Reinforced atomizing type fire-retardant oil spray gun

Abstract

The utility model discloses a kind of reinforced atomization type flame-retardant oil spray guns, it is related to spray gun field, including spray gun main body, spray gun main body end portion is threadedly installed with spray head, the inside of spray head is equipped with atomization enhancement structure, the atomization enhancement structure includes first atomization cavity and second atomization cavity that are sequentially set in the inside of spray head along flame-retardant oil flow direction, the inside of spray head is equipped with transition block, the end portion of spray head is equipped with atomization outlet. The reinforced atomization type flame-retardant oil spray gun, realize the grading reinforcement atomization of flame-retardant oil, the spiral groove in first atomization cavity makes flame-retardant oil form high-speed rotating vortex in flow, with the gas that enters preliminary mixing and break into small droplet;Conical transition block makes oil mist flow velocity promote, after entering second atomization cavity, with the raised edge strip of gradually changing thickness, produce sustained collision, shear, further refine particle, solved the problem of atomization insufficiency caused by simple gas-liquid mixing, significantly improved atomization uniformity and delicacy.

Description

Technical Field

[0001] This utility model relates to the field of spray gun technology, specifically to an enhanced atomization type fire-retardant spray gun. Background Technology

[0002] A fire-retardant oil spray gun is a specialized device used to spray fire-retardant oil. By spraying the fire-retardant oil onto the surface of an object, it forms a flame-retardant coating, which plays a role in fire prevention, fire extinguishing, and preventing the spread of fire. During the operation of the fire-retardant oil spray gun, the atomization effect of the fire-retardant oil directly affects the flame-retardant effect. The more complete the atomization and the finer the particles, the larger the contact area between the fire-retardant oil and the sprayed surface, and the better the flame-retardant effect.

[0003] In the prior art, Chinese Patent No. CN217910993U discloses a spray gun device for wood flame retardants, including a spray gun body and an auxiliary spraying device. By setting up the auxiliary spraying device, with the auxiliary spraying pipe inserted into the upper end of the support base, it can realize the auxiliary spraying of other flame retardant liquids, thereby enhancing the usability of the spray gun and realizing the auxiliary spraying of other flame retardant liquids. A clamping component is set in the middle of the upper end of the support base. With the cooperation of the pressure plate, pressure block, notch and knob, the pressure plate can be driven to realize the pressure block to clamp and reinforce the auxiliary spraying pipe, thereby achieving the advantage of clamping the auxiliary spraying pipe and strengthening the installation firmness. Furthermore, an adjustment component is set on the left side of the upper end of the support base. With the cooperation of the atomizing plate, push block, locking plate and spring plate, the atomizing plate can be moved to quickly change the spraying state of other flame retardant liquids, thereby achieving the advantage of auxiliary change of the spraying state of other flame retardant liquids.

[0004] Based on the above information, existing spray guns typically use simple gas-liquid mixing to achieve atomization when spraying fire-retardant oil, which results in insufficient atomization and uneven particle size, affecting the effectiveness of the fire-retardant oil. Therefore, we propose an enhanced atomization fire-retardant oil spray gun. Utility Model Content

[0005] The purpose of this invention is to provide an enhanced atomization type fire-retardant oil spray gun to solve the problems mentioned in the background art, where existing spray guns typically use simple gas-liquid mixing to achieve atomization when spraying fire-retardant oil, resulting in insufficient atomization and uneven particle size, which affects the effectiveness of the fire-retardant oil.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a reinforced atomization type fire-retardant oil spray gun, comprising a spray gun body, an oil inlet connection end and an air inlet connection end provided on the outer wall of the spray gun body, a nozzle threadedly installed at the end of the spray gun body, an atomization enhancement structure provided inside the nozzle, the atomization enhancement structure comprising a first atomization chamber and a second atomization chamber sequentially opened inside the nozzle along the flow direction of the fire-retardant oil, a transition block provided inside the nozzle, and an atomization outlet opened at the end of the nozzle.

