Resistance disc granulation tower spray gun nozzle monitoring and automatic cleaning system

Abstract

The utility model relates to a resistor disc prilling tower spray gun nozzle monitoring and automatic cleaning system, which comprises a prilling tower, a spray gun, a cleaning deflector rod, a deflector rod driving assembly, a monitoring camera and a monitoring screen, the spray gun is arranged in the prilling tower, the deflector rod driving assembly is arranged on the inner wall of one side of the prilling tower, an observation window is arranged on the other side of the prilling tower, and the monitoring camera is arranged on the inner wall of the prilling tower. The front end of the deflector rod driving assembly is provided with a cleaning deflector rod moving on the upper side of the spray gun, and the outer side of the observation window is provided with a monitoring camera connected with the monitoring screen through a circuit. The deflector rod driving assembly comprises a support and an air cylinder, the rear end of the support is installed on the inner wall of the prilling tower, a supporting base is arranged at the front end of the support, the air cylinder is arranged on the supporting base, and the cleaning deflector rod is driven by the air cylinder to move. According to the utility model, automatic monitoring and automatic cleaning can be realized on the piled materials on the spray gun nozzle, so that the automation degree and the cleaning efficiency of the equipment are improved.

Description

Technical Field

[0001] This utility model relates to the field of resistor sheet production, specifically a resistor sheet granulation tower spray gun nozzle monitoring and automatic cleaning system. Background Technology

[0002] The core component of a surge arrester is the zinc oxide resistor sheet, and the granulation process of the zinc oxide resistor sheet plays a crucial role in its quality during production. The granulation process involves pressurizing a prepared slurry using a diaphragm pump, then spraying it through a nozzle into a granulation tower to form atomized particles. These particles then come into contact with hot air blown down from the top of the granulation tower, creating a mixed flow and forming a dry, compliant powder. For example, patent CN207951376U discloses a resistor sheet granulation tower equipped with a first infrared generator and a second infrared generator. Both the first and second infrared receivers are connected to a signal comparator, which is sequentially connected to a pressure controller, a pressurizing diaphragm pump, and a spray gun, with the spray gun's tip extending into the granulation tower.

[0003] However, in actual production, it was found that during the spraying process, the viscous slurry easily adhered to the area around the nozzle orifice of the spray gun. This caused poor spray shape and even clogging of the spray gun, which in turn affected the shape of the powder particles and the electrical performance of the subsequently produced resistor sheets. In the existing technology, the spraying status inside the granulation tower is mainly observed manually through a window. If there is material accumulation at the nozzle, the worker needs to use a stainless steel rod nearly 2 meters long to reach into the tower through the tower wall door to clean the material accumulation at the nozzle of the spray gun, so as to remove the slurry around the nozzle orifice as soon as possible. However, this operation is not only time-consuming and laborious, but also prone to incomplete cleaning. Manual observation through the window is also prone to human negligence, resulting in failure to clean in time. In addition, due to the structural limitations of the granulation tower, the observation platform is generally set at a height of more than 3 meters. Operators need to climb up the platform more than 3 meters high each time to operate, which is prone to falling. The highest temperature inside the granulation tower is about 300°C. Operators are also prone to burns when cleaning the material accumulation with a stainless steel rod.

[0004] Furthermore, the main design focus of existing granulation tower spray guns is on improving spray gun efficiency. For example, patent CN205361729U discloses a novel spray gun for a spray granulation tower, in which the gun barrel is inclined at a certain angle to the inner wall of the granulation tower, and three nozzles are sequentially arranged on the gun barrel. When the three nozzles spray simultaneously, they can form a large-angle fan shape, thereby improving the spray atomization efficiency. However, for the slurry used in the production of zinc oxide resistor sheets, the large number of nozzles in this type of spray gun actually makes it more prone to clogging. Utility Model Content

[0005] The purpose of this invention is to provide a monitoring and automatic cleaning system for the nozzle of a resistive sheet granulation tower spray gun, which can automatically monitor and clean the material buildup on the nozzle of the spray gun. The entire process no longer requires manual observation, monitoring and operation, which improves the automation level and cleaning efficiency of the equipment.

