A hand meat mincer

Abstract

The utility model discloses a kind of manual meat grinder, the utility model relates to meat processing technical field, scheme includes: a kind of manual meat grinder, including: meat grinding cylinder, the top of meat grinding cylinder is equipped with material inlet, and one end of meat grinding cylinder is equipped with material outlet;Meat outlet end cover, meat outlet end cover is detachably installed in material outlet, meat outlet end cover is equipped with multiple discharge through holes, and one end of meat outlet end cover towards meat grinding cylinder is equipped with multiple containing grooves along circumferential direction;Multiple supporting shaft rods, multiple supporting shaft rods are installed in the outer wall of material outlet along circumferential direction, and multiple supporting shaft rods can be embedded in corresponding containing groove respectively;The convenience of dismounting operation can be enhanced, component wear risk is reduced, equipment service life is prolonged, and user operation experience is simultaneously optimized.

Description

Technical Field

[0001] This utility model relates to the field of meat processing technology, specifically to a manual meat grinder. Background Technology

[0002] Meat grinders are specialized equipment used for processing meat raw materials, widely used in home kitchens, catering establishments, and food processing scenarios to meet diverse meat preparation needs. Their core function is to achieve efficient and fine processing of meat. Manual meat grinders, as the traditional form of meat grinding equipment, rely on a human-powered transmission structure to complete the operation. Compared to electric motor models, manual meat grinders, while having lower processing efficiency, are compact in structure, highly controllable in operation, and easy to maintain, making them suitable for small-scale, intermittent meat processing scenarios.

[0003] According to the authorization announcement number (CN209438758U), a split-type manual stainless steel meat grinder consists of a head and a base. The head houses a meat grinding mechanism, with a meat discharge device mounted at the front and a hand crank at the rear to drive its operation. Operation: The operator holds the handle and rotates the hand crank, which, through the transmission system, drives the main shaft to rotate. Meat chunks are axially pushed by the grinding auger to the mincing blades. After being sheared and pulverized by the blades, the minced meat is extruded through the discharge holes of the discharge plate under the continuous thrust of the grinding auger.

[0004] The structure disclosed in this patent has defects in practical applications, specifically as follows: The working spindle relies on the fixed structures at both ends, but if the meat dispensing device is disassembled, the front end constraint of the working spindle disappears, and the working spindle is supported only by the rear end bushing at a single point, forming a cantilever beam structure. It is prone to radial micro-shaking due to its own weight or external forces. However, precisely to ensure the stability of the meat grinder, the center hole of the meat dispensing plate and the front end of the working spindle are fitted with a near-zero clearance, which makes it difficult to align the center hole of the meat dispensing plate with the front end of the spindle during reassembly. Repeated adjustments are required, and forced fitting may even cause wear of components or deformation of the working spindle. Long-term use will aggravate the loss of fitting accuracy, affecting the life of the equipment and the user experience. Utility Model Content

[0005] The purpose of this utility model is to provide a manual meat grinder that addresses the problem in the prior art where radial micro-wobbling easily occurs after the constraint at the front end of the working spindle is released during disassembly and assembly, significantly increasing the difficulty of aligning the meat discharge device with the working spindle. This proposed solution enhances the convenience of disassembly and assembly, reduces the risk of component wear, extends the service life of the equipment, and optimizes the user's operating experience.

[0006] This utility model is achieved through the following technical solution:

[0007] A manual meat grinder includes: a grinding cylinder with a material inlet at its top and a material outlet at one end; a meat outlet cover detachably mounted on the material outlet, having multiple discharge holes and multiple accommodating grooves along its circumferential direction at the end of the meat outlet facing the grinding cylinder; multiple supporting shafts mounted circumferentially on the outer wall of the material outlet, each capable of being embedded in a corresponding accommodating groove; a supporting bushing installed between the multiple supporting shafts; a drive shaft passing through the interior of the grinding cylinder, one end of which passes through the inner side of the supporting bushing, and the other end extending to the exterior of the grinding cylinder; and spiral blades mounted on the outer wall of the drive shaft, arranged along the extension direction of the drive shaft.

[0008] Furthermore, in this utility model, the end of the meat outlet cap facing the meat grinder cylinder is provided with a bushing groove, which is adapted to the outer contour of the support bushing; the support bushing can be at least partially embedded in the bushing groove, thereby reducing the space occupied by the support bushing in the meat grinder cylinder.

