A processing device for metalworking fluid

Abstract

The present invention relates to the field of metalworking fluids, and discloses a processing device for metalworking fluids, including a tank body, a central shaft, a planetary frame, a sun gear, and a plurality of stirring components; the central shaft is rotatably mounted in the middle of the tank body, and a driving member for driving the central shaft to rotate is mounted on the tank body; the planetary frame is mounted on the central shaft, and a plurality of brackets in a circumferential array are provided on the planetary frame, and planetary shafts are rotatably mounted on the brackets, and planetary gears are mounted on the planetary shafts; the sun gear is mounted in the tank body, and the sun gear is located in the middle of all the planetary gears and meshes with all the planetary gears; the number of stirring components is the same as that of the planetary shafts and they correspond one to one, and the stirring components are connected to the planetary shafts in a transmission manner. The present invention can realize triple stirring of metalworking fluids, which can not only enrich the stirring methods of metalworking fluids, but also improve the stirring efficiency and stirring quality of metalworking fluids.

Description

Technical Field

[0001] The invention relates to the technical field of metalworking fluids, and in particular to a processing device for metalworking fluids. Background Art

[0002] Metalworking fluids mainly play the role of lubrication and cooling in the metalworking process, and also have the functions of rust prevention and cleaning. General metalworking fluids include cutting fluids, cutting oils, emulsions, stamping oils, quenching oils, quenching agents, high-temperature oils, extreme pressure cutting fluids, grinding fluids, rust-proof oils, cleaning agents, blackening agents, drawing oils, thickeners, etc. Metalworking cutting fluids are a kind of low-foaming, high-lubricity soluble lubricating oils. Even if they are used in environments with high requirements for processing fluids, they can minimize maintenance costs and are basically applicable to all types of processing of various metals and alloys.

[0003] In the process of producing metalworking fluid, stirring equipment is often needed to mix the metalworking fluid evenly and improve the quality of the metalworking fluid. However, the stirring method of existing stirring equipment is relatively simple, which only drives the stirring blade to rotate around the axis through the driving component, resulting in low stirring efficiency of the metalworking fluid. Summary of the invention

[0004] In view of this, an object of the present invention is to provide a processing device for metalworking fluid, so as to solve the problem pointed out in the background technology that the stirring mode of the existing stirring equipment is relatively simple, resulting in relatively low stirring efficiency for the metalworking fluid.

[0005] The present invention solves the above technical problems by the following technical means:

[0006] A processing device for metalworking fluid, the processing device comprising:

[0007] Tank;

[0008] A central shaft, the central shaft is rotatably mounted in the middle of the tank body, and a driving member for driving the central shaft to rotate is mounted on the tank body;

[0009] A planet carrier, the planet carrier is mounted on the central shaft, the planet carrier is provided with a plurality of brackets in a circumferential array, a planet shaft is rotatably mounted on the bracket, and a planet gear is mounted on the planet shaft;

[0010] A sun gear, which is installed in the tank, is located in the middle of all the planetary gears and meshes with all the planetary gears; and

[0011] A plurality of stirring components, the number of the stirring components is the same as that of the planetary shafts and they correspond one to one, and the stirring components are drivingly connected to the planetary shafts.

[0012] Furthermore, the stirring assembly includes a stirring rod and a plurality of first stirring frames, and the plurality of first stirring frames are fixed on the stirring rod in a circular array structure.

[0013] Furthermore, the stirring assembly also includes a transmission arm, one end of the transmission arm is fixed to the planetary shaft, and the other end of the transmission arm is connected to the stirring rod.

[0014] Furthermore, the stirring rod is rotatably mounted on the transmission arm, a self-rotating gear is fixed on the stirring rod, an inner gear ring matching the self-rotating gear is mounted on the bracket, and the inner gear ring and the self-rotating gear are meshed with each other.

