An energy-saving electric meat grinder for the kitchen

Abstract

This invention relates to the field of meat grinder technology and discloses an energy-saving electric kitchen meat grinder, comprising a coaxial drive mechanism and a bidirectional rotating meat grinding mechanism. Internally, it includes a horizontal grinding drum that can rotate and store meat, grinding blades installed inside the horizontal grinding drum for grinding meat, a first driven wheel that rotates with a first drive wheel and drives the horizontal grinding drum, and a second driven wheel that rotates with a second drive wheel and drives the grinding blades. This energy-saving electric kitchen meat grinder allows the grinding drum to be horizontally positioned and have a rotating function, enabling the meat inside the grinding drum to tumble due to its own gravity during grinding, thus preventing incomplete grinding caused by dead corners. Furthermore, the direction of movement of the meat and the direction of movement of the grinding blades are opposite, resulting in a faster instantaneous contact speed and increasing the grinding speed.

Description

Technical Field

[0001] This invention relates to the field of meat grinder technology, specifically to an energy-saving electric kitchen meat grinder. Background Technology

[0002] Household electric meat grinders use high-speed motors to drive blades to pulverize ingredients and have become standard equipment in modern kitchens. They can quickly complete operations such as chopping, slicing, grinding, mixing, and grinding, greatly improving food preparation efficiency.

[0003] For example, Chinese patent publication number CN120306081A discloses "An Energy-Saving Electric Meat Grinder for the Kitchen," whose main structure includes a drive unit for driving the cutting shaft to rotate and a meat grinder. A base is fixedly connected to the bottom of the meat grinder, and a docking limiting shaft is connected to the shaft center at the top of the base. A sealing discharge assembly for protecting the bottom of the cutting shaft is provided at the docking limiting shaft. This energy-saving electric meat grinder, through the sealing discharge assembly, uses the geometric characteristics of the conical surfaces of the double cones as they rotate with the cutting shaft to guide the movement of meat pieces, ensuring that meat pieces are continuously discharged from the bottom of the shaft, avoiding accumulation in dead corners, and improving the uniformity and efficiency of meat grinding. Simultaneously, the bidirectional electric push rod and start / stop ring allow the overhead and downward cutting blades to rotate freely when the cutting shaft is close to stopping, immediately relieving system resistance and protecting the drive unit and blades from extreme load damage, preventing equipment jamming.

[0004] When the aforementioned electric meat grinder cuts meat, its cutting blade operates in a longitudinal state. During the meat grinding process, the high-speed rotation causes the minced meat to have a certain centrifugal force, which in turn causes meat scraps and smaller meat particles to move towards the axis of the cutting shaft. Furthermore, some meat will be below the height of the cutting blade, resulting in some meat not being cut due to the dead angle of the cutting blade. Therefore, it has the defects of low cutting efficiency and poor effect. Summary of the Invention

[0005] To address the shortcomings of existing technologies, this invention provides an energy-saving electric kitchen meat grinder. The grinding drum is horizontally positioned and has a rotating function, allowing the meat inside the drum to tumble due to its own weight during the grinding process. This prevents incomplete grinding caused by cutting dead angles. Furthermore, the direction of meat movement is opposite to the direction of the grinding blades, resulting in a faster instantaneous contact speed and thus increasing the grinding speed, thereby solving the aforementioned technical problems.

[0006] To achieve the above objectives, the present invention provides the following technical solution: an energy-saving electric kitchen meat grinder, comprising a coaxial drive mechanism and a bidirectional rotating meat grinder mechanism. The coaxial drive mechanism includes a bottom support base for support, a first drive wheel and a second drive wheel mounted directly above the bottom support base and capable of rotation, a conical drive gear capable of driving the first drive wheel and the second drive wheel to rotate synchronously and in opposite directions, and a drive motor mounted on the upper surface of the bottom support base and capable of driving the conical drive gear to rotate. The bidirectional rotating meat grinder mechanism includes a horizontal meat grinder cylinder capable of rotation and used for storing meat, a meat grinder blade installed inside the horizontal meat grinder cylinder and capable of grinding meat, a first driven wheel capable of rotating with the first drive wheel and driving the horizontal meat grinder cylinder to rotate, and a second driven wheel capable of rotating with the second drive wheel and driving the meat grinder blade to rotate.

