Vacuum loading and unloading device suitable for chemical container

Abstract

The utility model discloses a vacuum loading and unloading device suitable for a chemical container, which comprises a vacuum pump used for loading or unloading and a material suction pipeline used for being communicated with a loading container or an unloading container, the two ends of the material suction pipeline are hard pipe sections, the middle of the material suction pipeline is a vacuum hose, and the inlet end of the vacuum pump is provided with a vacuum pump inlet pipe; and the middle material transferring container is used for carrying out graded vacuum filling and vacuum discharging. The material loading and unloading device is suitable for the condition that the space is narrow and has no crane loading and unloading conditions, solves the problem of loading and unloading particle materials, and can be used for loading and unloading materials in a time-saving and labor-saving manner.

Description

TECHNICAL FIELD

[0001] The utility model relates to a device for filling and discharging granular material of chemical container by vacuum suction, belongs to the technical field of chemical material conveying. BACKGROUND

[0002] In the chemical production process, the filling and discharging of granular material such as drying agent, adsorbent and catalyst are often involved. Currently, the common method is to pour the material in the bucket into a large hopper, then use a crane to send it to the top platform of the container, and then use a crane to send the hopper to the container opening for feeding. However, this method is only suitable for devices with crane facilities on the platform. For small chemical devices or containers installed in a frame, there is no crane equipment on the platform due to the limited space. In this case, manual material filling is required. The bucket is first transported to the top platform of the container, and then poured into the container by the operator, which is time-consuming and labor-intensive.

[0003] Generally, a material support plate is provided for the container, and the discharge port is opened above the support plate. The discharge port is horizontal or inclined downward. After the material is used for a period of time, the material layer will sink and become more compact due to the impact of process materials and the containment of impurities. The granular material will not fall naturally when the discharge port is opened, and manual removal is required. For example, if the process material has high impurity content, only a part of the purifying agent or catalyst at the top of the container is contaminated, and part of the old agent needs to be removed and replaced with new agent, which does not require the entire purifying agent or catalyst in the container to be removed. For large containers, the operator can enter the container, but the workload is quite large for manual removal of old agents. For small containers, even if a person can enter the container, the space is limited and the operation is difficult. For some containers, a person cannot enter, making it more difficult to remove the old agent.

[0004] In view of the above problems in filling and discharging granular material, it is necessary to develop a practical and feasible method for filling and discharging granular material that can solve the problems of filling and discharging granular material and save time and labor. SUMMARY

[0005] The technical problem to be solved by the utility model is to fill and discharge granular material of chemical container by vacuum suction.

[0006] To solve the above technical problem, the utility model provides a vacuum filling and discharging device suitable for chemical container, which comprises a vacuum pump for filling or discharging, a suction pipe for communicating with the filling container or discharging container, both ends of the suction pipe being hard pipe sections and the middle being a vacuum hose, and a vacuum pump inlet pipe being arranged at the inlet end of the vacuum pump.

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

[0008] Preferably, the connection between the charging container and the vacuum pump inlet pipe is provided with a nozzle screen.

[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 hose, and the two ends are hard pipe sections, each of which is connected with a flange.

[0011] Preferably, the vacuum charging and discharging device for chemical containers further comprises an intermediate transfer container for transferring materials. When charging, the material bag contains materials to be transferred, the vacuum pump is first connected with the intermediate transfer container, at this time the material bag is connected with the intermediate transfer container through the suction pipeline, then the vacuum pump is connected with the charging container, at this time the intermediate transfer container is connected with the charging container through the suction pipeline; when discharging, the discharging container is connected with the intermediate transfer container through the suction pipeline, and the intermediate transfer container is connected with the vacuum pump inlet pipe. The material bag has a certain volume, which is convenient for pouring small-volume barrel products, and can also be a finished product bag. The vacuum pump has sufficient suction capacity, i.e. exhaust capacity.

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

[0013] More preferably, the connection between the intermediate transfer container and the vacuum pump inlet pipe is provided with a nozzle screen.

[0014] More preferably, the bottom of the intermediate transfer container is provided with a discharge port for discharging.

[0015] Further, the opening of the discharge port is inclined downward.

[0016] The utility model is suitable for the case that the space is narrow and does not have the conditions of loading and discharging by crane, solves the problems of filling and discharging granular materials, and can save time and labor and is practical and feasible. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 The schematic diagram of the vacuum charging device for chemical containers provided for example 1 is shown in the figure;

[0018] Figure 2 The schematic diagram of the vacuum charging device for chemical containers provided for example 2 is shown in the figure, which is used for grading charging;

[0019] Figure 3 The schematic diagram of the vacuum discharging device for chemical containers provided for example 3 is shown in the figure, which is used for discharging. DETAILED DESCRIPTION

[0020] In order to make the utility model more obvious and easy to understand, the preferred embodiment is described in detail below with the accompanying drawings.

[0021] Embodiment 1

[0022] As Figure 1 shown, the vacuum charging device suitable for chemical containers provided by the embodiment comprises a vacuum pump 5 for charging, a suction pipe for connecting the bag 1 with the charging container 4, both ends of the suction pipe are hard pipe sections 2, and the middle part is a vacuum hose 3, and the pipe diameter of the vacuum hose 3 is 50-100mm. The inlet end of the vacuum pump 5 is provided with a vacuum pump inlet pipe 6, and the vacuum pump inlet pipe 6 is communicated with the charging container 4. The middle part of the vacuum pump inlet pipe 6 is a vacuum-resistant hose, and both ends are hard pipe sections, and the end parts of the hard pipe sections are respectively connected with a flange. The top of the charging 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. The connection part of the charging container 4 and the vacuum pump inlet pipe 6 is provided with a pipe mouth wire mesh 7.