[0015] Furthermore, a cleaning brush is installed on a side of the first stirring frame away from the stirring rod, the cleaning brush has a plurality of bristles, and an end of the bristles away from the cleaning brush can contact the inner wall of the tank body.

[0016] Furthermore, a mounting portion is fixed on the tank body, and a circular mounting hole is provided in the middle of the mounting portion; a rotating portion is provided on the sun gear, and the rotating portion is rotatably mounted in the circular mounting hole of the mounting portion; the central shaft passes through the sun gear, and a ratchet mechanism is installed between the sun gear and the central shaft;

[0017] When the central shaft rotates counterclockwise, the sun gear is fixed;

[0018] When the central shaft rotates clockwise, the central shaft drives the sun gear to rotate synchronously through the ratchet mechanism, and in this state, the end of the bristle away from the cleaning brush always keeps in contact with the inner wall of the tank body.

[0019] Furthermore, a ring-shaped mounting groove for mounting a ratchet mechanism is provided in the middle of the sun gear, and the ratchet mechanism includes a one-way ratchet and a pawl;

[0020] The one-way ratchet is fixed on the central shaft and is located in the annular mounting groove of the sun gear;

[0021] One end of the pawl is rotatably mounted in the annular mounting groove of the sun gear via a rotating shaft, and a torsion spring is installed between the pawl and the sun gear. Under the elastic force of the torsion spring, the other end of the pawl can abut against the ratchet teeth of the one-way ratchet.

[0022] Furthermore, a ring-shaped mounting groove for mounting a ratchet mechanism is provided in the middle of the sun gear, and the ratchet mechanism includes a one-way ratchet and a pawl;

[0023] The one-way ratchet is fixed on the central shaft and is located in the annular mounting groove of the sun gear;

[0024] One end of the pawl is rotatably mounted in the annular mounting groove of the sun gear via a rotating shaft, and a torsion spring is installed between the pawl and the sun gear. Under the elastic force of the torsion spring, the other end of the pawl can abut against the ratchet teeth of the one-way ratchet.

[0025] Furthermore, the mounting portion is provided with a brake mounting groove for mounting a brake mechanism, and the brake mechanism includes an electromagnet, a slider, an armature, a brake pad and a spring;

[0026] The electromagnet is fixed in the brake mounting groove of the mounting portion;

[0027] The sliding block is slidably mounted in the brake mounting groove of the mounting portion;

[0028] The armature is fixed to one end of the slider facing the electromagnet;

[0029] The brake pad is fixed to the end of the slider away from the electromagnet, and the brake pad can abut against the rotating part;

[0030] The spring is installed between the slider and the mounting portion;

[0031] When the central shaft rotates counterclockwise, the electromagnet is powered off, and the slider moves toward the side close to the rotating part under the elastic force of the spring, so that the brake pad abuts against the rotating part to fix the rotating part;

[0032] When the central shaft rotates clockwise, the electromagnet is energized to generate electromagnetic attraction on the armature, driving the slider to move toward the side close to the electromagnet, so that the brake pad is separated from the rotating part, and the restriction on the rotating part is released.

[0033] Furthermore, a plurality of second stirring frames in a circular array are fixed on the central axis.

[0034] Beneficial effects of the present invention:

[0035] 1. By adopting the technical solution of the present application, when the metalworking fluid needs to be stirred, the raw materials for producing the metalworking fluid are first introduced into the tank body; then the central shaft is driven to rotate by the driving member, and the planetary frame is driven to rotate by the central shaft; since the sun gear is fixed and meshes with all the planetary gears, when the planetary frame rotates, the stirring assembly can be driven to rotate by the planetary shaft. Through such an arrangement, all stirring assemblies can rotate around both the central shaft and the planetary shaft, thereby improving the stirring efficiency and stirring quality of the metalworking fluid.

