Roasting furnace spray gun with cooling structure

Abstract

The utility model relates to the relevant technical field of roasting furnace spray guns, in particular to a roasting furnace spray gun with a cooling structure, which comprises a spray head protective shell, the upper end of the spray head protective shell is open, a spray head main body is arranged in the spray head protective shell, and a first connecting ring is arranged below the spray head main body. A second connecting ring is arranged below the first connecting ring, a filter screen is fixed to the middle of the second connecting ring, and a spray gun shell body is arranged below the second connecting ring. According to the improved roasting furnace spray gun, the cooling circulation pipe and the spray head protection shell are arranged, the cooling circulation pipe is installed, and cooling liquid is continuously injected into the cooling circulation pipe, so that the cooling liquid in the double-spiral pipe can reduce the waste acid solution in the spray gun shell main body and the spray head main body; the high temperature in the roasting furnace is prevented from causing the waste acid solution to react in the spray gun in advance, so that a large amount of iron oxide is accumulated in the spray gun to block the spray head and influence the working efficiency.

Description

Technical Field

[0001] This utility model relates to the technical field of roasting furnace spray guns, specifically a roasting furnace spray gun with a cooling structure. Background Technology

[0002] The calcination process in a roasting furnace is currently the most effective and feasible way to treat industrial waste acid. The waste acid is decomposed into hydrochloric acid and iron oxide after high-temperature treatment, and the hydrochloric acid can then be reused in industrial production.

[0003] To ensure the continuous supply of acid required in industrial production, waste acid needs to be continuously injected into the roasting furnace to decompose and produce hydrochloric acid for use in industrial processing. Therefore, an acid-resistant spray gun is needed to continuously spray the waste acid into the roasting furnace.

[0004] Existing patent (publication number: CN210321222U) discloses a roasting furnace spray gun, including a spray gun tube, a nozzle tray, and a filter element; the spray gun tube includes an upper connecting part, a lower connecting sleeve, and a spray gun tube; the upper connecting part includes a loose flange and a connecting flange; the lower connecting sleeve includes body A and body B, body A has an internal thread surface one and body B has an internal thread surface two, the internal thread surfaces one and two are concentric; the internal thread surface one connects to the spray gun tube wall; the nozzle tray includes an external thread surface and a spray surface, the external thread surface is fixed by cooperating with the internal thread surface two, the spray surface has a nozzle hole, the nozzle hole is used with a nozzle; the filter element includes a convex ring and a filter screen, the filter element is placed inside the spray gun tube, the convex ring includes a first-stage convex ring and a second-stage convex ring, the first-stage convex ring is fixed by the pressing method of the lower connecting sleeve and the nozzle tray, and the second-stage convex ring is interference-fitted with the spray gun tube wall; this utility model has the advantages of flexible replacement of parts, good sealing performance, simple structure, and high economic efficiency. In the process of realizing this utility model, the inventors discovered the following problems with the existing technology: 1. During the operation of traditional roasting furnace spray guns, they need to directly face the high temperature inside the roasting furnace, which causes the temperature of the waste acid solution inside the spray gun to rise, thereby causing the waste acid solution to decompose and react prematurely inside the spray gun; 2. Traditional roasting furnace spray guns are equipped with a filter structure inside to prevent impurities in the waste acid solution from clogging the nozzle. However, the iron oxide produced by decomposition under high temperature will clog the filter screen, thereby affecting the flow rate of the spray gun. Utility Model Content

[0005] The purpose of this utility model is to provide a roasting furnace spray gun with a cooling structure to solve the problems mentioned in the background art, such as high temperature causing premature decomposition of waste acid solution and impurities in waste acid clogging the filter screen. To achieve the above objective, this utility model provides the following technical solution: a roasting furnace spray gun with a cooling structure, including a nozzle protective shell, the upper end of which is open, and a nozzle body is disposed inside the nozzle protective shell. A first connecting ring is disposed below the nozzle body, and a second connecting ring is disposed below the first connecting ring. A filter screen is fixed in the middle of the second connecting ring, and a spray gun outer shell body is disposed below the second connecting ring. A third connecting ring is disposed at the bottom end of the spray gun outer shell body, and a flange connecting plate is disposed below the third connecting ring.

