Raw material screening machine for flame-retardant particle production

Abstract

The utility model discloses a raw material screening machine for flame-retardant particle production, and belongs to the technical field of flame-retardant particle raw material screening, the raw material screening machine comprises a rack, the surface of the rack is fixedly connected with a motor, the output end of the motor is fixedly connected with a rotating shaft, the rotating shaft is rotatably arranged in the rack, and the surface of the rotating shaft is fixedly connected with a first gear; a transmission shaft is rotationally arranged in the rack, the surface of the transmission shaft is fixedly connected with a second gear, the second gear is in meshed connection with the first gear, and meanwhile the surface of the transmission shaft and the surface of the rotating shaft are fixedly connected with cams; limiting rods are fixedly connected to the inner wall of the rack and slidably connected with a screen plate in a penetrating mode, and fixing rods are fixedly connected to the surface of the screen plate. According to the raw material screening machine for flame-retardant particle production, through the arrangement of the sliding column and the second spring, residues of raw materials on the surface of the discharging opening are effectively reduced, the purity and particle size consistency of finally screened flame-retardant particle raw materials are improved, and the product quality is improved.

Description

Technical Field

[0001] This utility model relates to the field of flame retardant granule raw material screening technology, specifically a raw material screening machine for flame retardant granule production. Background Technology

[0002] Flame-retardant granule raw materials are the basic materials used to prepare flame-retardant granules. Through specific formulations and processes, the final product acquires flame-retardant properties. The raw materials are diverse, encompassing various polymer materials, flame retardants, and additives. In the production of flame-retardant granules, precise screening of raw material particle size is crucial, as different particle sizes can significantly affect the flame-retardant properties and processing performance of the final product. Flame-retardant granule screening devices typically use vibrating screens. These screens are usually set up in multiple layers and placed vertically on the ground. The vibration of the screen is used to screen flame-retardant granules of different sizes. However, this vibrating screening method requires a certain amount of time to disperse the material through vibration, resulting in a longer screening time and a tendency for material accumulation and insufficient screening.

[0003] To overcome the above-mentioned defects, the prior art (Chinese patent application number CN202320415888.X, application date 2023-03-02) is a multi-stage screening device for flame-retardant materials. Through the cooperation between the screening cylinder one component, screening cylinder two, and screening cylinder three components, centrifugal force is used to accelerate the rapid screening of materials. This achieves the effect of the device being able to quickly screen flame-retardant particles by centrifugal force, solving the problem of long screening time in current methods.

[0004] Flame-retardant granular raw materials are conveyed to the feed port of the device by a conveying device. During the conveying process, these sticky granules are prone to sticking together and forming sticky agglomerates, which causes the raw materials to adhere to the inner wall of the feed port and cause blockage. During the use of the above device, it is impossible to avoid the blockage of the feed port, which leads to uneven distribution of raw materials on the screen plate, causing unqualified raw materials to be mixed into the granules, thereby reducing the final quality of the product. Utility Model Content

[0005] The purpose of this invention is to provide a raw material screening machine for the production of flame-retardant granules, thereby solving the problem mentioned in the background art where unavoidable blockage of the feed inlet leads to uneven distribution of raw materials on the screen plate, resulting in substandard raw materials being mixed into the granules and thus reducing the final product quality.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a raw material screening machine for flame-retardant pellet production, comprising a frame, an electric motor fixedly connected to the surface of the frame, and a rotating shaft fixedly connected to the output end of the electric motor, the rotating shaft being rotatably disposed inside the frame, and a first gear fixedly connected to the surface of the rotating shaft; a transmission shaft rotatably disposed inside the frame, and a second gear fixedly connected to the surface of the transmission shaft, the second gear being meshed with the first gear, and cams fixedly connected to both the surface of the transmission shaft and the surface of the rotating shaft; a limit rod fixedly connected to the inner wall of the frame, the limit rod being slidably connected through a screen plate, and a fixing rod fixedly connected to the surface of the screen plate; one end of a first spring fixedly connected to the lower surface of the fixing rod, and the other end of the first spring fixedly connected to the frame; a negative pressure box fixedly connected to the upper surface of the frame.

