Centrifugal spray dryer nozzle with self-cleaning and anti-wear functions

Abstract

The utility model relates to spray drying equipment technical field, and disclose the centrifugal spray dryer nozzle with self -cleaning and anti -wear function has, including the nozzle body, the top of nozzle body is provided with the three -way joint, and the nozzle body is connected with the feed pipe and the flush pipe through the three -way joint, the feed pipe is provided with the feed electromagnetic valve in the junction of three -way joint, flush the electromagnetic valve is provided in the junction of flush pipe and three -way joint, the top of nozzle body is installed with piezoelectric vibrator in both sides position, the one side of nozzle body is fixedly installed with the air pipe through the mounting block no.

Description

Technical Field

[0001] This utility model relates to the technical field of spray drying equipment, specifically a centrifugal spray dryer nozzle with self-cleaning and anti-wear functions. Background Technology

[0002] Concrete additives require a drying process during production to improve their performance and stability. The nozzle of the centrifugal spray dryer is the core component of the centrifugal spray dryer. It atomizes liquid concrete additives such as water-reducing agents and retarders into tiny droplets through a high-speed rotating centrifugal disc. These droplets are then quickly dried into powder upon contact with hot air. If the nozzle is not thoroughly cleaned when water-reducing agents and retarders are produced alternately, residual water-reducing agents will contaminate the next batch of retarders, affecting production quality.

[0003] A search revealed a Chinese patent for a high-speed centrifugal spray dryer, publication number CN214551237U. The patent includes a nozzle with a scraping device. The scraping device includes a piston telescopic rod and a scraping ring. The fixed end of the piston telescopic rod is fixed to the side of the nozzle, and the scraping ring is fitted onto the main nozzle of the nozzle. The scraping ring and the nozzle are in a sliding tight fit.

[0004] The above-mentioned centrifugal dryer's nozzle sprays material simultaneously from both the main nozzle and the auxiliary nozzle, effectively avoiding uneven air pressure around the nozzle and thus preventing powder accumulation at the nozzle. It is also equipped with a scraping device. During the spraying process, the piston extension rod moves, which drives the scraping ring to reciprocate on the nozzle, effectively preventing powder accumulation on the nozzle. However, its structure is relatively simple, and it only uses a scraper to clean the outside of the nozzle, making it difficult to clean the nozzle itself. After long-term use, the nozzle is easily clogged by material, requiring professional disassembly and maintenance. This process is quite cumbersome, and the scraper ring moves back and forth, which increases nozzle wear and affects its service life. Utility Model Content

[0005] The purpose of this invention is to provide a centrifugal spray dryer nozzle with self-cleaning and wear-resistant functions, which can effectively solve the problems in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: A centrifugal spray dryer nozzle with self-cleaning and anti-wear functions includes a nozzle body, a three-way connector at the top of the nozzle body, and a feed pipe and a flushing pipe connected to the nozzle body through the three-way connector. A feed solenoid valve is provided at the connection between the feed pipe and the three-way connector. A flushing solenoid valve is provided at the connection between the flushing pipe and the three-way connector. Piezoelectric vibrators are installed on both sides of the top of the nozzle body. An air supply pipe is fixedly installed on one side of the nozzle body near the upper position via mounting block one. An adjusting pipe is slidably installed on one side of the nozzle body near the lower position via mounting block two. A metal corrugated pipe is connected between the adjusting pipe and the air supply pipe. A blower pipe is connected to the end of the adjusting pipe away from the air supply pipe. A nozzle is provided at the bottom of the nozzle body.

[0007] Preferably, the inner side of the blower pipe is provided with a plurality of blower openings, the blower openings are inclined, and the direction of the blower openings is adapted to match the nozzle.

[0008] Preferably, the nozzles are arranged at equal intervals on the nozzle body, and the outer walls of both the nozzle body and the nozzles are covered with a tungsten carbide coating.

[0009] Preferably, both the regulating pipe and the air supply pipe are hollow pipes, and the outer ring of the regulating pipe is provided with external threads. The outer ring of the regulating pipe and the upper and lower ends of the mounting block two are both threaded with adjusting nuts.

[0010] Preferably, the upper and lower ends of the two adjusting nuts are in contact with the upper and lower surfaces of the mounting block two, and the metal bellows is flexible and made of austenitic stainless steel.

[0011] Preferably, the air blowing pipe is arranged in a ring shape, and there is an adjustment gap between the air blowing port and the air blowing pipe and the nozzle body, and the bottom surface of the air blowing port and the air blowing pipe is higher than the top surface of the nozzle.

[0012] Compared with the prior art, the beneficial effects of this utility model are: This invention, by setting up a flushing pipe, a flushing solenoid valve, a nozzle body, and a piezoelectric vibrator in coordination, can deliver cleaning liquid into the nozzle body when the machine is stopped, so as to flush out residual materials, reduce the probability of blockage, and prevent residual raw materials from contaminating subsequent production during alternating production. Moreover, the cleaning process does not require disassembly, thereby improving cleaning efficiency.

