A screening assembly for a shredder and a shredder

Abstract

The utility model discloses a kind of screening assembly for pulverizer and pulverizer, it is related to the technical field of pulverizing equipment.Screening assembly for pulverizer includes screen frame, screen mesh;Screen frame is laid around on the inner side wall of pulverizing cavity, the inner side wall of screen frame is divided into pulverizing section, screening section;Screening section is provided with screening port, the screening port is communicated with the discharge port of pulverizer, screening section is provided with the installation site corresponding with screening port;Screen mesh is detachably installed on installation site, and screening port is blocked, screen mesh is uniformly provided with screening hole;Screening assembly for pulverizer provided by the utility model, by setting screen mesh on the screening section of screen frame, material not completed by pulverizing is pulverized under the joint action of pulverizing section and pulverizing assembly, and screen mesh can be vibrated screening to material under the vibration linkage of screen frame, improve the screening efficiency of material;And by detachably installing screen mesh on screening port, it is convenient to replace and maintain screen mesh later.

Description

Technical Field

[0001] This utility model relates to the field of crushing equipment technology, and in particular to a screening component for a crusher and a crusher. Background Technology

[0002] With the continuous advancement and innovation of modern medical technology, the application fields of traditional Chinese medicine (TCM) decoction pieces are constantly expanding, and their processing methods are becoming increasingly refined and diversified. Among these, the number of TCM decoction piece powders is steadily increasing, a trend particularly evident in harder TCM materials such as minerals. For these hard TCM materials, the main purpose of powdering is to break down their dense cellular structure, thereby facilitating the more complete dissolution of the active ingredients during subsequent decoction, thus improving the utilization rate of the medicinal efficacy.

[0003] In the actual production and processing of traditional Chinese medicine decoction pieces, after the medicinal materials are fed into a pulverizer for pulverization, the pulverized material needs to be discharged from the pulverizer's outlet. However, due to the varying particle sizes during pulverization, a sieve is required to meticulously sieve the discharged material to ensure the final product meets the required quality standards. Only qualified materials with particle sizes conforming to the specified standards are successfully discharged and proceed to the next production step; while unqualified materials that are too large or do not meet the sieving standards need to be returned to the pulverizer for further pulverization until their particle size meets the requirements.

[0004] However, the screens widely used in actual production are usually fixedly mounted on the crusher. While this fixed installation method ensures the stability of the screen during the crushing process to a certain extent, it also brings many inconveniences. On the one hand, screens are prone to wear and clogging after long-term use, requiring regular disassembly, cleaning, or replacement. The fixed installation method makes the disassembly process very cumbersome, requiring a lot of manpower and time, and increasing equipment maintenance costs. On the other hand, the existing screen design is separate from the crushing function of the crusher, lacking effective coordination between the two, resulting in low screening efficiency. During the screening process, some materials may repeatedly circulate between the crusher and the screen due to untimely or incomplete screening, which not only prolongs the production cycle and reduces production efficiency but also has a certain impact on overall capacity. Utility Model Content

[0005] In view of this, the purpose of this utility model is to overcome the shortcomings in related technologies. This utility model provides a screening component for a pulverizer and a pulverizer.

[0006] This utility model provides the following technical solution: A screening component for a pulverizer is disposed inside the pulverizing chamber of the pulverizer. The screening component for the pulverizer includes a screen frame and a screen mesh.

[0007] The screen frame is laid around the inner wall of the crushing chamber. The inner wall of the screen frame is divided into a crushing section and a screening section. The crushing section is used to work with the crushing components in the crushing chamber to crush the material. The screening section has a screening port that is connected to the discharge port of the crusher. The screening section has a mounting position corresponding to the screening port. The screen is detachably installed on the mounting position and seals the screening port. The screen has screening holes evenly distributed on it.

[0008] As a further improvement to the above technical solution, an embedding groove is provided on the end face of the sieve frame near the side opening of the crushing chamber. The embedding groove is used to form an installation position, and the sieve mesh is embedded in the embedding groove to block the sieving port.

[0009] As a further improvement to the above technical solution, the two ends of the embedded groove in the circumferential direction relative to the axis of the screen frame are provided with positioning grooves, and the screen mesh is provided with positioning blocks corresponding to the positioning grooves, and the positioning blocks are inserted into the positioning grooves.

[0010] As a further improvement to the above technical solution, a limiting platform is provided at the opening of the embedding groove, and a gasket is laid on the limiting platform to seal the opening of the embedding groove.

