A device for blowing a powder

Abstract

The utility model relates to the technical field of chemical production equipment provides a kind of blowing powder device, including primary air supply pipe, the inner wall of primary air supply pipe is equipped with fan;With the secondary air supply pipe connected to primary air supply pipe, the secondary air supply pipe includes contraction section and air outlet section, the contraction section is butt joint with primary air supply pipe, the air outlet section is fan-shaped, the port of air outlet section is equipped with lip plate, the lip plate is used to butt joint with the feed inlet of reaction equipment;Discharge mechanism, be used for releasing powder above the air outlet section, and its multiple discharge pipes pass through the pipe wall setting of air outlet section.

Description

Technical Field

[0001] This application relates to the field of chemical production equipment technology, specifically to a powder blowing device. Background Technology

[0002] Polypropylene is a common product or raw material in the chemical industry, generally produced by the polymerization of propylene. In its production, powdered raw materials can increase the contact area between the raw materials and other components, thereby improving reaction efficiency. Therefore, some powder is added during the production process. Existing feeding equipment directly uses fans to blow the material into the reaction equipment. Due to the characteristics of wind, the material blown into the reaction equipment only falls into a part of the equipment and cannot be spread throughout the entire reaction equipment, i.e., the diffusion is insufficient. Summary of the Invention

[0003] This utility model provides a powder blowing device that solves the problem of insufficient diffusion of existing powder feeding by optimizing the feeding mechanism.

[0004] This utility model provides a powder blowing device, including a primary air supply pipe, wherein a fan is provided on the inner wall of the primary air supply pipe; A secondary air supply pipe is connected to the primary air supply pipe. The secondary air supply pipe includes a contraction section and an outlet section. The contraction section is connected to the primary air supply pipe. The outlet section is fan-shaped and has a lip plate at its port. The lip plate is used to connect with the feed inlet of the reaction equipment. The discharge mechanism, located above the air outlet section, is used to release powder, and its multiple discharge pipes are arranged through the pipe wall of the air outlet section.

[0005] Optionally, multiple discharge pipes are distributed on an arc surface centered on the geometric center of the air inlet of the air outlet section.

[0006] Optionally, the discharge mechanism further includes a hopper and a conveying pipe, wherein a spiral conveying shaft is provided inside the conveying pipe.

[0007] Optionally, the installation angle between the lip plate and the air outlet section is in the range of 90°-180°.

[0008] Optionally, the outer surface of the secondary air supply duct is provided with a guide rod, and the other end of the guide rod is inserted into the ground.

[0009] Optionally, the primary air supply duct is a circular pipe; the contraction section of the secondary air supply duct is connected to the port of the circular pipe via a flange.

[0010] The beneficial effects of this utility model are as follows: This utility model provides a powder conveying device. A fan in the primary air supply duct blows air into the duct. As the air stream enters the contraction section, its cross-section gradually decreases, causing the air in the middle to diffuse to both sides. Upon reaching the outlet section, the air stream deforms into a fan shape and is discharged towards the air outlet. The air stream carries the powder outward under the guidance of a lip plate. This application causes the air stream to undergo two deformations, making the airflow more uniform. After contacting the powder, the powder is blown into the reaction equipment, improving the diffusion of the powder conveying device and thus enhancing the diffusion and uniformity of the powder feeding within the reactor. Attached Figure Description

[0011] Figure 1 This is a front structural diagram of a powder blowing device provided in this application; Figure 2 This is a schematic diagram showing the material discharge from the discharge pipe and the air stream inside the secondary air supply pipe in the embodiments of this application; Figure 3 This is a schematic diagram of the hopper structure in this embodiment.

[0012] In the picture: 1: Primary air supply duct; 2: Secondary air supply duct; 21: Contraction section; 22: Air outlet section; 3: Lip plate; 4: Discharge mechanism; 41: Discharge pipe; 5: Hopper; 6: Guide rod. Detailed Implementation

[0013] The technical solutions in the embodiments of the application will now be clearly and completely described with reference to the accompanying drawings. Furthermore, the phrases "in one embodiment" or "in one embodiment" appearing throughout this specification do not necessarily refer to the same embodiment. Moreover, these specific features, structures, or characteristics can be combined in any suitable manner in one or more embodiments.

[0014] Polypropylene is a common product or raw material in the chemical industry, generally produced by the polymerization of propylene. In its production, powdered raw materials can increase the contact area between the raw material and other components, thereby improving reaction efficiency. Therefore, the production process involves the addition of some powder. Existing feeding equipment directly uses a fan to blow the material into the reaction equipment. Due to the characteristics of wind, the material blown into the reaction equipment only lands in a small area inside the equipment and cannot be distributed throughout the entire reaction equipment, i.e., insufficient diffusion. In view of this, this utility model provides a powder blowing device, which will be described in detail below with reference to the accompanying drawings.

[0015] like Figure 1 and Figure 2As shown, this utility model provides a powder blowing device, including a primary air supply pipe 1, the inner wall of which is equipped with a fan; a secondary air supply pipe 2 connected to the primary air supply pipe 1, the secondary air supply pipe 2 including a contraction section 21 and an outlet section 22, the contraction section 21 connecting to the primary air supply pipe 1, the outlet section 22 being fan-shaped, the port of the outlet section 22 being equipped with a lip plate 3, the lip plate 3 being used to connect with the feed inlet of the reaction equipment; and a discharge mechanism 4, disposed above the outlet section 22 for releasing powder, and its multiple discharge pipes 41 being arranged through the pipe wall of the outlet section 22.