[0007] Preferably, the coaxial drive mechanism includes two symmetrically arranged bottom vertical mounting plates on the upper surface of the bottom support base. A drive motor is fixedly mounted at the center of the upper surface of the bottom support base via a motor mounting seat. Each of the two bottom vertical mounting plates has a concave shaft mounting groove at its opposite end. A first rotating shaft is mounted on each of the two bottom vertical mounting plates through a bearing inside its respective shaft mounting groove. A first driving wheel and a second driving wheel are respectively mounted on the opposite ends of the two first rotating shafts. The first driving wheel and the second driving wheel have first and second conical teeth respectively on their opposite end faces. A conical drive gear is fixedly mounted on the rotor end of the drive motor, and the teeth of the conical drive gear mesh with the first and second conical teeth.

[0008] Preferably, the radius of the pitch circle of the first conical tooth is the same as the radius of the pitch circle of the second conical tooth, and the radius of the first drive wheel is smaller than the radius of the second drive wheel.

[0009] Preferably, the meshing portion of the conical drive gear with the first conical tooth is symmetrically arranged with the meshing portion of the conical drive gear with the second conical tooth.

[0010] Preferably, the bidirectional rotating meat grinder mechanism includes a meat grinding cavity disposed inside a horizontal meat grinder cylinder with one end open. The horizontal meat grinder cylinder is fitted with a removable sealing cap at the open end of the meat grinding cavity. One end of the horizontal meat grinder cylinder is provided with an integrally formed second rotating shaft. The interior of the second rotating shaft is provided with a first shaft mounting hole communicating with the external space and one end of the meat grinding cavity. A rotatable third rotating shaft is mounted on the second rotating shaft through a bearing inside the first shaft mounting hole. Multiple linearly arranged meat grinding blades are fixedly mounted on the periphery of the shaft inside the meat grinding cavity on the third rotating shaft. A first driven wheel is fixedly mounted on the outer end of the second rotating shaft. A second driven wheel is fixedly mounted on the outer end of the third rotating shaft. A fourth rotating shaft with an integral structure is provided at one end of the second driven wheel.

[0011] Preferably, the radius of the second driven wheel is smaller than the radius of the first driven wheel, and the distance between the first driven wheel and the second driven wheel is the same as the distance between the first driving wheel and the second driving wheel.

[0012] Preferably, the circumferential portions of the first driven wheel and the second driven wheel can simultaneously and correspondingly abut against the circumferential portions of the first drive wheel and the second drive wheel.

[0013] Preferably, it also includes a spring-loaded control mechanism, which internally includes side fixing plates fixedly installed on both sides of the bottom vertical mounting plate and serving as limiting plates, a top horizontal plate capable of driving the movement of the second and fourth rotating shafts, a longitudinal limiting rod capable of limiting the movement of the top horizontal plate directly above the side fixing plates, and a helical spring that generates an upward elastic force on the limiting top horizontal plate.

[0014] Preferably, the spring-loaded control mechanism includes a rod through-hole disposed inside the side fixing plate, a handle rod fixedly installed on the upper surface of the limiting top horizontal plate, two symmetrical top vertical mounting plates fixedly installed on both sides of the bottom surface of the limiting top horizontal plate, the two top vertical mounting plates respectively having a second shaft mounting hole and a third shaft mounting hole, a portion of the second rotating shaft being mounted inside the second shaft mounting hole via bearings, a portion of the fourth rotating shaft being mounted inside the third shaft mounting hole via bearings, a side fixing ear integrally formed with the symmetrical sides of the limiting top horizontal plate, a longitudinal limiting rod that can be inserted into the rod through-hole being fixedly installed at the bottom end of each side fixing ear, a helical spring being sleeved around the longitudinal limiting rod, and the top of the helical spring being fixedly installed on the bottom surface of the side fixing ear.