[0013] By using a piezoelectric vibrator in conjunction with the nozzle body, high-frequency vibrations are generated during cleaning to break down the adhesion of materials and further prevent clogging at the nozzle. At the same time, the air duct, which consists of a blower, a blower nozzle, a metal corrugated pipe, an air supply pipe, and a regulating pipe, can spray strong air to the nozzle during cleaning to blow off firmly adhered materials. Both the nozzle body and the outer wall of the nozzle are covered with a tungsten carbide coating, which can improve wear resistance. At the same time, the cleaning process will not cause additional wear to the nozzle body, thus extending its service life. Attached Figure Description

[0014] Figure 1This is a schematic diagram of the overall structure of the centrifugal spray dryer nozzle with self-cleaning and anti-wear functions in an embodiment of this utility model; Figure 2 This is a front view of the structure of the nozzle, nozzle body, and flushing pipe in the embodiment of this utility model; Figure 3 This is a schematic diagram of the structure of the blower pipe and blower outlet in the embodiment of this utility model; Figure 4 This is a top view of the nozzle body in an embodiment of the present invention.

[0015] In the diagram: 1. Nozzle body; 2. Feed pipe; 3. Flushing pipe; 4. Feed solenoid valve; 5. Flushing solenoid valve; 6. Piezoelectric vibrator; 7. Air supply pipe; 8. Adjusting pipe; 9. Metal bellows; 10. Adjusting nut; 11. Air blowing pipe; 12. Air blowing nozzle; 13. Nozzle. Detailed Implementation

[0016] 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.

[0017] Example 1 Combination Figures 1-4 The centrifugal spray dryer nozzle with self-cleaning and anti-wear functions includes a nozzle body 1. A three-way connector is provided at the top of the nozzle body 1, and the nozzle body 1 is connected to a feed pipe 2 and a flushing pipe 3 through the three-way connector. A feed solenoid valve 4 is provided at the connection between the feed pipe 2 and the three-way connector.

[0018] See Figure 2 and Figure 4 Furthermore, a flushing solenoid valve 5 is provided at the connection between the flushing pipe 3 and the three-way connector. Piezoelectric vibrators 6 are installed on both sides of the top of the nozzle body 1. An air supply pipe 7 is fixedly installed on one side of the nozzle body 1 near the upper position via mounting block one. An adjusting pipe 8 is slidably installed on one side of the nozzle body 1 near the lower position via mounting block two. A metal corrugated pipe 9 is connected between the adjusting pipe 8 and the air supply pipe 7. A blower pipe 11 is connected to the end of the adjusting pipe 8 away from the air supply pipe 7.

[0019] Specifically, when the nozzle body 1 is stopped, the flushing pipe 3 can be pre-connected to the outlet of the external cleaning solution. During subsequent flushing, the feeding solenoid valve 4 can be closed and the flushing solenoid valve 5 can be opened as needed. At the same time, the external outlet valve can be opened to deliver the cleaning solution to the spray pipe of the nozzle body 1, so as to flush out the residual material in the channel and prevent the residual material from adhering to the inner wall and causing blockage. During the flushing process, the piezoelectric vibrator 6 can be energized as needed. The piezoelectric vibrator 6 generates high-frequency vibration on the nozzle body 1 to shake off any impurities that may adhere to it, thereby further improving the cleaning effect and performing self-cleaning and anti-clogging.

[0020] Example 2 See Figure 2 and Figure 3 Furthermore, based on Embodiment 1, the nozzle body 1 is provided with a nozzle 13 at the bottom end, and a number of air outlets 12 are provided on the inner side of the air pipe 11. The air outlets 12 are inclined and the air outlet orientation of the air outlets 12 is adapted to match the nozzles 13. The number of nozzles 13 are arranged at equal intervals on the nozzle body 1. The outer walls of both the nozzle body 1 and the nozzle 13 are covered with a tungsten carbide coating. The regulating pipe 8 and the air supply pipe 7 are both hollow pipes. The outer ring of the regulating pipe 8 is provided with an external thread. The outer ring of the regulating pipe 8 and the upper and lower ends of the mounting block 2 are threaded with adjusting nuts 10. The upper and lower ends of the two adjusting nuts 10 are in contact with the upper and lower surfaces of the mounting block 2. The metal corrugated pipe 9 is flexible and made of austenitic stainless steel. The air blowing pipe 11 is annular. There is an adjustment gap between the air blowing port 12 and the air blowing pipe 11 and the nozzle body 1. The bottom surface of the air blowing port 12 and the air blowing pipe 11 is higher than the top surface of the nozzle 13.

[0021] Specifically, the outer walls of both the nozzle body 1 and the flushing pipe 3 are covered with a tungsten carbide coating, which improves wear resistance. At the same time, the cleaning of each component will not cause significant wear to the nozzle body 1, thereby increasing the service life of the nozzle body 1. During liquid infusion cleaning, the air supply pipe 7 can be connected to an external cleaning air pipe to deliver cleaning air to the air outlet 12 for spraying. Since the air outlet 12 is located above the nozzle 13, most of the material adhering to the nozzle 13 can be blown off. At the same time, during the cleaning process, the nozzle 13 can be kept at an appropriate temperature by spraying hot air to prevent the material from cooling and clumping, thereby improving the cleaning effect.

