Grinding and filtering structure

Abstract

The utility model relates to the technical field of biology, in particular to a grinding and filtering structure which comprises a grinding and filtering pipe body integrally formed by a grinding pipe and a filtering pipe, a grinding and filtering cylinder cover capable of rotating in an inner cavity of the grinding pipe is arranged in the grinding pipe, and outer wall grooves distributed in an array mode are formed in the bottom end of the grinding and filtering cylinder cover in the circumferential direction. And a buffer collecting groove is formed in the bottom of the grinding filter cartridge cover. According to the grinding and filtering pipe, the grinding and filtering pipe body is matched with the grinding and filtering cylinder cover and the filtering assembly for use, so that when the grinding and filtering cylinder cover is driven, the bottom groove and the bottom bulge can perform circumferential staggered motion to grind a substance needing to be ground, and the ground substance automatically passes through the filtering net under the action of centrifugal force and gravity of the circumferential motion; therefore, the complete grinding and filtering process is completed, the grinding substances do not need to be transferred, cleaned and the like in the process, and the problem that the grinding substances are polluted or lost in the transferring process is solved.

Description

Technical Field

[0001] The utility model relates to the field of biotechnology, in particular to a grinding and filtering structure. Background Art

[0002] In many scenarios in daily life and work, it is necessary to grind plant and animal tissues or seeds into fine particles such as single cells. After grinding, in order to ensure the uniformity of the ground material, it is usually necessary to use a filter or filter membrane to filter out larger particles.

[0003] Currently, the more commonly used grinding methods include manual mortar crushing, mechanical rotary shearing, machine zirconium bead centrifugal vibration grinding, chemical dissociation digestion, ultrasonic crushing and other methods, each of which has its advantages and disadvantages and application scenarios.

[0004] After grinding, the above grinding methods basically need to transfer the ground material to a centrifuge tube or other vessels for re-separation and enrichment. In the process of transfer, in order to obtain a more uniform and pure ground material, filtering operation is usually required. There is a general risk of sample loss and contamination in the process of transfer and filtration.

[0005] A single-style grinding filter can only be used with one type of collection vessel for single use according to the volume required for grinding. The ground material needs to be transferred manually afterwards. Therefore, a single-style grinding filter cannot be used with multiple types of collection vessels, and its applicability is limited.

[0006] The existing grinding filter has a complex structure, is inconvenient to clean, and is prone to dead corners, which causes reactions with other substances when different substances are subsequently ground, making subsequent experiments inconvenient and affecting experimental data. Utility Model Content

[0007] The utility model provides a grinding and filtering structure to solve the problems raised in the above background technology.

[0008] In order to solve the above technical problems, the technical solution adopted by the utility model is:

[0009] A grinding and filtering structure comprises a grinding and filtering tube body formed integrally by a grinding tube and a filtering tube, wherein a grinding and filtering cartridge cover which can rotate in its inner cavity is arranged in the grinding tube, an outer wall groove distributed in an array is provided at the bottom end portion of the grinding and filtering cartridge cover along a circumferential direction, a buffer collecting groove is provided at the bottom of the grinding and filtering cartridge cover, a bottom hole which communicates with the inner cavity of the grinding and filtering cartridge cover is provided on the inner wall of the buffer collecting groove, and a limiting hole is provided at the bottom center of the grinding and filtering cartridge cover, a bottom groove in a circumferential array with the limiting hole as the center point is provided on the bottom surface of the grinding and filtering cartridge cover, a limiting protrusion which can rotatably cooperate with the limiting hole is provided at the center of the inner bottom wall of the grinding tube, a bottom protrusion in a circumferential array with the limiting protrusion as the center point is provided on the inner bottom wall of the grinding tube, a discharge port is provided on one side of the grinding tube, and a detachable filtering component is provided at the discharge port;

[0010] The filter tube comprises an annular plate connected to the bottom of the grinding tube, an arc tube connected to both the annular plate and the grinding tube, a first arc plate connected to the outer wall of the arc tube, and an arc nozzle connected to the bottom of the arc tube.

[0011] Preferably, the filter assembly includes two anti-overflow plates connected to the grinding tube, a fixing frame clamped on the anti-overflow plates, and a filter screen clamped on the inner side of the fixing frame, and the two anti-overflow plates are symmetrically arranged with the lower feed port as the symmetry axis.

[0012] Preferably, a slot is provided on the anti-overflow plate, a hook plate is provided in the slot, and the hook plate is fixedly connected to the fixing frame.

