Multi-stage filtering equipment for improving milk purity

Abstract

The invention provides multi-stage filtering equipment for improving milk purity, and belongs to the technical field of milk processing, the multi-stage filtering equipment comprises a frame mechanism, and the frame mechanism comprises a filtering barrel, a plurality of supporting legs arranged at the bottom of the filtering barrel, and a barrel cover arranged at the top of the filtering barrel. Through the collaborative design of the frame mechanism and the filtering mechanism, efficient and refined filtering of milk is achieved, the frame mechanism provides stable supporting, the multi-stage filter screen structure of the filter screen assembly can gradually remove impurities of different particle sizes, the milk purity is remarkably improved, the cleaning assembly disperses the milk while scraping the impurities of the first-stage filter screen, and the milk quality is improved. The auxiliary assembly stirs milk through blades, the overall filtering speed is increased, the second-stage filter screen is matched with the movable assembly to generate vibration under the impact of the rotating roller, self-adaptive shaking off of impurities on the surface of the filter screen is achieved, the filtering process is further accelerated, and the service life of the second-stage filter screen is prolonged. The milk filtering efficiency is obviously improved.

Description

Technical Field

[0001] The invention belongs to the technical field of milk processing, and in particular relates to a multi-stage filtering device for improving the purity of milk. Background Art

[0002] Milk processing refers to the process of treating and transforming fresh milk through a series of physical, chemical and biotechnological means. Milk filtration is a key link in the milk processing process. It aims to remove various impurities mixed in the milk through physical interception, such as milk residue, hair, microorganisms and colloidal particles, thereby improving the purity of the milk and ensuring that the final milk meets the quality requirements for drinking or subsequent deep processing.

[0003] Traditional milk filtration equipment mostly adopts a single-stage filtration structure. This simple filtration method is difficult to effectively separate small-particle impurities such as colloids and fine protein coagulants in milk, resulting in poor purity of the finished milk and failure to meet the production standards of high-end dairy products. Some more advanced milk filtration equipment adopts a multi-stage filtration structure, but the filtration efficiency is low, and the filter surface is easily adhered and accumulated by various impurities, forming a filter cake layer, which requires frequent shutdowns for manual cleaning of the filter. This not only consumes a lot of manpower and time costs, but also interrupts the production process, seriously affecting production efficiency and corporate economic benefits. When faced with large-scale milk production tasks, it is difficult to meet the needs of fast and efficient filtration. Summary of the Invention

[0004] The purpose of the present invention is to provide a multi-stage filtration device for improving the purity of milk, aiming to solve the problems raised in the above background technology.

[0005] To achieve the above object, the present invention provides the following technical solutions:

[0006] A multi-stage filtration device for improving milk purity, comprising:

[0007] The frame mechanism includes a filter barrel, a plurality of support legs arranged at the bottom of the filter barrel, a barrel cover arranged at the top of the filter barrel, a feed port opened at the top of the barrel cover, and a discharge port opened at the bottom of the filter barrel;

[0008] The filtering mechanism includes a filter assembly fixedly mounted on the inner wall of the filter barrel, a cleaning assembly arranged on the top of the filter assembly, an auxiliary assembly arranged on the bottom of the filter assembly, and several movable components arranged around the inner wall of the filter barrel. The filter assembly is used to filter milk, the cleaning assembly is used to scrape impurities on the top of the filter assembly, the auxiliary assembly is used to speed up the filtration speed of the filter assembly, and the movable assembly is used to cooperate with the auxiliary assembly to accelerate filtration.

[0009] As a preferred solution of the present invention, the filter assembly includes a first-level filter fixedly installed on the inner wall of the filter barrel, a second-level filter arranged at the bottom of the first-level filter, and a third-level filter arranged at the bottom of the second-level filter. The second-level filter is fixedly installed on the inner wall of the filter barrel, and the filter holes opened on the surfaces of the first-level filter, the second-level filter and the third-level filter decrease in size successively.

[0010] As a preferred solution of the present invention, the cleaning component includes a driving motor adapted to be installed on the top of the barrel cover, a driving shaft fixedly connected to the output end of the driving motor, a mounting groove opened at the bottom of the driving shaft, and a driven shaft in sliding contact with the inner surface of the mounting groove, and the driving shaft is rotatably connected to the inner surface of the barrel cover.

