CN204822114U - Inorganic flame retardant powder package system - Google Patents

Abstract

The utility model relates to an inorganic flame retardant powder package system, include: be used for the holding the feed bin of powder, its including locate the bottom the export and, with export and correspond the entry and decompression mouth that sets up, with the feed pipeline of entry linkage for will through the air current the powder is brought into the feed bin, with a decompression mouthful vacuum apparatus who connects, and set up in filter equipment between decompression mouth and the vacuum apparatus, through filter equipment makes the powder is held back, with the packaging hardware of exit linkage is used for the encapsulation of powder becomes the bag, packaging hardware with still be equipped with a feed back pipeline between the feed pipeline, be used for powder and airflow separation among the packaging hardware. The utility model discloses simplified the packing flow, the trouble of not only practiced thrift the workshop appliance cost, the personnel that save maintaining has reduced manual operation's intensity of labour and investment, working costs, still enable to pack the flow and can stablize continuous operation, improved packing efficiency.

Description

A packaging system for inorganic flame retardant powder

technical field

This field relates to feeding or unloading mechanism, especially refers to the improvement of packaging technology for inorganic flame retardant powder or powdery materials.

Background technique

In the prior art, the inorganic flame retardant powder needs to be transported by airflow in the pipeline, so in the packaging stage of the inorganic flame retardant powder, the packaging bag will be very swollen due to the inclusion of a large amount of gas, which will inevitably affect the efficiency of packaging and packaging.

In the prior art, in order to solve the above-mentioned packaging problem, a packaging dust collector (for example, a cloth bag filter) is connected to one side of the packaging device to remove the gas in the packaging bag in time, reduce the air pressure of the packaging bag, and make the inorganic flame retardant The powder is smoothly filled into the bag. However, during the process of pumping out the gas at this stage, the dust collector containing a relatively high concentration of inorganic flame retardant dust is also brought into the bag filter; such a large amount of inorganic flame retardant dust makes The bag filter fills up quickly, making the bag less air permeable and less efficient at extracting the airflow. At this time, people have to periodically stop the packaging process, clean or replace the bag filter, and then restart the packaging work. In this way, it is found that the bag filter not only takes up limited space in the workshop, but also frequently suspends the operation of the packaging system, and requires regular maintenance by staff, which increases production costs; at the same time, it also seriously affects packaging efficiency and delays production; In addition, different Inorganic flame retardant powder products cannot be mixed with bag filters, otherwise the inorganic flame retardant powder on the bag cannot be recycled.

To sum up, people urgently need to improve the existing packaging process.

Utility model content

In order to solve the above problems, the utility model provides an inorganic flame retardant powder packaging system, including at least

A silo for accommodating the inorganic flame retardant powder, which includes an outlet at the bottom and an inlet and a decompression port corresponding to the outlet;

A feed pipeline connected to the inlet, used to bring the inorganic flame retardant powder into the silo through air flow;

A vacuum device connected to the decompression port, and a filter device arranged between the decompression port and the vacuum device; the inorganic flame retardant powder is intercepted by the filter device;

The packaging device connected to the outlet is used for packaging the inorganic flame retardant powder into bags; there is also a return pipeline between the packaging device and the feeding pipeline for the packaging The inorganic flame retardant powder in the device is separated from the airflow.

Further, the packaging device includes:

A material receiving port connected to the outlet, and a packaging bag corresponding to the material receiving port;

A buffer cavity is also provided between the material receiving port and the packaging bag, and the return pipeline communicates with the buffer cavity.

Further, the vacuum degree of the silo is 30-50KPa.

Further, a rotary feeder is installed at the outlet.

Further, the filter device is a bag filter. Further, the air velocity of the feed pipeline is 20-30m/s.

Further, the inner diameter of the return pipeline is 50-70 mm, and the inner diameter of the feed pipeline is 70-100 mm.

Beneficial effect:

The utility model utilizes the negative pressure in the feeding pipeline and replaces the existing packaging dust collector with the return pipeline, which solves the problem that the inorganic flame retardant powder packaging system must be shut down and cleaned regularly before use, resulting in discontinuous production.