[0011] As a further improvement to the above technical solution, the gasket is made of rubber.

[0012] As a further improvement to the above technical solution, at least two screening ports are provided on the screening section.

[0013] As a further improvement to the above technical solution, the working rotation direction of the crushing component is the first direction, the crushing section is set with a length of L1 along the first direction, the screening section is set with a length of L2 along the first direction, and the values ​​of L1 and L2 satisfy: 1 / 4≤L2 / L1≤1 / 3.

[0014] As a further improvement to the above technical solution, crushing teeth are evenly distributed along the first direction on the inner sidewall of the crushing section.

[0015] As a further improvement to the above technical solution, the crushing tooth is a unidirectional tooth, and the blocking direction of the crushing tooth is opposite to the first direction.

[0016] The present invention also provides a pulverizer, including a sieving assembly for pulverizer as described in any of the above.

[0017] Compared with related technologies, the beneficial effects of this utility model are: The sieving component for a pulverizer provided by this utility model allows for efficient processing of medicinal materials. In practical applications, when using this pulverizer to process medicinal materials, the operator simply starts the pulverizer, and the pre-set pulverizing component inside the pulverizing chamber begins to rotate at high speed. At this time, the rotating pulverizing component works in conjunction with the pulverizing section on the screen frame, and the two work together to pulverize the medicinal materials entering the pulverizing chamber. It is worth mentioning that during the pulverizing process, the pulverizing section is constantly subjected to intense collisions with the material. The vibrations generated by these collisions are not wasted but are transmitted to the sieving section of the screen frame. The sieving opening of the sieving section is sealed with a specially designed screen, and the vibrations transmitted to the screen impart certain dynamic characteristics to it.

[0018] After the medicinal materials undergo initial crushing in the grinding chamber, they gradually move to the screen. At this point, with the continuous vibration of the screen, the fine particles that have been crushed pass smoothly through the screening holes due to the inertial force generated by the vibration and are eventually discharged orderly from the grinder's discharge port, completing the first stage of the entire crushing and screening process. Larger particles that are not yet fully crushed cannot pass through the screening holes and will bounce on the screen surface due to the vibration. This bouncing not only prevents material accumulation on the screen but also exposes these uncrushed materials back to the range of the crushing components for further processing until the desired degree of crushing is achieved. In this way, the screening component effectively reduces the probability of material accumulation on the screen, significantly improves the crusher's screening and discharge efficiency, and ensures the continuity and stability of the production process.

[0019] Furthermore, by detachably mounting the screen in the screening section, operators can easily remove the old screen from its mounting position and replace it with a new one when needed. This design not only significantly reduces the difficulty of screen replacement and the time and labor costs required, but also facilitates the subsequent maintenance and upkeep of the crusher. When the screen experiences wear or clogging due to prolonged use, operators can quickly and conveniently replace or clean it, ensuring the crusher always maintains good working condition and extending the equipment's service life.

[0020] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, preferred embodiments are described below in detail with reference to the accompanying drawings. Attached Figure Description

[0021] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0022] Figure 1 This diagram shows a schematic view of the pulverizer in one embodiment of the present invention. Figure 2 This is a schematic diagram of the structure of a sieving assembly for a pulverizer according to one embodiment of the present invention; Figure 3 It shows Figure 2 A magnified view of a portion of point A in the middle.

[0023] Explanation of key component symbols: 100-Pulverizer; 110-Pulverizing chamber; 120-Side opening; 130-Pulverizing assembly; 200-Screen frame; 210-Pulverizing section; 211-Pulverizing teeth; 220-Screening section; 221-Screening port; 222-Embedding groove; 223-Positioning groove; 224-Limiting platform; 225-Gasket; 300-Screen mesh; 310-Positioning block. Detailed Implementation

[0024] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0025] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0026] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0027] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0028] In this utility model, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0029] Combination Figure 1 , Figure 2 As shown, an embodiment of this utility model provides a screening component for a pulverizer, which is disposed in the pulverizing chamber 110 of the pulverizer 100. The screening component for the pulverizer includes a screen frame 200 and a screen 300.

