Cellulose powder conveying mechanism

Abstract

A cellulose powder conveying mechanism comprises a cyclone separator, a bag type dust collector and a negative pressure fan, a feeding port of the cyclone separator is connected with a discharging port of an opener through a feeding pipeline, and a gas phase outlet of the cyclone separator is connected with a feeding port of the bag type dust collector through a pipeline. A discharge port of the cyclone separator supplies materials to the cotton bin through the cyclone feeder and a first pipeline, an exhaust cavity of the bag type dust collector is connected with a negative pressure fan, and the bottom of a dust hopper of the bag type dust collector supplies materials to the cotton bin through the spiral feeder and a second pipeline. The cellulose powder conveying device is simple in structure, convenient to operate and capable of safely conveying cellulose powder generated by the cotton slitter to a cotton bin, and the actual requirements of enterprises are met.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of chemical industry especially relates to a cellulose powder conveying mechanism. BACKGROUND

[0002] Cotton is an important cellulose raw material. At present, the cellulose powder obtained after the cotton raw material is broken by an opener is directly conveyed to a cotton bin by a fan for standby. This conveying mechanism has the following risks: ① the cellulose powder is heated by the friction of the fan impeller, and the degree of polymerization may be further reduced, which is not conducive to the control of product quality; ② if sparks are generated in the opener during the breaking process, or static electricity generates sparks, the sparks may enter the cotton bin, causing the cotton bin to catch fire.

[0003] Therefore, how to design a cellulose powder conveying mechanism with simple structure and safe and reliable is a problem to be solved by the person skilled in the art. SUMMARY

[0004] The utility model aims at the shortage of prior art, provides a cellulose powder conveying mechanism, its simple structure, convenient operation can safely convey the cellulose powder generated by the opener to the cotton bin, satisfies the actual demand of enterprise.

[0005] The technical scheme of the utility model is: a cellulose powder conveying mechanism, including cyclone separator, bag type dust collector, negative pressure fan, the feed inlet of cyclone separator is connected with the discharge port of opener through feed pipe line, the gas phase export of cyclone separator is connected with the feed inlet of bag type dust collector through pipe line, the discharge port of cyclone separator is connected with the cotton bin through cyclone feeder and first pipe line, the exhaust cavity of bag type dust collector is connected with negative pressure fan, the dust hopper bottom of bag type dust collector is connected with the cotton bin through screw feeder and second pipe line.

[0006] The third pipe line is connected on the feed pipe line, the upstream end of third pipe line is connected with nitrogen source, and first valve is arranged to control opening and closing.

[0007] The separation cavity of cyclone separator, the exhaust cavity of bag type dust collector and the dust hopper inner cavity of bag type dust collector are connected with instrument gas source through fourth pipe line, fifth pipe line and sixth pipe line respectively, and second valve, third valve and fourth valve are arranged to control opening and closing respectively.

[0008] The exhaust cavity of bag type dust collector and the dust hopper inner cavity are also connected with low-pressure steam source through seventh pipe line and eighth pipe line respectively, and fifth valve is arranged to control opening and closing.

[0009] The first pipe line extends vertically downward, and first quick-opening sampling hole is arranged, the second pipe line extends vertically downward, and second quick-opening sampling hole is arranged.

[0010] The above technical scheme has the following beneficial effects:

