Vertical grinding cylinder and vertical sand mill

Abstract

The invention provides a vertical grinding cylinder which comprises a cylinder body, an upper cover, a lower cover and a blocking piece, a through channel is formed in the blocking piece, and the blocking piece comprises an extension part and a connecting part; the extending part extends into the cylinder body from the feeding opening, and the connecting part is located on the side, away from the cylinder body, of the blocking piece and used for being connected with an external pipeline. According to the vertical grinding cylinder provided by the invention, the vertical grinding cylinder is connected with an external pipeline through the blocking piece to inject a grinding material, meanwhile, a grinding medium can be effectively blocked from entering the external pipeline, and the vertical grinding cylinder is simple and convenient to process and relatively low in cost. Meanwhile, the invention further provides a vertical sand mill adopting the vertical grinding cylinder. Due to the fact that the external pipeline is not prone to being blocked, feeding and processing stages are smoother, and feeding and processing efficiency of grinding materials is improved.

Description

Technical Field

[0001] The invention relates to the technical field of grinding, and in particular to a vertical grinding cylinder and a vertical sand mill. Background Art

[0002] Sand mill is one of the key equipment for preparing fine materials, also known as bead mill or ball mill. Sand mill uses the grinding media to give it enough kinetic energy under the high-speed rotation of the dispersing blades, so that the grinding media and the grinding materials collide and squeeze to generate shear force, which plays a grinding role.

[0003] There are many types of sand mills. According to the layout of the grinding cylinder, they can be divided into vertical sand mills and horizontal sand mills. The vertical sand mill is mainly composed of a frame, a drive assembly, and a vertical grinding assembly. The grinding cylinder in the vertical grinding assembly is used to store grinding media and grinding materials. When the vertical sand mill is working, the grinding medium is filled in the grinding cylinder, which is made of ceramic or special materials and is in the shape of spherical particles of varying particle sizes. Then the grinding material is added from the bottom of the vertical grinding cylinder and mixed with the grinding medium.

[0004] However, the vertical sand mill in the prior art is directly connected to the bottom of the vertical grinding cylinder through a pipeline, which is very inconvenient to use. Figure 1 , Figure 1 The figure is a cross-sectional view of the vertical grinding cylinder in the prior art. When the injection of grinding material into the vertical grinding cylinder is stopped, the grinding medium will flow from the bottom of the vertical grinding cylinder into the pipeline due to gravity, thereby blocking the pipeline and seriously affecting the efficiency of injection of grinding material. Moreover, when the pipeline is blocked, it is very inconvenient to repair and replace it. During the processing, the grinding environment in the vertical grinding cylinder has high hygiene requirements, especially when grinding pharmaceutical or cosmetic materials. Frequent repair and replacement will not only affect the processing efficiency, but also pollute the grinding material, resulting in material waste. Summary of the invention

[0005] The present invention provides a vertical grinding cylinder and a vertical sand mill for solving the above-mentioned easy clogging problem, so as to improve the processing efficiency of the grinding material.

[0006] The present invention provides a vertical grinding cylinder, comprising a cylinder body, an upper cover, a lower cover and a barrier, wherein the upper cover is arranged on one side of the cylinder body and has a mounting opening at the center; the lower cover, the cylinder body and the upper cover together form a receiving space, and the lower cover is provided with a feed port; a through passage is provided inside the barrier, and the barrier comprises an extension portion and a connecting portion; the extension portion extends from the feed port into the cylinder body and is located in the receiving space; the connecting portion is located on the side of the barrier away from the cylinder body and is used for connecting an external pipeline.