[0030] The screen frame 200 is laid around the inner wall of the crushing chamber 110 and is fixedly connected to the inner wall of the crushing chamber 110 by bolts or other connecting parts. The inner wall of the screen frame 200 is divided into a crushing section 210 and a screening section 220. The crushing section 210 is used to work together with the crushing component 130 in the crushing chamber 110 to crush the material. The screening section 220 is provided with a screening port 221, which is connected to the discharge port of the crusher 100. The screening section 220 is provided with a mounting position corresponding to the screening port 221. The screen mesh 300 is detachably installed on the mounting position and blocks the screening port 221. The screen mesh 300 is evenly distributed with screening holes.

[0031] The sieving component for the pulverizer provided in this embodiment, in practical application, when using the pulverizer 100 to pulverize medicinal materials, the operator only needs to start the pulverizer 100, and the preset pulverizing component 130 in the pulverizing chamber 110 will begin to rotate at high speed. At this time, the rotating pulverizing component 130 can cooperate with the pulverizing section 210 on the screen frame 200, and the two work together to pulverize the medicinal materials entering the pulverizing chamber 110. It is worth mentioning that during the pulverizing process, the pulverizing section 210 will be subjected to continuous and intense collisions with the material. The vibration generated by these collisions will not be wasted, but will be transmitted to the sieving section 220 of the screen frame 200. A specially designed screen 300 is sealed on the sieving port 221 of the sieving section 220. After the vibration is transmitted to the screen 300, it will give the screen 300 certain dynamic characteristics.

[0032] After the medicinal materials are initially crushed in the crushing chamber 110, they gradually move to the position of the screen 300. At this time, with the continuous vibration of the screen 300, the fine particles that have been crushed will pass smoothly through the screening holes on the screen 300 due to the inertial force generated by the vibration, and finally be discharged orderly from the discharge port of the crusher 100, completing the first stage of the entire crushing and screening process. As for the larger particles that have not been crushed, since they cannot pass through the screening holes, they will bounce on the screen surface with the vibration of the screen 300. This bouncing not only avoids the accumulation of materials on the screen 300, but also allows these uncrushed materials to be exposed again within the range of action of the crushing component 130, so that they can be further processed by the crushing component 130 until the required degree of crushing is achieved. In this way, the screening component can effectively reduce the probability of material accumulation on the screen 300, significantly improve the screening and discharge efficiency of the crusher 100, and ensure the continuity and stability of the production process.

[0033] Furthermore, by detachably mounting the screen 300 on the installation position of the screening section 220, operators can easily remove the old screen 300 from its installation position and replace it with a new one when replacement is needed. This design not only significantly reduces the difficulty of replacing the screen 300 and minimizes the time and labor costs required during the replacement process, but also facilitates the subsequent maintenance and upkeep of the crusher 100. When the screen 300 experiences wear or clogging due to prolonged use, operators can quickly and easily replace or clean it, thereby ensuring that the crusher 100 always maintains good working condition and extending the equipment's service life.

[0034] In some specific embodiments, the end face of the sieve frame 200 near the side opening 120 of the crushing chamber 110 is provided with an embedding groove 222. The embedding groove 222 is used to form an installation position. The screen 300 is embedded in the embedding groove 222. When the screen 300 is correctly installed, it can tightly seal the screening port 221, ensuring that the material will not leak out from the gap between the screening port 221 and the screen 300 during the crushing and screening process, thus ensuring the sealing and stability of the entire processing flow.

[0035] Furthermore, in the design of the embedding groove 222, its opening is located on the side of the screen frame 200. This design is because, after the screen 300 is inserted into the embedding groove 222 and seals the screening opening 221, the material will continuously impact the screen 300 during normal operation of the crusher 100. At this time, the impact direction of the material on the screen 300 and the assembly direction between the screen 300 and the embedding groove 222 are perpendicular to each other. This perpendicular mechanical relationship can effectively disperse the external force generated by the material impact, preventing the screen 300 from moving relative to the embedding groove 222 due to long-term impact from a single direction, thus avoiding loosening. Even if the crusher 100 operates at high intensity for a long time, the screen 300 can maintain a stable installation state, ensuring the stability and reliability of the screening effect.

[0036] Furthermore, the design fully considers the ease of installation and maintenance of the screen 300. A side door is typically provided on the side opening 120 of the crushing chamber 110. When this side door is closed, it simultaneously seals the embedded groove 222. This design further strictly limits the relative position of the screen 300 with respect to the screening port 221, fixing the screen 300 from multiple directions, greatly enhancing the stability of the screen 300 installation, ensuring reliable operation under various working conditions, and preventing displacement or detachment due to vibration or external forces.

