Sulfur spray gun

Abstract

The utility model relates to a sulfur spray gun which comprises a connecting flange, a protective sleeve, an outer pipe, a steam jacket pipe, a liquid sulfur pipe, a gas inlet pipe, a gas outlet pipe, a mounting flange, an end socket and a spray head, the end part of the protective sleeve is welded on the mounting flange, the outer pipe is arranged on the mounting flange in a penetrating manner and is positioned in the protective sleeve, and an expansion joint is arranged on the outer pipe; the steam jacket pipe penetrates into the outer pipe and is welded to the outer pipe, the end of the steam jacket pipe is welded to the connecting flange, the liquid sulfur pipe penetrates into the steam jacket pipe, a first connecting part with the outer diameter matched with the inner diameter of the steam jacket pipe is formed at the end of the end socket, and the end socket is inserted into the outer pipe and is welded to the outer pipe. The first connecting part is inserted into the steam jacket pipe and welded to the steam jacket pipe, the end of the liquid sulfur pipe abuts against the connecting step and welded to the first connecting part, and the spray head is connected to the end socket. The sulfur spray gun can prevent the expansion and retraction of the outer pipe from driving the end socket to deviate, so that the welding tension crack of the end socket and the liquid sulfur pipe is avoided, and the stability of the sulfur spray gun during operation is ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of liquid sulfur acid-making equipment, in particular to a sulfur spray gun. Background Art

[0002] The sulfur spray gun is a device installed on the sulfur incinerator in the liquid sulfur acid-making equipment to provide atomized liquid sulfur for the sulfur incinerator. It is generally composed of a three-layer pipe structure consisting of a liquid sulfur pipe, a steam jacket pipe and an outer pipe, and a head is welded at the end of the liquid sulfur pipe and the outer pipe. The head seals the interlayer of the three-layer pipe fittings and is used to install the spray head. The existing head is generally a straight cylinder or a large and small head head. The outer peripheral side and the inner diameter side of the head are welded to the outer pipe and the liquid sulfur pipe respectively. When the outer pipe of the sulfur spray gun with this head structure expands due to parking, it is easy to cause the head and the liquid sulfur pipe to offset, resulting in the failure of the liquid sulfur pipe to crack.

[0003] In view of the above problems, the present invention makes improvements. Utility Model Content

[0004] The utility model provides a sulfur spray gun, which solves the above problems existing in the prior art during use.

[0005] The technical solution of the utility model is achieved in this way:

[0006] A sulfur spray gun comprises a connecting flange, a jacket pipe, an outer pipe, a steam jacket pipe, a liquid sulfur pipe, an air inlet pipe, an air outlet pipe, a mounting flange, a head and a nozzle, wherein the end of the jacket pipe is welded to the mounting flange, the outer pipe is passed through the mounting flange and located inside the jacket pipe, and an expansion joint is provided on the outer pipe, the steam jacket pipe is passed through the outer pipe and welded to the outer pipe, and the end of the steam jacket pipe is welded to the connecting flange, the liquid sulfur pipe is passed through the steam jacket pipe, a first connecting portion having an outer diameter matching an inner diameter of the steam jacket pipe is formed at the end of the head, the head is inserted into the outer pipe and welded to the outer pipe, the first connecting portion is inserted into the steam jacket pipe and welded to the steam jacket pipe, the end of the liquid sulfur pipe abuts against a connecting step and is welded to the first connecting portion, and the nozzle is connected to the head.

[0007] Preferably, a second connection portion matching the inner diameter of the sheath tube is formed on the peripheral side surface of the head, and the second connection portion is inserted into the sheath tube and welded to the sheath tube.

[0008] Preferably, a connection groove matching the second connection portion is formed on the end surface of the second connection portion facing the outer tube, and the end of the outer tube is inserted into the connection groove.

[0009] Preferably, a threaded hole is formed on the end surface of the seal head facing the nozzle, and a threaded ring portion matching the threaded hole is formed on the nozzle, and the threaded ring portion is threaded into the threaded hole so that the inner hole of the threaded ring portion is aligned and connected with the inner hole of the seal head.