[0007] The present invention provides a vertical grinding machine, comprising a frame, a driving assembly and a vertical grinding assembly, wherein the driving assembly is arranged on the frame, and the vertical grinding assembly is arranged below the driving assembly; the vertical grinding assembly comprises a grinding rotor and a vertical grinding cylinder, wherein the grinding rotor is accommodated in the vertical grinding cylinder; the vertical grinding cylinder comprises a cylinder body, an upper cover, a lower cover and a barrier, wherein the upper cover is arranged on one side of the cylinder body and a mounting opening is opened at the center, and the grinding rotor is connected to the driving assembly through the mounting opening; the lower cover, the cylinder body and the upper cover together form a receiving space, and the lower cover is provided with a feed inlet; a through channel is provided inside the barrier, and the barrier comprises an extension portion and a connecting portion; the extension portion extends from the feed inlet into the cylinder body and is located in the receiving space; the connecting portion is located on the side of the barrier away from the cylinder body and is used for connecting an external pipeline.

[0008] Compared with the prior art, the vertical grinding cylinder provided by the present invention can effectively block the grinding media from entering the external pipe while being connected to the external pipe through the setting of the blocking member to inject the grinding material. During the grinding process, the grinding media are mainly gathered at the bottom and side walls of the vertical grinding cylinder under the dual effects of gravity and centrifugal force. Since the extension part extends from the feed port into the cylinder body, it is equivalent to forming a column with an opening. The grinding media will be blocked by the extension part on the outer peripheral side of the channel, and the probability of entering the channel will be greatly reduced. Accordingly, the grinding media cannot enter the pipe in large quantities, and will not easily cause blockage of the external pipe.

[0009] In addition, the vertical grinding cylinder has a simple design structure, and the blocking member can block the grinding medium through the extension portion, which is easy to process and has low cost.

[0010] The vertical sand mill using the vertical grinding drum of the present invention is less likely to cause blockage of the external pipeline, and is smoother in the feeding and processing stages, thereby improving the feeding and processing efficiency of the grinding material. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] In order to more clearly illustrate the technical solutions in 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. For those skilled in the art, other drawings can be obtained based on these drawings without creative work, among which: Figure 1 is a cross-sectional view of the vertical grinding cylinder in the prior art; Figure 2 It is a three-dimensional structural schematic diagram of the vertical sand mill provided by the present invention; Figure 3 is a cross-sectional view of a first embodiment of the vertical grinding cylinder provided by the present invention; Figure 4 is a cross-sectional view of a second embodiment of the vertical grinding cylinder provided by the present invention; Figure 5 yes Figure 4 An enlarged cross-sectional view of the barrier member shown; Figure 6 yes Figure 4 The three-dimensional exploded schematic diagram of the barrier member shown; Figure 7 is an enlarged cross-sectional view of the barrier member in the third embodiment of the vertical grinding cylinder provided by the present invention; Figure 8 yes Figure 7 The three-dimensional exploded schematic diagram of the barrier member shown; and Fig. 9 It is an enlarged cross-sectional view of the barrier member of the fourth embodiment of the vertical grinding cylinder provided by the present invention. DETAILED DESCRIPTION

[0012] 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.

[0013] It should be noted that all directional indications in the embodiments of the present invention (such as up, down, left, right, front, back, etc.) are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0014] In addition, in the present invention, descriptions such as "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" or "second" may explicitly or implicitly include at least one of the features. In the description of the present invention, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0015] In the present invention, unless otherwise clearly specified and limited, the terms "connection", "fixation", etc. should be understood in a broad sense. For example, "fixation" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0016] In addition, the technical solutions between the various embodiments of the present invention can be combined with each other, but it must be based on the fact that ordinary technicians in the field can implement it. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0017] See also Figure 2 The vertical sand mill 100 includes a frame 1, a drive assembly 3 and a vertical grinding assembly 5. The drive assembly 3 is arranged on the frame 1, and the vertical grinding assembly 5 is arranged below the drive assembly 3. In this embodiment, the drive assembly 3 and the vertical grinding assembly 5 are both arranged on the frame 1, and the drive assembly 3 and the vertical grinding assembly 5 are installed and fixed by the frame 1. Since the overall gravity of the drive assembly 3 and the vertical grinding assembly 5 is relatively large during the actual production and processing process, the vertical grinding assembly 5 cannot be fixed only by the drive assembly 3, so it is necessary to provide support for the vertical grinding assembly 5 separately. Of course, the frame 1 that provides support for the drive assembly 3 and the vertical grinding assembly 5 can be set as a whole, or can be set separately at intervals, which is not limited here.