[0009] Furthermore, in this utility model, a screw-fit sleeve with a circular structure is rotatably assembled at the edge of the meat outlet end cap; the screw-fit sleeve can rotate along the circumference of the meat outlet end cap, and the inner wall of the screw-fit sleeve is threadedly engaged with the outer wall of the meat grinder cylinder.

[0010] Furthermore, in this utility model, a connecting groove is provided at the edge of the meat outlet end cap along the circumferential direction, and a guide boss is provided on the side wall of the connecting groove along the circumferential direction; one end of the screw-on sleeve is embedded in the connecting groove, and a guide groove is provided on the side wall of the screw-on sleeve along the circumferential direction, and the guide groove and the guide boss slide and guide each other in a sliding guide engagement.

[0011] Furthermore, in this utility model, the material inlet is equipped with a feeding cavity, and the material inlet is connected to the feeding cavity; the feeding cavity has a funnel-shaped hollow structure, and the feeding cavity can guide the material from the material inlet into the meat grinder cylinder.

[0012] Furthermore, in this utility model, a support arm is installed at the bottom end of the above-mentioned meat grinder cylinder. The support arm has a locking component and a docking seat. A locking area is formed between the locking component and the docking seat. The locking area is used to achieve a detachable connection with the external support structure.

[0013] Furthermore, in this utility model, the above-mentioned engaging assembly includes: a drive bracket, which is mounted on the support arm; an adjusting screw, which passes through the drive bracket and extends one end into the engaging area, and the adjusting screw and the drive bracket are threaded together; and a locking pad, which is disposed inside the engaging area and connected to the adjusting screw, and the locking pad can abut against or release the external support structure.

[0014] Compared with the prior art, this utility model has the following advantages and beneficial effects:

[0015] 1. In this application, the support bushing is installed at the material outlet, and the transmission shaft passes through the inside of the support bushing to form an independent support system. The support bushing and the meat grinder cylinder form a double-support positioning structure, which eliminates the problem of transmission shaft shaking caused by the traditional cantilever beam structure from the mechanism, and effectively avoids the positioning difficulties caused by transmission shaft shaking. It is especially suitable for household meat grinder scenarios that require frequent disassembly and cleaning.

[0016] 2. The fitting design of the bushing groove and the support bushing in this application creates a space avoidance structure. The support bushing is embedded in the bushing groove to reduce the area inside the meat grinder, so that the spiral blade can extend to the area near the meat outlet end cap. This eliminates the shearing blind zone from a mechanism perspective, achieves full coverage of the shearing area inside the meat grinder, and effectively avoids the accumulation and blockage of insufficiently sheared meat. It is especially suitable for continuous grinding of high-viscosity meat. Attached Figure Description

[0017] The accompanying drawings, which are included to provide a further understanding of the embodiments of the present invention and form part of this application, do not constitute a limitation thereof. In the drawings:

[0018] Figure 1 This is a schematic diagram of a manual meat grinder;

[0019] Figure 2 A schematic diagram of the internal structure of a meat grinder cylinder;

[0020] Figure 3 This is a schematic diagram of the connection and engagement of the meat outlet end cap with the screw-on sleeve.

[0021] Figure 4 This is a cross-sectional view of the screw-on sleeve connecting the meat outlet end cap.

[0022] The attached diagram shows the markings and corresponding component names:

[0023] 1-Meat grinder body, 2-Meat outlet cap, 3-Material outlet, 4-Material inlet, 5-Feeding chamber, 6-Screw-in sleeve, 7-Discharge through hole, 8-Support arm, 9-Connecting bracket, 10-Drive bracket, 11-Adjusting screw, 12-Locking pad, 13-Transmission shaft, 14-Helical blade, 15-Supporting shaft, 16-Supporting bushing, 17-Accommodation groove, 18-Bushing groove, 19-Connecting slot, 20-Guide boss, 21-Guide slide. Detailed Implementation

[0024] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the embodiments and accompanying drawings. The illustrative embodiments and descriptions of this utility model are only used to explain this utility model and are not intended to limit this utility model.

