A plastic pellet conveying device

Abstract

This application discloses a plastic granule conveying device, including a conveying pipe. The conveying pipe includes a first channel, a second channel, and a third channel that are interconnected. A flow divider is rotatably disposed between the second channel and the third channel. Rotation of the flow divider controls communication between the first channel and the second channel and / or the third channel. A positioning component is disposed on the wall of the conveying pipe. The positioning component is adapted to restrict the rotation of the flow divider when it reaches an adjustment position. The positioning component is provided to increase the stability of the fixed position and to distribute the external force during oscillation, thereby reducing wear at the shaft mounting point. When the positioning component stably fixes the flow divider in the middle adjustment position, it can ensure that the flow divider works stably during the conveying process and will not cause uneven feeding due to shaking.

Description

Technical Field

[0001] This application relates to the field of conveying equipment technology, and in particular to a plastic pellet conveying device. Background Technology

[0002] The plastic granules commonly used in automotive parts manufacturing mainly include polypropylene (PP), polyamide (PA), polyester (PET, PBT, etc.) and polycarbonate (PC). Different parts generally use different plastic granules depending on their strength, color and other requirements.

[0003] Such plastic granules are often conveyed during production using screw conveyors or pneumatic conveyors. To increase discharge efficiency, a diversion pipe can be used to split the material into multiple streams for simultaneous discharge. Currently, the most common diversion pipe is a three-way pipe, with one passage for feeding and the other two for discharging. A rotatable diversion plate is placed in the middle. When the diversion plate rotates to block one of the discharge passages, unidirectional discharge is achieved. When the diversion plate is vertically positioned towards the center, two streams can discharge simultaneously. However, the diversion plate is usually mounted on a rotating shaft. When fixing it, a damping structure is typically added at the shaft where the diversion plate is installed. But in common pneumatic conveying systems, the diversion plate frequently shakes on both sides due to material conveying or uneven air pressure, easily leading to wear and tear. Summary of the Invention

[0004] The purpose of this application is to provide a plastic pellet conveying device.

[0005] To achieve the above objectives, the technical solution adopted in this application is as follows: a plastic granule conveying device, comprising a conveying pipe, the conveying pipe including a first channel, a second channel and a third channel that are interconnected, a flow divider plate rotatably disposed between the second channel and the third channel, the flow divider plate rotating to control the first channel to communicate with the second channel and / or the third channel, and a positioning component disposed on the pipe wall of the conveying pipe, the positioning component being adapted to restrict the rotation of the flow divider plate when the flow divider plate reaches the adjustment point.

[0006] As a preferred embodiment, the positioning component includes telescopic positioning elements, which are telescopically mounted on the wall of the conveying pipe. There are three telescopic positioning elements at the ends of the second channel, the third channel, and the first channel. The telescopic positioning elements are locked when extended and unlocked when retracted. There are two rows of telescopic positioning elements at the end of the first channel, and one row of telescopic positioning elements at the other two locations.

[0007] As a preferred embodiment, the telescopic positioning component includes a threaded sleeve fixedly installed on the outer wall of the conveying pipe and a screw threadedly connected to the threaded sleeve. The screw is initially in a retracted state and the inner side of the screw does not exceed the inner wall of the conveying pipe.

[0008] As a preferred embodiment, the telescopic positioning part includes a telescopic sleeve fixedly installed on the outer wall of the conveying pipe and a telescopic rod inserted into the inner cavity of the telescopic sleeve. The telescopic rod has a non-circular cross-section, and positioning holes are provided through the upper and lower surfaces of the telescopic rod. A movable pin is provided on the telescopic sleeve. When the telescopic rod is inserted into the inside of the conveying pipe, the movable pin is inserted into the positioning hole to fix the telescopic rod.

[0009] As a preferred embodiment, the positioning component includes an elastic limiting member. Before the diverter plate reaches the adjustment point, it acts on the elastic limiting member and deforms it. Subsequently, the diverter plate reaches the adjustment point through the elastic limiting member, while the elastic limiting member resets and limits the diverter plate.

[0010] As a preferred embodiment, the conveying pipe protrudes outward to form an installation area for mounting the elastic limiting member. The elastic limiting member includes a fixed part fixedly installed within the installation area and an elastic part extending beyond the installation area. The elastic part is conical or arc-shaped, and guide surfaces are formed on both sides of the elastic part. When the diverter plate passes through the elastic part, it interferes with the elastic part and causes the elastic part to deform. As the diverter plate completely passes through, the elastic part resets to form a restriction.

[0011] As a preferred embodiment, the bottom of the diverter plate is provided with a rotating shaft, the two sides of the rotating shaft pass through the conveying pipe, and a shaft connection is provided on the outer wall of the conveying pipe. The shaft connection is provided with an adjustment part for limiting the rotation of the diverter plate.