[0010] Preferably, an annular groove is provided on the inner wall of the threaded hole, and a sealing ring is arranged in the annular groove. When the threaded ring portion is threaded into the threaded hole, the end of the threaded ring portion is tightly against the sealing ring.

[0011] Preferably, a truncated cone-shaped transition hole is formed in the inner hole of the sealing head away from the port of the nozzle, and the large end of the transition hole faces the liquid sulfur pipe and is aligned and connected with the liquid sulfur pipe.

[0012] Preferably, a plurality of reinforcing ribs extending along the length direction of the sheath tube and arranged in a circular pattern along the axis of the sheath tube are welded on the inner wall of the sheath tube, and the reinforcing ribs abut against the outer wall of the outer tube.

[0013] In summary, the beneficial effects of the utility model are as follows: the outer tube, the steam jacketed tube and the liquid sulfur tube are all welded to the same head, so that the outer tube, the steam jacketed tube and the liquid sulfur tube have a mutual restraining effect through the action of the head, and when the outer tube expands due to the impact of parking and expands and contracts on the mounting flange, the connection between the head and the jacketed tube, the steam jacketed tube and the liquid sulfur tube remains stable, thus preventing the expansion and contraction of the outer tube from driving the head to deviate and causing the welding between the head and the liquid sulfur tube to crack, thereby ensuring the stability of the sulfur spray gun during operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0015] Figure 1 It is a cross-sectional schematic diagram of the utility model;

[0016] Figure 2 for Figure 2 The enlarged schematic diagram of point A in the middle;

[0017] Figure 3 A cross-sectional schematic diagram of the utility model in another direction;

[0018] Figure 4 It is a structural schematic diagram of the head in the utility model.

[0019] In the figure: 1. connecting flange; 2. jacket pipe; 21. reinforcing rib; 3. outer pipe; 31. expansion joint; 4. steam jacket pipe; 5. liquid sulfur pipe; 6. air inlet pipe; 7. air outlet pipe; 8. mounting flange; 9. end cap; 91. first connecting part; 92. connecting step; 93. second connecting part; 94. connecting groove; 95. screw hole; 96. ring groove; 97. sealing ring; 98. transition hole; 10. nozzle; 101. screw ring. DETAILED DESCRIPTION

[0020] The following will be combined with the attached embodiment of the utility model Figure 1-4 , clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of them. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0021] As shown in the figure, a sulfur spray gun includes a connecting flange 1, a jacket pipe 2, an outer pipe 3, a steam jacket pipe 4, a liquid sulfur pipe 5, an air inlet pipe 6, an air outlet pipe 7, a mounting flange 8, a head 9 and a nozzle 10, wherein the end of the jacket pipe 2 is welded to the mounting flange 8, the outer pipe 3 is passed through the mounting flange 8 and is located inside the jacket pipe 2, and an expansion joint 31 is provided on the outer pipe 3, and the expansion joint 31 is provided on the portion of the outer pipe 3 passing through the mounting flange 8, the steam jacket pipe 4 is passed through the outer pipe 3 and welded to the outer pipe 3, and the end of the steam jacket pipe 4 is welded to the connecting flange 1, the liquid sulfur pipe 5 is passed through the steam jacket pipe 4, and the end of the liquid sulfur pipe 5 is welded to the connecting flange 1, and the liquid sulfur pipe 5 is passed through the steam jacket pipe 4. The end of the end cap 9 is formed with a first connecting portion 91 having an outer diameter matching the inner diameter of the steam jacket tube 4. The end cap 9 is inserted into the outer tube 3 and welded to the outer tube 3. The first connecting portion 91 is inserted into the steam jacket tube 4 and welded to the steam jacket tube 4. The end of the liquid sulfur tube 5 abuts against the connecting step 92 and is welded to the first connecting portion 91. The nozzle 10 is connected to the end cap 9.