[0006] A sealing connection ring is provided at the bottom center of the flange connecting plate, and a fixing ring is provided on the outer ring of the sealing connection ring. A spray gun end interface is provided at the bottom of the sealing connection ring, and a thread is fixed on the outer ring surface of the spray gun end interface.

[0007] The spray gun housing has a grooved internal slot for a cooling flow pipe, and a spiral rod is provided inside the spray gun housing. The upper end of the spiral rod is provided with a first fixing rod, and the lower end of the spiral rod is provided with a second fixing rod.

[0008] More preferably, the nozzle protective shell has a hollow internal structure, and a cooling flow pipe is provided inside the nozzle protective shell. The cooling flow pipe has a double helix structure, and the nozzle protective shell is made of high-temperature resistant metal. The upper inner ring diameter of the nozzle protective shell is equal to the upper diameter of the nozzle body, and the bottom surface of the inner ring of the nozzle protective shell is threaded to the lower surface of the nozzle body. The bottom end of the nozzle body is sealed to the upper end of the first connecting ring, and both ends of the cooling flow pipe are sealed and fixed to the left and right sides of the bottom end of the nozzle body.

[0009] More preferably, the bottom of the inner ring of the first connecting ring is provided with an annular groove, and the inner wall of the groove is connected to the upper end of the second connecting ring by a threaded seal. The bottom end of the second connecting ring is sealed to the upper end of the spray gun housing body. The left and right sides of the first connecting ring are provided with through grooves. The upper end of the through groove is sealed to both ends of the cooling flow pipe inside the nozzle body, and the upper end of the cooling flow pipe inside the spray gun housing body is sealed to the through groove at the bottom of the first connecting ring.

[0010] More preferably, the outer ring of the first fixing rod is fixed with a connecting rod, and the other end of the connecting rod is fixed to the inner wall of the spray gun housing body. The upper end of the spiral rod is connected to the middle of the bottom end of the first fixing rod by a bearing. The outer ring of the spiral rod is fixed with spiral blades at equal intervals. The diameter of the spiral blades of the spiral rod is smaller than the diameter of the inner wall of the spray gun housing body. The outer ring of the second fixing rod is fixed with a connecting rod, and the other end of the connecting rod is fixed to the bottom of the inner wall of the spray gun housing body. The bottom end of the spiral rod is connected to the middle of the upper end of the second fixing rod by a bearing.

[0011] More preferably, the bottom end of the third connecting ring is sealed to the upper surface of the sealing connecting ring, and the inner diameter of the flange connecting plate is equal to the outer diameter of the sealing connecting ring. The outer ring of the sealing connecting ring is fitted with the fixing ring, which consists of two arc-shaped locking strips. A rotating shaft is installed at the right end of the fixing ring, and the front fixing ring is rotatably connected to the rear fixing ring through the rotating shaft. The left end of the fixing ring is connected by a screw.

[0012] More preferably, the upper end of the spray gun end interface is fixed to the bottom surface of the sealing connection ring, and sealing grooves are provided on both the left and right sides of the sealing connection ring. The upper end of the sealing groove is sealed to the bottom end of the cooling flow pipe inside the spray gun housing body. The material of the roasting furnace spray gun is 304 stainless steel.

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

[0014] In this invention, a cooling circulation pipe and a nozzle protective shell are provided. By installing the cooling circulation pipe, coolant is continuously added to the inside of the cooling circulation pipe, so that the coolant in the double spiral pipe can reduce the waste acid solution inside the spray gun shell and the nozzle body, so as to avoid the high temperature in the roasting furnace causing the waste acid solution to react prematurely inside the spray gun, which would cause a large amount of iron oxide to accumulate inside the spray gun and block the nozzle, thereby affecting the working efficiency.

[0015] In this invention, a spiral rod and a second connecting ring are provided. The spiral rod is driven to rotate by the power of the water flow through the continuously flowing waste acid solution, thereby continuously agitating the waste acid inside the spray gun housing. This prevents a large amount of impurities from accumulating on the bottom surface of the second connecting ring along with the water flow, thus avoiding the impurities from clogging the filter screen and affecting the flow rate of the waste liquid inside the spray gun. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0017] Figure 2 This is a schematic diagram of the overall unfolded structure of this utility model;

[0018] Figure 3 This is an enlarged schematic diagram of the spray gun end interface of this utility model;

[0019] Figure 4 This is an enlarged schematic diagram of the cooling flow tube of this utility model;

[0020] Figure 5 This is a schematic diagram of the front section structure of the main body of the spray gun shell of this utility model.

