A bidirectional conveying device for conveying polyurethane masses

Abstract

The utility model relates to polyurethane material conveying equipment technical field, concretely for a kind of bidirectional conveying equipment for conveying polyurethane material, including storage mechanism, discharge control mechanism and bidirectional conveying mechanism;The storage mechanism includes sealed box, the upper end of the sealed box is equipped with feed inlet, the lower end of the sealed box is equipped with discharge port, the top end of the feed inlet is equipped with cover, the side of the sealed box is equipped with inlet valve, the other side of sealed box is equipped with outlet valve;The discharge control mechanism is installed at the discharge port, and the bidirectional conveying mechanism is installed at the lower end of the discharge control mechanism.By inert gas into sealed box through inlet valve, thereby solve the problem that material is contacted with air, ensure the product quality and stability of polyurethane material.By auger one and auger two in bidirectional conveying mechanism are set in opposite direction, under the driving of driving motor, the bidirectional conveying of material can be realized, simple operation improves conveying efficiency.

Description

Technical Field

[0001] This utility model relates to the technical field of polyurethane material conveying equipment, specifically a bidirectional conveying equipment for conveying polyurethane materials. Technical Background Polyurethane materials require conveying during production and processing. In the prior art, Chinese patent application number CN202120001265.9 discloses a conveying pipe for conveying polyurethane materials. It directly pulls up the conveying pipe through a positioning ring and positions its fixing point, so that it is synchronously fixed with the U-shaped element. The operation is relatively labor-saving and can be conveniently positioned and fixed.

[0002] However, this conveying pipe has three major problems: First, it can only convey in one direction. When it is necessary to change the conveying direction, the pipeline needs to be disassembled and reassembled, which is cumbersome and inefficient. Second, the sealing structure is simple, which poses a high risk of material leakage and air infiltration, and easily causes the polyurethane material to react with oxygen and deteriorate. Third, the material has no guiding structure, the flow path is chaotic, and it is easy to accumulate and block at the corners of the pipeline, affecting the continuity of conveying. Utility Model Content

[0003] The present invention aims to solve the problems of polyurethane material conveying devices in the prior art, such as easy reaction with oxygen, only unidirectional conveying, poor sealing performance, and poor material flow and easy blockage.

[0004] To achieve the above objectives, this utility model provides the following technical solution: a bidirectional conveying device for conveying polyurethane materials, comprising a material storage mechanism, a material discharge control mechanism, and a bidirectional conveying mechanism; The storage mechanism includes a sealed box, with a feed inlet at the upper end and a discharge outlet at the lower end. A cover plate is provided at the top of the feed inlet, an air inlet valve is provided on one side of the sealed box, and an air outlet valve is provided on the other side of the sealed box. The discharge control mechanism is installed at the discharge port, and the bidirectional conveying mechanism is installed at the lower end of the discharge control mechanism.

[0005] Based on the above technical solution, the present invention can be further improved as follows: Preferably, a storage cylinder is installed inside the sealed box, the upper and lower ends of the storage cylinder are open, and the outer wall of the storage cylinder is provided with several through holes.

[0006] Preferably, the bottom end of the storage cylinder is provided with a flow guide shroud, which is funnel-shaped and has a discharge port.

[0007] Preferably, there are two discharge ports, and the discharge control mechanism includes a feeding pipe with two branch pipes inside. Each branch pipe has a discharge port at its lower end and the branch pipes are opposite to the discharge ports. Each branch pipe has a sliding groove on its side wall and a baffle is inserted in the sliding groove.

[0008] Preferably, the bidirectional conveying mechanism includes a conveying pipe, a drive motor, and a rotating shaft. The drive motor is located at one end of the conveying pipe, and the output end of the drive motor passes through the side wall of the conveying pipe and is connected to the rotating shaft. The rotating shaft is equipped with an auger and a screw conveyor, the auger and the screw conveyor are in opposite directions, and the positions of the auger and the screw conveyor correspond to the two discharge ports respectively. The conveying pipe is equipped with discharge valves at both ends.