[0007] Preferably, a fixing plate is fixedly connected to the upper surface of the frame, and a connecting shaft is rotatably arranged inside the fixing plate, and belts are sleeved and connected to both the surface of the connecting shaft and the surface of the rotating shaft.

[0008] Preferably, a connecting rod is fixedly connected to the surface of the connecting shaft, and an upper magnet is fixedly connected to the surface of the connecting rod, with the upper magnets symmetrically distributed about the center of the connecting rod.

[0009] Preferably, a fixing block is fixedly connected to the upper surface of the frame, and a sliding column is slidably connected inside the fixing block. One end of a second spring is fixedly connected to the surface of the sliding column, and the other end of the second spring is fixedly connected to the frame.

[0010] Preferably, a lower magnet is fixedly connected to the surface of the sliding column, and the magnetic poles of the lower magnet are opposite to those of the upper magnet.

[0011] Preferably, a fixed frame is fixedly connected to the surface of the frame, and a movable shaft is rotatably arranged inside the fixed frame. A swing rod is fixedly connected to the surface of the movable shaft, and an absorption head is fixedly connected to the surface of the swing rod.

[0012] Preferably, a connecting frame is fixedly connected to the surface of the drive shaft, and one end of a support frame is movably connected to the surface of the connecting frame, and the other end of the support frame is sleeved and connected to the movable shaft.

[0013] Compared with the prior art, the beneficial effects of this utility model are as follows: The raw material screening machine for flame retardant granule production adopts a novel structural design, the specific details of which are as follows:

[0014] (1) The raw material screening machine for flame retardant granule production effectively reduces the residue of raw materials on the surface of the feed port by setting the sliding column and the No. 2 spring, thereby improving the purity and particle size consistency of the flame retardant granule raw materials and improving product quality.

[0015] Furthermore, it reduces the wear and corrosion of the discharge port, extends the service life of the discharge port and the frame, and reduces the maintenance cost of the device.

[0016] (2) The raw material screening machine for flame retardant granule production improves the absorption efficiency of dust inside the device by setting a negative pressure box and swing rod, which can effectively prevent dust from re-attaching to the screened raw materials, ensuring the purity of the raw materials for flame retardant granule production, and thus improving product quality.

[0017] Furthermore, it reduces the harm caused by dust to the respiratory system of operators, while improving the working efficiency of the equipment.

[0018] (3) The raw material screening machine for flame retardant granule production uses a fixed rod and a No. 1 spring to make the screen plate vibrate back and forth inside the frame, which ensures the stability and continuity of the screening process, while improving the screening accuracy and reducing the screening error caused by the instability of the screen plate. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the connection structure between the frame and the motor of this utility model;

[0020] Figure 2 This is a schematic diagram of the connection structure between the fixed frame and the movable shaft of this utility model;

[0021] Figure 3 This is a schematic diagram of the connection structure between the fixing rod and the No. 1 spring of this utility model;

[0022] Figure 4 This is a schematic diagram of the connection structure between gear No. 1 and gear No. 2 of this utility model;

[0023] Figure 5 This is a schematic diagram of the connection structure between the sliding column and the fixed block of this utility model;

[0024] Figure 6 This is a schematic diagram of the connection structure between the drive shaft and the connecting frame of this utility model;

[0025] Figure 7 This is a schematic diagram of the connection structure between the swing rod and the absorption head of this utility model.

[0026] In the diagram: 1. Frame; 2. Motor; 3. Rotating shaft; 4. Cam; 5. Limiting rod; 6. Screen plate; 7. Fixing rod; 8. Spring No. 1; 9. Gear No. 1; 10. Gear No. 2; 11. Drive shaft; 12. Connecting shaft; 13. Fixing plate; 14. Connecting rod; 15. Upper magnet; 16. Sliding column; 17. Lower magnet; 18. Fixing block; 19. Spring No. 2; 20. Connecting frame; 21. Fixing frame; 22. Moving shaft; 23. Support frame; 24. Swinging rod; 25. Absorption head; 26. Negative pressure box. Detailed Implementation

