Static electricity eliminating, atomizing and humidifying device of PVC powder conveying system

Abstract

The utility model relates to the technical field of chemical production, in particular to a static electricity eliminating, atomizing and humidifying device of a PVC (polyvinyl chloride) powder conveying system, which aims to solve the problem that resin fluidity becomes poor due to the fact that moisture of PVC resin particles is reduced and static electricity is increased due to friction, blowing loss and the like in the PVC powder conveying process at present. According to the device, separation of steam and condensate drops is effectively guaranteed through the water-steam separator capable of achieving automatic buffering and gravity separation, the partition plate and the pore plate liquid remover, the drain valve is arranged at the bottom of the water-steam separator, when condensate water in the water-steam separator reaches a certain liquid level, automatic drainage is achieved, and controllable drainage is achieved; a large amount of condensate water is prevented from entering the pneumatic conveying system to influence the resin quality, the spiral steam spray head utilizes saturated steam to increase the humidity of airflow of the pneumatic conveying system, static electricity and resin moisture loss in the resin conveying process are effectively reduced, and therefore the quality of PVC products is guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of chemical production, in particular to a static elimination atomization and humidification device for a PVC powder conveying system. Background Art

[0002] The conveying process of PVC powder is that the PVC powder from the drying system first enters the buffer hopper, then enters the product vibrating screen for screening through the buffer hopper and the rotary discharge valve. Qualified PVC powder is conveyed to the silo by air cooled by the air cooler and filtered by the air filter. During the conveying process of the air conveying system, friction and wind loss can easily cause the moisture content of PVC resin particles to decrease and static electricity to increase, resulting in poor resin fluidity. With the release of PVC production capacity in recent years, downstream customers have further increased their requirements for resin quality. In order to better meet the requirements of downstream customers for product fluidity, it is urgent to solve the resin moisture problem. Therefore, further improving the problem of increased static electricity and poor fluidity caused by resin moisture loss during air conveying is of great significance to ensuring the smooth production and operation of polyvinyl chloride. Utility Model Content

[0003] The utility model provides a static elimination atomization and humidification device for a PVC powder conveying system, so as to solve the problems existing in the above background.

[0004] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0005] A static elimination atomizing and humidifying device for a PVC powder conveying system comprises an upper cylinder, a lower cylinder is provided at the bottom of the upper cylinder, a partition is vertically provided through the upper and lower cylinders, a steam outlet cavity is provided on one side of the partition, a steam inlet cavity is provided on the other side of the partition, a orifice plate deliquever is horizontally provided in the steam inlet cavity, and a drain pipe is also connected to the bottom of the lower cylinder.

[0006] Furthermore, the outer wall of the upper cylinder near the steam inlet cavity is connected with a steam inlet pipe, and the outer wall of the upper cylinder near the steam outlet cavity is connected with multiple steam outlet pipes, and the ends of the steam outlet pipes are all provided with spiral nozzles.

[0007] Furthermore, a drain valve is provided on the drain pipe.

[0008] Furthermore, a support rod is provided at the bottom of the lower cylinder.

[0009] The utility model has the following beneficial effects:

[0010] The utility model provides a static elimination atomizing humidifying device for a PVC powder conveying system. The device is equipped with a partition and a perforated plate de-liquidator through a water vapor separator with automatic buffering and gravity separation, thereby effectively ensuring the separation of steam and condensed liquid droplets. A drain valve is provided at the bottom of the water vapor separator. When the condensed water in the water vapor separator reaches a certain liquid level, the water is automatically drained, thereby achieving controllable drainage and preventing a large amount of condensed water from entering the air conveying system and affecting the quality of the resin. The spiral steam nozzle uses saturated steam to increase the humidity of the air flow in the air conveying system, thereby effectively reducing static electricity and resin moisture loss during the resin conveying process, thereby ensuring the quality of the PVC product and solving the problem that, during the current PVC powder conveying process, the moisture content of PVC resin particles is reduced and static electricity is increased due to friction and wind blowing loss, resulting in poor resin fluidity.

[0011] In the utility model, when part of condensed water is entrained in the saturated steam transported through the long conveying pipeline and enters the interior of the cylinder through the steam inlet pipe, the condensed water falls to the bottom of the cylinder under the action of gravity and is discharged through the drain valve through the cold and hot water conveying pipelines. The saturated steam collides and buffers under the action of the partition. The steam part that collides with the partition condenses and falls to the bottom. Part of the steam enters the steam outlet side from the upper part of the steam inlet side through the orifice plate deliquoring device. When the steam passes through the orifice plate deliquoring device, the entrained droplets are separated and fall off by the orifice plate deliquoring device. After passing the steam inlet side, they are directly transported to the steam outlet pipe and then evenly dispersed in the wind-sent air through the spiral nozzle. This process not only removes the condensed water in the saturated steam pipeline transported through the long pipeline, but also evenly transports the saturated steam without condensed water to the wind-sent pipe, thereby ensuring the humidity of the air in the wind-sent pipe and solving the problem of high static electricity and poor fluidity of the finished product caused by the loss of water in the latter stage of transportation of PVC powder. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a schematic diagram of the overall structure of the utility model.

[0013] Figure 2 This is a schematic diagram of the internal structure of the upper cylinder of the utility model.

[0014] Figure 3 It is a top view schematic diagram of the overall structure of the utility model.

