A material adding device for MPP pipe production

Abstract

The utility model provides a kind of material adding device for MPP pipe production, it is related to MPP pipe production technical field, including shell, it is by upper and lower respectively in shell and is provided with pulverization bucket, grinding barrel and mixing barrel, the barrel wall of grinding barrel is fixedly installed with coaxially distributed lower mill ring, the upper surface of lower mill ring is provided with coaxially distributed upper mill ring, the outer edge of upper mill ring and the inner barrel wall of grinding barrel gap fit and the upper surface of upper mill ring is rotatably connected with conical cover, the telescopic electric push rod is used to realize that conical cover drives upper mill ring to descend or ascend, adjust the gap between lower mill ring, then drive straight gear rotation by the way of installing stepper motor in conical cover, it can be achieved that the straight tooth ring of meshing connection drives upper mill ring relative to conical cover rotation, it can be achieved that raw material in grinding barrel is ground into the particle of corresponding size.

Description

Technical Field

[0001] This utility model relates to the field of MPP pipe production technology, and in particular to a feeding device for MPP pipe production. Background Technology

[0002] MPP pipe production involves the reaction of modified polypropylene granules as the main material with two or more other raw material granules. During the reaction, the granules must be added in a specific order and proportion to the chemical tank. Therefore, a prior art feeding device for MPP pipe production, published under CN215750199U, involves feeding material through the inlet. A first motor drives a first transmission shaft via gear meshing to rotate the crushing blades and crush the raw material granules. A second motor drives a second transmission shaft to rotate the grinding block, further crushing the granules. A third motor drives a third transmission shaft to rotate the stirring rod and brush rod. After thorough mixing, the discharge valve opens, and the mixed material falls from the discharge port into the collection box.

[0003] However, in MPP pipe production, the size of the raw material particles has a significant impact on product quality and production efficiency. In existing technologies, the particle size of the finished product is fixed during the grinding process, which means that the raw material may be ground too finely. If the particles are too fine, the flowability of the raw material may be reduced during subsequent mixing and molding processes, affecting the uniform distribution of the raw material and thus affecting the mechanical properties and appearance quality of the MPP pipe. Utility Model Content

[0004] The purpose of this utility model is to solve the problems existing in the prior art by proposing a feeding device for MPP pipe production.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: a feeding device for MPP pipe production, comprising a shell, wherein a crushing barrel, a grinding barrel, and a mixing barrel are respectively arranged from top to bottom inside the shell; a lower grinding ring is fixedly installed on the wall of the grinding barrel; an upper grinding ring is arranged on the upper surface of the lower grinding ring; the outer edge of the upper grinding ring is clearance-fitted with the inner wall of the grinding barrel, and a conical cover is rotatably connected to the upper surface of the upper grinding ring; an electric push rod is fixedly installed with the tip of the conical cover facing upward; the electric push rod is coaxially arranged with the grinding barrel, and the cylinder body and telescopic end of the electric push rod are respectively fixedly connected to the grinding barrel and the tip of the conical cover; a spur gear ring is fixedly installed on the inner edge of the upper surface of the upper grinding ring; and a spur gear is arranged inside the conical cover and is driven by a stepper motor and meshes with the spur gear ring.

[0006] Preferably, the outer shell has several layers of connectors arranged from top to bottom, the bottom ends of the connectors respectively connecting to the openings of the crushing barrel, grinding barrel, and mixing barrel, and the top ends of the connectors respectively penetrating the top surface of the outer shell, the bottom of the crushing barrel, and the bottom of the grinding barrel.

[0007] Preferably, a square tube is fixedly installed at an inclined position on one side of the connector surface, and the two square tubes on the same connector are respectively inclined upward and inclined downward.

[0008] Preferably, a feeding pipe is provided between two adjacent connectors, one end of which is inserted into a square tube on the lower surface of the upper connector and the other end of which is inserted into the opening of a square tube on the upper surface of the lower connector.

[0009] Preferably, a connecting pipe is inserted into the square tube opening on the upper surface of the upper connector. One end of the connecting pipe penetrates the top surface of the outer shell, and feeding ports are provided on both the top of the upper connector and the other end of the connecting pipe on the top surface of the outer shell.

[0010] Preferably, the inner wall of the connector near the square tube is hinged with a lever that swings up and down, and the hinged end of the lever is flush with the bottom edge of the square tube opening at the position above and below the same connector.

