Chemical raw material conveying device

Abstract

The invention relates to the technical field of chemical raw material conveying, and provides a chemical raw material conveying device which comprises a conveying pipeline, the conveying pipeline is used for conveying chemical raw materials, a material inlet and a material outlet are formed in the positions, close to the two ends, of the side wall of the conveying pipeline correspondingly, and the two ends of the conveying pipeline are closed ends; the shaft body is rotationally arranged in the conveying pipeline, and the shaft body and the conveying pipeline are coaxial; the spiral conveying blade is arranged on the shaft body in a surrounding manner and is used for conveying chemical raw materials from the material inlet to the material outlet; the spiral anti-blocking blade is arranged on the shaft body in a surrounding mode and located on one side of the spiral conveying blade, the spiral direction of the spiral anti-blocking blade is opposite to that of the spiral conveying blade, and a gap is formed between the spiral anti-blocking blade and the spiral conveying blade and located beside the material outlet. By means of the technical scheme, the technical problem that a conveying device in the related technology is prone to blocking when conveying chemical raw materials is solved.

Description

Technical Field

[0001] Embodiments of the present disclosure relate to the technical field of chemical raw material transportation, and more specifically, to a chemical raw material transportation device. Background Art

[0002] In the production process of polyether polyols, it is common to feed sucrose (i.e., the chemical raw material to be transported) into a reaction kettle for reaction. The physical properties of sucrose bring many problems to the transportation process.

[0003] First of all, before sucrose transportation, caking may occur in sucrose, which is very likely to block the material inlet of the transportation device. Secondly, sucrose is prone to adhesion to each other during transportation, and then caking occurs. Moreover, with the extrusion and friction of the material during transportation, the caking problem will become more serious. Once the caked sucrose enters the transportation pipeline, it is extremely easy to cause pipeline blockage (especially near the material outlet). Such blockage will not only interrupt the production process, affect production efficiency, but also increase a large amount of cleaning costs and downtime, having a greater negative impact on the production operation of the enterprise.

[0004] In summary, the existing transportation devices have obvious deficiencies in their anti-blocking ability (especially near the material inlet and the material outlet) when dealing with sucrose transportation. In order to ensure the high efficiency and stability of sucrose transportation in chemical production, improve production efficiency, and reduce production costs, it is particularly urgent to develop a chemical raw material transportation device specifically for the characteristics of sucrose. Summary of the Invention

[0005] To overcome the above defects, embodiments of the present disclosure provide a chemical raw material transportation device, which solves the technical problem that the transportation device in the related art is prone to blockage when transporting chemical raw materials.

[0006] According to one aspect, at least one embodiment of the present disclosure provides a chemical raw material transportation device, including: A transportation pipeline for transporting chemical raw materials. The side wall of the transportation pipeline is respectively provided with a material inlet and a material outlet near its two ends, and the two ends of the transportation pipeline are closed ends; A shaft body rotatably arranged in the transportation pipeline, and the shaft body is coaxial with the transportation pipeline; A spiral transportation blade wound around the shaft body, and the spiral transportation blade is used to transport chemical raw materials from the material inlet to the material outlet; A spiral anti-blocking blade wound around the shaft body, the spiral anti-blocking blade is located on one side of the spiral transportation blade, the spiral anti-blocking blade has a reverse helix direction to that of the spiral transportation blade, and there is a gap between the spiral anti-blocking blade and the spiral transportation blade, and the gap is located beside the material outlet.

[0007] For example, a chemical raw material conveying device provided by at least one embodiment of the present disclosure The spiral conveying blade is divided into a front section, a middle section, and a rear section along its conveying direction. The pitch of the spiral conveying blade gradually increases from the front section to the middle section and gradually decreases from the middle section to the rear section.

[0008] For example, a chemical raw material conveying device provided by at least one embodiment of the present disclosure The pitch of the spiral anti-blocking blade gradually increases from one end close to the interval to the other end.

