Sludge spray gun suitable for garbage incinerator

Abstract

The utility model relates to a sludge spray gun suitable for a garbage incinerator. The sludge spray gun comprises a gun head, an outer sleeve and an inner sleeve, the gun head comprises a gun head shell and a gun head seat; the inner sleeve is arranged in the outer sleeve, an airflow channel is formed between the inner wall of the outer sleeve and the outer wall of the inner sleeve, and an inner hole of the inner sleeve forms a liquid channel; one end of the gun head shell is connected to one end of the outer sleeve, the other end of the gun head shell is a spherical face, a nozzle is formed in the spherical face, and a mixing cavity is formed in the inner side of the spherical face. The gun head base is arranged in the gun head shell, one end of the gun head base is connected to the inner sleeve, and the other end of the gun head base is a conical opening with the diameter gradually increasing in the nozzle direction. The liquid channel communicates with the mixing cavity through the conical opening, and the airflow channel communicates with the mixing cavity. The outer sleeve is provided with a gas inlet joint communicated with the gas flow channel and used for introducing compressed gas, and one end of the inner hole of the inner sleeve is provided with a liquid inlet joint used for introducing sludge. According to the utility model, the drying accumulation of atomized sludge on the gun head caused by unstable sludge pressure can be reduced after the atomized sludge is sprayed out, and the blockage condition of the nozzle is delayed.

Description

Technical Field

[0001] The utility model belongs to the technical field of garbage incineration power generation and relates to a sludge spray gun suitable for a garbage incinerator. Background Art

[0002] In the process of treating domestic waste and incinerating it for power generation, it is necessary to continuously treat the leachate from the garbage pit. Using a biochemical system to treat leachate is currently the mainstream leachate treatment method. In this process, it is necessary to continuously discharge the sludge in the system to ensure that the number of bacteria is within a controllable range.

[0003] At present, waste incineration power plants mainly use the method of sludge back spraying into garbage pits or feeding ports to dispose of sludge. In the existing technology, sludge needs to be dehydrated and dried before being incinerated in different kilns to achieve comprehensive utilization of thermal energy or final disposal. In the process system of dried sludge incineration, the dried sludge needs to be evenly dispersed into appropriate particle sizes and continuously and stably output under sufficient oxygen conditions so that it can be fully burned and utilized economically and with low consumption. However, due to the unstable water content of dried sludge, there are problems such as sludge not being dispersed, easy to clog, and difficult to clean, and the composition is complex, and there are potential problems such as corrosion and pollution. The existing dried sludge incineration technology needs to be improved. Utility Model Content

[0004] In view of this, the purpose of the utility model is to solve the above-mentioned problem and provide a sludge spray gun suitable for a garbage incinerator.

[0005] In order to achieve the above object, the utility model provides the following technical solutions:

[0006] A sludge spray gun suitable for a garbage incinerator comprises a gun head, an outer sleeve and an inner sleeve; the gun head comprises a gun head shell and a gun head seat; the inner sleeve is arranged in the outer sleeve, an air flow channel is formed between the inner wall of the outer sleeve and the outer wall of the inner sleeve, and an inner hole of the inner sleeve forms a liquid channel;

[0007] One end of the gun head shell is connected to one end of the outer sleeve, and the other end is a spherical surface, a nozzle is opened on the spherical surface, and the inner side of the spherical surface is a mixing chamber; the gun head seat is arranged in the gun head shell, one end of the gun head seat is connected to the inner sleeve, and the other end is a tapered mouth with a diameter gradually increasing toward the nozzle;

[0008] The liquid channel is connected with the mixing chamber through the tapered mouth, and the air flow channel is connected with the mixing chamber; the outer sleeve is provided with an air inlet connector connected with the air flow channel for connecting compressed gas, and one end of the inner hole of the inner sleeve is provided with a liquid inlet connector for connecting sludge.

[0009] Furthermore, the nozzle is a fan-shaped cut, and the angle of the fan is 15° to 20°.

[0010] Furthermore, the nozzle is located at the center of the spherical surface and directly faces the conical mouth.

[0011] Furthermore, the air inlet joint is arranged on the outer wall of the outer sleeve, the inner sleeve is coaxially arranged with the outer sleeve, and a sealing head is provided at the end of the inner sleeve away from the gun head, and one end of the airflow channel is blocked by the sealing head.

[0012] Furthermore, the outer wall of the tapered mouth is also tapered, and a constriction structure is formed between the outer wall of the tapered mouth and the inner wall of the gun head shell. The gas in the airflow channel is accelerated by the constriction structure and enters the mixing chamber.

[0013] Furthermore, a guide impeller is provided in the air flow channel; the guide impeller comprises a base and a plurality of spiral blades fixed on the base and distributed in a circular array; the base is fixedly connected to the inner sleeve and is located at one end of the inner sleeve close to the gun head seat.

[0014] Furthermore, one or more guide vanes are provided in the air flow channel.

[0015] Furthermore, the mixing chamber is conical, and its diameter gradually decreases from the conical mouth to the nozzle.

