Spraying and unblocking structure for powder feeding port

Abstract

The utility model relates to a powder feed inlet spraying unblocking structure which comprises a feed inlet pipe and a nozzle assembly installed on the feed inlet pipe, the nozzle assembly is composed of a quick coupler and a nozzle, one end of the quick coupler is provided with a quick chuck connector, the other end of the quick coupler is provided with external threads, the middle of the quick coupler is provided with a through hole, and the nozzle is cylindrical. The rear portion of the nozzle is inserted into a middle through hole of the quick coupler and fixedly connected with the quick coupler, a nozzle mounting opening is formed in the feeding port pipe, a threaded seat is arranged on the feeding port pipe at the mounting opening, the threaded seat is in a circular tube shape with internal threads, and one end of the quick coupler of the nozzle assembly is inserted into the threaded seat and connected with the threaded seat through the threads. According to the structure, liquid flow is sprayed to the pipe wall through the obliquely-installed nozzles, powder on the pipe wall can be easily washed down under the small pressure, the nozzle assemblies are installed in a threaded connection mode, replacement and adjustment are very convenient, and the structure has the advantages of being simple, easy to implement and adjust and good in unblocking effect.

Description

Technical Field

[0001] The utility model relates to a spraying and clearing blockage structure, in particular to a spraying and clearing blockage structure for a powder feed inlet. Background Art

[0002] In the production of chemical, food and new energy industries, it is often necessary to add various powders and liquids to specific equipment or containers (such as mixers, reactors, etc.) for mixing. When automatic feeding is used, various powders / liquids need to be added to the equipment through the feed port set on the equipment; when the powder is added to the equipment through the feed port, due to factors such as water vapor generated by the temperature rise in the equipment and splashing during the material mixing process, the feed port is close to the inner cavity of the equipment, and the powder will form a sticky wall here due to moisture. Over time, the feed port will be blocked, affecting the feeding speed and even causing the production line to stop.

[0003] In order to prevent the feed port from being blocked, it is usually installed with an electric / pneumatic push rod at the feed port to drive a scraper to clean the feed port, or a spray flushing method is used for cleaning. However, due to the arrangement / angle of the spray head, the clearing effect is not obvious. In the solution where the electric / pneumatic push rod drives the scraper to clean, the feed port is elliptical due to welding. In order to prevent the scraper from scratching the pipe wall, the scraper needs to maintain a large gap with the pipe wall, so the powder adhering to the pipe wall cannot be completely scraped off. In conventional spraying methods, the spray head is mostly installed perpendicular to the axis of the feed port. The liquid flow relies on a large pressure to flush the powder adhering to the pipe wall. In addition, with this installation method, the effective range of the nozzle liquid flow is the spray angle range of the nozzle, and the clearing range is limited, resulting in poor effect. Summary of the invention

[0004] The technical problem to be solved by the utility model is to provide a powder feed inlet spraying and clearing blockage structure, which adopts an inclined nozzle to spray liquid flow to the pipe wall, and can easily wash away the powder on the pipe wall under a relatively small pressure. It has the advantages of simple structure, easy implementation, easy adjustment and good clearing effect.

[0005] The technical solution to solve the above technical problems is: a powder feed port spray clearing structure, including a feed port pipe and a nozzle assembly installed on the feed port pipe, the nozzle assembly is composed of a quick-release connector and a nozzle, one end of the quick-release connector is a quick-release chuck connector, the other end is an external thread, and a through hole is opened in the middle, the nozzle is cylindrical, the rear part of the nozzle is inserted into the middle through hole of the quick-release connector and is fixedly connected to the quick-release connector, a nozzle mounting port is opened on the feed port pipe, and a threaded seat is arranged on the feed port pipe at the nozzle mounting port, the threaded seat is a round tube with an internal thread, and one end of the quick-release connector of the nozzle assembly is inserted into the threaded seat and is threadedly connected to the threaded seat.

[0006] Furthermore, the threaded seat is tilted, the nozzle assembly is installed in the threaded seat to form a tilted state, and the angle β between the center axis of the nozzle and the center axis of the feed port pipe is 68 to 73°.

