Powder compacting machine

Abstract

The utility model discloses a powder compacting machine which comprises a conveying cylinder, a filter element and a shell, a connecting disc is arranged at the left end of the conveying cylinder, a butt joint ring is arranged on the side face of the connecting disc, the filter element is arranged in the shell, a guide plate is arranged on the inner wall of the shell in the horizontal direction, a sliding groove is formed in the circumferential direction of the filter element, and the sliding groove is in sliding contact with the guide plate. When the filter element is installed, the filter element can be smoothly installed in the shell through matching of the sliding groove and the guide plate, the filter element has the advantages of being convenient to install and improving production efficiency, the installation mode can ensure that the filter element and the shell are concentric and the installation position is correct, the limiting ring is arranged at the left end of the filter element, and the limiting ring is matched with the inclined face of the butt joint ring. Smooth butt joint of the filter element and the conveying cylinder is achieved through the limiting ring and the butt joint ring, sealing of the connecting position is achieved, flange plates are arranged at the two ends of the shell respectively, and the flange plates are fixedly connected with the connecting plates through bolts.

Description

Technical Field

[0001] This utility model relates to the field of powder processing technology, specifically a powder compactor. Background Technology

[0002] In the field of powder processing, powder materials, due to their small particle size and large specific surface area, often contain numerous voids and gases between small particles. This leads to problems such as low density, volume expansion, hygroscopicity, and leakage during processes like conveying, filling, and packaging. These characteristics not only increase the volume requirements for packaging and transportation but also easily cause bag bulging, poor sealing, and dust pollution. Especially in modern industrial production with high requirements for environmental protection and efficiency, there is an urgent need to address these issues through powder compaction technology to improve filling efficiency and overall product quality.

[0003] In existing technologies, powder compactors utilize structural components such as conveying cylinders, filter elements, and vacuum pumps to create a negative pressure environment for degassing and compacting powder materials. However, the commonly used filter element structures present several inconveniences during installation. Filter elements are typically inserted manually into the housing without a guiding mechanism, making them prone to misalignment or incorrect positioning. This can lead to poor sealing, gas leakage, and compromised degassing efficiency and filtration accuracy. Furthermore, the sealing structures at the connection points of the filter elements are often inadequate, easily causing interface leaks and affecting the overall stability of the machine.

[0004] For example, Chinese patent document CN116986237A discloses an intelligent powder compaction conveyor. This device achieves powder degassing and compaction through a three-section conveying cylinder, a variable pitch screw shaft, and a vacuum chamber structure, and is equipped with a flap structure for material discharge. However, it still has shortcomings in terms of filter element installation accuracy, sealing reliability, and ease of structural maintenance. For example, the filter element lacks guiding and limiting design, the connection structure is complex, and the sealing performance is unstable, which limits its application in high-efficiency and high-sealing applications.

[0005] In addition, the structural design of traditional powder compaction equipment fails to balance installation efficiency and ease of use and maintenance. The process of replacing filter elements is cumbersome and the operation efficiency is low, making it difficult to meet the needs of modern industry for automated and high-efficiency equipment. Therefore, a powder compaction machine has been proposed. Utility Model Content

[0006] The technical problem this invention aims to solve is to overcome existing defects and provide a powder compactor. By optimizing the guide installation structure and connection sealing method of the filter element, it achieves rapid and accurate assembly and reliable sealing of the filter element, significantly improving installation efficiency and equipment operation stability. Combined with the screw shaft conveying and negative pressure chamber degassing structure, it can efficiently push powder materials, effectively remove entrained gas, improve powder compaction and packaging quality, and prevent dust leakage, meeting environmental protection requirements. It has significant beneficial effects such as reasonable structure, convenient operation, strong sealing performance and wide adaptability, and can effectively solve the problems in the background technology.

[0007] To achieve the above objectives, this utility model provides the following technical solution: a powder compactor, comprising a conveying cylinder, a filter element, and a housing. A connecting plate is provided at the left end of the conveying cylinder, and a docking ring is provided on the side of the connecting plate. The filter element is disposed in the housing, and a guide plate is provided horizontally on the inner wall of the housing. A sliding groove is provided circumferentially on the filter element, and the sliding groove slides in contact with the guide plate. When installing the filter element, the sliding groove and the guide plate cooperate to ensure that the filter element is smoothly installed in the housing, which has the advantages of convenient installation and improved production efficiency. Moreover, this installation method can ensure that the filter element and the housing are concentric and ensure the correct installation position. A limiting ring is provided at the left end of the filter element, and the limiting ring and the docking ring are inclinedly engaged. The limiting ring and the docking ring enable the filter element to be smoothly docked with the conveying cylinder and achieve a seal at the connection. Flanges are provided at both ends of the housing, and the flanges are fixedly connected to the connecting plate by bolts.

