Vacuum charging and discharging device applicable to chemical container

Abstract

A vacuum charging and discharging device applicable to a chemical container. The vacuum charging and discharging device comprises a vacuum pump (5) configured to charge and discharge, and a suction pipe configured to communicate with a charging container (4) or a discharging container (11). Two ends of the suction pipe are rigid pipe sections (2), and a middle section thereof is a vacuum hose (3. A vacuum pump inlet pipe (6) is provided at an inlet end of the vacuum pump. The present invention is applicable to situations where space is confined and overhead cranes are unavailable for material charging and discharging, solves the problems of charging and discharging particulate materials, and can achieve time-saving, labor-saving and feasible charging and discharging.

Description

A vacuum loading and unloading device suitable for chemical containers Technical Field

[0001] This utility model relates to a device for filling and unloading chemical containers with particulate materials using vacuum suction, belonging to the field of chemical material conveying technology. Background Technology

[0002] In chemical production processes, the loading and unloading of particulate materials such as desiccants, adsorbents, and catalysts are frequently involved. Currently, the common practice is to pour the material from the storage bins into a large hopper, then use a crane to transport it to the top platform of the container, and subsequently use an overhead crane to move the hopper to the loading dock for feeding. However, using an overhead crane for loading is only suitable for installations with overhead crane facilities on the platform. For small chemical plants, or containers installed within a frame, due to limited space, there is generally no overhead crane on the platform. In such cases, manual loading is the only option. The storage bins are first transported to the top platform of the container, and then operators pour the material from one bin to another into the container, which is time-consuming and labor-intensive.

[0003] Most containers are equipped with a material support plate, with the discharge port located above it. The discharge port is horizontal or angled downwards. After a period of use, the material layer settles and becomes denser due to the impact of process materials and the incorporation of impurities. When the discharge port is opened, the granular material will not fall naturally and must be manually removed. For example, if the process material has a high impurity content, and only a portion of the purifier or catalyst at the top of the container is contaminated, it may be necessary to remove some of the old agent and replace it with new one, rather than completely removing the purifier or catalyst from the container. For large containers, operators can enter, but manually removing the old agent is a considerable workload. For small containers, even if a person can enter, the limited space makes operation difficult. Some containers are inaccessible to personnel, making the removal of the old agent even more challenging.

[0004] In view of the problems mentioned above in the loading and unloading of granular materials, it is very necessary to develop a loading and unloading method that can solve the problems in loading and unloading granular materials in a time-saving, labor-saving and practical way. Summary of the Invention

[0005] The technical problem to be solved by this utility model is: to use vacuum suction for filling and unloading particulate materials in chemical containers.

[0006] To solve the above-mentioned technical problems, this utility model provides a vacuum loading and unloading device suitable for chemical containers, which includes a vacuum pump for loading or unloading, a suction pipe for communicating with the loading or unloading container, both ends of the suction pipe are rigid pipe sections, the middle is a vacuum hose, and the inlet end of the vacuum pump is provided with a vacuum pump inlet pipe.

[0007] Preferably, the top of the loading container is provided with a blind flange for connecting the suction pipe, and the blind flange is provided with a reducing flange.

[0008] Preferably, a wire mesh is provided at the connection between the loading container and the vacuum pump inlet pipe.

[0009] Preferably, the diameter of the vacuum hose is 50-100mm.

[0010] Preferably, the middle part of the vacuum pump inlet pipe is a vacuum-resistant flexible tube, and the two ends are rigid pipe sections, each end of which is connected to a flange.

[0011] Preferably, the vacuum loading and unloading device for chemical containers further includes an intermediate transfer container for transferring materials. During loading, the material bag contains the material to be transferred. The vacuum pump is first connected to the intermediate transfer container, at which point the material bag is connected to the intermediate transfer container through a suction pipe. Then, the vacuum pump is connected to the loading container, at which point the intermediate transfer container is connected to the loading container through a suction pipe. During unloading, the unloading container is connected to the intermediate transfer container through a suction pipe, and the intermediate transfer container is connected to the vacuum pump inlet pipe. The material bag should have a certain volume to facilitate the pouring of small-volume drummed finished materials; it can also be a finished material bag. The vacuum pump should have sufficient suction capacity, i.e., exhaust volume.

[0012] More preferably, the top of the intermediate transfer container is provided with a blind flange for connecting the suction pipe, and the blind flange is provided with a reducing flange.

[0013] More preferably, a wire mesh is provided at the connection between the intermediate transfer container and the vacuum pump inlet pipe.

[0014] More preferably, when the intermediate transfer container is used for unloading, it is provided with a discharge port at the bottom.

[0015] Furthermore, the opening of the discharge port is angled downwards.

