A vertical grinding barrel and a vertical sand mill

Abstract

The vertical grinding cylinder comprises a cylinder body, an upper cover, a lower cover and a barrier, the barrier is internally provided with a through channel, and the barrier comprises an extension part and a connecting part; the extension part extends from the feeding port to the inside of the cylinder body, and the connecting part is located on the side of the barrier away from the cylinder body and is used for connecting an external pipeline. The vertical grinding cylinder provided by the application can realize the connection with the external pipeline and the injection of grinding materials at the same time through the setting of the barrier, can effectively block the grinding medium from entering the external pipeline, and is simple to process and low in cost. Meanwhile, the application also provides a vertical sand mill adopting the vertical grinding cylinder. Since the external pipeline is not easy to be blocked, the feeding and processing stages are more smooth, so that the feeding and processing efficiency of the grinding materials is improved.

Description

Technical Field

[0001] This invention relates to the field of grinding technology, and in particular to a vertical grinding cylinder and a vertical sand mill. Background Technology

[0002] A sand mill, also known as a bead mill or ball mill, is a key piece of equipment in the preparation of fine materials. It utilizes the high-speed rotation of the grinding media by the dispersing blades to impart sufficient kinetic energy, causing the grinding media and the material to collide and compress, generating shear force and thus achieving the grinding effect.

[0003] There are many types of sand mills. Based on the arrangement of the grinding cylinders, they can be divided into vertical sand mills and horizontal sand mills. A vertical sand mill mainly consists of a frame, drive assembly, and vertical grinding assembly. The grinding cylinder in the vertical grinding assembly stores the grinding media and grinding materials. When the vertical sand mill is working, the grinding cylinder is filled with grinding media, made of ceramic or special materials, in the form of spherical particles of varying sizes. Then, the grinding materials are added from the bottom of the vertical grinding cylinder and mixed with the grinding media.

[0004] However, existing vertical sand mills connect directly to the bottom of the vertical grinding cylinder via pipes, making them very inconvenient to use. (See also...) Figure 1 , Figure 1 This is a cross-sectional view of the existing vertical grinding cylinder. When the injection of grinding material into the vertical grinding cylinder stops, due to gravity, the grinding media will flow from the bottom of the cylinder into the pipe, thus clogging the pipe and severely affecting the efficiency of grinding material injection. Moreover, when pipe blockage occurs, maintenance and replacement are very inconvenient. Because the grinding environment inside the vertical grinding cylinder has high hygiene requirements during processing, especially when grinding pharmaceutical or cosmetic materials, frequent maintenance and replacement not only affect processing efficiency but also contaminate the grinding material, leading to material waste. Summary of the Invention

[0005] This invention provides a vertical grinding cylinder and a vertical sand mill to solve the above-mentioned problem of easy clogging, so as to improve the processing efficiency of grinding materials.

[0006] This invention provides a vertical grinding cylinder, comprising a cylinder body, an upper cover, a lower cover, and a barrier. The upper cover is disposed on one side of the cylinder body and has an installation port at its center. The lower cover, together with the cylinder body and the upper cover, forms a receiving space, and the lower cover has a feed inlet. The barrier has a through channel inside and includes an extension portion and a connecting portion. The extension portion extends from the feed inlet into the cylinder body and is located within the receiving space. The connecting portion is located on the side of the barrier away from the cylinder body and is used to connect to an external pipe.

[0007] This invention provides a vertical grinding machine, including a frame, a drive assembly, and a vertical grinding assembly. The drive assembly is disposed on the frame, and the vertical grinding assembly is positioned below the drive assembly. The vertical grinding assembly includes a grinding rotor and a vertical grinding cylinder, with the grinding rotor housed within the vertical grinding cylinder. The vertical grinding cylinder includes a cylinder body, an upper cover, a lower cover, and a barrier. The upper cover is located on one side of the cylinder body and has a mounting opening at its center. The grinding rotor is connected to the drive assembly through the mounting opening. The lower cover, the cylinder body, and the upper cover together form a receiving space, and the lower cover has a feed inlet. The barrier has a through channel inside and includes an extension portion and a connecting portion. The extension portion extends from the feed inlet into the cylinder body and is located within the receiving space. The connecting portion is located on the side of the barrier away from the cylinder body and is used to connect to an external pipe.