[0036] 2. By adopting the technical solution of the present application, when the device is used to stir the metalworking fluid, the stirring rod can not only rotate around the central axis, but also make eccentric motion around the planetary axis through the transmission arm, and can also rotate on its own, thereby achieving a triple stirring effect, further enriching the stirring method of the device, thereby further improving the stirring efficiency and stirring quality of the metalworking fluid.

[0037] 3. By adopting the technical solution of the present application, when the metalworking fluid needs to be stirred, the central shaft can be driven to rotate counterclockwise by the driving member. In this state, the sun gear is fixed and all stirring components can normally perform stirring operations on the metalworking fluid. When the tank needs to be cleaned, the central shaft is first driven counterclockwise by the driving member, and the position of the cleaning brush is adjusted so that the bristles of the cleaning brush always keep in contact with the inner wall of the tank; then the central shaft is driven clockwise by the driving member, and the central shaft drives the sun gear to rotate synchronously through the ratchet mechanism, so that the sun gear also rotates synchronously with the planetary carrier; in this state, the planetary gear will not rotate, so that the stirring rod will not rotate around the planetary shaft, nor will it rotate on its own, and can only rotate around the central shaft; and the bristles of the cleaning brush always rest against the inner wall of the tank, so that the cleaning brush can continuously clean the inner wall of the tank.

[0038] 4. By adopting the technical solution of the present application and setting a braking mechanism, it can be ensured that when the central shaft rotates counterclockwise, the sun gear can be fixed, and when the central shaft rotates clockwise, the sun gear can rotate with the central shaft, so that the device can operate normally. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] Figure 1 It is a structural schematic diagram of a processing device in an embodiment of the present application;

[0040] Figure 2 is a cross-sectional view of a processing device in an embodiment of the present application;

[0041] Figure 3 is an exploded schematic diagram of a processing device in an embodiment of the present application;

[0042] Figure 4 is a cross-sectional view showing the ratchet mechanism in the embodiment of the present application;

[0043] Figure 5 is a cross-sectional view showing the braking mechanism in an embodiment of the present application;

[0044] Figure 6 yes Figure 5 A schematic diagram of the enlarged structure at A in the middle;

[0045] Among them, 100, tank body; 110, discharge port; 120, feed port; 130, solenoid valve; 140, mounting part; 141, brake mounting groove; 200, central axis; 210, driving member; 220, second stirring frame; 300, planetary frame; 310, bracket; 320, planetary shaft; 330, planetary gear; 340, inner ring; 400, sun gear; 410, rotating part; 420, annular mounting groove; 500, stirring assembly; 510, stirring rod; 511, self-rotating gear; 520, first stirring frame; 530, transmission arm; 600, cleaning brush; 610, bristles; 700, ratchet mechanism; 710, one-way ratchet; 720, pawl; 800, brake mechanism; 810, electromagnet; 820, slider; 830, armature; 840, brake pad; 850, spring. DETAILED DESCRIPTION

[0046] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0047] like Figure 1-Figure 6 As shown, the embodiment of the present application provides a processing device for metalworking fluid, the processing device includes a tank body 100, a central shaft 200, a planetary carrier 300, a sun gear 400 and a plurality of stirring components 500. Among them, the tank body 100 is a split reaction tank, and the split parts are connected by flanges. The tank body 100 is respectively provided with a discharge port 110 and a feed port 120, and the discharge port 110 and the feed port 120 are both provided with a solenoid valve 130 for controlling on and off.

[0048] like Figure 2-3As shown, the central shaft 200 is rotatably mounted in the middle of the tank body 100, and a driving member 210 for driving the central shaft 200 to rotate is installed on the tank body 100. The driving member 210 is specifically a motor, preferably a stepping motor or a servo motor. The output shaft of the motor is fixed to the upper end of the central shaft 200 through a coupling, thereby driving the central shaft 200 to rotate. The planetary frame 300 is fixed on the central shaft 200, and a plurality of brackets 310 in a circumferential array are provided on the planetary frame 300. In this embodiment, the number of brackets 310 is set to three. A planetary shaft 320 is rotatably mounted on the bracket 310, and a planetary gear 330 is installed on the planetary shaft 320. The sun gear 400 is installed in the tank body 100, and the sun gear 400 is located in the middle of all the planetary gears 330, and meshes with all the planetary gears 330. The middle of the sun gear 400 is provided with an avoidance hole for the central shaft 200 to pass through. The number of stirring components 500 is the same as that of the planetary shafts 320 and they correspond one to one, and are also arranged in three groups. The stirring components 500 are transmission-connected to the planetary shafts 320 , and the stirring components 500 are driven to rotate by the planetary shafts 320 .

