Bidirectional conveying spiral assembly

Abstract

The utility model relates to the technical field of spiral conveying, in particular to a bidirectional conveying spiral assembly which comprises a double-spiral conveying assembly used for conveying materials, a protective cover arranged on the outer side of the double-spiral conveying assembly and a driving assembly installed on one side of the protective cover. The conveying belt rotates in the protective cover and is used for conveying materials; the double-screw conveying assembly comprises two screw parts, the two screw parts are symmetrically arranged, a vertical plate is arranged in the middle of each screw part, and one or more scraping plates which are arranged at equal intervals are fixed to the two sides of each vertical plate; materials can be scraped in real time through the scraping plates on the two sides of the vertical plate when the spiral component rotates, and excessive accumulation of the materials in a spiral area is avoided from the source. The high-strength wear-resistant material and the special design can cope with hard materials, the problem that a traditional scraper is prone to deformation is solved, smoothness of a conveying channel is guaranteed, and the blocking risk is reduced.

Description

Technical Field

[0001] This utility model relates to the field of spiral conveying technology, specifically a bidirectional conveying spiral assembly. Background Technology

[0002] Twin-screw conveyors are a common type of material conveying equipment. When the conveyed material has high moisture content, high viscosity, or contains impurities, it is prone to accumulate inside the screw conveyor, causing blockages. In addition, excessive feeding speed, exceeding the conveying capacity of the equipment, can also lead to blockages.

[0003] Existing twin-screw conveyor equipment has many components for cleaning when materials are blocked, such as scrapers installed on the edge of the screw blades or near the inner wall of the casing, or vibration components, and high-pressure air can be used to clear the blocked material. However, these measures are set up separately in use. For example, scrapers are prone to deformation when scraping harder materials, and the impact force of air pressure is difficult to control. Vibration can easily cause misalignment of the screw components, affecting the overall use. Based on this, this application provides a bidirectional conveying screw assembly. Utility Model Content

[0004] To address the shortcomings of existing technologies, this utility model provides a bidirectional conveying spiral assembly, which solves the problems of easy damage and poor efficiency when using cleaning components in existing technologies.

[0005] The present invention relates to a bidirectional conveying spiral assembly, comprising a double spiral conveying assembly for conveying materials, a protective cover disposed outside the double spiral conveying assembly, and a drive assembly mounted on one side of the protective cover. The drive assembly drives the double spiral conveying assembly to rotate within the protective cover for conveying materials.

[0006] The double-helix conveying assembly includes two helical components, which are symmetrically arranged and have a vertical plate in the middle. One or more scraper plates are fixed on both sides of the vertical plate at equal intervals, and the scraper plates are adapted to the helical area of ​​the helical components.

[0007] The protective cover includes a cover body, and a rotation gap is maintained between the inner side of the cover body and the spiral component. A bending plate is installed at the rotation gap, and a spraying assembly is provided at the bending plate for cleaning the outer surface of the spiral component.

[0008] As a further improvement of this utility model, the top of the cover is provided with a feeding port, and the bottom of the cover is provided with a discharge port on the side away from the feeding port.

[0009] As a further improvement of this utility model, the driving assembly includes a driving motor, the output shaft of which is adapted to the connecting shaft of one of the spiral components, for driving one of the spiral components to rotate.

[0010] As a further improvement of this utility model, the connecting shaft of the other spiral component passes through both ends of the protective cover and is equipped with a gear set and a transmission rod. The other spiral component drives one of the connecting shafts and the transmission rod to drive the other connecting shaft and the gear set to rotate via a drive motor.

[0011] As a further improvement of this utility model, a transmission area is provided at one end of the cover, which is adapted to the gear set and is covered by the cover.

[0012] As a further improvement of this utility model, the spraying assembly includes a spray hood, one side of which is provided with a slot, and a sealing plate is installed through the slot.

[0013] As a further improvement of this utility model, the sealing plate is provided with a flow guide port for connecting the air compressor assembly and conveying pressurized gas.

[0014] As a further improvement of this utility model, a spray area is provided on the other side of the spray shroud, and one or more spray holes are provided in the spray area for spraying pressurized gas.