[0011] 1. The cellulose powder conveying mechanism comprises a cyclone separator, a bag-type dust collector and a negative pressure fan. The feed inlet of the cyclone separator is connected with the discharge outlet of the cotton opener through a feed pipeline, that is, the cellulose powder formed by the cotton raw material after the cotton opener can enter the cyclone separator through the feed pipeline, and the cellulose powder is separated in the cyclone separator, and the large-size cellulose powder is intercepted, and the small-size cellulose powder is discharged from the cyclone separator with the airflow. The gas phase outlet of the cyclone separator is connected with the feed inlet of the bag-type dust collector through a pipeline, that is, the airflow containing the small-size cellulose powder separated by the cyclone separator enters the bag-type dust collector, and the small-size cellulose powder is intercepted by the filter bag and deposited on the surface of the filter bag, and the excess small-size cellulose powder is deposited in the ash hopper under the action of gravity. The discharge outlet of the cyclone separator is connected with the cotton bin through a cyclone feeder and a first pipeline, and the large-size cellulose powder intercepted in the cyclone separator does not contact the fan impeller, so the temperature is low, and the quality of the large-size cellulose powder sent to the cotton bin is stable. The exhaust cavity of the bag-type dust collector is connected with the negative pressure fan, and the negative pressure is provided for the bag-type dust collector and the cyclone separator, and the airflow is formed as the driving force for driving the large-size cellulose powder and the small-size cellulose powder. The dust hopper at the bottom of the bag-type dust collector is connected with the cotton bin through a spiral feeder and a second pipeline, and the small-size cellulose powder intercepted in the bag-type dust collector does not contact the fan impeller, so the temperature is low, and the quality of the small-size cellulose powder sent to the cotton bin is stable. In addition, the intercepted large-size cellulose powder and small-size cellulose powder are temporarily stored in the cyclone separator and the bag-type dust collector respectively, which can effectively reduce the risk of sparks entering the cotton bin. The cellulose powder obtained by crushing can be classified, and can be used as raw material alone or mixed as raw material, which effectively meets the actual needs of enterprises.

[0012] 2. A third pipeline is connected with the feed pipeline, the upstream end of the third pipeline is connected with a nitrogen source, and a first valve is arranged to control opening and closing. The sparks generated by the crusher during crushing of the cotton raw material can be extinguished by using nitrogen, and the safety of the cyclone separator, the bag-type dust collector and the cotton bin is ensured.

[0013] 3. The separation cavity of the cyclone separator, the exhaust cavity of the bag-type dust collector and the inner cavity of the dust hopper of the bag-type dust collector are respectively connected with an instrument gas source through a fourth pipeline, a fifth pipeline and a sixth pipeline, and a second valve, a third valve and a fourth valve are respectively arranged to control opening and closing. By opening the corresponding valves, instrument gas can be intermittently provided to the separation cavity of the cyclone separator, the dust removal cavity of the bag-type dust collector and the dust hopper, the residual cellulose powder is blown away, the utilization rate of the raw material is improved, and the risk of explosion in the closed space is avoided.

[0014] 4. The exhaust chamber and dust hopper of the bag filter are also connected to a low-pressure steam source through the seventh and eighth pipes, respectively, and are controlled by a fifth valve. Small-sized cellulose powder may generate a lot of static electricity due to mutual friction during the conveying process. By opening the fifth valve to supplement steam into the bag filter, the humidity is increased, the generated static electricity is released, and the safety risk is effectively reduced.

[0015] The following description, in conjunction with the accompanying drawings and specific embodiments, provides further details. Attached Figure Description

[0016] Figure 1 This is a connection diagram of the present invention.

[0017] In the attached diagram, 1 is a cyclone separator, 2 is a bag filter, 3 is a negative pressure fan, 4 is a feed pipe, 5 is a cyclone feeder, 6 is the first pipe, 8 is a screw feeder, 9 is the second pipe, 10 is the third pipe, 11 is the fourth pipe, 12 is the fifth pipe, 13 is the sixth pipe, 14 is the seventh pipe, 15 is the eighth pipe, 16 is the first quick-opening sampling port, 17 is the second quick-opening sampling port, a is the first valve, b is the second valve, c is the third valve, d is the fourth valve, and e is the fifth valve. Detailed Implementation

