Sludge atomizing spray gun

Abstract

The utility model discloses a sludge atomizing spray gun, and belongs to the technical field of sludge treatment. A nozzle is arranged at the front end of an inner pipe, and the rear end of the inner pipe is used for feeding; the air pipe penetrates into the inner pipe, and the rear end of the air pipe is connected with a high-pressure air connector; a sludge channel is formed between the air pipe and the inner pipe; an air outlet nozzle communicated to the sludge channel is arranged at the front end of the air pipe; the diffuser is arranged at the front end of the air pipe; a jet channel communicated with the sludge channel is formed between the diffuser and the nozzle; the outer pipe is sleeved outside the inner pipe; a cooling channel is formed between the outer pipe and the inner pipe, and the front end of the cooling channel is connected with a cooling tuyere; the cooling air joint is communicated to the cooling channel; and the cleaning gas joint and the diluent joint are respectively communicated to the sludge channel. The spray gun achieves efficient atomization of sludge through the diverging device, the spraying area is increased, the combustion efficiency is improved, the position of an air pipe can be adjusted to control the spraying amount, and blockage is prevented. A cooling and cleaning structure is matched to cool and clean the spray gun, so that the stable and efficient operation of the spray gun is ensured.

Description

TECHNICAL FIELD

[0001] The utility model relates to sludge and other semi -fluid solid waste treatment technical field, concretely relates to a sludge atomization spray gun, be applicable to paste solid waste, oil sludge and other semi -fluid solid waste, leachate and so on wastewater treatment. BACKGROUND

[0002] In the field of sludge treatment, especially in the process of sludge incineration, sludge drying and sludge resource utilization, the atomization injection technology of sludge is one of the key links. The traditional sludge treatment mode often has problems such as low treatment efficiency, high energy consumption and large pollution emission, which cannot meet the needs of modern environmental protection and efficient treatment. The existing atomization spray gun has the following problems:

[0003] The nozzle structure adopts simple cone shape, cannot form good cooperation with high-pressure air, and the atomization effect is limited, which is difficult to achieve ideal spraying area and combustion efficiency.

[0004] The high temperature generated by the spray gun during the working process also damages the internal components; when the spray gun is not working, the spray gun needs to be removed to avoid the internal sludge of the spray gun from drying, which is complicated to operate and inconvenient to use. UTILITY MODEL CONTENTS

[0005] In view of the above technical deficiencies, the utility model provides a sludge atomization spray gun.

[0006] The utility model adopts the following technical scheme: a sludge atomization spray gun, comprising:

[0007] An inner tube, the inner tube is provided with a nozzle at the front end, and the rear end of the inner tube is used for feeding;

[0008] A gas pipe is arranged in the inner tube, and a high-pressure gas connector is connected to the rear end of the gas pipe; the gas pipe and the inner tube form a sludge channel, and the front end of the gas pipe is provided with an air outlet nozzle connected to the sludge channel;

[0009] A diverging device is arranged at the front end of the gas pipe; the diverging device and the nozzle form a spraying channel communicated with the sludge channel;

[0010] An outer tube is sleeved on the outer tube; the outer tube and the inner tube form a cooling channel, and the front end of the cooling channel is connected with a cooling air nozzle;

[0011] A cooling air connector is connected to the cooling channel;

[0012] A cleaning gas connector and a dilution liquid connector are respectively connected to the sludge channel;

[0013] A pressure transmitter is installed on the inner tube for detecting the material pressure in the inner tube;

[0014] A temperature transmitter is installed on the outer pipe to detect the temperature in the outer pipe.

[0015] Further, the nozzle comprises an inner nozzle fixed to the front end of the inner pipe and an outer nozzle fixed to the front end of the inner nozzle; the inner wall of the inner nozzle is a tapered cylinder with a wide inner part and a narrow outer part, and the inner wall of the outer nozzle is a tapered cylinder with a narrow inner part and a wide outer part; the lower side of the outer nozzle has an outwardly extending outer edge;

[0016] The front end of the divergent device is a tapered cylinder matched with the outer nozzle, and the circumferential surface of the front end of the divergent device is provided with uniformly distributed flow guide grooves opposite to the inner wall of the outer nozzle.

