Spray gun and RH dip pipe spraying device

Abstract

The utility model discloses a spray gun and an RH dip pipe spraying device, and solves the technical problems of dust flying and material wasting in the RH dip pipe repairing process in the prior art. The spray gun comprises a spray head, a main spray pipe and an auxiliary pipe, and the main spray pipe is connected with the spray head and provided with a spray channel allowing solid powder to pass through; the auxiliary pipe is provided with a circulation channel for liquid to pass through; the auxiliary pipe comprises an extending section and an acting section which are connected with each other; the extending-in section extends into the main spraying pipe from the side portion of the main spraying pipe, the acting section is located in the spraying channel and close to a spraying head of the main spraying pipe, and the acting section is provided with a liquid passing hole communicated with the spraying channel and the circulation channel. According to the spray gun, solid powder and liquid are mixed in the main spray pipe, dust flying is reduced, material waste and operation environment pollution are reduced, solid and liquid are mixed at the position close to the spray head, the maintenance efficiency of the RH dip pipe is improved, and the service life of the spray gun is prolonged.

Description

Technical Field

[0001] The present application belongs to the technical field of maintenance devices, and in particular relates to a spray gun and an RH dip tube spraying device. Background Art

[0002] In the industrial production process, maintenance devices are often used for daily maintenance of equipment due to cost and functional considerations. For example, a solid-liquid mixture of refractory materials and water is sprayed to a target location to achieve the effect of maintaining the device shell.

[0003] The outer surface of the RH impregnated tube will be corroded during vacuum smelting, and it is necessary to spray refractory materials on the surface of the RH impregnated tube for repair. In the prior art, a nozzle for spraying refractory materials and a nozzle for spraying water are respectively provided, and the two nozzles are simultaneously applied to the repaired position of the RH impregnated tube. During the spraying process, a large amount of dust is easily generated, which wastes materials and pollutes the operating environment of the staff. Summary of the invention

[0004] In order to solve the technical problems of dust flying, material waste and environmental pollution in the current RH immersion pipe repair process, the present application provides a spray gun.

[0005] In a first aspect of the present application, a spray gun is provided, comprising a spray head, a main nozzle, and an auxiliary nozzle.

[0006] The main nozzle is provided with a spray channel for solid powder to pass through, and is connected to the nozzle;

[0007] The auxiliary pipe is provided with a circulation channel for liquid to pass through; the auxiliary pipe includes an extending section and an action section connected to each other; the extending section extends into the main nozzle from the side of the main nozzle, the action section is located in the injection channel and close to the nozzle of the main nozzle, and the action section is provided with a liquid hole connecting the injection channel and the circulation channel;

[0008] In an optional embodiment of the present application, there are multiple auxiliary pipes, and the multiple auxiliary pipes are arranged at intervals.

[0009] In an optional embodiment of the present application, a plurality of the liquid-passing holes form a group, and the liquid-passing holes are provided in a plurality of groups, and the plurality of groups of liquid-passing holes are spaced apart along the axial direction of the action section; a plurality of liquid-passing holes in each group of the liquid-passing holes are spaced apart along the circumferential direction of the action section; or, the liquid-passing holes are waist-shaped holes, and the length direction of the waist-shaped holes is parallel to the axial direction of the action section;

[0010] In an optional embodiment of the present application, the axial direction of the action section is arranged parallel to the axial direction of the main nozzle;

[0011] In an optional embodiment of the present application, the axial direction of the liquid-passing hole is arranged at an angle with the main nozzle, and the liquid-passing hole is provided with a first end close to the injection channel, and the first end is close to the nozzle of the main nozzle;

[0012] In an optional embodiment of the present application, the angle between the axial direction of the liquid passage hole and the main nozzle is 115° to 135°;

[0013] In an optional embodiment of the present application, the axial direction of the action section is perpendicular to the axial direction of the main nozzle; the liquid passage hole is provided on a side of the action section facing the nozzle of the main nozzle;