[0008] Compared with existing technologies, the vertical grinding cylinder provided by this invention, through the setting of the barrier component, achieves effective prevention of grinding media from entering the external pipeline while simultaneously connecting to and injecting grinding materials. During the grinding process, the grinding media, under the combined action of gravity and centrifugal force, mainly accumulates at the bottom and side walls of the vertical grinding cylinder. Since the extended portion extends from the feed inlet into the cylinder body, it essentially forms an open column. The grinding media is blocked by the extended portion on the outer periphery of the channel, greatly reducing the probability of it entering the channel. Consequently, the grinding media cannot enter the pipeline in large quantities, thus preventing easy blockage of the external pipeline.

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

[0010] The vertical sand mill of the present invention, which uses the vertical grinding cylinder, is less prone to clogging of the external pipes, resulting in smoother feeding and processing during the feeding and processing stages, thereby improving the feeding and processing efficiency of the grinding materials. Attached Figure Description

[0011] To more clearly illustrate the technical solutions in the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. 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 effort, wherein:

[0012] Figure 1 This is a cross-sectional view of the vertical grinding cylinder in the prior art;

[0013] Figure 2This is a three-dimensional structural schematic diagram of the vertical sand mill provided by the present invention;

[0014] Figure 3 This is a cross-sectional view of the first embodiment of the vertical grinding cylinder provided by the present invention;

[0015] Figure 4 This is a cross-sectional view of the second embodiment of the vertical grinding cylinder provided by the present invention;

[0016] Figure 5 yes Figure 4 The enlarged cross-sectional view of the barrier shown is shown.

[0017] Figure 6 yes Figure 4 The diagram shown is an exploded three-dimensional view of the barrier component.

[0018] Figure 7 This is an enlarged cross-sectional view of the barrier element in the third embodiment of the vertical grinding cylinder provided by the present invention;

[0019] Figure 8 yes Figure 7 The exploded three-dimensional schematic diagram of the barrier element shown; and

[0020] Figure 9 This is an enlarged cross-sectional view of the barrier element in the fourth embodiment of the vertical grinding cylinder provided by the present invention. Detailed Implementation

[0021] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of them. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0022] It should be noted that all directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of the present invention are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indication will also change accordingly.

[0023] Furthermore, in this invention, descriptions involving "first," "second," etc., are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this invention, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0024] In this invention, unless otherwise explicitly specified and limited, the terms "connection," "fixed," etc., should be interpreted broadly. For example, "fixed" can mean a fixed connection, a detachable connection, or an integral part; it can mean a mechanical connection or an electrical connection; it can mean a direct connection or an indirect connection through an intermediate medium; it can mean the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0025] Furthermore, the technical solutions of the various embodiments of the present invention can be combined with each other, but only if they are based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such combination of technical solutions does not exist and is not within the scope of protection claimed by the present invention.

[0026] Please see 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 disposed on the frame 1, and the vertical grinding assembly 5 is disposed below the drive assembly 3. In this embodiment, both the drive assembly 3 and the vertical grinding assembly 5 are disposed on the frame 1, and the drive assembly 3 and the vertical grinding assembly 5 are fixed by the frame 1. Because the overall weight of the drive assembly 3 and the vertical grinding assembly 5 is relatively large during actual production and processing, it is impossible to fix the vertical grinding assembly 5 solely by the drive assembly 3. Therefore, it is necessary to provide separate support for the vertical grinding assembly 5. Of course, the frame 1 providing support for the drive assembly 3 and the vertical grinding assembly 5 can be integrally set or separately set at intervals; no limitation is made here.

[0027] Furthermore, the specific structure of the frame 1, and its specific layout with the drive assembly 3 and the vertical grinding assembly 5 are not limited here. As in this embodiment, the drive assembly 3 can be horizontally disposed at the top of the frame 1 and the vertical grinding assembly 5 can be disposed on one side of the frame 1. Alternatively, the vertical grinding assembly 5 can be disposed in the middle of the frame 1. As long as it is a vertical processing layout, it is acceptable.