[0015] Preferably, the structural shape of the cross-section of the rod through the hole is consistent with the structural shape of the cross-section of the longitudinal limiting rod, both being polygonal structures, and the size of the cross-section of the rod through the hole matches the size of the cross-section of the longitudinal limiting rod.

[0016] Compared with the prior art, the present invention provides an energy-saving electric meat grinder for the kitchen, which has the following beneficial effects: The meat grinder is horizontally positioned and has a rotating function, which allows the meat inside the grinder to tumble due to its own gravity during the grinding process, thus preventing incomplete grinding caused by dead corners. In addition, the direction of movement of the meat in this device is opposite to the direction of movement of the grinding blades, which allows for a faster instantaneous contact speed, thereby increasing the grinding speed. Attached Figure Description

[0017] Figure 1 This is a perspective view of the present invention; Figure 2 This is a three-dimensional cross-sectional view of the present invention; Figure 3 This is a perspective view of the coaxial drive mechanism of the present invention; Figure 4 This is a three-dimensional cross-sectional view of the coaxial drive mechanism of the present invention; Figure 5 This is a perspective view of the bidirectional rotating meat grinder mechanism in this invention; Figure 6 This is a three-dimensional cross-sectional view of the bidirectional rotating meat grinder mechanism in this invention; Figure 7 This is a perspective view of the spring-loaded control mechanism in this invention; Figure 8 This is a three-dimensional cross-sectional view of the spring-loaded control mechanism in this invention.

[0018] The components include: 1. Coaxial drive mechanism; 11. Bottom support base; 12. Bottom vertical mounting plate; 13. Shaft mounting slot; 14. No. 1 rotating shaft; 15. No. 1 drive wheel; 16. No. 2 drive wheel; 17. Motor mounting base; 18. Drive motor; 19. Conical drive gear; 110. No. 1 conical tooth; 111. No. 2 conical tooth; 2. Bidirectional rotating meat grinder mechanism; 21. Horizontal meat grinder cylinder; 22. Meat grinder cavity; 23. Sealing cover; 24. No. 2 rotating shaft. 25. Driven shaft; 26. Shaft mounting hole 1; 27. Rotating shaft 3; 28. Meat grinder blade; 29. ​​Driven wheel 1; 20. Driven wheel 2; 210. Rotating shaft 4; 3. Spring-loaded control mechanism; 31. Side fixing plate; 32. Rod through hole; 33. Top horizontal plate; 34. Hand grip rod; 35. Top vertical mounting plate; 36. Shaft mounting hole 2; 37. Shaft mounting hole 3; 38. Side fixing lug; 39. Longitudinal limit rod; 310. Helical spring. Detailed Implementation

[0019] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0020] Please see Figure 1 and Figure 2 An energy-saving electric kitchen meat grinder is described. After opening the sealing cover 23, a fixed amount of meat is placed inside the meat grinding cavity 22, and then the sealing cover 23 is closed to complete the preparation work before grinding the meat. When it is necessary to pour out the ground meat, the sealing cover 23 is opened again to pour it out.

[0021] To achieve a coaxial and reverse driving effect, please refer to [link / reference]. Figure 1 , Figure 2 , Figure 3 and Figure 4 A coaxial drive mechanism 1 is required, which includes a bottom support base 11 for support, a first drive wheel 15 and a second drive wheel 16 mounted directly above the bottom support base 11 and capable of rotation, a conical drive gear 19 that drives the first drive wheel 15 and the second drive wheel 16 to rotate synchronously and in opposite directions, and a drive motor 18 mounted on the upper surface of the bottom support base 11 that drives the conical drive gear 19 to rotate. When the drive motor 18 is started, the rotor will drive the conical drive gear 19 to rotate. Due to the meshing of the teeth, the first drive wheel 15 and the second drive wheel 16 will rotate accordingly. Since the meshing part of the conical drive gear 19 with the first conical tooth 110 and the meshing part of the conical drive gear 19 with the second conical tooth 111 are symmetrically arranged, the first drive wheel 15 and the second drive wheel 16 will produce a coaxial and opposite rotation phenomenon, thereby achieving a coaxial and opposite driving effect.