[0016] As described above, the powder conveying device provided by this utility model has a fan in the primary air supply duct 1 blowing air into the duct. When the air stream enters the contraction section 21, its cross-section gradually decreases, causing the air in the middle to diffuse to both sides. When it reaches the outlet section 22, the air stream deforms into a fan shape and is discharged towards the air outlet. The air stream carries the powder and expands outward under the guidance of the lip plate 3. This application causes the air stream to undergo two deformations, which makes the air force of the air stream uniform. After contacting the powder, the powder is blown into the reaction equipment, which improves the diffusion of the powder conveying device, thereby improving the diffusion degree and uniformity of the powder feeding in the reactor.

[0017] For ease of explanation, in this embodiment, the invisible wind in the primary air supply duct 1 and the secondary air supply duct 2 is represented by "wind strands" to describe the wind forming a tangible wind in different air supply ducts.

[0018] Specifically, such as Figure 1 As shown, a fan is installed on the inner side of the left end of the primary air supply duct 1, providing airflow. The right end of the primary air supply duct 1 connects to the contraction section 21 of the secondary air supply duct 2. The rear end of the contraction section 21 is the outlet section 22, and a lip plate 3 is installed on the right end of the outlet section 22. A portion of the lip plate 3 will be used to connect to the feed inlet of the reaction equipment. The material is fed into the duct from outside the blowing section, because the airflow at this location has formed a fan-shaped structure. The airflow structure within the entire fan-shaped area is stable and uniform, giving the delivered powder diffusion properties.

[0019] In addition, the multiple discharge pipes 41 are distributed on an arc surface centered on the geometric center of the air inlet of the air outlet section 22.

[0020] like Figure 2 As shown, the fan-shaped air outlet section 22 is drawn with the geometric center of the air inlet, i.e., the end that connects with the contraction section 21, as the point where the discharge pipe 41 will be installed. Figure 2 The dotted circle in the middle represents the arc here, because of the wind ( Figure 2(The direction of the air stream is indicated by a dashed arrow) When entering the air outlet section 22, the wind force on both sides is slightly less than that in the middle area. However, the powder drop positions on both sides are set closer to the air inlet, while the powder drop positions in the middle are set relatively far away. This makes the time for the air streams at different positions to come into contact with the powder different. In addition, the difference in the wind force of the air streams makes the wind force at each drop point equal, thereby improving the uniformity of powder feeding.

[0021] In some embodiments, such as Figure 3 As shown, the aforementioned discharge mechanism 4 also includes a hopper 5 and a conveying pipe, with a spiral conveying shaft installed inside the conveying pipe. The spiral shaft pushes the material in the hopper 5 into each discharge pipe 41 in equal amounts and at a uniform speed. To ensure the uniformity of material feeding into each discharge pipe 41, a distribution plate can be installed at the inlet of the discharge pipe 41. Multiple equal-volume material troughs are divided within the distribution plate by baffles, and the material is guided into each discharge pipe 41 through the material troughs.

[0022] Furthermore, in the aforementioned embodiments, the installation angle between the lip plate 3 and the air outlet section 22 ranges from 90° to 180°. This angle range is used to improve the diffusion of the airflow, with 90° and 180° only considered under extreme conditions; normally, the angles fall within this range.

[0023] Additionally, it should be noted that the primary air supply duct 1 in any of the foregoing embodiments is a circular pipe; the contraction section 21 of the secondary air supply duct 2 is connected to the port of the circular pipe via a flange.

[0024] In some embodiments, the outer surface of the secondary air supply pipe 2 is provided with a guide rod 6, the other end of which is inserted into the ground. In this embodiment, considering that static electricity will be generated during the material distribution and conveying process due to repeated friction with the inner wall of the conveying mechanism, the guide rod 6 is used to conduct this static electricity into the ground, which can reduce the electrostatic adsorption effect of the conveying mechanism on the distributed materials and improve the stability of the material conveying mechanism. The conveying mechanism mentioned here includes the entire mechanism composed of the aforementioned primary air supply pipe 1, secondary air supply pipe 2, and lip plate 3.

[0025] Finally, by optimizing the feeding mechanism, this invention solves the problem of insufficient diffusion of existing powder feeding, improves the diffusion of the blowing powder device, and thus improves the diffusion degree and uniformity of powder feeding in the reactor.

[0026] The above embodiments merely illustrate the implementation of this utility model, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.

Claims

1. A powder blowing device, characterized in that, It includes a primary air supply duct (1), and the inner wall of the primary air supply duct (1) is provided with a fan; A secondary air supply pipe (2) is connected to the primary air supply pipe (1). The secondary air supply pipe (2) includes a contraction section (21) and an outlet section (22). The contraction section (21) is connected to the primary air supply pipe (1). The outlet section (22) is fan-shaped. The outlet section (22) is provided with a lip plate (3) at its port. The lip plate (3) is used to connect with the feed inlet of the reaction equipment. The discharge mechanism (4) is located above the air outlet section (22) and is used to release powder, and its multiple discharge pipes (41) are arranged through the pipe wall of the air outlet section (22).

2. The powder blowing device according to claim 1, characterized in that, Multiple discharge pipes (41) are distributed on an arc surface centered on the geometric center of the air inlet of the air outlet section (22).

3. The powder blowing device according to claim 2, characterized in that, The discharge mechanism (4) also includes a hopper (5) and a conveying pipe, wherein a spiral conveying shaft is provided inside the conveying pipe.

4. The powder blowing device according to claim 3, characterized in that, The installation angle between the lip plate (3) and the air outlet section (22) is in the range of 90°-180°.

5. The powder blowing device according to claim 4, characterized in that, The outer surface of the secondary air supply pipe (2) is provided with a guide rod (6), and the other end of the guide rod (6) is inserted into the ground.

6. A powder blowing device according to any one of claims 1-5, characterized in that, The primary air supply duct (1) is a circular pipe; the contraction section (21) of the secondary air supply duct (2) is connected to the port of the circular pipe via a flange.

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