Regulating device for short-flame burner

Abstract

An adjustment device for a short-flame burner includes a base, a combustion cylinder, a telescopic cylinder, a gas pipe, a flame stabilizer, a push-pull rod, and an adjusting bolt. The telescopic cylinder is movable back and forth and positioned at the front of the combustion cylinder. The front end of the gas pipe extends into the combustion cylinder. The flame stabilizer is positioned at the front end of the gas pipe and includes a disc and a conical shell. The diameter of the conical shell gradually decreases from front to back, and the rear end of the conical shell extends into the telescopic cylinder. The disc covers the rear end of the conical shell. An ignition column protruding forward is located at the center of the front end of the disc, and an ignition hole communicating with the gas pipe is located at the center of the ignition column. The front end of the telescopic cylinder can be moved to the position at the front end of the flame stabilizer. The adjusting bolt includes a screw and a sleeve. In this invention, the conical flame stabilizer blocks the front end of the telescopic cylinder, shortening the outer flame length. By moving the push-pull rod to change the gap between the flame stabilizer and the telescopic cylinder, the flame shape can be controlled, allowing the burner to quickly adapt to furnaces of different shapes.

Description

Technical Field

[0001] This utility model relates to the field of burners, and in particular to an adjustment device for a short flame burner. Background Technology

[0002] Ordinary burners produce long flames that continuously scorch the inner walls of the furnace, causing damage. Different boilers have different furnace dimensions; a flame of the same length may be too long for a shorter furnace, also potentially damaging the furnace walls. Utility Model Content

[0003] The purpose of this invention is to overcome the above-mentioned shortcomings and provide an adjustment device for a short flame burner with a short flame length that can be adjusted.

[0004] To achieve the above objectives, the technical solution of this utility model is: an adjustment device for a short flame burner, comprising a cylinder base, a combustion cylinder, a telescopic cylinder, a gas pipe, a flame stabilizer, a push-pull rod, and an adjustment bolt;

[0005] An air cavity is provided inside the cylinder base. The rear end of the combustion cylinder is fixed to the cylinder base and communicates with the air cavity, while the front end of the combustion cylinder extends outward.

[0006] The telescopic cylinder can move back and forth and is located at the front of the combustion cylinder. When the telescopic cylinder moves forward, it can extend from the front end of the combustion cylinder.

[0007] The front end of the gas pipe extends into the combustion chamber, and the rear end of the gas pipe is connected to a gas supply pipe; the flame stabilizer is located at the front end of the gas pipe, and the front end of the flame stabilizer is located in front of the combustion chamber; the gas pipe has an exhaust port behind the flame stabilizer.

[0008] The flame stabilizer includes a disc and a conical shell. The diameter of the conical shell gradually decreases from front to back. The rear end of the conical shell extends into the telescopic cylinder. The disc covers the rear end of the conical shell. The front end of the disc has a forward-protruding ignition column in the middle. The ignition column has an ignition hole in the middle that communicates with the gas pipe. The front end of the telescopic cylinder can be moved to the front end position of the flame stabilizer.

[0009] The adjusting bolt includes a screw and a sleeve. One end of the screw is fixed to the sleeve seat, and the other end of the screw extends into the sleeve and is threaded into the sleeve. The outer wall of the sleeve is provided with an annular groove.

[0010] One end of the push-pull rod extends into the combustion cylinder and connects to the telescopic cylinder, while the other end of the push-pull rod can be movably fitted into the annular groove of the sleeve.

[0011] The mixture of fuel gas and air, forming a mixed airflow, is blown out through the gap between the flame stabilizer and the telescopic cylinder, where it ignites to form an outer flame. Constrained by the conical flame stabilizer and the telescopic cylinder, the mixed airflow cannot be blown directly forward; instead, it expands outward along the conical surface of the flame stabilizer, shortening the length of the outer flame. An inner flame is ejected forward from the ignition hole in the center of the flame stabilizer. This inner flame drives the airflow in front of the flame stabilizer forward, pulling the airflow on the outer side of the flame stabilizer towards the center. The outer flame, after expanding outward, is then pulled towards the center by the airflow, resulting in a more concentrated flame and a short flame shape that does not scorch the inner wall of the furnace.

[0012] When the burner is used in furnaces of different sizes or when the flow rate of the mixed gas changes, rotating the sleeve moves the push-pull rod, which in turn moves the telescopic cylinder inside the combustion chamber. This changes the gap between the flame stabilizer and the telescopic cylinder, causing the velocity and direction of the mixed gas to change simultaneously, and thus altering the shape of the outer flame. Adjusting the flame shape allows the burner to maintain a consistently short flame configuration.

[0013] Preferably, the adjusting bolt also includes a rocker arm, one end of which is fixed to the sleeve, and the other end of which extends out of the sleeve base. Pushing or pulling the rocker arm with a tool causes the sleeve to rotate, adjusting the flame size.