[0008] Furthermore, an inner ring is provided on the inner side of the right end of the housing, and an outer ring is provided on the right end of the filter element. The outer ring and the inner ring are fixed together by fixing screws. This method achieves the fixing of both ends of the filter element. A discharge section is also provided on the right end of the housing.

[0009] There are no spiral blades in the discharge section. This discharge section is not powered and relies entirely on the spiral shaft to propel the powder material forward. The powder material is compressed by cooperating with the flap plate.

[0010] The right end of the specific discharge section is connected to a discharge box. The lower end of the discharge box is set as the discharge port. A rotating shaft is installed in the discharge box, and both ends of the rotating shaft pass through the outside of the discharge box. A flap is installed on the rotating shaft. When the pushing force of the material is greater than the weight of the counterweight, the flap opens under the drive of the rotating shaft, and the material is discharged into the discharge box and discharged through the discharge port, thereby discharging a certain volume of material, reducing the volume of the powder material, and loading the material into the bag below. The flap corresponds to the outlet of the discharge section. Both ends of the rotating shaft are equipped with connecting rods, and the counterweight passes through the connecting rods.

[0011] Furthermore, it also includes a vacuum pump, which is connected to the housing via a pipeline. The cavity between the housing and the filter element is set as a negative pressure chamber, which plays a role in degassing.

[0012] Furthermore, a spiral shaft is provided inside the conveying cylinder, which passes through the filter element to filter the powder material and prevent the powder from escaping. The overall sealing structure meets environmental protection requirements. A feed inlet is provided on the conveying cylinder, and a motor is provided on the left side of the conveying cylinder. The output shaft of the motor is connected to the spiral shaft through a coupling.

[0013] Furthermore, at least two chute sections are provided, and they are arranged along the circumference of the filter element. The chute sections provide reliable support when the filter element is installed.

[0014] Compared with the prior art, the beneficial effects of this utility model are:

[0015] 1. By setting a sliding groove in the circumferential direction of the filter element and setting a guide plate at the corresponding position on the inner wall of the housing, a sliding guide fit structure between the filter element and the housing is realized. This structural design overcomes the problems of manual positioning and easy eccentricity or jamming in the filter element installation process of traditional sealing equipment, so that the filter element can be installed smoothly and accurately under the guidance. Through this automatic guiding method, not only is the assembly efficiency of the filter element significantly improved, but the concentricity between the filter element and the housing is also ensured, which helps the precise fit of the subsequent sealing structure and improves the overall operational stability of the equipment.

[0016] 2. The inclined surface fit between the limiting ring and the docking ring achieves both automatic positioning and sealing functions. Compared with traditional straight-insertion or threaded connection methods, this structure simplifies the assembly process and enhances the sealing performance at the connection, thereby effectively preventing powder leakage or gas escape and ensuring the stability and degassing effect of the negative pressure system. Combined with the spiral shaft structure inside the conveying cylinder, it can not only efficiently propel powder materials, but also achieve simultaneous powder filtration during the conveying process, avoiding dust leakage and improving environmental performance.

[0017] 3. By constructing a negative pressure chamber between the filter element and the housing and connecting it to a vacuum pump to form a negative pressure environment, the degassing capacity of the powder is significantly improved. This structural design can effectively remove air entrained in the powder, improve the material density, and avoid expansion or instability during the bagging process, thereby improving the product appearance, packaging quality, and transportation efficiency. The overall structure is compact, easy to maintain and replace, and adapts to the high-frequency continuous operation requirements of industrial sites, possessing good industrialization promotion value and application prospects. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the filter element installation structure of this utility model;

[0019] Figure 2 This utility model Figure 1 A magnified structural diagram at point A;

[0020] Figure 3This utility model Figure 1 A magnified structural diagram at point B;

[0021] Figure 4 This utility model Figure 1 Schematic diagram of the AA section structure;

[0022] Figure 5 This is a schematic diagram of the overall structure of this utility model.