[0007] Furthermore, the spray gun body has an oil inlet channel and an air inlet channel inside, and the oil inlet channel and the air inlet channel are respectively connected to the oil inlet connection end and the air inlet connection end. The first atomizing chamber is connected to both the oil inlet channel and the air inlet channel.

[0008] Furthermore, a sealing gasket is provided at the connection between the nozzle and the spray gun body, and anti-slip ridges are provided on the outer wall of the nozzle, with the anti-slip ridges distributed at equal angles.

[0009] Furthermore, the transition block is located between the first atomizing chamber and the second atomizing chamber, and the transition block is generally tapered. The large-diameter end of the transition block is connected to the first atomizing chamber, and the small-diameter end of the transition block is connected to the second atomizing chamber.

[0010] Furthermore, the inner wall of the first atomizing chamber is provided with a turbulence block, and an axial through hole is provided at the center of the turbulence block. The inner wall of the axial through hole is provided with a groove. The groove is designed in a spiral shape and is distributed at equal angles. The pitch of the groove near the transition block end is smaller than the pitch of the other end of the groove.

[0011] Furthermore, the inner wall of the second atomizing chamber is provided with raised ribs distributed at equal angles, and the raised ribs extend along the axial direction of the second atomizing chamber, and the thickness of the raised ribs gradually increases from the end near the transition block to the end away from the transition block.

[0012] Furthermore, the atomizing outlet is connected to the second atomizing chamber, and an atomizing baffle is provided inside the atomizing outlet. The atomizing baffle has a circular cross-section and notches distributed at equal angles on its inner wall.

[0013] Compared with the prior art, the beneficial effects of this utility model are:

[0014] 1. This enhanced atomization type fire-retardant oil spray gun achieves graded enhanced atomization of the fire-retardant oil through an atomization enhancement structure composed of a first atomization chamber, a second atomization chamber, and a transition block. The spiral groove design in the first atomization chamber with a gradually changing pitch causes the fire-retardant oil to form a high-speed rotating vortex during flow, which initially mixes with the incoming gas and breaks it into fine droplets. The conical transition block increases the flow velocity of the oil mist. After entering the second atomization chamber, it continuously collides and shears with the gradually thickened raised ridges, further refining the particles. This solves the problem of insufficient atomization caused by simple gas-liquid mixing in the prior art, significantly improving the uniformity and fineness of atomization, thereby increasing the contact area between the fire-retardant oil and the sprayed surface and improving the flame-retardant effect.

[0015] 2. The annular atomizing baffle and the equally angled notches at the atomization outlet can further rectify and divert the oil mist after secondary atomization, making the atomized particles more evenly distributed and the coverage more stable. This enhances the atomization effect, eliminates the need for additional adjustments, simplifies the usage process, improves work efficiency, and better adapts to the stable requirements of fire-retardant fuel injection in different scenarios.

[0016] 3. The spray gun body and nozzle are connected by threads, and the sealing gasket ensures the sealing of the connection, avoiding waste and pollution caused by oil leakage. The anti-slip ridge design on the outer wall of the nozzle makes it easy for operators to install and remove the nozzle for cleaning or replacement, improving the convenience of equipment maintenance. At the same time, the oil inlet connection end and the air inlet connection end are respectively connected to the oil inlet channel and air inlet channel inside the spray gun body. The reasonable structural layout ensures stable gas-liquid transportation and provides a reliable fluid supply foundation for efficient atomization. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0018] Figure 2 This is a schematic diagram of the cross-sectional structure of the spray gun body and the nozzle of this utility model;

[0019] Figure 3 This is a schematic diagram of the nozzle structure of this utility model;

[0020] Figure 4 This is a schematic diagram of the main structure of the spray gun of this utility model;

[0021] Figure 5 This is a schematic diagram of the internal structure of the nozzle of this utility model;

[0022] Figure 6 This is a schematic diagram of the cross-sectional structure of the transition block and the turbulence block of this utility model;

[0023] Figure 7 This is a schematic diagram of the atomizing block structure of this utility model.

