Solid powder feeding device

Abstract

The utility model discloses a solid powder feeding device, which relates to the technical field of solid powder feeding and comprises a vacuum feeding module, a vacuum buffer tank and a pipeline module connected with the vacuum feeding module and the vacuum buffer tank. The knocking module I, the knocking module II and the knocking module III are respectively arranged outside the vacuum feeding module, the vacuum buffer tank and the pipeline module. The first knocking module and the second knocking module are arranged in a sliding mode, the third knocking module is fixedly arranged and located at the bent position of the pipeline module, and the first knocking module, the second knocking module and the third knocking module each comprise an air hammer. The three knocking modules respectively knock the vacuum feeding module, the vacuum buffer tank and the pipeline module, so that solid powder is prevented from being assisted on the inner wall of a corresponding mechanism in the feeding process, the feeding precision is improved, the feeding requirement of polyamide synthesis is met, and the reaction stability is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of solid powder feeding, and more specifically to a solid powder feeding device. Background Art

[0002] Aramid, scientifically known as aromatic polyamine fiber, is one of the world's three major high-tech fibers. Aramid has excellent properties such as high specific strength, high specific modulus, high temperature resistance and flame retardancy. It is known as the world's three major high-performance fibers together with carbon fiber and ultra-high molecular weight polyethylene fiber. The main chain of aramid is composed of aromatic rings and amide bonds. The aromatic ring structure has high rigidity. The polymer forms a rod-like structure in an extended state, which makes the aramid fiber have high space utilization and can accommodate more polymers per unit volume. In addition, the conformation of the macromolecular chain is approximately linear, with a small cross-sectional area. The resistance to angular deformation and intra-bond rotation of the polymer chain is large, and the relative molecular mass is large. Therefore, aramid fiber has the characteristics of high strength, high modulus, good dimensional stability, and its own chemical properties make it have the advantages of high temperature resistance, corrosion resistance, insulation and flame retardancy. It has outstanding comprehensive performance and is the lightest and thinnest coating material with the best performance at this stage. It is widely used in many fields such as aerospace, automobile, electromechanical, and construction.

[0003] The synthesis of polyamide is very sensitive to temperature. The existing reactor has limited ability to regulate temperature, which leads to the formation of polyamide byproducts and gel. Therefore, the ratio of various materials in the polyamide production process is very strict (material balance can stabilize the reaction temperature). If the actual reaction ratio is different, it will affect the reaction stability at the least, and make the reaction uncontrolled at the worst, and finally lead to safety accidents, causing property losses and personal injuries. At present, most of the domestic polyamide production adopts two-part feeding and processing: liquid materials are added from high-level storage tanks to low-level reactors through pipelines; solid materials are sucked into the vacuum tank through the vacuum feeder according to the production standard, and then the exhaust port is opened to remove the negative pressure of the vacuum tank, and the vacuum tank discharge pneumatic valve is opened to add materials to the reactor. According to the control process of the production site, the connecting pipe between the vacuum feeder and the vacuum tank is connected at a right angle. The feeder, the bend of the conveying pipe, and the inner wall of the vacuum tank have the most residual materials. After calculation, when 25kg of powder is added, there is about 400g of residue in the entire feeding system, which is far more than the material feeding accuracy requirement of 5‰. Therefore, the feeding device needs to be improved to meet the requirements of polyamide synthesis on the dosage accuracy. Utility Model Content

[0004] The purpose of the utility model is to provide a solid powder feeding device, which reduces the adhesion of powder materials to the inner wall of the tank body and the residue on the elbows and inner walls of the pipes, resulting in the failure of materials to be added to the bottom reactor according to the accuracy requirements of the standard amount, which greatly affects the quality of the product, and is used to solve the technical problems existing in the above-mentioned background technology.

[0005] The technical solution of the utility model provides a solid powder feeding device, comprising a vacuum feeding module, a vacuum buffer tank, a pipeline module connecting the vacuum feeding module and the vacuum buffer tank, and a knocking module 1, a knocking module 2 and a knocking module 3 respectively arranged outside the vacuum feeding module, the vacuum buffer tank and the pipeline module;

[0006] The knocking module 1 and the knocking module 2 are slidably arranged, and the knocking module 3 is fixedly arranged and located at the bending part of the pipeline module. The knocking module 1, the knocking module 2 and the knocking module 3 all include air hammers.