[0013] Preferably, a positioning groove is provided on the inner side of the fixing frame, and the filter is clamped in the positioning groove.

[0014] Preferably, the outer wall of the grinding filter cartridge cover is provided with a drag-reducing and anti-fouling ring, and the drag-reducing and anti-fouling ring is arranged at the top end of the outer wall groove.

[0015] Preferably, a second arc-shaped plate is fixedly connected to the bottom of the grinding tube, and the second arc-shaped plate has the same axis as the annular plate.

[0016] Preferably, a first support plate and a second support plate are fixedly connected to the bottom of the grinding tube, one side of the first support plate is fixedly connected to the outer wall of the second arc-shaped plate, and one side of the second support plate is fixedly connected to the arc-shaped tube.

[0017] Preferably, the bottom end of the arc-shaped through nozzle is lower than the bottom end of the first arc-shaped plate, and the first arc-shaped plate and the arc-shaped through nozzle have the same axis core.

[0018] Preferably, the top end of the grinding filter cartridge cover is provided with anti-slip grooves distributed in an array along the circumferential direction.

[0019] Preferably, a balancing opening is provided at the bottom of the second support plate.

[0020] By adopting the above technical solution, the beneficial effects achieved by the utility model are as follows:

[0021] In the utility model, by using a grinding filter tube body formed in one piece with a grinding tube and a filter tube in conjunction with a grinding filter cartridge cover and a filter assembly, when an external force is used to drive the grinding filter cartridge cover, the bottom groove and the bottom protrusion can perform a circular offset motion to grind the material to be ground, and under the action of the centrifugal force and gravity of the circular motion, the ground material automatically passes through the filter screen, thereby completing the complete process of grinding and filtering. During the process, there is no need to perform complicated work such as transferring and cleaning the ground material, thereby avoiding the problem of contamination or loss of the ground material during the transfer process.

[0022] In the utility model, the filter tube is composed of an annular plate, an arc tube, a first arc plate and an arc-shaped nozzle, so that the outer wall of the annular plate can be used to match a 50ml centrifuge tube, the outer wall of the first arc plate can be used to match a 15ml centrifuge tube, and the outer wall of the arc-shaped nozzle can be used to match a 5ml centrifuge tube, thereby ensuring that the grinding and filtering structure is adapted to various types of collection tubes, and the utility model is strong.

[0023] In the utility model, the operator can remove the grinding filter cartridge cover from the grinding tube, then remove the fixing frame from the grinding filter tube body, and remove the filter screen from the fixing frame, so that the multiple components are separated, which is conducive to cleaning or washing without dead corners, promotes thorough cleaning, and avoids the problem that residual substances react with other substances and affect experimental data. The overall structure is simple and the number is small, which is easy to process and mass produce, greatly reducing the production cost, and also reducing the operator's assembly and maintenance time, thereby improving efficiency.

[0024] In the utility model, through the design coordination of the outer wall groove, the bottom groove and the bottom protrusion, during the grinding process, the material that is not fully ground is driven by the groove with a larger size of the outer wall groove to shift, and under the action of gravity, it flows back through the bottom groove to the gap between the bottom groove and the bottom protrusion to be ground again until it is fully ground, thereby preventing the incompletely ground material from clogging the filter screen and ensuring smooth sampling during the grinding process.

[0025] In the utility model, through the design coordination of the limiting hole and the limiting protrusion and the design of the drag-reducing and anti-fouling ring, it is not easy for the grinding filter cartridge cover, the grinding tube and the collecting tube to be seriously eccentric when performing circular motion, thereby ensuring the grinding effect.

[0026] In the utility model, through the design of the first support plate and the second support plate, the first support plate can be used to support the second arc plate and the grinding tube at the same time, and the second support plate can be used to support the arc tube and the grinding tube at the same time, and then the first support plate and the second support plate are connected with the above-mentioned connection to form a T shape when supporting, ensuring that the bottom of the grinding tube can remain flat and not deformed when less material is used and thinner, thereby ensuring uniformity and stability during grinding. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0028] Figure 2 This is a schematic diagram of the three-dimensional bottom structure of the grinding filter cartridge cover of the utility model;

[0029] Figure 3 This is a schematic diagram of the inner cavity structure of the grinding filter cartridge cover of the utility model;

[0030] Figure 4 This is a schematic diagram of the internal structure of the grinding tube of the utility model;

[0031] Figure 5 for Figure 4 The enlarged structural diagram at A in the middle;

[0032] Figure 6 This is a schematic diagram of the fixing frame structure of the utility model;

[0033] Figure 7 This is a schematic diagram of the bottom structure of the grinding filter tube body of the utility model;

[0034] Figure 8 This is a schematic diagram of the cross-sectional structure of the grinding filter tube body of the utility model.