[0028] The vertical grinding assembly 5 includes a grinding rotor 6 and a vertical grinding cylinder 7. The grinding rotor 6 is connected to the drive assembly 3 and is housed within the vertical grinding cylinder 7. The vertical grinding cylinder 7 is mainly used for injecting and storing grinding materials (not shown) and grinding media 200. The grinding rotor 6 rotates at high speed, thereby grinding the grinding materials through the grinding media 200. The structure of the grinding rotor 6 is not further limited here; existing products on the market can be used, and it can be connected to the drive assembly 3. Of course, the drive assembly 3 can be configured by setting a long shaft on the motor (not shown) to achieve an integrated design of the grinding rotor 6 and the drive assembly 3, or it can be connected by setting a transmission component (not shown) between the motor and the grinding rotor 6. The transmission component can be a rigid transmission structure or a flexible transmission structure, such as a coupling drive, gear drive, or belt pulley drive, etc., which will not be elaborated here.

[0029] Please refer to the following: Figure 3 , Figure 3 This 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 member 77. The upper cover 73 is disposed on one side of the cylinder body 71, and has a mounting port 731 at its center. The grinding rotor 6 is connected to the drive assembly 3 through the mounting port 731. The structure of the mounting port 731 corresponds to that of the grinding rotor 6 to ensure the sealing effect of the vertical grinding cylinder 7, but this is not limited here.

[0030] The lower cover 75, together with the cylinder 71 and the upper cover 73, forms a receiving space 79, and the lower cover 75 is provided with a feed inlet 751. During processing, the grinding media 200 and the grinding material are both located within the receiving space 79, which is a sealed space to prevent leakage of the grinding media 200 and the grinding material, and to ensure that the entire processing environment meets the processing requirements of the grinding material.

[0031] A through channel 771 is provided inside the barrier 77. The barrier 77 includes an extension portion 773 and a connecting portion 775. The extension portion 773 extends from the feed inlet 751 into the cylinder 71 and is located within the receiving space 79. The connecting portion 775 is located on the side of the barrier 77 away from the cylinder 71 and is used to connect to the external pipe 300. The channel 771 is mainly used to guide the grinding material. 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 medium 200 is distributed at the bottom of the vertical grinding cylinder 7, that is, in the direction close to the lower cover 75. The grinding medium 200 is difficult to cross the extension portion 773 to enter the channel 771, thereby achieving the barrier effect.

[0032] It is important to note that the height of the extension portion 773 protruding from the bottom cover is generally between 1.5cm and 20cm. If it is less than 1.5cm, it is difficult to achieve effective blocking, and the grinding medium 200 is more likely to pass through the extension portion 773 and enter the channel 771. If it is greater than 20cm, it will affect the setting of the grinding rotor 6 and increase processing costs. This setting distance range not only saves costs and does not affect the setting of other structures, but also effectively blocks 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 structures. Here, a cylindrical shape is preferred, which is beneficial to processing and production, and all surfaces are in uniform contact with the grinding medium 200, reducing wear and thus increasing the service life of the extension portion 773.

[0033] Please continue to refer to Figure 4 , Figure 5 and Figure 6 , Figure 4 This is a cross-sectional view of the 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 77 shown is shown. Figure 6 yes Figure 4The diagram shows an exploded perspective view of the barrier 77. The barrier 77 also includes a one-way valve 777, which is disposed within the extension portion 773 or between the extension portion 773 and the connecting portion 775, for one-way control of the injection of abrasive material into the receiving space 79. In a 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 within the extension portion 773. By providing the one-way valve 777 in conjunction with the extension portion 773, the barrier 77 more effectively blocks the abrasive medium 200, preventing blockage of the channel 771. Compared to a separate one-way valve 777, the blocking effect of the extension portion 773 prevents the accumulation of a large amount of abrasive medium 200 on the one-way valve 777, thus making it easier to control the opening of the one-way valve 777.