[0023] In the diagram: 1. Conveying cylinder, 2. Filter element, 3. Spiral shaft, 4. Housing, 5. Negative pressure chamber, 6. Guide plate, 7. Slide groove, 8. Flange, 9. Connecting plate, 10. Docking ring, 11. Limiting ring, 12. Fixing screw, 13. Inner ring, 14. Outer ring, 15. Motor, 16. Vacuum pump, 17. Feed inlet. Detailed Implementation

[0024] In the description of this utility model, it should be understood that the terms "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Example

[0025] Please see Figure 1-5 This utility model provides a technical solution: a powder compactor, including a conveying cylinder 1, a filter element 2, a shell 4, a spiral shaft 3, a negative pressure chamber 5, a guide plate 6, a chute 7, a flange 8, a connecting plate 9, a docking ring 10, a limiting ring 11, a fixing screw 12, an inner ring 13, an outer ring 14, a motor 15, a vacuum pump 16, and a feed inlet 17.

[0026] The left end of the conveying cylinder 1 is provided with a connecting plate 9, and the side of the connecting plate 9 is provided with a docking ring 10 for docking with the filter element 2. The filter element 2 is set inside the housing 4. The outer circumferential surface of the filter element 2 is provided with at least two sliding grooves 7 symmetrically distributed along the circumferential direction. The inner wall of the housing 4 is provided with a guide plate 6 in the horizontal direction. The sliding grooves 7 and the guide plate 6 slide in contact and play a guiding role during the installation process, so that the filter element 2 can be pushed in smoothly and kept concentrically installed with the housing 4, ensuring filtration accuracy and sealing performance.

[0027] The left end of the filter element 2 is provided with a limiting ring 11, which corresponds to the docking ring 10 of the connecting plate 9. The two adopt a beveled fit structure and are gradually pressed together during the pushing process, which not only achieves positioning but also enhances the sealing performance. Flanges 8 are provided at both ends of the housing 4. The flanges 8 are fixed to the connecting plate 9 by bolts to form an integrally sealed rigid structure.

[0028] To enhance the fixing effect of filter element 2, an inner ring 13 is provided on the inner side of the right end of housing 4, and an outer ring 14 is provided on the right end of filter element 2. The two are connected by fixing screws 12 to further improve sealing and structural stability. The right end of housing 4 is connected to the discharge section. There are no power components in the discharge section. The material is pushed to the right by the conveying force of the screw shaft 3.

[0029] The right end of the discharge section is connected to a discharge box, which has a discharge port at the bottom and a rotating shaft inside. Both ends of the rotating shaft extend to the outside of the discharge box, and a flap structure is installed on the rotating shaft. The flap is connected to the counterweight through a connecting rod. When the thrust generated by the accumulation of powder material exceeds the weight of the counterweight, the flap opens under the drive of the rotating shaft, realizing the automatic unloading function of compressed material, avoiding powder expansion and backflow, and improving compaction and bagging efficiency.

[0030] The conveying cylinder 1 has a spiral shaft 3 inside, which passes through the filter element 2 to push the powder forward and perform filtration, preventing the powder from escaping and forming a good internal sealed space. The upper part of the conveying cylinder 1 has a feed inlet 17 for adding powder materials. The left side is connected to a motor 15, which drives the spiral shaft 3 to rotate through a coupling to ensure continuous material conveying.

[0031] To further improve the degassing effect of powder, a negative pressure chamber 5 is formed between the shell 4 and the filter element 2. This chamber is connected to the vacuum pump 16 through a pipeline. During operation, the material can be degassed to remove impurities, improve the density of the powder, and avoid problems such as bulging and gas expansion during the bagging process.

[0032] This utility model has a compact overall structure and its components work together to effectively improve the compaction effect and filling efficiency of powder materials. It is easy to operate and maintain, and is suitable for various industrial powder processing scenarios, with broad practical application value.

[0033] Based on the above implementation method, the filter element 2 can be designed as a multi-segment structure, consisting of two or more filter element segments connected in series. Each filter element segment is connected to the other by a snap-fit ​​positioning and sealing ring to achieve modular installation. This structure is suitable for scenarios requiring long-distance material pretreatment, can improve the filtration area and degassing efficiency, and is easy to maintain and replace in sections, adapting to different conveying length requirements.

[0034] The guide plate 6 and the slide 7 structure can be designed to be adjustable. For example, the guide plate can be installed on an elastic bracket, or the slide 7 can be equipped with an adjustment slot to adapt to the assembly requirements of filter elements 2 with different diameters or thicknesses. This structure is suitable for a multi-model compactor platform, improving the versatility of parts and reducing manufacturing and inventory costs.