[0022] Specifically, a second connection portion 93 matching the inner diameter of the sheath tube 2 is formed on the side surface of the sealing head 9 , and the second connection portion 93 is inserted into the sheath tube 2 and welded to the sheath tube 2 .

[0023] In the above structure, the mounting flange 8 is used to be fixedly mounted on the cavity wall of the sulfur incinerator to fix the sulfur spray gun, the welding of the end cap 9 and the outer tube 3 cooperates with the welding of the first connecting portion 91 and the steam jacket tube 4 to achieve the sealing of the interlayer between the outer tube 3 and the steam jacket tube 4, the welding of the first connecting portion 91 and the steam jacket tube 4 cooperates with the welding of the liquid sulfur tube 5 against the connecting step 92 and the first connecting portion 91 to achieve the sealing of the interlayer between the steam jacket tube 4 and the liquid sulfur tube 5, the welding of the second connecting portion 93 and the jacket tube 2 cooperates with the welding of the end cap 9 and the outer tube 3 to achieve the sealing of the jacket tube 2 and the outer tube 3. Moreover, since the jacket pipe 2, the outer pipe 3, the steam jacket pipe 4 and the liquid sulfur pipe 5 are all welded to the same sealing head 9, the jacket pipe 2, the outer pipe 3, the steam jacket pipe 4 and the liquid sulfur pipe 5 have a mutually restraining effect through the effect of the sealing head 9. When the outer pipe 3 expands due to the parking and expands and contracts on the mounting flange 8, the connection between the sealing head 9 and the jacket pipe 2, the steam jacket pipe 4 and the liquid sulfur pipe 5 remains stable, which prevents the expansion and contraction of the outer pipe 3 from driving the sealing head 9 to deviate and causing the welding between the sealing head 9 and the liquid sulfur pipe 5 to be torn, thereby ensuring the stability of the sulfur spray gun during operation.

[0024] In addition, a connecting groove 94 matching the second connecting portion 93 is provided on the end surface of the second connecting portion 93 facing the outer tube 3, and the end of the outer tube 3 is inserted into the connecting groove 94. The limiting effect of the connecting groove 94 on the end of the outer tube 3 strengthens the stability of the outer tube 3 and the head 9 after welding.

[0025] In addition, a threaded hole 95 is formed on the end surface of the head 9 facing the nozzle 10, and a threaded ring portion 101 matching the threaded hole 95 is formed on the nozzle 10. The threaded ring portion 101 is threaded into the threaded hole 95 so that the inner hole of the threaded ring portion 101 is aligned and connected with the inner hole of the head 9. The nozzle 10 is connected to the head 9 by threading the threaded ring portion 101 with the threaded hole 95, which is convenient for disassembly and assembly of the nozzle 10, thereby facilitating maintenance of the sulfur nozzle during use. Moreover, the inner hole of the head 9 is aligned and connected with the inner hole of the threaded ring portion 101, so that the liquid sulfur sent from the liquid sulfur pipe 5 to the nozzle 10 flows more smoothly, so as to ensure the atomization effect of the liquid sulfur.

[0026] In addition, an annular groove 96 is provided on the inner wall of the threaded hole 95, and a sealing ring 97 is provided in the annular groove 96. When the threaded ring portion 101 is threaded into the threaded hole 95, the end of the threaded ring portion 101 is tightly against the sealing ring 97. The sealing ring 97 strengthens the sealing performance of the threaded ring portion 101 after being connected to the head 9, and also strengthens the sealing performance of the nozzle 10 after being connected to the head 9. After removing the nozzle 10, the sealing ring 97 can be easily replaced to ensure its sealing performance.

[0027] In addition, a truncated cone-shaped transition hole 98 is formed at the inner hole of the sealing head 9 away from the port of the nozzle 10, and the large end of the transition hole 98 faces the liquid sulfur pipe 5 and is aligned and connected with the liquid sulfur pipe 5. The transition hole 98 plays a transitional role for the liquid sulfur in the process of being sent from the liquid sulfur pipe 5 to the nozzle 10, thereby reducing the resistance of the liquid sulfur in the flow process and ensuring that the flow of the liquid sulfur is smoother, so as to ensure the effect of liquid sulfur atomization.