[0022] For details regarding the specific structure of the coaxial drive mechanism 1, please refer to [link / reference]. Figure 3 and Figure 4The system includes two symmetrically arranged vertical mounting plates 12 on the upper surface of a bottom support base 11. A drive motor 18 is fixedly mounted at the center of the upper surface of the bottom support base 11 via a motor mounting seat 17. Each of the two vertical mounting plates 12 has a concave shaft mounting groove 13 at its opposite end. A first rotating shaft 14 is mounted on each of the two vertical mounting plates 12 within its respective shaft mounting groove 13 via bearings. A first drive wheel 15 and a second drive wheel 16 are respectively mounted on opposite ends of the two first rotating shafts 14. The end face is respectively provided with a first conical tooth 110 and a second conical tooth 111. A conical drive gear 19 is fixedly installed at the rotor end of the drive motor 18, and the teeth of the conical drive gear 19 mesh with the first conical tooth 110 and the second conical tooth 111. The radius of the pitch circle of the first conical tooth 110 and the radius of the pitch circle of the second conical tooth 111 are the same, and the radius of the first drive wheel 15 is smaller than the radius of the second drive wheel 16. The meshing part of the conical drive gear 19 with the teeth of the first conical tooth 110 and the meshing part of the conical drive gear 19 with the teeth of the second conical tooth 111 are symmetrically arranged.

[0023] To improve the grinding effect and efficiency of meat, please refer to... Figure 1 , Figure 2 , Figure 5 and Figure 6 A bidirectional rotating meat grinder mechanism 2 is required, which includes a horizontal meat grinder cylinder 21 that can rotate and is used to store meat, a meat grinder blade 27 installed inside the horizontal meat grinder cylinder 21 that can grind meat, a first driven wheel 28 that can rotate with the first drive wheel 15 and drive the horizontal meat grinder cylinder 21, and a second driven wheel 29 that can rotate with the second drive wheel 16 and drive the meat grinder blade 27. When the circumferences of the first driven wheel 28 and the second driven wheel 29 can simultaneously and correspondingly abut against the circumferences of the first drive wheel 15 and the second drive wheel 16, and the first driven wheel 28 and the second driven wheel 29 exert their influence on the first drive wheel 15 and the second drive wheel 16, the two mechanisms are designed to work in a coordinated manner. The frictional force generated by the pressure of wheel 16 is sufficient to cause the first driven wheel 28 and the second driven wheel 29 to rotate. The first driven wheel 28 and the second driven wheel 29 will then drive the horizontal meat grinder 21 and the meat grinder blade 27 to rotate in a coaxial and opposite direction. Since the horizontal meat grinder 21 and the meat grinder blade 27 rotate in opposite directions, the meat inside the horizontal meat grinder 21 can tumble due to its own gravity during the grinding process, thereby preventing incomplete grinding caused by cutting dead corners. In addition, the movement direction of the meat in this device is opposite to the movement direction of the meat grinder blade 27, and the two have a faster instantaneous contact speed, thereby increasing the meat grinding speed.

