Inlet door structure of boiler tiny-oil ignition air heater

Abstract

The utility model discloses an inlet door structure of a tiny-oil ignition air heater of a boiler, and relates to the technical field of boiler pipelines, in particular to the inlet door structure of the tiny-oil ignition air heater of the boiler. Comprising a door frame, an inserting plate door, a support, an air cylinder, a front baffle, a rear baffle, a purging pipeline and the like. Sliding grooves are formed in the left inner side and the right inner side of the door frame. The inserting plate door is slidably installed through the sliding grooves to control opening and closing of the air heater inlet. And a piston rod of the cylinder is connected with the upper end of the slide plate gate to realize automatic control. A front baffle and a rear baffle are arranged in front of and behind the lower frame of the door frame, and the blowing pipeline at the bottom of one side penetrates to the middle of the front baffle and the rear baffle. According to the utility model, the blowing pipeline is additionally arranged, so that the ash deposition resistance can be reduced by blowing before switching operation, and uncompleted jamming is avoided; the air cylinder is moved to the upper portion, the top is connected with the insertion plate door, the insertion plate door is evenly stressed, and inclination and related problems are prevented.

Description

Technical Field

[0001] The utility model relates to the technical field of boiler pipelines, in particular to an inlet door structure of a boiler micro-oil ignition air heater. Background Art

[0002] In industrial production, boiler micro-oil ignition primary air heater plays a key role in ensuring the smooth progress of the production process. However, in actual application, the inlet door of the boiler micro-oil ignition primary air heater is facing many problems.

[0003] The design of the entrance door track for traditional furnace micro-oil ignition primary air heaters often fails to fully account for the impact of dust. In actual working environments, due to the high concentration of dust and other impurities in the surrounding air, the entrance door track is prone to dust accumulation. Over time, this accumulation becomes increasingly severe, resulting in a significant increase in resistance during opening and closing, leading to jamming and non-alignment, seriously affecting the normal operation and efficiency of the equipment.

[0004] At the same time, the design of the bypass door for the micro-oil ignition primary air heater also has certain flaws. The way the cylinder piston rod is connected to the side of the plug-in door makes it extremely easy for the plug-in door to tilt in one direction during opening and closing. This one-way tilt causes the other side of the plug-in door to rub against the track, further increasing the resistance during operation. Long-term use can easily cause problems such as piston rod bending, scratches, and burrs, which in turn can lead to seal wear, loss, and leakage. This not only affects the performance and stability of the equipment, but also increases maintenance costs and safety risks. To address these issues, it is imperative to modify the entrance door of the micro-oil ignition primary air heater. Utility Model Content

[0005] The purpose of the utility model is to provide an inlet door structure of a boiler micro-oil ignition heater. By adding a purge pipe, which is opened for purge before the switch is operated, the dust accumulated on the track is blown clean, the resistance of the dust accumulation is reduced, and the cylinder is moved from the side of the plug-in door to the top, and the connection between the plug-in door and the cylinder piston rod is changed from the side to the top. When the plug-in door is in action, the force is evenly applied to prevent tilting to solve the above problems.

[0006] To achieve the above objectives, the present invention provides the following technical solutions:

[0007] A boiler micro-oil ignition air heater entrance door includes a door frame, which is the main frame structure of the entire entrance door and plays the role of supporting and fixing other components. The door frame is provided with slide grooves on the left and right inner sides, and a plug-in door is slidably installed in the slide grooves. The design of the slide grooves enables the plug-in door to slide open and close smoothly. The function of the plug-in door is to control the opening and closing of the heater entrance and realize the regulation of the warm air flow. The cylinder is fixedly installed upside down on the top of the bracket, and the top of the cylinder piston rod is fixedly connected to the upper end of the plug-in door. The bracket provides a stable installation position for the cylinder, and the cylinder drives the lifting and lowering of the plug-in door through the telescopic movement of the piston rod to realize automatic control.

[0008] The door frame lower frame is equipped with front and rear baffles, respectively. A purge duct is located at the bottom of one side of the door frame and extends between the front and rear baffles. The front and rear baffles prevent dust and debris from entering the heater, while the purge duct allows for regular purge operations to remove dust and other impurities accumulated on the front and rear baffles, keeping the equipment clean. The front baffles of the front and rear baffles have multiple rows of dust holes. The arrangement of the dust holes facilitates the smooth discharge of dust during the purge process.

[0009] The gate has curved grooves on both sides, and the sliding grooves on the left and right sides of the door frame are equipped with curved protrusions corresponding to the curved grooves. The curved grooves and the curved protrusions are slidably connected. This design of the curved grooves and protrusions can make the gate more stable during sliding, reduce shaking and friction, and improve the service life and operating accuracy of the device.

