Engineering plastic processing suction feeding device with filtering function

Abstract

The application discloses a kind of engineering plastics processing suction material feeding devices with filtering function, it is related to conveying equipment technical field, including suction material cylinder, bottom plate, suction material air pump, suction material cylinder is equipped with connecting pipe, suction material cylinder is rotatably installed between connecting pipe, suction material air pump is fixedly connected with installation pipe, rotatably installed with swivel pipe in installation pipe, swivel drive assembly is arranged between swivel pipe and installation pipe, and swivel pipe is connected with connecting pipe;Interval groove is arranged in the side wall of suction material cylinder, the end of bottom plate and suction material cylinder is connected, filter hole one and filter hole two are respectively arranged on suction material cylinder and bottom plate, arc-shaped cooperation frame is arranged in interval groove, one end of arc-shaped cooperation frame close to bottom plate is connected with adhering sector plate, arc-shaped cooperation frame and adhering sector plate cover filter hole one and filter hole two parts when suction material feeding by swivel drive assembly, so that large size plastic particles that block is separated, realize filtering suction material while ensuring suction material efficiency.

Description

Technical Field

[0001] This invention relates to the field of conveying equipment technology, specifically to a material feeding device for engineering plastics processing with a filtering function. Background Technology

[0002] Feeders are widely used in injection molding, extrusion and other fields for feeding granular raw materials. They have the advantages of being easy to use and having a long conveying distance. They are widely used for pneumatic conveying, are simple to operate and have high safety.

[0003] When the existing engineering plastics processing equipment uses a material feeding device, if there are high requirements for the uniformity of particle size, the material feeding device is prone to clogging due to the unevenness of plastic particles. This causes the material feeding efficiency to gradually decrease, and eventually manual intervention is required to clean the filter device repeatedly, affecting the plastic material feeding efficiency and processing efficiency. Summary of the Invention

[0004] The purpose of this invention is to provide an engineering plastics processing feeding device with a filtering function to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution:

[0006] A material feeding device for engineering plastics processing with filtering function includes a suction cylinder, a base plate, a suction air pump, and a feeding pipe. The suction cylinder is coaxially mounted with a connecting pipe, and the suction cylinder and the connecting pipe are rotatably mounted together. The suction air pump is fixedly connected to an installation pipe, and a rotary pipe is rotatably mounted inside the installation pipe. A rotary drive assembly is provided between the rotary pipe and the installation pipe, and the rotary pipe is connected to the connecting pipe.

[0007] The suction cylinder is composed of two semi-circular parts. A spacer groove is provided in the side wall of the suction cylinder. The bottom plate is connected to the end of the suction cylinder. Filter holes one is evenly arranged on the side wall of the suction cylinder. Filter holes two are arranged in a circular pattern on the bottom plate. An arc-shaped fitting frame is fitted in the spacer groove. A fitting fan-shaped plate is connected to one end of the arc-shaped fitting frame near the bottom plate. The length of the arc-shaped fitting frame is greater than the width of the filter holes one along the axial direction of the suction cylinder. The radius of the fitting fan-shaped plate is greater than the radius of the circular arrangement of the filter holes two. The arc-shaped fitting frame and the fitting fan-shaped plate are fixedly connected to the inner wall of the connecting pipe after being combined.

[0008] As a further embodiment of the present invention: a positioning bearing is fixedly provided on the outer side of the end of the connecting pipe, and rollers are installed in a ring distribution inside the positioning bearing; a snap-fit ​​groove is provided on the inner side of the end of the suction cylinder, and the snap-fit ​​groove cooperates with the positioning bearing.

[0009] As a further embodiment of the present invention: a soft rubber pad is installed at one end of the arc-shaped mating frame facing the outer side of the spacer groove. After the soft rubber pad and the arc-shaped mating frame are combined, they are slidably installed with the spacer groove. The bonding fan-shaped plate has a soft rubber pad of the same material on the contact surface with the base plate.

[0010] As a further embodiment of the present invention: an mounting plate is provided on the arc-shaped fitting frame, a positioning step is provided on the inner side of the connecting pipe, the end of the mounting plate cooperates with the positioning step, and the mounting plate and the connecting pipe are fixedly connected by bolts.

