Fuel gas efficient power energy-saving spray gun

Abstract

The utility model discloses a fuel gas efficient power energy-saving spray gun which comprises a spray gun shell, a fuel gas guide pipe, a fuel gas spray head, a burner and an air pressurization assembly. The rear end of the spray gun shell is further provided with a pressurizing cavity, and the pressurizing cavity communicates with the inner cavity. The air pressurization assembly is arranged in the pressurization cavity and comprises a pressurization impeller, a rotating shaft, a bearing, a motor and a heat dissipation impeller. The motor drives the rotating shaft to rotate and the pressurizing impeller to rotate, so that air and airflow in the pressurizing cavity can be pressurized, the airflow passes through the inner cavity of the spray gun shell at a high speed and is sprayed out from the front side, and the spraying stroke of the airflow is increased. According to the efficient power energy-saving gas spray gun, gas and air can be efficiently mixed, and the combustion efficiency is improved; the spraying speed is increased, the flame length is increased, and the operation stroke is increased; high-temperature gas forms stirring, so that the workpiece is uniformly heated; the energy consumption is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of gas combustion equipment, in particular to a gas high-efficiency power energy-saving spray gun. Background Art

[0002] Existing gas spray guns used in roller kilns, tunnel kilns, and other furnaces suffer from problems such as a limited adjustable spray speed range, which can easily lead to large temperature differences and low heat absorption efficiency in the product. This results in low efficiency and energy waste. Furthermore, some spray guns have illogical structural designs and are unable to adapt to the combustion requirements under different operating conditions. For example, in ceramic kilns and industrial kilns, parallel spray guns are required to spray at high speed, releasing high-speed, high-temperature gas to create a stirring effect, which can achieve more uniform heating of the workpiece within the furnace and improve the product's heat absorption efficiency. However, the spray guns currently available on the market do not meet these requirements.

[0003] Most of the combustion-supporting air used in gas spray guns on the market has no additional external power to pressurize it to spray out at high speed, resulting in a fixed stroke of the combustion-supporting air and gas after they are sprayed out from the burner. The operating stroke of the spray gun cannot be adjusted, resulting in poor stirring of the temperature atmosphere in the furnace, low heat absorption efficiency of the product, and large temperature difference. Utility Model Content

[0004] The purpose of the utility model is to provide a gas-fired high-efficiency power energy-saving spray gun, which has a simple and reasonable structure and stable and reliable operation; can efficiently mix gas and air to improve combustion efficiency; increase the injection speed, increase the operating stroke, increase the flame adjustability, and reduce energy consumption; high-temperature gas forms a temperature atmosphere for stirring, so that the workpiece is heated evenly, the heat absorption efficiency is high, and the temperature loss is reduced, thereby reducing energy consumption.

[0005] In order to solve the above technical problems, the technical solution of the utility model is:

[0006] A gas-fired high-efficiency power energy-saving spray gun, comprising a spray gun housing, a gas conduit, a gas nozzle, a burner, and an air pressurizing component;

[0007] The spray gun housing is a cylindrical housing with an open front end and an inner cavity in the middle, and a bearing mounting seat is provided at the rear end;

[0008] The rear end of the spray gun housing is also provided with a pressurizing chamber, which is communicated with the inner cavity;

[0009] The air pressurization assembly is located within the boost chamber and includes a boost impeller, a rotating shaft, bearings, a motor, and a heat dissipation impeller. The motor is fixed to the rear end of the spray gun housing, with its output shaft connected to the rotating shaft. The rotating shaft is sheathed with a bearing, which is located within a bearing mounting seat. The front end of the rotating shaft is sheathed with the boost impeller, while the rear end is sheathed with the heat dissipation impeller.

[0010] The motor drives the shaft and the boost impeller to rotate, thereby pressurizing the air and airflow within the boost chamber, forcing the airflow to pass through the inner cavity of the spray gun housing at high speed and be ejected from the front, thereby increasing the airflow's ejection distance. The heat dissipation impeller cools the motor, and a filter is installed on the outside of the heat dissipation impeller to isolate debris.

[0011] An air inlet is provided on one side of the pressurization chamber.