[0011] As a preferred solution of the present invention, the cleaning assembly also includes an extrusion spring sleeved on the outer surface of the driven shaft, a transmission sleeve fixedly sleeved on the outer surface of the driven shaft, and a scraper fixedly connected to the bottom of the driven shaft, one end of the extrusion spring contacts the inner wall of the mounting groove, and the other end contacts the top of the transmission sleeve, and the transmission sleeve is rotatably connected to the inner wall of the mounting groove through a limiting protrusion and a groove.

[0012] As a preferred solution of the present invention, the auxiliary component includes a servo motor adapted to be installed on one side of the filter barrel, a first gear fixedly mounted on the output end of the servo motor, a second gear meshing with the first gear, and a support shaft arranged on one side of the servo motor, and the second gear is fixedly mounted on the outer surface of the support shaft.

[0013] As a preferred solution of the present invention, the auxiliary component further includes a first bevel gear symmetrically arranged at both ends of the support shaft, a second bevel gear meshing with the first bevel gear, and an auxiliary part fixedly connected to the inner surface of the second bevel gear.

[0014] As a preferred solution of the present invention, the auxiliary part includes a rotating shaft fixedly connected to the inner surface of the second bevel gear, blades circumferentially distributed on the outer surface of the rotating shaft, a support frame circumferentially distributed on the outer surface of the rotating shaft, and a roller rotatably connected to the outer side of the support frame.

[0015] As a preferred solution of the present invention, the movable component includes a mounting block fixedly installed on the inner wall of the filter barrel, a support rod fixedly connected to the bottom of the secondary filter screen, a vibration spring sleeved on the outer surface of the support rod, a support block fixedly installed on the inner wall of the mounting block, and a limit plate fixedly installed on the bottom of the support rod.

[0016] As a preferred solution of the present invention, the outer surface of the support rod is in sliding contact with the inner wall of the mounting block, one end of the vibration spring is in contact with the support rod, and the other end is in contact with the top of the support block, and the outer surface of the support rod is in sliding contact with the inner surface of the support block.

[0017] Compared with the prior art, the beneficial effects of the present invention are: through the coordinated design of the frame mechanism and the filtering mechanism, efficient and refined filtration of milk is achieved, the frame mechanism provides stable support, the multi-stage filter structure of the filter assembly can gradually remove impurities of different particle sizes, significantly improving the purity of milk, the cleaning assembly disperses the milk while scraping impurities from the first-level filter, effectively improving the filtration efficiency of the filter at this level, eliminating the need for frequent manual cleaning of the filter, reducing downtime, the auxiliary assembly stirs the milk through the blades, speeding up the overall filtration speed, the secondary filter is vibrated by the movable assembly under the impact of the roller, achieving adaptive shaking off of impurities on the filter surface, further accelerating the filtration process, and significantly improving the filtration efficiency of milk. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for describing the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. Those skilled in the art can also derive other drawings based on these drawings without inventive effort. Among them:

[0019] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0020] Figure 2 This is a schematic diagram of the internal structure of the filter barrel of the present invention;

[0021] Figure 3 is a schematic cross-sectional view of the cleaning component of the present invention;

[0022] Figure 4 A bottom view of the auxiliary component of the present invention;

[0023] Figure 5 For the present invention Figure 4 Schematic diagram of the structure at A in the middle;

[0024] Figure 6 It is a schematic diagram of the auxiliary member mechanism of the present invention;

[0025] Figure 7 Schematic diagram of the internal structure of the active component of the present invention.

[0026] In the figure: 100, frame mechanism; 101, filter barrel; 102, support leg; 103, barrel cover; 104, feed port; 105, discharge port; 200, filter mechanism; 201, filter screen assembly; 201a, primary filter screen; 201b, secondary filter screen; 201c, tertiary filter screen; 202, cleaning assembly; 202a, drive motor; 202b, drive shaft; 202c, mounting slot; 202d, driven shaft; 202e, extrusion spring; 202f, transmission sleeve; 202g, scraper; 20 3. Auxiliary components; 203a. Servo motor; 203b. First gear; 203c. Second gear; 203d. Support shaft; 203e. First bevel gear; 203f. Second bevel gear; 203g. Auxiliary parts; 203g-1. Rotating shaft; 203g-2. Blade; 203g-3. Support frame; 203g-4. Roller; 204. Movable component; 204a. Mounting block; 204b. Support rod; 204c. Vibration spring; 204d. Support block; 204e. Limiting plate. DETAILED DESCRIPTION

[0027] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific embodiments of the present invention are described in detail below with reference to the accompanying drawings.

