Anti-reflux nozzle of air cannon
By designing an anti-backflow nozzle structure, the problem of reverse flow in the nozzle is solved, achieving stable operation of the equipment and reducing costs. It is suitable for industries such as cement, metallurgy, chemical, coal, power, mining and steel.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- HERMAN NANJING TECHN & ENG PTE
- Filing Date
- 2025-05-13
- Publication Date
- 2026-04-24
AI Technical Summary
The material tends to flow backwards during use of existing nozzles, leading to equipment failure and increased maintenance costs.
A backflow prevention nozzle structure was designed, which includes a nozzle flange, an angle tube, a flow stop tube, and a horizontal nozzle. By forming a specific angle and structure inside the nozzle, the material is prevented from flowing backward.
It effectively prevents materials from flowing backward, reduces equipment failure and maintenance costs, and improves equipment operational stability.
Smart Images

Figure CN224157114U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of air cannon technology, and specifically relates to an air cannon anti-backflow nozzle. Background Technology
[0002] Due to the specific nature of the media used in existing nozzles, material can flow backwards towards the air cannon device. To address this challenging issue, this invention involves in-depth research and improvement, redesigning and optimizing the nozzle structure, and employing a special anti-backflow device to effectively prevent material backflow. Through practical testing and application, the improved nozzle demonstrates superior performance in various situations, reducing equipment malfunctions and maintenance costs caused by material backflow, and making a significant contribution to the stable operation of the equipment.
[0003] This invention aims to solve the problem of material flowing backward through nozzles in various equipment. The nozzle provided by this invention is widely used in industries such as cement, metallurgy, chemical, coal, power, mining, coking, and steel. Utility Model Content
[0004] This invention provides an anti-backflow nozzle for air cannons to solve the problems in the prior art.
[0005] To achieve the above objectives, the present invention adopts the following technical solution:
[0006] An anti-backflow nozzle for an air cannon includes an anti-backflow nozzle body 7 mounted on an air cannon 1. The anti-backflow nozzle body 7 includes a nozzle flange 2, an angle tube 3, a flow stop tube 4, a horizontal nozzle 5, and a flat nozzle 6 connected in sequence.
[0007] The angle tube 3 includes a first horizontal tube 31 and a downwardly inclined first inclined tube 32 arranged in sequence.
[0008] The flow-stopping pipe 4 includes a second inclined pipe 41, a third inclined pipe 42 and a fourth inclined pipe 43 arranged in a downward inclined manner in sequence;
[0009] One end of the first horizontal pipe 31 is connected to the air cannon 1 through the nozzle flange 2. The other end of the first horizontal pipe 31 is connected to one end of the first inclined pipe 32. The other end of the first inclined pipe 32 is inserted into one end of the second inclined pipe 41. The other end of the second inclined pipe 41 is connected to one end of the fourth inclined pipe 43 through the third inclined pipe 42. The other end of the fourth inclined pipe 43 is connected to the flat nozzle 6 through the horizontal nozzle 5.
[0010] Furthermore, the diameter of the first inclined tube 32 is smaller than the diameter of the second inclined tube 41.
[0011] Furthermore, the diameter of the third inclined tube 42 gradually decreases from one end near the second inclined tube 41 to one end near the fourth inclined tube 43.
[0012] Furthermore, the minimum diameter of the third inclined tube 42 is not greater than the diameter of the first inclined tube 32.
[0013] Furthermore, the horizontal nozzle 5 is inserted into the flat nozzle 6.
[0014] Furthermore, the nozzle flange 2 is fastened to the air cannon 1 by bolts.
[0015] Furthermore, the nozzle flange 2 is welded to the angle tube 3, the angle tube 3 is welded to the flow stop tube 4, the flow stop tube 4 is welded to the horizontal nozzle 5, and the horizontal nozzle 5 is welded to the flat nozzle 6.
[0016] Furthermore, one end of the flat nozzle 6 near the horizontal nozzle 5 is round, and the other end of the flat nozzle 6 far from the horizontal nozzle 5 is elongated. The diameter of the flat nozzle 6 gradually lengthens from one end near the horizontal nozzle 5 to one end far from the horizontal nozzle 5, becoming flat.
[0017] Furthermore, the bottom plate of the flat nozzle 6 is horizontal, and the top plate of the flat nozzle 6 gradually descends from one end near the horizontal nozzle 5 to one end far from the horizontal nozzle 5.
[0018] Furthermore, a plurality of longitudinal support plates 63 are provided between the bottom plate 61 and the top plate 62, and a transverse support plate 64 is also provided on the longitudinal support plate 63; a plurality of flow dividers 65 are provided at one end of the flat nozzle 6 and the horizontal nozzle 5.
[0019] Compared with the prior art, the present invention has the following beneficial effects:
[0020] 1. When the air cannon is working, the material will flow in reverse. By adding a flow stop pipe 4 to the horizontal nozzle, the reverse flow material is isolated at the bottom of the flow stop pipe 4, thereby preventing the material from entering the air cannon.