[0049] By adopting the above technical solution, when the metalworking fluid needs to be stirred, the raw materials for producing the metalworking fluid are first introduced into the tank body 100; then the central shaft 200 is driven to rotate by the driving member 210, and the planetary carrier 300 is driven to rotate by the central shaft 200; since the sun gear 400 is fixed and meshes with all the planetary gears 330, when the planetary carrier 300 rotates, the stirring assembly 500 can be driven to rotate by the planetary shaft 320. By such an arrangement, all the stirring assemblies 500 can rotate around the central shaft 200 and the planetary shaft 320, thereby improving the stirring efficiency and stirring quality of the metalworking fluid.

[0050] In this embodiment, if Figure 3 As shown, the stirring assembly 500 includes a stirring rod 510 and a plurality of first stirring frames 520, and the plurality of first stirring frames 520 are fixed on the stirring rod 510 in a circumferential array structure. In this embodiment, the number of the first stirring frames 520 is specifically set to three, and the stirring of the metalworking fluid is achieved by the mutual cooperation of the first stirring frames 520 and the first stirring frames 520. In fact, the stirring assembly 500 may also include a stirring rod 510 and a plurality of stirring blades fixed on the stirring rod 510, as long as the stirring effect on the metalworking fluid can be achieved.

[0051] In this embodiment, a plurality of second stirring frames 220 in a circular array are fixed on the central shaft 200. In this embodiment, the number of the second stirring frames 220 is specifically set to three. Through the cooperation between the second stirring frames 220 and the first stirring frames 520, the metalworking fluid in the tank body 100 can be stirred in all directions, further improving the stirring efficiency and stirring quality of the metalworking fluid.

[0052] In this embodiment, the stirring assembly 500 further includes a transmission arm 530, one end of which is fixed to the planetary shaft 320, and the other end of which is connected to the stirring rod 510. By providing the transmission arm 530, the stirring rod 510 is not coaxial with the planetary shaft 320, and the eccentric movement of the stirring rod 510 is achieved, thereby enriching the stirring mode of the device and further improving the stirring efficiency and stirring quality of the metalworking fluid.

[0053] In this embodiment, the stirring rod 510 is rotatably mounted on the transmission arm 530, and a self-rotating gear 511 is fixed to the stirring rod 510. An inner gear ring 340 matching the self-rotating gear 511 is fixed to the bracket 310, and a rack is provided on the inner ring of the inner gear ring 340, and the inner gear ring 340 and the self-rotating gear 511 are meshed with each other. With such an arrangement, when the planetary shaft 320 drives the stirring rod 510 to rotate eccentrically through the transmission arm 530, the stirring rod 510 can rotate due to the meshing action of the inner gear ring 340 and the self-rotating gear 511.

[0054] By adopting the above-mentioned technical solution, when the device is used to stir the metalworking fluid, the stirring rod 510 can not only rotate around the central axis 200, but also make eccentric motion around the planetary axis 320 through the transmission arm 530, and can also rotate on its own, thereby achieving a triple stirring effect, further enriching the stirring method of the device, thereby further improving the stirring efficiency and stirring quality of the metalworking fluid.