[0009] Preferably, a limiting plate is installed on the rotating shaft, and the limiting plate is located between the first auger and the second auger.

[0010] Preferably, the inner wall of the sealed box is provided with a sealing layer, and the sealing layer is made of fluororubber.

[0011] Preferably, a flange is provided at the connection between the conveying pipe and the discharge pipe, and a sealing gasket is provided on the flange, wherein the sealing gasket is a metal-clad gasket.

[0012] Preferably, a sealing gasket is provided at the connection between the cover plate and the feed inlet, the sealing gasket is made of silicone, and one side of the cover plate is rotatably connected to the sealing box via a hinge.

[0013] This utility model has the following advantages: 1. Inert gas is introduced into the sealed box through the air inlet valve to solve the problem of material contact with air, thereby ensuring the product quality and stability of polyurethane materials.

[0014] 2. By using the two augers in the bidirectional conveying mechanism, which are arranged in opposite directions, bidirectional continuous conveying of materials can be achieved under the drive of the motor. The operation is simple and the conveying efficiency and continuity are improved.

[0015] 3. The sealing structure, consisting of a sealing layer on the inner wall of the sealed box, a sealing gasket at the connection between the conveying pipe and the discharge pipe, and a sealing gasket at the connection between the cover plate and the inlet, greatly enhances the sealing performance of the bidirectional conveying equipment, preventing polyurethane material leakage or air from entering the sealed box.

[0016] 4. The funnel-shaped guide hood at the bottom of the storage cylinder can guide the material to flow smoothly, reduce the blockage of polyurethane material, and further ensure the continuity and stability of polyurethane material conveying. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a cross-sectional view of the present invention; Figure 3 This is a schematic diagram of the material storage mechanism of this utility model; Figure 4 This is a schematic diagram of the material discharge control mechanism of this utility model; Figure 5 This is a schematic diagram of the bidirectional conveying mechanism of this utility model.

[0018] The attached figures are labeled as follows: 1. Material storage mechanism; 11. Sealed box; 12. Feed inlet; 13. Cover plate; 14. Air inlet valve; 15. Air outlet valve; 16. Material storage cylinder; 17. Flow guide hood; 2. Discharge control mechanism; 21. Discharge pipe; 22. Sliding groove; 23. Baffle; 3. Bidirectional conveying mechanism; 31. Conveying pipe; 32. Outer shell; 33. Discharge valve; 34. Drive motor; 35. Rotating shaft; 36. Screwdriver 1; 37. Screwdriver 2; 38. Limiting plate. Detailed Implementation

[0019] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0020] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model 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 therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance. The utility model will be further described in detail below with reference to the accompanying drawings.

[0021] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0022] Reference Figure 1 To be continued Figure 5 As shown, this utility model discloses a bidirectional conveying device for conveying polyurethane materials, including: a material storage mechanism 1, a material discharge control mechanism 2, and a bidirectional conveying mechanism 3; The storage mechanism 1 includes a sealed box 11. The upper end of the sealed box 11 is provided with a feed inlet 12, and the lower end of the sealed box 11 is provided with a discharge outlet. The top of the feed inlet 12 is provided with a cover plate 13. One side of the sealed box 11 is provided with an air inlet valve 14, and the other side of the sealed box 11 is provided with an air outlet valve 15. The air inlet valve 14 is used to introduce inert gas into the sealed box 11, and the air outlet valve 15 can discharge the air in the sealed box 11, so that an inert gas sealed environment is formed inside the sealed box 11. By introducing inert gas into the sealed box 11 through the air inlet valve 14, air is isolated, preventing the polyurethane material from reacting with air and ensuring the quality of the polyurethane material. In this embodiment, nitrogen is introduced into the sealed box 11 to ensure the activity, processing performance and quality of the final product of the polyurethane material.