[0010] The door frame is provided with sealing strips around its perimeter. When the flap door is closed, the sealing strips are tightly fitted to prevent hot air from leaking out. The sealing strips can effectively prevent hot air from the heater from leaking out through the gap between the door frame and the flap door, thereby improving energy efficiency and reducing the impact of heat on the surrounding environment.

[0011] A filter is installed at the inlet of the purge pipe to prevent dust from entering the purge pipe. The filter can filter out large particles of dust and impurities in the air, preventing them from entering the purge pipe, clogging the pipe or damaging the purge equipment.

[0012] An indicator light is provided on the outside of the door frame. When the gate is open or closed, the indicator light will light up and flash accordingly, allowing the operator to intuitively understand the status of the device. The setting of the indicator light allows the operator to clearly understand the status of the gate from a distance, improving the safety and convenience of operation.

[0013] The connection between the piston rod and the flapper door is fixed with high-strength bolts to ensure a secure and reliable connection. The high-strength bolts can withstand large tensile and shear forces, ensuring a stable connection between the cylinder and the flapper door, and will not loosen or fall off during long-term use.

[0014] Compared with the prior art, the beneficial effects of the present invention are:

[0015] By adding a purge line and opening it for purge before opening and closing operations, dust accumulation on the track can be cleaned. This significantly reduces the resistance caused by dust accumulation and effectively avoids jamming and misalignment during opening and closing due to heavy dust accumulation. This makes the opening and closing of the entrance door smoother, improving the operating efficiency and reliability of the equipment.

[0016] The cylinder was moved from the side of the gate to the top, and the gate-to-cylinder piston rod connection was changed from a side connection to a top connection. This improvement ensures uniform force distribution during operation, preventing tilting. It also eliminates problems such as piston rod bending, scratches, and burrs caused by unilateral tilt of the gate against the rail, and reduces the risk of seal wear, loss, and leakage. This improves the stability and sealing of the equipment, extends its service life, and reduces maintenance costs.

[0017] The coordinated design of curved grooves and protrusions makes the sliding door more stable, reduces shaking and friction, and further improves operational precision. Sealing strips around the door frame effectively prevent hot air leakage, improving energy efficiency and reducing the impact of heat on the surrounding environment. A filter at the purge duct inlet prevents large particles of dust and impurities from entering the duct, preventing blockage and equipment damage. Indicator lights on the outside of the door frame provide operators with intuitive information about the equipment status, enhancing operational safety and convenience. High-strength bolts secure the connection between the piston rod and the door, ensuring a secure and reliable connection and increasing the stability of the equipment over long-term use. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a three-dimensional diagram of the inlet door structure of a boiler micro-oil ignition heater in a closed state;

[0019] Figure 2 This is a three-dimensional diagram of the structure of the boiler micro-oil ignition heater in the open state;

[0020] Figure: 1. Door frame; 2. Sliding door; 3. Bracket; 4. Cylinder; 5. Front and rear baffles; 51. Dust outlet; 6. Purge pipe DETAILED DESCRIPTION

[0021] The technical solutions in the embodiments of the present invention will be fully described below in conjunction with the accompanying drawings in the embodiments of the present invention.

[0022] like Figure 1-2 As shown, a boiler micro-oil ignition heater entrance door includes a door frame 1, characterized in that the door frame 1 is provided with slide grooves on the left and right inner sides, and a plug-in door 2 is slidably installed in the slide grooves, and a bracket 3 is fixedly installed on the upper end of the door frame 1, and a cylinder 4 is fixedly installed upside down on the top of the bracket 3, and the top of the piston rod of the cylinder 4 is fixedly connected to the upper end of the plug-in door 2; the front and rear baffles 5 are respectively provided on the front and rear of the lower frame of the door frame 1, and a purge pipe 6 is provided at the bottom of one side of the door frame 1, and the purge pipe 6 passes through to the middle of the front and rear baffles 5.

[0023] The front baffle array of the front and rear baffles 5 has dust holes 51, and the dust holes 51 are arranged in multiple rows.

[0024] Arc grooves are provided on both sides of the plug-in door 2, and arc protrusions corresponding to the arc grooves are provided in the sliding grooves provided on the left and right sides of the door frame 1, and the arc grooves and the arc protrusions are matched and slidably connected.

[0025] The door frame 1 is provided with sealing strips around its periphery. When the inserting door is closed, the sealing strips are tightly fitted to prevent hot air from leaking.

