the semi-circular groove without breaking them. The guide area allows the eel bones to adhere to the surface of the blade tail area, resulting in a unified eel bone structure after removal. At the same time, the cleaning blade effectively cleans the film after the organs have been processed, and the collection area collects any remaining organ film, allowing the operator to clean the organs at the eel tail end uniformly. Attached Figure Description
[0011] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a schematic diagram of the structure of the blade of this utility model penetrating into the abdomen of an eel; Figure 3 This is a schematic diagram of the structure of the blade of this utility model for removing eel bones; Figure 4 This is a schematic diagram of the blade body and handle structure of this utility model; Figure 5 This is a schematic diagram of the semi-circular groove structure of this utility model; Figure 6 This is a schematic diagram of the guiding area and pre-pull-out area of this utility model; Figure 7 This is a schematic diagram of the cleaning sheet structure of this utility model.
[0012] In the diagram: 1. Blade body; 2. Handle; 3. Blade tip area; 4. Blade tail area; 41. Semicircular groove; 411. Guide area; 412. Pre-pull-out area; 5. Cleaning flakes; 51. Collection area. Detailed Implementation
[0013] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0014] Please see Figure 1-7 This utility model provides a technical solution: an eel slaughtering knife, combined with an attached... Figure 1 As shown, it includes a knife body 1 and a handle 2. The knife body 1 includes a tip area 3 and a tail area 4, wherein the tip area 3 is used to cut open the abdomen of the eel, combined with the attached... Figure 2 As shown, during the processing of eel, the tip area 3 of the knife 1 is inserted into the eel's abdomen. The operator then holds the eel down with their other hand and uses the tip area 3 to open the abdomen, exposing the internal organs and bones. The operator then lays the eel flat with its belly facing upwards. The tail area 4 of the knife has a semi-circular groove 41 for removing the eel bones. This semi-circular groove 41 is angled on the tail area 4. During the specific operation, the operator inserts the semi-circular groove 41 into the meat corresponding to the eel bones. At this point, the tail area 4 is in contact with the flattened eel meat, while the tip area 3... Figure 3 As shown, the blade does not come into contact with the eel meat, but the semi-circular groove 41 comes into contact with the eel bone. Then, the blade 1 is pushed along the direction of the eel bone, so that the semi-circular groove 41 can debone the eel bone. Furthermore, in conjunction with the appendix Figure 4 As shown, in this utility model, the thickness of the tail region 4 is greater than the thickness of the tip region 3, and the intersection is designed with an inclined shape, combined with the attached... Figure 6 As shown, the semicircular groove 41 includes a guide area 411 intersecting with the surface of the blade tail area 4 and a pre-pull-out area 412 in contact with the eel bone. During the process of removing the eel bone, the eel bone is inclined when passing through the pre-pull-out area 412, so that the eel bone close to the pre-pull-out area 412 is lifted up. To further explain, taking the plane where the eel meat is located as the reference plane, the inclination angle α of the pre-pull-out area 412 is smaller than the inclination angle γ of the guide area 411. Thus, the pre-pull-out area 412 is relatively gentle, so that the eel bone close to the semicircular groove 41 is easy to be lifted up and will not break. The guide area 411 makes the eel bone stick to the surface of the blade tail area 4, so that the removed eel bone is in one piece.
[0015] To reduce the processing steps for eels, this invention simultaneously processes the internal organs while removing the bones, combined with the attached... Figure 5 and attached Figure 7As shown, a cleaning sheet 5 is installed on the side of the knife tail area 4 that is in contact with the eel meat, and the side wall of the cleaning sheet 5 is provided with a collection area 51 with a wave-like design. The collection area 51 is designed in an inclined shape. The remaining viscera membrane inside the eel's abdomen is processed by the cleaning sheet 5 and accumulates in the collection area 51.
[0016] Specifically, in practical application, the operator fixes the eel, then uses the tip area 3 of the knife 1 to cut open the eel's abdomen, exposing the internal organs and bones. The eel with its abdomen cut open is then placed flat on a board with its belly facing upwards, as shown in the attached image. Figure 2 As shown, the semi-circular groove 41 on the tail area 4 corresponds to the eel bone. During this process, the blade 1 is tilted so that the blade of the tail area 4 is aligned with the internal organs. That is, the cleaning slice 5 cleans the area after the internal organs have been processed as it moves with the tail area 4. Then, the semi-circular groove 41 penetrates into the meat corresponding to the eel bone. At this time, the semi-circular groove 41 contacts the eel bone, and the blade of the tail area 4 can scrape off the internal organs inside the eel's abdomen. The cleaning slice 5, as it moves with the tail area 4, cleans the remaining membrane of the internal organs inside the eel's abdomen. The process involves cleaning the eel, and any remaining visceral membranes accumulate in the wavy collection area 51. When the operator pushes the blade 1, the semi-circular groove 41 removes the eel bones. The pre-pull-out area 412 and the guide area 411 prevent the eel bones from breaking during the removal process. At the same time, the blade at the tail of the blade 4 cleans the viscera inside the eel's abdomen, and the cleaning blade 5 scrapes away any remaining visceral membranes, which accumulate in the wavy collection area 51, making it easier for the operator to clean the viscera at the tail end of the eel.
[0017] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.
[0018] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.
Claims
1. A knife for butchering eels, characterized in that, The knife includes a blade (1) and a handle (2). The blade (1) includes a tip area (3) and a tail area (4). The tip area (3) is used to cut open the abdomen of the eel. The tail area (4) has a semi-circular groove (41) and the semi-circular groove (41) is designed to be inclined in the tail area (4). The semi-circular groove (41) is used to remove the eel bones. After cutting open the abdomen of the eel, the semi-circular groove (41) penetrates into the meat corresponding to the eel bones. The tail area (4) fits against the eel meat and pushes the blade (1) along the direction of the eel bones. The eel bones contact the surface of the tail area (4) along the semi-circular groove (41) designed to be inclined.
2. The eel-slaughtering knife according to claim 1, characterized in that: The thickness of the tail region (4) is greater than the thickness of the tip region (3), and the intersection is designed to be inclined.
3. The eel-slaughtering knife according to claim 2, characterized in that: The semicircular groove (41) includes a guide area (411) that intersects with the surface of the blade tail area (4) and a pre-pull-out area (412) that contacts the eel bone. During the process of removing the eel bone, the eel bone is tilted when it passes through the pre-pull-out area (412), so that the eel bone close to the pre-pull-out area (412) is lifted up.
4. The eel-slaughtering knife according to claim 3, characterized in that: The tilt angle α of the pre-pull-out area (412) is less than the tilt angle γ of the guide area (411).
5. A knife for slaughtering eels according to any one of claims 1-4, characterized in that: The side of the blade tail area (4) that comes into contact with the eel meat is equipped with a cleaning sheet (5), and the side wall of the cleaning sheet (5) is provided with a collection area (51) with a wave-like design.
6. The eel-slaughtering knife according to claim 5, characterized in that: The collection area (51) is designed in an inclined shape, and the remaining viscera membrane inside the eel's abdomen is treated by cleaning sheets (5) and accumulated in the collection area (51).