Full-automatic fine powder removal device for polypropylene powder

Abstract

The utility model belongs to the technical field of chemical separation, and particularly relates to a full-automatic polypropylene powder fine powder removal device which comprises a dust removal fan and a fine powder removal device body, and an air outlet of the dust removal fan is connected with the fine powder removal device body through a pipeline. The fine powder removing device body comprises a shell, a bag filter and a cooler, the cooler is arranged above the shell, an air inlet of the cooler is communicated with the shell, the bag filter is arranged in the shell, a fine powder collecting tank is arranged at the bottom of the shell, and a fine powder discharging port is formed in the bottom of the fine powder collecting tank. The device can automatically collect polypropylene fine powder and improve the quality of polypropylene powder products.

Description

TECHNICAL FIELD

[0001] The utility model belongs to chemical separation technical field, concretely relates to a full -automatic formula polypropylene powder fine powder removal device. BACKGROUND

[0002] Polypropylene is widely used in fiber products, medical devices, food packaging, vehicle parts, chemical equipment and other fields as a main chemical product. However, fine powder often appears in the SPG polypropylene production process, not only causes damage to the equipment, resulting in dust, bag explosion, interfering with the normal operation of the polypropylene device, and being difficult to clean and maintain, but also leading to the decline of product quality, and the packaging line workers are exposed to the dust environment for a long time, which is easy to cause harm to the body. Therefore, the fine powder problem produced by the SPG process for producing polypropylene is concerned by the practitioners, and how to effectively control the fine powder produced in continuous production becomes a top priority.

[0003] At present, in the SPG polypropylene production process, fine powder removal is generally carried out in the reaction polymerization unit and the drying and gas-solid separation unit, although the effect is remarkable, but there are still some fine powder and superfine powder in the polypropylene powder entering the silo. UTILITY MODEL CONTENT

[0004] The utility model aims at solving the problem that there are still some fine powder and superfine powder in the polypropylene powder entering the silo in the background art, and proposes a new full-automatic polypropylene powder fine powder removal device, which can collect and recycle the fine powder in the polypropylene powder.

[0005] In order to achieve the above-mentioned purpose, the technical scheme adopted is a full-automatic polypropylene powder fine powder removal device, which comprises a dust removal fan and a fine powder removal device body, and the air outlet of the dust removal fan is connected with the fine powder removal device body through a pipeline.

[0006] The fine powder removal device body comprises a shell, a bag filter and a cooler, the cooler is arranged above the shell, the air inlet of the cooler is communicated with the shell, the bag filter is arranged in the shell, the shell bottom is provided with a fine powder collecting groove, and the fine powder collecting groove bottom is provided with a fine powder discharge port.

[0007] In the above technical scheme, the dust removal fan can blow the polypropylene fine powder in the polypropylene powder bin into the fine powder removal device body, the polypropylene fine powder is intercepted to the outer surface of the filter bag of the bag filter, falls to the fine powder collecting groove for recycling treatment by gravity, and the gas can be input into the polypropylene powder bin for recycling after being cooled by the cooler.

[0008] Further, the full-automatic polypropylene powder fine powder removing device further comprises a filter, and the filter is connected with the air inlet of the dust removal fan through a pipeline.

[0009] In the technical scheme, the polypropylene coarse powder in the polypropylene powder bin is gathered at the lower part due to gravity, and the polypropylene fine powder is suspended above the polypropylene coarse powder to form dust, and the filter is arranged before the dust removal fan draws the dust into the fine powder removing device body to filter the polypropylene coarse powder, so that a small amount of polypropylene coarse powder is prevented from mixing with the fine powder.

[0010] Further, the control valve is arranged at the fine powder discharge port.

[0011] Further, the tuning fork switch is arranged in the fine powder collecting groove, and the tuning fork switch is electrically connected with the control valve and the dust removal fan.

[0012] In the technical scheme, when the polypropylene fine powder in the fine powder collecting groove reaches a certain height, the tuning fork switch automatically controls the dust removal fan to be closed, and the control valve is opened, so that the polypropylene fine powder is automatically discharged into the wrapping paper to be automatically wrapped and utilized.

[0013] Further, the pneumatic plug valve is arranged on the shell.