[0023] When charging, the bag 1 contains the material to be transferred. The vacuum charging process is as follows:

[0024] The bag needs to have a certain volume for temporarily storing the material to be charged. If it is a small-volume bucket, the material in the bucket needs to be transferred to the bag first. Before charging, the charging container is connected with the vacuum pump inlet through the pipe, and the charging container needs to be designed to be vacuum-resistant. The pipe mouth connected with the charging container is provided with a wire mesh with a mesh size smaller than the particle size of the material, which is used to block the particles from being sucked into the vacuum pump in case of full tank, and to damage the equipment. The suction pipe is connected with the blind flange with a reducing flange at the top of the charging container, and the straight pipe section of the suction pipe inserted into the bag has a length set according to the need. Since absolute vacuum can suck water to a height of 10m, according to the bulk density of the material, it can be estimated that the vacuum can suck it to what height. If the vertical distance between the container to be charged and the ground bag is allowed, the material can be sucked to the height of the container inlet by vacuum once, and the above device can complete the vacuum charging. Before starting the vacuum charging, the amount of material to be filled is calculated according to the volume of the charging container, and poured into the bag, or the position of the material surface to stop charging is determined according to the volume of the bag. The straight pipe at the lower end of the suction pipe is inserted into the bag, and the vacuum pump is started, so that the charging of the material to be filled into the container can be carried out by vacuum suction. After the pre-calculated material is filled, the vacuum pump is stopped, and the charging is completed.

[0025] Embodiment 2

[0026] As Figure 2As shown in this embodiment, a staged vacuum filling device suitable for chemical containers is provided. 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 communicates with 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] like Figure 3 As shown in this embodiment, a vacuum unloading device suitable for chemical containers 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] At the time of unloading, the suction pipe connects the unloading container 11 and the intermediate transfer container 8. The vacuum unloading process is as follows:

[0032] Open the upper flange of the unloading container. If the material surface is caked due to long-term use, the caked material needs to be crushed first. The top of the intermediate transfer container is provided with a flange connected to the inlet pipe of the vacuum pump and a flange connected to the suction pipe. One end of the suction pipe is connected to the intermediate transfer container, and the other end is a hard pipe section, which is convenient to insert into the material surface. The length is prepared according to the needs. The intermediate transfer container needs to be designed to withstand vacuum. The bottom of the intermediate transfer container is provided with a downward inclined unloading port for the material to flow out. After the suction pipe is connected, start the vacuum pump, insert the hard pipe section into the material surface, and start to suck and transfer the material to the intermediate transfer container, as shown in Figure 3 According to the volume of the intermediate transfer container and the size of the unloading container, predict the corresponding unloading container material level drop height for each suction amount to avoid the intermediate transfer container being full. Estimate the amount of waste material that has been sucked into the intermediate transfer container, stop the vacuum pump. Remove the flange connected to the suction pipe and the inlet pipe of the vacuum pump. Move the intermediate transfer container to the waste collection site to discharge the waste, and repeat the above operation until all the planned waste is unloaded.

Claims

1. A vacuum charging and discharging device for a chemical container, characterized in that, The device comprises a vacuum pump (5) for charging or discharging, a suction pipe for communicating with a charging container (4) or a discharging container (11), both ends of the suction pipe being hard pipe sections (2) and the middle being a vacuum hose (3), and the inlet end of the vacuum pump (5) being provided with a vacuum pump inlet pipe (6).

2. A vacuum charging and discharging device for a chemical container according to claim 1, wherein The top of the charging 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 charging and discharging apparatus for a chemical container according to claim 1, wherein The connection between the charging container (4) and the vacuum pump inlet pipe (6) is provided with a pipe mouth wire mesh (7).

4. The vacuum charging and discharging apparatus for a chemical container according to claim 1, wherein The pipe diameter of the vacuum hose (3) is 50-100 mm.

5. The vacuum charging and discharging apparatus for a chemical container according to claim 1, wherein The middle part of the vacuum pump inlet pipe (6) is a vacuum-resistant hose, and both ends are hard pipe sections, each of which is connected to a flange.

6. Vacuum charging and discharging device suitable for chemical vessels according to any of claims 1-5, characterized in that, It also comprises an intermediate transfer container (8) for transferring materials, when charging, the material bag (1) contains materials to be transferred, the vacuum pump (5) first communicates with the intermediate transfer container (8), at this time the material bag (1) communicates with the intermediate transfer container (8) through the suction pipe, then the vacuum pump (5) communicates with the charging container (4) again, at this time the intermediate transfer container (8) communicates with the charging container (4) through the suction pipe; when discharging, the discharging container (11) communicates with the intermediate transfer container (8) through the suction pipe, and the intermediate transfer container (8) communicates with the vacuum pump inlet pipe (6).

7. A vacuum charging and discharging device for chemical vessels according to 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. A vacuum charging and discharging apparatus for a chemical vessel according to claim 6, wherein The connection between the intermediate transfer container (8) and the vacuum pump inlet pipe (6) is provided with a pipe mouth wire mesh (7).

9. The vacuum charging and discharging apparatus for a chemical container according to claim 6, wherein When the intermediate transfer container (8) is used for discharging, the bottom is provided with a discharging port (9).

10. The vacuum charging and discharging device suitable for chemical containers according to claim 9, characterized in that, The opening of the discharging port (9) is arranged obliquely downward.

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