[0024] For the specific structure of the bidirectional rotary meat grinder 2, please refer to [link / reference]. Figure 5 and Figure 6 The system includes a meat-grinding cavity 22 located inside a horizontal meat-grinding cylinder 21, with one end open. A removable sealing cap 23 is installed at the open end of the meat-grinding cavity 22. One end of the horizontal meat-grinding cylinder 21 is provided with an integrally formed second rotating shaft 24. The interior of the second rotating shaft 24 has a first shaft mounting hole 25 connecting the external space and one end of the meat-grinding cavity 22. A rotatable third rotating shaft 26 is mounted on the second rotating shaft 24 via a bearing inside the first shaft mounting hole 25. Multiple linearly arranged meat grinders are fixedly mounted on the outer periphery of the shaft inside the meat-grinding cavity 22 on the third rotating shaft 26. The blade 27, the second rotating shaft 24 has a first driven wheel 28 fixedly installed at one of its outer ends, the third rotating shaft 26 has a second driven wheel 29 fixedly installed at one of its outer ends, and a fourth rotating shaft 210 integrally formed with the second driven wheel 29 is provided at one end of the second driven wheel 29. The radius of the second driven wheel 29 is smaller than the radius of the first driven wheel 28, and the distance between the first driven wheel 28 and the second driven wheel 29 is the same as the distance between the first driving wheel 15 and the second driving wheel 16. The circumferential parts of the first driven wheel 28 and the second driven wheel 29 can simultaneously and correspondingly abut against the circumferential parts of the first driving wheel 15 and the second driving wheel 16.

[0025] To achieve directional pressure application and control of the equipment, please refer to [link / reference]. Figure 1 , Figure 2 , Figure 7 and Figure 8 A spring-loaded control mechanism 3 needs to be installed. Internally, it includes side fixing plates 31 fixedly mounted on both sides of the bottom vertical mounting plate 12 and acting as a limiting device; a top horizontal plate 33 capable of driving the movement of the second rotating shaft 24 and the fourth rotating shaft 210; a longitudinal limiting rod 39 that limits the movement of the top horizontal plate 33 along the side fixing plates 31; and a helical spring 310 that exerts an upward elastic force on the top horizontal plate 33. Holding the gripping rod 34, and then inserting the longitudinal limiting rod 39 into the corresponding through hole 32 in the rod body, the longitudinal limiting rod 39 will then guide a... Driven wheel 28 and driven wheel 29 move toward the direction of drive wheel 15 and drive wheel 16 until their circumferences simultaneously and correspondingly abut against the circumferences of drive wheel 15 and drive wheel 16, thus achieving a linkage effect. After the work is completed, the pressure on the hand grip lever 34 is released. Under the elastic pressure of the helical spring 310, driven wheel 28 and driven wheel 29 can quickly disengage from drive wheel 15 and drive wheel 16, thereby realizing the directional pressure and control function of the equipment.

[0026] For details regarding the specific structure of the spring-loaded control mechanism 3, please refer to [link / reference]. Figure 7 and Figure 8 The system includes a rod through-hole 32 located inside the side fixing plate 31. A handle 34 is fixedly installed on the upper surface of the limiting top horizontal plate 33. Two symmetrical top vertical mounting plates 35 are fixedly installed on both sides of the bottom surface of the limiting top horizontal plate 33. The two top vertical mounting plates 35 are respectively provided with a second shaft mounting hole 36 and a third shaft mounting hole 37 inside. Part of the shaft of the second rotating shaft 24 is installed inside the second shaft mounting hole 36 through a bearing. Part of the shaft of the fourth rotating shaft 210 is installed inside the third shaft mounting hole 37 through a bearing. The limiting top horizontal plate 3... On each of the symmetrical sides of the rod 3, there is a side fixing ear 38 integrally formed with it. At the bottom end of each side fixing ear 38, a longitudinal limiting rod 39 that can be inserted into the rod body through hole 32 is fixedly installed. A helical spring 310 is sleeved around the longitudinal limiting rod 39, and the top of the helical spring 310 is fixedly installed on the bottom surface of the side fixing ear 38. The cross-sectional shape of the rod body through hole 32 is consistent with the cross-sectional shape of the longitudinal limiting rod 39, both of which are polygonal structures, and the dimensions of the cross-sectional shape of the rod body through hole 32 match the dimensions of the cross-sectional shape of the longitudinal limiting rod 39.