[0055] In this embodiment, a cleaning brush 600 is fixed to one side of the first stirring frame 520 away from the stirring rod 510, and the cleaning brush 600 has a plurality of bristles 610, and one end of the bristles 610 away from the cleaning brush 600 can contact the inner wall of the tank body 100. It should be noted that the cleaning brush 600 can be installed on only one of the first stirring frames 520 in each stirring assembly 500. By setting it in this way, when cleaning the tank body 100, the inner wall of the tank body 100 can be scrubbed with the cleaning brush 600 and clean water, thereby improving the convenience of cleaning the tank body 100. In addition, the cleaning brush 600 can also be installed on the bottom side of the first stirring frame 520 and the second stirring frame 220, so as to scrub the bottom side of the tank body 100.

[0056] In this embodiment, a mounting portion 140 is fixed to the top side of the tank body 100. The mounting portion 140 is an annular structure, and a circular mounting hole is provided in the middle of the mounting portion 140. A rotating portion 410 is fixed to the sun gear 400, and the rotating portion 410 is rotatably mounted in the circular mounting hole of the mounting portion 140; the central shaft 200 passes through the sun gear 400, and a ratchet mechanism 700 is installed between the sun gear 400 and the central shaft 200. When the central shaft 200 rotates counterclockwise, the sun gear 400 is fixed; when the central shaft 200 rotates clockwise, the central shaft 200 drives the sun gear 400 to rotate synchronously through the ratchet mechanism 700, and in this state, the end of the bristles 610 away from the cleaning brush 600 always keeps in contact with the inner wall of the tank body 100.

[0057] By adopting the above technical solution, when the metalworking fluid needs to be stirred, the central shaft 200 can be driven counterclockwise by the driving member 210. In this state, the sun gear 400 is fixed and all the stirring components 500 can normally perform the stirring operation on the metalworking fluid. When the tank body 100 needs to be cleaned, the central shaft 200 is first driven counterclockwise by the driving member 210 to adjust the position of the cleaning brush 600 so that the bristles 610 of the cleaning brush 600 always keep in contact with the inner wall of the tank body 100; then the central shaft 200 is driven clockwise by the driving member 210, and the central shaft 200 drives the sun gear 400 to rotate synchronously through the ratchet mechanism 700, so that the sun gear 400 also rotates synchronously with the planetary carrier 300; in this state, the planetary gear 330 will not rotate, so that the stirring rod 510 will not rotate around the planetary shaft 320, nor will it rotate on its own, and can only rotate around the central shaft 200; and the bristles 610 of the cleaning brush 600 always rest against the inner wall of the tank body 100, so that the cleaning brush 600 can continuously clean the inner wall of the tank body 100.

[0058] It should be noted that if the central shaft 200 rotates counterclockwise, the sun gear 400 is fixed, and the cleaning brush 600 also rotates around the planetary shaft 320 and the stirring rod 510, the inner wall of the tank body 100 can only be cleaned intermittently, and the cleaning efficiency is relatively low. By adopting the above technical solution, the inner wall of the tank body 100 can be cleaned continuously, and the cleaning efficiency is improved.

[0059] In this embodiment, if Figure 4As shown, the middle part of the sun gear 400 is provided with an annular mounting groove 420 for mounting the ratchet mechanism 700, and the ratchet mechanism 700 includes a one-way ratchet 710 and a pawl 720. The one-way ratchet 710 is fixed on the central shaft 200 and is located in the annular mounting groove 420 of the sun gear 400; one end of the pawl 720 is rotatably mounted in the annular mounting groove 420 of the sun gear 400 through a rotating shaft, and a torsion spring is installed between the pawl 720 and the sun gear 400, and under the elastic force of the torsion spring, the other end of the pawl 720 can be against the ratchet teeth of the one-way ratchet 710. The one-way movement of the sun gear 400 is achieved by the mutual cooperation between the one-way ratchet 710 and the pawl 720. In addition, the number of the pawl 720 can be set to one or more.