[0035] In the figure: 1. grinding tube; 2. filter tube; 21. annular plate; 22. arc tube; 23. first arc plate; 24. arc nozzle; 3. grinding filter tube body; 4. grinding filter cartridge cover; 5. outer wall groove; 6. buffer collection tank; 7. bottom hole; 8. limiting hole; 9. bottom groove; 10. limiting protrusion; 11. bottom protrusion; 12. discharge port; 13. anti-overflow plate; 14. fixing frame; 15. filter screen; 16. slot; 17. hook plate; 18. positioning slot; 19. drag reduction and anti-fouling ring; 20. second arc plate; 30. first support plate; 40. second support plate; 50. anti-slip groove; 60. balance port. DETAILED DESCRIPTION

[0036] In order to more clearly understand the above-mentioned purpose, features and advantages of the utility model, the utility model is further described below in conjunction with the accompanying drawings and embodiments. It should be noted that the embodiments of the present application and the features in the embodiments can be combined with each other without conflict.

[0037] 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 than those described herein. Therefore, the present invention is not limited to the specific embodiments of the following disclosure. Example

[0038] like Figure 1-8 As shown, the utility model provides a grinding and filtering structure, including a grinding and filtering tube body 3 formed integrally by a grinding tube 1 and a filtering tube 2, a grinding and filtering cartridge cover 4 rotatable in its inner cavity is arranged in the grinding tube 1, an outer wall groove 5 distributed in an array is provided at the bottom end of the grinding and filtering cartridge cover 4 along the circumferential direction, a buffer collecting groove 6 is provided at the bottom of the grinding and filtering cartridge cover 4, a bottom hole 7 communicating with the inner cavity of the grinding and filtering cartridge cover 4 is provided on the inner wall of the buffer collecting groove 6, and a limiting hole 8 is provided at the center of the bottom of the grinding and filtering cartridge cover 4, a bottom groove 9 in a circumferential array with the limiting hole 8 as the center point is provided on the bottom surface of the grinding and filtering cartridge cover 4, and a limiting protrusion 10 rotatably matched with the limiting hole 8 is provided at the center of the inner bottom wall of the grinding tube 1, a bottom protrusion 11 in a circumferential array with the limiting protrusion 10 as the center point is provided on the inner bottom wall of the grinding tube 1, a discharge port 12 is provided on one side of the grinding tube 1, and a detachable filtering component is provided at the discharge port 12;

[0039] The filter tube 2 includes an annular plate 21 connected to the bottom of the grinding tube 1, an arc tube 22 connected to both the annular plate 21 and the grinding tube 1, a first arc plate 23 connected to the outer wall of the arc tube 22, and an arc nozzle 24 connected to the bottom of the arc tube 22.

[0040] Specifically, the collection tube for collecting the ground material can be freely selected from various commercially available 5ml centrifuge tubes, 15ml centrifuge tubes, 50ml centrifuge tubes, glass tubes, culture bottles, etc. according to actual conditions, wherein the outer wall of the annular plate 21 is used to match the 50ml centrifuge tube, the outer wall of the first arc plate 23 is used to match the 15ml centrifuge tube, and the outer wall of the arc-shaped nozzle 24 is used to match the 5ml centrifuge tube.

[0041] Specifically, the bottom groove 9 is composed of eight groups of semicircular grooves of different lengths, and the bottom protrusion 11 is composed of eight groups of semicircular protrusion strips of different lengths. The semicircular groove design of the bottom groove 9 can reduce the wear with the bottom protrusion 11 during the contact process, thereby increasing the service life of the grinding and filtering device.

[0042] Specifically, when the grinding filter cartridge cover 4 is assembled in the grinding tube 1, the limiting protrusion 10 corresponds to the limiting hole 8 and is arranged in the limiting hole 8, ensuring that the grinding filter cartridge cover 4 will not be seriously eccentric and affect the grinding effect.

[0043] Specifically, the size of the inner cavity of the grinding tube 1 can be adapted to various commonly used syringe rod heads in laboratories. The operator can use discarded syringe rod heads in conjunction with the grinding tube 1 to complete the grinding and filtering operations, thereby realizing waste utilization and further saving costs.