[0009] For example, a chemical raw material conveying device provided by at least one embodiment of the present disclosure A material output pipe is provided at the material outlet. An anti-blocking push rod reciprocates in the material output pipe, and the anti-blocking push rod is used to push the chemical raw material along the conveying direction of the material output pipe.

[0010] For example, a chemical raw material conveying device provided by at least one embodiment of the present disclosure The shaft body has an eccentric shaft portion located at the interval. The eccentric shaft portion of the shaft body is eccentrically arranged relative to other parts. An installation ring is rotatably sleeved on the eccentric shaft portion. One end of the anti-blocking push rod passes through the material outlet and is connected to the installation ring, and the other end is a free end.

[0011] For example, a chemical raw material conveying device provided by at least one embodiment of the present disclosure The anti-blocking push rod is conical, and the diameter of the free end of the anti-blocking push rod is smaller than that of the other end.

[0012] For example, a chemical raw material conveying device provided by at least one embodiment of the present disclosure A plurality of pushing portions are provided on the side wall of the anti-blocking push rod. The plurality of pushing portions are distributed along the axial direction of the anti-blocking push rod. The pushing portion has an annular guiding surface and an annular pushing surface, and the annular guiding surface is located above the annular pushing surface.

[0013] For example, a chemical raw material conveying device provided by at least one embodiment of the present disclosure further includes: A hopper is provided at the material inlet. The hopper is used for containing chemical raw materials. The hopper has an opening, and a cover body is provided on the opening.

[0014] For example, a chemical raw material conveying device provided by at least one embodiment of the present disclosure further includes: A swing rod is swingably arranged in the middle in the hopper. One end of the swing rod is located in the hopper, and the other end passes through the material inlet and extends into the conveying pipeline. The spiral conveying blade acts on the swing rod, and the spiral conveying blade can drive the swing rod to swing after rotation.

[0015] For example, a chemical raw material conveying device provided by at least one embodiment of the present disclosure is provided with a mounting bracket on the side wall of the conveying pipeline. At least two wheels are rotatably arranged at the bottom of the mounting bracket, and a locking portion is provided on the wheels.

[0016] The beneficial effects of the embodiments of the present disclosure are as follows: In the present disclosure, by providing a shaft coaxial with the conveying pipeline and winding spiral conveying blades on the shaft, when the shaft rotates, the spiral conveying blades rotate accordingly. Using the principle of spiral propulsion, the chemical raw materials located at the material inlet are pushed along the axial direction of the conveying pipeline until the material outlet, realizing the continuous conveying of chemical raw materials from the material inlet to the material outlet.

[0017] Spiral anti-blocking blades with a rotation direction opposite to that of the spiral conveying blades are arranged on the shaft, and a gap is left between the two. The gap is close to the material outlet. When the chemical raw materials approach the closed end of the conveying pipeline due to extrusion near the material outlet during the conveying process (continuous entry into the closed end may cause the material outlet to be blocked), the spiral anti-blocking blades rotate with the shaft, and the chemical raw materials that may cause blockage are pushed to the material outlet along the direction opposite to the conveying direction, avoiding the accumulation of chemical raw materials near the material outlet (especially the closed end of the conveying pipeline), thereby effectively preventing the conveying pipeline from being blocked. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions in the embodiments of the present disclosure, the following will briefly introduce the drawings required for the description of the embodiments of the present disclosure. Obviously, the drawings in the following description are only some exemplary embodiments of the present disclosure. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on the content of the exemplary embodiments of the present disclosure and these drawings.

[0019] Figure 1 is a schematic three-dimensional structure diagram of a chemical raw material conveying device in an embodiment of the present disclosure; Figure 2 is Figure 1 a schematic right view structure diagram of the chemical raw material conveying device in the embodiment of Figure 3 is Figure 2 a schematic cross-sectional structure diagram of A-A in Figure 4 is Figure 3 a schematic enlarged partial structure diagram of B in Figure 5 is Figure 3 a schematic enlarged partial structure diagram of C in Figure 6 is Figure 1Schematic front view structure diagram of the chemical raw material conveying device in the embodiment; Figure 7 is Figure 6 Schematic D-D cross-sectional structure diagram in; Figure 8 is Figure 7 Schematic enlarged partial structure diagram of E in; Figure 9 is Figure 1 Schematic structure diagram of the anti-blocking push rod of the chemical raw material conveying device in the embodiment.

