Viscous plastic particle conveying and feeding device
By incorporating a separation screen and a pusher screw within the separation hopper, the problem of clogging during the conveying of viscous plastic particles is solved, achieving stable and efficient material conveying.
Patent Information
- Application Number
- CN202423185737.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-23
- Publication Date
- 2025-12-02
- Estimated Expiration
- 2034-12-23
AI Technical Summary
Sticky plastic particles can easily clog the conveying pipes during transport, and frequent starting and stopping of the suction fan affects efficiency.
A feeding device for conveying viscous plastic particles was designed, including a separating hopper and a discharging cylinder. The separating hopper is equipped with a separating net and a pushing screw, which is connected to a suction fan through an air extraction pipe. The pushing screw rotates in the discharging cylinder to avoid blockage and continuously convey the material.
It enables stable transport of viscous plastic particles, avoids pipeline blockage, and improves transport efficiency and continuity.
Smart Images
Figure CN223618044U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of viscous plastic particle production technology, and in particular to a viscous plastic particle conveying and feeding device. Background Technology
[0002] Currently, plastic pellet production utilizes negative pressure for conveying. This negative pressure creates an airflow within the pipe, drawing in pellets from the hopper and conveying them through a separation hopper. Separation requires the suction fan to be stopped. The discharge port at the bottom of the separation hopper is equipped with a swing-out valve. When suction stops, the valve opens due to its own weight, allowing the material to be discharged. However, viscous plastic pellets are relatively soft and have a certain degree of stickiness. Therefore, when the separation hopper is full and material is discharged, the relatively small cross-section of the conveying pipe remains filled with accumulated material. This accumulated material, due to its stickiness, may clump together within the conveying pipe, preventing the smooth intake of plastic pellets into the separation hopper upon restarting, potentially causing blockages. Furthermore, the frequent starting and stopping of the suction fan during material conveying reduces efficiency. Utility Model Content
[0003] The technical problem to be solved by this utility model is to provide a conveying and feeding device for viscous plastic particles, which can continuously convey materials and avoid blockage of the feed pipe caused by the shutdown of the suction fan.
[0004] To solve the above-mentioned technical problems, the technical solution of this utility model is: a conveying and feeding device for viscous plastic particles, including a separating hopper, a separating net is provided inside the separating hopper, the separating net divides the separating hopper into an upper chamber and a lower chamber, a feeding pipe communicating with the lower chamber is provided on the side wall of the separating hopper, an exhaust pipe communicating with the upper chamber is provided at the upper end of the separating hopper, the exhaust pipe is connected to an exhaust fan, a discharge port is provided at the lower end of the separating hopper, and a horizontally arranged discharge cylinder is fixedly installed at the lower end of the separating hopper. One end of the discharge cylinder is fixedly connected to and communicates with the discharge port, and the other end of the discharge cylinder is the discharge end and is provided with a discharge port. A pusher screw is rotatably installed inside the discharge cylinder, the outer contour of the blade of the pusher screw is clearance-fitted with the inner wall of the discharge cylinder, and a drive motor for driving the pusher screw to rotate is provided at the end of the discharge cylinder.
[0005] As a preferred embodiment, the separating net is a cone-shaped separating net, the upper end of which is fixed inside the top of the separating hopper, and the tip of the separating net is set downwards and points towards the discharge port.
[0006] As a preferred embodiment, the separating net is a conical separating net, with a connecting flange at the upper end for easy fixing to the top of the separating hopper, and the lower end of the separating net pointing towards the center of the discharge port.
[0007] As a preferred embodiment, the separating hopper includes a first cylindrical section, a first conical section at the lower end of the first cylindrical section, a second cylindrical section at the lower end of the first conical section, a second conical section at the lower end of the second cylindrical section, a discharge port at the lower end of the second conical section, a feed pipe connected to the first cylindrical section, and a support frame externally supporting the first conical section.
[0008] As a preferred embodiment, the second tapered section is provided with several dividing rods at the material discharge port, and the gaps between the dividing rods form a material discharge gap that facilitates the discharge of plastic ions.
[0009] As a preferred embodiment, the separator is a circular rod.
[0010] As a preferred embodiment, the separator is a separator with a triangular cross-section, and the tip of the separator is positioned upwards.
[0011] As a preferred embodiment, the separator rod is disposed on a separator ring, the discharge cylinder is provided with a lower connecting flange, and the lower end of the second conical section is provided with an upper connecting flange. The upper connecting flange and the lower connecting flange are detachably fixed together and the separator ring is pressed and fixed.
