Immersed combustion spray gun

Abstract

The utility model discloses an immersed combustion spray gun which comprises a spray gun shell, a natural gas pipeline is arranged in the spray gun shell, an annular conveying pipe is arranged at the position, located on the outer side of the natural gas pipeline, in the spray gun shell, and the annular conveying pipe is communicated with a plurality of sets of air conveying pipes. The air conveying pipe and the natural gas pipeline are communicated with a mixing cavity formed in the spray gun shell, a plurality of sets of guide vanes used in cooperation with the air conveying pipe are installed in the mixing cavity, a splitter plate is installed at the rear end of the mixing cavity, a conveying pipe is arranged on one side of the splitter plate, and one end of the conveying pipe is communicated with the interior of the mixing cavity. And the other end of the conveying pipe is connected with the nozzle. According to the immersed type combustion spray gun, in order to solve the problem that according to an existing combustion spray gun, combustion gas and air are mixed through a nozzle, and the situation of uneven mixing is likely to occur, the natural gas pipeline is arranged in the spray gun shell, and the annular conveying pipe is arranged at the position, located on the outer side of the natural gas pipeline, in the spray gun shell.

Description

Technical Field

[0001] The utility model relates to the technical field of combustion spray guns, in particular to an immersion type combustion spray gun. Background Art

[0002] The submerged combustion spray gun is a new type of energy-saving and environmentally friendly combustion technology, also known as the liquid combustion method. The main feature of the submerged combustion spray gun is that the gas and air are fully mixed in advance and then sent into the combustion chamber for complete combustion. The high-temperature flue gas produced by the combustion is directly sprayed into the liquid, thereby heating the liquid. This technology is not only energy-saving and environmentally friendly, but also improves energy utilization efficiency and reduces environmental pollution by directly heating the liquid. In addition, the application of the submerged combustion spray gun is not limited to the combustion technology itself, it is also used in direct contact evaporators, such as the submerged combustion evaporator, which is a type of evaporator in which the heat transfer medium is in direct contact with the treated solution for heat transfer. The application of this technology further expands the use scenarios of submerged combustion technology, enabling it to play an important role in industrial and civil fields.

[0003] After searching, it is found that in the prior art, such as the announcement number CN206347569U, a high-pressure burner includes an air intake device and a mixed air jet device connected to each other, the air intake device includes a first sleeve, a second sleeve and a third sleeve arranged in sequence from the inside to the outside, a high-pressure oxygen air intake passage is arranged inside the first sleeve, a comprehensive air intake passage is arranged between the first sleeve and the second sleeve, a gas air intake passage is arranged between the second sleeve and the third sleeve, the mixed air jet device includes a guide mixing chamber, a high-pressure oxygen guide chamber and a nozzle, the guide mixing chamber connects the gas air intake passage and the comprehensive air intake passage, the high-pressure oxygen guide chamber connects the high-pressure oxygen air intake passage, the guide mixing chamber and the high-pressure oxygen guide chamber are both connected to the nozzle, an air intake baffle is arranged between the comprehensive air intake passage and the guide mixing chamber, and a one-way air intake valve is arranged on the air intake baffle. The utility model has the advantages of strong practicality, uniform mixing and sufficient combustion.

[0004] In summary, the existing combustion spray gun has the advantage of sufficient combustion, but the existing combustion spray gun mixes the combustion gas with the air through the nozzle, which is prone to uneven mixing. Therefore, an immersion combustion spray gun is proposed. Utility Model Content

[0005] The utility model aims to provide an immersion combustion spray gun to solve the problem that the existing combustion spray guns mentioned in the background technology mix the combustion gas and air through the nozzle, which is prone to uneven mixing.

[0006] To achieve the above object, the present utility model provides the following technical solutions: An immersion combustion spray gun, comprising a spray gun housing, wherein a natural gas pipeline is arranged inside the spray gun housing, and an annular delivery pipe is arranged outside the natural gas pipeline inside the spray gun housing. The annular delivery pipe is communicated with a plurality of groups of air delivery pipes, and the air delivery pipes and the natural gas pipeline are communicated with a mixing chamber arranged inside the spray gun housing. A plurality of groups of guide vanes used in cooperation with the air delivery pipes are installed inside the mixing chamber, and the guide vanes can guide the gas delivered in the air delivery pipes towards the middle of the mixing chamber. A flow dividing plate is installed at the rear end of the mixing chamber, and a delivery pipe is arranged on one side of the flow dividing plate. One end of the delivery pipe is communicated with the inside of the mixing chamber, and the other end of the delivery pipe is connected to a nozzle.