[0017] The air outlet nozzle comprises a guide cylinder, the front end of the guide cylinder has a wind collecting cavity, and a circle of uniformly distributed jet air outlets is formed on the front end of the guide cylinder; the jet air outlets are obliquely formed and face the jet channel;

[0018] The guide cylinder is slidingly installed in a support fixed to the inner pipe; the rear end of the guide cylinder is fixedly connected to the air pipe, and a mounting hole for mounting the divergent device is formed at the central position of the front end of the guide cylinder.

[0019] The rear end of the inner pipe is connected to a feeding joint, the rear end of the inner pipe has a bending part, and the bending part is fixed with a sliding seat;

[0020] The rear end of the air pipe is slidingly arranged in the sliding seat, and the rear end of the air pipe is connected to a high-pressure air joint;

[0021] A regulating nut is rotatably installed on the sliding seat, the rear end of the air pipe is provided with an external thread, the regulating nut is connected to the threaded section of the air pipe, and a locking nut for positioning the regulating nut is further installed on the threaded section of the air pipe.

[0022] The outer pipe is a heat preservation pipe, the rear end of the outer pipe abuts against the step on the inner pipe; the cooling air nozzle is in the shape of a ring, a circle of uniformly distributed small holes are formed on the inner pipe; the cooling air nozzle is embedded and supported on the front end of the outer pipe, and the cooling air nozzle is fixed on the nozzle at the front end of the inner pipe through a thread.

[0023] A flange is fixedly sleeved on the outer pipe; a cooling air joint is arranged on the outer pipe, and a cleaning air joint and a dilution liquid joint are arranged on the outer pipe and the inner pipe.

[0024] A control system comprises:

[0025] The control unit is electrically connected to a first ball valve, a second ball valve, a third ball valve, a fourth ball valve, a pressure transmitter and a temperature transmitter; the pressure transmitter is used to detect the pressure of the material in the inner pipe; and the temperature transmitter is used to detect the temperature in the outer pipe.

[0026] The inlet of the first ball valve is connected to a high-pressure gas source, the outlet of the first ball valve is connected to a first check valve, and the other end of the first check valve is connected to a high-pressure gas joint;

[0027] The inlet of the second ball valve is connected to a high-pressure gas source, the outlet of the second ball valve is connected to a second check valve, and the other end of the second check valve is connected to a cleaning gas joint;

[0028] The inlet of the third ball valve is connected to a dilution liquid source, the outlet of the third ball valve is connected to a third check valve, and the other end of the third check valve is connected to a dilution liquid joint;

[0029] The inlet of the fourth ball valve is connected to a cooling air source, the outlet of the fourth ball valve is connected to a fourth check valve, and the other end of the fourth check valve is connected to a cooling air joint.

[0030] A sludge treatment method, comprising the following steps:

[0031] Step 1) material atomization injection;

[0032] After the torch is started, the control unit opens the first ball valve and the fourth ball valve, and closes the second ball valve and the third ball valve; high-pressure gas is sprayed from the air outlet nozzle, and cooling air is sprayed from the cooling air nozzle; the material is continuously fed from the rear end of the inner tube to the nozzle, and the material at the nozzle is continuously atomized and injected into the combustion chamber through the injection channel between the nozzle and the diffuser by high-pressure gas; the pressure transmitter monitors the material pressure in the inner tube in real time, and the temperature transmitter monitors the temperature in the outer tube in real time;

[0033] Step 2) material dilution;

[0034] When the moisture content of the material decreases, the pressure value detected by the pressure transmitter will increase; when the pressure value exceeds the set high pressure value, the control unit opens the third ball valve, and the dilution liquid enters the sludge channel through the dilution liquid joint to dilute the material in the sludge channel; after the material is diluted, the pressure value detected by the pressure transmitter will decrease, and when the pressure value decreases to below the set low pressure value, the control unit closes the third ball valve;