[0034] The one-way valve 777 includes a first portion 7771, a second portion 7773, and a movable member 7775. The first portion 7771 is provided with a first flow channel 7772 relative to the channel 771. The second portion 7773 is located below the first portion 7771 and is provided with a second flow channel 7774 relative to the channel 771. The movable member 7775 is located in the channel 771 and cooperates with the first portion 7771 and the second portion 7773 to control the conduction state between the first flow channel 7772 and the second flow channel 7774, or to control the conduction state between the channel 771 and the receiving space 79.

[0035] The one-way valve 777, by configuring the first portion 7771, the second portion 7773, and the movable member 7775, can control the conduction state of the channel 771. When configuring the movable member 7775, the structural dimensions of the first flow channel 7772 and the second flow channel 7774 can be set relative to the movable member 7775 to ensure that when the movable member 7775 moves between the first portion 7771 and the second portion 7773, the movable member 7775 switches between blocking one flow channel and opening both flow channels. For example, when the movable member 7775 abuts against the second portion 7773, it can block the second flow channel 7774; when the movable member 7775 moves to abut against the first portion 7771, the first flow channel 7772 and the second flow channel 7774 are simultaneously open, thereby achieving a single-phase conduction effect. This setup is simple and practical, allowing the grinding material to pass smoothly through the channel 771 without causing blockage.

[0036] It should be noted that the second portion 7773 and the connecting portion 775, and the first portion 7771 and the extension portion 773, can be separately configured or integrated. For example, the second portion 7773 and the connecting portion 775 can be integrated, and / or the first portion 7771 and the extension portion 773 can be integrated. The integrated configuration primarily improves the sealing effect and reduces the risk of leakage at the connection point. Correspondingly, the extension portion 773 can also be integrated with the lower cover 75, resulting in a better seal between the extension portion 773 and the lower cover 75. The integrated configuration not only improves the sealing effect but also reduces the number of parts that need to be disassembled, greatly simplifying the disassembly and assembly process.

[0037] In the second embodiment, the movable component 7775 has a spherical structure. The second portion 7773 and the first portion 7771 cooperate to form a movable cavity 7776, and the movable component 7775 is housed in the movable cavity 7776. The first portion 7771 is provided with an arc-shaped protrusion 77711, which gradually approaches the center from bottom to top. The second portion 7773 is provided with a concave arc-shaped first limiting groove 77731, which gradually approaches the center from top to bottom. In the static state, the movable component 7775 is tightly fitted with the first limiting groove 77731, and the first flow channel 7772 and the second flow channel 7774 are closed. In the state of injecting the grinding material, the movable component 7775 is tightly fitted with the protrusion 77711, and the first flow channel 7772 and the second flow channel 7774 are connected.

[0038] Furthermore, a sealing ring 7777 is provided between the first portion 7771 and the second portion 7773. Since the movable part 7775 is located within the movable cavity 7776, in order to solve the installation problem of the movable part 7775, in the second embodiment, the first portion 7771 and the second portion 7773 are separately arranged. By providing the sealing ring 7777, it is ensured that the first portion 7771 and the second portion 7773 are tightly fitted, preventing leakage of the grinding material flowing through the first flow channel 7772 and the second flow channel 7774. Of course, if the second portion 7773 and the connecting portion 775, and the first portion 7771 and the extension portion 773 are also separately arranged, the connection between the two is also provided with the sealing ring 7777, improving the overall sealing effect of the barrier 77.

[0039] The one-way valve 777 limits the movement of the movable part 7775 through the first part 7771 and the second part 7773. The structure is simple and ingenious, and one-way conduction can be achieved without manual or electric control of the movable part 7775. The specific implementation principle is described below:

[0040] When no grinding material is injected or when the grinding material is being processed, the movable part 7775 is subjected to gravity and fits tightly against the second part 7773. The first limiting groove 77731 is a concave arc-shaped structure. The first limiting groove 77731 gradually moves towards the center from top to bottom, which can just achieve the fit between the second part 7773 and the movable part 7775. Moreover, no matter how the movable part 7775 rotates or moves, it can fit tightly without any relative position. 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. In addition, it will be affected by gravity and press down on the movable part 7775, making the movable part 7775 fit more tightly against the second part 7773.