[0021] 2. Increase the angle on the angle tube 3 and the flow stop tube 4 to form an angle with the horizontal nozzle 5, further preventing material from entering the air cannon equipment. Attached Figure Description
[0022] Figure 1 This is a schematic diagram of the structure of this utility model;
[0023] Figure 2 This is a top view of the present invention;
[0024] Figure 3 This is a three-dimensional structural schematic diagram of the present invention;
[0025] Figure 4 This is a diagram showing the usage state of this utility model;
[0026] Figure 5 This is a top view of the utility model in use;
[0027] Figure 6 This is a three-dimensional structural diagram of the utility model in use;
[0028] Figure 7 This is a magnified view of a portion of the structure of this utility model;
[0029] Figure 8 This is a schematic diagram of the flat nozzle in this utility model;
[0030] Figure 9 This is a magnified view of a portion of the flat nozzle in this utility model;
[0031] Among them: 1-Air cannon, 2-Nozzle flange, 3-Angle tube, 31-First horizontal tube, 32-First inclined tube, 4-Stop tube, 41-Second inclined tube, 42-Third inclined tube, 43-Fourth inclined tube, 5-Horizontal nozzle, 6-Flat nozzle, 61-Base plate, 62-Top plate, 63-Longitudinal support plate, 64-Transverse support plate, 65-Diverter plate, 7-Anti-backflow nozzle body. Detailed Implementation
[0032] The present invention will be further described below with reference to the embodiments.
[0033] like Figure 1-7 As shown, an anti-backflow nozzle for an air cannon includes an anti-backflow nozzle body 7 mounted on an air cannon 1. The anti-backflow nozzle body 7 includes a nozzle flange 2, an angle tube 3, a flow-stopping tube 4, a horizontal nozzle 5, and a flat nozzle 6 connected in sequence. The angle tube 3 includes a first horizontal tube 31 and a downwardly inclined first inclined tube 32 arranged in sequence. The flow-stopping tube 4 includes a second inclined tube 41, a third inclined tube 42, and a fourth inclined tube 43 arranged in sequence with downward inclination. One end of the first horizontal tube 31 is connected to the air cannon 1 through the nozzle flange 2, and the other end of the first horizontal tube 31 is connected to one end of the first inclined tube 32. The other end of the first inclined tube 32 is inserted into one end of the second inclined tube 41. The other end of the second inclined tube 41 is connected to one end of the fourth inclined tube 43 through the third inclined tube 42. The other end of the fourth inclined tube 43 is connected to the flat nozzle 6 through the horizontal nozzle 5. The horizontal nozzle 5 is inserted into the flat nozzle 6.
[0034] As a preferred embodiment, the diameter of the first inclined tube 32 is smaller than the diameter of the second inclined tube 41, and the diameter of the third inclined tube 42 gradually decreases from one end near the second inclined tube 41 to one end near the fourth inclined tube 43, and the minimum diameter of the third inclined tube 42 is not greater than the diameter of the first inclined tube 32.
[0035] As a preferred embodiment, the nozzle flange 2 is fastened to the air cannon 1 by bolts; the nozzle flange 2 is welded to the angle tube 3, the angle tube 3 is welded to the flow stop tube 4, the flow stop tube 4 is welded to the horizontal nozzle 5, and the horizontal nozzle 5 is welded to the flat nozzle 6.
[0036] As a preferred embodiment, the outer periphery of the horizontal nozzle 5 can also be supported by a support plate and a support frame to increase the stability of the anti-backflow nozzle body 7.
[0037] like Figure 8-9 As shown, in a preferred embodiment, one end of the flat nozzle 6 near the horizontal nozzle 5 is circular, and the other end far from the horizontal nozzle 5 is elongated, with the diameter gradually lengthening from the near-horizontal nozzle 5 end to the far-horizontal nozzle 5 end, forming a flat shape. The bottom plate of the flat nozzle 6 is horizontal, and the top plate of the flat nozzle 6 gradually descends from the near-horizontal nozzle 5 end to the far-horizontal nozzle 5 end. Several longitudinal support plates 63 are provided between the bottom plate 61 and the top plate 62, and transverse support plates 64 are also provided on the longitudinal support plates 63. The number and arrangement of the longitudinal support plates 63 and transverse support plates 64 are not specifically limited; their function is to support the space between the bottom plate 61 and the top plate 62, making the material flow through the flat nozzle 6 more stable. Several flow dividers 65 are provided at the far-horizontal nozzle 6 end. Preferably, the flat nozzle 6 is shaped like a broom head.
[0038] The assembly process of the anti-backflow nozzle of the air cannon in this utility model includes the following steps:
[0039] Step 1: Weld the nozzle flange 2 to the angle tube 3, insert the end of the first inclined tube 32 into the stop tube 4, and then weld it firmly.
[0040] Step 2: Securely weld the end of the stop pipe 4 obtained in Step 1 to the horizontal nozzle 5;
[0041] Step 3: Slightly insert the end of the horizontal nozzle 5 of the weld obtained in Step 2 into the flat nozzle 6, and then weld it firmly.