[0015] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0016] This invention utilizes scraper plates on both sides of the vertical plate to scrape materials in real time as the spiral component rotates, preventing excessive material accumulation in the spiral area from the outset. Its high-strength, wear-resistant materials and special design can handle harder materials, solving the problem of deformation in traditional scrapers, ensuring smooth conveying channels, and reducing the risk of blockages.

[0017] The spray assembly offers two cleaning methods: high-pressure air spray and cleaning fluid spray. High-pressure air can quickly remove loose materials, while the cleaning fluid can perform deep cleaning. Combined with the scraping action of the scraper, it is more comprehensive and effective than a single cleaning assembly, ensuring that the surface of the spiral component is clean.

[0018] Furthermore, the sealing plate of the spraying assembly is removable, which facilitates the maintenance and cleaning of the spraying assembly, ensuring its normal operation, while also reducing maintenance costs and difficulty. Attached Figure Description

[0019] The accompanying drawings, which are included to provide a further understanding of this application and form part of this application, illustrate exemplary embodiments and are used to explain this application, but do not constitute an undue limitation of this application. In the drawings:

[0020] Figure 1 This is a three-dimensional structural diagram of the protective cover, double helix conveying assembly, and drive assembly of this utility model;

[0021] Figure 2 This is a top view of the double-helix conveying assembly of this utility model;

[0022] Figure 3 This utility model Figure 2 Schematic diagram of the cross-sectional structure of the middle AA section;

[0023] Figure 4 This is a side view of the double-helix conveyor assembly of this utility model.

[0024] Figure 5 This utility model Figure 4 Schematic diagram of the cross-sectional structure of the middle BB section;

[0025] Figure 6 This utility model Figure 5 Enlarged structural diagram at point A in the middle;

[0026] Figure 7 This is a three-dimensional structural diagram of the spray assembly of this utility model;

[0027] Figure 8 This is a top view of the spray assembly of this utility model.

[0028] In the diagram: 1. Protective cover; 2. Twin-helix conveyor assembly; 3. Drive assembly; 4. Spray assembly;

[0029] 11. Cover body; 12. Feed port; 13. Discharge port; 14. Rotation gap; 15. Bending plate;

[0030] 21. Vertical plate; 22. Scraper plate; 23. Spiral component; 24. Connecting shaft

[0031] 31. Drive motor; 32. Transmission rod; 33. Transmission area; 34. Gear set;

[0032] 41. Enclosed plate; 42. Flow guide; 43. Slot; 44. Spray cover; 45. Spray area; 46. Spray hole. Detailed Implementation

[0033] The following illustrations will reveal several embodiments of the present invention. For clarity, many physical details will be described in the following description. However, it should be understood that these physical details should not be used to limit the present invention. That is, in some embodiments of the present invention, these physical details are not essential. Furthermore, for the sake of simplicity, some conventional structures and components will be shown in a simple schematic manner in the illustrations.

[0034] Furthermore, the technical solutions of the various embodiments can be combined with each other, but this must be 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 this utility model.

[0035] Please see Figure 1-8 Twin-screw conveyors are commonly used for material transport in industrial production. However, when conveying materials with high moisture content, high viscosity, or containing impurities, the materials tend to accumulate inside the equipment, leading to blockages. Furthermore, if the feed rate exceeds the equipment's conveying capacity, blockages can also occur, which not only affects production efficiency but may even damage the equipment.

[0036] To address material blockage issues, existing twin-screw conveyors are equipped with various cleaning components, such as scrapers mounted on the edges of the screw blades or the inner wall of the casing, vibrating components, and devices utilizing high-pressure air for unblocking. However, these components all have certain limitations:

[0037] Scraper: When scraping harder materials, the scraper is prone to deformation due to the large external force. The scraping effect of the deformed scraper will be greatly reduced, and it will not be able to effectively clear the blockage of materials. It may also need to be replaced frequently, increasing maintenance costs and downtime.

[0038] Compressed air impact: When using high-pressure air to impact blockages, it is difficult to precisely control the impact force. If the impact force is too great, it may damage the equipment; if the impact force is too small, it will not be effective in clearing the blockage.