[0011] Preferably, a connecting gear is fixedly installed at one of the rotatable connections between the paddle and the connector, extending outward through the connector. A rack that meshes with the connecting gear is inserted into the outer side of the connector, and an electric telescopic rod is provided between one end of the rack and the outer wall of the connector.

[0012] Compared with the prior art, the advantages and positive effects of this utility model are as follows:

[0013] 1. In this utility model, the electric push rod is used to extend and retract to drive the upper grinding ring to descend or rise, adjust the gap between the upper and lower grinding rings, and then drive the spur gear to rotate by installing a stepper motor inside the conical cover. This enables the meshing spur gear ring to drive the upper grinding ring to rotate relative to the conical cover, thereby grinding the raw materials entering the grinding barrel into particles of the corresponding size.

[0014] 2. In this utility model, by setting the swing point of the paddle to fit against the inner wall of the connector head away from the square tube, when the raw material passes through the upper connector head, under the blocking action of the paddle, the raw material can directly enter the square tube below the surface of the connector head through the connector head, and then enter the middle connector head along the corresponding connected conveying pipe. When the raw material in the upper conveying pipe enters the middle connector head along the square tube above the surface of the middle connector head, under the blocking action of the paddle, the raw material in the middle connector head directly enters the lower connector head through the square tube below its surface and the conveying pipe, and then enters the mixing tank through the lower connector head. This method can be applied to some raw materials that do not need to be crushed or ground. Attached Figure Description

[0015] Figure 1 This utility model provides a three-dimensional structural diagram of a feeding device for MPP pipe production;

[0016] Figure 2 This utility model proposes a feeding device for MPP pipe production. Figure 1 A schematic diagram of the cross-sectional structure;

[0017] Figure 3 This utility model proposes a feeding device for MPP pipe production. Figure 2 A schematic diagram of the cross-sectional structure;

[0018] Figure 4 This is a schematic diagram of the top part of the crushing barrel structure;

[0019] Figure 5 for Figure 3 Enlarged view of point A in the middle.

[0020] Legend: 1. Outer shell; 2. Crushing barrel; 3. Grinding barrel; 4. Mixing barrel; 5. Feeding pipe; 6. Electric push rod; 7. Conical cover; 8. Lower grinding ring; 9. Upper grinding ring; 10. Spur gear ring; 11. Spur gear; 12. Feeding port; 13. Connector; 14. Connecting pipe; 15. Rack; 16. Connecting gear; 17. Electric telescopic rod; 18. Paddle; 19. Square tube. Detailed Implementation

[0021] To better understand the above-mentioned objectives, features, and advantages of this utility model, the present utility model will be further described below with reference to the accompanying drawings and embodiments. It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.

[0022] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the present invention is not limited to the specific embodiments disclosed in the following specification.

[0023] like Figures 1-5 As shown, a feeding device for MPP pipe production includes a housing 1. Inside the housing 1, from top to bottom, are a crushing tank 2, a grinding tank 3, and a mixing tank 4. The internal structures of the crushing tank 2 and the mixing tank 4 are based on the crushing cylinder and stirring cylinder in a feeding device for MPP pipe production published in CN215750199U. Figure 3 The grinding drum 3 achieves uniform crushing and mixing of raw materials through built-in crushing blades and stirring rods. A lower grinding ring 8 is coaxially distributed and fixedly installed on the wall of the grinding drum 3. An upper grinding ring 9 is coaxially distributed on the upper surface of the lower grinding ring 8. The outer edge of the upper grinding ring 9 is clearance-fitted with the inner wall of the grinding drum 3, and a conical cover 7 is rotatably connected to the upper surface of the upper grinding ring 9. The tip of the conical cover 7 faces upward and is fixedly installed with an electric push rod 6. The electric push rod 6 is coaxially arranged with the grinding drum 3, and its cylinder and telescopic end are fixedly connected to the grinding drum 3 and the tip of the conical cover 7, respectively. A straight toothed ring 1 is coaxially distributed and fixedly installed on the inner edge of the upper surface of the upper grinding ring 9. 0. The conical cover 7 is equipped with a spur gear 11 driven by a stepper motor and meshing with the spur gear ring 10. The raw material crushed by the crushing barrel 2 falls into the grinding barrel 3. According to the grinding size requirements of different raw materials, the electric push rod 6 is used to extend and retract to make the conical cover 7 drive the upper grinding ring 9 to descend or rise, and adjust the gap between it and the lower grinding ring 8. Then, by installing a stepper motor in the conical cover 7 to drive the spur gear 11 to rotate, the meshing spur gear ring 10 can drive the upper grinding ring 9 to rotate relative to the conical cover 7, so that the raw material entering the grinding barrel 3 can be ground into particles of the corresponding size.