[0023] The discharge control mechanism 2 is installed at the discharge port, and the bidirectional conveying mechanism 3 is installed at the lower end of the discharge control mechanism 2. The discharge control mechanism 2 is used to receive polyurethane material falling from the sealed box 11 and ensure that the polyurethane material is normally conveyed to the bidirectional conveying mechanism 3 according to the usage.

[0024] Furthermore, a storage cylinder 16 is installed inside the sealed box 11. The storage cylinder 16 has openings at both the top and bottom, and several through holes are provided on the outer wall of the storage cylinder 16. A flow guide shroud 17 is provided at the bottom of the storage cylinder 16. The flow guide shroud 17 is funnel-shaped and has two discharge ports.

[0025] The storage cylinder 16 enables precise temporary storage and uniform nitrogen distribution of polyurethane materials: compared to the larger overall space of the sealed box 11, the storage cylinder 16 can control the internal volume to match the single delivery volume, avoiding the accumulation of polyurethane materials in the sealed box 11 and resulting in uneven nitrogen distribution; at the same time, the storage cylinder 16 has an open design at both the top and bottom, with the top opening facilitating the receipt of materials fed from the inlet 12, and the bottom opening working in conjunction with the guide hood 17 to ensure stable material descent. Furthermore, several through holes on the outer wall of the storage cylinder 16 ensure rapid flow of nitrogen inside and outside the storage cylinder 16, preventing localized contact between the polyurethane materials and air. The bottom of the storage cylinder 16 is equipped with a guide hood 17, which is funnel-shaped and guides the material along a fixed path through the discharge port and outlet to fall smoothly into the discharge pipe 21, preventing material residue or accumulation at the bottom of the storage cylinder 16.

[0026] The discharge port is provided with two outlets. The discharge control mechanism 2 includes a discharge pipe 21. The discharge pipe 21 has two branch pipes inside. Each branch pipe has a discharge port at its lower end. The branch pipes correspond to the discharge ports, and each branch pipe corresponds to one discharge port. Each branch pipe has a sliding groove 22 on its side wall. A baffle 23 is inserted in the sliding groove 22. The baffle 23 can independently block the polyurethane material falling from the corresponding branch pipe, so as to realize the separate control of the polyurethane material conveyed in two directions, improving the flexibility and convenience of use.

[0027] Furthermore, each baffle 23 is provided with an independent pull plate at one end. Pulling the pull plate can drive the baffle 23 to move along the sliding groove 22 on the side wall of the feed pipe 21. The sliding groove 22 provides a stable moving path for the baffle 23, so that the two baffles 23 can be opened or closed independently: when it is necessary to convey material to the forward end of the conveying pipe 31, only the baffle 23 of the corresponding forward branch pipe is opened; when it is necessary to convey material to the reverse end of the conveying pipe 31, only the baffle 23 of the corresponding reverse branch pipe is opened, so as to avoid the mixing of materials in the conveying pipe 31.

[0028] The bidirectional conveying mechanism 3 includes a conveying pipe 31, a drive motor 34, and a rotating shaft 35. The conveying pipe 31 is a channel for the forward and reverse flow of materials. The drive motor 34 is located at one end of the conveying pipe 31 and provides power for the material flow. The outer end of the drive motor 34 is provided with a housing 32, which protects the drive motor 34. The output end of the drive motor 34 passes through the side wall of the conveying pipe 31 and is connected to the rotating shaft 35. The rotating shaft 35 is provided with an auger 1 36 and an auger 2 37. The auger 1 36 and the auger 2 37 are in opposite directions. The positions of the auger 1 36 and the auger 2 37 correspond to the two discharge ports, respectively. The conveying pipe 31 is provided with discharge valves 33 at both ends. When the shaft 35 rotates forward, the first auger 36 drives the material to flow forward along the conveying pipe 31; when the shaft 35 rotates in reverse, the second auger 37 drives the material to flow in the opposite direction along the conveying pipe 31, realizing bidirectional flow of the material. The bottom end of the conveying pipe 31 is symmetrically equipped with a discharge valve 33, which can discharge polyurethane material that can flow in either the forward or reverse direction through the discharge valve 33.

