Adjustable bending-resistant liquid sulfur spray gun

Abstract

The utility model relates to the technical field of atomizing spray guns, and particularly discloses an adjustable bending-resistant liquid sulfur spray gun. Comprising a gun barrel provided with a tuyere, a nozzle installed at one end of the gun barrel and communicated with the gun barrel, a spray needle installed in the gun barrel and coaxial with the nozzle, and a driving assembly installed on the gun barrel and used for enabling the spray needle to move in the axial direction of the driving assembly. The spray needle comprises a connecting rod in transmission connection with the driving assembly and a conical structure arranged at the end, away from the driving assembly, of the connecting rod, and the large end of the conical structure is connected with the connecting rod. Under the condition that the pressure is kept unchanged, the flow of liquid sulfur sprayed out of the nozzle can be effectively adjusted, and good bending resistance is achieved.

Description

Technical Field

[0001] This utility model relates to the field of atomizing spray gun technology, and more specifically, to an adjustable anti-bending liquid sulfur spray gun. Background Technology

[0002] Sulfur-to-acid production involves atomizing liquid sulfur through a liquid sulfur spray gun and burning it in a sulfur incinerator to produce sulfur dioxide, which is then converted into sulfuric acid through a series of transformations. To ensure complete combustion of liquid sulfur, the atomization particle size must be carefully controlled. Poor atomization can easily lead to the production of sublimed sulfur, causing system failures and economic losses.

[0003] The sulfur output of a liquid sulfur spray gun is directly proportional to the square root of the pressure in front of the gun and the square of the nozzle diameter. The atomized particle size of the liquid sulfur spray gun is related to the pressure; higher pressure results in smaller particle size and better atomization, while lower pressure results in larger particle size and poorer atomization.

[0004] Since the nozzle diameter of the spray gun is fixed, the existing technology achieves the increase or decrease of sulfur output (i.e., load adjustment) by raising or lowering the pressure in front of the gun; however, sulfuric acid production units sometimes need to operate under lower loads, and lower pressures inevitably lead to poor atomization, making production operations very difficult. Utility Model Content

[0005] The technical problem to be solved by this utility model is to provide an adjustable anti-bending liquid sulfur spray gun that can effectively adjust the flow rate of liquid sulfur sprayed from the nozzle while maintaining constant pressure, and has good anti-bending performance.

[0006] The solution adopted by this utility model to solve the technical problem is:

[0007] An adjustable anti-bending liquid sulfur spray gun includes a barrel with an air vent, a nozzle installed at one end of the barrel and communicating with the barrel, a spray needle installed inside the barrel and coaxially arranged with the nozzle, and a drive assembly installed on the barrel for moving the spray needle along its axial direction.

[0008] The nozzle includes a connecting rod that is connected to the drive assembly, and a tapered structure disposed at the end of the connecting rod away from the drive assembly, the large end of the tapered structure being connected to the connecting rod.

[0009] In some possible implementations, the barrel includes a rod for mounting a drive assembly, a nozzle connected to the end of the rod away from the drive assembly and coaxially fitted outside the nozzle needle, and a swirling head fitted inside the nozzle; the swirling head is coaxially connected to the nozzle; the end of the nozzle away from the drive assembly passes through the swirling head and is used in conjunction with the nozzle.

[0010] In some possible implementations, a spiral segment for use with a swirl head is provided on the connecting rod along the axial direction; a swirl groove is formed between the spiral segment and the swirl head; one end of the swirl groove is connected to the gun barrel and the other end is connected to the nozzle.

[0011] In some possible implementations, the swirl head is provided with a through hole that cooperates with the spiral section and is fitted on the outside of the spray needle; the ends of the swirl head and the spray head near the nozzle are coplanar; and a sealing ring is provided at the end of the gun barrel near the nozzle.

[0012] In some possible implementations, the conical structure is cone-shaped, with the outer diameter of its large end matching the outer diameter of the connecting rod; the nozzle is provided with a spray hole that cooperates with the conical structure and is coaxial; the outer diameter of the spray hole is larger than the outer diameter of the connecting rod and smaller than the outer diameter of the spiral segment.