[0028] In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Those skilled in the art may make similar generalizations without violating the connotation of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0029] Secondly, the term "one embodiment" or "embodiment" herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The phrase "in one embodiment" appearing in various places throughout this specification does not necessarily refer to the same embodiment, nor does it refer to a separate or selective embodiment that is mutually exclusive of other embodiments.

[0030] Example 1

[0031] Reference Figure 1-7 , which is the first embodiment of the present invention, provides a multi-stage filtering device for improving the purity of milk, comprising:

[0032] The frame mechanism 100 includes a filter barrel 101, a plurality of support legs 102 disposed at the bottom of the filter barrel 101, a barrel cover 103 disposed at the top of the filter barrel 101, a feed port 104 opened at the top of the barrel cover 103, and a discharge port 105 opened at the bottom of the filter barrel 101;

[0033] The filtering mechanism 200 includes a filter assembly 201 fixedly mounted on the inner wall of the filter barrel 101, a cleaning assembly 202 arranged on the top of the filter assembly 201, an auxiliary assembly 203 arranged on the bottom of the filter assembly 201, and several movable components 204 arranged around the inner wall of the filter barrel 101. The filter assembly 201 is used to filter milk, the cleaning assembly 202 is used to scrape off impurities on the top of the filter assembly 201, the auxiliary assembly 203 is used to speed up the filtration speed of the filter assembly 201, and the movable assembly 204 is used to cooperate with the auxiliary assembly 203 to accelerate filtration.

[0034] Specifically, the filter assembly 201 includes a first-level filter 201a fixedly installed on the inner wall of the filter barrel 101, a second-level filter 201b arranged at the bottom of the first-level filter 201a, and a third-level filter 201c arranged at the bottom of the second-level filter 201b. The second-level filter 201b is fixedly installed on the inner wall of the filter barrel 101, and the filter holes opened on the surfaces of the first-level filter 201a, the second-level filter 201b and the third-level filter 201c decrease in size successively.

[0035] It should be noted that the multi-stage filtering structure design of the filter assembly 201 can gradually filter out impurities of different particle sizes in the milk, thereby achieving refined filtration of the milk.

[0036] Furthermore, the cleaning component 202 includes a drive motor 202a adapted to be installed on the top of the barrel cover 103, a drive shaft 202b fixedly connected to the output end of the drive motor 202a, a mounting groove 202c opened at the bottom of the drive shaft 202b, and a driven shaft 202d in sliding contact with the inner surface of the mounting groove 202c. The drive shaft 202b is rotatably connected to the inner surface of the barrel cover 103.

[0037] Furthermore, the cleaning component 202 also includes an extrusion spring 202e sleeved on the outer surface of the driven shaft 202d, a transmission sleeve 202f fixedly sleeved on the outer surface of the driven shaft 202d, and a scraper 202g fixedly connected to the bottom of the driven shaft 202d. One end of the extrusion spring 202e contacts the inner wall of the mounting groove 202c, and the other end contacts the top of the transmission sleeve 202f. The transmission sleeve 202f is rotatably connected to the inner wall of the mounting groove 202c through a limiting protrusion and a limiting groove.

[0038] It should be noted that while the cleaning component 202 scrapes and cleans the surface of the first-stage filter 201a, it also disperses the milk on the surface of the first-stage filter 201a, thereby improving the filtration efficiency. The inner wall of the mounting groove 202c is annularly provided with a plurality of limiting protrusions, and the outer surface of the transmission sleeve 202f is annularly provided with a limiting groove, and the two engage with each other to limit the relative rotation between the drive shaft 202b and the transmission sleeve 202f. The extrusion spring 202e pushes the scraper 202g downward through the transmission sleeve 202f, so that the scraper 202g always fits the surface of the filter, thereby achieving elastic scraping of impurities on the top of the first-stage filter 201a. The driving motor 202a drives the driving shaft 202b to rotate, and the driving shaft 202b drives the driven shaft 202d to rotate through the transmission sleeve 202f. The driven shaft 202d drives the scraper 202g fixedly connected thereto to rotate, and the scraper 202g maintains contact with the top of the first-stage filter 201a, so that impurities accumulated on the surface of the filter can be scraped off.

[0039] Among them, the auxiliary component 203 includes a servo motor 203a adapted to be installed on one side of the filter barrel 101, a first gear 203b fixedly sleeved on the output end of the servo motor 203a, a second gear 203c meshing with the first gear 203b, and a support shaft 203d arranged on one side of the servo motor 203a, and the second gear 203c is fixedly sleeved on the outer surface of the support shaft 203d.