[0014] In an optional embodiment of the present application, the extending section is arranged at an angle to the main nozzle, and the connection between the extending section and the action section is close to the nozzle of the main nozzle;

[0015] In an optional embodiment of the present application, the main nozzle includes a mixing section and a supply section that are connected to each other, the nozzle is connected to one end of the mixing section away from the supply section, the action section is located in the injection channel of the mixing section, and the spray gun includes a first flow regulating valve for controlling the solid powder flow of the supply section; the spray gun also includes a second flow regulating valve for controlling the liquid flow of the extension section.

[0016] In a second aspect of the present application, there is provided a RH dip tube spraying device, comprising a liquid storage tank, a solid powder tank and the spray gun;

[0017] The liquid storage tank is connected to the extension section of the spray gun;

[0018] The solid powder tank is communicated with an end of the main nozzle away from the nozzle.

[0019] According to the spray gun provided in the embodiment of the present application, it includes a main nozzle and a sub-tube; the main nozzle is provided with an injection channel for solid powder to pass through; the sub-tube is provided with a circulation channel for liquid to pass through; the sub-tube includes an extension section and an action section connected to each other; the extension section extends into the main nozzle from the side of the main nozzle, the action section is located in the injection channel and close to the nozzle of the main nozzle, the action section is provided with a liquid hole connecting the injection channel and the circulation channel, the solid powder and liquid are mixed inside the main nozzle, and the mixing uniformity is improved.

[0020] Compared with the prior art, the solid powder and liquid of the present application are mixed in the main nozzle with high mixing uniformity. Most of the solid powder forms a solid-liquid mixture, which can reduce dust flying when exiting the nozzle, reduce material waste and pollution of the operating environment. The uniform mixing of solid powder and liquid makes the solid-liquid mixture have good use effect and high operating efficiency. The action section arranged in the present application is close to the nozzle, and solid-liquid mixing is carried out on the side close to the nozzle. The mixed solid-liquid mixture is directly sprayed out from the nozzle, avoiding the problem of solid-liquid mixture sticking to the pipe wall and agglomerating in the process of being transported to the nozzle by a long pipeline, thereby causing blockage of the nozzle body. The spray gun of the present application improves the maintenance efficiency of the RH immersion tube and extends the service life of the spray gun. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 A schematic structural diagram of a spray gun in an embodiment of the present application is shown.

[0022] Explanation of the accompanying reference numerals: 1. main nozzle; 2. active section; 3. extending section; 4. liquid hole; 5. nozzle. DETAILED DESCRIPTION

[0023] In order to make the technical personnel in the technical field to which the present application belongs to understand the present application more clearly, the technical scheme in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in the field without creative work are within the scope of protection of the present application.

[0024] In a first aspect embodiment of the present application, a spray gun is provided to improve the mixing effect of solid powder and liquid.

[0025] See also Figure 1 The spray gun provided in the embodiment of the present application includes a nozzle, a main nozzle 1, and an auxiliary nozzle; the main nozzle 1 is provided with an injection channel for solid powder to pass through, and is connected to the nozzle; the auxiliary nozzle is provided with a circulation channel for liquid to pass through; the auxiliary nozzle includes an insertion section 3 and an action section 2 connected to each other; the insertion section 3 is inserted into the main nozzle 1 from the side of the main nozzle 1, the action section 2 is located in the injection channel, and is close to the nozzle 5 of the main nozzle 1, and the action section 2 is provided with a liquid hole 4 connecting the injection channel and the circulation channel;

