Spray gun and incinerator

Abstract

The spray gun comprises an inner pipe, a feeding pipe and an air inlet pipe, the inner pipe comprises a front-section pipe and a rear-section pipe, one end of the front-section pipe is provided with a discharging port, the other end of the front-section pipe is fixedly connected with the rear-section pipe, the discharging port is connected with a conical nozzle, a plurality of spraying holes are formed in the inner side of the nozzle in a penetrating mode, and the spraying holes are communicated with the inner side of the nozzle. The multiple spraying holes are formed around the central axis of the nozzle at intervals, an included angle is formed between the center line of each spraying hole and the central axis of the nozzle, and a Venturi structure is arranged in the inner pipe. The feeding pipe is connected with the side wall of the rear section pipe and communicated with the inner pipe, and the extension line of the feeding pipe intersects with the extension line of the inner pipe. The air inlet pipe is embedded in the end, away from the front section pipe, of the rear section pipe, a spiral air guide groove is formed in the inner wall of the air inlet pipe, and the air inlet pipe is connected with a compressed air source. Negative pressure is formed in the inner pipe, the flowing speed is increased while materials are conveyed, the inner wall is scoured, the inner wall of the inner pipe is prevented from being blocked, and the use amount of compressed air is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of environmental purification treatment equipment, in particular to a spray gun and an incinerator. Background Art

[0002] An incinerator is a device that treats waste by high-temperature combustion. It is usually used to treat solid waste, hazardous waste, etc. The principle is that the waste is burned at high temperature (usually between 850°C and 1200°C), and the waste is converted into ash, gas and heat energy through three stages of pyrolysis, gasification and combustion. For example, the invention patent with application number CN201610730354.0 discloses a garbage incinerator, including a furnace body, which is cylindrical with a middle beam mouth, and the side wall is provided with a feed port, an air inlet, and a waste liquid spray gun, an air outlet is provided on the top, and a waste residue outlet is provided at the bottom. A high-speed air duct is provided on the side wall of the middle beam mouth; a burner is located below the middle beam mouth of the furnace body; the air inlet is connected to an air heating device, and a flow valve is provided on the connecting pipe. The high-speed air duct is at an angle of 45° with the side wall of the furnace body. Among them, this structure is a conventional design of an incinerator, which uses a spray gun to promote the mixing of combustion-supporting materials and gases and promote the combustion of waste. However, after a long period of use, the spray gun will become clogged, affecting the input of compressed air, resulting in the need to add more compressed air to meet the combustion needs. Utility Model Content

[0003] The utility model aims to solve at least one of the technical problems existing in the prior art. To this end, the utility model provides a spray gun that can reduce the usage of compressed air and materials.

[0004] The utility model also provides an incinerator with the spray gun.

[0005] According to the first aspect of the present invention, the spray gun comprises an inner tube, a feed pipe and an air inlet pipe, the inner tube comprises a front section tube and a rear section tube, one end of the front section tube is provided with a discharge port, and the other end is fixedly connected to the rear section tube, the discharge port is connected to a conical nozzle, a plurality of spray holes are arranged through the inner side of the nozzle, the plurality of spray holes are arranged around the central axis of the nozzle at intervals, the center line of the spray hole and the central axis of the nozzle form an angle of 15° to 30°, a Venturi structure is arranged in the inner tube; the feed pipe is connected to the side wall of the rear section tube and communicated with the inner tube, the extension line of the feed pipe intersects with the extension line of the inner tube; the air inlet pipe is embedded in the end of the rear section tube away from the front section tube, the inner wall of the air inlet pipe is provided with a spiral air guide groove, and the air inlet pipe is connected to a compressed air source.

[0006] The spray gun according to the embodiment of the utility model has at least the following beneficial effects: forming a negative pressure in the inner tube, accelerating the flow speed while conveying the material, flushing the inner wall, avoiding clogging of the inner wall of the inner tube, and reducing the use of compressed air and materials.

[0007] According to some embodiments of the utility model, the end of the front section pipe is fixedly connected to a first flange, the end of the rear section pipe is fixedly connected to a second flange, and the first flange and the second flange are fixedly connected by screws to fix the front section pipe and the rear section pipe.