[0007] Furthermore, the feed port pipe is arranged vertically, and is evenly provided with 2 to 5 mounting ports and threaded seats along the circumferential direction, and a nozzle assembly is installed in each threaded seat.

[0008] Furthermore, the nozzles of the nozzle assembly are arranged tangentially along the circumference of the feed port pipe, the intersection of the nozzle centerline and the feed port pipe is defined as the reference point, and the angle γ between the feed port pipe tangent passing through the reference point and the nozzle centerline passing through the reference point is 48 to 53°.

[0009] Furthermore, the intersection of the center axis of the nozzle and the feed inlet pipe is defined as a reference point, and the distance from the reference point to the bottom end of the feed inlet pipe is two-thirds of the height of the feed inlet pipe.

[0010] Furthermore, the feed port tube is arranged inclined, and a mounting port and a threaded seat are provided on the upper half of the tube wall in the same circumferential plane of the feed port tube. The mounting port and the threaded seat are arranged in 2 to 3 rows up and down, and each row is provided with 2 to 3 mounting ports and threaded seats respectively, and a nozzle assembly is installed in each threaded seat.

[0011] Furthermore, the angle δ between the nozzle center axis of the nozzle assembly installed in the same circumferential plane of the feed inlet pipe and the diameter line passing through the lowest point of the circumferential plane is 40-45°.

[0012] Due to the adoption of the above technical solution, the utility model has the following beneficial effects:

[0013] 1. The nozzle assembly is installed in the form of threaded connection, which is very convenient for replacement and adjustment. The depth of the nozzle inserted into the feed pipe can be adjusted by controlling the depth of the nozzle assembly screwed into the threaded seat, so as to achieve the best flushing effect.

[0014] 2. The nozzle of the nozzle assembly is facing downward and forms an angle of about 70° with the center axis of the feed inlet pipe. This installation angle can cover a wider range under the same spray force.

[0015] 3. When the feed port pipe is set vertically, the nozzle assembly is installed tangentially along the circumferential direction of the feed port pipe. The tangentially sprayed liquid flow can easily flush the powder on the pipe wall under a smaller pressure; three or more nozzles are evenly distributed along the circumferential direction to achieve a 360° full circumferential flushing effect on the pipe wall, and the clearing effect is good.

[0016] 4. When the feed inlet pipe is set at an angle, the area with more material accumulation is on the pipe wall at a lower position in the same circular plane. At this time, a nozzle assembly is installed on the upper half of the pipe wall at a higher position. The sprayed liquid flow mainly flushes the pipe wall at the lower position, and the clearing effect is good.

[0017] The technical features of a powder feed port spraying and clearing structure of the utility model are further described below in conjunction with the accompanying drawings and embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 : Schematic diagram of the spray clearing structure of the powder feed inlet of Example 1 of the utility model.

[0019] Figure 2 : Schematic diagram of the arrangement of the nozzle assembly along the circumferential direction of Example 1 of the utility model.

[0020] Figure 3 : Schematic diagram of the nozzle assembly structure of the present utility model.

[0021] Figure 4 : Schematic diagram of the spray clearing structure of the powder feed inlet of Example 2 of the utility model.

[0022] Figure 5 : Schematic diagram of the arrangement of the nozzle assembly along the circumferential direction of Example 2 of the present invention.

[0023] In the figure: 1-feeding pipe, 2-threaded seat, 3-nozzle assembly, 31-quick connector, 32-nozzle.

[0024] P1-equipment cover, P2-feed valve.