[0027] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0028] Example 1: By incorporating the electric motor 2, spring 8, and sieve plate 6, the working efficiency of the device is improved, such as... Figures 1-3 As shown: It includes a frame 1, a motor 2 is fixedly connected to the surface of the frame 1, and a rotating shaft 3 is fixedly connected to the output end of the motor 2. The rotating shaft 3 is rotatably disposed inside the frame 1. At the same time, a first gear 9 is fixedly connected to the surface of the rotating shaft 3. A transmission shaft 11 is rotatably disposed inside the frame 1, and a second gear 10 is fixedly connected to the surface of the transmission shaft 11. The second gear 10 and the first gear 9 are meshed. Cams 4 are fixedly connected to both the surface of the transmission shaft 11 and the surface of the rotating shaft 3. A limit rod 5 is fixedly connected to the inner wall of the frame 1, and a screen plate 6 is slidably connected to the limit rod 5. A fixing rod 7 is fixedly connected to the surface of the screen plate 6. One end of a first spring 8 is fixedly connected to the lower surface of the fixing rod 7, and the other end of the first spring 8 is fixedly connected to the frame 1. A negative pressure box 26 is fixedly connected to the upper surface of the frame 1.

[0029] The raw materials for flame-retardant granule production to be screened are conveyed to the feeding port on the surface of the frame 1 through the conveying equipment, and the motor 2 is started, which drives the first gear 9 on the surface of the rotating shaft 3 to rotate. The first gear 9 is meshed with the second gear 10, so that the transmission shaft 11 rotates inside the frame 1. When the cam 4 on the surface of the rotating shaft 3 contacts the fixed rod 7, the fixed rod 7 drives the screen plate 6 to slide on the surface of the limit rod 5. At the same time, the first spring 8 retracts towards the inner wall of the frame 1. When the cam 4 moves away from the fixed rod 7, the first spring 8 drives the fixed rod 7 back to the initial position, thereby realizing the reciprocating motion of the screen plate 6, ensuring the stability and continuity of the screening process, helping to improve the screening accuracy, reducing the screening error caused by the instability of the screen plate 6, and improving the stability of the device.

[0030] In Example 2, unlike Example 1, the use of the fixed plate 13, connecting shaft 12, and sliding column 16 reduces the amount of raw material residue on the inner wall of the device's discharge port. Figures 4-5As shown: A fixed plate 13 is fixedly connected to the upper surface of the frame 1, and a connecting shaft 12 is rotatably installed inside the fixed plate 13. Belts are sleeved and connected to both the surface of the connecting shaft 12 and the surface of the rotating shaft 3. A connecting rod 14 is fixedly connected to the surface of the connecting shaft 12, and an upper magnet 15 is fixedly connected to the surface of the connecting rod 14. The upper magnets 15 are symmetrically distributed about the center of the connecting rod 14. A fixed block 18 is fixedly connected to the upper surface of the frame 1, and a sliding column 16 is slidably connected inside the fixed block 18. One end of a second spring 19 is fixedly connected to the surface of the sliding column 16, and the other end of the second spring 19 is fixedly connected to the frame 1. A lower magnet 17 is fixedly connected to the surface of the sliding column 16, and the magnetic poles of the lower magnet 17 are opposite to those of the upper magnet 15.

[0031] When the motor 2 rotates via the belt, it drives the connecting shaft 12 to rotate. As the connecting shaft 12 rotates, it drives the upper magnet 15 on the surface of the connecting rod 14 to rotate. When the upper magnet 15 is parallel to the lower magnet 17, the magnetic poles on the surface of the lower magnet 17 are opposite to those on the surface of the upper magnet 15, causing the sliding column 16 to slide towards the surface of the frame 1. At the same time, the second spring 19 retracts towards the surface of the frame 1, thereby realizing the impact of the sliding column 16 on the frame 1. This effectively reduces the residue of raw materials on the inner wall of the feed port, improves the purity and particle size consistency of the final screened flame-retardant granules, enhances product quality, reduces the wear and corrosion of the feed port, extends the service life of the feed port and the frame 1, and reduces the maintenance cost of the device.