[0035] Step 3) material cleaning;

[0036] When the torch is stopped, the inner tube stops feeding, the control unit opens the third ball valve, and the dilution liquid enters the sludge channel through the dilution liquid joint to dilute the material in the sludge channel; then the first ball valve is closed and the second ball valve is opened, and the high-pressure gas enters the sludge channel through the cleaning gas joint to spray the diluted material in the sludge channel out of the nozzle, thereby emptying the sludge channel;

[0037] Step 4) shutdown cooling;

[0038] When the lance is stopped for a long time, the control unit opens the second ball valve and the fourth ball valve, and closes the first ball valve and the third ball valve; high-pressure gas enters the sludge channel through the cleaning gas joint, and cools the inner tube and the air pipe; when the temperature detected by the temperature transmitter exceeds the high set temperature, the control unit opens the third ball valve, and the dilution liquid enters the sludge channel through the dilution liquid joint, so that the inner tube and the air pipe are cooled by water and gas mixing; when the temperature detected by the temperature transmitter is lower than the low set temperature, the control unit opens the third ball valve.

[0039] Further, the material continuously fed into the rear end of the inner tube is sludge with a water content of 75%-85%;

[0040] The lance is embedded in the sidewall of the combustion chamber, and the nozzle at the front end of the inner tube and the cooling air nozzle at the front end of the outer tube are both communicated into the combustion chamber.

[0041] The dilution liquid is water and / or leachate.

[0042] In the step 1, the amount of sprayed material and the atomization effect are adjusted by controlling the position of the air pipe relative to the inner tube to change the size of the spraying channel between the diffuser and the nozzle; when the spraying channel is blocked, the blocked material is discharged by expanding the size of the spraying channel, and then the spraying channel is adjusted to the original spraying state.

[0043] The beneficial effects of the utility model lie in:

[0044] The sludge atomizing lance realizes efficient atomization of sludge by the interaction between high-pressure gas and sludge in the spraying channel formed between the nozzle and the diffuser, and the guide groove around the diffuser, significantly increases the sludge spraying area, and improves the combustion efficiency and treatment effect; the size of the spraying channel can be flexibly changed by adjusting the position of the air pipe in the inner tube, so that the amount of sprayed material and the atomization effect are adjusted, and the problem of blockage of the spraying channel can be solved to a certain extent; the cooling channel formed between the outer tube and the inner tube and the design of the cooling air nozzle effectively reduce the temperature during the operation of the lance, protect the internal components of the lance, and prolong the service life of the equipment. The cleaning gas joint and the dilution liquid joint can clean the sludge channel by high-pressure gas and dilution liquid during shutdown, avoiding the problems of blockage and corrosion caused by material residues.

[0045] The control system realizes the automatic control of the working state of the spray gun through the connection of the control unit and each valve, improves the working efficiency, and reduces the errors and risks of manual operation. The pressure transmitter and the temperature transmitter are used, so that the control system can monitor the material pressure in the inner pipe and the temperature in the outer pipe in real time, and provide accurate data support for adjusting and protecting the spray gun. The control system adjusts the state of each valve according to the detection data, realizes the functions of dilution, cleaning and cooling of the material of the spray gun, and ensures the stable operation and efficient work of the spray gun.

[0046] The sludge treatment method sprays the sludge by using the spray gun, so that the sludge is mixed and combusted with other substances in the combustion chamber, and the treatment efficiency of the sludge is improved. While treating the sludge, the emission of harmful gases and environmental pollution are reduced, which meets the environmental protection requirements. When the spray gun is stopped, the cleaning effect of the dilution liquid and the high-pressure gas can effectively avoid the residue and blockage of the sludge in the sludge channel, and protect the internal components of the spray gun. BRIEF DESCRIPTION OF DRAWINGS

[0047] In order to more clearly illustrate the technical scheme in the embodiments of the present application or the prior art, the drawings needed to be used in the embodiment or the prior art description will be briefly introduced as follows. Obviously, the drawings in the following description are only some embodiments of the present application, and for those skilled in the art, other drawings can also be obtained without creative labor on the basis of these drawings.