[0012] The gas conduit is a pipe body with a guide cavity in the middle. It is arranged in the middle of the spray gun housing, with its tail end connected to the gas input pipe and its front end connected to the gas nozzle.

[0013] The burner is disc-shaped and is installed at the front opening (gas outlet) of the spray gun housing to fully mix the gas and air;

[0014] The burner is provided with a plurality of gas outlet holes 1, which pass through the front and rear end surfaces of the burner (obliquely pass through); the plurality of gas outlet holes 1 are arranged in a ring around the center of the burner.

[0015] A mounting hole is provided in the middle of the burner, and the gas nozzle is arranged in the mounting hole;

[0016] The gas nozzle is provided with a plurality of gas outlet holes 2, and the plurality of gas outlet holes are radially arranged at the front end of the gas nozzle.

[0017] The burner has a plurality of oblique air cavities arranged on the annular outer wall thereof in a spirally inclined ring. The air ejected by the spiral rotation wraps around the outside of the gas, and the air ejected from the gas outlet hole cross-mixes with the gas.

[0018] Preferably, to facilitate product assembly, the spray gun housing includes a front shell and a rear shell, and the front shell and the rear shell are connected by threaded connection, welding, snap connection, etc.

[0019] Optionally, the rotating shaft and the motor output shaft are integrally formed.

[0020] Beneficial effects of the utility model:

[0021] Its structure is simple and reasonable, and its operation is stable and reliable. It can efficiently mix gas and air to improve combustion efficiency; increase the injection speed, increase the flame length, and increase the working stroke; by adjusting the gas injection speed, the high-temperature gas in the furnace is stirred, so that the workpiece is heated evenly, the heat absorption efficiency is increased, the temperature loss is reduced, and the energy consumption is reduced. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 This is a structural diagram of a gas-fired high-efficiency power energy-saving spray gun of the utility model;

[0023] Figure 2This is a cross-sectional view of a gas-fired high-efficiency power energy-saving spray gun of the present utility model;

[0024] Figure 3 This is a schematic structural diagram of the gas nozzle and burner of the present utility model. DETAILED DESCRIPTION

[0025] The following further describes specific embodiments of the present invention in conjunction with the accompanying drawings. It should be noted that the descriptions of these embodiments are intended to aid understanding of the present invention and do not constitute limitations on the present invention. Furthermore, the technical features involved in the various embodiments of the present invention described below may be combined with one another as long as they do not conflict with one another.

[0026] like Figure 1-3 As shown, a gas-fired high-efficiency power energy-saving spray gun includes a spray gun housing 1, a gas conduit 2, a gas nozzle 3, a burner 4, and an air pressurizing component 5;

[0027] The spray gun housing 1 is a cylindrical housing with an open front end and an inner cavity 11 in the middle, and a bearing mounting seat 6 is provided at the rear end.

[0028] The rear end of the spray gun housing 1 is further provided with a boost chamber 7, which is communicated with the inner chamber 11;

[0029] The air pressurizing assembly 5 is disposed within the pressurizing chamber 7 and includes a pressurizing impeller 51, a rotating shaft 52, a bearing 53, a motor 54, and a heat dissipating impeller 55. The motor 54 is fixed to the rear end of the spray gun housing 1, with its output shaft connected to the rotating shaft 52. The outer wall of the rotating shaft 52 is sheathed with a bearing 53, which is located within a bearing mounting seat 6. The outer wall of the front end of the rotating shaft 52 is sheathed with the pressurizing impeller 51, and the outer wall of the rear end of the rotating shaft 52 is sheathed with the heat dissipating impeller 55.

[0030] The motor 54 rotates the shaft 52 and the boost impeller 51, thereby pressurizing the air and airflow within the boost chamber 7. This causes the airflow to pass through the inner cavity 11 of the spray gun housing 1 at high speed and be ejected from the front, thereby increasing the airflow's ejection distance. The heat dissipation impeller 55 cools the motor 54. A filter 56 is provided on the outside of the heat dissipation impeller 55 to isolate it from foreign matter.

[0031] An air inlet 71 is provided on one side of the boost chamber 7 .

[0032] The gas conduit 2 is a pipe body with a guide cavity 21 in the middle. It is arranged in the middle of the spray gun housing 1, with its tail end connected to the gas input pipe 22 and its front end connected to the gas nozzle 3.