[0020] In the figure: 1 - conveying pipeline, 11 - material inlet, 12 - material outlet, 13 - material output pipe, 2 - shaft body, 21 - eccentric shaft part, 3 - spiral conveying blade, 31 - interval, 4 - spiral anti-blocking blade, 51 - mounting ring, 52 - anti-blocking push rod, 53 - pushing part, 54 - annular guiding surface, 55 - annular pushing surface, 61 - hopper, 62 - cover body, 71 - swing rod, 72 - swing shaft, 81 - mounting frame, 82 - wheel. Detailed implementation manners

[0021] The following further describes the present disclosure in detail in conjunction with the accompanying drawings and embodiments. It can be understood that the specific embodiments described herein are only used to explain the present disclosure, rather than limiting the present disclosure.

[0022] To make the drawings concise, only the parts related to the disclosure are schematically shown in each drawing, and they do not represent their actual structures as products. Additionally, to make the drawings concise and easy to understand, in some drawings, components with the same structure or function are only schematically shown for one of them, or only one of them is marked. In this article, "one" not only means "only this one", but also can mean "more than one" situation, and "several" includes "two" and "more than two".

[0023] In this article, it should be noted that unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, and it can be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present disclosure can be understood according to specific situations.

[0024] In this disclosure, unless otherwise clearly specified and defined, the first feature being "on" or "under" the second feature may include the direct contact between the first and second features, or may include the situation where the first and second features are not in direct contact but in contact through additional features therebetween. Moreover, the first feature being "above", "over" and "on top of" the second feature includes that the first feature is directly above and obliquely above the second feature, or merely indicates that the horizontal height of the first feature is higher than that of the second feature. The first feature being "under", "below" and "beneath" the second feature includes that the first feature is directly below and obliquely below the second feature, or merely indicates that the horizontal height of the first feature is less than that of the second feature.

[0025] In the description of this embodiment, the orientation or positional relationships such as "upper", "lower", "left" and "right" are based on the orientation or positional relationships shown in the drawings, and are only for the convenience of description and simplifying the operations, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation to this disclosure.

[0026] In addition, in the description of this application, the terms "first", "second", etc. are only used for distinguishing descriptions and cannot be understood as indicating or implying relative importance.

[0027] As Figures 1 - 9 shown, it shows a chemical raw material conveying device in an embodiment of this disclosure. By providing a shaft body 2 coaxial with the conveying pipeline 1 and winding spiral conveying blades 3 on the shaft body 2, when the shaft body 2 rotates, the spiral conveying blades 3 rotate accordingly, and the chemical raw materials located at the material inlet 11 are axially pushed along the conveying pipeline 1 by using the spiral propulsion principle until the material outlet 12, realizing the continuous conveying of the chemical raw materials from the material inlet 11 to the material outlet 12.

[0028] A spiral anti-blocking blade 4 with a spiral direction opposite to that of the spiral conveying blade 3 is provided on the shaft body 2, and a gap 31 is left therebetween, and this gap 31 is close to the material outlet 12. When the chemical raw materials are close to the material outlet 12 during the conveying process and enter the closed end of the conveying pipeline 1 due to extrusion (continuous entry into the closed end may cause the material outlet 12 to be blocked), the spiral anti-blocking blade 4 rotates with the shaft body, and pushes the chemical raw materials that may cause blockage in the direction opposite to the conveying direction to the material outlet 12, avoiding the accumulation of the chemical raw materials near the material outlet 12 (especially the closed end of the conveying pipeline 1), thereby effectively preventing the conveying pipeline from being blocked.