[0048] Figure 1 It is a front view of the sludge atomizing spray gun of the present application.

[0049] Figure 2 It is a top view of the sludge atomizing spray gun of the present application.

[0050] Figure 3 It is a front view of the air outlet nozzle in the present application.

[0051] Figure 4 It is a left view of the air outlet nozzle in the present application.

[0052] Figure 5 It is a front view of the divergent device in the present application.

[0053] Figure 6 It is a left view of the divergent device in the present application.

[0054] Figure 7 It is a front view of the cooling nozzle in the present application.

[0055] Figure 8 It is a schematic diagram of the control system of the present application.

[0056] Explanation of reference numerals in the attached diagram: 1. Outer nozzle; 2. Cooling air nozzle; 3. Inner nozzle; 4. Inner tube; 401. Slide; 5. Outer tube; 6. Flange; 7. Cleaning air connector; 8. Adjusting nut; 9. Locking nut; 10. Diverter; 101. Guide groove; 11. Air outlet nozzle; 111. Guide tube; 112. Air collection chamber; 113. Jet nozzle; 114. Bracket; 115. Mounting hole; 12. Air pipe; 13. Temperature transmitter; 14. Feed connector; 15. Pressure transmitter; 16. High-pressure air connector; 17. Cooling air connector; 18. Diluent connector;

[0057] 19. Control unit; 20. High-pressure air source; 21. Diluent source; 22. Cooling air source;

[0058] 31. First ball valve; 32. Second ball valve; 33. Third ball valve; 34. Fourth ball valve;

[0059] 41. The first check valve; 42. The second check valve; 43. The third check valve; 44. The fourth check valve. Detailed Implementation

[0060] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0061] Example 1:

[0062] like Figure 1 , Figure 2 As shown, this utility model provides a sludge atomizing spray gun. The inner tube 4 has a bend at its rear end, and a slide block 401 is fixed to the bend. A feed connector 14 is fixedly connected to the rear end of the inner tube 4 for connecting to a feeding system. A nozzle is fixed to the front end of the inner tube 4, the nozzle including an inner nozzle 3 and an outer nozzle 1; the inner nozzle 3 is welded to the front end of the inner tube 4, and the inner wall of the inner nozzle 3 is a conical cylinder with a wider inner side and a narrower outer side; the outer nozzle 1 is welded to the front end of the inner nozzle 3, and the inner wall of the outer nozzle 1 is a conical cylinder with a narrower inner side and a wider outer side, with a smooth transition between the inner walls of the outer nozzle 1 and the inner walls of the inner nozzle 3. An outwardly extending edge is present on the lower side of the outer nozzle 1.

[0063] The air pipe 12 is arranged in the center of the inner pipe 4, and the rear end of the air pipe 12 is slidably arranged in the sliding seat 401, so that the air pipe 12 can slide axially in the sliding seat 401 to adjust the position of the front end of the air pipe 12 in the inner pipe 4. The adjusting nut 8 is rotatably arranged on the sliding seat 401, and a threaded section is arranged at the rear end of the air pipe 12, and the adjusting nut 8 is connected with the threaded section of the air pipe 12. A locking nut 9 is arranged on the threaded section of the air pipe 12 to position the adjusting nut 8. The adjusting nut 8 is axially limited by the sliding seat 401, and the air pipe 12 cannot rotate relative to the sliding seat 401; when the position of the air pipe 12 needs to be adjusted, the adjusting nut 8 is rotated to push the air pipe 12 into or out of the inner pipe 4, and after the adjustment, the locking nut 9 is used to lock the adjusting nut 8.