[0008] According to some embodiments of the utility model, part of the rear section tube is wrapped with an outer tube, the inner side surface of the outer tube is provided with an annular protrusion, the outer wall of the rear section tube is provided with an annular groove, the protrusion is embedded in the groove to construct an air guide groove between the outer tube and the inner tube, wherein a plurality of through holes are pierced on the protrusion to connect the two ends of the air guide groove, the outer tube is connected to a cooling air duct, and the cooling air duct is connected to a cooling air source.

[0009] According to some embodiments of the present invention, the plurality of through holes are arranged at equal intervals around the central axis of the outer tube.

[0010] According to some embodiments of the present invention, the feed pipe is inclined toward one end of the rear section pipe away from the front section pipe, and an angle of 30° to 60° is formed between the feed pipe and the rear section pipe.

[0011] According to some embodiments of the utility model, the air intake pipe and the inner pipe are fixedly connected via threads.

[0012] According to some embodiments of the present invention, the Venturi structure is arranged in the rear section pipe.

[0013] According to some embodiments of the present invention, the front section pipe and the rear section pipe are integrally formed, and the Venturi structure is arranged between the feed pipe and the nozzle.

[0014] The incinerator according to the second embodiment of the utility model comprises the spray gun and furnace body of the first embodiment of the utility model, wherein the front section pipe is built in the furnace body, and the rear section pipe is exposed outside the furnace body.

[0015] The incinerator according to the embodiment of the utility model has at least the following beneficial effects: negative pressure is formed in the inner tube, the flow speed is accelerated while conveying materials, and the inner wall is flushed to avoid clogging of the inner wall of the inner tube, thereby reducing the use of compressed air and materials.

[0016] According to some embodiments of the utility model, the end of the front section pipe is fixedly connected to a first flange, and the end of the rear section pipe is fixedly connected to a second flange. The first flange and the second flange are fixedly connected by screws to fix the front section pipe and the rear section pipe, and the first flange is fixedly connected to the outer wall of the furnace body.

[0017] Additional aspects and advantages of the present invention will be given in part in the following description, and in part will become apparent from the following description, or will be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The present invention is further described below with reference to the accompanying drawings and embodiments, wherein:

[0019] Figure 1 A schematic diagram of a spray gun according to an embodiment of the present utility model;

[0020] Figure 2 A schematic diagram of a nozzle of a spray gun according to an embodiment of the present invention;

[0021] Figure 3 The utility model is a schematic diagram of an incinerator according to an embodiment of the present invention.

[0022] 100, inner tube; 110, front tube; 111, first flange; 120, rear tube; 121, second flange; 122, groove; 130, Venturi structure;

[0023] 200, feed pipe;

[0024] 300, air intake pipe; 310, air guide groove;

[0025] 400, nozzle; 410, spray hole;

[0026] 500, outer tube; 510, protrusion; 511, through hole;

[0027] 1. Furnace body; DETAILED DESCRIPTION

[0028] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0029] In the description of the present invention, it should be understood that descriptions involving orientation, such as up, down, front, back, left, right, etc., indicating orientation or positional relationships, are based on the orientation or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0030] In the description of the present utility model, "several" means one or more, "more" means more than two, "greater than", "less than", "exceed" etc. are understood as not including the number itself, and "above", "below", "within" etc. are understood as including the number itself. If there is a description of "first", "second" is only used for the purpose of distinguishing technical features, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features or implicitly indicating the order of the indicated technical features.

[0031] In the description of the present invention, unless otherwise clearly defined, terms such as setting, installing, connecting, etc. should be understood in a broad sense, and technicians in the relevant technical field can reasonably determine the specific meanings of the above terms in the present invention based on the specific content of the technical solution.