[0029] In practical applications, when the forward conveying pipeline fails, the material is transferred to the backup station by reverse conveying; or, when the single conveying volume is too large, the excess material is guided back to the downstream temporary storage tank by reverse conveying; or, when the production line switches products, the residual material in the conveying pipe 31 is emptied by reverse conveying to avoid mixing of different materials, meet the needs of various scenarios, and improve the flexibility of use.

[0030] A limiting disk 38 is installed on the rotating shaft 35, and the limiting disk 38 is located between the first auger 36 and the second auger 37. The limiting disk 38 restricts the axial movement of the rotating shaft 35 to ensure its stable rotation.

[0031] The inner wall of the sealed box 11 is provided with a sealing layer, which is made of fluororubber. The sealing layer can enhance the sealing performance of the sealed box 11, prevent air from entering and affecting the materials, and resist the corrosion of polyurethane materials, thereby improving the service life of the sealed box 11.

[0032] A flange is provided at the connection between the conveying pipe 31 and the discharge pipe 21, and a sealing gasket is provided on the flange. The sealing gasket is a metal-coated gasket. The sealing gasket can improve the sealing performance of the connection and prevent the polyurethane material from leaking or air from entering the discharge pipe 21 or the conveying pipe 31 during forward or reverse flow.

[0033] A sealing gasket made of silicone is provided at the connection between the cover plate 13 and the feed inlet 12. One side of the cover plate 13 is rotatably connected to the sealing box 11 via a hinge. This allows the cover plate 13 to open and close flexibly, facilitating the addition of polyurethane materials while ensuring the sealing of the sealing box 11.

[0034] The usage process of this utility model is as follows: First, open the cover plate 13 by rotating the hinge, and accurately put the polyurethane material into the storage cylinder 16 inside the sealed box 11 from the feed port 12. Then immediately close the cover plate 13. At this time, the silicone sealing gasket at the connection between the cover plate 13 and the feed port 12 will fit tightly, completely blocking the passage of outside air into the sealed box 11, laying the foundation for the subsequent construction of the nitrogen environment.

[0035] Next, the inlet valve 14 and outlet valve 15 are opened simultaneously: nitrogen gas is continuously injected into the sealed box 11 through the inlet valve 14, gradually squeezing out the original air in the sealed box 11, and causing the air to be slowly discharged through the outlet valve 15. The inert nature of nitrogen gas isolates the air and prevents the polyurethane material from undergoing an oxidation reaction with oxygen in the air. At the same time, nitrogen gas will quickly permeate into the interior of the storage cylinder 16 through the through holes on the side wall of the storage cylinder 16, ensuring that the material in the storage cylinder 16 is also completely enveloped by nitrogen gas, with no risk of local contact with air.

[0036] When conveying materials in the forward direction, pull the pull plate corresponding to the forward branch pipe at the discharge pipe 21, drive the baffle 23 to move along the sliding groove 22, open the forward discharge channel, and the limiting plate 38 will restrict the flow area of ​​the material. It will confine the polyurethane material in the space of the conveying pipe 31 near the screw conveyor 36, prevent the material from spreading randomly in the conveying pipe 31, and ensure that the material can flow stably and efficiently to the forward end of the conveying pipe 31 along the predetermined forward path under the push of the screw conveyor 36 spiral blades, until it is discharged from the discharge valve 33 at the forward end. At this time, the space on the other side of the limiting plate 38 is in a relatively "standby" state.

[0037] When reverse conveying is required, the pull plate corresponding to the reverse branch pipe at the discharge pipe 21 is pulled to open the reverse discharge channel (at this time, the baffle 23 of the forward branch pipe remains closed). The drive motor 34 reverses, causing the rotating shaft 35 to rotate in the reverse direction. The limiting plate 38 also rotates in the reverse direction with the rotating shaft 35. At this time, the limiting plate 38 restricts the material to the space on the side of the conveying pipe 31 near the auger 2 37. After the material falls from the reverse branch pipe of the discharge pipe 21, under the reverse thrust of the spiral blades of the auger 2 37, it flows towards the reverse end of the conveying pipe 31 within the space limited by the limiting plate 38, and is finally discharged from the discharge valve 33 at the reverse end. In this process, the limiting plate 38 not only ensures the stable path of the reverse conveyed material, but also isolates the forward conveying area, preventing the material from the two directions from mixing in the conveying pipe 31, which greatly improves the accuracy and reliability of bidirectional conveying.