[0064] The rear end of the air pipe 12 is connected with the high-pressure air joint 16, and the air pipe 12 and the inner pipe 4 form a sludge channel, and the front end of the sludge channel is communicated with the inner nozzle 3. The front end of the air outlet nozzle 11 is connected with the diffuser 10, and the diffuser 10 and the outer nozzle 1 form a jet channel, and the gas jetted out of the air outlet nozzle 11 is opposite to the jet channel.

[0065] As shown in the combination Figures 1 to 4 The air outlet nozzle 11 includes a guide cylinder 111, which is slidably arranged in the bracket 114 fixed on the inner wall of the inner pipe 4. The front end of the guide cylinder 111 has a wind collecting cavity 112, and a circle of inclined jet air outlets 113 is arranged on the front end of the wind collecting cavity 112, and the jet air outlets 113 are directed to the jet channel. An installation hole 115 is arranged at the center of the front end of the guide cylinder 111 to install the diffuser 10.

[0066] As shown in the combination Figure 5 And Figure 6 The rear end of the diffuser 10 is cylindrical, and the rear end of the diffuser 10 is embedded and fixed in the installation hole 115 at the front end of the guide cylinder 111. The front end of the diffuser 10 is a conical cylinder matched with the outer nozzle 1, and a plurality of flow guide grooves 101 are arranged on the circumference of the conical cylinder. By adjusting the position of the air pipe 12, the gap between the diffuser 10 and the outer nozzle 1 can be controlled.

[0067] As shown in the combination Figure 1 、 Figure 2 And Figure 7 The outer pipe 5 is a heat preservation pipe, which is sleeved on the outer pipe 4. The flange 6 is fixed on the outer pipe 5 to fix the spray gun. The cooling channel is formed between the outer pipe 5 and the inner pipe 4. The rear end of the outer pipe 5 is abutted against the step on the inner pipe 4, and the annular cooling air nozzle 2 is embedded and supported on the front end of the outer pipe 5 and is fixed on the inner nozzle 3 at the front end of the inner pipe 4 by screwing.

[0068] Cooling air joint 17 is installed in outer tube 5 and communicates to cooling channel. Cleaning gas joint 7, dilution liquid joint 18 are arranged in outer tube 5 and inner tube 4 and respectively communicate to sludge channel. Pressure transmitter 15 is installed on inner tube 4 and is used to detect material pressure in inner tube 4. Temperature transmitter 13 is installed on outer tube 5 and is used to detect temperature in outer tube 5 as reference temperature of whole lance.

[0069] Embodiment two:

[0070] On the basis of above-mentioned embodiment one, combined with Figure 8 The utility model provides a control system for controlling lance. Control system includes control unit 19, and control unit 19 is electrically connected first ball valve 31, second ball valve 32, third ball valve 33, fourth ball valve 34, pressure transmitter 15 and temperature transmitter 13 respectively. The import of first ball valve 31 is connected to high pressure gas source 20, and high pressure gas source 20 provides high pressure air, and the export of first ball valve 31 is connected with first check valve 41, and the other end of first check valve 41 is connected to high pressure gas joint 16. The import of second ball valve 32 is connected to high pressure gas source 20, and the export of second ball valve 32 is connected with second check valve 42, and the other end of second check valve 42 is connected to cleaning gas joint 7. The import of third ball valve 33 is connected to dilution liquid source 21, and dilution liquid source 21 provides water and / or percolate, and the export of third ball valve 33 is connected with third check valve 43, and the other end of third check valve 43 is connected to dilution liquid joint 18. The import of fourth ball valve 34 is connected to cooling air source 22, and cooling air source 22 provides cooling air, and the export of fourth ball valve 34 is connected with fourth check valve 44, and the other end of fourth check valve 44 is connected to cooling air joint 17.

[0071] Embodiment three:

[0072] On the basis of above-mentioned embodiment two, the utility model provides a sludge treatment method, including the following steps:

[0073] Lance is embedded on the sidewall of combustion chamber, and the nozzle of inner tube 4 and the cooling air nozzle 2 of outer tube 5 are both communicated to the combustion chamber; the combustion chamber can be a waste incinerator, a coal-fired furnace, etc.