[0040] Preferably, the auxiliary component 203 further includes a first bevel gear 203e symmetrically arranged at both ends of the support shaft 203d, a second bevel gear 203f meshing with the first bevel gear 203e, and an auxiliary member 203g fixedly connected to the inner surface of the second bevel gear 203f.

[0041] It should be noted that the support shaft 203d is rotatably installed on one side of the filter barrel through a bearing seat, and is used to simultaneously drive the auxiliary parts 203g on both sides to rotate. When the servo motor 203a is working, the support shaft 203d is driven to rotate through the meshing transmission of the first gear 203b and the second gear 203c. When the support shaft 203d rotates, it drives the first bevel gear 203e fixed on its outer surface on both sides to rotate. When the first bevel gear 203e rotates, it drives the second bevel gear 203f meshing with it to rotate.

[0042] Specifically, the auxiliary part 203g includes a rotating shaft 203g-1 fixedly connected to the inner surface of the second bevel gear 203f, blades 203g-2 circumferentially distributed on the outer surface of the rotating shaft 203g-1, a support frame 203g-3 circumferentially distributed on the outer surface of the rotating shaft 203g-1, and a roller 203g-4 rotatably connected to the outer side of the support frame 203g-3.

[0043] It should be noted that the rotating shaft 203g-1 is horizontally arranged in the inner cavity of the filter barrel 101, and a sealing ring is provided at the connection between the rotating shaft 203g-1 and the filter barrel 101 to prevent milk leakage. When the second bevel gear 203f rotates, it drives the rotating shaft 203g-1 to rotate, and the blades 203g-2 on the rotating shaft 203g-1 stir the milk under the secondary filter 201b, thereby speeding up the speed at which the milk passes through the filter.

[0044] Furthermore, the movable component 204 includes a mounting block 204a fixedly mounted on the inner wall of the filter barrel 101, a support rod 204b fixedly connected to the bottom of the secondary filter screen 201b, a vibration spring 204c sleeved on the outer surface of the support rod 204b, a support block 204d fixedly mounted on the inner wall of the mounting block 204a, and a limiting plate 204e fixedly mounted on the bottom of the support rod 204b.

[0045] Furthermore, the outer surface of the support rod 204b is in sliding contact with the inner wall of the mounting block 204a, one end of the vibration spring 204c is in contact with the support rod 204b, and the other end is in contact with the top of the support block 204d, and the outer surface of the support rod 204b is in sliding contact with the inner surface of the support block 204d.

[0046] It should be noted that a waterproof ring is provided at the connection between the support rod 204b and the mounting block 204a. When the roller 203g-4 in the auxiliary part 203g rotates around the rotating shaft 203g-1, it will intermittently hit the secondary filter screen 201b from the bottom. The secondary filter screen 201b will drive the support rod 204b to slide up and down in the mounting block 204a, compressing and releasing the vibration spring 204c, generating vibration. The vibration is transmitted back to the secondary filter 201b, causing the secondary filter 201b to vibrate, speeding up the filtration of the milk and shaking off impurities from the surface of the filter. When the secondary filter 201b is severely clogged, the speed at which milk passes through the secondary filter 201b slows down. Due to gravity, the secondary filter 201b is pressed down by the accumulated milk and compresses the vibration spring 204c. After the height of the secondary filter 201b drops, the distance between it and the roller 203g-4 is shortened, and the vibration amplitude generated by the impact of the roller 203g-4 becomes larger, thereby shaking off stubborn impurities.