[0016] This utility model is applicable to situations where space is limited and there are no conditions for loading and unloading materials by vehicle. It solves the problem of loading and unloading granular materials and can save time and labor for a practical loading and unloading method. Attached Figure Description

[0017] Figure 1 is a schematic diagram of the vacuum filling device for chemical containers provided in Example 1;

[0018] Figure 2 is a schematic diagram of the vacuum filling device for chemical containers provided in Example 2 for filling materials;

[0019] Figure 3 is a schematic diagram of the vacuum unloading device for chemical containers provided in Example 3 for unloading. Detailed Implementation

[0020] To make this utility model more apparent and understandable, preferred embodiments are described in detail below with reference to the accompanying drawings.

[0021] Example 1

[0022] Figure 1 shows a vacuum filling device for chemical containers provided in this embodiment. It includes a vacuum pump 5 for filling and a suction pipe for connecting a material bag 1 to a filling container 4. The suction pipe has rigid pipe sections 2 at both ends and a vacuum flexible tube 3 in the middle, with a diameter of 50-100mm. The vacuum pump 5 has a vacuum pump inlet pipe 6 at its inlet end, which is connected to the filling container 4. The middle part of the vacuum pump inlet pipe 6 is a vacuum-resistant flexible tube, and both ends are rigid pipe sections, each connected to a flange. The top of the filling container 4 has a blind flange 10 for connecting to the suction pipe, and a reducing flange is provided on the blind flange 10. A wire mesh 7 is provided at the connection between the filling container 4 and the vacuum pump inlet pipe 6.

[0023] During loading, material bag 1 contains material to be transferred. The vacuum loading process is as follows:

[0024] The material bag needs to have a certain volume for temporary storage of the material to be filled. If it is a small-volume drum, the material in the drum must be transferred to the material bag first. Before filling, connect the filling container to the vacuum pump inlet with a pipe. The filling container must be vacuum-resistant. The pipe opening connected to the filling container is equipped with a wire mesh with a mesh size smaller than the particle size of the material. This is to prevent particles from being sucked into the vacuum pump and damaging the equipment if the container is full. The part inserted into the material bag is a rigid pipe section, and the length is set as needed. Since absolute vacuum can suck water up to a height of 10m, the height that vacuum can suck it up to can be estimated based on the material's bulk density. If the vertical distance between the container to be filled and the material bag on the ground allows, a single vacuum can suck the material to the container inlet height, and the above device can be used to complete vacuum filling. Before starting vacuum filling, the amount of material to be filled must be calculated according to the volume of the filling container and poured into the material bag, or the material level must be determined according to the volume of the material bag to stop filling. Insert the straight pipe at the bottom of the suction pipe into the material bag, start the vacuum pump, and the material will be loaded into the container by vacuum suction. Once the pre-calculated material has been loaded, stop the vacuum pump; the loading process is now complete.

[0025] Example 2

[0026] Figure 2 shows a vacuum filling device for chemical containers provided in this embodiment. It includes a vacuum pump 5 for filling, an intermediate transfer container 8 for transferring materials, and a suction pipe connecting the intermediate transfer container 8 to a material bag 1 or a filling container 4. The suction pipe has rigid pipe sections 2 at both ends and a vacuum hose 3 in the middle, with a diameter of 50-100mm. The vacuum pump 5 has a vacuum pump inlet pipe 6 at its inlet end. The middle part of the vacuum pump inlet pipe 6 is a vacuum-resistant hose, and both ends are rigid pipe sections, each connected to a flange. The vacuum pump inlet pipe 6 connects to the filling container 4 or the intermediate transfer container 8. The top of the filling container 4 and the intermediate transfer container 8 is provided with a blind flange 10 for connecting to the suction pipe, and the blind flange 10 has a reducing flange. A wire mesh 7 is provided at the connection between the filling container 4, the intermediate transfer container 8, and the vacuum pump inlet pipe 6.

[0027] During loading, material bag 1 contains material to be transferred. Vacuum pump 5 is first connected to intermediate transfer container 8. At this time, the suction pipe connects material bag 1 to intermediate transfer container 8. Then, vacuum pump 5 is connected to loading container 4. At this time, the suction pipe connects intermediate transfer container 8 to loading container 4. The vacuum loading process is as follows:

[0028] When the inlet height of the loading container is too high, a single vacuum pump cannot draw the material to the inlet. In this case, a staged feeding method is required. An intermediate transfer container is added to replace the loading container. The material is first drawn into the intermediate transfer container. After the intermediate transfer container is filled, the vacuum pump inlet pipe and the suction pipe are connected to the loading container at the higher position. The vacuum pump is then started to use the vacuum to transfer the material in the intermediate transfer container to the loading container at the higher position through the suction pipe, thus completing the vacuum feeding operation.