[0024] Inside the outer shell 1, there are several layers of connectors 13 arranged from top to bottom. The bottom ends of the connectors 13 are respectively connected to the openings of the crushing barrel 2, the grinding barrel 3 and the mixing barrel 4, and the top ends of the connectors 13 are respectively connected to the inner top surface of the outer shell 1, the bottom of the crushing barrel 2 and the bottom of the grinding barrel 3. In use, the connectors 13 are used to allow the raw materials to pass through the crushing barrel 2, the grinding barrel 3 and the mixing barrel 4 from top to bottom.

[0025] Some raw materials do not require crushing or grinding. Therefore: An inclined square tube 19 is fixedly installed through one side of the connector 13 at the top and bottom positions respectively. The two square tubes 19 on the same connector 13 are inclined upwards and downwards respectively. A lever 18 that swings up and down is hinged to the inner wall of the connector 13 near the square tube 19. Lever 18 is installed in the upper and middle layers of the connector 13, but not in the lower layer. The hinged end of the lever 18 is flush with the bottom edge of the square tube 19 at the top and bottom positions of the same connector 13. A connecting gear 16 is fixedly installed through one of the rotating connection points of the lever 18 and the connector 13, extending outwards from the connector 13. A rack 15 that meshes with the connecting gear 16 is inserted into the outside of the connector 13. An electric telescopic rod 17 is installed between one end of the rack 15 and the outer wall of the connector 13. Figure 5 As shown, and in combination Figure 4 By retracting the electric telescopic rod 17, the rack 15 rises, enabling the connecting gear 16 to rotate clockwise, which in turn drives the paddle 18 to swing to a vertical position. The vertically positioned paddle 18 seals the openings of the two square tubes 19 inside the connector 13, allowing the raw material to fall directly through the connector 13 into the lower part. This allows the raw material to directly enter the crushing tank 2, or the raw material in the crushing tank 2 to directly enter the grinding tank 3, or the raw material in the grinding tank 3 to directly enter the mixing tank 4, and vice versa. Figure 5 As shown, when the raw material passes through the upper connector 13, it can directly enter the square tube 19 below the surface of the connector 13 under the blocking action of the paddle 18, and then enter the middle connector 13 along the corresponding connected conveying pipe 5. When the paddle 18 in the middle connector 13 is tilted as shown... Figure 5 In the state shown, the raw material in the upper conveying pipe 5 enters the middle connecting head 13 along the square tube 19 above the surface of the middle connecting head 13. Then, under the blocking action of the paddle 18, the raw material in the middle connecting head 13 directly enters the lower connecting head 13 through the square tube 19 below its surface and the conveying pipe 5, and then enters the mixing tank 4 through the lower connecting head 13.

[0026] A conveying pipe 5 is provided between two adjacent connectors 13. One end of the conveying pipe 5 is inserted into the square tube 19 located below the surface of the upper connector 13, and the other end of the conveying pipe 5 is inserted into the opening of the square tube 19 located above the surface of the lower connector 13. A connecting pipe 14 is inserted into the opening of the square tube 19 located above the surface of the upper connector 13. One end of the connecting pipe 14 penetrates the top surface of the outer shell 1, and feeding ports 12 are provided at the top of the upper connector 13 and the other end of the connecting pipe 14 on the top surface of the outer shell 1. The conveying pipe 5 allows the raw materials to skip the crushing barrel 2 or the grinding barrel 3.

