CN219052400U

CN219052400U - PVC powder dust collecting system capable of improving powder conveying capacity

Info

Publication number: CN219052400U
Application number: CN202223247805.5U
Authority: CN
Inventors: 郭亚东; 辛丹; 张有麟; 李学文; 李宏魁; 蒋成琪; 赵乾祖; 肖恭鑫
Original assignee: Jinchuan Group Co Ltd
Current assignee: Jinchuan Group Co Ltd
Priority date: 2022-12-05
Filing date: 2022-12-05
Publication date: 2023-05-23
Anticipated expiration: 2032-12-05

Abstract

The utility model discloses a PVC powder dust collection system capable of improving powder conveying capacity, which comprises a buffer hopper, a packaging bin, a vibrating screen, a cyclone separator, a dust remover, an induced draft fan, a Roots blower and a rotary blanking valve, wherein the buffer hopper is arranged on the packaging bin; the top of the buffer hopper is connected with a vibrating screen, and an outlet at the bottom of the buffer hopper is connected with a conveying pipeline through a rotary blanking valve; the head end of the conveying pipeline is connected with the Roots blower, and the tail end of the conveying pipeline is connected with the packaging bin; the top of the buffer hopper is also provided with a gas phase outlet and a solid phase inlet, the gas phase outlet is connected with the inlet of the cyclone separator through a pipeline, and the solid phase outlet of the cyclone separator is connected with the solid phase inlet of the buffer hopper through a pipeline; the gas phase outlet of the cyclone separator is connected with the inlet of the dust remover, the solid phase outlet of the dust remover is connected with the solid phase inlet of the buffer hopper through a pipeline, and the gas phase outlet of the dust remover is connected with the induced draft fan through a pipeline.

Description

PVC powder dust collecting system capable of improving powder conveying capacity

Technical Field

The utility model belongs to the field of PVC powder dust collection in chemical production, and particularly relates to a PVC powder dust collection system capable of improving powder conveying capacity, which is suitable for conveying PVC resin finished products (powder) to a packaging bin.

Background

In PVC chemical production, along with the lifting of production load, the gas-solid phase density in a conveying pipeline is increased, the conveying resistance is increased, the wind return of a rotary feeder is serious, and the pressure of a buffer hopper is suppressed, so that the phenomena of running, overflowing, dripping and leaking occur. The materials in the buffer hopper of the conveying system are seriously hung and adhered, so that the blanking is unsmooth, the conveying capacity is limited, and the 'intestinal obstruction' phenomenon is serious. The top of the buffer hopper adopts a simple bag dust collector, has large exhaust resistance, does not have a back blowing and powder recovery device, is blocked by a cloth bag, and is obvious in site pollution and material loss. Such problems seriously hinder the load lifting and continuous production, and further cause environmental pollution and material loss.

Disclosure of Invention

The utility model provides a PVC powder dust collection system capable of improving powder conveying capacity, which is characterized in that a set of powder dust collection device is integrated on a buffer hopper of an original drying system, so that exhaust resistance is reduced, a back-blowing powder and automatic knocking powder wall-hanging device is provided, and the powder conveying capacity is improved.

Therefore, the utility model adopts the following technical scheme:

a PVC powder dust collection system capable of improving powder conveying capacity comprises a buffer hopper, a packaging bin, a vibrating screen, a cyclone separator, a dust remover, an induced draft fan, a Roots blower and a rotary blanking valve;

the top of the buffer hopper is connected with a vibrating screen, and an outlet at the bottom of the buffer hopper is connected with a conveying pipeline through a rotary blanking valve; the head end of the conveying pipeline is connected with the Roots blower, and the tail end of the conveying pipeline is connected with the packaging bin;

the top of the buffer hopper is also provided with a gas phase outlet and a solid phase inlet, the gas phase outlet is connected with the inlet of the cyclone separator through a pipeline, and the solid phase outlet of the cyclone separator is connected with the solid phase inlet of the buffer hopper through a pipeline; the gas phase outlet of the cyclone separator is connected with the inlet of the dust remover, the solid phase outlet of the dust remover is connected with the solid phase inlet of the buffer hopper through a pipeline, and the gas phase outlet of the dust remover is connected with the induced draft fan through a pipeline.