[0025] Figure 5 K in the figure represents the lowest point in the same circular plane. DETAILED DESCRIPTION Embodiment 1:

[0026] A powder feed inlet spray clearing structure, such as Figure 1-Figure 2 As shown, it includes a feed inlet pipe 1 arranged on the equipment cover P1 and a nozzle assembly 3 installed on the feed inlet pipe 1, wherein the nozzle assembly is composed of a quick-release connector 31 and a nozzle 32 (as shown in FIG. Figure 3As shown in the figure, one end of the quick connector 31 is an ISO quick connector chuck connector, which is used to connect to the external feed pipe of the spraying liquid, and the other end is an external thread with a through hole in the middle. The nozzle 32 is cylindrical, and the rear of the nozzle 32 is inserted into the middle through hole of the quick connector 31 and is welded and fixed with the quick connector 31 to form a whole. The feed port pipe 1 is provided with a nozzle installation port, and the feed port pipe at the nozzle installation port is provided with a threaded seat 2. The threaded seat is a round tube with internal threads. One end of the quick connector 31 of the nozzle assembly (the end provided with external threads) is inserted into the threaded seat 2 and is connected to the threaded seat by threads. The nozzle assembly 3 is screwed into the threaded seat 2 by threads, and the depth of the nozzle extending into the feed port pipe can be adjusted by adjusting the screwing depth of the threaded seat. The threaded seat 2 is tilted, and the nozzle assembly 5 is installed in the threaded seat to form an inclined state. The angle β between the center axis of the nozzle and the center axis of the feed port pipe is 70°, that is, the nozzle assembly 3 is installed on the wall of the feed port pipe at a certain angle through the threaded seat 2, and the nozzle outlet of the nozzle assembly is downward and forms an angle of 70° with the center axis of the feed port pipe. The front end of the nozzle 32 is located in the nozzle installation port or slightly extends out of the nozzle installation port and is located in the feed port pipe 1. The feed valve P2 of the equipment is connected to the upper end of the feed port pipe, and the nozzle assembly is located below the feed valve of the equipment.

[0027] In this embodiment, the feed port pipe is arranged vertically and is set on the top surface of the equipment cover P1. The feed port pipe 1 is evenly provided with three mounting ports and threaded seats 2 along the circumferential direction. The nozzle assembly 3 is provided with three nozzle assemblies, and a nozzle assembly is installed in each threaded seat. The nozzle of the nozzle assembly is arranged tangentially along the circumference of the feed port pipe. The intersection of the nozzle center axis and the feed port pipe is defined as the reference point. The angle γ between the tangent of the feed port pipe passing through the reference point and the center axis of the nozzle passing through the reference point is 50°. The distance H from the reference point to the bottom end of the feed port pipe is two-thirds of the height L of the feed port pipe.

[0028] This embodiment utilizes the coverage of the nozzle spray angle, arranges the nozzles at a certain angle, and arranges the nozzles from the radial direction of the feed port pipe. The liquid flow of the nozzle is ejected tangentially along the pipe wall, and the material attached to the pipe wall can be washed down better and faster under a smaller pressure; three (or more) are evenly distributed in the circumference, which can form a circular flow to clean the materials adhered to the pipe wall of the entire circumference of 360°. On the longitudinal section of the feed port pipe, the nozzle is installed at an angle of 70° to the central axis of the feed port (the nozzle is facing downward, toward the inside of the container), and the nozzle is facing downward. At the same nozzle spray angle, the coverage of the pipe wall is wider and the area is larger; and the liquid flow is sprayed closer and more directly to the part of the feed port where the powder adheres most seriously (the inside of the feed port pipe close to the container). The spray liquid flow formed under the combination of these two angles can obtain a faster and better clearing effect. Embodiment 2:

[0029] A powder feed inlet spray clearing structure, such as Figure 4-Figure 5 As shown, it includes a feed port pipe 1 arranged on the equipment cover P1 and a nozzle assembly 3 installed on the feed port pipe 1. The structure of the nozzle assembly 3 and the connection method with the feed port pipe are the same as those in Example 1, except that: the feed port pipe 1 is arranged obliquely, the feed port pipe is arranged on the side of the equipment cover P1, and a mounting port and a threaded seat 2 are arranged on the upper half of the pipe wall in the same circumferential plane of the feed port pipe. The mounting port and the threaded seat are arranged in two rows up and down, and each row is respectively provided with two mounting ports and threaded seats. Four nozzle assemblies 3 are provided, and a nozzle assembly 3 is installed in each threaded seat. The angle δ between the nozzle center axis of the two nozzle assemblies installed in the same circumferential plane of the feed port pipe and the diameter line passing through the lowest point of the circumferential plane is 40-45°.