[0029] Example 3

[0030] Figure 3 shows a vacuum unloading device for chemical containers provided in this embodiment. It includes a vacuum pump 5 for unloading, an intermediate transfer container 8 for transferring materials, and a suction pipe connecting the intermediate transfer container 8 to the unloading container 11. The suction pipe has rigid pipe sections 2 at both ends and a vacuum hose 3 in the middle, with a diameter of 50-100mm. The vacuum pump 5 has a vacuum pump inlet pipe 6 at its inlet end. The middle part of the vacuum pump inlet pipe 6 is a vacuum-resistant hose, and both ends are rigid pipe sections, each connected to a flange. The vacuum pump inlet pipe 6 is connected to the intermediate transfer container 8. The top of the intermediate transfer container 8 has a blind flange 10 for connecting to the suction pipe, and a reducing flange is provided on the blind flange 10. A wire mesh 7 is provided at the connection between the intermediate transfer container 8 and the vacuum pump inlet pipe 6. The bottom of the intermediate transfer container 8 has an unloading port 9, with the opening of the unloading port 9 angled downwards.

[0031] During unloading, the suction pipe connects the unloading container 11 to the intermediate transfer container 8. The vacuum unloading process is as follows:

[0032] Open the top flange of the unloading container. If the material surface has clumped due to long-term use, break up the clumps first. The top of the intermediate transfer container has a flange connecting to the vacuum pump inlet pipe and a flange connecting to the suction pipe. One end of the suction pipe connects to the intermediate transfer container, and the other end is a rigid pipe section for easy insertion into the material surface of the unloading container; the length is prepared as needed. The intermediate transfer container must be designed to withstand vacuum, and the bottom of the intermediate transfer container has a downward-sloping discharge port to facilitate material flow. After the suction pipe is connected, start the vacuum pump and insert the rigid pipe section into the material surface to begin suctioning material into the intermediate transfer container, as shown in Figure 3. Based on the volume of the intermediate transfer container and the size of the unloading container, predict the drop height of the material level in the unloading container corresponding to each suction amount to avoid filling the intermediate transfer container. Once it is estimated that the intermediate transfer container has sucked in a suitable amount of waste, stop the vacuum pump. Disassemble the suction pipe and its flange, transport the intermediate transfer container to the waste collection point to release the waste, and repeat the above operation until all the planned waste is discharged.

Claims

1. A vacuum loading and unloading device suitable for chemical containers, characterized in that, It includes a vacuum pump (5) for loading or unloading, a suction pipe for connecting to a loading container (4) or an unloading container (11), the two ends of the suction pipe are rigid pipe sections (2), the middle is a vacuum hose (3), and the inlet end of the vacuum pump (5) is provided with a vacuum pump inlet pipe (6).

2. The vacuum loading and unloading device for chemical containers as described in claim 1, characterized in that, The top of the loading container (4) is provided with a blind flange (10) for connecting the suction pipe, and the blind flange (10) is provided with a reducing flange.

3. The vacuum loading and unloading device for chemical containers as described in claim 1, characterized in that, The connection between the loading container (4) and the vacuum pump inlet pipe (6) is provided with a pipe opening wire mesh (7).

4. The vacuum loading and unloading device for chemical containers as described in claim 1, characterized in that, The diameter of the vacuum hose (3) is 50-100mm.

5. The vacuum loading and unloading device for chemical containers as described in claim 1, characterized in that, The middle part of the vacuum pump inlet pipe (6) is a vacuum-resistant flexible tube, and the two ends are rigid pipe sections, with a flange connected to each end of the rigid pipe section.

6. The vacuum loading and unloading device for chemical containers as described in any one of claims 1-5, characterized in that, It also includes an intermediate transfer container (8) for transferring materials. When loading, the material bag (1) contains the material to be transferred. The vacuum pump (5) is first connected to the intermediate transfer container (8). At this time, the material bag (1) is connected to the intermediate transfer container (8) through the suction pipe. Then the vacuum pump (5) is connected to the loading container (4). At this time, the intermediate transfer container (8) is connected to the loading container (4) through the suction pipe. When unloading, the unloading container (11) is connected to the intermediate transfer container (8) through the suction pipe. The intermediate transfer container (8) is connected to the vacuum pump inlet pipe (6).

7. The vacuum loading and unloading device for chemical containers as described in claim 6, characterized in that, The top of the intermediate transfer container (8) is provided with a blind flange (10) for connecting the suction pipe, and the blind flange (10) is provided with a reducing flange.

8. The vacuum loading and unloading device for chemical containers as described in claim 6, characterized in that, The intermediate transfer container (8) is provided with a pipe opening wire mesh (7) at the connection between it and the vacuum pump inlet pipe (6).

9. The vacuum loading and unloading device for chemical containers as described in claim 6, characterized in that, When the intermediate transfer container (8) is used for unloading, it is provided with a discharge port (9) at the bottom.

10. The vacuum loading and unloading device for chemical containers as described in claim 9, characterized in that, The opening of the discharge port (9) is set at an angle downward.

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