[0037] When the screen 300 needs to be replaced or maintained, simply opening the side door immediately removes the restriction on the screen 300. At this time, the operator can easily remove the screen 300 from the embedding groove 222 or install a new screen 300, realizing quick disassembly and assembly of the screen 300, greatly shortening the equipment maintenance and repair time and improving production efficiency.

[0038] like Figure 3As shown, in some specific embodiments, the embedding groove 222 has positioning grooves 223 at both ends in the circumferential direction relative to the axis of the screen frame 200. The screen 300 is provided with positioning blocks 310 corresponding to the positioning grooves 223, and the positioning blocks 310 pass through the positioning grooves 223. Through the cooperation of the positioning grooves 223 and the positioning blocks 310, in actual use, when the screen 300 is in working condition for a long time or is subjected to external forces such as material impact, the positioning blocks 310 will play a role in restricting and fixing within the positioning grooves 223. This restricting effect can effectively prevent the screen 300 from twisting, wrinkling or shifting in the circumferential direction, so that the screen 300 can always maintain a stretched state. Maintaining the smooth and unstretched state of the screen 300 is crucial for ensuring its screening effect on materials. Only when the screen 300 is flat and free from deformation can the materials be accurately screened according to the predetermined screening aperture when passing through the screen 300. This avoids problems such as large particles being mixed with small particles due to screen 300 deformation, or small particles being unable to pass through the screen 300. This effectively improves the working accuracy and stability of the entire crusher 100 screening component and ensures the smooth operation of the production process.

[0039] In some specific embodiments, a limiting platform 224 is provided at the opening of the embedding groove 222, and a gasket 225 is laid on the limiting platform 224. The gasket 225 is used to seal the opening of the embedding groove 222. In actual installation and use, when the side door of the side opening 120 of the crushing chamber 110 is closed, the gasket 225 is located between the screen 300 and the side door. At this time, the side door will exert a certain squeezing force on the gasket 225 during the closing process. After being squeezed, the gasket 225 will undergo elastic deformation and tightly fill the gap between the screen 300 and the side door. This squeezing action not only further strengthens the sealing effect of the opening of the embedding groove 222, preventing material from leaking out from there during crushing and screening, but more importantly, it can tighten and limit the screen 300 relative to the axial direction of the crushing chamber 110.

[0040] Through this clamping and limiting method, the screen 300 is firmly fixed in the axial direction, preventing axial movement or loosening due to external forces such as vibration of the crusher 100 during operation or impact of materials. Even if the crusher 100 operates at high intensity for extended periods, the screen 300 will always remain in the correct installation position, ensuring that the size and distribution of its screen holes meet design requirements. This guarantees a stable and reliable screening effect for materials, effectively avoiding problems such as inaccurate screening and large particles mixing into qualified products due to screen 300 displacement. This significantly improves the working quality and production efficiency of the entire crusher 100 screening component.

[0041] In some specific embodiments, the gasket 225 is made of rubber, which has strong wear resistance and corrosion resistance, making it easy to use for a long time and improving the working cycle of the crusher.

[0042] In some specific embodiments, the screening section 220 has at least two screening ports 221. On the one hand, multiple screening ports 221 facilitate improved screening efficiency; on the other hand, if the screening section 220 has only one screening port 221 and a corresponding screen 300, once the screen 300 is damaged, the entire screening process cannot continue, and the crusher 100 will be forced to stop working. This not only affects production progress but may also increase equipment maintenance costs and downtime losses. In this embodiment, at least two screening ports 221 are provided, each equipped with an independent screen 300. When one screen 300 is damaged, the other screens 300, being in an independent working state, can still maintain normal screening operations. In this way, the crusher 100 can continue to operate without affecting most of its screening functions, giving operators sufficient time to arrange for the repair or replacement of the damaged screen 300. This ensures continuous operation of the crusher 100, improves production continuity and stability, and reduces production losses due to equipment failure.

[0043] In some specific embodiments, the working rotation direction of the crushing component 130 is a first direction, the length of the crushing section 210 along the first direction is L1, and the length of the screening section 220 along the first direction is L2. The values ​​of L1 and L2 satisfy: 1 / 4 ≤ L2 / L1 ≤ 1 / 3. If the value of L2 / L1 is too small, that is, the length of the screening section 220 is too short relative to the length of the crushing section 210, then the material will not stay in the screening section 220 for a sufficient time, resulting in insufficient screening. A large amount of material that meets the particle size requirements may be returned to the crushing section 210 for crushing along with the larger particles, thereby affecting the discharge speed of the crushed product. At the same time, due to insufficient screening, the amount of material returned to the crushing section 210 for further crushing will increase, which will to some extent increase the burden on the crushing section 210 and reduce the crushing efficiency.