[0025] Example

[0026] Please refer to Figures 1 to 3 This utility model provides a manual meat grinder. It includes a meat grinder cylinder 1, a meat outlet cap 2, multiple supporting shafts, a support bushing, a transmission shaft, and spiral blades. The meat grinder cylinder 1 has a material inlet 4 at its top and a material outlet 3 at one end. A meat outlet cap 2 is detachably mounted on the material outlet 3. The meat outlet cap 2 has multiple discharge holes 7, and multiple receiving grooves are formed along the circumference at the end of the meat outlet cap 2 facing the meat grinder cylinder 1. Multiple supporting shafts are installed along the circumference on the outer wall of the material outlet 3, and each supporting shaft can be embedded into its corresponding receiving groove. A support bushing is installed between the multiple supporting shafts. A transmission shaft passes through the inside of the meat grinder cylinder 1, with one end passing through the inner side of the support bushing and the other end extending to the outside of the meat grinder cylinder 1. The transmission shaft and the through-hole portion of the meat grinder cylinder 1, as well as the inner side of the support bushing, form a rotational fit. Spiral blades are fixed to the outer wall of the transmission shaft and are arranged along the extension direction of the transmission shaft.

[0027] When performing meat grinding operations, the operator must first assemble the meat outlet cap 2 onto the material outlet 3 of the meat grinder cylinder 1. During assembly, multiple receiving grooves must correspond one-to-one with multiple supporting shafts, ensuring that each supporting shaft is embedded in its corresponding receiving groove. This avoids interference with the inner cavity of the meat grinder cylinder 1 and ensures smooth meat conveying. The support bushing is coaxial with the meat grinder cylinder 1, and the transmission shaft is also coaxial with the meat grinder cylinder 1. Therefore, when the operator rotates the external transmission shaft of the meat grinder cylinder 1, the transmission shaft can achieve stable transmission through rotation, thereby driving the spiral blades to rotate synchronously, completing the shearing and conveying of the meat. While the meat is being sheared inside the meat grinder cylinder 1, it will be continuously conveyed towards the meat outlet cap 2 and finally discharged through the discharge hole 7. When it is necessary to clean the inside of the meat grinder cylinder 1 or replace the meat outlet cap 2 with a different discharge hole 7 diameter, the operator can disassemble and reassemble the meat outlet cap 2. Since the meat outlet cap 2 does not bear the load of the transmission shaft, it is convenient to disassemble and reassemble.

[0028] The drive shaft is fitted with suitable bearings at both the point where it penetrates the meat grinder cylinder 1 and at the point where it passes through the inner side of the support bushing. The inner ring of the bearing is interference-fitted with the outer wall of the drive shaft, while the outer ring is fixedly connected to the inner wall of the penetration part of the meat grinder cylinder 1 and the inner side wall of the support bushing, respectively, ensuring that the drive shaft can maintain smooth circumferential movement during the meat grinding operation. To prevent meat or external impurities inside the meat grinder cylinder 1 from leaking or intruding through the penetration part of the meat grinder cylinder 1 via the drive shaft, a mechanical seal is installed at the point where the drive shaft penetrates the meat grinder cylinder 1, thus forming a reliable sealing barrier.

[0029] For example, to ensure the cutting effect on the meat, a special cutting blade can be installed at the end of the transmission shaft. The cutting blade and the transmission shaft work together in a linked manner. When the transmission shaft drives the spiral blade to convey the meat, the special cutting blade can perform pre-cutting treatment on the meat that is about to enter the meat outlet cover 2, ensuring that the meat forms a more uniform particle size before passing through the discharge hole 7, thereby improving the stability and consistency of the overall meat grinding effect.

[0030] It should be noted that the multiple receiving grooves and multiple discharge holes 7 on the meat discharge end cap 2 are spatially staggered, meaning that the locations of the receiving grooves avoid the areas where the discharge holes 7 are located. This layout design avoids structural interference between the receiving grooves and the discharge holes 7, ensuring that the supporting shaft will not obstruct or block the discharge holes 7 after being embedded in the receiving grooves. At the same time, it ensures that the meat discharge end cap 2 can smoothly discharge meat through the discharge holes 7 while achieving stable assembly with the meat grinder cylinder 1, so that the assembly function and the discharge function do not interfere with each other, improving the rationality and practicality of the structural design.

[0031] Please refer to Figure 3 In some embodiments of this application, the end cap 2 facing the meat grinder cylinder 1 has a bushing groove, and the inner contour of the bushing groove is adapted to the outer contour of the supporting bushing. When the end cap 2 is assembled to the material outlet 3 of the meat grinder cylinder 1, the supporting bushing can achieve at least a partial structural fitting, and the bushing groove avoids the space of the supporting bushing, significantly reducing the radial occupancy of the supporting bushing in the meat grinder cylinder 1.