[0011] As a further embodiment of the present invention: a flexible connecting assembly is provided between the rotary tube and the connecting tube. The flexible connecting assembly includes a connecting ring disposed inside the connecting tube and the rotary tube. Multiple elastic rods are evenly inserted between the connecting ring inside the connecting tube and the connecting ring inside the rotary tube. Each end of the elastic rod is fitted with a cooperating spring between the connecting ring and the connecting tube. A threaded sleeve one and a threaded sleeve two are respectively provided between the connecting tube and the rotary tube. The connecting ring and the elastic rods are disposed between the threaded sleeve one and the threaded sleeve two.

[0012] As a further embodiment of the present invention: the rotary drive assembly includes an external gear ring disposed on the outside of the rotary tube, a closed sleeve is fixedly connected to the end of the mounting tube, a drive motor is fixedly installed inside the closed sleeve, the drive motor is connected to a drive gear, and the drive gear meshes with the external gear ring.

[0013] As a further embodiment of the present invention: a connecting flange is provided at the end of the rotary tube, the rotary tube is rotatably installed between the connecting flange and the mounting tube, a fitting ring is provided on both sides of the connecting flange, a plurality of contact balls are rolled between the connecting flange and the fitting ring, a limit ring is fixedly provided on the inner side of the mounting tube, and the rotary tube is movably installed between the end of the mounting tube and the limit ring in conjunction with the connecting flange.

[0014] As a further embodiment of the present invention: a gap is provided between the end of the suction cylinder located inside the interval groove and the bottom plate, and the bottom plate and the end of the suction cylinder are fixedly connected by bolts.

[0015] Compared with the prior art, the beneficial effects of the present invention are:

[0016] (1) The entire suction cylinder is rotated and installed on the connecting pipe, and the connecting pipe and the rotary pipe are rotated and installed with the rotary drive assembly. The connecting pipe is set with an arc-shaped fitting frame on the inner side of the suction cylinder and fits against the inner side of the suction cylinder. When suctioning, after the outer suction cylinder is inserted into the plastic particles, due to the resistance between the plastic particles and filter hole one and filter hole two, when the rotary drive assembly drives the connecting pipe to rotate, the connecting pipe and the arc-shaped fitting frame will rotate relative to the suction cylinder. When the arc-shaped fitting frame sweeps across the inner wall of the suction cylinder, the negative pressure effect of filter hole one disappears, thereby causing the large-sized plastic particles blocked in filter hole one to detach from filter hole one, thus achieving suction and filtration while avoiding clogging of filter hole one and reducing the suction and feeding efficiency.

[0017] (2) In order to ensure that the arc-shaped fitting frame fits against the inner wall of the suction cylinder during rotation, thereby relieving the negative pressure adsorption effect of the filter hole, a spacer groove is set in the side wall of the suction cylinder, and the arc-shaped fitting frame is inserted into the spacer groove. When the arc-shaped fitting frame rotates, it can keep fitting against the filter hole on the side wall of the suction cylinder, so that the large plastic particles blocked in the filter hole can be removed.

[0018] (3) The material feeding device can be installed in conjunction with a three-axis moving platform to feed large-capacity containers containing plastic granules. To reduce damage caused by rigid contact between the material feeding cylinder and the container during movement, the material feeding cylinder and the connecting pipe are flexibly connected to the rotary pipe through a flexible connecting component. When the material feeding cylinder and the connecting pipe deviate or rotate relative to the rotary pipe, the rotary drive component can transmit the rotary drive force to the material feeding cylinder, thereby achieving anti-clogging control of filter holes one and filter holes two on the material feeding cylinder. Flexible connection is achieved by using an elastic rod and a cooperating spring, while simultaneously achieving rotary drive connection of the connecting pipe. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall structure of the present invention.

[0020] Figure 2 This is a schematic diagram of the internal structure of the present invention.

[0021] Figure 3 This is a schematic diagram of the internal structure of the suction cylinder in this invention.

[0022] Figure 4 This is a cross-sectional view of the suction cylinder in this invention.

[0023] Figure 5 This is a schematic diagram of the arc-shaped mating frame and the connecting structure of the fitting fan ring in this invention.

[0024] Figure 6 This is a schematic diagram of the flexible connection component in this invention.

[0025] Figure 7 This is a schematic diagram of the rotary tube in this invention.

[0026] Figure 8 This is a schematic diagram of the rotary drive assembly in this invention.