[0030] In each embodiment of the utility model, the nozzle adopts a wide-angle solid conical nozzle, which can produce a solid conical spray with a spray angle of 120 to 125 degrees, and the spray in the entire jet area is uniform, the droplet size is medium to large, and the jet effect in the covered area is very good.

[0031] During operation, the powder is automatically fed, generally by opening a feed port on the equipment cover P1, setting a feed port pipe 1 at the feed port, and feeding the powder into the container from the feed port pipe 1. A feed valve P2 is installed on the feed port pipe 1. When the equipment needs to add powder, the feed valve is opened, and the powder falls into the container through the feed port pipe 1. The feed valve is closed and the powder stops being added. The steam inside the equipment and the splashing generated by the agitator during stirring only affect this section of the feed port pipe. In order to reduce wall sticking, the feed port pipe is usually made as short as possible during design. The nozzle assembly is installed on the feed port pipe, and the powder adhering to the inner wall of the feed port pipe is washed away by the spray flow to complete the spray clearing work.

Claims

1. A powder feed port spraying and clearing structure, characterized in that: The invention comprises a feed inlet pipe (1) and a nozzle assembly (3) mounted on the feed inlet pipe, wherein the nozzle assembly is composed of a quick-release joint (31) and a nozzle (32), wherein one end of the quick-release joint is a quick-release chuck joint and the other end is an external thread with a through hole in the middle, wherein the nozzle is cylindrical, and the rear of the nozzle (32) is inserted into the middle through hole of the quick-release joint (31) and fixedly connected to the quick-release joint, wherein a nozzle mounting opening is formed on the feed inlet pipe, and a threaded seat (2) is provided on the feed inlet pipe at the nozzle mounting opening, wherein the threaded seat is in the shape of a round tube with an internal thread, and one end of the quick-release joint (31) of the nozzle assembly is inserted into the threaded seat (2) and is threadedly connected to the threaded seat.

2. A powder feed port spraying and clearing structure according to claim 1, characterized in that: The threaded seat is arranged in an inclined manner, and the nozzle assembly is installed in the threaded seat to form an inclined state. The angle β between the center axis of the nozzle and the center axis of the feed port pipe is 68-73°.

3. A powder feed port spraying and clearing structure according to claim 1 or 2, characterized in that: The feed inlet pipe is arranged vertically, and is evenly provided with 2 to 5 mounting ports and threaded seats along the circumferential direction, and a nozzle assembly is installed in each threaded seat.

4. A powder feed port spraying and clearing structure according to claim 3, characterized in that: The nozzles of the nozzle assembly are arranged tangentially along the circumference of the feed port pipe, the intersection of the nozzle center axis and the feed port pipe is defined as the reference point, and the angle γ between the feed port pipe tangent passing through the reference point and the nozzle center axis passing through the reference point is 48-53°.

5. A powder feed port spraying and clearing structure according to claim 3, characterized in that: The intersection of the nozzle center axis and the feed inlet pipe is defined as the reference point, and the distance from the reference point to the bottom end of the feed inlet pipe is two-thirds of the height of the feed inlet pipe.

6. A powder feed port spraying and clearing structure according to claim 1 or 2, characterized in that: The feed port pipe is arranged inclined, and a mounting port and a threaded seat are arranged on the upper half of the pipe wall in the same circumferential plane of the feed port pipe. The mounting port and the threaded seat are arranged in 2 to 3 rows up and down, and each row is respectively provided with 2 to 3 mounting ports and threaded seats, and a nozzle assembly is installed in each threaded seat.

7. A powder feed port spraying and clearing structure according to claim 6, characterized in that: The angle δ between the nozzle center axis of the nozzle assembly installed in the same circumferential plane of the feed inlet pipe and the diameter line passing through the lowest point of the circumferential plane is 40-45°.

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