[0021] In the diagram: 1. Nozzle protective shell; 2. Nozzle body; 3. First connecting ring; 4. Second connecting ring; 5. Spray gun housing body; 6. Third connecting ring; 7. Flange connecting plate; 8. Spray gun end interface; 9. Fixing ring; 10. First fixing rod; 11. Spiral rod; 12. Second fixing rod; 13. Sealing connecting ring; 14. Cooling flow pipe. Detailed Implementation

[0022] 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 skilled in the art without creative effort are within the protection scope of the present utility model.

[0023] Please see Figures 1 to 5 This utility model provides a technical solution: a roasting furnace spray gun with a cooling structure, including a nozzle protective shell 1, the upper end of the nozzle protective shell 1 is open, and a nozzle body 2 is provided inside the nozzle protective shell 1. A first connecting ring 3 is provided below the nozzle body 2, and a second connecting ring 4 is provided below the first connecting ring 3. A filter screen is fixed in the middle of the second connecting ring 4, and a spray gun housing body 5 is provided below the second connecting ring 4. A third connecting ring 6 is provided at the bottom end of the spray gun housing body 5, and a flange connecting plate 7 is provided below the third connecting ring 6.

[0024] A sealing connection ring 13 is provided at the bottom center of the flange connection plate 7, and a fixing ring 9 is provided on the outer ring of the sealing connection ring 13. A spray gun end interface 8 is provided at the bottom of the sealing connection ring 13, and the outer ring surface of the spray gun end interface 8 is fixed with threads.

[0025] The spray gun housing body 5 has a grooved internal slot for a cooling flow pipe 14, and a spiral rod 11 is provided inside the spray gun housing body 5. The upper end of the spiral rod 11 is provided with a first fixing rod 10, and the lower end of the spiral rod 11 is provided with a second fixing rod 12.

[0026] In this embodiment, as Figure 1 and Figure 2As shown, the nozzle protective shell 1 has a hollow internal structure, and a cooling flow pipe 14 is installed inside the nozzle protective shell 1. The cooling flow pipe 14 has a double spiral structure, and the nozzle protective shell 1 is made of high-temperature resistant metal. The upper inner ring diameter of the nozzle protective shell 1 is equal to the upper diameter of the nozzle body 2, and the bottom surface of the inner ring of the nozzle protective shell 1 is threaded to the lower surface of the nozzle body 2. The bottom end of the nozzle body 2 is sealed to the upper end of the first connecting ring 3, and both ends of the cooling flow pipe 14 are sealed and fixed to the left and right sides of the bottom end of the nozzle body 2. The nozzle protective shell 1 can directly prevent the nozzle body 2 from directly contacting the high temperature heat wave inside the roasting furnace, and the temperature inside the nozzle body 2 can be reduced by the cooling flow pipe 14.

[0027] In this embodiment, as Figure 1 , Figure 2 and Figure 4 As shown, the bottom of the inner ring of the first connecting ring 3 is provided with an annular groove, and the inner wall of the groove is connected to the upper end of the second connecting ring 4 by a threaded seal. The bottom end of the second connecting ring 4 is sealed to the upper end of the spray gun housing body 5. The left and right sides of the first connecting ring 3 are provided with through grooves. The upper end of the through groove is sealed to both ends of the cooling flow pipe 14 inside the nozzle body 2, and the upper end of the cooling flow pipe 14 inside the spray gun housing body 5 is sealed to the through groove at the bottom of the first connecting ring 3. Through the double spiral structure of the cooling flow pipe 14, the temperature inside the spray gun housing body 5 is sufficiently reduced to prevent the waste acid solution from being reacted at high temperature.