[0013] In some possible implementations, the rod includes a liquid sulfur pipe fitted outside the nozzle and having a liquid sulfur inlet, a steam circulation pipe assembly fitted outside the liquid sulfur pipe and having a steam outlet, and an air pipe fitted outside the steam circulation pipe assembly and having a vent; the drive assembly is located on the side of the liquid sulfur pipe away from the nozzle.

[0014] In some possible implementations, the steam circulation pipe assembly includes an intermediate pipe fitted outside the liquid sulfur pipe to form a steam passage one, an outer pipe fitted outside the intermediate pipe to form a steam passage two, and a nozzle seat fitted inside the outer pipe to close the ends of steam passage one and steam passage two near the nozzle; the nozzle seat is disposed between the liquid sulfur pipe and the nozzle and is respectively connected to the liquid sulfur pipe and the nozzle.

[0015] In some possible implementations, a third steam passage is formed between the intermediate pipe and the nozzle seat to connect steam passage one and steam passage two; steam ports are respectively provided on the intermediate pipe and the outer pipe.

[0016] In some possible implementations, a flange is provided on the outer pipe; the air pipe is connected to the flange at one end near the flange, and the air outlet is provided on the side of the air pipe near the flange. There are two sets of air outlets arranged symmetrically and connected to the air passage formed between the air pipe and the outer pipe.

[0017] In some possible implementations, a bracket with an internally threaded hole is provided on the outside of the liquid sulfur pipe, and an external thread for engaging with the internally threaded hole is provided on the connecting rod; the end of the connecting rod away from the tapered structure passes through the liquid sulfur pipe and connects to the drive assembly.

[0018] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0019] The cooperation between the drive component and the spray needle in this invention effectively achieves the adjustment and control of the flow rate ejected from the nozzle by controlling the movement of the spray needle along its axial direction according to the usage requirements. Compared with the prior art, pressure adjustment is not required, thus avoiding the situation where poor atomization effect occurs due to pressure adjustment.

[0020] This invention utilizes the low-temperature air from the main blower inside the sulfur incinerator furnace head to cool and protect the device by setting an air vent on the air pipe, thus preventing complete deformation.

[0021] This invention forms a swirling groove between the spiral section and the swirling head. The swirling groove is used to guide the transport of liquid sulfur, which enables the liquid sulfur to rotate at high speed and become fine droplets after being sprayed from the nozzle. It also prevents the nozzle from getting stuck or damaged due to friction when it moves back and forth along its axis.

[0022] This utility model has a simple structure and is highly practical. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the structure of this utility model;

[0024] Figure 2 This is a schematic diagram showing the connection relationship between the nozzle, spray needle, and gun barrel in this utility model;

[0025] Figure 3 This is a side view of the present invention;

[0026] The components are as follows: 1. Nozzle; 2. Sealing ring; 3. Flange; 4. Swirl head; 5. Spray head; 6. Short circuit; 7. Spray head seat; 8. Liquid sulfur pipe; 81. Inlet pipe; 9. Intermediate pipe; 10. Outer pipe; 101. Steam pipe; 11. Air pipe; 111. Air outlet; 12. Spray needle; 121. Connecting rod; 1221. Spiral section; 122. Conical structure; 13. Support; 14. Drive assembly; 15. Flange. Detailed Implementation

[0027] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. The terms "first," "second," and similar terms used in this application do not indicate any order, quantity, or importance, but are merely used to distinguish different components. Similarly, "a" or "one," etc., do not indicate a quantity limitation, but rather indicate the existence of at least one. In the implementation of this application, "and / or" describes the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, or B existing alone. In the description of the embodiments of this application, unless otherwise stated, "multiple" means two or more. For example, multiple positioning posts refer to two or more positioning posts. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0028] The present invention will now be described in detail.

[0029] like Figures 1-3 As shown:

[0030] An adjustable anti-bending liquid sulfur spray gun includes a barrel with an air outlet 111, a nozzle 1 installed at one end of the barrel and communicating with the barrel, a spray needle 12 installed inside the barrel and coaxially arranged with the nozzle 1, and a drive assembly 14 installed on the barrel for moving the spray needle 12 along its axial direction.