[0018] In addition, the specific structure of the frame 1, and the specific layout of the drive assembly 3 and the vertical grinding assembly 5 are not limited here. As in the present embodiment, the drive assembly 3 can be arranged horizontally on the top of the frame 1, and the vertical grinding assembly 5 can be arranged on one side of the frame 1, or the vertical grinding assembly 5 can be arranged in the middle position of the frame 1, as long as it is a layout for vertical processing.

[0019] The vertical grinding assembly 5 includes a grinding rotor 6 and a vertical grinding cylinder 7. The grinding rotor 6 is connected to the driving assembly 3 and is accommodated in the vertical grinding cylinder 7. The vertical grinding cylinder 7 is mainly used to inject and store grinding materials (not shown) and grinding media 200. The grinding rotor 6 rotates at a high speed, so that the grinding materials are ground by the grinding media 200. The structure of the grinding rotor 6 is not further limited here, and existing products on the market can be selected and connected to the driving assembly 3. Of course, the driving assembly 3 can choose to set a long axis on the motor (not shown) to realize the integrated setting of the grinding rotor 6 and the driving assembly 3, or it can be connected by setting a transmission member (not shown) between the motor and the grinding rotor 6. Among them, the transmission member can be a rigid transmission structure or a flexible transmission structure, such as a coupling transmission, a gear transmission or a pulley transmission, etc., which will not be described in detail here.

[0020] Please refer to Figure 3 , Figure 3 7 is a cross-sectional view of the first embodiment of the vertical grinding cylinder 7 provided by the present invention. The vertical grinding cylinder 7 includes a cylinder body 71, an upper cover 73, a lower cover 75 and a barrier 77. The upper cover 73 is arranged on one side of the cylinder body 71, and a mounting port 731 is opened at the center, and the grinding rotor 6 is connected to the driving assembly 3 through the mounting port 731. The structure of the mounting port 731 is arranged corresponding to the grinding rotor 6 to ensure the sealing effect of the vertical grinding cylinder 7, which is not limited here.

[0021] The lower cover 75, the barrel 71 and the upper cover 73 together form a receiving space 79, and the lower cover 75 is provided with a feed port 751. During the processing, the grinding medium 200 and the grinding material are both located in the receiving space 79, and the receiving space 79 is sealed to prevent leakage of the grinding medium 200 and the grinding material, and also ensure that the entire processing environment meets the grinding material processing requirements.

[0022] A through channel 771 is provided inside the barrier 77. The barrier 77 includes an extension portion 773 and a connection portion 775. The extension portion 773 extends from the feed port 751 into the cylinder 71 and is located in the receiving space 79. The connection portion 775 is located on the side of the barrier 77 away from the cylinder 71 and is used to connect the external pipe 300. The channel 771 is mainly used to conduct the grinding material, and the grinding material enters the receiving space 79 from the external pipe 300 and the channel 771. Due to the protruding arrangement of the extension portion 773 in the barrier 77, the grinding media 200 are distributed at the bottom of the vertical grinding cylinder 7, that is, in the direction close to the lower cover 75. It is difficult for the grinding media 200 to cross the extension portion 773 and enter the channel 771, thereby achieving a blocking effect.

[0023] It should be emphasized here that the height of the extension portion 773 protruding relative to the bottom cover is generally between 1.5 cm and 20 cm. If it is lower than 1.5 cm, it is difficult to achieve effective blocking, and the grinding medium 200 is more likely to pass over the extension portion 773 and enter the channel 771; if it is higher than 20 cm, it will affect the setting of the grinding rotor 6 and increase the processing cost. This setting distance range not only saves costs and does not affect the setting of other structures, but also can effectively block the grinding medium 200, which is simple and convenient. In addition, the structure of the extension portion 773 can be a cylinder, a square cylinder or other cylindrical structure. Here, a cylindrical shape is preferred, which is conducive to processing and production, and each surface is in uniform contact with the grinding medium 200, reducing wear, thereby increasing the service life of the extension portion 773.