[0016] Furthermore, the gun head, outer sleeve and inner sleeve are made of 310S stainless steel.

[0017] The beneficial effects of the utility model are:

[0018] 1. In the utility model, the air flow channel surrounds the liquid channel. The sludge is sprayed into the mixing chamber through the tapered mouth and hits the inner wall of the spherical surface to form atomized particles. After the air flow enters the mixing chamber through the air flow channel, it is mixed with the atomized particles under the guidance of the spherical surface and drives the sludge to be sprayed outward through the nozzle. The nozzle is located on the spherical surface, which can reduce the drying accumulation of the atomized sludge on the gun head after being sprayed out due to unstable sludge pressure, and delay the blockage of the nozzle.

[0019] 2. In the utility model, the gas-liquid mixing zone is located at the front part of the gun head, and the gun head seat is expanded in a trumpet shape and extends into the gun head shell; this structure reduces the volume of the gas-liquid mixing zone, and at the same time tightens the gap for the air flow to enter the mixing chamber, reducing the risk of high-pressure sludge backflow blocking the compressed air flow channel.

[0020] 3. The guide impeller used in the utility model causes the airflow to form a vortex in the airflow channel, and increases the outlet pressure of the airflow through the constriction structure, balances the pressure difference between the airflow channel and the liquid channel, and effectively prevents sludge from flowing back into the airflow channel.

[0021] 4. The effective atomization distance of the utility model can reach 2.5 meters, and the spray coverage area is about 2.5 to 3.0 meters 2, the stable flow rate of atomized sludge can reach 30 tons / day.

[0022] Other advantages, objectives and features of the present invention will be described in the following description to some extent, and will be apparent to those skilled in the art based on the following examination and research, or can be taught from the practice of the present invention to some extent. The objectives and other advantages of the present invention can be achieved and obtained through the following description. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to make the purpose, technical solution and advantages of the utility model clearer, the utility model will be described in detail below in conjunction with the accompanying drawings, in which:

[0024] Figure 1 It is an overall schematic diagram of a sludge spray gun suitable for a garbage incinerator in the utility model.

[0025] Figure 2 A cross-sectional view of a sludge spray gun suitable for a waste incinerator.

[0026] Figure 3 Schematic diagram of the outer sleeve.

[0027] Figure 4 Schematic diagram of the gun tip.

[0028] Figure 5 Schematic diagram of the guide impeller.

[0029] Figure numerals: 1 - outer sleeve; 2 - inner sleeve; 3 - gun head; 4 - air flow channel; 5 - liquid channel; 6 - mixing chamber; 7 - guide impeller; 8 - head; 31 - gun head housing; 32 - gun head seat; 33 - nozzle; 34 - conical mouth. DETAILED DESCRIPTION

[0030] The following describes the implementation of the present invention through specific examples. Those skilled in the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification. The present invention can also be implemented or applied through other different specific implementations, and the details in this specification can also be modified or changed in various ways based on different viewpoints and applications without departing from the spirit of the present invention. It should be noted that the illustrations provided in the following embodiments only illustrate the basic concept of the present invention in a schematic manner. The following embodiments and the features in the embodiments can be combined with each other without conflict.

[0031] Among them, the drawings are only used for illustrative explanations, and they only represent schematic diagrams rather than actual pictures, and should not be understood as limitations on the present utility model. In order to better illustrate the embodiments of the present utility model, some parts of the drawings may be omitted, enlarged or reduced, and do not represent the size of the actual product. For those skilled in the art, it is understandable that some well-known structures and their descriptions in the drawings may be omitted.

[0032] The same or similar numbers in the drawings of the embodiments of the present invention correspond to the same or similar parts; in the description of the present invention, it should be understood that if the terms "upper", "lower", "left", "right", "front", "back" and the like indicate directions or positional relationships, they are based on the directions or positional relationships shown in the drawings, which are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, the terms describing the positional relationship in the drawings are only used for illustrative purposes and cannot be understood as a limitation on the present invention. For ordinary technicians in this field, the specific meanings of the above terms can be understood according to specific circumstances.

[0033] See also Figures 1 to 5 , which is a sludge spray gun suitable for a garbage incinerator, comprising a gun head 3, an outer sleeve 1, and an inner sleeve 2; the gun head 3 comprises a gun head shell 31 and a gun head seat 32; the inner sleeve 2 is coaxially arranged in the outer sleeve 1, an air flow channel 4 is formed between the inner wall of the outer sleeve 1 and the outer wall of the inner sleeve 2, and the inner hole of the inner sleeve 2 forms a liquid channel 5;

[0034] One end of the gun head shell 31 is connected to one end of the outer sleeve 1, and the other end is a spherical surface with a nozzle 33, and the inner side of the spherical surface is a mixing chamber 6; the gun head seat 32 is arranged in the gun head shell 31, and one end of the gun head seat 32 is connected to the inner sleeve 2, and the other end is a tapered mouth 34 whose diameter gradually increases toward the nozzle 33; the mixing chamber 6 is also tapered, and the diameter gradually decreases from the tapered mouth 34 to the nozzle 33.