[0014] Preferably, the front end of the gas pipe has several vent holes arranged in a ring around its outer periphery, and at least three of the vent holes are equipped with guide pipes. One end of the guide pipe is connected to the vent hole, and the other end extends forward and outward to the inner wall of the telescopic cylinder, with the other end facing the gap between the telescopic cylinder and the flame stabilizer. The rear end of the telescopic cylinder has an outwardly protruding ring. The number of vent holes exceeds three, and multiple guide pipes are evenly distributed in a ring around the outer periphery of the gas pipe. When a small flame is needed, the guide pipes can guide the gas in the gas pipe to the gap between the flame stabilizer and the telescopic cylinder, maintaining the stability of the burner flame. Simultaneously, the multiple guide pipes can support the inner side of the telescopic cylinder, ensuring that the gap between the flame stabilizer and the telescopic cylinder remains stable at all positions, preventing one side from being larger than the other.

[0015] Preferably, a protrusion is provided on the outer side of the other end of the drainage tube. The outer end of the protrusion is arc-shaped, and the outermost end of the protrusion abuts against the inner wall of the telescopic cylinder. The arc-shaped protrusion can reduce the resistance of the telescopic cylinder's movement.

[0016] By adopting the above technical solution, the beneficial effects of this utility model are as follows: The conical flame stabilizing disc of this utility model blocks the front end of the telescopic cylinder, preventing the mixture of gas and air from blowing directly forward. Instead, it expands outward along the conical surface of the flame stabilizing disc, shortening the length of the outer flame. The inner flame is ejected from the center of the flame stabilizing disc, pulling the outwardly expanding outer flame towards the center, resulting in a more concentrated overall flame that does not scorch the inner wall of the furnace. By moving the push-pull rod to change the gap between the flame stabilizing disc and the telescopic cylinder, the flame shape can be controlled, allowing the burner to quickly adapt to furnaces of different shapes. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of this utility model;

[0018] Figure 2 This is a partial structural diagram of the front end of the present invention;

[0019] Figure 3 This is a partial structural diagram of the rear part of this utility model.

[0020] Explanation of key figure labels:

[0021] 1. Cylinder base; 2. Combustion cylinder; 3. Telescopic cylinder; 31. Convex ring; 4. Flame stabilizer plate; 41. Conical shell; 42. Disc; 43. Ignition hole; 5. Gas pipe; 51. Exhaust hole; 52. Drain pipe; 53. Protrusion; 6. Push-pull rod; 7. Adjusting bolt; 71. Screw; 72. Sleeve; 721. Ring groove; 73. Rocker arm. Detailed Implementation

[0022] The present invention will be further described below with reference to the accompanying drawings and specific embodiments.

[0023] like Figures 1-3 As shown, the present invention provides an adjustment device for a short flame burner, comprising a cylinder base 1, a combustion cylinder 2, a telescopic cylinder 3, a gas pipe 5, a flame stabilizer 4, a push-pull rod 6, and an adjustment bolt 7.

[0024] An air cavity is provided inside the cylinder base 1. The rear end of the combustion cylinder is fixed to the cylinder base and communicates with the air cavity, while the front end of the combustion cylinder 2 extends outwards. A telescopic cylinder 3 is movable back and forth and is located at the front of the combustion cylinder 2. The telescopic cylinder 3 can extend outwards from the front end of the combustion cylinder 2 when it moves forward. The rear end of the telescopic cylinder 3 has an outwardly protruding ring that extends into the inner wall of the combustion cylinder to seal the gap between the rear end of the telescopic cylinder and the combustion cylinder. The air cavity can be connected to a blower. Air from the blower is blown into the combustion cylinder through the air cavity and then into the telescopic cylinder, exiting from the front end of the telescopic cylinder.

[0025] The front end of the gas pipe 5 extends into the combustion cylinder 2, and the rear end of the gas pipe 5 is connected to a gas supply pipe. The flame stabilizer 4 is located at the front end of the gas pipe 5, and the front end of the flame stabilizer 4 is located in front of the combustion cylinder 2; the gas pipe 5 has an exhaust port 51 behind the flame stabilizer 4.

[0026] The flame stabilizer 4 includes a disc 42 and a conical shell 41. The diameter of the conical shell 41 gradually decreases from front to back. The rear end of the conical shell 41 extends into the telescopic cylinder 3. The disc 42 covers the rear end of the conical shell 41. The front end of the disc 42 is provided with a forward-protruding ignition column. The middle of the ignition column is provided with an ignition hole 43 that communicates with the gas pipe. The front end of the telescopic cylinder 3 can be moved to the front end position of the flame stabilizer 41.

[0027] Natural gas is supplied to gas pipe 5 through the gas supply pipe. The natural gas is ejected from exhaust port 51, mixes with air inside the telescopic cylinder, and is ejected from the gap between the flame stabilizer and the front end of the telescopic cylinder to form an outer flame. Natural gas is also ejected forward from ignition port 43 to form an inner flame. Gas pipe 5 includes a first pipe and a second pipe; the first pipe connects to the ignition port, and the second pipe connects to the exhaust port.