[0026] A filter is installed at the inlet of the purge pipe 6 to prevent dust from entering the purge pipe 6.

[0027] An indicator light is provided on the outside of the door frame 1. When the plug-in door 2 is in the open or closed state, the indicator light will light up and flash accordingly, making it convenient for the operator to intuitively understand the status of the equipment.

[0028] The connection between the piston rod of the cylinder 4 and the plug-in door is fixed with high-strength bolts to ensure a firm and reliable connection.

[0029] First, install the door frame 1, ensuring that it is accurately positioned and firmly fixed in the predetermined position. Machine a slide groove on the left and right inner sides of the door frame 1, and install the plug-in door 2 in the slide groove. The arc-shaped grooves on both sides of the plug-in door 2 cooperate with the arc-shaped protrusions in the left and right slide grooves of the door frame 1, so that the plug-in door 2 can slide smoothly in the slide groove. Next, install the bracket 3 on the upper end of the door frame 1, fix the cylinder 4 upside down on the top of the bracket 3, and fix the top of the piston rod of the cylinder 4 to the upper end of the plug-in door 2. Use high-strength bolts to fix the connection to ensure that the connection is firm and reliable. Then, install the front and rear baffles 5 on the front and rear of the lower frame of the door frame 1, and machine multiple dust discharge holes 51 on the front baffle. Install a purge duct 6 at the bottom of one side of the door frame 1, so that it passes through the middle of the front and rear baffles 5. Install a filter at the entrance of the purge duct 6 to prevent dust from entering the purge duct 6. Finally, install an indicator light on the outside of the door frame 1. When the plug-in door 2 is in the open or closed state, the indicator light will light up and flash accordingly, making it easy for the operator to intuitively understand the status of the equipment. During use, when the entrance door needs to be opened or closed, start the cylinder 4, and the piston rod of the cylinder 4 drives the plug-in door 2 to slide in the slide groove. The arc-shaped groove of the plug-in door 2 cooperates with the arc-shaped protrusion of the door frame 1 to ensure the stability of sliding. When the plug-in door is closed, the sealing strips around the door frame 1 fit tightly to prevent hot air leakage. Before the switch operation, the purge duct 6 can be opened to blow away the dust accumulated on the track to reduce the resistance of dust accumulation. Dust is discharged through the dust outlet hole 51 of the front baffle, and the filter screen prevents dust from entering the purge duct 6. The operator can know the status of the plug-in door 2 at any time through the indicator light on the outside.

Claims

1. A boiler micro-oil ignition heater inlet door structure, comprising a door frame (1), characterized in that: The door frame (1) is provided with a slide groove on the left and right inner sides, and a plug-in door (2) is slidably installed in the slide groove. A bracket (3) is fixedly installed on the upper end of the door frame (1), and a cylinder (4) is fixedly installed upside down on the top of the bracket (3). The top of the piston rod of the cylinder (4) is fixedly connected to the upper end of the plug-in door (2); the front and rear baffles (5) are respectively provided on the front and rear of the lower frame of the door frame (1), and a purge pipe (6) is provided at the bottom of one side of the door frame (1), and the purge pipe (6) passes through the middle of the front and rear baffles (5).

2. The inlet door structure of a boiler micro-oil ignition air heater according to claim 1, characterized in that: The front baffle array of the front and rear baffles (5) has dust outlet holes (51), and the dust outlet holes (51) are arranged in multiple rows.

3. The inlet door structure of a boiler micro-oil ignition air heater according to claim 1, characterized in that: Arc grooves are provided on both sides of the plug-in door (2), and arc protrusions corresponding to the arc grooves are provided in the sliding grooves provided on the left and right sides of the door frame (1), and the arc grooves and the arc protrusions are matched and slidably connected.

4. The inlet door structure of a boiler micro-oil ignition air heater according to claim 1, characterized in that: Sealing strips are provided around the door frame (1). When the plug-in door is closed, the sealing strips are tightly fitted to prevent hot air from leaking.

5. The inlet door structure of a boiler micro-oil ignition air heater according to claim 1, characterized in that: A filter is installed at the inlet of the purge pipe (6) to prevent dust from entering the purge pipe (6).

6. The inlet door structure of a boiler micro-oil ignition air heater according to claim 1, characterized in that: An indicator light is provided on the outside of the door frame (1), and when the plug-in door (2) is in an open or closed state, the indicator light will light up and flash accordingly.

7. The inlet door structure of a boiler micro-oil ignition air heater according to claim 1, characterized in that: The connection portion between the piston rod of the cylinder (4) and the plug-in door is fixed with high-strength bolts.

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