[0044] Conversely, if the value of L2 / L1 is too large, that is, the length of the screening section 220 is relatively too long, although the screening effect may be improved to a certain extent, the crushing section 210 will be shortened, which will lead to a decrease in the crushing efficiency of the material and affect the overall crushing efficiency of the crusher 100.

[0045] When the values ​​of L1 and L2 satisfy 1 / 4 ≤ L2 / L1 ≤ 1 / 3, the crushing speed and screening discharge speed of the crusher 100 can be balanced. Within this ratio range, the material has sufficient time and space to undergo thorough crushing in the crushing section 210, while also receiving timely and effective screening in the screening section 220. This ensures both the quality of the crushed product and the working efficiency of the crusher 100, thereby guaranteeing the efficient crushing and processing of medicinal materials by the crusher 100 and meeting the needs of actual production.

[0046] In some specific embodiments, crushing teeth 211 are evenly distributed on the inner sidewall of the crushing section 210 along the first direction, which improves the crushing effect of the crushing section 210 and the crushing component 130 in working together to crush materials and improves the working efficiency of the crusher 100.

[0047] In some specific embodiments, the crushing tooth 211 is a unidirectional tooth, and the blocking direction of the crushing tooth 211 is opposite to the first direction, which further improves the crushing effect of the crushing section 210 and the crushing component 130 working together to crush the material and improves the working efficiency of the crusher 100.

[0048] The embodiments of this utility model also provide a crusher 100, which can be a toothed crusher, hammer crusher, or the like. It includes a crusher screening component as described in the above embodiments. The crusher screening component is installed in the crushing chamber 110 of the crusher 100. The crusher 100 has all the effects of the crusher screening component, which will not be specifically described here.

[0049] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0050] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention.

Claims

1. A screening assembly for a pulverizer, disposed within the pulverizing chamber (110) of a pulverizer (100), characterized in that, include: A sieve frame (200) is laid around the inner wall of the crushing chamber (110). The inner wall of the sieve frame (200) is divided into a crushing section (210) and a screening section (220). The crushing section (210) is used to work together with the crushing component (130) in the crushing chamber (110) to crush the material. The screening section (220) is provided with a screening port (221), which is connected to the discharge port of the crusher (100). The screening section (220) is provided with an installation position corresponding to the screening port (221). A screen (300) is detachably installed on the mounting position and blocks the screening port (221). Screening holes are evenly distributed on the screen (300). An embedding groove (222) is provided on the end face of the side opening (120) of the sieve frame (200) near the crushing chamber (110). The embedding groove (222) is used to form an installation position. The screen (300) is embedded in the embedding groove (222) and blocks the screening port (221). The opening of the embedding groove (222) is provided with a limiting platform (224), and a gasket (225) is laid on the limiting platform (224). The gasket (225) is used to seal the opening of the embedding groove (222).

2. The screening assembly for a pulverizer according to claim 1, characterized in that, The embedding groove (222) has positioning grooves (223) at both ends of the circumferential direction relative to the axis of the sieve frame (200). The sieve (300) has positioning blocks (310) corresponding to the positioning grooves (223), and the positioning blocks (310) are inserted into the positioning grooves (223).

3. The screening assembly for a pulverizer according to claim 1, characterized in that, The gasket (225) is made of rubber.

4. The screening assembly for a pulverizer according to claim 1, characterized in that, At least two screening ports (221) are provided on the screening section (220).

5. The screening assembly for a pulverizer according to claim 1, characterized in that, The working rotation direction of the crushing component (130) is the first direction, the crushing section (210) is set with a length of L1 along the first direction, and the screening section (220) is set with a length of L2 along the first direction. The values ​​of L1 and L2 satisfy: 1 / 4≤L2 / L1≤1 / 3.

6. The screening assembly for a pulverizer according to claim 5, characterized in that, The inner wall of the crushing section (210) is evenly distributed with crushing teeth (211) along the first direction.

7. The screening assembly for a pulverizer according to claim 6, characterized in that, The crushing tooth (211) is a unidirectional tooth, and the blocking direction of the crushing tooth (211) is opposite to the first direction.

8. A pulverizer (100), characterized in that, Includes a screening assembly for a pulverizer as described in any one of claims 1 to 7.

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