[0035] The liquid channel 5 is connected to the mixing chamber 6 through the tapered mouth 34, and the air flow channel 4 is connected to the mixing chamber 6; the outer sleeve 1 is provided with an air inlet connector connected to the air flow channel 4 for connecting compressed gas, and one end of the inner hole of the inner sleeve 2 is provided with a liquid inlet connector for connecting sludge.

[0036] The air inlet joint is installed on the outer wall of the outer sleeve 1, and a sealing head 8 is installed at the end of the inner sleeve 2 away from the gun head 3, and one end of the air flow channel 4 is blocked by the sealing head 8.

[0037] The nozzle 33 is a fan-shaped cutout with a length of 34.5 mm and a width of 8 mm. The angle of the fan-shaped cutout can be arbitrarily selected within the range of 15° to 20°. The angle adopted in this embodiment is 16.71°.

[0038] The nozzle 33 is located at the center of the spherical surface and directly faces the conical opening 34, so that the nozzle 33 is located at the highest point of the spherical surface.

[0039] The outer wall of the tapered opening 34 is also tapered, and a constriction structure is formed between the outer wall of the tapered opening 34 and the inner wall of the gun head housing 31 . The gas in the airflow channel 4 is accelerated by the constriction structure and enters the mixing chamber 6 .

[0040] In this embodiment, two spaced-apart guide impellers 7 are provided in the air flow channel 4; the guide impeller 7 includes a base and a plurality of spiral blades fixedly provided on the base and distributed in a circular array; the base is fixedly connected to the inner sleeve 2 and is located at one end of the inner sleeve 2 close to the gun head seat 32.

[0041] In this embodiment, the gun head 3, the outer sleeve 1, and the inner sleeve 2 are all made of 310S stainless steel.

[0042] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model rather than to limit it. Although the utility model has been described in detail with reference to the preferred embodiments, ordinary technicians in the field should understand that the technical solution of the utility model can be modified or replaced by equivalents without departing from the purpose and scope of the technical solution, which should be included in the scope of the claims of the utility model.

Claims

1. A sludge spray gun suitable for waste incinerators, Features: It comprises a gun head, an outer sleeve and an inner sleeve; the gun head comprises a gun head outer shell and a gun head seat; the inner sleeve is arranged in the outer sleeve, an air flow channel is formed between the inner wall of the outer sleeve and the outer wall of the inner sleeve, and the inner hole of the inner sleeve forms a liquid channel; One end of the gun head shell is connected to one end of the outer sleeve, and the other end is a spherical surface, a nozzle is opened on the spherical surface, and the inner side of the spherical surface is a mixing chamber; the gun head seat is arranged in the gun head shell, one end of the gun head seat is connected to the inner sleeve, and the other end is a tapered mouth with a diameter gradually increasing toward the nozzle; The liquid channel is connected with the mixing chamber through the tapered mouth, and the air flow channel is connected with the mixing chamber; the outer sleeve is provided with an air inlet connector connected with the air flow channel for connecting compressed gas, and one end of the inner hole of the inner sleeve is provided with a liquid inlet connector for connecting sludge.

2. The sludge spray gun suitable for a garbage incinerator according to claim 1, Features: The nozzle is a fan-shaped incision, and the angle of the fan-shaped incision is 15° to 20°.

3. The sludge spray gun suitable for a garbage incinerator according to claim 2, Features: The nozzle is located at the center of the spherical surface and is directly opposite to the conical mouth.

4. The sludge spray gun suitable for a garbage incinerator according to claim 1, Features: The air inlet joint is arranged on the outer wall of the outer sleeve, the inner sleeve is coaxially arranged with the outer sleeve, and a sealing head is provided at one end of the inner sleeve away from the gun head, and one end of the air flow channel is blocked by the sealing head.

5. The sludge spray gun suitable for a garbage incinerator according to claim 1, Features: The outer wall of the tapered mouth is also tapered, and a constriction structure is formed between the outer wall of the tapered mouth and the inner wall of the gun head shell. The gas in the airflow channel is accelerated by the constriction structure and enters the mixing chamber.

6. The sludge spray gun suitable for a garbage incinerator according to claim 1, Features: A guide impeller is arranged in the air flow channel; the guide impeller comprises a base and a plurality of spiral blades fixed on the base and distributed in a circular array; the base is fixedly connected to the inner sleeve and is located at one end of the inner sleeve close to the gun head seat.

7. The sludge spray gun suitable for a garbage incinerator according to claim 6, Features: One or more guide vanes are provided in the air flow channel.

8. The sludge spray gun suitable for a garbage incinerator according to claim 1, Features: The mixing chamber is conical, and its diameter gradually decreases from the conical mouth to the nozzle.

9. The sludge spray gun suitable for a garbage incinerator according to claim 1, Features: The gun head, outer sleeve and inner sleeve are made of 310S stainless steel.

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