A coating resin solids powder feeding system

Abstract

The utility model relates to polyester resin production equipment field especially relates to a kind of coating resin solid powder feeding system;Including: feeding hopper, feeding packaging purging pipeline and negative pressure air pipe;Wherein, wind pipe suction port baffle is vertically equipped in feeding hopper;Transition part side wall is equipped with opening, and negative pressure air pipe is communicated with opening;The utility model uses feeding packaging purging pipeline to the feeding packaging bag is purged, not only improve the feeding efficiency can avoid the residual powder in packaging bag too much, and further improve the production efficiency, reduce production cost;The negative pressure air pipe of the utility model can reduce dust overflow in the feeding process, and wind pipe suction port baffle can avoid that powder is sucked away by negative pressure air pipe, and both cooperation improves feeding safety and further reduces powder feeding loss;Inert gas purging pipeline can reduce dust accumulation in pipeline, guarantee the operation of system.

Description

Technical Field

[0001] This utility model relates to the field of polyester resin production equipment, and in particular to a coating resin solid powder feeding system. Background Technology

[0002] The typical polyester resin production process involves adding powder to a powder funnel, which is then transported by gravity to a reaction vessel. After reaction and dilution, the product is finally packaged. Currently, the powder feeding process for polyester resin production has the following problems: During powder collection, excessive powder volume increases the pressure on the downstream dust collection system, creating safety hazards; residue remains in the packaging material at the final stage of powder feeding, leading to significant powder waste and increased production costs; lack of power for powder transport during collection affects the powder formulation ratio of the polyester product, further impacting product quality; and long-term use of powder collection pipes causes dust accumulation on the pipe walls, reducing the duct diameter, affecting powder collection efficiency, increasing dust concentration in the pipes, and potentially posing safety risks. Utility Model Content

[0003] The purpose of this invention is to address the shortcomings of existing technologies by providing a coating resin solid powder feeding system.

[0004] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0005] A coating resin solid powder feeding system is provided, comprising: a feeding funnel, a feeding, packaging, and purging pipeline, and a negative pressure air duct;

[0006] The feeding funnel comprises, from top to bottom, a first annular portion, a transition portion, and a second annular portion; a vertically arranged air duct suction port baffle is provided inside the feeding funnel, the top end of the air duct suction port baffle is fixedly connected to the bottom side wall of the first annular portion, and the air duct suction port baffle forms an angle with the transition portion; the side wall of the transition portion is provided with an opening, and the negative pressure air duct is connected to the opening.

[0007] Preferably, the feeding funnel is open at both ends, a feeding funnel valve is provided at the top of the feeding funnel, and the bottom of the feeding funnel is connected to the feed inlet pipe of the reactor.

[0008] Preferably, the feeding and packaging purging pipeline is provided with a pressure control valve and a pipeline control valve in sequence, and the bottom end of the feeding and packaging purging pipeline extends into the feeding and packaging bag.

[0009] Preferably, the negative pressure duct is equipped with a duct control valve; one end of the negative pressure duct is connected to a negative pressure system.

[0010] More preferably, the negative pressure duct is also provided with an inert gas purging line.

[0011] More preferably, the inert gas purging line is located between the duct control valve and the feeding funnel.

[0012] More preferably, the inert gas purging line is provided with a purging line pressure control valve and a purging line control valve in sequence.

[0013] The present invention adopts the above technical solution and has the following technical effects compared with the prior art:

[0014] This invention employs a feeding and packaging purging pipeline to purge the feeding and packaging bags, which not only improves feeding efficiency but also prevents excessive powder residue inside the bags, thereby increasing production efficiency and reducing production costs. The negative pressure duct of this invention reduces dust spillage during the feeding process, and the baffle at the duct intake prevents the negative pressure duct from sucking away the powder. The combination of these two features enhances feeding safety and further reduces powder loss. The inert gas purging pipeline reduces dust accumulation inside the pipeline, ensuring the smooth operation of the system. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the basic process of the coating resin solid powder feeding system in one embodiment of the present invention.

[0016] The reference numerals in the figure include:

[0017] Feeding funnel 1; air duct suction port baffle 11; feeding funnel valve 12; feeding packaging and purging pipeline 2; pressure control valve 21; pipeline control valve 22; negative pressure air duct 3; air duct control valve 31; feeding packaging bag 4; inert gas purging pipeline 5; purging pipeline pressure control valve 51; purging pipeline control valve 52. Detailed Implementation

[0018] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0019] It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.

[0020] The present invention will be further described below with reference to the accompanying drawings and specific embodiments, but this is not intended to limit the present invention.