[0024] In the diagram: 1. Spray gun body; 2. Nozzle; 201. Anti-slip ridge; 3. Oil inlet connection end; 301. Oil inlet channel; 4. Air inlet connection end; 401. Air inlet channel; 5. Sealing gasket; 6. First atomizing chamber; 601. Baffle block; 602. Groove; 7. Second atomizing chamber; 701. Raised ridge; 8. Transition block; 9. Atomizing outlet; 901. Atomizing baffle; 902. Notch. Detailed Implementation

[0025] 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.

[0026] Example 1: Please refer to Figures 1-6 The present invention provides the following technical solution: an enhanced atomization type fire-retardant oil spray gun, including a spray gun body 1, an oil inlet connection end 3 and an air inlet connection end 4 on the outer wall of the spray gun body 1, a nozzle 2 threadedly installed at the end of the spray gun body 1, and an atomization enhancement structure inside the nozzle 2, the atomization enhancement structure including a first atomization chamber 6 and a second atomization chamber 7 sequentially opened inside the nozzle 2 along the flow direction of the fire-retardant oil.

[0027] like Figures 1-4 As shown, the spray gun body 1 has an oil inlet channel 301 and an air inlet channel 401 inside, and the oil inlet channel 301 and the air inlet channel 401 are respectively connected to the oil inlet connection end 3 and the air inlet connection end 4. The first atomizing chamber 6 is connected to both the oil inlet channel 301 and the air inlet channel 401. A sealing gasket 5 is provided at the connection between the nozzle 2 and the spray gun body 1. The outer wall of the nozzle 2 is provided with anti-slip ridges 201, and the anti-slip ridges 201 are distributed at equal angles.

[0028] like Figures 1-6 As shown, the inner wall of the first atomizing chamber 6 is provided with a turbulence block 601, and an axial through hole is provided at the center of the turbulence block 601. The inner wall of the axial through hole is provided with a groove 602. The groove 602 is spirally designed and is distributed at equal angles. The pitch of the groove 602 near the transition block 8 is smaller than the pitch of the other end of the groove 602.

[0029] Before operation, the nozzle 2 is securely installed at the end of the spray gun body 1 via a threaded connection between the nozzle 2 and the spray gun body 1. The sealing gasket 5 ensures the sealing performance of the connection and prevents leakage of the flame-retardant oil or gas during operation. During operation, the flame-retardant oil enters the oil inlet channel 301 inside the spray gun body 1 through the oil inlet connection end 3, while the compressed gas enters the air inlet channel 401 through the air inlet connection end 4. The two are respectively delivered to the first atomization chamber 6 and initially converge here. In the first atomization chamber 6, the flame-retardant oil flows through the axial through hole in the center of the turbulence block 601. The spiral groove 602 with a gradually changing pitch on the inner wall of the through hole guides the oil, causing the oil to form a high-speed rotating vortex during the flow. As the pitch of the groove 602 gradually decreases from the end away from the transition block 8 to the end closer to the transition block 8, the rotation speed of the oil continuously increases, and it mixes and collides fully with the compressed gas that enters the first atomization chamber 6 at the same time, initially breaking it into fine droplets, completing the first stage of atomization.

[0030] Example 2: Please refer to Figures 1-7 Based on Embodiment 1, the following structure is also disclosed: a transition block 8 is provided inside the nozzle 2, and an atomization outlet 9 is provided at the end of the nozzle 2. The transition block 8 is located between the first atomization chamber 6 and the second atomization chamber 7, and the transition block 8 is generally designed in a conical shape. The large diameter end of the transition block 8 is connected to the first atomization chamber 6, and the small diameter end of the transition block 8 is connected to the second atomization chamber 7.

[0031] like Figures 1-6 As shown, the inner wall of the second atomizing chamber 7 is provided with raised ribs 701 distributed at equal angles, and the raised ribs 701 extend along the axial direction of the second atomizing chamber 7, and the thickness of the raised ribs 701 gradually increases from the end near the transition block 8 to the end away from the transition block 8.

[0032] like Figure 2 , Figure 5 and Figure 7 As shown, the atomizing outlet 9 is connected to the second atomizing chamber 7, and the atomizing outlet 9 is provided with an atomizing block 901 inside. The atomizing block 901 has a circular cross-section and the inner wall of the atomizing block 901 has notches 902 distributed at equal angles.