[0032] Reference Figures 1 to 3 The incinerator of the utility model embodiment comprises a spray gun and a furnace body 1, wherein, with reference to Figure 3 The front section pipe 110 is built into the furnace body 1, and the rear section pipe 120 is exposed outside the furnace body 1. The spray gun is used to input compressed gas into the furnace body 1, and is used to promote the combustion of combustible materials, so that the harmful substances in the furnace body 1 can be burned out. Figure 1 The spray gun includes an inner tube 100, a feed pipe 200 and an air inlet pipe 300. The inner tube 100 includes a front section tube 110 and a rear section tube 120. One end of the front section tube 110 is provided with a discharge port, and the other end is fixedly connected to the rear section tube 120. The discharge port is connected to a conical nozzle 400. A plurality of spray holes 410 are arranged on the inner side of the nozzle 400. The plurality of spray holes 410 are arranged around the central axis of the nozzle 400 at intervals. The center line of the spray hole 410 and the center line of the nozzle 400 are The central axis forms an angle of 15° to 30°, and a Venturi structure 130 is provided in the inner tube 100; the feed pipe 200 is connected to the side wall of the rear section tube 120 and communicated with the inner tube 100, and the extension line of the feed pipe 200 intersects with the extension line of the inner tube 100; the air intake pipe 300 is embedded in one end of the rear section tube 120 away from the front section tube 110, and the inner wall of the air intake pipe 300 is provided with a spiral air guide groove 310, and the air intake pipe 300 is connected to a compressed air source.

[0033] In actual use, in order to promote the complete combustion of the harmful waste inside the furnace body 1, it is necessary to inject the combustion-supporting materials mixed with the air into the furnace body 1 through the feed pipe 200. At the same time, the compressed air is synchronously injected through the air intake pipe 300. The compressed air and the mixed materials are further mixed in the inner tube 100, and are successively output from the nozzle 400 to the inside of the furnace body 1 through the rear section pipe 120 and the front section pipe 110. When the compressed air enters from the air intake pipe 300, it will flow along the air guide groove 310 to form a spiral airflow. After the spiral airflow enters the inner tube 100, it will be fully mixed with the materials from the feed pipe 200, and fully The mixing uniformity between gas and material is improved. In addition, when the compressed air mixed with the material enters the Venturi structure 130, a negative pressure is formed in the inner tube 100. The formed negative pressure can generate suction on the feed pipe 200, so as to promote the material to enter the inner tube 100 from the feed pipe 200 better and avoid the material from adhering to the feed pipe 200. In addition, the angled feed pipe 200 further promotes the material to enter the inner tube 100. Furthermore, the air-material mixture sprayed at the nozzle 400 is sprayed from the front end of the nozzle 400 and the surrounding spray holes 410 respectively, so as to expand the spray range and promote the complete incineration of harmful waste inside the furnace body 1.

[0034] In summary, firstly, a negative pressure is formed in the inner tube 100, which accelerates the flow speed and flushes the inner wall while conveying the material, thereby avoiding clogging of the inner wall of the inner tube 100 and reducing the use of compressed air and materials; secondly, by forming a spiral airflow, the material and compressed gas are better mixed, thereby improving the combustion efficiency; thirdly, the nozzle hole 410 structure of the nozzle 400 can cause the material-gas mixture injected into the furnace body 1 to better fill the entire furnace body 1, thereby improving the combustion efficiency.

[0035] Specifically, the venturi structure 130 is disposed in the rear section pipe 120 and is located at the front end of the feed pipe 200 , so that the position where the feed pipe 200 is connected to the inner pipe 100 can be in a negative pressure state.

[0036] Preferably, the feed pipe 200 is inclined toward one end of the rear pipe 120 away from the front pipe 110, and the angle between the feed pipe 200 and the rear pipe 120 is 30° to 60°. At the same time, the air intake pipe 300 and the inner pipe 100 are fixedly connected by threads.

[0037] In the incinerator of the first embodiment of the utility model, the end of the front section pipe 110 is fixedly connected with a first flange 111, and the end of the rear section pipe 120 is fixedly connected with a second flange 121. The first flange 111 and the second flange 121 are fixedly connected by screws to fix the front section pipe 110 and the rear section pipe 120. The segmented design facilitates assembly, wherein the first flange 111 is fixedly connected to the outer side wall of the furnace body 1, so that the front section pipe 110 can be built into the furnace body 1.

[0038] In the incinerator of the second embodiment of the present invention, the entire inner tube 100 is formed in one piece, and the Venturi structure 130 is arranged between the feed pipe 200 and the nozzle 400.