[0029] In some examples, as Figure 3As shown, the pitch of the spiral conveying blade 3 first increases and then decreases along the conveying direction of the chemical raw materials. In the front section, the pitch is smaller, which can more powerfully complete the conveying of the chemical raw materials entering through the material inlet 11 (even if there are lumps, it can be easily conveyed). After the conveying in the front section, the chemical raw materials in the middle section are relatively more uniform, so a larger pitch can improve the conveying efficiency. As for the smaller pitch in the rear section, firstly, it can reduce the speed and improve the stability of the chemical raw material conveying. Secondly, it can prevent the chemical raw materials from entering between the closed end of the conveying pipe 1 and the material outlet 12 due to too high a speed, reducing the possibility of blockage caused by the accumulation and caking of the chemical raw materials.

[0030] In some examples, for example, as Figure 3 shown, the pitch of the spiral anti-blocking blade 4 gradually increases from one end close to the material outlet 12 to the other end. Firstly, the pitch at the end close to the material outlet 12 is smaller, which can effectively block the possible incoming chemical raw materials. Secondly, the pitch at the other end is larger, which can give a larger speed to the chemical raw materials when they may be conveyed here, and discharge the chemical raw materials to the material outlet 12 as much as possible, effectively preventing the chemical raw materials from blocking at the closed end of the conveying pipe 1.

[0031] In some examples, for example, as Figure 3 and Figure 4 shown, there is an anti-blocking push rod 52 reciprocatingly moving along the axial direction of the material output pipe 13. When the chemical raw materials are conveyed to the material outlet 12 and enter the material output pipe 13, the anti-blocking push rod 52 makes a reciprocating movement in the material output pipe 13, and actively pushes the chemical raw materials along the conveying direction of the material output pipe 13, avoiding the accumulation of chemical raw materials in the material output pipe 13 (to deal with situations such as slowed flow rate, caking aggregation, etc. that may cause blockage), thereby preventing the formation of blockage. This active pushing method can effectively handle the materials that may be blocked and ensure the smooth output of the materials.

[0032] In some examples, for example, as Figure 4 and Figure 8 shown, when the shaft body 2 rotates, its eccentric shaft part 21 makes an eccentric movement around the center of the shaft body 2. Since the mounting ring 51 is rotatably sleeved on the eccentric shaft part 21 and one end of the anti-blocking push rod 52 is connected to the mounting ring 51, the anti-blocking push rod 52 will make a reciprocating movement in the material output pipe 13 along with the eccentric movement of the eccentric shaft part 21. This design ingeniously converts the rotational movement of the shaft body 2 into the linear reciprocating movement of the anti-blocking push rod 52, without the need to additionally set up complex driving devices. By using the rotation of the shaft body 2 of the conveying device itself, the work of the anti-blocking push rod 52 can be realized, simplifying the structure and improving the integration and reliability of the device.

[0033] In some examples, for example, as Figure 7 and Figure 9As shown, the anti-blocking push rod 52 has a gradually decreasing diameter from the end near the mounting ring 51 to the free end. When the anti-blocking push rod 52 pushes the chemical raw materials forward, its conical free end (the end with a smaller diameter) first contacts the chemical raw materials. The smaller end area enables the push rod to insert into the chemical raw material pile with less resistance. As the push rod continues to advance, the larger-diameter part gradually participates in the pushing, increasing the contact area and the pushing force with the chemical raw materials, thereby more effectively pushing the chemical raw materials along the conveying direction of the material output pipe 13 and preventing the chemical raw materials from accumulating and blocking near the material outlet.

[0034] When the anti-blocking push rod 52 returns after a pushing operation, the conical design causes the wrapping force of the chemical raw materials on the push rod to gradually decrease as the push rod is pulled out. Since the diameter of the push rod gradually decreases, the contact area between the chemical raw materials and the push rod gradually decreases during the pulling-out process, and the friction force also decreases accordingly. This enables the anti-blocking push rod 52 to be more easily pulled out from the materials, preparing for the next pushing operation and ensuring the smooth reciprocating movement of the anti-blocking push rod 52.