[0027] The method of using this utility model is as follows: Raw materials are poured into the upper connector 13 from the top of the upper connector 13 or the opening of the upper conveying pipe 5. When crushing or grinding is required according to the processing requirements of the raw materials, the electric telescopic rod 17 is retracted to raise the rack 15, thereby enabling the meshing connection gear 16 to rotate clockwise and drive the paddle 18 to swing to a vertical position. The vertical paddle 18 can seal the openings of the two square tubes 19 inside the connector 13, so that the raw materials can pass through the crushing barrel 2, grinding barrel 3 and mixing barrel 4 from top to bottom. When passing through the grinding barrel 3, the electric push rod 6 is extended and retracted to drive the conical cover 7 to lower or raise the upper grinding ring 9, adjusting the gap between it and the lower grinding ring 8. Then, by installing a stepper motor in the conical cover 7 to drive the spur gear 11 to rotate, the meshing connection spur gear ring 10 can drive the upper grinding ring 9 to rotate relative to the conical cover 7, thereby grinding the raw materials entering the grinding barrel 3 into particles of the corresponding size.

[0028] The wiring diagrams for the electric push rod 6, stepper motor, and electric telescopic rod 17 in this utility model are common knowledge in the field. Their working principles are known technologies. The appropriate model is selected according to actual use. Therefore, the control methods and wiring layouts of the electric push rod 6, stepper motor, and electric telescopic rod 17 will not be explained in detail.

[0029] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any other way. Any person skilled in the art may make changes or modifications to the above-disclosed technical content to create equivalent embodiments for application in other fields. However, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of the present utility model without departing from the technical solution of the present utility model shall still fall within the protection scope of the technical solution of the present utility model.

Claims

1. A feeding device for MPP pipe production, comprising a housing (1), wherein a crushing tank (2), a grinding tank (3), and a mixing tank (4) are respectively arranged from top to bottom inside the housing (1), characterized in that: The grinding barrel (3) has a lower grinding ring (8) fixedly installed on its wall, and an upper grinding ring (9) is provided on its upper surface. The outer edge of the upper grinding ring (9) is fitted with the inner wall of the grinding barrel (3) with a clearance, and a conical cover (7) is rotatably connected to the upper surface of the upper grinding ring (9). The tip of the conical cover (7) faces upward and is fixedly installed with an electric push rod (6). The electric push rod (6) is coaxially arranged with the grinding barrel (3), and the cylinder body and telescopic end of the electric push rod (6) are fixedly connected to the grinding barrel (3) and the tip of the conical cover (7) respectively. A spur gear (10) is fixedly installed on the inner edge of the upper surface of the upper grinding ring (9), and a spur gear (11) is provided inside the conical cover (7) and is driven by a stepper motor and meshed with the spur gear (10).

2. The feeding device for MPP pipe production according to claim 1, characterized in that: The outer shell (1) has several layers of connectors (13) arranged from top to bottom. The bottom ends of the connectors (13) are respectively connected to the openings of the crushing barrel (2), the grinding barrel (3) and the mixing barrel (4), and the top ends of the connectors (13) are respectively connected to the top surface of the outer shell (1), the bottom of the crushing barrel (2) and the bottom of the grinding barrel (3).

3. The feeding device for MPP pipe production according to claim 2, characterized in that: The connector (13) has two square tubes (19) fixedly installed at the top and bottom positions on one side of its surface, with the two square tubes (19) on the same connector (13) being set at an angle upward and downward respectively.

4. The feeding device for MPP pipe production according to claim 3, characterized in that: A material conveying pipe (5) is provided between two adjacent connectors (13). One end of the material conveying pipe (5) is inserted into the square tube (19) on the lower surface of the upper connector (13), and the other end of the material conveying pipe (5) is inserted into the opening of the square tube (19) on the upper surface of the lower connector (13).

5. The feeding device for MPP pipe production according to claim 3, characterized in that: The upper connector (13) has a square tube (19) on the upper surface with a connecting tube (14) inserted into it. One end of the connecting tube (14) penetrates the top surface of the outer shell (1), and the top surface of the outer shell (1) is provided with a feeding port (12) at the top of the upper connector (13) and the other end of the connecting tube (14).

6. The feeding device for MPP pipe production according to claim 3, characterized in that: The connector (13) has a hinged lever (18) that swings up and down on the inner wall of the side near the square tube (19). The hinged end of the lever (18) is flush with the bottom edge of the opening of the square tube (19) at the same position above and below the connector (13).

7. The feeding device for MPP pipe production according to claim 6, characterized in that: One of the rotating connections between the paddle (18) and the connector (13) extends outward through the connector (13) and is fixedly installed with a connecting gear (16). A rack (15) that meshes with the connecting gear (16) is inserted into the outside of the connector (13). An electric telescopic rod (17) is provided between one end of the rack (15) and the outer wall of the connector (13).

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