[0031] The nozzle 12 includes a connecting rod 121 that is connected to the drive assembly 14, and a tapered structure 122 disposed at the end of the connecting rod 121 away from the drive assembly 14, wherein the large end of the tapered structure 122 is connected to the connecting rod 121.

[0032] In use, liquid sulfur flows through the flow channel inside the gun barrel and is ejected from the gap formed between the nozzle 1 and the spray needle 12. The drive assembly 14 controls the spray needle 12 to move along its axial direction, so that the end of the spray needle 12 away from the drive assembly 14 can partially or completely pass through the nozzle 1. Due to the design of the conical structure 122, the gap formed between the nozzle 1 and the end of the spray needle 12 away from the drive assembly 14 is effectively changed. By adjusting the size of the gap, the liquid sulfur ejection flow rate can be adjusted without adjusting the pressure, effectively improving the atomization effect. Furthermore, a flange 3 is provided on the outside of the nozzle 1.

[0033] When in use, the air inlet 111 introduces the low-temperature air from the main blower inside the furnace head into the steam duct 4, thereby strengthening the low-temperature protection of the gun barrel and preventing it from deforming or bending due to heat.

[0034] Furthermore, the conical structure 122 is conical, and the outer diameter of its large end is consistent with the outer diameter of the connecting rod 121; a spray hole is provided on the nozzle 1 to cooperate with the conical structure 122 and is coaxial; the outer diameter of the spray hole is larger than the outer diameter of the connecting rod 121 and smaller than the outer diameter of the spiral section 1221; the conical design makes the manufacturing of the spray needle 12 simple, while meeting the need to change the amount of liquid sulfur produced, and allowing the amount of sulfur produced to change linearly or by an equal percentage.

[0035] In some possible embodiments, the barrel includes a rod for mounting the drive assembly 14, a nozzle 5 connected to the end of the rod away from the drive assembly 14 and coaxially mounted on the outside of the nozzle 12, and a vortex head 4 mounted inside the nozzle 5; the vortex head 4 is coaxially connected to the nozzle 1; the end of the nozzle 12 away from the drive assembly 14 passes through the vortex head 4 and is used in conjunction with the nozzle 1.

[0036] The rod is used for transporting liquid sulfur and for protecting the device using steam circulation; the nozzle 12 is fitted inside the rod and forms a liquid sulfur transport channel with the rod; the length of the nozzle 12 is greater than the length of the rod, and the end of the nozzle 12 away from the drive assembly 14 passes through the vortex head 4 and extends into the nozzle 1. Under the drive of the drive assembly 14, the end of the nozzle 1 away from the drive assembly 14 will be inserted into the nozzle orifice of the nozzle 1, thereby changing the output area of ​​liquid sulfur and realizing the control of the sulfur output according to the usage requirements.

[0037] In some possible embodiments, a spiral segment 1221 for use with a vortex head 4 is provided on the connecting rod 121 along the axial direction. A through hole is provided on the vortex head 4, and the through hole is fitted onto the outside of the spray needle 12. A vortex groove is formed between the spiral segment 1221 and the vortex head 4. One end of the vortex groove is connected to the gun barrel and the other end is connected to the spray hole of the nozzle 1. The length of the spiral segment 1221 along the axial direction of the connecting rod is less than the length of the vortex head 4. The spiral segment 1221 will be located in the through hole and will move along the axial direction of the through hole. That is, when the conical structure passes through or does not pass through the spray hole on the nozzle, the spiral segment 1221 will always be located in the through hole. The through hole and the spiral segment 1221 are fitted with a small clearance.

[0038] A swirling groove is formed between the spiral section 1221 and the swirling head 4. The swirling groove is used for the transport of liquid sulfur, which enables the liquid sulfur to rotate at high speed. After being sprayed out by the nozzle 1, it becomes a fine droplet, and the nozzle 12 will not get stuck or damaged due to friction when it moves along its axial direction.

[0039] In some possible implementations, in order to effectively achieve a sealed connection between the nozzle 1 and the gun barrel, the ends of the swirling head 4 and the nozzle 5 near the nozzle 1 are coplanar; a sealing ring 2 is provided at the end of the gun barrel near the nozzle 1; and the nozzle 5 and the nozzle seat 7 are connected by a short circuit 6.