[0006] The objective of this utility model is achieved through the following technical solution:

[0007] A spray gun nozzle monitoring and automatic cleaning system for a resistive sheet granulation tower includes a granulation tower, a spray gun, a cleaning lever, a lever drive assembly, a monitoring camera, and a monitoring screen. The spray gun is located in the granulation tower, and the lever drive assembly is located on one inner wall of the granulation tower, while an observation window is located on the other side. The front end of the lever drive assembly has a cleaning lever that moves above the spray gun, and the outside of the observation window has a monitoring camera connected to the monitoring screen via a wire. The lever drive assembly includes a bracket and a cylinder, wherein the rear end of the bracket is mounted on the inner wall of the granulation tower, and the front end of the bracket has a support base. The cylinder is located on the support base, and the cleaning lever is driven to move by the cylinder.

[0008] The support base is provided with a protective cover, and the cylinder is located in the protective cover. The protective cover has an opening on the side near the spray gun, and the cleaning lever extends out from the opening.

[0009] The support includes support rods on both sides, and the rear end of the support rod is fixedly connected to the inner wall of the granulation tower, and the front end is fixedly connected to the corresponding end of the support seat. The support rod is a hollow structure, and the air supply pipe of the cylinder extends out from the inside of the support rod (801) on either side.

[0010] The support base is provided with a slide rail, and the rear end of the cleaning lever is provided with a slider that cooperates with the slide rail.

[0011] An observation platform is provided on one side of the granulation tower, and the observation platform is located below the observation window. The monitoring screen is located on the lower side of the observation platform.

[0012] The monitoring screen is connected to the control system via a line, and a dynamic monitoring area is set on the monitoring screen by the control system. When the material piled on the upper nozzle of the spray gun exceeds the dynamic monitoring area, the control system receives a signal and controls the cylinder to start.

[0013] The advantages and positive effects of this utility model are as follows:

[0014] 1. This utility model realizes automatic monitoring and cleaning of material accumulation on the spray gun nozzle through a pre-set dynamic monitoring area. The whole process no longer requires human observation, monitoring and operation, which improves the automation level and cleaning efficiency of the equipment.

[0015] 2. This utility model uses a control system to control a lever drive assembly to move a cleaning lever, which can complete the cleaning of the nozzle accumulation at the top of the spray gun. The whole structure is simple and compact. The cylinder of the lever drive assembly is equipped with a protective cover. At the same time, the air supply pipe of the cylinder extends from the hollow support rod on either side of the bracket to the outside of the granulation tower. This can ensure that the lever drive assembly is not affected by dust or other factors inside the granulation tower, thereby ensuring the reliable operation of the lever drive assembly. Attached Figure Description

[0016] Figure 1 This is a schematic diagram illustrating the usage state of this utility model.

[0017] Figure 2 for Figure 1 A schematic diagram of the center lever drive assembly.

[0018] Figure 3 for Figure 2 Structural sectional view of the cylinder and support base.

[0019] Figure 4 for Figure 2 A in the enlarged view.

[0020] Among them, 1 is the granulation tower, 2 is the monitoring camera, 3 is the observation platform, 4 is the monitoring screen, 5 is the observation window, 6 is the spray gun, 601 is the nozzle, 7 is the cleaning lever, 8 is the cylinder, 801 is the support rod, 802 is the slider, 803 is the support base, 804 is the protective cover, 9 is the dynamic monitoring area, 10 is the discharge port, 11 is the feed pump, 12 is the slurry spray, and 13 is the stockpile. Detailed Implementation

[0021] The present invention will now be described in further detail with reference to the accompanying drawings.

[0022] like Figures 1-4 As shown, this utility model includes a granulation tower 1, a spray gun 6, a cleaning lever 7, a lever drive assembly, a monitoring camera 2, and a monitoring screen 4. The spray gun 6 is located within the granulation tower 1. The granulation tower 1 has a lever drive assembly on one inner wall and an observation window 5 on the other side. The front end of the lever drive assembly has a cleaning lever 7 that moves above the spray gun 6. The observation window 5 has a monitoring camera 2 connected to the monitoring screen 4 via a wiring connection. Figure 1 and Figure 4 As shown, when this utility model is in operation, the monitoring camera 2 monitors the condition of the upper end of the cleaning lever 7 in real time through the observation window 5, and displays it in real time through the monitoring screen 4, wherein... Figure 4As shown, the operator can set a dynamic monitoring area 9 through the control system. When the material 13 piled on the nozzle 601 at the top of the spray gun 6 exceeds the range of the dynamic monitoring area 9, the control system automatically triggers and starts the lever drive assembly to drive the cleaning lever 7 to move back and forth on the upper side of the nozzle 601 to clean the material 13 piled on the nozzle 601. The whole process no longer requires human observation, monitoring and operation, which improves the automation level and cleaning efficiency of the equipment.