[0039] Vibration Component: When using vibration to unclog materials, the spiral component 23 may become misaligned due to vibration. Misalignment of the spiral component 23 will affect the normal operation of the equipment, leading to a decrease in conveying efficiency, and may even cause more serious equipment failures. Based on this, this application provides a bidirectional conveying spiral component, including a double spiral conveying component 2 for conveying materials, a protective cover 1 disposed outside the double spiral conveying component 2, and a drive component 3 installed on one side of the protective cover 1. The drive component 3 drives the double spiral conveying component 2 to rotate within the protective cover 1 for conveying materials.

[0040] The double-helix conveying assembly 2 includes two helical components 23, which are symmetrically arranged and have a vertical plate 21 in the middle. One or more scraper plates 22 are fixed on both sides of the vertical plate 21 and are arranged at equal intervals. The scraper plates 22 are adapted to the helical area of ​​the helical components 23.

[0041] The protective cover 1 includes a cover body 11, and a rotation gap 14 is maintained between the inner side of the cover body 11 and the spiral component 23. A bending plate 15 is installed at the rotation gap 14, and a spraying assembly 4 is provided at the bending plate 15 for cleaning the outer surface of the spiral component 23.

[0042] Two spiral components 23 are symmetrically arranged, with a central vertical plate 21 dividing the entire conveying area in two. Multiple equally spaced scraper plates 22 are fixed to both sides of the vertical plate 21, perfectly fitting the spiral region of the spiral components 23. When the spiral components 23 rotate under the drive assembly 3, the scraper plates 22 scrape their surfaces as they rotate. For example, when damp grains accumulate on the spiral components 23, the scraper plates 22 can promptly remove the accumulated grains, preventing them from accumulating and causing blockages.

[0043] The scraper blade 22 is made of high-strength, wear-resistant alloy material, and its shape is designed according to the spiral shape of the spiral component 23 to ensure close contact with the spiral component 23 during the scraping process. The edges of the scraper blade 22 are specially treated to make them sharper, enabling them to easily scrape off harder material deposits.

[0044] The cover 11 completely encloses the double-helix conveying assembly 2, serving two purposes: firstly, to protect it from external debris entering the conveying system; and secondly, to maintain a certain rotational gap 14 between the inner side of the cover 11 and the helical component 23. This gap ensures that the helical component 23 can rotate freely and also provides space for installing the bending plate 15 and the spraying assembly 4.

[0045] Bending plate 15 and spray assembly 4: Bending plate 15 is installed at the rotation gap 14, and its shape matches the outer contour of the spiral component 23. Spray assembly 4 is located at bending plate 15 and is activated when signs of material residue or blockage are detected on the surface of spiral component 23. Spray assembly 4 can be connected to a high-pressure air source or a cleaning fluid source. If conveying dry materials such as grains, spray assembly 4 can spray high-pressure air to blow off the material adhering to the surface of spiral component 23; if deep cleaning is required, spray assembly 4 can spray cleaning fluid to thoroughly clean spiral component 23.

[0046] The drive assembly 3 employs a combination of a high-efficiency motor and a reducer, transmitting power to the twin-helix conveyor assembly 2 via a precise transmission system. The motor can adjust its speed according to the quantity and properties of the conveyed material, ensuring the stability and efficiency of the conveying process. For example, when conveying a large amount of grain, the motor can increase its speed to increase conveying capacity; when cleaning is required after conveying, the motor can reduce its speed to cooperate with the spray assembly 4 and the scraper 22 for cleaning.

[0047] The scraper plates 22 on both sides of the vertical plate 21 can scrape the accumulated material in real time during the rotation of the spiral component 23, preventing excessive accumulation of material on the spiral component 23 and reducing the possibility of blockage from the source. Even when encountering hard material accumulation, the scraper plates 22 can effectively scrape it with their high strength and special design, avoiding the problem of easy deformation of existing scrapers.

[0048] The spray assembly 4 provides multiple options for cleaning the spiral component 23. High-pressure air jets can quickly remove loose material from the surface, while cleaning fluid jets can perform deep cleaning, ensuring the surface of the spiral component 23 remains clean. This cleaning method, which combines scraping and spraying, is more comprehensive and effective than a single cleaning assembly.

[0049] The protective cover 1 not only protects the twin-screw conveyor assembly 2 from external debris, but the design of the rotation gap 14 and the installation of the bending plate 15 also provide a stable environment for the rotation of the screw component 23. At the same time, timely and effective cleaning reduces wear and corrosion of the screw component 23 by materials, extending the service life of the equipment.