[0027] In the diagram: 1. Suction cylinder; 10. Spacing groove; 100. Snap-fit ​​groove; 11. Filter hole one; 12. Base plate; 13. Filter hole two; 14. Mounting plate; 15. Arc-shaped mating frame; 16. Soft rubber pad; 17. Positioning bearing; 18. Fitting fan-shaped plate; 2. Connecting pipe; 20. Positioning step; 3. Flexible connecting assembly; 30. Threaded sleeve one; 31. Threaded sleeve two; 32. Connecting ring; 33. Elastic rod; 34. Fitting spring; 4. Rotary drive assembly; 40. Rotary pipe; 41. External gear ring; 42. Connecting flange; 43. Fitting ring; 44. Contact ball; 45. Enclosed sleeve; 46. Drive motor; 47. Drive gear; 5. Mounting pipe; 50. Limiting ring; 6. Suction air pump; 7. Feeding pipe. Detailed Implementation

[0028] The technical solution of the present invention will be further described in detail below with reference to specific embodiments.

[0029] like Figure 1 , Figure 2 , Figure 3 As shown, an engineering plastic processing suction and feeding device with filtering function includes a suction cylinder 1, a base plate 12, a suction air pump 6, and a feeding pipe 7. The suction cylinder 1 is coaxially mounted with a connecting pipe 2, and the suction cylinder 1 and the connecting pipe 2 are rotatably mounted together. The suction air pump 6 is fixedly connected to an installation pipe 5, and a rotary pipe 40 is rotatably mounted inside the installation pipe 5. A rotary drive assembly 4 is provided between the rotary pipe 40 and the installation pipe 5, and the rotary pipe 40 is connected to the connecting pipe 2. The suction cylinder 1 is composed of two semi-circular parts. A spacer groove 10 is provided in the side wall of the suction cylinder 1. The bottom plate 12 is connected to the end of the suction cylinder 1. Filter holes 11 are evenly arranged on the side wall of the suction cylinder 1. Filter holes 13 are arranged in a circular pattern on the bottom plate 12. An arc-shaped fitting frame 15 is fitted in the spacer groove 10. A fitting fan-shaped plate 18 is connected to one end of the arc-shaped fitting frame 15 near the bottom plate 12. The length of the arc-shaped fitting frame 15 is greater than the width of the filter holes 11 arranged along the axial direction of the suction cylinder 1. The radius of the fitting fan-shaped plate 18 is greater than the circular arrangement radius of the filter holes 13. The arc-shaped fitting frame 15 and the fitting fan-shaped plate 18 are fixedly connected to the inner wall of the connecting pipe 2 after being combined.

[0030] Specifically, the suction cylinder 1 is composed of two semi-circular parts to form a complete cylinder structure, which is assembled by hidden bolts. The end of the suction cylinder 1 is closed by the bottom plate 12. At the same time, filter holes 11 and 13 are respectively set on the side wall of the suction cylinder 1 and the bottom plate 12. Combined with the suction air pump 6 set at the top, the plastic particles are fed and sucked up, and the filtration effect is achieved, screening particles with a diameter larger than the standard requirements.

[0031] More specifically, during material feeding, particles larger than the standard size will be adsorbed and blocked in filter holes 11 and 13 under the negative pressure environment inside the suction cylinder 1, thereby affecting the overall material feeding flow rate of the device and reducing processing efficiency. To solve this problem, the suction cylinder 1 is rotatably mounted on the connecting pipe 2. The connecting pipe 2 and the rotary pipe 40 are rotatably mounted with the rotary drive assembly 4. An arc-shaped fitting frame 15 is set on the inner side of the suction cylinder 1 and fits against the inner side of the suction cylinder 1. When suctioning, after the outer suction cylinder 1 is inserted into the plastic particles, due to the resistance between the plastic particles and the filter holes 11 and 13, combined with the rotation of the connecting pipe 2 driven by the rotary drive assembly 4, the connecting pipe 2 and the arc-shaped fitting frame 15 will rotate relative to the suction cylinder 1. When the arc-shaped fitting frame 15 sweeps across the inner wall of the suction cylinder 1, the negative pressure effect at the filter hole 11 disappears, thereby causing the large-sized plastic particles blocked at the filter hole 11 to detach from the filter hole 11. This achieves suction and filtration while avoiding clogging of the filter hole 11 and reducing the suction and feeding efficiency.