[0024] Please continue to refer to Figure 4 , Figure 5 and Figure 6 , Figure 4 is a cross-sectional view of a second embodiment of the vertical grinding cylinder 7 provided by the present invention, Figure 5 yes Figure 4 The enlarged cross-sectional view of the barrier member 77 shown, Figure 6 yes Figure 4The blocking member 77 is a three-dimensional exploded schematic diagram shown in FIG. The blocking member 77 further includes a one-way valve 777, which is disposed in the extension portion 773 or between the extension portion 773 and the connecting portion 775, and is used to one-way control the injection of grinding materials into the receiving space 79. In the second embodiment, the one-way valve 777 is disposed between the extension portion 773 and the connecting portion 775. Of course, in another embodiment, the one-way valve 777 can be directly disposed in the extension portion 773. The blocking member 77 is provided with the one-way valve 777, and cooperates with the extension portion 773 to more effectively block the grinding media 200 and prevent the passage 771 from being blocked. Compared with the one-way valve 777 being provided alone, a large amount of the grinding media 200 will not be accumulated on the one-way valve 777 through the blocking of the extension portion 773, so that it is more labor-saving to control the conduction of the one-way valve 777.

[0025] The one-way valve 777 includes a first division 7771, a second division 7773 and a movable part 7775. The first division 7771 is provided with a first flow channel 7772 relative to the channel 771; the second division 7773 is provided below the first division 7771, and the second division 7773 is provided with a second flow channel 7774 relative to the channel 771; the movable part 7775 is provided in the channel 771, and cooperates with the first division 7771 and the second division 7773 to control the conduction state between the first flow channel 7772 and the second flow channel 7774, or controls the conduction state between the channel 771 and the receiving space 79.

[0026] The one-way valve 777 can control the conduction state of the channel 771 by setting the first subsection 7771, the second subsection 7773 and the movable part 7775. When setting the movable part 7775, the structural dimensions of the first flow channel 7772 and the second flow channel 7774 can be set relative to the movable part 7775 to ensure that when the movable part 7775 is controlled to move between the first subsection 7771 and the second subsection 7773, the movable part 7775 switches between blocking one of the flow channels and conducting two flow channels. For example, when the movable part 7775 abuts against the second subsection 7773, the second flow channel 7774 can be blocked. When the movable part 7775 moves to abut against the first subsection 7771, the first flow channel 7772 and the second flow channel 7774 are conducted at the same time, thereby achieving the effect of single-phase conduction. This configuration is simple and practical, and can allow the channel 771 to smoothly pass the grinding material without causing blockage in the channel 771 .

[0027] It should be noted here that the second division 7773 and the connecting portion 775, and the first division 7771 and the extension portion 773 can be separately arranged or integrated. For example, the second division 7773 and the connecting portion 775 are integrated, and / or the first division 7771 and the extension portion 773 are integrated. The integrated arrangement is mainly beneficial to improving the sealing effect and can reduce the risk of leakage at the connection between the two. Correspondingly, the extension portion 773 can also be integrated with the lower cover 75, so that there is a better sealing effect between the extension portion 773 and the lower cover 75. The integrated arrangement is not only beneficial to the sealing effect, but also reduces the parts that need to be disassembled and assembled, greatly simplifying the disassembly and assembly steps.