[0074] Step 1, material atomization injection;

[0075] After the spray gun is started, the control unit 19 opens the first ball valve 31 and the fourth ball valve 34, and closes the second ball valve 32 and the third ball valve 33; high-pressure gas is sprayed from the air outlet nozzle 11, and cooling air is sprayed from the cooling air nozzle 2; the material is continuously fed from the rear end of the inner tube 4 to the nozzle, and the material at the nozzle is atomized and sprayed through the spraying channel between the nozzle and the diffuser 10 by high-pressure gas, and continuously sprayed into the combustion chamber to make the material burn. During the operation, the spray gun is cooled by the material and the cooling air, the pressure transmitter 15 monitors the material pressure in the inner tube 4 in real time, and the temperature transmitter 13 monitors the temperature in the outer tube 5 in real time.

[0076] The rear end of the inner tube 4 is continuously fed by a plunger pump delivery system, and the material is sludge with a water content of about 80%, which can be paste solid waste, semi-fluid solid waste such as oil sludge, and wastewater material such as leachate.

[0077] Step 2, material dilution;

[0078] When the water content of the material decreases, the pressure value detected by the pressure transmitter 15 will increase; when the pressure value exceeds the set high pressure value, the high pressure value is 0.2-0.25mpa, the control unit 19 opens the third ball valve 33, and the dilution liquid enters the sludge channel through the dilution liquid connector 18 to dilute the material in the sludge channel; after the material is diluted, the pressure value detected by the pressure transmitter 15 will decrease, and when the pressure value decreases to below the set low pressure value, the low pressure value is 0.05-0.1mpa, the control unit 19 closes the third ball valve 33 to stop the material dilution. The dilution liquid can use leachate in garbage, which is more complete and environmentally friendly for waste treatment.

[0079] Step 3, material cleaning;

[0080] When the spray gun is stopped, the inner tube 4 stops feeding, the control unit 19 opens the third ball valve 33, and the dilution liquid enters the sludge channel through the dilution liquid connector 18 to dilute the material in the sludge channel; then the first ball valve 31 is closed and the second ball valve 32 is opened, the high-pressure gas enters the sludge channel through the cleaning gas connector 7, and the diluted material in the sludge channel is sprayed out of the nozzle, the sludge channel is emptied, and the spray gun is prevented from being clogged by the material losing water at high temperature.

[0081] Step 4, shutdown cooling;

[0082] When the spray gun is stopped for a long time, the control unit 19 opens the second ball valve 32 and the fourth ball valve 34, and closes the first ball valve 31 and the third ball valve 33; the high-pressure gas enters the sludge channel through the cleaning gas joint 7, and cools the inner tube 4 and the gas tube 12; the cooling air enters the outer tube 5 through the cooling air joint 17, and cools the outer tube 5 and the inner tube 4; when the temperature detected by the temperature transmitter 13 exceeds the high set temperature, the high set temperature is 500-600℃, the control unit 19 opens the third ball valve 33, and the dilution liquid enters the sludge channel through the dilution liquid joint 18, so as to realize water-gas mixed cooling of the inner tube 4 and the gas tube 12; when the temperature detected by the temperature transmitter 13 is lower than the low set temperature, the low set temperature is 300-400℃, the control unit 19 opens the third ball valve 33.

[0083] In addition, during the working process, the material spraying amount and atomization effect are adjusted by controlling the position of the gas tube 12 relative to the inner tube 4, so as to change the gap size of the spraying channel between the divergent tube 10 and the nozzle.

[0084] When a large particle is mistakenly put into the spray gun and cannot be sprayed out through the nozzle, the clogging material is discharged by enlarging the size of the spraying channel, and then the spraying channel is adjusted to the original spraying state.

[0085] Obviously, those skilled in the art can make various modifications and variations to the present application without departing from the spirit and scope of the present application. Thus, if these modifications and variations of the present application belong to the scope of the claims of the present application and the equivalent technologies, the present application also intends to include these modifications and variations.