[0007] Preferably, the natural gas pipeline is arranged at the central position of the spray gun housing, and one end of the natural gas pipeline penetrates to the outside of the spray gun housing and is connected to an external natural gas delivery pipeline.

[0008] Through the above technical solution: It is convenient to access natural gas.

[0009] Preferably, the annular delivery pipe is connected to an external air access pipe through a connecting pipe.

[0010] Through the above technical solution: It is convenient to access air.

[0011] Preferably, a plurality of flow dividing holes are formed on the flow dividing plate, and the flow dividing holes are annularly distributed.

[0012] Through the above technical solution: It is convenient to improve the mixing effect.

[0013] Preferably, both the delivery pipe and the nozzle are located inside an opening protection body.

[0014] Through the above technical solution: It has a protective effect on the delivery pipe and the nozzle.

[0015] Preferably, the nozzle is a negative pressure nozzle.

[0016] Through the above technical solution: It improves the spray pressure.

[0017] Compared with the prior art, the beneficial effects of the present utility model are as follows: For this submerged combustion spray gun, in order to solve the problem that in the existing combustion spray gun, the combustion gas and air are mixed through the nozzle and it is easy to have uneven mixing, a natural gas pipeline is arranged inside the spray gun housing, and an annular delivery pipe is arranged outside the natural gas pipeline inside the spray gun housing. The annular delivery pipe is communicated with several groups of air delivery pipes, and the air delivery pipes and the natural gas pipeline are communicated with a mixing chamber arranged inside the spray gun housing. Several groups of guide vanes used in cooperation with the air delivery pipes are installed inside the mixing chamber, and the guide vanes can guide the gas delivered in the air delivery pipes towards the middle of the mixing chamber. A flow dividing plate is installed at the rear end of the mixing chamber, and a delivery pipe is arranged on one side of the flow dividing plate. One end of the delivery pipe is communicated with the inside of the mixing chamber, and the other end of the delivery pipe is connected to the nozzle. When in use, natural gas and air are preliminarily mixed in the mixing chamber, and the preliminarily mixed gas enters the inside of the delivery pipe through the flow dividing plate. The setting of the flow dividing plate can remix the gas, and the finally mixed gas is delivered to the inside of the nozzle through the delivery pipe and ejected. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 is the overall front view sectional structure schematic diagram of the present utility model;

[0019] Figure 2 For the present utility model Figure 1 is the enlarged structure schematic diagram at A in;

[0020] Figure 3 For the present utility model Figure 1 is the enlarged structure schematic diagram at B in;

[0021] Figure 4 is the connection relationship schematic diagram of the annular delivery pipe of the present utility model.

[0022] In the figure: 1. Spray gun housing; 2. Natural gas pipeline; 3. Annular delivery pipe; 301. Air delivery pipe; 3011. Connecting pipe; 4. Mixing chamber; 401. Guide vane; 5. Flow dividing plate; 501. Delivery pipe; 5011. Flow dividing hole; 502. Nozzle; 6. Opening protection body. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0023] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0024] Please refer to Figures 1-4, the present utility model provides a technical solution: an immersion combustion spray gun. A natural gas pipeline 2 is arranged inside a spray gun housing 1, and an annular delivery pipe 3 is arranged outside the natural gas pipeline 2 inside the spray gun housing 1.

[0025] Further explanation, the natural gas pipeline 2 is arranged at the central position of the spray gun housing 1, and one end of the natural gas pipeline 2 penetrates to the outside of the spray gun housing 1 and is connected to an external natural gas delivery pipeline.

[0026] Still further explanation, the annular delivery pipe 3 is connected to an external air intake pipe through a connecting pipe 3011.