[0028] In the second embodiment, the movable part 7775 is a spherical structure, the second division 7773 and the first division 7771 cooperate with each other to form an active cavity 7776, and the movable part 7775 is accommodated in the active cavity 7776; the first division 7771 is provided with an arc-shaped ridge 77711, and the ridge 77711 gradually approaches the center from bottom to top, and the second division 7773 is provided with a concave arc-shaped first limiting groove 77731, and the first limiting groove 77731 gradually approaches the center from top to bottom; when the movable part 7775 is in a stationary state, it is tightly fitted with the first limiting groove 77731, and the first flow channel 7772 and the second flow channel 7774 are closed; when the grinding material is injected, the movable part 7775 is tightly fitted with the ridge 77711, and the first flow channel 7772 and the second flow channel 7774 are connected.

[0029] In addition, a sealing ring 7777 is provided between the first sub-section 7771 and the second sub-section 7773. Since the movable part 7775 is provided in the movable cavity 7776, in order to solve the installation problem of the movable part 7775, in the second embodiment, the first sub-section 7771 and the second sub-section 7773 are provided separately. By providing the sealing ring 7777, it is ensured that the first sub-section 7771 and the second sub-section 7773 are closely fitted to avoid leakage of the grinding flow flowing through the first flow channel 7772 and the second flow channel 7774. Of course, if the second sub-section 7773 and the connecting part 775 and the first sub-section 7771 and the extending part 773 are also provided separately, the sealing ring 7777 is also provided at the connection between the two to improve the overall sealing effect of the barrier 77.

[0030] The one-way valve 777 sets a limit on the movable part 7775 through the first sub-part 7771 and the second sub-part 7773. The structural design is simple and ingenious. One-way conduction can be achieved without manual or electric control of the movable part 7775. The specific implementation principle is described as follows: When the grinding material is not injected or is being processed, the movable part 7775 is tightly fitted with the second sub-portion 7773 due to the effect of gravity; the first limiting groove 77731 is a concave arc structure, and the first limiting groove 77731 gradually approaches the center from top to bottom, which can just achieve the fit between the second sub-portion 7773 and the movable part 7775, and no matter how the movable part 7775 rotates and moves, it can be tightly fitted without any relative position relationship; at this time, the second flow channel 7774 is blocked by the movable part 7775, and the grinding medium 200 cannot enter the external pipe 300 through the channel 771, and it will also be affected by gravity, pressing the movable part 7775, so that the movable part 7775 and the second sub-portion 7773 fit more tightly; When the grinding material needs to be injected, due to the impact force of the inflow of the grinding material, the movable part 7775 will be pushed by the grinding material to the point of contact with the first division 7771; the arc-shaped ridge 77711 of the first division 7771 can not only be used to limit the movable part 7775 from continuing to move upward, but also guide the movable part 7775 to move toward the center, thereby making the first flow channel 7772 and the second flow channel 7774 conductive, and the grinding material flows through the second flow channel 7774 and the first flow channel 7772 into the receiving space 79.

[0031] It should be noted that the first flow channel 7772 can be two or more and spaced apart from each other. In this embodiment, the first subdivision 7771 is provided with a plurality of first through holes 77715, which are arranged in the central area and the circumference of the central area. This arrangement can not only effectively support the position limiting of the movable part 7775, but also increase the speed of the grinding material passing as much as possible, thereby improving the feeding efficiency. In addition, the movable part 7775 is set as a spherical structure, which is not only convenient for cooperating with the convex ridge 77711 and the first limiting groove 77731 to realize the conduction of the channel 771, but also because the spherical structure is wear-resistant and can extend its service life.

[0032] Please continue reading Figure 7 and Figure 8 , Figure 7 is an enlarged cross-sectional view of the barrier member 77 in the third embodiment of the vertical grinding cylinder 7 provided by the present invention, Figure 8 yes Figure 7The blocking member 77 is shown in a three-dimensional exploded schematic diagram. The movable member 7775 is a piston structure. The first subdivision 7771 is provided with a second limiting groove 77713. The movable member 7775 includes a fixed block 77751, a screw rod 77753 and a stopper 77755. The fixed block 77751 is fixedly arranged in the first subdivision 7771, the second subdivision 7773 or between the first subdivision 7771 and the second subdivision 7773. The screw rod 77753 is movably connected to the fixed block 77751 and moves up and down along the channel 771 relative to the fixed block 77751. The stopper 77755 is arranged at one end of the screw rod 77753 relative to the second limiting groove 77713 and is located in the first flow channel 7772.