[0035] In use: The powder compactor is mainly used for conveying, degassing and compacting gaseous powder materials. Its overall workflow relies on the synergistic effect of screw conveying, guiding installation, vacuum degassing and mechanical compaction to effectively improve the density of powder and ensure environmental sealing.

[0036] During operation, powder material is added through the feed inlet 17 on the conveying cylinder, and the screw shaft 3 is driven by the motor 15 to rotate, pushing the material along the axial direction of the conveying cylinder 1. Under the action of the screw shaft, the material enters the filter element 2 set in the housing 4. The filter element 2 is used to filter the powder, preventing the escape of fine powder or gas, thereby forming a closed processing environment.

[0037] The sliding groove 7 and guide plate 6 provided between the filter element 2 and the housing play a role in precise positioning and concentric guidance during the installation of the filter element 2, ensuring a tight fit between the filter element 2 and the housing, and effectively avoiding poor sealing problems caused by positional misalignment; at the same time, the left end limiting ring 11 of the filter element 2 and the docking ring 10 on the conveying cylinder connecting plate form an inclined surface pressing and sealing structure, which can be gradually pressed and sealed during the pushing process, ensuring the airtightness of the overall system.

[0038] When the material enters the filter element 2, the negative pressure chamber 5 outside it forms a negative pressure environment under the action of the vacuum pump 16. Under this negative pressure, the air trapped in the material is effectively removed, and the density is increased, reducing the subsequent packaging bulging phenomenon. The powder that has been degassed is continued to be pushed into the discharge section at the right end of the shell.

[0039] The discharge section has no internal power structure; the powder is propelled forward only by the screw shaft. When the powder accumulates to the end of the discharge section, it comes into contact with the flap structure in the discharge box. When the accumulation pressure exceeds the gravity applied by the flap connecting rod and the hammer, the flap opens under the drive of the rotating shaft, and the powder falls into the discharge port and is discharged into the collection bag below, achieving quantitative unloading and compacted output. This structure avoids the problems of poor unloading or material rebound caused by uneven compaction in traditional methods.

[0040] In summary, this device achieves comprehensive powder processing functions, including efficient compaction, sealed conveying, low-energy degassing, and environmentally friendly emissions, through the organic combination of screw propulsion, sealed structure, vacuum degassing, and automatic unloading mechanism. It is particularly suitable for industrial scenarios with high requirements for sealing, degassing efficiency, and ease of operation.

[0041] The foregoing has shown and described the basic principles, main features and advantages of this utility model. Various changes and modifications may be made to this utility model without departing from the spirit and scope thereof, and all such changes and modifications fall within the scope of this utility model as claimed.

Claims

1. A powder compactor, comprising a conveying cylinder (1), a filter element (2), and a housing (4), characterized in that: A connecting plate (9) is provided at the left end of the conveying cylinder (1), and a docking ring (10) is provided on the side of the connecting plate (9). The filter element (2) is placed in the housing (4). A guide plate (6) is provided in the horizontal direction of the inner wall of the housing (4). A sliding groove (7) is provided in the circumferential direction of the filter element (2). The sliding groove (7) slides in contact with the guide plate (6). A limiting ring (11) is provided at the left end of the filter element (2). The limiting ring (11) and the docking ring (10) are fitted with an inclined surface. Flanges (8) are provided at both ends of the housing (4). The flanges (8) and the connecting plate (9) are fixedly connected by bolts.

2. The powder compactor according to claim 1, characterized in that: An inner ring (13) is provided on the inner side of the right end of the housing (4), and an outer ring (14) is provided on the right end of the filter element (2). The outer ring (14) and the inner ring (13) are fixed together by a fixing screw (12).

3. A powder compactor according to claim 1, characterized in that: It also includes a vacuum pump (16), which is connected to the housing (4) through a pipeline, and the cavity between the housing (4) and the filter element (2) is set as a negative pressure cavity (5).

4. A powder compactor according to claim 1, characterized in that: A spiral shaft (3) is provided on the inner side of the conveying cylinder (1), and the spiral shaft (3) passes through the filter element (2). A feed inlet (17) is provided on the conveying cylinder (1), and a motor (15) is provided on the left side of the conveying cylinder (1).

5. A powder compactor according to claim 1, characterized in that: At least two grooves (7) are provided, and they are arranged along the circumference of the filter element (2).

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