[0018] See Figure 1 This is a specific embodiment of a cellulose powder conveying mechanism. The cellulose powder conveying mechanism includes a cyclone separator 1, a bag filter 2, and a negative pressure fan 3. The cyclone separator, bag filter, and negative pressure fan are all conventional equipment in the chemical industry and are installed according to the manufacturer's specifications. The feed inlet of the cyclone separator 1 is connected to the discharge port of the cotton opener through a feed pipe 4. Specifically, a third pipe 10 is connected to the feed pipe 4, and the upstream end of the third pipe 10 is connected to a nitrogen source and is equipped with a first valve a to control its opening and closing. The gas phase outlet of the cyclone separator 1 is connected to the feed inlet of the bag filter 2 through a pipe. The discharge port of the cyclone separator 1 supplies material to the cotton bin through a cyclone feeder 5 and a first pipe 6. Typically, the first pipe 6 extends vertically downwards and is equipped with a first quick-opening sampling hole 16. The exhaust chamber of the bag filter 2 is connected to the negative pressure fan 3. The bottom of the dust hopper of the bag filter 2 is fed to the cotton bin through the screw feeder 8 and the second pipeline 9. In this embodiment, the second pipeline 9 extends vertically downward and is provided with a second quick-opening sampling hole 17. The cotton bin fed by the first pipeline and the cotton bin fed by the second pipeline can be the same or different cotton bins.

[0019] Further, in order to avoid material residues, the separation cavity of the cyclone separator, the exhaust cavity of the bag-type dust collector and the dust hopper inner cavity are respectively connected with the instrument gas source through the fourth pipeline 11, the fifth pipeline 12 and the sixth pipeline 13, and the second valve b, the third valve c and the fourth valve d are respectively arranged to control opening and closing.

[0020] Further, in order to further reduce the safety risk, the exhaust cavity of the bag-type dust collector and the dust hopper inner cavity are respectively connected with the low-pressure steam source through the seventh pipeline 14 and the eighth pipeline 15, and the fifth valve e is arranged to control opening and closing.

[0021] The working principle of the utility model is as follows: the cotton raw material is sent to the cotton opener, is crushed into cellulose powder after the fiber, under the action of negative pressure, these cellulose powder is sent to the cyclone separator through the feed pipeline, the large size cellulose powder is intercepted, and the small size cellulose powder is discharged with airflow and enters the bag-type dust collector and is intercepted by the bag-type dust collector. The large size cellulose powder intercepted in the cyclone separator is discharged through the cyclone feeder and the first pipeline and is sent to the cotton storehouse for storage, and the small size cellulose powder intercepted in the bag-type dust collector is discharged through the spiral feeder and the second pipeline and is sent to the cotton storehouse for storage.

Claims

1. A mechanism for the delivery of a cellulosic powder, characterised in that: The device comprises a cyclone separator (1), a bag filter (2), and a negative pressure fan (3), The feed inlet of the cyclone separator (1) is connected with the discharge outlet of the opener through a feed pipeline (4), the gas phase outlet of the cyclone separator (1) is connected with the feed inlet of the bag filter (2) through a pipeline, and the discharge outlet of the cyclone separator (1) supplies the cotton bin through a cyclone feeder (5) and a first pipeline (6), The exhaust cavity of the bag filter (2) is connected with the negative pressure fan (3), and the bottom of the dust hopper of the bag filter (2) supplies the cotton bin through a spiral feeder (8) and a second pipeline (9).

2. A mechanism for conveying cellulosic powder according to claim 1, characterized in that: A third pipeline (10) is connected with the feed pipeline (4), the upstream end of the third pipeline (10) is connected with a nitrogen source, and a first valve (a) is arranged to control the opening and closing.

3. The mechanism for conveying cellulosic powder according to claim 1, characterized in that: The separation cavity of the cyclone separator, the exhaust cavity of the bag filter, and the inner cavity of the dust hopper of the bag filter are respectively connected with an instrument gas source through a fourth pipeline (11), a fifth pipeline (12), and a sixth pipeline (13), and respectively arranged with a second valve (b), a third valve (c), and a fourth valve (d) to control the opening and closing.

4. The mechanism for conveying cellulosic powder according to claim 1, characterized in that: The exhaust cavity of the bag filter and the inner cavity of the dust hopper are respectively connected with a low-pressure steam source through a seventh pipeline (14) and an eighth pipeline (15), and a fifth valve (e) is arranged to control the opening and closing.

5. The mechanism for conveying cellulosic powder of claim 1, wherein: The first pipeline (6) extends vertically downward, and a first quick-opening sampling hole (16) is arranged, and the second pipeline (9) extends vertically downward, and a second quick-opening sampling hole (17) is arranged.

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