[0033] After primary atomization, the oil mist enters the conical transition block 8. Since the small diameter end of the transition block 8 faces the second atomization chamber 7, the space of the oil mist gradually contracts as it passes through the transition block 8, and the flow velocity is significantly increased, forming a high-speed oil mist jet that enters the second atomization chamber 7.

[0034] Inside the second atomizing chamber 7, the high-speed flowing oil mist jet will continuously collide and shear with the raised ribs 701 distributed at equal angles on the inner wall. As the thickness of the raised ribs 701 gradually increases from the end near the transition block 8 to the end away from the transition block 8, the obstruction and disturbance of the oil mist flow gradually increase, which promotes the further breaking and refining of the oil mist particles, thus achieving secondary enhanced atomization.

[0035] The oil mist that has completed the secondary atomization finally enters the atomization outlet 9. Under the action of the annular atomizing baffle 901, the oil mist is evenly distributed to each notch 902 on the inner wall of the baffle. After being sprayed out through the notch 902, it forms a uniformly distributed and stably covered atomized oil mist, thus efficiently spraying it onto the surface to be coated.

[0036] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "connected" and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0037] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A reinforced atomization type fire-retardant oil spray gun, comprising a spray gun body (1), wherein the outer wall of the spray gun body (1) is provided with an oil inlet connection end (3) and an air inlet connection end (4), and a nozzle (2) is threadedly installed at the end of the spray gun body (1), characterized in that: The nozzle (2) is provided with an atomization enhancement structure, which includes a first atomization chamber (6) and a second atomization chamber (7) sequentially opened inside the nozzle (2) along the direction of flame flow of the flame-retardant oil. The nozzle (2) is provided with a transition block (8), and the nozzle (2) is provided with an atomization outlet (9) at its end.

2. The enhanced atomization type fire-retardant oil spray gun according to claim 1, characterized in that: The spray gun body (1) has an oil inlet channel (301) and an air inlet channel (401) inside, and the oil inlet channel (301) and the air inlet channel (401) are respectively connected to the oil inlet connection end (3) and the air inlet connection end (4). The first atomizing chamber (6) is connected to both the oil inlet channel (301) and the air inlet channel (401).

3. The enhanced atomization type fire-retardant oil spray gun according to claim 1, characterized in that: A sealing gasket (5) is provided at the connection between the nozzle (2) and the spray gun body (1). The outer wall of the nozzle (2) is provided with anti-slip ridges (201), and the anti-slip ridges (201) are distributed at equal angles.

4. The enhanced atomization type fire-retardant oil spray gun according to claim 1, characterized in that: The transition block (8) is located between the first atomizing chamber (6) and the second atomizing chamber (7), and the transition block (8) is generally tapered. The large diameter end of the transition block (8) is connected to the first atomizing chamber (6), and the small diameter end of the transition block (8) is connected to the second atomizing chamber (7).

5. The enhanced atomization type fire-retardant oil spray gun according to claim 1, characterized in that: The inner wall of the first atomizing chamber (6) is provided with a turbulence block (601), and an axial through hole is provided at the center of the turbulence block (601). The inner wall of the axial through hole is provided with a groove (602). The groove (602) is designed in a spiral shape and is distributed at equal angles. The pitch of the groove (602) near the end of the transition block (8) is smaller than the pitch of the other end of the groove (602).

6. The enhanced atomization type fire-retardant oil spray gun according to claim 1, characterized in that: The inner wall of the second atomizing chamber (7) is provided with raised ribs (701) distributed at equal angles, and the raised ribs (701) extend along the axial direction of the second atomizing chamber (7), and the thickness of the raised ribs (701) gradually increases from the end near the transition block (8) to the end away from the transition block (8).

7. The enhanced atomization type fire-retardant oil spray gun according to claim 1, characterized in that: The atomizing outlet (9) is connected to the second atomizing chamber (7), and an atomizing baffle (901) is provided inside the atomizing outlet (9). The atomizing baffle (901) has a circular cross-section and a notch (902) with equal angle distribution on the inner wall of the atomizing baffle (901).

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