After the modification of the dust collection device of the inorganic flame retardant powder packaging machine, the packaging machine packaging has the following improvements:

1. The vacuum degree in the existing whole packaging process is 3-5KPa. After the improvement, the vacuum degree of the whole packaging process of the utility model can reach 30-50KPa, and the negative pressure is increased by 6-10 times, which naturally absorbs the gas in the packaging bag. It has also increased many times.

2. The packaging process is simplified, which not only saves the cost of workshop equipment, saves the trouble of personnel maintenance, reduces the labor intensity of manual operation, and greatly reduces the investment and operating costs of the inorganic flame retardant powder packaging process; it can also make the packaging The process can run stably and continuously, which greatly improves the packaging efficiency.

3. The improved packaging system has increased the recovery rate of inorganic flame retardant powder by 1%, bringing obvious economic effects to the enterprise.

Description of drawings

Figure 1 is a schematic diagram of the system structure of the inorganic flame retardant powder packaging system of Example 1 of the present invention.

Detailed ways

Embodiments of the utility model will be described in detail below in conjunction with the accompanying drawings.

Example 1

This embodiment provides a vacuum degassing packaging system for inorganic flame retardant powder. Taking its application in the packaging of magnesium hydroxide or aluminum hydroxide or other inorganic flame retardants as an example, its structure is introduced below, as shown in Figure 1 , which includes at least:

The silo 10 for accommodating the inorganic flame retardant powder includes an outlet 11 at the bottom, an inlet 12 and a decompression port 13 corresponding to the outlet. The feeding pipeline 20 is connected with the inlet 12 and is used for bringing the inorganic flame retardant powder into the silo 10 through airflow. Generally, the inner diameter of the feeding pipeline is 70-100m. Preferably, in order to use the magnesium hydroxide flame retardant powder to settle and concentrate in the outlet 11 by its own gravity, the outlet 11 is set in a funnel shape. Preferably, in order to improve the discharge effect, a switch or valve, such as a rotary feeder (not shown in the figure), is installed at the outlet 11 . The inlet 12 and the decompression port 13 are both arranged on the top of the silo 10, so that when the inorganic flame retardant powder enters the silo with the air flow, part of the air flow can be separated from the inorganic flame retardant powder through the decompression port 13.

A vacuum device 30 is connected to the decompression port 13 for generating negative pressure pumping air flow at the decompression port 13 ; a filter device 40 is provided between the decompression port 13 and the vacuum device 30 . In this embodiment, the filter device can be, for example, a bag filter. The vacuum device 30 drives the airflow from the silo 10 to the filter device 40. At this time, the inorganic flame retardant powder mixed in the airflow is trapped in the bag filter. In the middle, the airflow continues to flow through the small holes of the bag, realizing the separation of the inorganic flame retardant powder and the airflow.

A packaging device 50 is connected to the outlet 11 for packaging the inorganic flame retardant powder into bags. A return pipeline 60 is also provided between the packaging device 50 and the feeding pipeline 20 for separating the inorganic flame retardant powder in the packaging device 50 from the air flow. Generally, the inner diameter of the return pipeline is 50-70 mm. Wherein, the packaging device 50 includes: a material receiving port 51, a buffer cavity 52 and a packaging bag 53; the material receiving port 51 is connected to the outlet 11; the packaging bag 53 corresponds to the material receiving port 51; A buffer cavity 52 is also provided between the material opening 51 and the packaging bag 53 , and the return pipeline 60 communicates with the upper part of the buffer cavity 52 . In this way, the feed pipeline 20, the buffer chamber 52 and the return pipeline 60 form a connected air flow circuit, and a negative pressure is naturally formed in the return pipeline 60, so that the air flow direction passes through the upper part of the buffer chamber 52 through the return pipeline. 60. Flow to the feed pipeline 20, so as to achieve the effect of pulling the gas out of the buffer chamber 52.

Next, the workflow of this packaging system is introduced.

First, start the vacuum device 30 to maintain a certain degree of vacuum in the feed bin 10 .