[0012] After adopting the above technical solution, the effect of this utility model is as follows: The viscous plastic particle conveying and feeding device includes a separating hopper. A separating mesh is installed inside the separating hopper, dividing it into an upper chamber and a lower chamber. A feed pipe communicating with the lower chamber is provided on the side wall of the separating hopper. An exhaust pipe communicating with the upper chamber is provided at the upper end of the separating hopper and is connected to a suction fan. A discharge port is provided at the lower end of the separating hopper. A horizontally arranged discharge cylinder is also fixedly installed at the lower end of the separating hopper. One end of the discharge cylinder is fixedly connected to and communicates with the discharge port. The other end of the discharge cylinder is the discharge end and has a discharge port. A pusher is rotatably installed inside the discharge cylinder. The screw has blades with a clearance fit between the outer contour of the pusher screw and the inner wall of the discharge cylinder. A drive motor is installed at the end of the discharge cylinder to drive the pusher screw to rotate. First, the suction fan draws air from the separation hopper through the suction pipe. Because the pusher screw blades have a clearance fit with the inner wall inside the discharge cylinder, the airflow is relatively small, thus drawing air from the feed pipe to feed the material. Then, the viscous plastic particles enter the discharge cylinder from the discharge port. Next, the drive motor drives the pusher screw to rotate, thereby rotating the blades. The pusher screw continuously conveys the viscous plastic particles, which are eventually discharged from the discharge port. This conveying and feeding device can continuously convey materials, preventing blockage of the feed pipe due to the suction fan stopping.
[0013] Furthermore, since the separating net is a cone-shaped separating net, the upper end of the separating net is fixed inside the top of the separating hopper, and the tip of the separating net is set downward and points towards the material discharge port; the cone-shaped separating net can effectively allow the sticky plastic particles entering through the feed pipe to fall down, avoiding them from sticking to the separating net, and at the same time preventing them from being drawn into the suction pipe.
[0014] Furthermore, since the separating net is a conical separating net, the upper end of the separating net is provided with a connecting flange for easy fixing to the top of the separating hopper, and the lower end of the separating net points to the center of the discharge port; the connecting flange facilitates the installation of the separating net and improves the usage effect.
[0015] Furthermore, the separating hopper includes a first cylindrical section, with a first tapered section at the lower end of the first cylindrical section, a second cylindrical section at the lower end of the first tapered section, and a second tapered section at the lower end of the second cylindrical section. The discharge port is located at the lower end of the second tapered section, and the feed pipe is connected to the first cylindrical section. The first tapered section is externally supported by a support frame. The connection between the first cylindrical section and the first tapered section ensures that the sticky plastic particles can be effectively guided and fall after entering the separating hopper. The second cylindrical section ensures that the sticky plastic particles have a certain storage space after falling. Then, the second tapered section further guides the sticky plastic particles in the second cylindrical section to fall, preventing the material from falling too quickly and ensuring the stability of the material falling.
[0016] Furthermore, since several dividing rods are provided on the second conical section at the discharge port, the gaps between the dividing rods form a discharge gap that facilitates the discharge of plastic ions; by blocking the discharge port, the sticky plastic particles slowly fall into the discharge cylinder at the discharge port, which reduces the airflow from the discharge cylinder into the separation hopper and ensures the efficiency of material extraction.
[0017] Furthermore, since the dividing rod is a circular rod, it not only blocks the falling material but also prevents sticky plastic particles from adhering to the dividing rod, thus ensuring the stability of the falling material.
[0018] Furthermore, since the separator is a triangular separator with its tip pointing upwards, it can effectively block falling material and also prevent sticky plastic particles from adhering.
[0019] Furthermore, since the dividing rod is mounted on a dividing ring, the discharge cylinder is equipped with a lower connecting flange, and the lower end of the second conical section is equipped with an upper connecting flange, the upper connecting flange and the lower connecting flange are detachably fixed together and the dividing ring is pressed and fixed; thus ensuring the stable installation of the dividing rod. Attached Figure Description
[0020] The present invention will be further described below with reference to the accompanying drawings and embodiments.
[0021] Figure 1 This is a perspective view of an embodiment of the present utility model;
[0022] Figure 2 This is a cross-sectional view of an embodiment of the present utility model;
[0023] Figure 3 This is a schematic diagram of the structure of the circular rod separator according to an embodiment of the present invention;
[0024] Figure 4 This is a schematic diagram of the structure of the triangular separator rod according to an embodiment of the present invention;
[0025] In the attached diagram: 1. Separating hopper; 2. First cylindrical section; 3. First conical section; 4. Second cylindrical section; 5. Second conical section; 6. Separating screen; 7. Upper chamber; 8. Lower chamber; 9. Feed pipe; 10. Exhaust pipe; 11. Discharge port; 12. Discharge cylinder; 13. Discharge port; 14. Push screw; 15. Blade; 16. Drive motor; 17. Support frame; 18. Connecting flange; 19. Separating rod; 20. Separating ring; 21. Lower connecting flange; 22. Upper connecting flange. Detailed Implementation
[0026] The present invention will be further described in detail below through specific embodiments.