[0033] The burner 4 is disc-shaped and is mounted on the front opening (gas outlet) of the spray gun housing 1 to fully mix the gas and air.

[0034] The burner 4 is provided with a plurality of gas outlet holes 41 , which pass through the front and rear end surfaces of the burner 4 (obliquely pass through); the plurality of gas outlet holes 41 are arranged in a ring around the center of the burner 4 .

[0035] The burner 4 is provided with a mounting hole 42 in the middle thereof, and the gas nozzle 3 is arranged in the mounting hole 42;

[0036] The gas nozzle 3 is provided with a plurality of gas outlet holes 2 31 , which are radially arranged at the front end of the gas nozzle 3 .

[0037] The burner 4 has a plurality of oblique air cavities 43 arranged on the annular outer wall thereof in a spirally inclined ring. The air ejected by the spiral rotation wraps around the outside of the gas, and the air ejected from the gas outlet hole cross-mixes with the gas.

[0038] Preferably, to facilitate product assembly, the spray gun housing 1 includes a front shell 12 and a rear shell 13, and the front shell 12 and the rear shell 13 are connected by threaded connection, welding, snap connection, etc.

[0039] The embodiments of the present invention are described in detail above with reference to the accompanying drawings, but the present invention is not limited to the described embodiments. It is apparent to those skilled in the art that various changes, modifications, substitutions, and variations to these embodiments may be made without departing from the principles and spirit of the present invention, and the changes still fall within the scope of protection of the present invention.

Claims

1. A gas-fired high-efficiency, power-saving spray gun, comprising a spray gun housing, a gas conduit, a gas nozzle, and a burner, characterized in that: Also included is an air pressurization assembly; The spray gun housing is a cylindrical housing with an open front end and an inner cavity in the middle, and a bearing mounting seat is provided at the rear end; The rear end of the spray gun housing is also provided with a pressurizing chamber, which is communicated with the inner cavity; The air pressurizing component is arranged in the pressurizing chamber; An air inlet is provided on one side of the pressurized chamber; The gas conduit is a pipe body with a guide cavity in the middle, which is arranged in the middle of the spray gun housing, with its tail end connected to the gas input pipe and its front end connected to the gas nozzle; The burner is disc-shaped and is mounted on the front end opening of the spray gun housing.

2. The gas-fired high-efficiency power energy-saving spray gun according to claim 1, characterized in that: The air pressurizing assembly includes a booster impeller, a rotating shaft, a bearing, and a motor; the motor is fixed to the rear end of the spray gun housing, and its output shaft is connected to the rotating shaft; a bearing is sleeved on the outer wall of the rotating shaft, and the bearing is arranged in a bearing mounting seat; a booster impeller is sleeved on the outer wall of the front end of the rotating shaft.

3. The gas-fired high-efficiency power energy-saving spray gun according to claim 2, characterized in that: The outer wall of the rear end of the rotating shaft is sleeved with a heat dissipation impeller.

4. The gas-fired high-efficiency power energy-saving spray gun according to claim 3, characterized in that: The burner is provided with a plurality of air outlet holes 1, which pass through the front and rear end surfaces of the burner; and the plurality of air outlet holes 1 are arranged in a ring around the center of the burner.

5. The gas-fired high-efficiency power energy-saving spray gun according to claim 4, characterized in that: A mounting hole is provided in the middle of the burner, and the gas nozzle is arranged in the mounting hole; The gas nozzle is provided with a plurality of second gas outlet holes, and the plurality of second gas outlet holes are radially arranged at the front end of the gas nozzle.

6. The gas-fired high-efficiency power energy-saving spray gun according to any one of claims 1 to 5, characterized in that: A plurality of oblique air cavities are evenly distributed on the annular outer wall of the burner, and the plurality of oblique air cavities are arranged on the annular outer wall of the burner in a spirally inclined ring.

7. The gas-fired high-efficiency power energy-saving spray gun according to claim 6, characterized in that: The spray gun housing comprises a front shell and a rear shell, which are connected via threads.

8. The gas-fired high-efficiency power energy-saving spray gun according to claim 2, characterized in that: The rotating shaft and the motor output shaft are integrally formed.

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