[0033] The one-way valve 777 limits the movable part 7775 through the first sub-part 7771 and / or the second sub-part 7773, and the one-way conduction control can be realized without manual or electric control; moreover, the movable part 7775 realizes the connection of the stopper 77755 through the screw rod 77753, and will not occupy the channel 771 too much. The first flow channel 7772 and the second flow channel 7774 can be expanded as much as possible, thereby increasing the flow rate of the grinding material and further improving the feeding efficiency. The specific implementation principle is described as follows: When the grinding material is not injected or is being processed, the movable part 7775 is in a stationary state, the stopper 77755 is tightly fitted with the second limiting groove 77713, and the channel 771 and the receiving space 79 are closed; at this time, the first flow channel 7772 is blocked by the movable part 7775, and the grinding medium 200 cannot enter the external pipe 300 through the channel 771, and is also affected by gravity, pressing the movable part 7775, so that the movable part 7775 and the first sub-portion 7771 are more tightly fitted; When the grinding material needs to be injected, the blocking block 77755 and the screw rod 77753 move upward relative to the fixed block 77751, the channel 771 is connected to the receiving space 79, and the grinding material flows through the second flow channel 7774 and the first flow channel 7772 into the receiving space 79.

[0034] It should be noted that the size structure of the second limiting groove 77713 corresponds to the block 77755, ensuring that the block 77755 can block the first flow channel 7772, and no specific restrictions are made here; the setting position of the fixed block 77751 can be directly fixedly connected to the first subsection 7771, or fixedly connected to the second subsection 7773, or arranged between the first subsection 7771 and the second subsection 7773, for limiting the block 77755 and the screw rod 77753, and preventing the block 77755 and the screw rod 77753 from continuing to move upward along the channel 771. In this embodiment, the fixed block 77751 includes a sheet-like structure 77757, and a second through hole 77759 is opened in the middle of the sheet-like structure 77757, so that the fixed block 77751 can increase the speed of the grinding material flowing through while fully fixing the force.

[0035] In addition, in the third embodiment, different from the second embodiment, the first sub-portion 7771 and the second sub-portion 7773 may also be integrated to enhance the sealing effect of the barrier member 77 .

[0036] Please continue reading Fig. 9 , Fig. 9 7 is an enlarged cross-sectional view of the barrier member 77 in the fourth embodiment of the vertical grinding barrel 7 provided by the present invention. In order to achieve a better barrier effect, the barrier member 77 further includes a filter portion 779, and the filter portion 779 is disposed above the extension portion 773. Since the extension portion 773 extends upward from the lower cover 75, the grinding medium 200 may more or less enter the channel 771. However, by arranging the filter portion 779 above the extension portion 773, the grinding medium 200 that enters the channel 771 from top to bottom due to gravity can be further blocked.

[0037] The specific structure of the filter part 779 is not specifically limited here, and a brief description is given by taking the fourth embodiment as an example.

[0038] First, as to the connection position, the filter portion 779 can be connected to the extension portion 773, or can be connected to the lower cover 75, extending from bottom to top; it can also be connected to the grinding rotor 6, extending from top to bottom; or it can be a combination of two or three methods to ensure that the filter portion 779 is positioned relative to the extension portion 773.

[0039] Secondly, for the filtering structure, the filtering part 779 can be set in a mesh, strip shape or a way of not having holes on the side directly above the extension part 773 to ensure that the grinding medium 200 cannot directly enter the channel 771 from top to bottom through the extension part 773.

[0040] Finally, regarding the selection of materials, the portion of the filter portion 779 directly above the extension portion 773 can be made of either rigid material or flexible material, but the filtering effect needs to be ensured. For example, when the portion directly above the extension portion 773 is made of a flexible material, a stretching structure needs to be provided around the flexible material to ensure that the flexible material can be fully expanded without positional displacement or material curling as the grinding material is processed.