[0028] In addition, a plurality of reinforcing ribs 21 extending along the length direction of the sheath tube 2 and arranged in a ring along the axis of the sheath tube 2 are welded on the inner wall of the sheath tube 2. The cross-section of the reinforcing ribs 21 is triangular. The large end of the reinforcing ribs 21 is welded to the inner wall of the sheath tube 2, and the small end is against the outer wall of the outer tube 3. The outer tube 3 is radially limited by the reinforcing ribs 21 to limit the radial deviation of the outer tube 3 when it expands and contracts, thereby ensuring that the outer tube 3 will not bend, thereby strengthening the overall rigidity of the sulfur spray gun, thereby ensuring the stability of the sulfur spray gun during operation.

[0029] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A sulfur spray gun, comprising a connecting flange (1), a jacket pipe (2), an outer pipe (3), a steam jacket pipe (4), a liquid sulfur pipe (5), an air inlet pipe (6), an air outlet pipe (7), a mounting flange (8), a sealing head (9) and a nozzle (10), wherein the end of the jacket pipe (2) is welded to the mounting flange (8), the outer pipe (3) is inserted through the mounting flange (8) and is located inside the jacket pipe (2), and an expansion joint (31) is provided on the outer pipe (3), the steam jacket pipe (4) is inserted through the outer pipe (3) and is welded to the outer pipe (3), and the end of the steam jacket pipe (4) is welded to the connecting flange (1), and the liquid sulfur pipe (5) is inserted through the steam jacket pipe (4), characterized in that: The end of the end cap (9) is formed with a first connection portion (91) whose outer diameter matches the inner diameter of the steam jacket tube (4); the end cap (9) is inserted into the outer tube (3) and welded to the outer tube (3); the first connection portion (91) is inserted into the steam jacket tube (4) and welded to the steam jacket tube (4); the end of the liquid sulfur tube (5) abuts against the connection step (92) and is welded to the first connection portion (91); and the nozzle (10) is connected to the end cap (9).

2. The sulfur spray gun according to claim 1, characterized in that: A second connection portion (93) matching the inner diameter of the sheath tube (2) is formed on the peripheral side surface of the sealing head (9), and the second connection portion (93) is inserted into the sheath tube (2) and welded to the sheath tube (2).

3. The sulfur spray gun according to claim 2, characterized in that: A connection groove (94) matching the second connection portion (93) is provided on the end surface of the second connection portion (93) facing the outer tube (3), and the end of the outer tube (3) is inserted into the connection groove (94).

4. The sulfur spray gun according to claim 1, characterized in that: A screw hole (95) is formed on the end surface of the sealing head (9) facing the nozzle (10), and a screw ring portion (101) matching the screw hole (95) is formed on the nozzle (10), and the screw ring portion (101) is screwed into the screw hole (95) so that the inner hole of the screw ring portion (101) is aligned and connected with the inner hole of the sealing head (9).

5. The sulfur spray gun according to claim 4, characterized in that: An annular groove (96) is provided on the inner wall of the threaded hole (95), and a sealing ring (97) is provided in the annular groove (96). When the threaded ring portion (101) is threaded into the threaded hole (95), the end of the threaded ring portion (101) is tightly against the sealing ring (97).

6. The sulfur spray gun according to claim 5, characterized in that: A truncated cone-shaped transition hole (98) is formed in the inner hole of the sealing head (9) away from the end of the nozzle (10), and the large end of the transition hole (98) faces the liquid sulfur pipe (5) and is aligned and connected with the liquid sulfur pipe (5).

7. The sulfur spray gun according to claim 1, characterized in that: A plurality of reinforcing ribs (21) extending along the length direction of the sheath tube (2) and arranged in an annular pattern along the axis of the sheath tube (2) are welded on the inner wall of the sheath tube (2), and the reinforcing ribs (21) abut against the outer wall of the outer tube (3).

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