[0028] The gas pipe 5 has six exhaust holes 51 arranged in a ring around its front end. Three of the exhaust holes are equipped with guide pipes 52, which are evenly distributed in a ring around the outer periphery of the gas pipe 5. One end of the guide pipe 52 is connected to the exhaust hole 51, and the other end of the guide pipe 52 extends forward and outward to the space between the telescopic cylinder 3 and the conical shell 41, corresponding to the gap between the telescopic cylinder 3 and the flame stabilizer 4. A protrusion 53 is provided on the outer side of the other end of the guide pipe 52. The outer end of the protrusion 53 is arc-shaped, and the outermost end of the protrusion 53 abuts against the inner wall of the telescopic cylinder 3.

[0029] like Figure 3 As shown, the adjusting bolt 7 includes a screw 71, a sleeve 72, and a rocker arm 73. One end of the screw 71 is fixed to the cylinder seat 1, and the other end of the screw 71 extends into the sleeve 72 and is threaded into the sleeve 72. The outer wall of the sleeve 72 is provided with an annular groove 721. The front end of the push-pull rod 6 extends into the combustion cylinder 2 and connects to the telescopic cylinder 3. The rear end of the push-pull rod 6 can be movably fitted over the annular groove 721 of the sleeve. One end of the rocker arm 73 is fixed to the sleeve 72, and the other end of the rocker arm extends out of the cylinder seat 1. Rotating the rocker arm 73 can drive the sleeve 72 to rotate, thereby pushing and pulling the push-pull rod 6 to move, which in turn causes the telescopic cylinder 3 to move, and the gap between the front end of the telescopic cylinder 3 and the flame stabilizer plate also changes.

[0030] When the burner is in use, the mixture of gas and air forms a gas flow that is blown out from the gap between the flame stabilizer and the telescopic cylinder, and then combusts to form an outer flame. Constrained by the conical flame stabilizer and the telescopic cylinder, the gas flow cannot be blown directly forward; it can only expand outward along the conical surface of the flame stabilizer, shortening the length of the outer flame. The gas is ejected forward from the ignition hole in the center of the flame stabilizer, creating an inner flame. This inner flame drives the airflow in front of the flame stabilizer forward, pulling the airflow outside the flame stabilizer towards its center. The outer flame expands outward and is then pulled towards the center by the airflow, resulting in a more concentrated flame that does not scorch the inner wall of the furnace. Rotating the sleeve moves the push-pull rod, changing the gap between the flame stabilizer and the telescopic cylinder, and simultaneously changing the velocity and direction of the gas flow, thus altering the shape of the outer flame to suit different furnace shapes.

[0031] The above description is merely a preferred embodiment of the present utility model and does not limit the scope of implementation of the present utility model. All equivalent changes and modifications made in accordance with the scope of the patent application of the present utility model shall still fall within the scope of the present utility model.

Claims

1. A regulating device for a short flame burner, characterized in that, Includes cylinder base, combustion cylinder, telescopic cylinder, gas pipe, flame stabilizer plate, push-pull rod, and adjusting bolt; An air cavity is provided inside the cylinder base. The rear end of the combustion cylinder is fixed to the cylinder base and communicates with the air cavity, while the front end of the combustion cylinder extends outward. The telescopic cylinder can move back and forth and is located at the front of the combustion cylinder. When the telescopic cylinder moves forward, it can extend from the front end of the combustion cylinder. The front end of the gas pipe extends into the combustion chamber, and the rear end of the gas pipe is connected to a gas supply pipe; the flame stabilizer is located at the front end of the gas pipe, and the front end of the flame stabilizer is located in front of the combustion chamber; the gas pipe has an exhaust port behind the flame stabilizer. The flame stabilizer includes a disc and a conical shell. The diameter of the conical shell gradually decreases from front to back. The rear end of the conical shell extends into the telescopic cylinder. The disc covers the rear end of the conical shell. The front end of the disc has a forward-protruding ignition column in the middle. The ignition column has an ignition hole in the middle that communicates with the gas pipe. The front end of the telescopic cylinder can be moved to the front end position of the flame stabilizer. The adjusting bolt includes a screw and a sleeve. One end of the screw is fixed to the sleeve seat, and the other end of the screw extends into the sleeve and is threaded into the sleeve. The outer wall of the sleeve is provided with an annular groove. One end of the push-pull rod extends into the combustion cylinder and connects to the telescopic cylinder, while the other end of the push-pull rod can be movably fitted into the annular groove of the sleeve.

2. A short flame burner regulating device according to claim 1, characterized in that The adjusting bolt also includes a rocker arm, one end of which is fixed to the sleeve, and the other end of which extends out of the sleeve seat.

3. A short flame burner regulating device according to claim 1, characterized in that The front end of the gas pipe is provided with several exhaust holes in a ring around its outer periphery. At least three exhaust holes are provided with a guide pipe. One end of the guide pipe is connected to the exhaust hole, and the other end of the guide pipe extends forward and outward to the inner wall of the telescopic cylinder. The other end of the guide pipe is opposite the gap between the telescopic cylinder and the flame stabilizer plate. The rear end of the telescopic cylinder is provided with an outward protruding ring.

4. The adjusting device for a short-flame burner according to claim 3, characterized in that, The other end of the drainage tube has a protrusion on the outside, the outer end of which is arc-shaped, and the outermost end of the protrusion abuts against the inner wall of the telescopic tube.

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