[0028] In this embodiment, as Figure 1 and Figure 2 As shown, a connecting rod is fixed to the outer ring of the first fixing rod 10, and the other end of the connecting rod is fixed to the inner wall of the spray gun housing body 5. The upper end of the spiral rod 11 is connected to the middle of the bottom end of the first fixing rod 10 by a bearing, and spiral blades are fixed at equal intervals on the outer ring of the spiral rod 11. The diameter of the spiral blades of the spiral rod 11 is smaller than the diameter of the inner wall of the spray gun housing body 5. A connecting rod is fixed to the outer ring of the second fixing rod 12, and the other end of the connecting rod is fixed to the bottom of the inner wall of the spray gun housing body 5. The bottom end of the spiral rod 11 is connected to the middle of the upper end of the second fixing rod 12 by a bearing. By connecting the upper and lower ends of the spiral rod 11 between the first fixing rod 10 and the second fixing rod 12 by bearings, the spiral rod 11 will be rotated by the power of the water flow, thereby stirring the waste acid solution.

[0029] In this embodiment, as Figure 1 , Figure 2 and Figure 3As shown, the bottom end of the third connecting ring 6 is sealed to the upper surface of the sealing connecting ring 13, and the inner diameter of the flange connecting plate 7 is equal to the outer diameter of the sealing connecting ring 13. The outer ring of the sealing connecting ring 13 is fitted with a fixing ring 9, which consists of two arc-shaped locking strips. A rotating shaft is installed at the right end of the fixing ring 9. The front fixing ring 9 is rotatably connected to the rear fixing ring 9 through the rotating shaft, and the left end of the fixing ring 9 is connected by screws. The sealing connecting ring 13 and the flange connecting plate 7 are fixed together by the fixing ring 9, and the spray gun can be fixed to the surface of the roasting furnace through the flange connecting plate 7.

[0030] In this embodiment, as Figure 2 and Figure 4 As shown, the upper end of the spray gun end interface 8 is fixed to the bottom surface of the sealing connecting ring 13, and sealing grooves are provided on both the left and right sides of the sealing connecting ring 13. The upper end of the sealing groove is sealed to the bottom end of the cooling flow pipe 14 inside the spray gun housing body 5. The material of the roasting furnace spray gun is 304 stainless steel. By sealing and connecting the channels between the connecting structures, it is ensured that the coolant can flow through the bottom end of the sealing connecting ring 13 into the interior of the cooling flow pipe 14.

[0031] The usage and advantages of this utility model: The working process of this roasting furnace spray gun with a cooling structure is as follows:

[0032] like Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5 As shown, the user first needs to place the nozzle protective shell 1 into the roasting furnace slot, then press against the end interface 8 of the spray gun and insert the flange connecting plate 7 into the upper end of the end interface 8 of the spray gun, so that the upper surface of the flange connecting plate 7 can fit against the surface of the roasting furnace. Then, fix the flange connecting plate 7 to the surface of the roasting furnace with screws. Next, put the fixing ring 9 into the middle of the upper sealing connecting ring 13 of the end interface 8 of the spray gun, and turn the screw on the left end of the fixing ring 9 so that the fixing rings on the front and rear sides of the fixing ring 9 tighten the sealing connecting ring 13 and the flange connecting plate 7. Then, connect the pipe connected to the waste acid solution to the bottom end of the end interface 8 of the spray gun and ensure a seal.

[0033] The user needs to seal the pipe through which the coolant flows into the groove at the bottom of the sealing ring 13, so that the coolant flows through the groove into the cooling flow pipe 14. Then, the valve of the waste acid solution is opened, so that the waste acid solution flows into the interior of the spray gun housing 5 through the spray gun end interface 8. Then, the spiral rod 11, which is connected between the first fixed rod 10 and the second fixed rod 12, is driven to rotate by the power of the water flow, thereby agitating the waste acid inside the spray gun housing 5. The waste acid continues to flow forward and passes through the filter of the second connecting ring 4. The impurities in the waste acid are blocked at the bottom of the filter screen in the middle of the second connecting ring 4. The agitation of the spiral rod 11 prevents a large amount of impurities from accumulating at the bottom of the second connecting ring 4. After passing through the second connecting ring 4, the waste acid flows into the interior of the nozzle body 2 and is sprayed out from the end of the nozzle body 2.

[0034] After use, the user can remove the spray gun and rotate the first connecting ring 3 and the third connecting ring 6 to remove the main body 5 of the spray gun housing, making it easier for the user to clean and remove impurities.