[0032] Meanwhile, since the arc-shaped fitting frame 15 is in contact with the inner wall of the suction cylinder 1, when the arc-shaped fitting frame 15 rotates around the axis under the drive of the rotary drive assembly 4, it will also exert a force on the suction cylinder 1. Under the combined action of the frictional resistance of the outer plastic particles, the suction cylinder 1 will also rotate slightly around its own axis. The advantage of installing the suction cylinder 1 in this way is that when the arc-shaped fitting frame 15 rotates and fits with the inside of the suction cylinder 1, after the large plastic particles are separated from the filter hole 11, the slight rotation of the suction cylinder 1 itself causes the separated large plastic particles to be displaced relative to the suction cylinder 1. This avoids the filter hole 11 from re-adsorbing the previously large plastic particles onto the filter hole 11 after the arc-shaped fitting frame 15 rotates away, thus preventing further blockage of the filter hole 11.

[0033] Similarly, the filter hole 13 on the base plate 12, together with the attached fan-shaped plate 18, sucks up and feeds the plastic particles below the base plate 12, preventing the filter hole 13 from being blocked during the feeding process, thus ensuring the feeding efficiency of the base plate 12. This is the same anti-clogging principle as the filter hole 11 mentioned above.

[0034] More specifically, in order to ensure that the arc-shaped fitting frame 15 is in contact with the inner wall of the suction cylinder 1 during rotation, thereby relieving the negative pressure adsorption effect at the filter hole 11, a spacer groove 10 is provided in the side wall of the suction cylinder 1, and the arc-shaped fitting frame 15 is inserted into the spacer groove 10. When the arc-shaped fitting frame 15 rotates, it can maintain contact with the filter hole 11 on the side wall of the suction cylinder 1, so that the large plastic particles blocked at the filter hole 11 are detached.

[0035] Furthermore, such as Figure 3 , Figure 4 As shown, a positioning bearing 17 is fixedly installed on the outer side of the end of the connecting pipe 2. Rollers are installed in a ring inside the positioning bearing 17. A snap-fit ​​groove 100 is provided on the inner side of the end of the suction cylinder 1. The snap-fit ​​groove 100 and the positioning bearing 17 cooperate with each other.

[0036] Specifically, the suction cylinder 1 is composed of two semi-circular components, which are engaged with the positioning bearing 17 on the connecting pipe 2 through the inner snap-fit ​​groove 100 and rotated. In order to reduce the rotational resistance between the suction cylinder 1 and the connecting pipe 2, rollers are arranged in a ring on the positioning bearing 17. The rollers are rotated between the snap-fit ​​groove 100 to avoid excessive resistance between the connecting pipe 2 and the suction cylinder 1 during rotation, which would cause the connecting pipe 2 and the arc-shaped mating frame 15 to rotate synchronously with the suction cylinder 1 and thus fail to clean the large plastic particles on the side wall of the suction cylinder 1.

[0037] Furthermore, such as Figure 3 As shown, a soft rubber pad 16 is installed on one end of the arc-shaped mating frame 15 facing the outer side of the spacer groove 10. After the soft rubber pad 16 is combined with the arc-shaped mating frame 15, it is slidably installed with the spacer groove 10. The bonding fan-shaped plate 18 is provided with a soft rubber pad 16 of the same material on the contact surface with the base plate 12.

[0038] Specifically, when plastic particles get stuck in the filter hole 11, it may cause the arc-shaped mounting bracket 15 to jam between itself and the spacer groove 10. This causes the arc-shaped mounting bracket 15 to rotate along with the entire suction cylinder 1, making it impossible to clean the large plastic particles that are blocking the filter hole 11. By placing a soft rubber pad 16 on the outside of the arc-shaped mounting bracket 15, the probability of the arc-shaped mounting bracket 15 getting stuck in the filter hole 11 is reduced. During use, by repeatedly controlling the arc-shaped mounting bracket 15 to rotate periodically, the probability of the arc-shaped mounting bracket 15 getting stuck in the spacer groove 10 is further reduced, thus reducing the probability of manual intervention to handle the fault.

[0039] Furthermore, such as Figure 3As shown, the arc-shaped mounting bracket 15 is provided with a mounting plate 14, and the inner side of the connecting pipe 2 is provided with a positioning step 20. The end of the mounting plate 14 cooperates with the positioning step 20, and the mounting plate 14 and the connecting pipe 2 are fixedly connected by bolts.