[0039] Further, part of the rear section tube 120 is wrapped with the outer tube 500, the inner side of the outer tube 500 is provided with an annular protrusion 510, the outer wall of the rear section tube 120 is provided with an annular groove 122, the protrusion 510 is embedded in the groove 122, so that an air guide groove is constructed between the outer tube 500 and the inner tube 100, wherein a plurality of through holes 511 are pierced on the protrusion 510, so that the two ends of the air guide groove are connected, and the outer tube 500 is connected with a cooling air duct, and the cooling air duct is connected with a cooling air source. In actual use, cooling air is injected by the cooling air duct, so that the cooling air flows in the air guide groove, and the inner tube 100 is cooled to prevent the material from being heated and solidified on the inner wall of the inner tube 100. Specifically, in order to facilitate the smooth flow of cooling air, a plurality of through holes 511 are arranged at equal intervals around the central axis of the outer tube 500.

[0040] The embodiments of the present invention are described in detail above in conjunction with the accompanying drawings, but the present invention is not limited to the above embodiments, and various changes can be made within the knowledge scope of ordinary technicians in the relevant technical field without departing from the purpose of the present invention.

Claims

1. A spray gun, characterized in that: include: The inner tube (100) comprises a front tube (110) and a rear tube (120); one end of the front tube (110) is provided with a discharge port, and the other end is fixedly connected to the rear tube (120); the discharge port is connected to a conical nozzle (400); a plurality of spray holes (410) are provided through the inner side of the nozzle (400); the plurality of spray holes (410) are arranged at intervals around the central axis of the nozzle (400); the center line of the spray hole (410) and the central axis of the nozzle (400) form an angle of 15° to 30°; and a Venturi structure (130) is provided in the inner tube (100); A feed pipe (200) is connected to the side wall of the rear section pipe (120) and communicated with the inner pipe (100), and an extension line of the feed pipe (200) intersects with an extension line of the inner pipe (100); An air intake pipe (300) is embedded in one end of the rear pipe (120) away from the front pipe (110), and a spiral air guide groove (310) is provided on the inner wall of the air intake pipe (300). The air intake pipe (300) is connected to a compressed air source.

2. The spray gun according to claim 1, characterized in that The end of the front section pipe (110) is fixedly connected to a first flange (111), and the end of the rear section pipe (120) is fixedly connected to a second flange (121); the first flange (111) and the second flange (121) are fixedly connected by screws, so that the front section pipe (110) and the rear section pipe (120) are fixedly connected.

3. The spray gun according to claim 1, characterized in that Part of the rear section tube (120) is wrapped with an outer tube (500), the inner side surface of the outer tube (500) is provided with an annular protrusion (510), the outer wall of the rear section tube (120) is provided with an annular groove (122), the protrusion (510) is embedded in the groove (122), so that an air guide groove is constructed between the outer tube (500) and the inner tube (100), wherein a plurality of through holes (511) are pierced on the protrusion (510), so that the two ends of the air guide groove are connected, the outer tube (500) is connected to a cooling air duct, and the cooling air duct is connected to a cooling air source.

4. The spray gun according to claim 3, characterized in that The plurality of through holes (511) are arranged at equal intervals around the central axis of the outer tube (500).

5. The spray gun according to claim 1, characterized in that The feed pipe (200) is arranged to be inclined toward one end of the rear section pipe (120) away from the front section pipe (110), and an angle of 30° to 60° is formed between the feed pipe (200) and the rear section pipe (120).

6. The spray gun according to claim 1, characterized in that The air intake pipe (300) and the inner pipe (100) are fixedly connected via threads.

7. The spray gun according to claim 1, characterized in that The Venturi structure (130) is arranged in the rear section pipe (120).

8. The spray gun according to claim 1, characterized in that The front section pipe (110) and the rear section pipe (120) are integrally formed, and the Venturi structure (130) is arranged between the feed pipe (200) and the nozzle (400).

9. An incinerator, characterized in that It comprises the spray gun and furnace body (1) according to any one of claims 1 to 8, wherein the front section pipe (110) is built into the furnace body (1), and the rear section pipe (120) is exposed outside the furnace body (1).

10. The incinerator according to claim 9, characterized in that: The end of the front section pipe (110) is fixedly connected to a first flange (111), and the end of the rear section pipe (120) is fixedly connected to a second flange (121); the first flange (111) and the second flange (121) are fixedly connected by screws so that the front section pipe (110) and the rear section pipe (120) are fixedly connected; and the first flange (111) and the outer side wall of the furnace body (1) are fixedly connected.

Images