[0041] When the abrasive material needs to be injected, due to the impact force of the abrasive material flowing in, the movable part 7775 will be pushed by the abrasive material to the point of contact with the first portion 7771; the arc-shaped protrusion 77711 of the first portion 7771 can not only restrict the movable part 7775 from continuing to move upward, but also guide the movable part 7775 to move towards the center, thereby making the first flow channel 7772 and the second flow channel 7774 connected, and the abrasive material flows through the second flow channel 7774 and the first flow channel 7772 into the receiving space 79.

[0042] It should be noted that there can be two or more first flow channels 7772, which are spaced apart from each other. In this embodiment, the first portion 7771 has multiple first through holes 77715, which are respectively arranged in the central region and circumferentially extending from the central region. This arrangement not only effectively supports the limiting of the movable part 7775, but also maximizes the speed at which the grinding material passes through, thereby improving the feeding efficiency. In addition, the movable part 7775 is designed with a spherical structure, which not only facilitates cooperation with the protrusion 77711 and the first limiting groove 77731 to achieve the conduction of the channel 771, but also has the advantage of being wear-resistant, thus extending its service life.

[0043] Please continue reading. Figure 7 and Figure 8 , Figure 7 This is an enlarged cross-sectional view of the barrier 77 in the third embodiment of the vertical grinding cylinder 7 provided by the present invention. Figure 8yes Figure 7 The diagram shows an exploded perspective view of the barrier 77. The movable component 7775 is a piston structure. The first portion 7771 is provided with a second limiting groove 77713. The movable component 7775 includes a fixing block 77751, a lead screw 77753, and a stop block 77755. The fixing block 77751 is fixedly disposed between the first portion 7771, the second portion 7773, or between the first portion 7771 and the second portion 7773. The lead screw 77753 is movably connected to the fixing block 77751 and moves up and down relative to the fixing block 77751 along the channel 771. The stop block 77755 is disposed at one end of the lead screw 77753 relative to the second limiting groove 77713 and is located in the first flow channel 7772.

[0044] The one-way valve 777 limits the movable part 7775 through the first portion 7771 and / or the second portion 7773, thus achieving one-way flow control without manual or electric control. Furthermore, the movable part 7775 is connected to the stop block 77755 via the lead screw 77753, without excessively occupying the channel 771. Both the first flow channel 7772 and the second flow channel 7774 can be enlarged as much as possible, thereby increasing the flow rate of the grinding material and further improving feeding efficiency. The specific implementation principle is described below:

[0045] When no grinding material is injected or when the grinding material is being processed, the movable part 7775 is in a stationary state, the stop block 77755 is tightly fitted with the second limiting groove 77713, and the channel 771 is closed to the receiving space 79; at this time, the first flow channel 7772 is blocked by the movable part 7775, the grinding medium 200 cannot enter the external pipe 300 through the channel 771, and will also be affected by gravity, pressing down the movable part 7775, making the movable part 7775 fit more tightly with the first part 7771;

[0046] When the grinding material needs to be injected, the stop block 77755 and the lead screw 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.

[0047] It should be noted that the size and structure of the second limiting groove 77713 correspond to the stop block 77755, ensuring that the stop block 77755 can block the first flow channel 7772. No specific restrictions are imposed here. The fixing block 77751 can be directly fixedly connected to the first portion 7771, or fixedly connected to the second portion 7773, or located between the first portion 7771 and the second portion 7773, to restrict the stop block 77755 and the lead screw 77753, preventing them from continuing to move upwards along the channel 771. In this embodiment, the fixing block 77751 includes a sheet-like structure 77757, with a second through hole 77759 in the middle, allowing the fixing block 77751 to increase the flow rate of the grinding material while being fully fixed under force.

[0048] Furthermore, in the third embodiment, unlike the second embodiment, the first portion 7771 and the second portion 7773 can also be integrated, thereby enhancing the sealing effect of the barrier 77.