[0007] In a preferred embodiment, the knocking module 1 and the knocking module 2 also include a mounting ring, a connecting block, an annular electric slide rail fixed to the connecting block, and a mounting seat arranged on the annular electric slide rail, and the air hammer is installed on the mounting seat.

[0008] In a preferred embodiment, the output end of the air hammer is connected to a striking head, and a rubber sleeve is arranged outside the striking head.

[0009] In a preferred embodiment, the vacuum feeding module includes an air pump module and a material tank connected to the air pump module, and the mounting ring is arranged on the periphery of the material tank and the vacuum buffer tank.

[0010] In a preferred embodiment, the pipeline module includes a discharge section, a horizontal connecting section 1, an inclined connecting section and a horizontal connecting section 2 which are connected in sequence, and an air hammer is arranged near the connection between the horizontal connecting section 1 and the horizontal connecting section 2 and the inclined connecting section.

[0011] In a preferred embodiment, the discharging section, the horizontal connecting section 1, the inclined connecting section and the horizontal connecting section 2 are sequentially connected through an elbow structure.

[0012] In a preferred embodiment, the angle between the inclined connecting section and the horizontal plane is 60-75°.

[0013] The beneficial effects of the technical solution of the utility model are:

[0014] The three groups of knocking modules knock on the vacuum feeding module, vacuum buffer tank and pipeline module respectively to prevent solid material powder from being attached to the inner wall of the corresponding mechanism during the feeding process, so as to improve the feeding accuracy, meet the feeding requirements of polyamide synthesis and improve the reaction stability.

[0015] The knocking module three is located at the bend of the pipeline module, because the bend of the pipeline is more likely to adhere to materials, and the material removal effect is better when it is set at the bend. The bend is an elbow structure, and an inclined section is set. Compared with the traditional right-angle structure, powder can pass through the elbow smoothly to reduce aggregation.

[0016] The air hammer can move on the circular electric slide rail, and the moving part can be struck, thereby achieving multi-directional striking, making the adhesion removal more complete. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of the overall structure of the utility model.

[0018] Figure 2 This is the front view of the utility model.

[0019] Figure 3 This is a schematic diagram of the structure of the air hammer of the utility model.

[0020] Explanation of the accompanying drawings: 1 vacuum feeding module, 2 air pump module, 3 material tank, 4 feed port, 5 vacuum buffer tank, 6 pipeline module, 7 discharge section, 8 horizontal connecting section 1, 9 inclined connecting section, 10 horizontal connecting section 2, 11 mounting ring, 12 connecting block, 13 annular electric slide rail, 14 mounting seat, 15 air hammer, 16 knocking head, 17 rubber sleeve. DETAILED DESCRIPTION

[0021] The present invention is further described in detail below in conjunction with the accompanying drawings and specific embodiments. The embodiments of the present invention are provided for the sake of illustration and convenience of description, and are not intended to be exhaustive or to limit the present invention to the disclosed forms. Many modifications and variations are obvious to those of ordinary skill in the art. The embodiments are selected and described in order to better illustrate the principles and practical applications of the present invention, and to enable those of ordinary skill in the art to understand the present invention and thereby design various embodiments with various modifications suitable for specific purposes.

[0022] like Figure 1-3 As shown, the technical solution of the utility model provides a solid powder feeding device, including a vacuum feeding module 1, a vacuum buffer tank 5, a pipeline module 6 connecting the vacuum feeding module 1 and the vacuum buffer tank 5, and a knocking module 1, a knocking module 2 and a knocking module 3 respectively arranged outside the vacuum feeding module 1, the vacuum buffer tank 5 and the pipeline module 6. The three groups of knocking modules knock the vacuum feeding module 1, the vacuum buffer tank 5 and the pipeline module 6 respectively to prevent the solid powder from adhering to the inner wall of the corresponding mechanism during the feeding process, so as to improve the feeding accuracy, meet the feeding requirements of polyamide synthesis, and improve the reaction stability.