[0014] Further, the full-automatic polypropylene powder fine powder removing device further comprises a pulse control instrument, and the pulse valve is arranged on the bag filter, and the pulse control instrument is electrically connected with the pulse valve.

[0015] In the technical scheme, part of the polypropylene fine powder is attached to the filter bag of the bag filter, and the polypropylene fine powder can be blown off by setting the pulse width and time of pulse blowing through the pulse control instrument.

[0016] Further, the bag filter keel is made of alloy carbon steel, and the filter bag of the bag filter is made of polyester fiber.

[0017] Further, the air outlet of the cooler is provided with a back blowing pipeline.

[0018] In the technical scheme, the back blowing pipeline leads to the polypropylene powder bin to form a cycle, so that the nitrogen gas carrying the polypropylene fine powder is input into the polypropylene powder bin again to be reused.

[0019] Further, the diameter of the top end of the shell is greater than the diameter of the bottom end.

[0020] In the technical scheme, the shell is conical to facilitate the polypropylene fine powder to fall back and be recycled.

[0021] The polypropylene powder fine powder removing device has the following advantages:

[0022] 1. The polypropylene fine powder is removed in the whole process in the closed nitrogen environment, and no tail gas is discharged, and the nitrogen gas carrying the polypropylene fine powder can be cooled by the cooler and re-enter the polypropylene powder bin for recycling.

[0023] 2. The utility model discloses can automatically control the collection of polypropylene fine powder, through the electric connection of tuning fork switch and control valve, make the quantitative polypropylene fine powder outward discharge and pack, no longer need manual processing, avoid the pollution of fine powder to the environment.

[0024] 2. The utility model discloses can control the fine powder content in finished product polypropylene powder to reduce to 1.2% or less from 1.5%, greatly improve the quality of product. DRAWINGS

[0025] In order to more clearly illustrate the technical scheme in the embodiments of the utility model or prior art, the following will briefly introduce the drawings needed to be used in the embodiment or prior art description, obviously, the drawings in the following description only are the embodiments of the utility model, for the ordinary skilled in the art, under the premise of not paying creative labor, still can obtain other drawings according to the drawings provided.

[0026] Figure 1 It is the structural schematic diagram of the utility model;

[0027] Illustration: 1, dust removal fan, 2, fine powder removal device body, 3, filter, 201, shell, 202, bag filter, 203, cooler, 204, fine powder collection groove, 205, fine powder discharge port, 206, control valve, 207, tuning fork switch, 208, pneumatic plug-in valve, 209, backflushing pipeline. DETAILED DESCRIPTION

[0028] In order to make the personnel in the technical field better understand the utility model scheme, the following will be combined with the drawings in the embodiment of the utility model to the technical scheme in the embodiment of the utility model clear, complete description, obviously, the described embodiment only is the embodiment of a part of the utility model but not all the embodiments, based on the embodiment of the utility model, the ordinary skilled in the art obtains all other embodiments without creative labor, all belong to the protection scope of the utility model.

[0029] In the description of the utility model, it is understood that the orientation or positional relationship indicated by the terms "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like is the orientation or positional relationship shown in the drawings, which is only for the convenience of describing the utility model and simplifying the description, and does not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the utility model.

[0030] As shown in Figure 1 A full-automatic polypropylene powder fine powder removal device, the full-automatic polypropylene powder fine powder removal device is composed of a dust removal fan 1, a fine powder removal device body 2 and a filter 3, wherein the air inlet of the filter is connected with the polypropylene powder bin through a pipeline, the air outlet of the dust removal fan is connected with the air inlet of the dust removal fan through a pipeline, and the air outlet of the dust removal fan is connected with the fine powder removal device body through a pipeline.

[0031] The fine powder removal device body comprises a shell 201, a bag filter 202 and a cooler 203, the cooler is arranged above the shell, the air inlet of the cooler is communicated with the shell, the bag filter is arranged in the shell, a fine powder collecting groove 204 is arranged at the bottom of the shell, and a fine powder discharge port 205 is arranged at the bottom of the fine powder collecting groove.

[0032] In one embodiment, a control valve 206 is arranged at the fine powder discharge port, which is used for controlling the discharge of polypropylene fine powder in the fine powder collecting groove.