[0049] Please continue reading. Figure 9 , Figure 9 This is an enlarged cross-sectional view of the barrier 77 in the fourth embodiment of the vertical grinding cylinder 7 provided by the present invention. To better achieve the barrier effect, the barrier 77 further includes a filter 779, which is disposed above the extension 773. Since the extension 773 extends upward from the lower cover 75, the grinding medium 200 may more or less enter the channel 771. However, by providing the filter 779 above the extension 773, the grinding medium 200 entering the channel 771 from top to bottom under the influence of gravity can be further prevented.

[0050] The specific structure of the filter section 779 is not specifically limited here. A brief description will be given using the fourth embodiment as an example.

[0051] First, regarding the connection position, the filter part 779 can be connected to the extension part 773, or it can be connected to the lower cover 75 and extended upwards; it can also be connected to the grinding rotor 6 and extended downwards; or it can be a combination of two or three methods, as long as the position of the filter part 779 relative to the extension part 773 is set.

[0052] Secondly, for the filtration structure, the filter section 779 can be configured in a mesh, strip, or without holes on the side directly above the extension section 773, to ensure that the grinding media 200 cannot directly enter the channel 771 from top to bottom through the extension section 773.

[0053] Finally, regarding the choice of material, the portion of the filter section 779 directly above the extension section 773 can be made of either a rigid or flexible material, but the filtration effect must be ensured. For example, when a flexible material is used for the portion directly above the extension section 773, a tensioning structure needs to be provided around the flexible material to ensure that the flexible material can fully unfold and will not shift in position or shrink as the abrasive material is processed.

[0054] The above description is merely an embodiment of the present invention and does not limit the patent scope of the present invention. Any equivalent structural or procedural transformations made based on the content of the present invention specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of the present invention.

Claims

1. A vertical grinding cylinder, characterized in that, include: cylindrical body; The top cover is located on one side of the cylinder and has an installation opening at its center; The lower cover, together with the cylinder and the upper cover, forms a receiving space, and the lower cover is provided with a feed inlet; and A barrier element, wherein the barrier element has a through channel inside, the barrier element comprising: An extension portion, which extends from the feed inlet into the cylinder and is located within the receiving space; and A connecting part, located on the side of the barrier away from the cylinder, is used to connect an external pipe; The barrier also includes a one-way valve, which is located inside the extension or between the extension and the connecting part, and is used to control the injection of abrasive material into the receiving space in one direction. The one-way valve includes: The first section has a first flow channel relative to the channel; A second section is located below the first section, and the second section has a second flow channel opposite the channel; and A movable component, which is disposed within the channel and cooperates with the first portion and the second portion to control the conduction state between the first flow channel and the second flow channel, or to control the conduction state between the channel and the receiving space; The movable component is a piston structure, and the first portion is provided with a second limiting groove. The movable component includes: A fixing block, wherein the fixing block is fixedly disposed between the first portion, the second portion, or the first portion and the second portion; A lead screw, which is movably connected to the fixed block and moves up and down relative to the fixed block along the channel; and A stop block is disposed at one end of the lead screw relative to the second limiting groove and located in the first flow channel; when the movable part is stationary, the stop block is tightly fitted with the second limiting groove, and the channel is closed to the receiving space; when the grinding material is injected, the stop block and the lead screw move upward relative to the fixed block, and the channel is connected to the receiving space.

2. The vertical grinding cylinder as described in claim 1, characterized in that, A sealing ring is provided between the first section and the second section.

3. The vertical grinding cylinder as described in claim 1, characterized in that, The second portion is integrated with the connecting portion, and / or the first portion is integrated with the extension portion.

4. The vertical grinding cylinder as described in claim 1, characterized in that, The extension portion is integrated with the lower cover.

5. The vertical grinding cylinder as described in claim 1, characterized in that, The barrier also includes a filter section, which is disposed above the extension section.

6. A vertical sand mill, characterized in that, include: frame; A drive assembly, wherein the drive assembly is disposed on the rack; and A vertical grinding assembly, disposed below the driving assembly, the vertical grinding assembly comprising: A grinding rotor, wherein the grinding rotor is connected to the drive assembly via the mounting port; and The vertical grinding cylinder as described in any one of claims 1 to 5, wherein the grinding rotor is housed within the vertical grinding cylinder.

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