[0012] As a preferred embodiment, the first channel, the second channel, and the third channel are all equipped with a spiral feeding structure, and the conveying pipes are placed vertically.

[0013] As a preferred embodiment, the first channel, the second channel, and the third channel of the conveying pipeline are all provided with external extension pipes, and the conveying device includes a blower.

[0014] As a preferred embodiment, the pipe walls at the inlets of the second channel and the third channel are provided with sealing ribs, and when the diverter plate rotates to the corresponding second channel or the third channel, it abuts against the sealing ribs to form a seal.

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

[0016] A positioning component is incorporated to enhance stability and distribute external forces during oscillation, thereby reducing wear at the shaft mounting point. When the positioning component securely fixes the distributor plate in the central adjustment position, it ensures stable operation during conveying, preventing uneven feeding due to wobbling. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of one embodiment of this application.

[0018] Figure 2 yes Figure 1 A schematic diagram of the pipeline used for transporting goods.

[0019] Figure 3 This is a schematic diagram of a positioning component.

[0020] Figure 4 This is a schematic diagram of another positioning component.

[0021] Figure 5 yes Figure 3 A schematic diagram of the positioning component.

[0022] Figure 6 This is a schematic diagram of another positioning component.

[0023] Figure 7 yes Figure 4 A schematic diagram of the positioning component on the back of the delivery pipe.

[0024] Figure 8 yes Figure 6 A schematic diagram of the positioning component on the back of the delivery pipe.

[0025] In the diagram: 1. First channel; 2. Second channel; 3. Third channel; 4. Diverter plate; 5. Conveying pipe; 6. Telescopic rod; 7. Rotating shaft; 8. Sealing rib; 10. Telescopic sleeve; 11. Movable pin; 12. Installation area; 13. Fixing part; 14. Elastic part; 15. Screw sleeve; 16. Screw; 17. Blower. Detailed Implementation

[0026] The present application will be further described below with reference to specific embodiments. It should be noted that, without conflict, the various embodiments or technical features described below can be arbitrarily combined to form new embodiments.

[0027] In the description of this application, it should be noted that the terms "center", "lateral", "longitudinal", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., which indicate the orientation and positional relationship based on the orientation or positional relationship shown in the accompanying drawings, are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and should not be construed as limiting the specific protection scope of this application.

[0028] It should be noted that the terms "first," "second," etc., in the specification and claims of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence.

[0029] The terms “comprising” and “having”, and any variations thereof, in the specification and claims of this application are intended to cover non-exclusive inclusion, for example, a process, method, system, product, or device that includes a series of steps or units is not necessarily limited to those steps or units that are explicitly listed, but may include other steps or units that are not explicitly listed or that are inherent to such process, method, product, or device.

[0030] Example:

[0031] like Figures 1 to 8 As shown, this embodiment proposes a plastic pellet conveying device, including a conveying pipe 5. The conveying pipe 5 includes a first channel 1, a second channel 2, and a third channel 3 that are interconnected. A diverter plate 4 is rotatably disposed between the second channel 2 and the third channel 3. The rotation of the diverter plate 4 controls the communication between the first channel 1 and the second channel 2 and / or the third channel 3. The pipe wall of the conveying pipe 5 is provided with a positioning component, which is adapted to restrict the rotation of the diverter plate 4 when the diverter plate 4 reaches the adjustment point. The three-way pipe mentioned in this application is a conveying pipe 5 commonly used for granule conveying. Plastic granule conveying devices usually adopt pneumatic conveying or screw feeding. Taking pneumatic conveying as an example, during conveying, plastic granules enter the second channel 2 and / or the third channel 3 from the first channel 1 at a relatively fast speed. At this time, the granules collide with the second channel 2 and / or the third channel 3. When one of the channels is blocked, for example, the third channel 3 is blocked, the first channel 1 and the second channel 2 are connected. At this time, the granules will continue to act during the frequent and rapid conveying process. Due to the rotation setting, the installed rotating shaft 7 is continuously subjected to force under the continuous action of the plastic granules. If it is only fixed by self-locking at the rotating shaft 7, the frequent impacts will accelerate the wear of the rotating shaft 7, thereby affecting the fixing effect. When in such a situation... Figure 3When the middle section is shown, the plastic granules are also transported, and the airflow on both sides during pneumatic conveying also causes swaying, resulting in wear. Therefore, this embodiment additionally provides a positioning component to increase the stability of the fixation, thereby dispersing the external force during swaying and reducing wear at the mounting point of the rotating shaft 7.

[0032] The positioning components ensure that the splitter plate 4 is stably fixed in place, such as Figure 3 When the diverter plate 4 is in the middle adjustment position, it can ensure that the diverter plate 4 works stably during the conveying process and will not cause uneven feeding due to shaking.