[0033] In one embodiment, a tuning fork switch 207 is arranged in the fine powder collecting groove, and the tuning fork switch is electrically connected with the control valve and the dust removal fan, and is used for controlling the opening and closing of the control valve and the dust removal fan.

[0034] In one embodiment, a pneumatic plug valve 208 is arranged on the shell, and the air outlet of the dust removal fan is connected with the shell at the position of the pneumatic plug valve.

[0035] In one embodiment, the full-automatic polypropylene powder fine powder removal device further comprises a pulse control instrument, a pulse valve is arranged on the bag filter, the pulse control instrument is electrically connected with the pulse valve, and is used for periodically blowing off the polypropylene fine powder adhered to the filter bag of the bag filter.

[0036] In one embodiment, the bag filter is made of alloy carbon steel, and the filter bag of the bag filter is made of polyester fiber.

[0037] In one embodiment, a back-blowing pipeline 209 is arranged at the air outlet of the cooler, and the back-blowing pipeline is communicated with the polypropylene powder bin.

[0038] In one embodiment, the housing top end diameter is greater than the bottom end diameter for directing the polypropylene fines to fall into the fines collection tank.

[0039] The working principle and process of the utility model are as follows:

[0040] The dust removal fan is started, the dust removal fan drives the polypropylene fines in the upper layer of the polypropylene powder bin and a small amount of polypropylene coarse powder, when passing through the filter, the polypropylene coarse powder is filtered, the polypropylene fines continues to enter into the fine removal device body shell along with the nitrogen, the polypropylene fines is intercepted by the filter bag of the bag filter, part flows into the fines collection tank under the action of gravity, part adheres to the filter bag, the nitrogen flows upward into the cooler for cooling, and then reenters into the polypropylene powder bin along the back flushing pipeline.

[0041] When the polypropylene fines in the fines collection tank reaches a certain height, the tuning fork switch triggers, the control valve is opened, the dust removal fan is closed, and the polypropylene fines is discharged to the packaging line for packaging and selling.

[0042] The pulse width and interval time of the pulse blowing are set by the pulse control instrument, the polypropylene fines adhered to the filter bag is blown off into the fines collection tank for collection.

[0043] Finally, it should be noted that the present embodiment is only used to illustrate the present utility model and does not limit the scope of the present utility model. In addition, it should be understood that after reading the content taught by the present utility model, those skilled in the art can make various changes or modifications to the present utility model, and these equivalent forms also fall within the scope defined by the appended claims of the present application.

Claims

1. A fully automatic polypropylene powder fine powder removal device, characterized in that: The full-automatic polypropylene powder fine powder removal device comprises a dust removal fan (1) and a fine powder removal device body (2), and the air outlet of the dust removal fan is connected with the fine powder removal device body through a pipeline; The fine powder removal device body comprises a shell (201), a bag filter (202) and a cooler (203), the cooler is arranged above the shell, the air inlet of the cooler is communicated with the shell, the bag filter is arranged in the shell, a fine powder collecting groove (204) is arranged at the bottom of the shell, and a fine powder discharge port (205) is arranged at the bottom of the fine powder collecting groove; The full-automatic polypropylene powder fine powder removal device further comprises a filter (3), the filter is connected with the air inlet of the dust removal fan through a pipeline, a tuning fork switch (207) is arranged in the fine powder collecting groove, the tuning fork switch is electrically connected with a control valve and the dust removal fan, the bag filter is made of alloy carbon steel, the filter bag of the bag filter is made of polyester fiber, and a back-blowing pipeline (209) is arranged at the air outlet of the cooler.

2. The fully automatic polypropylene powder fines removal device according to claim 1, characterized in that: A control valve (206) is arranged at the fine powder discharge port.

3. The fully automatic polypropylene powder fines removal device according to claim 1, characterized in that: A pneumatic plug valve (208) is arranged on the shell.

4. The fully automatic polypropylene powder fines removal device according to claim 1, characterized in that: The full-automatic polypropylene powder fine powder removal device further comprises a pulse control instrument, a pulse valve is arranged on the bag filter, and the pulse control instrument is electrically connected with the pulse valve.

5. The fully automatic polypropylene powder fines removal device according to claim 1, characterized in that: The diameter of the top end of the shell is greater than that of the bottom end.

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