[0040] Specifically, the mounting plate 14 is fixedly installed on the inner side of the connecting pipe 2, thereby installing the arc-shaped fitting frame 15 and the fitting fan-shaped plate 18. In order to facilitate the fixed connection between the mounting plate 14 and the connecting pipe 2, a positioning step 20 is set on the inner side of the connecting pipe 2. The mounting plate 14 is inserted into the inner side of the connecting pipe 2 and abuts against the positioning step 20. After finding the bolt hole for fixed installation with the mounting plate 14, the mounting plate 14 is fixedly installed with bolts.

[0041] Furthermore, such as Figure 6 As shown, a flexible connecting component 3 is provided between the rotary tube 40 and the connecting tube 2. The flexible connecting component 3 includes a connecting ring 32 disposed inside the connecting tube 2 and the rotary tube 40. Multiple elastic rods 33 are evenly inserted between the connecting ring 32 inside the connecting tube 2 and the connecting ring 32 inside the rotary tube 40. Each end of the elastic rod 33 is fitted with a cooperating spring 34 between it and the connecting ring 32. A threaded sleeve 1 30 and a threaded sleeve 2 31 are respectively provided between the connecting tube 2 and the rotary tube 40. The connecting ring 32 and the elastic rods 33 are disposed between the threaded sleeve 1 30 and the threaded sleeve 2 31.

[0042] Specifically, the material feeding device can be mounted in conjunction with a three-axis moving platform to feed large-capacity containers containing plastic granules. To reduce damage caused by rigid contact between the suction cylinder 1 and the container during movement, the suction cylinder 1 and the connecting pipe 2 are flexibly connected to the rotary pipe 40 via a flexible connecting component 3. When the suction cylinder 1 and the connecting pipe 2 shift or deflect relative to the rotary pipe 40, the rotary drive component 4 can transmit the rotary drive force to the suction cylinder 1, thereby preventing clogging of the filter holes 11 and 13 on the suction cylinder 1. A flexible connection is achieved using an elastic rod 33 and a cooperating spring 34, simultaneously enabling the rotary drive connection of the connecting pipe 2. Furthermore, to prevent the plastic granules from getting stuck between the elastic rod 33 and the cooperating spring 34, the area between the connecting pipe 2 and the rotary pipe 40 is sealed using threaded sleeves 30 and 31, ensuring smooth feeding of the plastic granules.

[0043] Furthermore, such as Figure 7 , Figure 8As shown, the rotary drive assembly 4 includes an external gear ring 41 disposed on the outside of the rotary tube 40, a closed sleeve 45 fixedly connected to the end of the mounting tube 5, a drive motor 46 fixedly installed inside the closed sleeve 45, a drive gear 47 connected to the drive motor 46, and the drive gear 47 meshing with the external gear ring 41.

[0044] Furthermore, such as Figure 7 , Figure 8 As shown, the end of the rotary tube 40 is provided with a connecting flange 42. The rotary tube 40 is rotatably installed between the connecting flange 42 and the mounting tube 5. The two sides of the connecting flange 42 are provided with fitting rings 43. Multiple contact balls 44 are rolled between the connecting flange 42 and the fitting rings 43. A limit ring 50 is fixedly provided on the inner side of the mounting tube 5. The rotary tube 40 is movably installed between the end of the mounting tube 5 and the limit ring 50, in conjunction with the connecting flange 42.

[0045] Specifically, the rotary tube 40 rotates via the drive gear 47 and the external gear ring 41. Fitting rings 43 and contact balls 44 are provided on both sides of the connecting flange 42 to reduce the rotational resistance of the rotary tube 40. The limiting ring 50 limits the axial displacement of the rotary tube 40. At the same time, the rotary tube 40 can move back and forth between the mounting tube 5 and the limiting ring 50, thereby providing axial displacement margin for the end suction cylinder 1 and ensuring the safe use of the suction cylinder 1 during the material feeding process.

[0046] Furthermore, such as Figure 3 As shown, a gap is provided between the end of the suction cylinder 1 located inside the spacer groove 10 and the bottom plate 12, and the bottom plate 12 and the end of the suction cylinder 1 are fixedly connected by bolts.