[0047] When in use, first, pour the milk from the feed port 104. After the milk enters the filter barrel 101, it first passes through the primary filter 201a. The primary filter 201a intercepts the larger particles of impurities in the milk. The drive motor 202a is started. The drive motor 202a drives the drive shaft 202b to rotate. The drive shaft 202b drives the scraper 202g to rotate on the top of the primary filter 201a through the transmission sleeve 202f and the driven shaft 202d, scraping off the impurities accumulated on the surface of the primary filter 201a and spreading the milk evenly. The scraper 202g is always in contact with the filter surface under the action of the extrusion spring 202e. After passing through the primary filter 201a, the milk flows to the secondary filter 201b. The servo motor 203a is started. The meshing transmission of the first gear 203b and the second gear 203c drives the support shaft 203d to rotate. The support shaft 203d drives the first bevel gears 203e at both ends to rotate, and the first bevel gear 203e drives the meshing gears 203e. The second bevel gear 203f rotates, and the second bevel gear 203f drives the rotating shaft 203g-1 to rotate. The blades 203g-2 on the rotating shaft 203g-1 stir the milk under the secondary filter 201b, reducing the pressure under the filter and accelerating the speed of the milk passing through the secondary filter 201b and the tertiary filter 201c. During this process, the roller 203g-4 on the rotating shaft 203g-1 intermittently hits the secondary filter 201b from the bottom. The secondary filter 201b drives the support rod 204b fixed to it to slide up and down in the mounting block 204a, compressing and releasing the vibration spring 204c, generating vibration. The vibration is transmitted back to the secondary filter 201b, causing the secondary filter 201b to vibrate, accelerating the milk filtration speed and shaking off impurities from the filter surface. The milk filtered by the secondary filter 201b continues to pass through the tertiary filter 201c for more fine filtration, and is finally discharged from the discharge port 105 at the bottom of the filter barrel 101.

[0048] In summary, the frame mechanism 100 provides stable support and material transmission functions, and the filtering mechanism 200 achieves efficient filtration of milk through the coordinated operation of the filter assembly 201, the cleaning assembly 202, the auxiliary assembly 203 and the movable assembly 204;

[0049] Among them, the multi-stage filter structure of the filter component 201, from the first-stage filter 201a to the third-stage filter 201c, gradually removes impurities of different particle sizes to achieve fine filtration of milk. The cleaning component 202, through the cooperation of the drive shaft 202b, the transmission sleeve 202f and the scraper 202g, scrapes off the impurities of the first-stage filter 201a while dispersing the milk, thereby improving the filtration efficiency of the first-stage filter 201a. The auxiliary component 203 relies on the servo motor 203a, gear transmission and blades 203g-2 to stir the milk to reduce the pressure under the filter and speed up the filtration speed. The second-stage filter 201b vibrates under the impact of the roller 203g-4 and cooperates with the movable component 204 to adaptively shake off the impurities on the surface of the second-stage filter 201b, further accelerating the filtration process.

[0050] It is important to note that the construction and arrangement of the present application shown in a number of different exemplary embodiments are merely illustrative. Although only a few embodiments are described in detail in this disclosure, it should be readily understood by those who refer to this disclosure that many modifications are possible (e.g., the size, scale, structure, shape and proportion of various elements, as well as parameter values ​​(e.g., temperature, pressure, etc.), mounting arrangements, use of materials, color, directional changes, etc.) without departing substantially from the novel teachings and advantages of the subject matter described in this application. For example, an element shown as integrally formed may be composed of multiple parts or elements, the position of the element may be inverted or otherwise changed, and the nature or number or position of the discrete elements may be altered or changed. Therefore, all such modifications are intended to be included within the scope of the present invention. The order or sequence of any process or method steps may be changed or reordered according to alternative embodiments. In the claims, any "means plus function" clause is intended to cover the structure described herein that performs the function, and is not only structurally equivalent but also equivalent structures. Other replacements, modifications, changes, and omissions may be made in the design, operating conditions, and arrangement of the exemplary embodiments without departing from the scope of the present invention. Therefore, the invention is not limited to the specific embodiments, but extends to various modifications that still fall within the scope of the appended claims.

[0051] Additionally, in order to provide a concise description of exemplary embodiments, all features of an actual embodiment (i.e., those features that are not relevant to the best mode presently contemplated for carrying out the invention or those that are not relevant to implementing the invention) may not be described.

[0052] It will be appreciated that in the development of any actual embodiment, as in any engineering or design project, numerous implementation-specific decisions may be made. Such a development effort may be complex and time-consuming, but will, for those of ordinary skill having the benefit of this disclosure, be a routine undertaking of design, fabrication, and production without undue experimentation.

[0053] It should be noted that 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 has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present invention may be modified or replaced by equivalents without departing from the spirit and scope of the technical solutions of the present invention, which should all be included in the scope of the claims of the present invention.