[0041] The above descriptions are merely embodiments of the present invention and are not intended to limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made using the contents of the present invention specification and drawings, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A vertical grinding cylinder, characterized in that: include: Cylinder; An upper cover, which is arranged on one side of the cylinder and has a mounting opening at the center; A lower cover, wherein the lower cover, the cylinder body and the upper cover together form a receiving space, and the lower cover is provided with a feed port; and A barrier, wherein a through passage is provided inside the barrier, and the barrier comprises: An extension portion, the extension portion extends from the feed port into the cylinder and is located in the receiving space; and A connecting portion, the connecting portion is located on a side of the blocking member away from the cylinder and is used for connecting to an external pipeline.

2. The vertical grinding cylinder according to claim 1, characterized in that: The barrier member further comprises a one-way valve, which is arranged in the extension portion or between the extension portion and the connecting portion, and is used for one-way control of injecting the grinding material into the receiving space.

3. The vertical grinding cylinder according to claim 2, characterized in that: The one-way valve comprises: a first subdivision, wherein the first subdivision is provided with a first flow passage relative to the channel; A second sub-section, the second sub-section is disposed below the first sub-section, and the second sub-section is provided with a second flow channel opposite to the channel; and A movable part is arranged in the channel and cooperates with the first sub-part and the second sub-part to control the conduction state between the first flow channel and the second flow channel, or controls the conduction state between the channel and the receiving space.

4. The vertical grinding cylinder according to claim 3, characterized in that: The movable member is a spherical structure, the second sub-portion cooperates with the first sub-portion to form a movable cavity, and the movable member is accommodated in the movable cavity; The first sub-portion is provided with an arc-shaped convex ridge, and the convex ridge gradually approaches the center from bottom to top, and the second sub-portion is provided with an inwardly concave arc-shaped first limiting groove, and the first limiting groove gradually approaches the center from top to bottom; When the movable part is in a stationary state, it is tightly fitted with the first limiting groove, and the first flow channel and the second flow channel are closed; when the grinding material is injected, the movable part is tightly fitted with the convex edge, and the first flow channel and the second flow channel are connected.

5. The vertical grinding cylinder according to claim 4, characterized in that: A sealing ring is provided between the first sub-portion and the second sub-portion.

6. The vertical grinding cylinder according to claim 3, characterized in that: The movable part is a piston structure, the first sub-part is provided with a second limiting groove, and the movable part comprises: a fixed block, the fixed block being fixedly disposed at the first sub-portion, the second sub-portion, or between the first sub-portion and the second sub-portion; a screw rod, the screw rod being movably connected to the fixed block and being movable up and down along the channel relative to the fixed block; and A block, the block is arranged at one end of the screw rod relative to the second limiting groove and is located in the first flow channel; when the movable part is in a stationary state, the block is tightly fitted with the second limiting groove, and the channel and the receiving space are closed; when the grinding material is injected, the block and the screw rod move upward relative to the fixed block, and the channel and the receiving space are connected.

7. The vertical grinding cylinder according to claim 3, characterized in that: The second section is integrated with the connecting section, and / or the first section is integrated with the extending section.

8. The vertical grinding cylinder according to claim 1, characterized in that: The extension portion is integrated with the lower cover.

9. The vertical grinding cylinder according to claim 1, characterized in that: The barrier element further includes a filter portion, and the filter portion is disposed above the extension portion.

10. A vertical sand mill, characterized in that: include: frame; A driving assembly, wherein the driving assembly is arranged on the frame; and A vertical grinding assembly, the vertical grinding assembly is arranged below the driving assembly, and the vertical grinding assembly includes: a grinding rotor, the grinding rotor being connected to the driving assembly through the mounting port; and The vertical grinding cylinder according to claim 1 to claim 9, wherein the grinding rotor is accommodated in the vertical grinding cylinder.

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