[0027] like Figures 1 to 4As shown, a conveying and feeding device for viscous plastic particles includes a separating hopper 1. A separating mesh 6 is installed inside the separating hopper 1, dividing it into an upper chamber 7 and a lower chamber 8. A feed pipe 9 communicating with the lower chamber 8 is installed on the side wall of the separating hopper 1. An exhaust pipe 10 communicating with the upper chamber 7 is installed at the upper end of the separating hopper 1, and the exhaust pipe 10 is connected to a suction fan. A discharge port 11 is installed at the lower end of the separating hopper 1. A horizontally arranged discharge cylinder 12 is fixedly installed at the lower end of the hopper 1. One end of the discharge cylinder 12 is fixedly connected to and communicates with the discharge port 11. The other end of the discharge cylinder 12 is the discharge end and is provided with a discharge port 13. A pusher screw 14 is rotatably installed inside the discharge cylinder 12. The outer contour of the blade 15 of the pusher screw 14 is clearance-fitted with the inner wall of the discharge cylinder 12. A drive motor 16 for driving the pusher screw 14 to rotate is provided at the end of the discharge cylinder.
[0028] In this embodiment, the separation hopper 1 is supported and installed by the support frame 17. When the suction fan draws into the separation hopper 1, a negative pressure is formed inside the separation hopper 1, so the feed pipe 9 can draw in the air. The outer contour of the blade 15 of the pusher screw 14 is fitted with the inner wall of the discharge cylinder 12 with a clearance, which reduces the amount of air entering the discharge port 13 and avoids affecting the air drawing in the feed pipe 9. In this way, the separation hopper 1 can continuously feed and discharge material, and the discharge cylinder 12 can continuously discharge material, ensuring the efficiency of conveying and feeding.
[0029] like Figure 2 As shown, the separating net 6 is a cone-shaped separating net 6. The upper end of the separating net 6 is fixed inside the top of the separating hopper 1. The tip of the separating net 6 is set downward and points towards the discharge port 11. Since the separating net 6 is cone-shaped, when the feed pipe 9 feeds, the sticky plastic particles will come into contact with the separating net 6. The cone-shaped surface can effectively guide the sticky plastic particles, so that the sticky plastic particles fall accurately and at the same time prevent them from being drawn into the suction pipe 10.
[0030] Furthermore, the separating net 6 is a conical separating net 6, and the upper end of the separating net 6 is provided with a connecting flange 18 for easy fixing to the top of the separating hopper 1. The lower end of the separating net 6 points to the center of the discharge port 11. The connecting flange 18 facilitates the installation of the separating net 6. At the same time, the separating net 6 is conical, and the surface arc transition is smoother, making the discharge after feeding more accurate and improving the use effect.
[0031] like Figure 1 and Figure 2As shown, the separating hopper 1 includes a first cylindrical section 2, a first conical section 3 at the lower end of the first cylindrical section 2, a second cylindrical section 4 at the lower end of the first conical section 3, a second conical section 5 at the lower end of the second cylindrical section 4, a discharge port 11 at the lower end of the second conical section 5, a feed pipe 9 connected to the first cylindrical section 2, and a support frame 17 externally supporting the first conical section 3. The connection between the first cylindrical section 2 and the first conical section 3 ensures that the sticky plastic particles can be effectively guided and fall after entering the separating hopper 1. The second cylindrical section 4 ensures that the sticky plastic particles have a certain storage space after falling. Then, the second conical section 5 further guides the sticky plastic particles in the second cylindrical section 4 to fall, preventing the material from falling too quickly and ensuring the stability of the material falling.
[0032] like Figure 2 and Figure 3 As shown, a number of dividing rods 19 are provided on the second conical section 5 at the discharge port 11. The gap between the dividing rods 19 forms a discharge gap to facilitate the discharge of plastic ions. The blocking at the discharge port 11 causes the sticky plastic particles to slowly fall into the discharge cylinder 12, which reduces the airflow from the discharge cylinder 12 into the separation hopper 1 and ensures the material extraction efficiency.