[0021] Example

[0022] This embodiment provides a coating resin solid powder feeding system, including: a feeding funnel 1, a feeding packaging and purging pipeline 2, and a negative pressure air duct 3;

[0023] The feeding funnel 1 has openings at both ends, a feeding funnel valve 12 at the top, and its bottom end is connected to the inlet pipe of the reactor. The feeding funnel 1 comprises, from top to bottom, a first annular section, a transition section, and a second annular section. A vertically installed air duct suction port baffle 11 is provided inside the feeding funnel 1. The top end of the air duct suction port baffle 11 is fixedly connected to the bottom side wall of the first annular section, and the air duct suction port baffle 11 forms an angle with the transition section. An opening is provided on the side wall of the transition section, and the negative pressure air duct 3 communicates with the opening.

[0024] The feeding and packaging purging pipeline 2 is equipped with a pressure control valve 21 and a pipeline control valve 22 in sequence, and the bottom end of the feeding and packaging purging pipeline 2 extends into the feeding and packaging bag 4.

[0025] The negative pressure duct 3 is equipped with a duct control valve 31; one end of the negative pressure duct 3 is connected to a negative pressure system; an inert gas purging pipeline 5 is also provided between the duct control valve 31 and the feeding funnel 1, and a purging pipeline pressure control valve 51 and a purging pipeline control valve 52 are sequentially provided on the inert gas purging pipeline 5.

[0026] The principle is as follows:

[0027] During feeding, the operator opens the pipeline control valve 22 and adjusts the pressure control valve 21 to control the feeding speed. The powder in the feeding bag 4 enters the feeding funnel 1 under the action of the feeding bag purging pipeline 2. The negative pressure air duct 3 provides negative pressure to ensure that the dust generated when the powder enters the feeding funnel 1 will not overflow. The setting of the air duct suction port baffle 11 ensures that the negative pressure air duct 3 will not directly suck up the powder, thereby avoiding the negative pressure air duct 3 from sucking in too much powder. During the operation of the system, the operator can periodically open the inert gas purging pipeline to purge the negative pressure air duct 3 to prevent the powder from accumulating in the negative pressure air duct 3.

[0028] In summary, this utility model uses a feeding and packaging purging pipeline to purge the feeding and packaging bags, which not only improves feeding efficiency but also avoids excessive powder residue inside the packaging bags, thereby improving production efficiency and reducing production costs. The negative pressure air duct of this utility model can reduce dust overflow during the feeding process, and the air duct suction port baffle can prevent the negative pressure air duct from sucking away the powder. The combination of the two improves feeding safety and further reduces powder feeding loss. The inert gas purging pipeline can reduce dust accumulation in the pipeline and ensure the operation of the system.

[0029] The above description is only a preferred embodiment of the present utility model and does not limit the implementation method and protection scope of the present utility model. Those skilled in the art should realize that all solutions obtained by equivalent substitutions and obvious changes made based on the description and illustrations of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A coating resin solid powder feeding system, characterized in that, include: Feeding funnel (1), feeding and packaging purging pipeline (2), and negative pressure air duct (3); The feeding funnel (1) comprises, from top to bottom, a first annular portion, a transition portion, and a second annular portion; a vertical air duct suction port baffle (11) is provided inside the feeding funnel (1), the top end of the air duct suction port baffle (11) is fixedly connected to the bottom side wall of the first annular portion, and the air duct suction port baffle (11) forms an angle with the transition portion; the side wall of the transition portion is provided with an opening, and the negative pressure air duct (3) is connected to the opening.

2. The coating resin solid powder feeding system according to claim 1, characterized in that, The feeding funnel (1) is open at both ends, and a feeding funnel valve (12) is provided at the top of the feeding funnel (1). The bottom end of the feeding funnel (1) is connected to the feed inlet pipe of the reactor.

3. The coating resin solid powder feeding system according to claim 1, characterized in that, The feeding and packaging purging pipeline (2) is provided with a pressure control valve (21) and a pipeline control valve (22) in sequence, and the bottom end of the feeding and packaging purging pipeline (2) extends into the feeding and packaging bag (4).

4. The coating resin solid powder feeding system according to claim 1, characterized in that, The negative pressure duct (3) is equipped with a duct control valve (31); one end of the negative pressure duct (3) is connected to a negative pressure system.

5. The coating resin solid powder feeding system according to claim 4, characterized in that, The negative pressure duct (3) is also equipped with an inert gas purging pipeline (5).

6. The coating resin solid powder feeding system according to claim 5, characterized in that, The inert gas purging line (5) is located between the air duct control valve (31) and the feeding funnel (1).

7. The coating resin solid powder feeding system according to claim 5, characterized in that, The inert gas purging line (5) is provided with a purging line pressure control valve (51) and a purging line control valve (52) in sequence.

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