Claims

1. A sludge atomizing lance, characterized in that The utility model provides a sludge drying device, comprising: an inner tube (4) provided with a nozzle at the front end and used for feeding at the rear end; an air pipe (12) penetrating into the inner tube (4) and connected with a high-pressure air joint (16) at the rear end; the air pipe (12) and the inner tube (4) form a sludge channel, and the air pipe (12) is provided with an air outlet nozzle (11) communicating with the sludge channel at the front end; a diverging device (10) arranged at the front end of the air pipe (12); the diverging device (10) and the nozzle form a jet channel communicating with the sludge channel; an outer tube (5) sleeved on the inner tube (4); the outer tube (5) and the inner tube (4) form a cooling channel, and the cooling channel is connected with a cooling air nozzle (2) at the front end; a cooling air joint (17) communicating with the cooling channel; a cleaning air joint (7) and a dilution liquid joint (18) respectively communicating with the sludge channel; a pressure transmitter (15) installed on the inner tube (4) and used for detecting the pressure of the material in the inner tube (4); a temperature transmitter (13) installed on the outer tube (5) and used for detecting the temperature in the outer tube (5).

2. A sludge atomizing lance according to claim 1, characterized in that: The nozzle comprises an inner nozzle (3) fixed at the front end of the inner tube (4) and an outer nozzle (1) fixed at the front end of the inner nozzle (3); the inner wall of the inner nozzle (3) is a tapered cylindrical shape with a narrow inner part and a wide outer part, and the inner wall of the outer nozzle (1) is a tapered cylindrical shape with a narrow inner part and a wide outer part; the lower side of the outer nozzle (1) has an outer edge extending outward; the front end of the diverging device (10) is a tapered cylindrical shape matched with the outer nozzle (1), and the circumferential surface of the front end of the diverging device (10) is provided with uniformly distributed flow guide grooves (101) opposite to the inner wall of the outer nozzle (1).

3. A sludge atomizing lance according to claim 1, characterized in that: The air outlet nozzle (11) comprises a guide cylinder (111) provided with a wind collecting cavity (112) at the front end, and a ring of uniformly distributed jet air outlets (113) is arranged at the front end of the guide cylinder (111); the jet air outlets (113) are obliquely arranged and face the jet channel; the guide cylinder (111) is slidingly installed in a bracket (114) fixed in the inner tube (4); the rear end of the guide cylinder (111) is fixedly connected with the air pipe (12), and the front end of the guide cylinder (111) is provided with a mounting hole (115) for mounting the diverging device (10) at the central position; 4. A sludge atomizing lance according to claim 1, characterized in that: the rear end of the inner tube (4) is connected with a feeding joint (14), and the rear end of the inner tube (4) has a bending part fixed with a sliding seat (401); the rear end of the air pipe (12) slidingly penetrates into the sliding seat (401), and the rear end of the air pipe (12) is connected with the high-pressure air joint (16); a regulating nut (8) is rotatably installed on the sliding seat (401), the rear end of the air pipe (12) is provided with a thread segment, the regulating nut (8) is connected with the thread segment of the air pipe (12), and a locking nut (9) for positioning the regulating nut (8) is further installed on the thread segment of the air pipe (12).

5. A sludge atomizing lance according to claim 1, characterized in that: The outer tube (5) is a heat preservation tube, the rear end of the outer tube (5) abuts against the step on the inner tube (4); the cooling air nozzle (2) is annular, a plurality of small holes are uniformly arranged on the inner tube (4); the cooling air nozzle (2) is embedded and supported on the front end of the outer tube (5), and the cooling air nozzle (2) is fixed on the nozzle at the front end of the inner tube (4) through threads.

6. A sludge atomizing lance according to claim 1, characterized in that: The flange (6) is fixed on the outer tube (5); the cooling air joint (17) is arranged on the outer tube (5), and the cleaning gas joint (7) and the diluent liquid joint (18) are arranged on the outer tube (5) and the inner tube (4).

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