[0038] In this utility model, the various mechanisms of the bidirectional conveying device work together. The material storage mechanism 1 creates a nitrogen environment to isolate the polyurethane material from the air. The material discharge control mechanism 2 precisely controls the material's falling path through a double baffle design. The bidirectional conveying mechanism 3 relies on a forward and reverse auger to achieve bidirectional material conveying. The three are closely connected, which not only ensures the quality of the material but also meets the needs of multi-directional conveying, improving the flexibility and convenience of use.

[0039] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A bidirectional conveying device for conveying polyurethane materials, characterized in that, include: Storage mechanism (1), discharge control mechanism (2) and bidirectional conveying mechanism (3); The storage mechanism (1) includes a sealed box (11), with a feed inlet (12) at the upper end of the sealed box (11) and a discharge outlet at the lower end of the sealed box (11). A cover plate (13) is provided at the top of the feed inlet (12), an air inlet valve (14) is provided on one side of the sealed box (11), and an air outlet valve (15) is provided on the other side of the sealed box (11). The discharge control mechanism (2) is installed at the discharge port, and the bidirectional conveying mechanism (3) is installed at the lower end of the discharge control mechanism (2). There are two discharge ports. The discharge control mechanism (2) includes a discharge pipe (21). The discharge pipe (21) has two branch pipes inside. Each branch pipe has a discharge port at its lower end. The branch pipes are opposite to the discharge ports. Each branch pipe has a sliding groove (22) on its side wall. A baffle (23) is inserted in the sliding groove (22). The bidirectional conveying mechanism (3) includes a conveying pipe (31), a drive motor (34), and a rotating shaft (35). The drive motor (34) is located at one end of the conveying pipe (31). The output end of the drive motor (34) passes through the side wall of the conveying pipe (31) and is connected to the rotating shaft (35). The rotating shaft (35) is provided with an auger 1 (36) and an auger 2 (37). The auger 1 (36) and the auger 2 (37) are in opposite directions. The positions of the auger 1 (36) and the auger 2 (37) correspond to the two discharge ports respectively. The conveying pipe (31) is provided with discharge valves (33) at both ends.

2. The bidirectional conveying device for conveying polyurethane materials according to claim 1, characterized in that, The sealed box (11) is equipped with a storage cylinder (16), which has open ends at the top and bottom, and has several through holes on its outer wall.

3. A bidirectional conveying device for conveying polyurethane materials according to claim 2, characterized in that, The bottom end of the storage cylinder (16) is provided with a flow guide (17), which is horn-shaped and has a discharge port.

4. A bidirectional conveying device for conveying polyurethane materials according to claim 1, characterized in that, A limiting plate (38) is installed on the rotating shaft (35), and the limiting plate (38) is located between the first auger (36) and the second auger (37).

5. A bidirectional conveying device for conveying polyurethane materials according to claim 1, characterized in that, The inner wall of the sealed box (11) is provided with a sealing layer, and the material of the sealing layer is fluororubber.

6. A bidirectional conveying device for conveying polyurethane materials according to claim 1, characterized in that: A flange is provided at the connection between the conveying pipe (31) and the discharge pipe (21), and a sealing gasket is provided on the flange. The sealing gasket is a metal-clad gasket.

7. A bidirectional conveying device for conveying polyurethane materials according to claim 1, characterized in that: A sealing gasket is provided at the connection between the cover plate (13) and the feed inlet (12). The sealing gasket is made of silicone. One side of the cover plate (13) is rotatably connected to the sealing box (11) via a hinge.

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