[0047] Specifically, the gap between the end of the suction cylinder 1 located inside the partition groove 10 and the bottom plate 12 is provided so that the plastic particles accumulated in the partition groove 10 can be transferred to the inner area of ​​the suction cylinder 1 along the gap, avoiding accumulation and blockage in the partition groove 10, thereby ensuring the efficiency of suction and feeding.

[0048] It should also be noted that the suction cylinder 1 and the base plate 12 are set together and can be replaced according to the size of the plastic particles. When the suction cylinder 1 needs to be replaced, the base plate 12 is first removed from the suction cylinder 1, and then the bolts between the two semicircles that make up the suction cylinder 1 are removed, thereby completing the removal and replacement of the suction cylinder 1.

[0049] The working principle of this invention embodiment is as follows:

[0050] like Figures 1-8As shown, during material feeding, particles larger than the standard size will be adsorbed and blocked in filter holes 11 and 13 under the negative pressure environment inside the suction cylinder 1, thereby affecting the overall material feeding flow rate of the device and reducing processing efficiency. The suction cylinder 1 is rotatably mounted on the connecting pipe 2. The connecting pipe 2 and the rotary pipe 40 are rotatably mounted with the rotary drive assembly 4. An arc-shaped fitting frame 15 is set on the inner side of the suction cylinder 1 via the connecting pipe 2 and fits against the inner side of the suction cylinder 1. When suctioning, after the outer suction cylinder 1 is inserted into the plastic particles, due to the resistance between the plastic particles and the filter holes 11 and 13, combined with the rotary drive assembly 4 driving the connecting pipe 2 to rotate, the connecting pipe 2 and the arc-shaped fitting frame 15 will rotate relative to the suction cylinder 1. When the arc-shaped fitting frame 15 sweeps across the inner wall of the suction cylinder 1, the negative pressure effect at the filter hole 11 disappears, thereby causing the large-sized plastic particles blocked at the filter hole 11 to detach from the filter hole 11. This achieves suction and filtration while avoiding clogging of the filter hole 11 and reducing the suction and feeding efficiency. Meanwhile, since the arc-shaped fitting frame 15 is in contact with the inner wall of the suction cylinder 1, when the arc-shaped fitting frame 15 rotates around the axis under the drive of the rotary drive assembly 4, it will also exert a force on the suction cylinder 1. Under the combined action of the frictional resistance of the outer plastic particles, the suction cylinder 1 will also rotate slightly around its own axis. The advantage of installing the suction cylinder 1 in this way is that when the arc-shaped fitting frame 15 rotates and fits with the inside of the suction cylinder 1, after the large plastic particles are separated from the filter hole 11, the slight rotation of the suction cylinder 1 itself causes the separated large plastic particles to be displaced, thus preventing the filter hole 11 from re-adsorbing the previously large plastic particles after the arc-shaped fitting frame 15 rotates away, and avoiding further clogging of the filter hole 11. A spacer groove 10 is provided inside the side wall of the suction cylinder 1, and an arc-shaped fitting frame 15 is inserted into the spacer groove 10. When the arc-shaped fitting frame 15 rotates, it can maintain contact with the filter hole 11 on the side wall of the suction cylinder 1, so that large plastic particles blocked in the filter hole 11 can be detached. The filter hole 13 provided on the bottom plate 12, together with the fan-shaped plate 18, sucks up and feeds the plastic particles below the bottom plate 12, avoiding the filter hole 13 from being blocked during the suction and feeding process, and ensuring the suction and feeding efficiency of the bottom plate 12. The anti-clogging principle of the filter hole 11 is the same as that of the filter hole 11.