[0023] The knocking module 1 and the knocking module 2 are slidably arranged, and the knocking module 3 is fixedly arranged and located at the bend of the pipeline module 6. Because the bend of the pipeline is more likely to adhere to materials, the material removal effect of being arranged at the bend is better. The knocking module 1, the knocking module 2 and the knocking module 3 all include an air hammer 15. The gas is used to cooperate with the magnet structure to realize the extension and contraction of the output end of the air hammer 15, thereby realizing the knocking of the corresponding part. The knocking generates vibration to make the attached materials fall off. The air hammer 15 is an existing structure.

[0024] The knocking module 1 and the knocking module 2 further include a mounting ring 11, a connecting block 12, an annular electric slide rail 13 fixed to the connecting block 12, and a mounting seat 14 arranged on the annular electric slide rail, and the air hammer 15 is mounted on the mounting seat 14. The vacuum feeding module 1 includes an air pump module 2 and a material tank 3 connected to the air pump module 2, the mounting ring 11 is arranged on the periphery of the material tank 3 and the vacuum buffer tank 5, and a feed port 4 is arranged on the material tank 3, and the raw material is sucked into the material tank 3 by the negative pressure of the feed port 4.

[0025] The air hammer 15 can move on the annular electric slide rail 13, and the moving hammer can be used to knock, thereby achieving multi-directional knocking, so that the attachment removal is more complete. The output end of the air hammer 15 is connected to a knocking head 16, and a rubber sleeve 17 is arranged outside the knocking head 16. The rubber sleeve 17 prevents damage to the device body during the knocking process and plays a certain protective role.

[0026] The pipeline module 6 includes a discharge section 7, a horizontal connection section 1 8, an inclined connection section 9 and a horizontal connection section 2 10 which are connected in sequence, and an air hammer 15 is arranged near the connection between the horizontal connection section 1 8 and the horizontal connection section 2 10 and the inclined connection section 9. The discharge section 7, the horizontal connection section 1 8, the inclined connection section 9 and the horizontal connection section 2 10 are connected in sequence through an elbow structure. The angle between the inclined connection section and the horizontal plane is 60-75°. The bending part is an elbow structure, and an inclined section is arranged. Compared with the traditional right-angle structure, the powder can pass through the elbow smoothly to reduce aggregation.

[0027] Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field and related fields without creative work should fall within the scope of protection of the present invention. Structures, devices and operating methods not specifically described and explained in the present invention shall be implemented according to conventional means in the field unless otherwise specified and limited.

Claims

1. A solid powder feeding device, characterized in that: It includes a vacuum feeding module, a vacuum buffer tank, a pipeline module connecting the vacuum feeding module and the vacuum buffer tank, and a knocking module 1, a knocking module 2 and a knocking module 3 respectively arranged outside the vacuum feeding module, the vacuum buffer tank and the pipeline module; The knocking module 1 and the knocking module 2 are slidably arranged, and the knocking module 3 is fixedly arranged and located at the bending part of the pipeline module. The knocking module 1, the knocking module 2 and the knocking module 3 all include air hammers.

2. A solid powder feeding device according to claim 1, characterized in that: The knocking module 1 and the knocking module 2 also include a mounting ring, a connecting block, an annular electric slide rail fixed to the connecting block, and a mounting seat arranged on the annular electric slide rail, and the air hammer is mounted on the mounting seat.

3. A solid powder feeding device according to claim 1, characterized in that: The output end of the air hammer is connected with a striking head, and a rubber sleeve is arranged outside the striking head.

4. A solid powder feeding device according to claim 2, characterized in that: The vacuum feeding module comprises an air pump module and a material tank connected to the air pump module, and the mounting ring is arranged on the periphery of the material tank and the vacuum buffer tank.

5. A solid powder feeding device according to claim 1, characterized in that: The pipeline module includes a discharge section, a horizontal connection section 1, an inclined connection section and a horizontal connection section 2 which are connected in sequence, and an air hammer is arranged near the connection between the horizontal connection section 1 and the horizontal connection section 2 and the inclined connection section.

6. A solid powder feeding device according to claim 5, characterized in that: The discharging section, the first horizontal connecting section, the inclined connecting section and the second horizontal connecting section are connected in sequence through an elbow structure.

7. A solid powder feeding device according to claim 5, characterized in that: The angle between the inclined connecting section and the horizontal plane is 60-75°.

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