[0042] Step 4: Secure the welded anti-backflow nozzle body 7 obtained in Step 3 to the air cannon 1 with bolts.
[0043] Due to the specific nature of the medium used in existing nozzles, material can flow backwards towards the air cannon device. To address this challenging issue, this invention involves in-depth research and improvement, redesigning and optimizing the nozzle structure, and employing a special anti-backflow device to effectively prevent material backflow. Practical testing and application have demonstrated the superior performance of the improved nozzle in various situations, reducing equipment malfunctions and maintenance costs caused by material backflow, and making a significant contribution to the stable operation of the equipment.
[0044] This invention aims to solve the problem of material flowing backward through nozzles in various equipment. The nozzle provided by this invention is widely used in industries such as cement, metallurgy, chemical, coal, power, mining, coking, and steel.
[0045] This invention addresses the current state of nozzles by providing a nozzle that is anti-backflow, highly efficient, high-performing, and low-maintenance, thereby significantly improving the product's cost-effectiveness.
[0046] This utility model has the following beneficial effects:
[0047] 1. When the air cannon is working, the material will flow in reverse. By adding a flow stop pipe 4 to the horizontal nozzle, the reverse flow material is isolated at the bottom of the flow stop pipe 4, thereby preventing the material from entering the air cannon.
[0048] 2. Increase the angle on the angle tube 3 and the flow stop tube 4 to form an angle with the horizontal nozzle 5, further preventing material from entering the air cannon equipment.
[0049] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of the present utility model, and these improvements and modifications should also be considered within the protection scope of the present utility model.
Claims
1. An anti-backflow nozzle for an air cannon, comprising an anti-backflow nozzle body (7) mounted on an air cannon (1), characterized in that: The anti-backflow nozzle body (7) includes a nozzle flange (2), an angle tube (3), a flow stop tube (4), a horizontal nozzle (5), and a flat nozzle (6) connected in sequence. The angle tube (3) includes a first horizontal tube (31) and a first inclined tube (32) that are arranged in sequence and tilted downward. The flow-stopping tube (4) includes a second inclined tube (41), a third inclined tube (42) and a fourth inclined tube (43) arranged in a downward inclined manner in sequence. One end of the first horizontal tube (31) is connected to the air cannon (1) through the nozzle flange (2), the other end of the first horizontal tube (31) is connected to one end of the first inclined tube (32), the other end of the first inclined tube (32) is inserted into one end of the second inclined tube (41), the other end of the second inclined tube (41) is connected to one end of the fourth inclined tube (43) through the third inclined tube (42), and the other end of the fourth inclined tube (43) is connected to the flat nozzle (6) through the horizontal nozzle (5).
2. The anti-backflow nozzle for an air cannon according to claim 1, characterized in that: The diameter of the first inclined tube (32) is smaller than the diameter of the second inclined tube (41).
3. The anti-backflow nozzle for an air cannon according to claim 2, characterized in that: The diameter of the third inclined tube (42) gradually decreases from one end near the second inclined tube (41) to one end near the fourth inclined tube (43).
4. The anti-backflow nozzle for an air cannon according to claim 3, characterized in that: The diameter of the third inclined tube (42) at its minimum point is no greater than the diameter of the first inclined tube (32).
5. The anti-backflow nozzle for an air cannon according to claim 1, characterized in that: The horizontal nozzle (5) is inserted into the flat nozzle (6).
6. The anti-backflow nozzle for an air cannon according to claim 1, characterized in that: The nozzle flange (2) is fastened to the air cannon (1) by bolts.
7. The anti-backflow nozzle for an air cannon according to claim 1, characterized in that: The nozzle flange (2) is welded to the angle tube (3), the angle tube (3) is welded to the stop tube (4), the stop tube (4) is welded to the horizontal nozzle (5), and the horizontal nozzle (5) is welded to the flat nozzle (6).
8. The anti-backflow nozzle for an air cannon according to claim 7, characterized in that: The flat nozzle (6) has a round end near the horizontal nozzle (5) and a long strip end far from the horizontal nozzle (5). The diameter of the flat nozzle (6) gradually lengthens from the end near the horizontal nozzle (5) to the end far from the horizontal nozzle (5) and becomes flat.
9. The anti-backflow nozzle for an air cannon according to claim 8, characterized in that: The bottom plate (61) of the flat nozzle (6) is horizontal, and the top plate (62) of the flat nozzle (6) gradually descends from one end of the near-horizontal nozzle (5) to one end of the far-horizontal nozzle (5).
10. The anti-backflow nozzle for an air cannon according to claim 9, characterized in that: A plurality of longitudinal support plates (63) are provided between the bottom plate (61) and the top plate (62), and a transverse support plate (64) is also provided on the longitudinal support plate (63); a plurality of diverter plates (65) are provided at one end of the flat nozzle (6) far from the horizontal nozzle (5).