Then, open the valve of the feed pipeline 20 (not shown in the figure), so that the air flow (for example, air, nitrogen) drives the inorganic flame retardant powder to be transported to the silo 10 through the feed pipeline 20 . Generally, the air velocity of the feed pipeline is controlled to be 20-30m/s. When the air flow mixed with inorganic flame retardant powder enters the silo 10 from the inlet 12, the inorganic flame retardant powder settles towards the outlet 11 of the silo 10 by its own gravity, and the air flow part is drawn out of the silo through the decompression port 13 10. A small amount of mixed inorganic flame retardant powder is intercepted at the bag filter and falls into the silo 10. During the whole process, the vacuum device keeps the vacuum degree in the silo at 30-50KPa.

As more and more inorganic flame retardant powders enter the silo 10, the outlet 11 is opened when a certain amount is accumulated (for example, the rotary feeder installed at the outlet 11 is opened), due to the rotation at the outlet 11 The feeder has the function of continuously supplying materials and isolating the air flow, ensuring that the inorganic flame retardant powder can be continuously supplied to the material receiving port 51 of the packaging device 50 without being affected by the negative pressure in the silo 10. The agent powder is instead drawn back into the silo 10. At this moment, the rotary feeder of the outlet 11 blocks the air flow communication with the silo 10, and the packaging device 50 communicates with the feed pipeline 20 through the return pipeline 60, because the air flow in the feed pipeline 20 makes A negative pressure is naturally formed in the return pipeline 60 , and the gas in the return pipeline 60 continuously flows to the supply pipeline 20 . In this way, the airflow in the buffer chamber 52 and the inorganic flame retardant powder mixed therewith are also "extracted", and most of the inorganic flame retardant powder can be smoothly packed into the packaging bag without causing damage to the package. The bag is too bloated. At this time, since the return pipeline 60 is directly connected to the supply pipeline 20, the inorganic flame retardant powder extracted from the buffer chamber 52 no longer needs to be separated from the air flow, and can be directly returned to the supply pipeline 20 and re-entered. The feed bin 10 continues the packaging process.

In this embodiment, the return pipeline is used to replace the existing packaging dust collector, realizing the continuity of the inorganic flame retardant powder packaging process, which not only greatly saves production costs, but also improves the recycling efficiency of the inorganic flame retardant powder. It has increased by 1%, which has brought huge economic effects to the enterprise.

Claims (7)

1. an inorganic combustion inhibitor powder packaging system, is characterized in that, at least comprises

For the feed bin of accommodating described inorganic combustion inhibitor powder, its include the outlet of being located at bottom and, export the corresponding entrance that arranges and pressure-reduction outlet with described;

The supply lines be connected with described entrance, for bringing described inorganic combustion inhibitor powder into described feed bin by air-flow;

The vacuum be connected with described pressure-reduction outlet, and be arranged at the filtering installation between described pressure-reduction outlet and vacuum; By described filtering installation, described inorganic combustion inhibitor powder is retained;

Export with described the packaging system be connected, be packaged into bag for described inorganic combustion inhibitor powder; A return pipeline is also provided with, for the inorganic combustion inhibitor powder in described packaging system and burbling between described packaging system and described supply lines.

2. packaging system according to claim 1, it is characterized in that, described packaging system comprises:

Export receiving of connecting and expect mouth with described and receive the packaging bag of expecting that mouth is corresponding with described;

Described receiving between material mouth and described packaging bag is also provided with a cushion chamber, and described return pipeline is communicated with described cushion chamber.

3. packaging system according to claim 1, it is characterized in that, the degree of vacuum of described feed bin is 30 ~ 50KPa.

4. packaging system according to claim 1, it is characterized in that, described filtering installation is cloth envelop collector.

5. packaging system according to claim 1, it is characterized in that, described exit is also provided with rotary feeder.

6. packaging system according to claim 1, is characterized in that, the air-flow velocity 20 ~ 30m/s of described supply lines.

7. packaging system according to claim 1, it is characterized in that, described return pipeline internal diameter is 50 ~ 70mm, supply lines internal diameter is 70 ~ 100mm.