[0032] Example 3: In this example, unlike Example 2, the installation of the fixing frame 21, absorption head 25, and negative pressure box 26 improves environmental protection. Figures 6-7 As shown: A fixed frame 21 is fixedly connected to the surface of the frame 1, and a movable shaft 22 is rotatably arranged inside the fixed frame 21. A swing rod 24 is fixedly connected to the surface of the movable shaft 22, and an absorption head 25 is fixedly connected to the surface of the swing rod 24. A connecting frame 20 is fixedly connected to the surface of the transmission shaft 11, and one end of a support frame 23 is movably connected to the surface of the connecting frame 20. The other end of the support frame 23 is sleeved and connected to the movable shaft 22.

[0033] When the drive shaft 11 rotates, it drives the connecting frame 20 to rotate. Through the support frame 23, the rotation of the connecting frame 20 drives the support frame 23, causing the moving shaft 22 to rotate inside the fixed frame 21. At the same time, the moving shaft 22 drives the swing rod 24 to swing, causing the absorption head 25 to swing back and forth inside the frame 1. The absorbed dust is collected in the negative pressure box 26 through the pipe, which can effectively prevent the dust from re-adhering to the screened raw materials, ensuring the purity of the raw materials for flame retardant granule production, and thus improving product quality.

[0034] The above is the entire working process of the device, and all contents not described in detail in this specification are existing technologies known to those skilled in the art.

[0035] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A raw material screening machine for flame retardant pellet production, comprising a frame (1), wherein an electric motor (2) is fixedly connected to the surface of the frame (1), and a rotating shaft (3) is fixedly connected to the output end of the electric motor (2), and the rotating shaft (3) is rotatably disposed inside the frame (1), and a first gear (9) is fixedly connected to the surface of the rotating shaft (3). Its features are: The frame (1) is rotatably equipped with a drive shaft (11), and a second gear (10) is fixedly connected to the surface of the drive shaft (11). The second gear (10) is meshed with the first gear (9). At the same time, a cam (4) is fixedly connected to both the surface of the drive shaft (11) and the surface of the rotating shaft (3). The inner wall of the frame (1) is fixedly connected to a limiting rod (5), and the limiting rod (5) is slidably connected through a sieve plate (6), and a fixing rod (7) is fixedly connected to the surface of the sieve plate (6). The lower surface of the fixed rod (7) is fixedly connected to one end of a No. 8 spring, and the other end of the No. 8 spring is fixedly connected to the frame (1). A negative pressure box (26) is fixedly connected to the upper surface of the frame (1).

2. A raw material screening machine for producing a flame-retardant particle according to claim 1, characterized in that: A fixing plate (13) is fixedly connected to the upper surface of the frame (1), and a connecting shaft (12) is rotatably provided inside the fixing plate (13), and belts are sleeved on the surface of the connecting shaft (12) and the surface of the rotating shaft (3).

3. A raw material screening machine for producing a flame-retardant particle according to claim 2, characterized in that: A connecting rod (14) is fixedly connected to the surface of the connecting shaft (12), and an upper magnet (15) is fixedly connected to the surface of the connecting rod (14), and the upper magnet (15) is symmetrically distributed about the center of the connecting rod (14).

4. A raw material screening machine for producing a flame-retardant particle according to claim 3, characterized in that: A fixing block (18) is fixedly connected to the upper surface of the frame (1), and a sliding column (16) is slidably connected inside the fixing block (18). One end of a second spring (19) is fixedly connected to the surface of the sliding column (16), and the other end of the second spring (19) is fixedly connected to the frame (1).

5. A raw material screening machine for producing a flame-retardant particle according to claim 4, characterized in that: The sliding column (16) is fixedly connected to a lower magnet (17), and the magnetic poles on the surface of the lower magnet (17) are opposite to the magnetic poles on the surface of the upper magnet (15).

6. A raw material screening machine for producing a flame-retardant particle according to claim 1, characterized in that: The frame (1) is fixedly connected to a fixed frame (21), and a movable shaft (22) is rotatably arranged inside the fixed frame (21). A swing rod (24) is fixedly connected to the surface of the movable shaft (22), and an absorption head (25) is fixedly connected to the surface of the swing rod (24).

7. A raw material screening machine for producing a flame-retardant particle according to claim 6, characterized in that: The drive shaft (11) is fixedly connected to a connecting frame (20), and one end of a support frame (23) is movably connected to the surface of the connecting frame (20), and the other end of the support frame (23) is sleeved and connected to the movable shaft (22).

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