[0035] In some examples, for instance, as Figure 9 shown, the annular pushing surface 55 is perpendicular to the axial direction of the anti-blocking push rod 52. After the chemical raw materials are guided and concentrated by the annular guiding surface 54 (the annular guiding surface 54 is inclined, that is, at a certain angle with the central axis of the anti-blocking push rod 52, and this angle is smaller than the annular pushing surface 55), the annular pushing surface 55 can provide a larger effective pushing area, enhancing the pushing force on the materials and ensuring that the materials can move more smoothly along the conveying direction of the material output pipe 13, effectively preventing the materials from accumulating and blocking near the material outlet.

[0036] When the shaft body 2 drives the eccentric shaft part 21 to move, and further causes the anti-blocking push rod 52 to reciprocate within the material output pipe 13, the pushing part 53 works accordingly. During the process of the anti-blocking push rod 52 pushing the materials forward, the annular guiding surface 54 first contacts the materials and guides the chemical raw materials towards the annular pushing surface 55. For example, when local accumulation of chemical raw materials occurs within the material output pipe 13, the inclined surface of the annular guiding surface 54 causes the materials to slide along the guiding surface and concentrate near the annular pushing surface 55. Then, the annular pushing surface 55 uses its larger area and pushing angle to powerfully push the concentrated chemical raw materials along the conveying direction, preventing the chemical raw materials from blocking near the material outlet 12.

[0037] In some examples, for instance, as Figure 1As shown, the hopper 61 is arranged at the material inlet 11. The hopper 61 is used to hold chemical raw materials. The hopper 61 has an opening, and there is a cover 62 on the opening. Before the raw materials are put in, the operator opens the cover 62 and pours chemical raw materials such as sucrose into the hopper 61. Due to the inverted conical design of the hopper 61, the raw materials can slide down smoothly and concentrate near the bottom outlet. When the conveying device is started, the spiral conveying blade 3 begins to rotate. Under the combined action of its suction force and the self-gravity of the raw materials, the raw materials enter the material inlet 11 from the bottom outlet of the hopper and are then conveyed into the conveying pipeline 1. When the raw materials are not being put in, the operator closes the cover 62 to prevent external dust, moisture, etc. from entering the hopper and protect the quality of the raw materials.

[0038] In some examples, for example, as Figure 3 and Figure 5 shown, the swing rod 71 is swingably arranged in the hopper 61 through a swing shaft 72. During the rotation of the spiral conveying blade 3, its spiral structure interacts with one end of the swing rod 71 extending into the conveying pipeline 1. Due to the rotational movement of the spiral conveying blade 3, a periodically changing force will be generated on the swing rod 71, thereby driving the swing rod 71 to swing with its middle part (swing shaft 72) as the fulcrum.

[0039] The swing of the swing rod 71 in the hopper 61 can break the piled-up or bridging state that the chemical raw materials may form. When the swing rod 71 swings, its end located in the hopper 61 will push the surrounding raw materials, changing the distribution state of the chemical raw materials, making the chemical raw materials flow more evenly towards the bottom of the hopper 61, and then smoothly entering the material inlet 11, ensuring the continuity and stability of the conveying.

[0040] In some examples, for example, as Figure 1 shown, the combination of the mounting frame 81 and the wheels 82 endows the conveying device with the ability to move. By the rolling of the wheels 82, the conveying device can be easily moved within the production site, facilitating its arrangement at different raw material storage areas, beside reaction kettles, etc. to meet the requirements of different production processes and layout.

[0041] The locking part on the wheels 82 can fix the wheels after the conveying device reaches the designated position, preventing it from moving accidentally. This ensures the stability of the conveying device during the working process, avoids affecting the conveying of chemical raw materials due to the shaking of the device, and ensures the accuracy and reliability of the conveying process.