[0044] Specifically, one end of the outer wall groove 5 is connected to one end of the bottom groove 9, so that the insufficiently ground material flows back through the bottom groove 9 to the gap between the bottom groove 9 and the bottom protrusion 11 under the action of gravity for re-grinding until it is fully ground.

[0045] In this embodiment, the filter assembly includes two anti-overflow plates 13 connected to the grinding tube 1, a fixing frame 14 clamped on the anti-overflow plates 13, and a filter screen 15 clamped on the inner side of the fixing frame 14, and the two anti-overflow plates 13 are symmetrically arranged with the lower material port 12 as the symmetry axis, a slot 16 is provided on the anti-overflow plate 13, a hook plate 17 is clamped in the slot 16, the hook plate 17 is fixedly connected to the fixing frame 14, a positioning groove 18 is provided on the inner side of the fixing frame 14, and the filter screen 15 is clamped in the positioning groove 18.

[0046] Specifically, by disassembling and assembling the hook plate 17 in the slot 16, the fixing frame 14 can be separated from the grinding filter tube body 3, and the positioning slot 18 facilitates the disassembly and assembly or replacement of the filter screen 15, thereby ensuring that the filter device is easy to clean after being disassembled, and that dead corners are also easy to clean, thereby avoiding incomplete cleaning, which may cause subsequent grinding of different substances to react with other substances and affect the experimental data.

[0047] More specifically, the filter screen 15 used for filtering substances is not limited to a mesh shape when in use, and the filter screen 15 can also be replaced with a filter membrane, so that the cell filter screen 15 membranes with various pore sizes can be suitable for animal and plant tissue cells of different sizes.

[0048] In this embodiment, the outer wall of the grinding filter cartridge cover 4 is provided with a drag-reducing and anti-fouling ring 19, and the drag-reducing and anti-fouling ring 19 is arranged at the top of the outer wall groove 5. Specifically, the drag-reducing and anti-fouling ring 19 can prevent the material to be ground from flowing out from the gap between the grinding filter cartridge cover 4 and the inner wall of the grinding tube 1, and greatly reduce the friction resistance between the grinding filter cartridge cover 4 and the grinding tube 1 during the dislocation movement.

[0049] In this embodiment, a second curved plate 20 is fixedly connected to the bottom of the grinding tube 1, and the second curved plate 20 has the same axis as the annular plate 21. Specifically, when the mouth of the 50ml centrifuge tube is sleeved on the outer wall of the annular plate 21, a part of the outer wall of the mouth of the tube can be arranged between the annular plate 21 and the second curved plate 20, so as to achieve the effect of limiting the mouth of the centrifuge tube, thereby ensuring that the grinding and filtering structure body and the 50ml centrifuge tube will not be misaligned during the subsequent grinding process, thereby increasing the grinding resistance.

[0050] In this embodiment, the bottom of the grinding tube 1 is fixedly connected with a first support plate 30 and a second support plate 40, one side of the first support plate 30 is fixedly connected to the outer wall of the second arc-shaped plate 20, one side of the second support plate 40 is fixedly connected to the arc-shaped tube 22, and a balancing opening 60 is provided at the bottom of the second support plate 40. Specifically, the first support plate 30 can be used to support the second arc-shaped plate 20 and the grinding tube 1 at the same time, and the second support plate 40 can be used to support the arc-shaped tube 22 and the grinding tube 1 at the same time, and the first support plate 30 and the second support plate 40 both cooperate with the above-mentioned connection to form a T-shape when supporting, thereby ensuring that the bottom of the grinding tube 1 can remain flat and not deformed when less material and thinner material are used, thereby ensuring uniformity and stability during grinding.

[0051] More specifically, the balancing port 60 can be used to support and balance the 15ml centrifuge tube mounted on the outer wall of the first arc plate 23 and the 5ml centrifuge tube mounted on the outer wall of the arc-shaped nozzle 24, so that after the 15ml centrifuge tube or the 5ml centrifuge tube is mounted, a portion of the top end can be abutted against the balancing port 60, thereby ensuring the stability of the 15ml centrifuge tube and the 5ml centrifuge tube during operation.