[0032] It should be noted that the fitting between the bushing groove and the support bushing eliminates the protrusion of the support bushing within the meat grinder cylinder 1, providing ample installation space for the axial extension of the spiral blades. Without this design, the radial protrusion of the support bushing would create a source of spatial interference, limiting the axial arrangement range of the spiral blades and preventing them from approaching the meat discharge end cap 2. This would create an axial shearing blind zone between the meat discharge end cap 2 and the support bushing. When meat is conveyed to this shearing blind zone, if the meat particle size does not meet the passage threshold of the discharge orifice 7 of the meat discharge end cap 2, the meat will become stuck, unable to be discharged and unable to continue shearing, leading to meat accumulation and blockage.

[0033] The fitting design of the bushing groove and the support bushing allows the axial extension boundary of the spiral blade to move closer to the meat outlet end cap 2, achieving full coverage of the shearing area inside the meat grinder cylinder 1. This ensures that all meat on the conveying path can be continuously sheared by the spiral blade, completely eliminating the blockage risk caused by the shearing blind zone from a structural perspective, while also ensuring the uniformity of the shearing particle size of the meat and the continuity of the discharge process.

[0034] Please refer to Figure 3 and Figure 4 In some embodiments of this application, a ring-shaped screw-in sleeve 6 is rotatably fitted at the edge of the meat outlet cap 2; the screw-in sleeve 6 can rotate freely circumferentially along the circumference of the meat outlet cap 2. During the assembly of the meat outlet cap 2 with the material outlet 3 of the meat grinder cylinder 1, a pre-positioning operation must first be completed: multiple receiving grooves and multiple supporting shafts are fitted in a one-to-one correspondence, ensuring that the supporting shafts are fully embedded in the corresponding receiving grooves, while the bushing groove and the supporting bushing are concentrically fitted. The receiving groove and the supporting shaft are circumferentially limited, and the bushing groove and the supporting bushing are radially positioned. The internal thread section of the screw-in sleeve 6 is initially aligned with the external thread section of the meat grinder cylinder 1. The operator can apply a circumferential torque to the screw-in sleeve 6 to make it spirally feed along the external thread section of the meat grinder cylinder 1, achieving rigid fixation of the meat outlet cap 2 on the meat grinder cylinder 1.

[0035] Please refer to Figure 4 Specifically, a connecting groove is provided at the edge of the meat outlet end cap 2 along the circumferential direction, and a guide boss is integrally formed on the inner side wall of the connecting groove along the circumferential direction; one end of the screw-on sleeve 6 is fitted into the connecting groove by an embedded method, and a guide groove is provided on the outer side wall of the screw-on sleeve 6 along the circumferential direction to match the guide boss, and the guide groove and the guide boss form a circumferential sliding guide fit.

[0036] The fitting of the guide boss and the guide groove restricts the axial movement of the screw sleeve 6 relative to the meat outlet end cap 2, and enables the screw sleeve 6 to rotate smoothly along the circumference of the meat outlet end cap 2. At the same time, it effectively prevents the screw sleeve 6 from radially shifting or separating from the meat outlet end cap 2 during rotation, providing reliable structural support for the threaded screwing operation between the screw sleeve 6 and the meat grinder cylinder 1.

[0037] In some embodiments of this application, a feeding chamber 5 is fixedly installed at the material inlet 4, and the material inlet 4 and the inner cavity of the feeding chamber 5 form a through connection; the feeding chamber 5 adopts a funnel-shaped hollow structure, with the large-diameter end of the feeding chamber 5 facing upward as the material receiving end, and the small-diameter end forming a sealed connection with the material inlet 4. The feeding chamber 5 can guide and constrain the input meat, causing the meat to slide directionally along the guide surface under the action of gravity, enter the material inlet 4, and be transported into the meat grinder cylinder 1.

[0038] Please refer to Figure 1 In some embodiments of this application, a support arm 8 is installed at the bottom end of the meat grinder cylinder 1. A docking seat 9 and a locking assembly are sequentially installed on the support arm 8 along its extending direction. The docking seat 9 and the locking assembly enclose a locking area for accommodating an external support structure. Through the coordinated constraint of the locking assembly and the docking seat 9, the locking area enables a detachable connection between the meat grinder and the external support structure, enhancing the flexibility of equipment use.