Further, a plurality of pneumatic knocking air hammers are arranged around the lower part of the outer wall of the buffer hopper.

Further, an elbow on the conveying pipeline adopts an 8D elbow.

The utility model has the beneficial effects that:

according to the utility model, the cyclone separator and the dust remover are connected to the buffer hopper of the drying system, and then induced by the induced draft fan, so that air pressure is formed in the buffer hopper, the exhaust resistance is reduced, and the powder is prevented from being accumulated and static accumulation. And then, a pneumatic knocking air hammer is added to the side wall of the buffer hopper so as to realize programmed control and automatic timing vibration, solve the problem of intestinal obstruction and prevent powder from being hung on walls and seriously adhering. And finally, all the elbows are replaced by 8D elbows with large curvature on the conveying pipeline, so that the conveying resistance is reduced.

Drawings

FIG. 1 is a schematic diagram of an original PVC dispensing and conveying system;

FIG. 2 is a schematic diagram of the structure of the present utility model;

in the figure: the device comprises a 1-buffer hopper, a 2-packaging bin, a 3-vibrating screen, a 4-cyclone separator, a 5-dust remover, a 6-induced draft fan, a 7-Roots blower, an 8-rotary blanking valve, a 9-pneumatic knocking air hammer and a 10-8D elbow.

Detailed Description

The utility model is further described below with reference to the accompanying drawings:

as shown in figure 1, when the material of a drying system is normally discharged into a buffer hopper 1 through a vibrating screen 3, gas phase is normally induced by a draught fan 6, micro negative pressure is formed in the buffer hopper 1 when the powder is conveyed by a Roots blower 7, the gas phase carries micro solid phase to enter a cyclone separator 4 to separate the gas phase from the solid phase, the separated solid phase originally enters the buffer material to be conveyed, and the clean gas phase enters the atmosphere after the gas phase enters a dust remover 5 to remove dust again. The solid phase enters the conveying pipeline through the rotary blanking valve 8 under the condition of no resistance and is finally conveyed to the packaging bin 2.

When solid phase enters the rotary blanking valve 8 from the buffer hopper 1, in order to prevent the conditions of intestinal obstruction, powder wall hanging and serious bonding, the pneumatic knocking air hammer 9 is controlled by a PLC or a singlechip in a programming way, and the side wall of the buffer hopper 1 is automatically and regularly vibrated; in order to reduce the conveying resistance when conveying the solid phase, all the elbows adopt 8D elbows 10 so as to reduce the pipe resistance caused by the elbows and avoid the insufficient wind pressure at the tail end of conveying.

Claims

1. The PVC powder dust collection system capable of improving the powder conveying capacity is characterized by comprising a buffer hopper (1), a packaging bin (2), a vibrating screen (3), a cyclone separator (4), a dust remover (5), an induced draft fan (6), a Roots blower (7) and a rotary blanking valve (8);

the top of the buffer hopper (1) is connected with a vibrating screen (3), and an outlet at the bottom of the buffer hopper (1) is connected with a conveying pipeline through a rotary blanking valve (8); the head end of the conveying pipeline is connected with a Roots blower (7), and the tail end of the conveying pipeline is connected with a packaging bin (2);

the top of the buffer hopper (1) is also provided with a gas phase outlet and a solid phase inlet, the gas phase outlet is connected with the inlet of the cyclone separator (4) through a pipeline, and the solid phase outlet of the cyclone separator (4) is connected with the solid phase inlet of the buffer hopper (1) through a pipeline; the gas phase outlet of the cyclone separator (4) is connected with the inlet of the dust remover (5), the solid phase outlet of the dust remover (5) is connected with the solid phase inlet of the buffer hopper (1) through a pipeline, and the gas phase outlet of the dust remover (5) is connected with the induced draft fan (6) through a pipeline.

2. PVC powder dust collection system capable of improving powder conveying capacity according to claim 1, wherein a plurality of pneumatic knocking air hammers (9) are arranged around the lower part of the outer wall of the buffer hopper (1).

3. PVC powder dust collection system with improved powder conveying capacity according to claim 1, wherein the elbow on the conveying line is an 8D elbow (10).