Claims

1. A multi-stage filtration device for improving milk purity, characterized by: include, A frame mechanism (100) comprises a filter barrel (101), a plurality of support legs (102) arranged at the bottom of the filter barrel (101), a barrel cover (103) arranged at the top of the filter barrel (101), a feed port (104) opened at the top of the barrel cover (103), and a discharge port (105) opened at the bottom of the filter barrel (101); The filtering mechanism (200) comprises a filter assembly (201) fixedly mounted on the inner wall of the filter barrel (101), a cleaning assembly (202) arranged on the top of the filter assembly (201), an auxiliary assembly (203) arranged on the bottom of the filter assembly (201), and a plurality of movable assemblies (204) arranged around the inner wall of the filter barrel (101), wherein the filter assembly (201) is used for filtering milk, the cleaning assembly (202) is used for scraping impurities on the top of the filter assembly (201), the auxiliary assembly (203) is used for accelerating the filtering speed of the filter assembly (201), and the movable assembly (204) is used for cooperating with the auxiliary assembly (203) to accelerate the filtering.

2. The multi-stage filtration device for improving milk purity according to claim 1, characterized in that: The filter assembly (201) comprises a primary filter (201a) fixedly mounted on the inner wall of the filter barrel (101), a secondary filter (201b) arranged at the bottom of the primary filter (201a), and a tertiary filter (201c) arranged at the bottom of the secondary filter (201b), wherein the secondary filter (201b) is fixedly mounted on the inner wall of the filter barrel (101), and the filter holes opened on the surfaces of the primary filter (201a), the secondary filter (201b) and the tertiary filter (201c) decrease in size in sequence.

3. The multi-stage filtration device for improving milk purity according to claim 2, characterized in that: The cleaning assembly (202) comprises a driving motor (202a) adapted to be mounted on the top of the barrel cover (103), a driving shaft (202b) fixedly connected to the output end of the driving motor (202a), a mounting groove (202c) provided at the bottom of the driving shaft (202b), and a driven shaft (202d) in sliding contact with the inner surface of the mounting groove (202c), wherein the driving shaft (202b) is rotatably connected to the inner surface of the barrel cover (103).

4. The multi-stage filtration device for improving milk purity according to claim 3, characterized in that: The cleaning component (202) further comprises an extrusion spring (202e) sleeved on the outer surface of the driven shaft (202d), a transmission sleeve (202f) fixedly sleeved on the outer surface of the driven shaft (202d), and a scraper (202g) fixedly connected to the bottom of the driven shaft (202d); one end of the extrusion spring (202e) contacts the inner wall of the mounting groove (202c), and the other end contacts the top of the transmission sleeve (202f); the transmission sleeve (202f) is rotatably connected to the inner wall of the mounting groove (202c) via a limiting protrusion and a groove.

5. The multi-stage filtration device for improving milk purity according to claim 4, characterized in that: The auxiliary component (203) includes a servo motor (203a) adapted to be installed on one side of the filter barrel (101), a first gear (203b) fixedly sleeved on the output end of the servo motor (203a), a second gear (203c) meshed with the first gear (203b), and a support shaft (203d) arranged on one side of the servo motor (203a), wherein the second gear (203c) is fixedly sleeved on the outer surface of the support shaft (203d).

6. The multi-stage filtration device for improving milk purity according to claim 5, characterized in that: The auxiliary component (203) further includes a first bevel gear (203e) symmetrically arranged at both ends of the support shaft (203d), a second bevel gear (203f) meshing with the first bevel gear (203e), and an auxiliary member (203g) fixedly connected to the inner surface of the second bevel gear (203f).

7. The multi-stage filtration device for improving milk purity according to claim 6, characterized in that: The auxiliary component (203g) includes a rotating shaft (203g-1) fixedly connected to the inner surface of the second bevel gear (203f), blades (203g-2) circumferentially distributed on the outer surface of the rotating shaft (203g-1), a support frame (203g-3) circumferentially distributed on the outer surface of the rotating shaft (203g-1), and a roller (203g-4) rotatably connected to the outer side of the support frame (203g-3).

8. The multi-stage filtration device for improving milk purity according to claim 7, characterized in that: The movable assembly (204) comprises a mounting block (204a) fixedly mounted on the inner wall of the filter barrel (101), a support rod (204b) fixedly connected to the bottom of the secondary filter screen (201b), a vibration spring (204c) sleeved on the outer surface of the support rod (204b), a support block (204d) fixedly mounted on the inner wall of the mounting block (204a), and a limiting plate (204e) fixedly mounted on the bottom of the support rod (204b).

9. The multi-stage filtration device for improving milk purity according to claim 8, characterized in that: The outer surface of the support rod (204b) is in sliding contact with the inner wall of the mounting block (204a), one end of the vibration spring (204c) is in contact with the support rod (204b), and the other end is in contact with the top of the support block (204d), and the outer surface of the support rod (204b) is in sliding contact with the inner surface of the support block (204d).

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