[0027] In use, open the sealing cover 23, place the rated amount of meat into the meat grinding cavity 22, then close the sealing cover 23, start the drive motor 18, and the rotor will drive the conical drive gear 19 to rotate. Due to the meshing of the teeth, the first drive wheel 15 and the second drive wheel 16 will rotate accordingly. Because the meshing parts of the conical drive gear 19 and the first conical tooth 110 are symmetrically arranged with the meshing parts of the conical drive gear 19 and the second conical tooth 111, the first drive wheel 15 and the second drive wheel 16 will rotate accordingly. The driven wheel 16 will then rotate coaxially and in opposite directions, completing the preparation work before grinding the meat. Hold the handle 34 and then insert the longitudinal limiting rod 39 into the corresponding through hole 32 in the rod body. At this time, the longitudinal limiting rod 39 will guide the first driven wheel 28 and the second driven wheel 29 to move in the direction of the first driving wheel 15 and the second driving wheel 16, until the circumference of the first driven wheel 28 and the second driven wheel 29 can simultaneously and correspondingly abut against the circumference of the first driving wheel 15 and the second driving wheel 16. When the frictional force generated by the pressure of the first driven wheel 28 and the second driven wheel 29 on the first drive wheel 15 and the second drive wheel 16 is sufficient to cause the first driven wheel 28 and the second driven wheel 29 to rotate, the first driven wheel 28 and the second driven wheel 29 will respectively drive the horizontal meat grinder cylinder 21 and the meat grinder blade 27 to rotate coaxially and in opposite directions. Since the horizontal meat grinder cylinder 21 and the meat grinder blade 27 rotate in opposite directions, the meat inside the horizontal meat grinder cylinder 21 can be ground up during the grinding process due to its own weight. The force can cause a tumbling state, thereby preventing incomplete mincing caused by cutting dead corners. In addition, the movement direction of the meat in the device is opposite to the movement direction of the meat grinder blade 27, and the two have a faster instantaneous contact speed, thereby increasing the meat grinding speed. After the work is completed, release the pressure on the hand grip 34. Under the elastic pressure of the helical spring 310, the first driven wheel 28 and the second driven wheel 29 can quickly disengage from the first drive wheel 15 and the second drive wheel 16. Open the sealing cover 23 to pour out the contents.

[0028] Although embodiments of the 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 invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An energy-saving electric meat grinder for the kitchen, characterized in that: include, The coaxial drive mechanism (1) is provided with a bottom support base (11) that provides support, a first drive wheel (15) and a second drive wheel (16) that are mounted directly above the bottom support base (11) and can rotate, a bevel drive gear (19) that can drive the first drive wheel (15) and the second drive wheel (16) to rotate synchronously and in opposite directions, and a drive motor (18) that is mounted on the upper surface of the bottom support base (11) and can drive the bevel drive gear (19) to rotate. And a bidirectional rotating meat grinder (2), which is provided with a horizontal meat grinder cylinder (21) that can rotate and is used to store meat, a meat grinder blade (27) installed inside the horizontal meat grinder cylinder (21) that can grind meat, a first driven wheel (28) that can rotate with the first drive wheel (15) and drive the horizontal meat grinder cylinder (21) to rotate, and a second driven wheel (29) that can rotate with the second drive wheel (16) and drive the meat grinder blade (27) to rotate; The bidirectional rotating meat grinder (2) includes a meat grinding cavity (22) located inside a horizontal meat grinding cylinder (21) and open at one end. A removable cover (23) is installed on the open end of the meat grinding cavity (22) of the horizontal meat grinding cylinder (21). A second rotating shaft (24) with an integral structure is provided at one end of the horizontal meat grinding cylinder (21). The second rotating shaft (24) has a first shaft mounting hole (25) inside, connecting the external space and one end of the meat grinding cavity (22). The second rotating shaft (24) is located at the first shaft... A rotating shaft (26) capable of rotation is installed inside the mounting hole (25) via a bearing. Multiple linearly arranged meat grinder blades (27) are fixedly installed on the outer periphery of the shaft body located inside the meat grinder cavity (22). A driven wheel (28) is fixedly installed at one end of the rotating shaft (24) located on the outside. A driven wheel (29) is fixedly installed at one end of the rotating shaft (26) located on the outside. A rotating shaft (210) with an integral structure is provided at one end of the driven wheel (29). It also includes a spring-loaded control mechanism (3), which has a side fixing plate (31) fixedly installed on both sides of the bottom vertical mounting plate (12) and has a limiting effect, a top horizontal plate (33) that can drive the second rotating shaft (24) and the fourth rotating shaft (210) to move, a longitudinal limiting rod (39) that can limit the movement of the top horizontal plate (33) directly above the side fixing plate (31), and a helical spring (310) that generates an upward elastic force on the top horizontal plate (33). The spring-loaded control mechanism (3) includes a rod through hole (32) inside the side fixing plate (31), a handle rod (34) is fixedly installed on the upper surface of the top horizontal plate (33), and two symmetrical top vertical mounting plates (35) are fixedly installed on both sides of the bottom surface of the top horizontal plate (33). The two top vertical mounting plates (35) are respectively provided with a second shaft mounting hole (36) and a third shaft mounting hole (37). Part of the second rotating shaft (24) is installed inside the second shaft mounting hole (36) through a bearing. Part of the shaft of the fourth rotating shaft (210) is installed inside the mounting hole (37) of the third shaft through bearings. A side fixing ear (38) with an integral structure is provided on the symmetrical sides of the top horizontal plate (33). A longitudinal limiting rod (39) that can be inserted into the rod through hole (32) is fixedly installed at the bottom end of each side fixing ear (38). A helical spring (310) is sleeved on the periphery of the longitudinal limiting rod (39), and the top of the helical spring (310) is fixedly installed on the bottom surface of the side fixing ear (38).