[0052] In this embodiment, the bottom end of the arc-shaped nozzle 24 is lower than the bottom end of the first arc-shaped plate 23, and the first arc-shaped plate 23 and the arc-shaped nozzle 24 have the same axial core. Specifically, the design of the lower bottom end of the arc-shaped nozzle 24 is convenient for sleeve installation of the 5ml centrifuge tube, and the design of the coaxial core of the first arc-shaped plate 23 and the arc-shaped nozzle 24 is adopted, so that after the 5ml centrifuge tube is sleeved, a part of the outer wall of the tube mouth can be arranged between the inner wall of the first arc-shaped plate 23 and the outer wall of the arc-shaped nozzle 24, so as to achieve the effect of limiting the tube mouth of the centrifuge tube, thereby avoiding the problem of misalignment in the subsequent grinding process.

[0053] In this embodiment, the top end of the grinding filter cartridge cover 4 is provided with an array of anti-skid grooves 50 distributed along the circumferential direction, which are used by the user to hold the grinding filter cartridge cover 4 and increase friction.

[0054] The working principle and use process of the utility model are as follows: before use, according to the grinding requirements of different volumes, the corresponding collection tube needs to be installed on the grinding filter tube body 3, and the collection tube can be freely selected from various commercial 5ml centrifuge tubes, 15ml centrifuge tubes, 50ml centrifuge tubes, glass tubes or culture bottles according to actual conditions; this working scheme is illustrated by a more commonly used 50ml centrifuge tube. First, the mouth of the 50ml centrifuge tube is sleeved on the outer wall of the annular plate 21, so that the 50ml centrifuge tube is concentric with the annular plate 21 but not fixed. The outer wall of the tube mouth is fixed, and a part of it is arranged between the annular plate 21 and the second arc plate 20, so as to achieve the effect of limiting the tube mouth of the 50ml centrifuge tube, and finally the 50ml centrifuge tube and the grinding and filtering structure body are placed on the corresponding test tube rack; in this way, for granular grinding materials, the operator can directly load it into the inner cavity of the grinding and filtering cartridge cover 4, and make the granular materials fall onto the bottom protrusion 11 through the bottom hole 7 during the grinding process, and if it is a soft material such as animal tissue, the operator needs to place it on the bottom protrusion 11 first.

[0055] When in use, the operator holds the grinding filter cartridge cover 4 with his hand and drives the grinding filter cartridge cover 4 to make a circular motion. When the grinding filter cartridge cover 4 makes a circular motion, the grinding filter cartridge cover 4 rotates and drives the grinding filter tube body 3 to make a circular motion around the vertical center of the 50ml centrifuge tube. During the movement, the bottom groove 9 at the bottom of the grinding filter cartridge cover 4 and the bottom protrusion 11 in the grinding tube 1 can move toward each other, so that the lateral shear force and the longitudinal extrusion force are fully and evenly ground, so as to realize the extrusion, cutting and other grinding of the material to be ground. During the grinding, the smaller particles after grinding flow around along the bottom groove 9, and are dispersed through the space between the outer wall groove 5 and the inner cavity of the grinding tube 1, so as to realize the screening of the ground material, and the screening The fully ground material can pass through the discharge port 12 driven by the circular motion of the outer wall groove 5, and enter the filter tube 2 under the action of gravity after being filtered by the filter screen 15, and then flow into the 50ml centrifuge tube through the arc tube 22, completing the grinding, filtering and collecting work. After the grinding is completed, the operator removes the grinding filter cartridge cover 4 and the grinding filter tube body 3, and stores the 50ml centrifuge tube and the ground and filtered material or uses them for other purposes; based on the above-mentioned grinding process, the insufficiently ground material is driven to shift by the larger groove of the outer wall groove 5, and under the action of gravity, flows back through the bottom groove 9 to the gap between the bottom groove 9 and the bottom protrusion 11 for re-grinding until it is fully ground, thereby preventing the insufficiently ground material from clogging the filter screen 15.

[0056] After use, when cleaning or washing is required, the operator can remove the grinding filter cartridge cover 4, then remove the fixing frame 14 from the grinding filter tube body 3, and then remove the filter screen 15 from the fixing frame 14, so that the multiple components are separated, which is conducive to cleaning or washing without dead corners, promotes thorough cleaning, and avoids the problem of residual substances reacting with other substances and affecting experimental data.

[0057] Based on the above working principle, this grinding and filtering structure has been tested and applied, and can be adapted to various types of commercialized grinding and rotating machines, so that operators can achieve automation without purchasing additional instruments, further reducing costs.

[0058] In the present utility model, the term "plurality" refers to two or more than two, unless otherwise clearly defined. The term "and / or" used in this article includes any and all combinations of one or more related listed items. The terms "install", "connect", "connect", "fix" and the like should be understood in a broad sense. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; "connection" can be a direct connection or an indirect connection through an intermediate medium. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to the specific circumstances.