[0035] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely preferred examples and are not intended to limit the utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A roasting furnace spray gun with a cooling structure, including a nozzle protective shell (1), characterized in that: The upper end of the nozzle protective shell (1) is open, and the nozzle body (2) is provided inside the nozzle protective shell (1). A first connecting ring (3) is provided below the nozzle body (2), and a second connecting ring (4) is provided below the first connecting ring (3). A filter screen is fixed in the middle of the second connecting ring (4), and a spray gun housing body (5) is provided below the second connecting ring (4). A third connecting ring (6) is provided at the bottom end of the spray gun housing body (5), and a flange connecting plate (7) is provided below the third connecting ring (6). A sealing connection ring (13) is provided at the bottom center of the flange connection plate (7), and a fixing ring (9) is provided on the outer ring of the sealing connection ring (13). A spray gun end interface (8) is provided at the bottom end of the sealing connection ring (13), and a thread is fixed on the outer ring surface of the spray gun end interface (8). The spray gun housing body (5) has a grooved cooling flow pipe (14) inside, and a spiral rod (11) is provided inside the spray gun housing body (5). The upper end of the spiral rod (11) is provided with a first fixing rod (10), and the bottom end of the spiral rod (11) is provided with a second fixing rod (12).

2. The roasting furnace spray gun with a cooling structure according to claim 1, characterized in that: The nozzle protective shell (1) has a hollow structure inside, and a cooling flow pipe (14) is provided inside the nozzle protective shell (1). The cooling flow pipe (14) has a double helix structure, and the nozzle protective shell (1) is made of high temperature resistant metal. The upper inner circle diameter of the nozzle protective shell (1) is equal to the upper diameter of the nozzle body (2). The bottom surface of the inner circle of the nozzle protective shell (1) is connected to the lower surface of the nozzle body (2) by a thread. The bottom end of the nozzle body (2) is sealed and connected to the upper end of the first connecting ring (3). Both ends of the cooling flow pipe (14) are sealed and fixed to the left and right sides of the bottom end of the nozzle body (2).

3. The roasting furnace spray gun with a cooling structure according to claim 1, characterized in that: The inner bottom of the first connecting ring (3) is provided with an annular groove, and the inner wall of the groove is connected to the upper end of the second connecting ring (4) by a thread seal. The bottom end of the second connecting ring (4) is sealed to the upper end of the spray gun housing body (5). The left and right sides of the first connecting ring (3) are provided with through grooves. The upper end of the through groove is sealed to both ends of the cooling flow pipe (14) inside the nozzle body (2). The upper end of the cooling flow pipe (14) inside the spray gun housing body (5) is sealed to the through groove at the bottom of the first connecting ring (3).

4. The roasting furnace spray gun with a cooling structure according to claim 1, characterized in that: The outer ring of the first fixing rod (10) is fixed with a connecting rod, and the other end of the connecting rod is fixed to the inner wall of the spray gun housing body (5). The upper end of the spiral rod (11) is connected to the middle of the bottom end of the first fixing rod (10). The outer ring of the spiral rod (11) is fixed with spiral blades at equal intervals. The diameter of the spiral blades of the spiral rod (11) is smaller than the inner wall diameter of the spray gun housing body (5). The outer ring of the second fixing rod (12) is fixed with a connecting rod, and the other end of the connecting rod is fixed to the bottom of the inner wall of the spray gun housing body (5). The bottom end of the spiral rod (11) is connected to the middle of the upper end of the second fixing rod (12).

5. The roasting furnace spray gun with a cooling structure according to claim 1, characterized in that: The bottom end of the third connecting ring (6) is sealed to the upper surface of the sealing connecting ring (13), and the inner diameter of the flange connecting plate (7) is equal to the outer diameter of the sealing connecting ring (13). The outer ring of the sealing connecting ring (13) is fitted with the fixing ring (9). The fixing ring (9) consists of two arc-shaped locking strips. A rotating shaft is installed on the right end of the fixing ring (9). The front fixing ring (9) is rotatably connected to the rear fixing ring (9) through the rotating shaft. The left end of the fixing ring (9) is connected by screws.

6. The roasting furnace spray gun with a cooling structure according to claim 1, characterized in that: The upper end of the spray gun end interface (8) is fixed to the bottom surface of the sealing connection ring (13), and sealing grooves are provided on both the left and right sides of the sealing connection ring (13). The upper end of the sealing groove is sealed to the bottom end of the cooling flow pipe (14) inside the spray gun housing body (5). The material of the roasting furnace spray gun is 304 stainless steel.

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