2. The energy-saving electric meat grinder for kitchens according to claim 1, characterized in that: The coaxial drive mechanism (1) includes two symmetrically arranged bottom vertical mounting plates (12) on the upper surface of the bottom support base (11). A drive motor (18) is fixedly mounted at the center of the upper surface of the bottom support base (11) via a motor mounting seat (17). Each of the two bottom vertical mounting plates (12) has a concave shaft mounting groove (13) at its opposite end. A first rotating shaft is mounted on each of the two bottom vertical mounting plates (12) via bearings inside its respective shaft mounting groove (13). (14) Two rotating shafts (14) are respectively equipped with a first drive wheel (15) and a second drive wheel (16) at opposite ends. The first drive wheel (15) and the second drive wheel (16) are respectively provided with a first conical tooth (110) and a second conical tooth (111) on their opposite end faces. A conical drive gear (19) is fixedly installed at the rotor end of the drive motor (18), and the teeth of the conical drive gear (19) mesh with the first conical tooth (110) and the second conical tooth (111).

3. An energy-saving electric meat grinder for kitchens according to claim 2, characterized in that: The radius of the pitch circle of the first conical tooth (110) is the same as the radius of the pitch circle of the second conical tooth (111), and the radius of the first drive wheel (15) is smaller than the radius of the second drive wheel (16).

4. An energy-saving electric kitchen meat grinder according to claim 3, characterized in that: The meshing parts of the conical drive gear (19) and the first conical tooth (110) are symmetrically arranged with the meshing parts of the conical drive gear (19) and the second conical tooth (111).

5. An energy-saving electric kitchen meat grinder according to claim 4, characterized in that: The radius of the second driven wheel (29) is smaller than the radius of the first driven wheel (28), and the distance between the first driven wheel (28) and the second driven wheel (29) is the same as the distance between the first driving wheel (15) and the second driving wheel (16).

6. An energy-saving electric kitchen meat grinder according to claim 5, characterized in that: The circumferential portions of the first driven wheel (28) and the second driven wheel (29) can simultaneously and correspondingly abut against the circumferential portions of the first driving wheel (15) and the second driving wheel (16).

7. An energy-saving electric kitchen meat grinder according to claim 1, characterized in that: The cross-sectional shape of the rod through hole (32) is consistent with the cross-sectional shape of the longitudinal limiting rod (39), both being polygonal structures, and the dimensions of the cross-sectional shape of the rod through hole (32) match the dimensions of the cross-sectional shape of the longitudinal limiting rod (39).

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