[0040] In some possible implementations, the rod includes a liquid sulfur pipe 8 fitted outside the nozzle 12 and having a liquid sulfur inlet, a steam circulation pipe assembly fitted outside the liquid sulfur pipe 8 and having a steam outlet, and an air pipe 11 fitted outside the steam circulation pipe assembly and having an air outlet 111; the drive assembly 14 is located on the side of the liquid sulfur pipe 8 away from the nozzle 1.

[0041] The steam circulation pipe assembly includes an intermediate pipe 9 fitted outside the liquid sulfur pipe 8 to form a steam passage one, an outer pipe 10 fitted outside the intermediate pipe 9 to form a steam passage two, and a nozzle seat 7 fitted inside the outer pipe 10 to close the steam passage one and steam passage two near the nozzle 1; the nozzle seat 7 is disposed between the liquid sulfur pipe 8 and the nozzle 5 and is respectively connected to the liquid sulfur pipe 8 and the nozzle 5; the nozzle seat is provided with a hollow structure for communicating the liquid sulfur pipe 8 and the nozzle 5.

[0042] Specifically, the nozzle seat 7 is welded to the outer tube 10 to form a whole, and is fitted on the outside of the liquid sulfur pipe 8 and welded to the liquid sulfur pipe 8, thereby sealing the end of the outer tube 10 and the inner tube away from the drive assembly 14, so that the steam circulates in steam passage one and steam passage two.

[0043] In some possible implementations, a third steam passage is formed between the intermediate pipe 9 and the nozzle seat 7 to connect the first steam passage and the second steam passage; steam ports are respectively provided on the intermediate pipe 9 and the outer pipe 10.

[0044] The steam passage 3 formed between the intermediate pipe 9 and the nozzle seat 7 connects steam passage 1 and steam passage 2, so that the steam can flow in the following order: one set of steam ports, steam passage 1, steam passage 2, and another set of steam ports, thereby realizing the steam protection of the liquid sulfur pipe 8.

[0045] In some possible implementations, a flange 15 is provided on the outer pipe 10; the air pipe 11 is connected to the flange 15 at one end near the flange 15.

[0046] Air vent 111 is located on the side of the air pipe 11 near the flange 15. There are two sets of air vents 111 arranged symmetrically and connected to the air passage formed between the air pipe 11 and the outer pipe 10.

[0047] When this device is installed in the sulfur incinerator, it is fixed to the sulfur incinerator by flange 15. The two sets of air inlets 111 are located inside the sulfur incinerator and introduce the low-temperature air from the main blower in the furnace head into the steam duct 4 to strengthen the low-temperature protection of the gun tube, thereby avoiding heat deformation and bending.

[0048] Furthermore, the two sets of steam inlets and liquid sulfur inlets are located outside the sulfur incinerator. An input pipe 81 is provided at the liquid sulfur inlet, and the input pipe 81 will also be protected by the steam circulation pipe assembly. The axis of the input pipe 81 will be perpendicular to the axis of the liquid sulfur pipe 8. The two sets of steam inlets are provided with steam pipes 101, and the two sets of steam pipes 101 will also be perpendicular to the axis of the liquid sulfur pipe 8.

[0049] In some possible implementations, a bracket 13 with an internally threaded hole is provided on the outside of the liquid sulfur pipe 8, and an external thread for cooperating with the internally threaded hole is provided on the connecting rod 121; the end of the connecting rod 121 away from the tapered structure 122 passes through the liquid sulfur pipe 8 and is connected to the drive assembly 14.

[0050] The drive assembly 14 is mainly used to control the connecting rod 121 to rotate around its axis. For example, a handwheel connected to the end of the connecting rod 121 away from the nozzle 1 can be used to manually control the connecting rod 121 to rotate around its axis, so that the injection needle 12 moves along its axis while rotating to change the sulfur output. Of course, electric, pneumatic or hydraulic methods can also be used to control the rotation and movement of the connecting rod 121.