[0050] By addressing blockage issues and maintaining the cleanliness of the screw component 23, this bidirectional conveying screw assembly ensures smooth material transport and improves conveying efficiency. The speed adjustment function of the drive component 3 allows for adjustment of the conveying speed according to actual conditions, further enhancing the stability of the conveying process.

[0051] The top of the cover 11 is provided with a feeding port 12, and the bottom of the cover 11 is provided with a discharge port 13 on the side away from the feeding port 12.

[0052] The drive assembly 3 includes a drive motor 31, the output shaft of which is adapted to the connecting shaft 24 of one of the spiral components 23, for driving one of the spiral components 23 to rotate.

[0053] The connecting shaft 24 of the other spiral component 23 passes through both ends of the protective cover 1 and is equipped with a gear set 34 and a transmission rod 32. The other spiral component 23 drives one of the connecting shafts 24 to drive the transmission rod 32 to rotate the other connecting shaft 24 and the gear set 34 through the drive motor 31.

[0054] One end of the cover 11 is provided with a transmission area 33, which is adapted to the gear set 34 and is covered by the cover 11.

[0055] The spraying assembly 4 includes a spray shroud 44, a slot 43 is provided on one side of the spray shroud 44, and a sealing plate 41 is installed through the slot 43.

[0056] The sealing plate 41 has a flow guide port 42 for connecting to the air compressor assembly and conveying pressurized gas.

[0057] On the other side of the spray shroud 44, there is a spray area 45, and one or more spray holes 46 are provided in the spray area 45. The spray holes 46 are used to spray pressurized gas.

[0058] The feeding port 12 at the top of the cover 11 is connected to the discharge pipe of the storage container. When raw materials need to be transported, they flow from the storage container into the feeding port 12 through the pipe. The feeding port 12 is equipped with an adjustable valve, which can be controlled by the control system to precisely control the feeding speed and amount according to production needs, avoiding blockage caused by the feeding speed exceeding the equipment's conveying capacity.

[0059] The discharge port 13, located on the bottom side of the enclosure 11 away from the feed port 12, is connected to the feed pipe of the reactor. A flow monitoring device is installed at the discharge port 13 to monitor the discharge flow rate in real time and provide feedback to the control system for dynamic adjustment of the entire conveying process.

[0060] The drive motor 31 is the power source for the entire conveying assembly, and it is installed on one side of the protective cover 1. The motor is a variable frequency motor, which can flexibly adjust the speed according to different material characteristics and conveying requirements. For example, when conveying highly viscous chemical raw materials, the motor speed is reduced so that the screw component 23 has sufficient force to push the material forward; when conveying materials with good flowability, the motor speed is increased to increase conveying efficiency.

[0061] One of the spiral components 23 has a connecting shaft 24 directly connected to the output shaft of the drive motor 31, which drives the spiral component 23 to rotate. The connecting shaft 24 of the other spiral component 23 passes through both ends of the protective cover 1 and is fitted with a gear set 34 and a transmission rod 32. When the drive motor 31 drives one connecting shaft 24 to rotate, the power is transmitted to the other connecting shaft 24 and the gear set 34 through the transmission rod 32, causing the two spiral components 23 to rotate synchronously. The transmission area 33 is enclosed by the cover 11, which ensures the safe operation of the gear set 34 and the transmission rod 32 and prevents external dust and debris from entering and affecting the transmission effect.

[0062] The spray shroud 44 is mounted on the curved plate 15, and a slot 43 on one side is used to install the sealing plate 41. The sealing plate 41 can be easily disassembled and installed, facilitating maintenance and cleaning of the spray assembly 4. A guide port 42 is provided on the sealing plate 41, which is connected to the air compressor assembly via a pipe. The air compressor assembly can adjust the output air pressure as needed to provide gas at different pressures to the spray assembly 4.

[0063] On the other side of the spray shroud 44 is the spray area 45, which has multiple spray holes 46. The size and distribution of these spray holes 46 are carefully designed to ensure that the sprayed pressurized gas evenly covers the outer surface of the spiral component 23. When material accumulates on the surface of the spiral component 23, the air compressor is activated, and high-pressure gas is sprayed onto the spiral component 23 through the spray holes 46, blowing the material off.