[0051] The above description is merely a preferred embodiment of the present invention and is not intended to limit the invention. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present invention should be included within the scope of protection of the present invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0052] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A material feeding device for engineering plastics processing with filtering function, comprising a suction cylinder (1), a base plate (12), a suction air pump (6), and a feeding pipe (7), characterized in that, The suction cylinder (1) is coaxially mounted with a connecting pipe (2), the suction cylinder (1) and the connecting pipe (2) are rotatably mounted together, the suction air pump (6) is fixedly connected with an installation pipe (5), a rotary pipe (40) is rotatably mounted inside the installation pipe (5), a rotary drive assembly (4) is provided between the rotary pipe (40) and the installation pipe (5), and the rotary pipe (40) is connected to the connecting pipe (2); The suction cylinder (1) is composed of two semi-circular parts. A spacer groove (10) is provided inside the side wall of the suction cylinder (1). The bottom plate (12) is connected to the end of the suction cylinder (1). Filter holes one (11) are evenly arranged on the side wall of the suction cylinder (1). Filter holes two (13) are arranged in a circular pattern on the bottom plate (12). An arc-shaped fitting frame (15) is fitted inside the spacer groove (10). The arc-shaped fitting frame (15) is fitted against the inner side of the suction cylinder (1). The connecting pipe (2) The arc-shaped fitting frame (15) is rotatably installed relative to the suction cylinder (1). The arc-shaped fitting frame (15) is connected to a fitted fan-shaped plate (18) at one end near the bottom plate (12). The length of the arc-shaped fitting frame (15) is greater than the width of the filter hole one (11) arranged along the axial direction of the suction cylinder (1). The radius of the fitted fan-shaped plate (18) is greater than the circular arrangement radius of the filter hole two (13). The arc-shaped fitting frame (15) and the fitted fan-shaped plate (18) are combined and fixedly connected to the inner wall of the connecting pipe (2). The arc-shaped fitting frame (15) has a soft rubber pad (16) installed at one end facing the outside of the spacer groove (10). The soft rubber pad (16) and the arc-shaped fitting frame (15) are slidably fitted together with the spacer groove (10). The fitting fan-shaped plate (18) has a soft rubber pad (16) of the same material on its contact surface with the base plate (12).

2. The engineering plastics processing material feeding device with filtering function according to claim 1, characterized in that, A positioning bearing (17) is fixedly installed on the outer side of the end of the connecting pipe (2). Rollers are installed in a ring inside the positioning bearing (17). A snap-fit ​​groove (100) is provided on the inner side of the end of the suction cylinder (1). The snap-fit ​​groove (100) and the positioning bearing (17) cooperate with each other.

3. The engineering plastics processing material feeding device with filtering function according to claim 1, characterized in that, The arc-shaped mounting frame (15) is provided with a mounting plate (14), and the inner side of the connecting pipe (2) is provided with a positioning step (20). The end of the mounting plate (14) cooperates with the positioning step (20), and the mounting plate (14) and the connecting pipe (2) are fixedly connected by bolts.

4. The engineering plastics processing material feeding device with filtering function according to claim 1, characterized in that, A flexible connecting component (3) is provided between the rotary tube (40) and the connecting tube (2). The flexible connecting component (3) includes a connecting ring (32) disposed inside the connecting tube (2) and the rotary tube (40). Multiple elastic rods (33) are evenly inserted between the connecting ring (32) inside the connecting tube (2) and the connecting ring (32) inside the rotary tube (40). Both ends of the elastic rod (33) are respectively fitted with a cooperating spring (34) between the connecting ring (32). A threaded sleeve one (30) and a threaded sleeve two (31) are respectively provided between the connecting tube (2) and the rotary tube (40). The connecting ring (32) and the elastic rod (33) are disposed between the threaded sleeve one (30) and the threaded sleeve two (31).

5. The engineering plastics processing material feeding device with filtering function according to claim 1, characterized in that, The rotary drive assembly (4) includes an external gear ring (41) disposed on the outside of the rotary tube (40), a closed sleeve (45) is fixedly connected to the end of the mounting tube (5), a drive motor (46) is fixedly installed inside the closed sleeve (45), the drive motor (46) is connected to a drive gear (47), and the drive gear (47) meshes with the external gear ring (41).

6. The engineering plastics processing material feeding device with filtering function according to claim 5, characterized in that, The end of the rotary tube (40) is provided with a connecting flange (42). The rotary tube (40) is rotatably installed between the connecting flange (42) and the mounting tube (5). The connecting flange (42) is provided with fitting rings (43) on both sides. Multiple contact balls (44) are rolled between the connecting flange (42) and the fitting rings (43). A limit ring (50) is fixedly provided on the inner side of the mounting tube (5). The rotary tube (40) is movably installed between the end of the mounting tube (5) and the limit ring (50) in conjunction with the connecting flange (42).

7. The engineering plastics processing material feeding device with filtering function according to claim 1, characterized in that, The end of the suction cylinder (1) located inside the spacer groove (10) is provided with a gap between it and the bottom plate (12). The bottom plate (12) and the end of the suction cylinder (1) are fixedly connected by bolts.

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