[0022] In actual operation, when the nozzle body 1 is in a stopped state, the flushing pipe 3 can be connected to the outlet of the external cleaning solution in advance. During subsequent flushing, the material conveying solenoid valve 4 can be closed as needed, and the flushing solenoid valve 5 can be opened. At the same time, the external outlet valve is controlled to open so that the cleaning solution can be delivered to the spraying pipe of the nozzle body 1 so as to flush out the residual material in the channel and avoid the residual material adhering to the inner wall and causing blockage. Furthermore, during the rinsing process, the piezoelectric vibrator 6 can be energized as needed. The piezoelectric vibrator 6 generates high-frequency vibrations on the nozzle body 1 to shake off any adhering impurities, thereby further improving the cleaning effect and enabling self-cleaning and anti-clogging. Furthermore, the outer walls of both the nozzle body 1 and the flushing pipe 3 are covered with a tungsten carbide coating, which can improve the wear resistance. At the same time, the nozzle body 1 will not experience significant wear during cleaning, thus increasing its service life. Additionally, during liquid infusion cleaning, the air supply pipe 7 can be connected to an external cleaning air pipe to deliver cleaning air to the air outlet 12 for spraying. Since the air outlet 12 is located above the nozzle 13, most of the material adhering to the nozzle 13 can be blown off. During the cleaning process, the cleaning solution can be heated and the cleaning air can be heated. By cleaning with warm water and spraying hot air, the nozzle 13 can be kept at an appropriate temperature to prevent residual materials from cooling and clumping. After rinsing, hot air can be continuously sprayed for a period of time to dry the cleaning solution and improve the cleaning effect. Furthermore, the control components and modules used for starting and stopping the aforementioned flushing solenoid valve 5, conveying solenoid valve 4, and piezoelectric vibrator 6 are all existing technologies, which can be fully implemented by those skilled in the art, and need not be elaborated upon. The content protected by this utility model does not involve improvements to the software and power supply.

[0023] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A centrifugal spray dryer nozzle with self-cleaning and anti-wear functions, comprising a nozzle body (1), wherein a three-way connector is provided at the top of the nozzle body (1), and the nozzle body (1) is connected to a feed pipe (2) and a flushing pipe (3) through the three-way connector, characterized in that: A material conveying solenoid valve (4) is provided at the connection between the material conveying pipe (2) and the three-way connector. A flushing solenoid valve (5) is provided at the connection between the flushing pipe (3) and the three-way connector. Piezoelectric vibrators (6) are installed on both sides of the top of the nozzle body (1). An air supply pipe (7) is fixedly installed on one side of the nozzle body (1) near the upper position via mounting block one. An adjusting pipe (8) is slidably installed on one side of the nozzle body (1) near the lower position via mounting block two. A metal corrugated pipe (9) is connected between the adjusting pipe (8) and the air supply pipe (7). A blower pipe (11) is connected to the end of the adjusting pipe (8) away from the air supply pipe (7). A nozzle (13) is provided at the bottom of the nozzle body (1).

2. The centrifugal spray dryer nozzle with self-cleaning and anti-wear functions according to claim 1, characterized in that: The inner side of the blower pipe (11) is provided with several blower ports (12), the blower ports (12) are inclined, and the air outlet of the blower ports (12) is adapted to match the nozzle (13).

3. The centrifugal spray dryer nozzle with self-cleaning and anti-wear functions according to claim 1, characterized in that: Several nozzles (13) are arranged at equal intervals on the nozzle body (1), and the outer walls of both the nozzle body (1) and the nozzles (13) are covered with a tungsten carbide coating.

4. The centrifugal spray dryer nozzle with self-cleaning and anti-wear functions according to claim 1, characterized in that: Both the regulating pipe (8) and the air supply pipe (7) are hollow pipes, and the outer ring of the regulating pipe (8) is provided with external threads. The outer ring of the regulating pipe (8) and the upper and lower ends of the mounting block 2 are threaded with adjusting nuts (10).

5. The centrifugal spray dryer nozzle with self-cleaning and anti-wear functions according to claim 4, characterized in that: The upper and lower ends of the two adjusting nuts (10) are in contact with the upper and lower surfaces of the mounting block 2. The metal bellows (9) is flexible and made of austenitic stainless steel.

6. The centrifugal spray dryer nozzle with self-cleaning and anti-wear functions according to claim 2, characterized in that: The air blowing pipe (11) is arranged in a ring shape. There is an adjustment gap between the air blowing port (12) and the air blowing pipe (11) and the nozzle body (1). The bottom surface of the air blowing port (12) and the air blowing pipe (11) is higher than the top surface of the nozzle (13).

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