[0060] In this embodiment, if Figure 5 As shown, a brake mechanism 800 is installed between the mounting portion 140 and the rotating portion 410; when the central shaft 200 rotates counterclockwise, the brake mechanism 800 fixes the sun gear 400; when the central shaft 200 rotates clockwise, the brake mechanism 800 releases the restriction on the sun gear 400. By providing the brake mechanism 800, it is ensured that when the central shaft 200 rotates counterclockwise, the sun gear 400 can be fixed, and when the central shaft 200 rotates clockwise, the sun gear 400 can rotate with the central shaft 200, so that the device can operate normally.

[0061] In this embodiment, if Figure 6 As shown, the mounting portion 140 is provided with a brake mounting groove 141 for mounting the brake mechanism 800, and the brake mechanism 800 includes an electromagnet 810, a slider 820, an armature 830, a brake pad 840 and a spring 850. The electromagnet 810 is fixed in the brake mounting groove 141 of the mounting portion 140; the slider 820 is slidably mounted in the brake mounting groove 141 of the mounting portion 140; the armature 830 is fixed to one end of the slider 820 facing the electromagnet 810; the brake pad 840 is preferably made of rubber material, fixed to one end of the slider 820 away from the electromagnet 810, and can be against the rotating portion 410; the spring 850 is installed between the slider 820 and the mounting portion 140.

[0062] By adopting the above-mentioned technical solution, when the central shaft 200 rotates counterclockwise, the electromagnet 810 is de-energized, and the slider 820 moves toward the side close to the rotating part 410 under the elastic force of the spring 850, so that the brake pad 840 abuts against the rotating part 410, thereby fixing the rotating part 410; when the central shaft 200 rotates clockwise, the electromagnet 810 is energized, generating electromagnetic attraction on the armature 830, driving the slider 820 to move toward the side close to the electromagnet 810, so that the brake pad 840 is separated from the rotating part 410, thereby releasing the restriction on the rotating part 410.

[0063] In fact, the brake mechanism 800 may also use an electric push rod and a brake pad 840 . The brake pad 840 is installed on the output shaft of the electric push rod. The electric push rod pushes the brake pad 840 against the rotating part 410 to fix the rotating part 410 .

[0064] In addition, the braking mechanism 800 in this embodiment can be provided in multiple groups, for example, two groups, to improve the stability of braking the rotating part 410 .

[0065] The above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit the present invention. Although the present invention is described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that the technical solutions of the present invention may be modified or replaced by equivalents without departing from the purpose and scope of the technical solutions of the present invention, which should be included in the scope of the claims of the present invention. The techniques, shapes, and structural parts not described in detail in the present invention are all known technologies.

Claims

1. A processing device for metalworking fluid, characterized in that: The processing device comprises: Tank body (100); A central shaft (200), the central shaft (200) being rotatably mounted in the middle of the tank body (100), and a driving member (210) for driving the central shaft (200) to rotate is mounted on the tank body (100); A planet carrier (300), the planet carrier (300) being mounted on a central shaft (200), the planet carrier (300) being provided with a plurality of brackets (310) arranged in a circumferential array, a planet shaft (320) being rotatably mounted on the bracket (310), and a planet gear (330) being mounted on the planet shaft (320); a sun gear (400), wherein the sun gear (400) is installed in the tank (100), the sun gear (400) is located in the middle of all the planetary gears (330), and is meshed with all the planetary gears (330); and A plurality of stirring assemblies (500), wherein the number of the stirring assemblies (500) is the same as that of the planetary shafts (320) and the number of the stirring assemblies (500) corresponds one to one, and the stirring assemblies (500) are drivingly connected to the planetary shafts (320); The stirring assembly (500) comprises a stirring rod (510) and a plurality of first stirring frames (520), wherein the plurality of first stirring frames (520) are fixed on the stirring rod (510) in a circular array structure; A cleaning brush (600) is installed on a side of the first stirring frame (520) away from the stirring rod (510), the cleaning brush (600) having a plurality of bristles (610), and an end of the bristles (610) away from the cleaning brush (600) can contact the inner wall of the tank body (100); A mounting portion (140) is fixed on the tank body (100), and a circular mounting hole is provided in the middle of the mounting portion (140); a rotating portion (410) is provided on the sun gear (400), and the rotating portion (410) is rotatably mounted in the circular mounting hole of the mounting portion (140); the central shaft (200) passes through the sun gear (400), and a ratchet mechanism (700) is installed between the sun gear (400) and the central shaft (200); When the central shaft (200) rotates counterclockwise, the sun gear (400) is fixed; When the central shaft (200) rotates clockwise, the central shaft (200) drives the sun gear (400) to rotate synchronously through the ratchet mechanism (700), and in this state, the end of the bristles (610) away from the cleaning brush (600) always keeps in contact with the inner wall of the tank body (100).