[0064] The adjustable valve at the feed inlet 12 and the flow monitoring device at the discharge outlet 13 enable precise control of the material conveying process. The feeding speed and quantity can be adjusted according to actual production needs, avoiding blockages caused by excessive feeding, while ensuring stable and accurate discharge, thus improving production efficiency and quality.

[0065] The transmission method employing a variable frequency drive motor 31, gear set 34, and transmission rod 32 enables the two spiral components 23 to rotate synchronously, ensuring the stability of the conveying process. The variable frequency function of the motor can flexibly adjust the speed according to the material characteristics and conveying requirements, improving the equipment's adaptability to different materials and reducing energy consumption.

[0066] The transmission area 33 is enclosed by the cover 11, which effectively protects the gear set 34 and the transmission rod 32, prevents external factors from interfering with and damaging the transmission system, extends the service life of the transmission components, and reduces the maintenance cost and downtime of the equipment.

[0067] The design of the spray assembly 4 allows high-pressure gas to be evenly sprayed onto the surface of the spiral component 23, promptly cleaning up any material buildup. The detachable design of the sealing plate 41 facilitates maintenance and cleaning, ensuring the normal operation of the spray assembly 4. This cleaning method effectively prevents material accumulation on the spiral component 23, improving the conveying efficiency and reliability of the equipment.

[0068] The above description is merely an embodiment of this utility model and is not intended to limit the scope of this utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principle of this utility model should be included within the scope of the claims of this utility model.

Claims

1. A bidirectional conveying spiral assembly, comprising a double spiral conveying assembly (2) for conveying materials, a protective cover (1) disposed outside the double spiral conveying assembly (2), and a drive assembly (3) installed on one side of the protective cover (1), wherein the drive assembly (3) drives the double spiral conveying assembly (2) to rotate within the protective cover (1) for conveying materials; Its features are: The double-helix conveying assembly (2) includes two helical components (23), which are symmetrically arranged and have a vertical plate (21) in the middle. One or more scraper plates (22) are fixed on both sides of the vertical plate (21) and are arranged at equal intervals. The scraper plates (22) are adapted to the helical area of ​​the helical components (23). The protective cover (1) includes a cover body (11), and there is a rotation gap (14) between the inner side of the cover body (11) and the spiral component (23). A bending plate (15) is installed at the rotation gap (14), and a spraying assembly (4) is provided at the bending plate (15) for cleaning the outer surface of the spiral component (23).

2. The bidirectional conveying spiral assembly according to claim 1, characterized in that: The top of the cover (11) is provided with a feeding port (12), and the bottom of the cover (11) is provided with a discharge port (13) on the side away from the feeding port (12).

3. The bidirectional conveying spiral assembly according to claim 1, characterized in that: The drive assembly (3) includes a drive motor (31), the output shaft of which is adapted to the connecting shaft (24) of one of the spiral components (23) for driving one of the spiral components (23) to rotate.

4. The bidirectional conveying spiral assembly according to claim 1, characterized in that: The connecting shaft (24) of the other spiral component (23) passes through both ends of the protective cover (1) and is equipped with a gear set (34) and a transmission rod (32). The other spiral component (23) drives one of the connecting shafts (24) to drive the transmission rod (32) to drive the other connecting shaft (24) and the gear set (34) to rotate via a drive motor (31).

5. A bidirectional conveying spiral assembly according to claim 1, characterized in that: One end of the cover (11) is provided with a transmission area (33), which is adapted to the gear set (34) and is covered by the cover (11).

6. The bidirectional conveying spiral assembly according to claim 1, characterized in that: The spray assembly (4) includes a spray shroud (44), a slot (43) is provided on one side of the spray shroud (44), and a sealing plate (41) is installed through the slot (43).

7. A bidirectional conveying spiral assembly according to claim 6, characterized in that: The sealing plate (41) has a flow guide (42) for connecting the air compressor assembly and conveying pressurized gas.

8. A bidirectional conveying spiral assembly according to claim 6, characterized in that: On the other side of the spray shroud (44), there is a spray area (45), and one or more spray holes (46) are provided in the spray area (45) for spraying pressurized gas.

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