[0042] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present disclosure and not to limit them. Although the present disclosure has been described in detail with reference to the preferred embodiments, those of ordinary skill in the art should understand that the technical solutions of the present disclosure can be modified or equivalently replaced without departing from the spirit and scope of the technical solutions of the present disclosure, and they should all be covered within the scope of the claims of the present disclosure.

Claims

1. A chemical raw material conveying device, characterized in that, Comprising: A conveying pipeline (1) for conveying chemical raw materials. At both ends of the side wall of the conveying pipeline (1) close to its two ends, there are respectively a material inlet (11) and a material outlet (12), and both ends of the conveying pipeline (1) are closed ends; A shaft body (2) rotatably arranged inside the conveying pipeline (1), and the shaft body (2) is coaxial with the conveying pipeline (1); A spiral conveying blade (3) wound around the shaft body (2), and the spiral conveying blade (3) is used to convey chemical raw materials from the material inlet (11) to the material outlet (12); A spiral anti-blocking blade (4) wound around the shaft body (2). The spiral anti-blocking blade (4) is located on one side of the spiral conveying blade (3). The spiral direction of the spiral anti-blocking blade (4) is opposite to that of the spiral conveying blade (3). There is a gap (31) between the spiral anti-blocking blade (4) and the spiral conveying blade (3). The gap (31) is located beside the material outlet (12). The pitch of the spiral anti-blocking blade (4) gradually increases from one end close to the gap (31) to the other end; At the material outlet (12), there is a material output pipe (13). A anti-blocking push rod (52) reciprocates inside the material output pipe (13), and the anti-blocking push rod (52) is used to push chemical raw materials along the conveying direction of the material output pipe (13).

2. The chemical raw material conveying device according to claim 1, characterized in that, The spiral conveying blade (3) is divided into a front section, a middle section and a rear section along its conveying direction. The pitch of the spiral conveying blade (3) gradually increases from the front section to the middle section and gradually decreases from the middle section to the rear section.

3. The chemical raw material conveying device according to claim 1, characterized in that, The shaft body (2) has an eccentric shaft part (21). The eccentric shaft part (21) is located at the gap (31). The eccentric shaft part (21) of the shaft body (2) is eccentrically arranged relative to other parts. An installation ring (51) is rotatably sleeved on the eccentric shaft part (21) of the shaft body (2). One end of the anti-blocking push rod (52) passes through the material outlet (12) and is connected to the installation ring (51), and the other end is a free end.

4. The chemical raw material conveying device according to claim 1 or 3, characterized in that, The anti-blocking push rod (52) is conical, and the diameter of the free end of the anti-blocking push rod (52) is smaller than that of the other end.

5. The chemical raw material conveying device according to claim 4, characterized in that, On the side wall of the anti-blocking push rod (52), there are a number of pushing parts (53). The number of the pushing parts (53) is distributed along the axial direction of the anti-blocking push rod (52). The pushing part (53) has an annular guiding surface (54) and an annular pushing surface (55), and the annular guiding surface (54) is located above the annular pushing surface (55).

6. A chemical raw material conveying device according to claim 1, characterized in that, Also comprising: A hopper (61) arranged at the material inlet (11). The hopper (61) is used to hold chemical raw materials. The hopper (61) has an opening, and a cover body (62) is arranged on the opening.

7. The chemical raw material conveying device according to claim 6, wherein, Also comprising: The swing rod (71) is swingably arranged in the middle in the hopper (61). One end of the swing rod (71) is located in the hopper (61), and the other end extends into the conveying pipeline (1) through the material inlet (11). The spiral conveying blade (3) acts on the swing rod (71), and the spiral conveying blade (3) can drive the swing rod (71) to swing after rotation.

8. The chemical raw material conveying device according to claim 1, wherein An installation frame (81) is arranged on the side wall of the conveying pipeline (1), and at least two wheels (82) are rotatably arranged at the bottom of the installation frame (81), and the wheels (82) are provided with locking parts.

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