[0027] Specifically, the annular delivery pipe 3 communicates with a plurality of groups of air delivery pipes 301, and both the air delivery pipes 301 and the natural gas pipeline 2 communicate with a mixing chamber 4 arranged inside the spray gun housing 1. By arranging a plurality of groups of air delivery pipes 301, the air delivered in the air delivery pipes 301 can be ejected from multiple positions, so that the air and natural gas are more fully mixed in the mixing chamber 4. A plurality of groups of guide vanes 401 used in cooperation with the air delivery pipes 301 are installed inside the mixing chamber 4, and the guide vanes 401 can guide the gas delivered in the air delivery pipes 301 towards the middle of the mixing chamber 4, so that the air delivered in the air delivery pipes 301 and the natural gas delivered by the natural gas pipeline 2 are more fully mixed. A flow dividing plate 5 is installed at the rear end of the mixing chamber 4. A plurality of flow dividing holes 5011 are formed in the flow dividing plate 5, and the flow dividing holes 5011 are annularly distributed. The preliminarily mixed gas enters the inside of a delivery pipe 501 through the flow dividing holes 5011, and the gas can be mixed again under the action of the flow dividing holes 5011. A delivery pipe 501 is arranged on one side of the flow dividing plate 5. One end of the delivery pipe 501 is communicated with the inside of the mixing chamber 4, and the other end of the delivery pipe 501 is connected to a nozzle 502. The nozzle 502 is a negative pressure nozzle, which can increase the pressure when the gas is ejected.

[0028] In a further embodiment, both the delivery pipe 501 and the nozzle 502 are located inside an opening protection body 6, which can play a certain protective role for the delivery pipe 501 and the nozzle 502.

[0029] During use, natural gas and air are introduced, mixed in the mixing chamber 4, enter the nozzle 502 through a pipeline and are sprayed into the molten smelting furnace materials. The gas flow overflows from the molten materials, and a combustion reaction can occur in the molten materials until it overflows the liquid surface and continues to complete the combustion reaction.

[0030] The orientation or positional relationship indicated by terms such as "center", "longitudinal", "transverse", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is only a simplified description for facilitating the description of the present utility model, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus cannot be construed as a limitation on the protected content of the present utility model.

[0031] Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements on some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. A submerged combustion spray gun, comprising a spray gun housing (1), characterized in that: A natural gas pipeline (2) is arranged inside the spray gun housing (1), and an annular delivery pipe (3) is arranged inside the spray gun housing (1) outside the natural gas pipeline (2); the annular delivery pipe (3) is connected to a plurality of groups of air delivery pipes (301), and the air delivery pipe (301) and the natural gas pipeline (2) are connected to a mixing chamber (4) arranged inside the spray gun housing (1); a plurality of groups of guide vanes (401) used in conjunction with the air delivery pipe (301) are arranged inside the mixing chamber (4), and the guide vanes (401) can guide the gas transported in the air delivery pipe (301) to the middle of the mixing chamber (4); a splitter plate (5) is arranged at the rear end of the mixing chamber (4), and a delivery pipe (501) is arranged on one side of the splitter plate (5); one end of the delivery pipe (501) is connected to the inside of the mixing chamber (4), and the other end of the delivery pipe (501) is connected to the nozzle (502).

2. The submerged combustion spray gun according to claim 1, characterized in that: The natural gas pipeline (2) is arranged at the center of the spray gun housing (1), and one end of the natural gas pipeline (2) penetrates to the outside of the spray gun housing (1) and is connected to an external natural gas transmission pipeline.

3. The submerged combustion spray gun according to claim 1, characterized in that: The annular conveying pipe (3) is connected to the external air access pipe via a connecting pipe (3011).

4. The submerged combustion spray gun according to claim 1, characterized in that: The diverter plate (5) is provided with a plurality of groups of diverter holes (5011), and the diverter holes (5011) are distributed in a ring shape.

5. The submerged combustion spray gun according to claim 1, characterized in that: The delivery pipe (501) and the nozzle (502) are both located inside the opening protection body (6).

6. The submerged combustion spray gun according to claim 1, characterized in that: The nozzle (502) is a negative pressure nozzle.

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