[0023] like Figures 2-3 As shown, in this embodiment, the lever drive assembly includes a bracket and a cylinder 8. The rear end of the bracket is installed on the inner wall of the granulation tower 1, and the front end of the bracket is provided with a support seat 803. The cylinder 8 is mounted on the support seat 803. The rear end of the cleaning lever 7 is vertically fixed to the power shaft of the cylinder 8. The extension and retraction of the power shaft of the cylinder 8 drives the cleaning lever 7 to move and perform the cleaning operation. The cylinder 8 is controlled to start and stop by the control system.

[0024] like Figures 2-3 As shown, in this embodiment, a protective cover 804 is provided on the support base 803, and the cylinder 8 is disposed in the protective cover 804. The protective cover 804 has an opening on the side near the spray gun 6, and the cleaning lever 7 extends out from the opening. The protective cover 804 can prevent the powder and other materials formed in the granulation tower 1 from affecting the cylinder 8. In addition, the bracket includes support rods 801 on both sides, and the rear end of the support rod 801 is fixedly connected to the inner wall of the granulation tower 1, and the front end is fixedly connected to the corresponding end of the support base 803. The support rod 801 has a hollow structure, and the air supply line of the cylinder 8 can extend out from the inside of either support rod 801. This can prevent the powder and other materials in the granulation tower 1 from affecting the air supply line of the cylinder 8, thereby ensuring the reliable operation of the lever drive assembly.

[0025] like Figures 2-3 As shown, in this embodiment, the support base 803 is provided with a slide rail, and the rear end of the cleaning lever 7 is provided with a slider 802 that cooperates with the slide rail to achieve a sliding connection. This ensures that the cleaning lever 7 slides smoothly while maintaining a horizontal angle, thereby ensuring the moving height of the head end of the cleaning lever 7 and preventing the cleaning lever 7 from drooping or colliding with the barrel of the spray gun 6, causing it to deform or even be damaged. Additionally, as shown... Figure 1 As shown, since the diameter L of the granulation tower 1 is usually more than 3 meters, the present invention can also reasonably arrange the length of the support and the length of the cleaning lever 7 according to actual needs, so as to further ensure that the cleaning lever 7 can complete the cleaning work.

[0026] like Figure 1As shown, in this embodiment, an observation platform 3 is provided on one side of the granulation tower 1, and the observation platform 3 is located below the observation window 5 and at a height H greater than 3 meters above the ground. A monitoring screen 4 can be installed below the observation platform 3, allowing operators to directly observe the monitoring screen 4 from the ground and understand the status of the nozzle 601 at the upper end of the spray gun 6 inside the granulation tower 1. Additionally, this invention can also be used to manually control the cylinder 8 in the lever drive assembly according to actual needs. For example, the monitoring screen 4 can be a touchscreen with multiple control options for touch control. Furthermore, as... Figure 1 As shown, the feed pump 11 connected to the spray gun 6 can also be located below the observation platform 3. A staircase is provided on one side of the observation platform 3 for operators to climb onto the platform. The lower end of the granulation tower 1 is provided with a discharge port 10 for outputting the powder that has completed the process.

[0027] The working principle of this utility model is as follows:

[0028] like Figure 4 As shown, in the prior art, after the spray gun 6 sprays the slurry to form a slurry spray 12, the viscous slurry easily adheres to the area around the nozzle 601 of the spray gun 6, forming a pile 13. This can cause poor spray shape or even block the spray gun. Figure 1 As shown, since the diameter L of the entire granulation tower 1 is often more than 3 meters, in the prior art, workers usually need to use a stainless steel rod nearly 2 meters long to reach into the tower through the tower wall hatch to clean the material pile 13 at the nozzle 601.