[0059] It should be noted that when an element is referred to as being "assembled on", "installed on", "fixed on" or "disposed on" another element, it may be directly on the other element or there may be a central element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. The terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used herein are for illustrative purposes only and do not represent the only implementation method.

[0060] In the description of this specification, the description of the terms "one embodiment", "some embodiments", "specific embodiments", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0061] Although the embodiments of the present invention have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A grinding and filtering structure, characterized in that: The invention comprises a grinding filter tube body (3) formed integrally of a grinding tube (1) and a filter tube (2), wherein a grinding filter cartridge cover (4) is arranged in the grinding tube (1) and can rotate in its inner cavity, the bottom end of the grinding filter cartridge cover (4) is provided with an array of outer wall grooves (5) distributed in the circumferential direction, the bottom of the grinding filter cartridge cover (4) is provided with a buffer collection groove (6), the inner wall of the buffer collection groove (6) is provided with a bottom hole (7) communicating with the inner cavity of the grinding filter cartridge cover (4), and the bottom center of the grinding filter cartridge cover (4) is provided with a bottom hole (7) communicating with the inner cavity of the grinding filter cartridge cover (4). A limiting hole (8) is provided at the bottom surface of the grinding filter cartridge cover (4), a bottom groove (9) in a circular array with the limiting hole (8) as the center point is provided on the bottom surface, and a limiting protrusion (10) capable of rotatably cooperating with the limiting hole (8) is provided at the center of the inner bottom wall of the grinding tube (1), a bottom protrusion (11) in a circular array with the limiting protrusion (10) as the center point is provided on the inner bottom wall of the grinding tube (1), a discharge port (12) is provided on one side of the grinding tube (1), and a detachable filter assembly is provided at the discharge port (12); The filter tube (2) comprises an annular plate (21) connected to the bottom of the grinding tube (1), an arc-shaped tube (22) connected to both the annular plate (21) and the grinding tube (1), a first arc-shaped plate (23) connected to the outer wall of the arc-shaped tube (22), and an arc-shaped nozzle (24) connected to the bottom of the arc-shaped tube (22).

2. A grinding and filtering structure according to claim 1, characterized in that: The filter assembly comprises two overflow prevention plates (13) connected to the grinding tube (1), a fixing frame (14) clamped on the overflow prevention plates (13), and a filter screen (15) clamped on the inner side of the fixing frame (14), and the two overflow prevention plates (13) are symmetrically arranged with the lower material port (12) as a symmetry axis.

3. A grinding and filtering structure according to claim 2, characterized in that: The anti-overflow plate (13) is provided with a slot (16), a hook plate (17) is fixedly connected to the fixing frame (14) in the slot (16).

4. A grinding and filtering structure according to claim 2, characterized in that: A positioning groove (18) is provided on the inner side of the fixing frame (14), and the filter screen (15) is clamped in the positioning groove (18).

5. A grinding and filtering structure according to claim 1, characterized in that: The outer wall of the grinding filter cartridge cover (4) is provided with a drag-reducing and anti-fouling ring (19), and the drag-reducing and anti-fouling ring (19) is arranged at the top end of the outer wall groove (5).

6. A grinding and filtering structure according to claim 1, characterized in that: A second arc-shaped plate (20) is fixedly connected to the bottom of the grinding tube (1), and the second arc-shaped plate (20) has the same axis as the annular plate (21).

7. A grinding and filtering structure according to claim 6, characterized in that: A first support plate (30) and a second support plate (40) are fixedly connected to the bottom of the grinding tube (1); one side of the first support plate (30) is fixedly connected to the outer wall of the second arc-shaped plate (20); and one side of the second support plate (40) is fixedly connected to the arc-shaped tube (22).

8. A grinding and filtering structure according to claim 1, characterized in that: The bottom end of the arc-shaped through nozzle (24) is lower than the bottom end of the first arc-shaped plate (23), and the first arc-shaped plate (23) and the arc-shaped through nozzle (24) have the same axis.

9. A grinding and filtering structure according to claim 1, characterized in that: The top end of the grinding filter cartridge cover (4) is provided with anti-slip grooves (50) distributed in an array along the circumferential direction.

10. A grinding and filtering structure according to claim 7, characterized in that: A balancing opening (60) is provided at the bottom of the second support plate (40).

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