[0015] The meanings of the reference numerals are as follows:

[0016] 1. Upper cylinder; 2. Lower cylinder; 3. Drain pipe; 4. Drain valve; 5. Support rod; 6. Orifice plate deliquever; 7. Steam outlet pipe; 8. Spiral nozzle; 9. Steam inlet pipe; 10. Steam outlet chamber; 11. Partition; 12. Steam inlet chamber. DETAILED DESCRIPTION

[0017] The present invention will be further described below with reference to the accompanying drawings and specific embodiments.

[0018] like Figure 1-3 As shown, a static elimination atomization and humidification device for a PVC powder conveying system includes an upper cylinder 1, a lower cylinder 2 is provided at the bottom of the upper cylinder 1, a partition 11 is vertically provided through the upper cylinder 1 and the lower cylinder 2, a steam outlet chamber 10 is provided on one side of the partition 11, a steam inlet chamber 12 is provided on the other side of the partition 11, a orifice plate deliquent device 6 is horizontally provided in the steam inlet chamber 12, and a drain pipe 3 is also connected to the bottom of the lower cylinder 2.

[0019] The outer wall of the upper cylinder 1 near the steam inlet cavity 12 is connected with a steam inlet pipe 9, and the outer wall of the upper cylinder 1 near the steam outlet cavity 10 is connected with a group of steam outlet pipes 7, and the ends of the steam outlet pipes 7 are provided with spiral nozzles 8.

[0020] A drain valve 4 is provided on the drain pipe 3 .

[0021] A support rod 5 is further provided at the bottom of the lower cylinder 2 .

[0022] The upper cylinder 1 is located at the upper part of the device, mainly to support the internal structure and seal the steam; the lower cylinder 2 is connected to the upper cylinder 1, mainly to support the internal structure and seal the steam; the drain pipe 3 is located at the bottom of the device, mainly used to transport the liquid after the steam condenses; the drain valve 4 is located at the end of the drain pipe 3, mainly used to discharge the condensed water and impurities in the pipeline; the orifice plate deliqueverer 6 is located in the steam inlet chamber 12, and on the upper part of the steam inlet pipe 9, mainly to separate the droplets entrained in the steam; the steam outlet pipe 7 is located on the side of the steam outlet chamber 10, and is connected to the steam outlet chamber 10, mainly used to transport steam; the spiral nozzle 8 is located at the end of the steam outlet pipe 7, and is installed inside the air delivery pipe when in use, mainly to make the steam evenly dispersed in the air delivery air when the saturated steam is transported to the air delivery pipe; the partition 11 separates the lower cylinder 2 and the upper cylinder 1 in the middle, mainly to buffer the steam transported from the steam inlet pipe 9.

[0023] In specific application of the present invention, when the saturated steam transported through the long conveying pipeline contains part of condensed water, and enters the interior of the upper cylinder 1 and the lower cylinder 2 through the steam inlet pipe 9, the condensed water falls to the bottom of the lower cylinder 2 under the action of gravity, and is discharged through the steam trap 4 through the cold and hot water conveying pipeline. The saturated steam is collided and buffered under the action of the partition 11. After colliding with the partition 11, the steam part condenses and falls to the bottom. Part of the steam enters the steam outlet chamber 10 from the upper part of the steam inlet chamber 12 through the orifice plate deliquever 6. When the steam passes through the orifice plate deliquever 6, the condensed water The liquid droplets are isolated and dropped off at the orifice plate deliquidator 6, and are directly transported to the steam outlet pipe 7 after passing through the steam inlet chamber 12, and then evenly dispersed in the wind-delivered air through the spiral nozzle 8. This process not only removes the condensed water in the saturated steam pipeline transported through the long pipeline, but also evenly transports the saturated steam without condensed water to the wind-delivery pipeline, ensuring the humidity of the air in the wind-delivery pipeline, and solving the problem of increased static electricity and poor fluidity of the finished product caused by the loss of water in the latter stage of PVC powder transportation. Therefore, the device has good practicality.

Claims

1. A static elimination atomization and humidification device for a PVC powder conveying system, characterized by: The invention comprises an upper cylinder (1), a lower cylinder (2) is provided at the bottom of the upper cylinder (1), a partition (11) is vertically provided in the upper cylinder (1) and the lower cylinder (2), a steam outlet cavity (10) is provided on one side of the partition (11), a steam inlet cavity (12) is provided on the other side of the partition (11), a orifice plate deliquent device (6) is horizontally provided in the steam inlet cavity (12), and a drain pipe (3) is also connected to the bottom of the lower cylinder (2).

2. The static elimination atomization and humidification device for a PVC powder conveying system according to claim 1 is characterized by: The outer wall of the upper cylinder (1) near the steam inlet chamber (12) is connected to a steam inlet pipe (9), and the outer wall of the upper cylinder (1) near the steam outlet chamber (10) is connected to a plurality of steam outlet pipes (7), and the ends of the steam outlet pipes (7) are all provided with spiral nozzles (8).

3. The static elimination atomization and humidification device for a PVC powder conveying system according to claim 1 is characterized by: The drain pipe (3) is provided with a drain valve (4).

4. The static elimination atomization and humidification device for a PVC powder conveying system according to claim 1 is characterized by: A support rod (5) is also provided at the bottom of the lower cylinder (2).

Images