[0033] On the other hand, if pneumatic conveying is used, if the third channel 3 is closed and the second channel 2 is open, and if the third channel 3 is connected to the atmosphere or the other end is open, a pressure difference will be generated on both sides of the first channel 1 and the second channel 2 during the transportation process. When the second channel 2 is open, the flow rate is fast and the pressure is low, while one side of the third channel 3 can be approximated as atmospheric pressure. Therefore, there is a tendency to rotate towards the second channel 2 side, which will increase the force on the rotating shaft 7. At this time, a positioning component is set in the third channel 3. When the top of the rotating shaft 7 (which is obviously located at the bottom for rotation and sealing) moves outward, it will act on the positioning component. Therefore, the positioning component can share part of the external force on the rotating shaft 7, thereby reducing the wear at the bottom of the rotating shaft 7.

[0034] The following are several preferred implementation schemes for the positioning component.

[0035] (1) The positioning component includes telescopic positioning elements, which are telescopically mounted on the wall of the conveying pipe 5. There are three telescopic positioning elements at the ends of the second channel 2, the third channel 3, and the first channel 1. The telescopic positioning elements are locked when extended and unlocked when retracted. There are two rows of telescopic positioning elements at the end of the first channel 1, and one row of telescopic positioning elements at the other two locations. The telescopic positioning part can adopt the following two preferred schemes.

[0036] See Figure 4 and Figure 7 The first type of telescopic positioning component includes a threaded sleeve 15 fixedly installed on the outer wall of the conveying pipe 5 and a screw 16 threadedly connected to the threaded sleeve 15. The screw 16 is initially in a retracted state, and its inner side does not extend beyond the inner wall of the conveying pipe 5. Clearly, the two telescopic positioning components located on either side only need to restrict one side of the diverter plate 4, while the one located in the middle needs to restrict both sides of the diverter plate 4. Rotating the screw 16 adjusts the position of its inner side within the conveying pipe 5; when the screw 16 protrudes, it can limit the movement of the diverter plate 4. Figure 4As shown, two screw sleeves 15 and two screw rods 16 are required in the middle, while only one is required on each side. The screw rod 16 should be rotated out of the conveying pipe 5 in the initial state. When the diverter plate 4 is rotated to the set adjustment position, the corresponding screw rod 16 is screwed in to restrict the diverter plate 4.

[0037] See Figure 3 and Figure 5 The second type of telescopic positioning part includes a telescopic sleeve 10 fixedly installed on the outer wall of the conveying pipe 5 and a telescopic rod 6 inserted into the inner cavity of the telescopic sleeve 10. The telescopic rod 6 has a non-circular cross-section, and positioning holes are provided through its upper and lower surfaces. A movable pin 11 is provided on the telescopic sleeve 10. When the telescopic rod 6 is inserted into the conveying pipe 5, the movable pin 11 is inserted into the positioning hole to fix the telescopic rod 6. The non-circular cross-section of the telescopic rod 6 can prevent it from rotating on its own, thus preventing the positioning hole from deviating. After the movable pin 11 is inserted, the telescopic rod 6 is fixed. At this time, the inner side of the telescopic rod 6 enters the inner cavity of the conveying pipe 5 and restricts the flow divider 4. Figure 3 As shown, only one telescopic rod 6 is installed on each side, while two telescopic rods 6 are required in the middle.

[0038] (2) The positioning component includes an elastic limiting member. Before the diverter plate 4 reaches the adjustment point, it acts on the elastic limiting member and deforms it. Then the diverter plate 4 reaches the adjustment point through the elastic limiting member. At the same time, the elastic limiting member resets and limits the diverter plate 4.

[0039] like Figure 6 As shown, the conveying pipe 5 protrudes outward to form an installation area 12 for installing the elastic limiting member. The elastic limiting member includes a fixed part 13 fixedly installed within the installation area 12 and an elastic part 14 extending out of the installation area 12. The elastic part 14 is conical or arc-shaped, and guide surfaces are formed on both sides of the elastic part 14. When the diverter plate 4 passes through the elastic part 14, it interferes with the elastic part 14 and causes the elastic part 14 to deform. As the diverter plate 4 completely passes through, the elastic part 14 resets and forms a limit. Figure 6 The elastic part 14 shown is achieved through an arched structure. The material itself can be a metal or plastic with tough deformation capability. When arched, it has the characteristics of deformation and automatic recovery. Of course, in some embodiments, a spring can also be added to increase the rebound.

[0040] like Figure 3 As shown, a rotating shaft 7 is provided at the bottom of the diverter plate 4. The rotating shaft 7 passes through the conveying pipe 5 on both sides, and a shaft connection is provided on the outer wall of the conveying pipe 5. The shaft connection is provided with an adjustment part for limiting the rotation of the diverter plate 4.