[0039] Specifically, the engaging assembly consists of a drive bracket 10, an adjusting screw 11, and a locking pad 12: the drive bracket 10 is mounted at a preset position on the support arm 8; the adjusting screw 11 runs through the drive bracket 10, and the adjusting screw 11 is threaded into the through hole wall of the drive bracket 10, with one end of the adjusting screw 11 extending into the engaging area; the locking pad 12 is disposed inside the engaging area, and the locking pad 12 is connected to the end of the adjusting screw 11 extending into the engaging area, and the locking pad 12 can achieve synchronous displacement with the axial feed of the adjusting screw 11.

[0040] During assembly, the operator adjusts the position of the locking pad 12 within the engagement area according to the specific dimensions of the external support structure: placing the external support structure within the engagement area forces the docking seat 9 to abut against the top of the external support structure. Then, the operator rotates the adjusting screw 11 to move the locking pad 12 closer to the bottom of the external support structure until the locking pad 12 and the docking seat 9 form opposing clamping forces, firmly clamping the external support structure within the engagement area. This achieves a rigid connection and fixation between the meat grinder and the external support structure, adapting to external support structures of different sizes and specifications, thus improving the installation compatibility of the equipment.

[0041] The specific embodiments described above further illustrate the purpose, technical solution, and beneficial effects of this utility model. It should be understood that the above description is only a specific embodiment of this utility model and is not intended to limit the scope of protection of this utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the scope of protection of this utility model.

Claims

1. A manual meat grinder, characterized in that, include: The meat grinder cylinder (1) has a material inlet (4) at the top and a material outlet (3) at one end. Meat outlet cap (2), the meat outlet cap (2) is detachably installed on the material outlet (3), the meat outlet cap (2) has multiple discharge through holes (7), and the meat outlet cap (2) has multiple receiving grooves along the circumferential direction at one end facing the meat grinder cylinder (1); Multiple supporting shafts are installed on the outer wall of the material outlet (3) along the circumferential direction, and the multiple supporting shafts can be embedded in the corresponding receiving grooves respectively; A support bushing is installed between a plurality of the supporting shafts; A drive shaft is inserted inside the meat grinder cylinder (1), with one end of the drive shaft inserted inside the support bushing and the other end of the drive shaft extending to the outside of the meat grinder cylinder (1). A helical blade is mounted on the outer wall of the transmission shaft and is arranged along the extension direction of the transmission shaft.

2. The manual meat grinder according to claim 1, characterized in that, The meat outlet cap (2) has a bushing groove at one end facing the meat grinder cylinder (1), and the bushing groove is adapted to the outer contour of the support bushing. The support bushing can be at least partially embedded in the bushing groove, thereby reducing the space occupied by the support bushing in the meat grinder cylinder (1).

3. The manual meat grinder according to claim 1 or 2, characterized in that, The edge of the meat outlet cap (2) is rotatably fitted with a screw-in sleeve (6) in the form of a circular ring; The screw-on sleeve (6) can rotate along the circumferential direction of the meat outlet end cap (2), and the inner wall of the screw-on sleeve (6) is threadedly engaged with the outer wall of the meat grinder cylinder (1).

4. The manual meat grinder according to claim 3, characterized in that, The edge of the meat outlet cap (2) is provided with a connecting groove along the circumferential direction, and the side wall of the connecting groove is provided with a guide boss along the circumferential direction. One end of the screw-on sleeve (6) is embedded in the connecting slot, and the side wall of the screw-on sleeve (6) is provided with a guide groove along the circumferential direction. The guide groove is slidably guided by the guide boss.

5. The manual meat grinder according to claim 1 or 2, characterized in that, The material inlet (4) is equipped with a feeding chamber (5), and the material inlet (4) is connected to the feeding chamber (5); The feeding chamber (5) has a funnel-shaped hollow structure, and the feeding chamber (5) can guide the material from the material inlet (4) into the meat grinder cylinder (1).

6. The manual meat grinder according to claim 1 or 2, characterized in that, The bottom end of the meat grinder cylinder (1) is equipped with a support arm (8), and the support arm (8) has a locking component and a docking seat (9). The locking component and the docking seat (9) form a locking area, which is used to achieve a detachable connection with the external support structure.

7. The manual meat grinder according to claim 6, characterized in that, The engagement assembly includes: A drive bracket (10) is mounted on the support arm (8); An adjusting screw (11) passes through the drive bracket (10), one end of the adjusting screw (11) extends into the engagement area, and the adjusting screw (11) and the drive bracket (10) are threaded together. Locking pad (12) is disposed inside the engagement area. The locking pad (12) is connected to the adjusting screw (11). The locking pad (12) can abut against or release the external support structure.

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