[0029] And such Figures 1 to 3 As shown, this invention features a monitoring camera 2 outside the observation window 5 for real-time monitoring of the nozzle 601's position. When the detected material pile 13 exceeds the set dynamic monitoring area 9, the control system automatically activates the cylinder 8 in the lever drive assembly, driving the cleaning lever 7 to complete the cleaning of the material pile 13 on the nozzle 601. After the material pile 13 falls, the monitoring camera 2 sends a signal to the control system, which then drives the cleaning lever 7 to automatically return to its original position via the lever drive assembly. This invention achieves automatic monitoring and cleaning of the material pile 13 on the nozzle 601 through the pre-set dynamic monitoring area 9, eliminating the need for manual observation and operation throughout the process, thus improving the automation level and cleaning efficiency of the equipment.

[0030] Furthermore, this invention provides a protective cover 804 on the cylinder 8 of the lever drive assembly. Simultaneously, the air supply pipe of the cylinder 8 extends from the hollow support rod 801 on either side of the bracket to the outside of the granulation tower 1. This ensures that the lever drive assembly is not affected by dust or other factors inside the granulation tower 1, thereby ensuring that the cleaning lever 7 can be smoothly activated to clean the stockpile 13. Since the diameter L of the granulation tower 1 is typically over 3 meters, this invention can also reasonably arrange the length of the bracket and the length of the cleaning lever 7 according to actual needs to further ensure that the cleaning lever 7 can complete the cleaning work.

Claims

1. A system for monitoring and automatically cleaning nozzles of a spray gun in a resistive sheet granulation tower, characterized in that: The system includes a granulation tower (1), a spray gun (6), a cleaning lever (7), a lever drive assembly, a monitoring camera (2), and a monitoring screen (4). The spray gun (6) is located in the granulation tower (1). The granulation tower (1) has a lever drive assembly on one side of its inner wall and an observation window (5) on the other side. The lever drive assembly has a cleaning lever (7) that moves above the spray gun (6) at its front end. The observation window (5) has a monitoring camera (2) connected to the monitoring screen (4) via a line on its outer side. The lever drive assembly includes a bracket and a cylinder (8). The rear end of the bracket is installed on the inner wall of the granulation tower (1). The front end of the bracket has a support seat (803). The cylinder (8) is located on the support seat (803), and the cleaning lever (7) is driven to move by the cylinder (8).

2. The resistance sheet granulation tower spray gun nozzle monitoring and automatic cleaning system according to claim 1, characterized in that: The support base (803) is provided with a protective cover (804), and the cylinder (8) is located in the protective cover (804). The protective cover (804) has an opening on the side near the spray gun (6), and the cleaning lever (7) extends out from the opening.

3. The resistance sheet granulation tower spray gun nozzle monitoring and automatic cleaning system according to claim 2, characterized in that: The support includes support rods (801) on both sides, and the rear end of the support rod (801) is fixedly connected to the inner wall of the granulation tower (1), and the front end is fixedly connected to the corresponding end of the support seat (803). The support rod (801) is a hollow structure, and the air supply pipe of the cylinder (8) extends out from the inside of the support rod (801) on either side.

4. The resistance sheet granulation tower spray gun nozzle monitoring and automatic cleaning system according to claim 2, characterized in that: The support base (803) is provided with a slide rail, and the rear end of the cleaning lever (7) is provided with a slider (802) that cooperates with the slide rail.

5. The resistance sheet granulation tower spray gun nozzle monitoring and automatic cleaning system according to claim 1, characterized in that: The granulation tower (1) is provided with an observation platform (3) on one side, and the observation platform (3) is located below the observation window (5). The monitoring screen (4) is provided on the lower side of the observation platform (3).

6. The resistance sheet granulation tower spray gun nozzle monitoring and automatic cleaning system according to claim 1, characterized in that: The monitoring screen (4) is connected to the control system via a line, and a dynamic monitoring area (9) is set on the monitoring screen (4) by the control system. When the material (13) on the upper nozzle (601) of the spray gun (6) exceeds the dynamic monitoring area (9), the control system receives a signal and controls the cylinder (8) to start.

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