2. The processing device according to claim 1, characterized in that: The stirring assembly (500) further comprises a transmission arm (530), one end of the transmission arm (530) is fixed to the planetary shaft (320), and the other end of the transmission arm (530) is connected to the stirring rod (510).

3. The processing device according to claim 2, characterized in that: The stirring rod (510) is rotatably mounted on the transmission arm (530), a self-rotating gear (511) is fixed on the stirring rod (510), an inner gear ring (340) matching the self-rotating gear (511) is mounted on the bracket (310), and the inner gear ring (340) and the self-rotating gear (511) are meshed with each other.

4. The processing device according to claim 1, characterized in that: The middle portion of the sun gear (400) is provided with an annular mounting groove (420) for mounting a ratchet mechanism (700), and the ratchet mechanism (700) comprises a one-way ratchet (710) and a ratchet pawl (720); The one-way ratchet (710) is fixed on the central shaft (200) and is located in the annular mounting groove (420) of the sun gear (400); One end of the pawl (720) is rotatably mounted in the annular mounting groove (420) of the sun gear (400) via a rotating shaft, and a torsion spring is installed between the pawl (720) and the sun gear (400). Under the elastic force of the torsion spring, the other end of the pawl (720) can be pressed against the ratchet teeth of the one-way ratchet (710).

5. The processing device according to claim 1, characterized in that: A braking mechanism (800) is installed between the installation portion (140) and the rotating portion (410); When the central shaft (200) rotates counterclockwise, the braking mechanism (800) fixes the sun gear (400); When the central shaft (200) rotates clockwise, the braking mechanism (800) releases the restriction on the sun gear (400).

6. The processing device according to claim 5, characterized in that: The mounting portion (140) is provided with a brake mounting groove (141) for mounting a brake mechanism (800), wherein the brake mechanism (800) comprises an electromagnet (810), a slider (820), an armature (830), a brake pad (840) and a spring (850); The electromagnet (810) is fixed in a brake mounting groove (141) of the mounting portion (140); The sliding block (820) is slidably mounted in the brake mounting groove (141) of the mounting portion (140); The armature (830) is fixed to one end of the slider (820) facing the electromagnet (810); The brake pad (840) is fixed to an end of the slider (820) that is away from the electromagnet (810), and the brake pad (840) can abut against the rotating part (410); The spring (850) is installed between the slider (820) and the installation portion (140); When the central shaft (200) rotates counterclockwise, the electromagnet (810) is powered off, and the slider (820) moves toward the side close to the rotating part (410) under the elastic force of the spring (850), so that the brake pad (840) abuts against the rotating part (410) to fix the rotating part (410); When the central shaft (200) rotates clockwise, the electromagnet (810) is energized to generate electromagnetic attraction on the armature (830), driving the slider (820) to move toward the side close to the electromagnet (810), so that the brake pad (840) is separated from the rotating part (410), thereby releasing the restriction on the rotating part (410).

7. The processing device according to claim 1, characterized in that: A plurality of second stirring frames (220) arranged in a circular array are fixed on the central shaft (200).

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