[0051] This invention is not limited to the specific embodiments described above. This invention extends to any new feature or combination disclosed in this specification, as well as any new method or process step or combination disclosed herein.

Claims

1. An adjustable anti-bending liquid sulfur spray gun, characterized in that, It includes a barrel with an air vent, a nozzle installed at one end of the barrel and communicating with the barrel, a spray needle installed inside the barrel and coaxially arranged with the nozzle, and a drive assembly installed on the barrel for moving the spray needle along its axial direction. The nozzle includes a connecting rod that is connected to the drive assembly, and a tapered structure disposed at the end of the connecting rod away from the drive assembly, the large end of the tapered structure being connected to the connecting rod.

2. The adjustable anti-bending liquid sulfur spray gun according to claim 1, characterized in that, The barrel includes a rod for mounting a drive assembly, a nozzle connected to the end of the rod away from the drive assembly and coaxially fitted outside the nozzle needle, and a vortex head fitted inside the nozzle; the vortex head is coaxially connected to the nozzle; the end of the nozzle away from the drive assembly passes through the vortex head and is used in conjunction with the nozzle.

3. The adjustable anti-bending liquid sulfur spray gun according to claim 2, characterized in that, A spiral section is provided on the connecting rod along the axial direction to cooperate with the swirling head; a swirling groove is formed between the spiral section and the swirling head; one end of the swirling groove is connected to the gun barrel and the other end is connected to the nozzle.

4. The adjustable anti-bending liquid sulfur spray gun according to claim 3, characterized in that, The swirl head is provided with a through hole that works in conjunction with the spiral section and is fitted onto the outside of the spray needle; the ends of the swirl head and the spray head near the nozzle are coplanar; a sealing ring is provided at the end of the gun barrel near the nozzle.

5. An adjustable anti-bending liquid sulfur spray gun according to any one of claims 1-4, characterized in that, The conical structure is cone-shaped, with the outer diameter of its large end matching the outer diameter of the connecting rod; the nozzle is provided with a spray hole that works in conjunction with the conical structure and is coaxial; the outer diameter of the spray hole is larger than the outer diameter of the connecting rod but smaller than the outer diameter of the spiral section.

6. An adjustable anti-bending liquid sulfur spray gun according to claim 2, characterized in that, The rod includes a liquid sulfur pipe fitted outside the nozzle and having a liquid sulfur inlet, a steam circulation pipe assembly fitted outside the liquid sulfur pipe and having a steam outlet, and an air pipe fitted outside the steam circulation pipe assembly and having a vent. The drive assembly is located on the side of the liquid sulfur pipe away from the nozzle.

7. An adjustable anti-bending liquid sulfur spray gun according to claim 6, characterized in that, The steam circulation pipe assembly includes an intermediate pipe fitted outside the liquid sulfur pipe to form a steam passage one, an outer pipe fitted outside the intermediate pipe to form a steam passage two, and a nozzle seat fitted inside the outer pipe to close the ends of steam passage one and steam passage two near the nozzle; the nozzle seat is disposed between the liquid sulfur pipe and the nozzle and is connected to the liquid sulfur pipe and the nozzle respectively.

8. An adjustable anti-bending liquid sulfur spray gun according to claim 7, characterized in that, A third steam passage is formed between the intermediate pipe and the nozzle seat to connect steam passage one and steam passage two; steam ports are respectively provided on the intermediate pipe and the outer pipe.

9. An adjustable anti-bending liquid sulfur spray gun according to claim 7, characterized in that, A flange is provided on the outer pipe; the air pipe is connected to the flange at one end near the flange, and the air outlet is provided on the side of the air pipe near the flange. There are two sets of air outlets, which are symmetrically arranged and are connected to the air passage formed between the air pipe and the outer pipe. The two sets of air outlets are symmetrically arranged and connected to the air passage formed between the air pipe and the outer pipe.

10. An adjustable anti-bending liquid sulfur spray gun according to any one of claims 6-9, characterized in that, A bracket with an internal threaded hole is provided on the outside of the liquid sulfur pipe, and an external thread with an internal threaded hole is provided on the connecting rod; the end of the connecting rod away from the tapered structure passes through the liquid sulfur pipe and connects to the drive assembly.

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