[0033] Furthermore, the dividing rod 19 is a circular rod; the surface of the circular rod is smooth, which not only blocks the falling material but also prevents sticky plastic particles from adhering to the dividing rod, thus ensuring the stability of the falling material.
[0034] Of course, another solution can be adopted, wherein the separator 19 is a separator 19 with a triangular cross section and the tip of the separator 19 is set upward; the inclined surfaces on both sides of the triangular separator 19 also have guiding properties, guiding the sticky plastic particles, reducing the area of material falling, effectively blocking the falling material, and also preventing the sticky plastic particles from sticking together.
[0035] In this embodiment, the dividing rod 19 is disposed on a dividing ring 20, the discharge cylinder 12 is provided with a lower connecting flange 21, and the lower end of the second conical section 5 is provided with an upper connecting flange 22. The upper connecting flange 22 and the lower connecting flange 21 are detachably fixed together and press the dividing ring 20 tightly and fixed together. The upper connecting flange 22 and the lower connecting flange 21 are detachably fixed together by bolts, so that the material hopper and the discharge cylinder 12 can be firmly connected, and at the same time, the installation of the dividing rod can be ensured to be stable.
[0036] The working principle of this embodiment is as follows: First, the suction fan draws air into the separation hopper 1 through the suction pipe 10 and feeds the material into the feed pipe 9. The sticky plastic particles will enter the discharge cylinder 12 from the discharge port 11. The separator rod 19 blocks the sticky plastic particles from being discharged. Then, the drive motor 16 drives the pusher screw 14 to rotate, which in turn drives the blades 15 to rotate. The pusher screw 14 will continuously transport the sticky plastic particles and finally discharge them from the discharge port 13.
[0037] The above-described embodiments are merely preferred embodiments of the present utility model and are not intended to limit the scope of the present utility model. Any modifications and alterations to the technical solution of the present utility model without departing from its design spirit shall fall within the protection scope defined by the claims of the present utility model.
Claims
1. A feeding device for conveying viscous plastic particles, comprising a separating hopper, wherein a separating mesh is provided inside the separating hopper, the separating mesh dividing the separating hopper into an upper chamber and a lower chamber, a feeding pipe communicating with the lower chamber is provided on the side wall of the separating hopper, and an exhaust pipe communicating with the upper chamber is provided at the upper end of the separating hopper, the exhaust pipe being connected to a suction fan, characterized in that: The lower end of the separating hopper is provided with a discharge port, and a horizontally arranged discharge cylinder is also fixedly installed at the lower end of the separating hopper. One end of the discharge cylinder is fixedly connected to and communicates with the discharge port, and the other end of the discharge cylinder is the discharge end and is provided with a discharge port. A pusher screw is rotatably installed inside the discharge cylinder. The outer contour of the blade of the pusher screw is clearance-fitted with the inner wall of the discharge cylinder. A drive motor for driving the pusher screw to rotate is provided at the end of the discharge cylinder.
2. The viscous plastic particle conveying and feeding device as described in claim 1, characterized in that: The separating net is a cone-shaped separating net, the upper end of which is fixed inside the top of the separating hopper, and the tip of the separating net is set downward and points towards the discharge port.
3. The viscous plastic particle conveying and feeding device as described in claim 2, characterized in that: The separating net is a conical separating net, with a connecting flange at the upper end for easy fixing to the top of the separating hopper, and the lower end of the separating net pointing towards the center of the discharge port.
4. The viscous plastic particle conveying and feeding device as described in claim 3, characterized in that: The separating hopper includes a first cylindrical section, a first tapered section at the lower end of the first cylindrical section, a second cylindrical section at the lower end of the first tapered section, a second tapered section at the lower end of the second cylindrical section, a discharge port at the lower end of the second tapered section, a feed pipe connected to the first cylindrical section, and a support frame externally supporting the first tapered section.
5. The viscous plastic particle conveying and feeding device as described in claim 4, characterized in that: The second tapered section has several dividing rods at the material discharge port, and the gaps between the dividing rods form a discharge gap that facilitates the discharge of plastic ions.
6. The viscous plastic particle conveying and feeding device as described in claim 5, characterized in that: The separator is a circular rod.
7. The viscous plastic particle conveying and feeding device as described in claim 6, characterized in that: The separator is a triangular separator with its tip pointing upwards.
8. A conveying and feeding device for viscous plastic particles as described in claim 6 or 7, characterized in that: The separator rod is mounted on a separator ring, the discharge cylinder is provided with a lower connecting flange, and the lower end of the second conical section is provided with an upper connecting flange. The upper connecting flange and the lower connecting flange are detachably fixed together and press the separator ring tightly.