[0041] The conveying pipe 5 of this application can also be provided with a spiral feeding structure in the first channel 1, the second channel 2 and the third channel 3. In this case, the corresponding conveying pipe 5 needs to be placed vertically. Otherwise, when the flow is diverted at the conveying pipe 5, the plastic particles cannot flow backward or horizontally to be diverted. They need to fall by their own weight and be diverted by the diversion plate 4.

[0042] like Figure 1 As shown, the first channel 1, second channel 2, and third channel 3 of the conveying pipeline 5 are all equipped with external extension pipes. The conveying device includes a blower 17. The blower can be an air pump or other equipment. When performing pneumatic conveying, the conveying pipeline 5 can be placed horizontally, vertically, or inclined, preferably vertically or inclined, which helps to reduce the conveying pressure. When using pneumatic conveying, the conveying environment should ideally have relatively good sealing performance. Therefore, sealing ribs 8 are extended from the pipe walls at the inlet of the second channel 2 and the third channel 3. When the diverter plate 4 rotates to the corresponding second channel 2 or third channel 3, it abuts against the sealing ribs 8 to form a seal. The sealing ribs 8 can be made of rubber to increase the sealing performance after contact with the diverter plate 4.

[0043] The basic principles, main features, and advantages of this application have been described above. Those skilled in the art should understand that this application is not limited to the above embodiments. The embodiments and descriptions in the specification are merely the principles of this application. Various changes and modifications can be made to this application without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection claimed by this application is defined by the appended claims and their equivalents.

Claims

1. A plastic granule conveying device, characterized in that, The system includes a conveying pipeline, which includes a first channel, a second channel, and a third channel that are interconnected. A flow divider is rotatably disposed between the second channel and the third channel. The rotation of the flow divider controls the connection between the first channel and the second channel and / or the third channel. The pipe wall of the conveying pipeline is provided with a positioning component, which is adapted to restrict the rotation of the flow divider when the flow divider reaches the adjustment point. The positioning component includes telescopic positioning elements, which are telescopically mounted on the wall of the conveying pipe. There are three telescopic positioning elements at the ends of the second channel, the third channel, and the first channel. The telescopic positioning elements are locked when extended and unlocked when retracted. There are two rows of telescopic positioning elements at the end of the first channel, and one row of telescopic positioning elements at the other two locations. The telescopic positioning component includes a threaded sleeve fixedly installed on the outer wall of the conveying pipe and a threaded rod threadedly connected to the threaded sleeve. The initial state of the threaded rod is a retracted state and the inner side of the threaded rod does not exceed the inner wall of the conveying pipe. Alternatively, the telescopic positioning component may include a telescopic sleeve fixedly installed on the outer wall of the conveying pipe and a telescopic rod inserted into the inner cavity of the telescopic sleeve. The telescopic rod has a non-circular cross-section and positioning holes are provided through its upper and lower surfaces. The telescopic sleeve is provided with a movable pin. When the telescopic rod is inserted into the conveying pipe, the movable pin is inserted into the positioning hole to fix the telescopic rod.

2. The plastic pellet conveying device as described in claim 1, characterized in that, The positioning component includes an elastic limiting member. Before the diverter plate reaches the adjustment point, it acts on the elastic limiting member and deforms it. Then, the diverter plate reaches the adjustment point through the elastic limiting member, and at the same time, the elastic limiting member resets and limits the diverter plate.

3. The plastic pellet conveying device as described in claim 2, characterized in that, The conveying pipe protrudes outward to form an installation area for installing the elastic limiting member. The elastic limiting member includes a fixed part that is fixedly installed in the installation area and an elastic part that extends out of the installation area. The elastic part is conical or arc-shaped, and guide surfaces are formed on both sides of the elastic part. When the diverter plate passes through the elastic part, it interferes with the elastic part and causes the elastic part to deform. As the diverter plate completely passes through, the elastic part resets to form a restriction.

4. The plastic pellet conveying device as described in claim 1 or 2, characterized in that, The bottom of the diverter plate is provided with a rotating shaft, which passes through the conveying pipe on both sides. A shaft connection is provided on the outer wall of the conveying pipe, and the shaft connection is provided with an adjustment part for limiting the rotation of the diverter plate.

5. The plastic pellet conveying device as described in claim 1, characterized in that, The first channel, the second channel, and the third channel are all equipped with a spiral feeding structure, and the conveying pipe is placed vertically.

6. The plastic pellet conveying device as described in claim 1, characterized in that, The first, second, and third channels of the conveying pipeline are all provided with external extension pipes, and the conveying device includes a blower.

7. The plastic pellet conveying device as described in claim 6, characterized in that, The pipe walls at the entrances of the second channel and the third channel are provided with sealing ribs. When the diverter plate rotates to the corresponding second channel or the third channel, it abuts against the sealing ribs to form a seal.

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