[0026] The main nozzle 1 is used for spraying mixed solid powder and liquid. The main nozzle 1 is filled with solid powder and moves along the injection channel of the main nozzle 1. The auxiliary pipe is filled with liquid and moves along the flow channel of the auxiliary pipe. The insertion end of the auxiliary pipe is inserted into the main nozzle 1. The action section 2 of the auxiliary pipe is located in the injection channel, close to the nozzle 5 of the main nozzle 1, and a liquid hole 4 is provided on the action section 2. The liquid is introduced from the auxiliary pipe and enters the injection channel of the main nozzle 1 through the liquid hole 4, and is mixed with the solid powder in the injection channel of the main nozzle 1, thereby improving the mixing uniformity of the solid powder and the liquid. The solid powder and the liquid are mixed near the nozzle 5, thereby solving the problem of pipe blockage caused by the solid-liquid mixture being transported to the nozzle 5, thereby increasing the maintenance efficiency and the service life of the device.

[0027] In some embodiments, multiple auxiliary pipes are provided, and the multiple auxiliary pipes are spaced apart to improve mixing efficiency; in some embodiments, the multiple auxiliary pipes are spaced apart along the axial direction of the main nozzle 1; in some embodiments, the multiple auxiliary pipes are spaced apart along the radial direction of the main nozzle 1.

[0028] In some embodiments, a plurality of liquid passage holes 4 form a group, and a plurality of groups of liquid passage holes 4 are provided, and the plurality of groups of liquid passage holes 4 are spaced apart along the axial direction of the action section 2; a plurality of liquid passage holes 4 in each group of liquid passage holes 4 are spaced apart along the circumferential direction of the action section 2 to further enhance the uniform mixing of the liquid and the solid powder; in some embodiments, the liquid passage holes 4 are waist-shaped holes, and the length direction of the waist-shaped holes is parallel to the axial direction of the action section 2; in some embodiments, a plurality of liquid passage holes 4 are opened on the wall of the action tube to connect the interior of the action tube with the external space.

[0029] In some embodiments, the axial direction of the action section 2 is arranged parallel to the axial direction of the main nozzle 1 to reduce the resistance exerted by the setting of the action section 2 on the movement of solid powder. In some embodiments, the extension direction of the action section 2 is arranged parallel to the extension direction of the main nozzle 1.

[0030] In some embodiments, the axial direction of the liquid hole 4 is set at an angle to the main nozzle 1, and the liquid hole 4 is provided with a first end close to the injection channel, and the first end is close to the nozzle 5 of the main nozzle 1 to enhance the mixing effect of the solid powder and the liquid; in some embodiments, the opening direction of the liquid hole 4 is set at an angle to the main nozzle 1; in some embodiments, the liquid hole 4 is set close to the nozzle 5 of the main nozzle 1.

[0031] In some embodiments, the axial angle between the liquid hole 4 and the main nozzle 1 is 115° to 135° to further enhance the mixing effect of the solid powder and the liquid; in some embodiments, the axial angle between the liquid hole 4 and the main nozzle 1 is 120°, 125° or 130°.

[0032] In some embodiments, the axial direction of the active section 2 is perpendicular to the axial direction of the main nozzle 1; a liquid hole 4 is provided on the side of the active section 2 facing the nozzle 5 of the main nozzle 1 to enhance the mixing effect of the solid powder and the liquid without affecting the spraying effect of the spray gun; in some embodiments, the extension direction of the active section 2 is perpendicular to the extension direction of the main nozzle 1; in some embodiments, a liquid hole 4 is provided on the side of the active section 2 close to the nozzle 5 of the main nozzle 1.

[0033] In some embodiments, the extension section 3 is set at an angle to the main nozzle 1, and the connection between the extension section 3 and the action section 2 is close to the nozzle 5 of the main nozzle 1, so as to reduce the impact of the solid powder on the extension section 3 during the injection process and increase the service life of the device; in some embodiments, the extension section 3 is set at 10°, 20° or 30° to the main nozzle 1; in some embodiments, the extension section 3 is connected to the action section 2, and the connection point is close to the nozzle 5 of the main nozzle 1.

[0034] In some embodiments, the main nozzle 1 includes a mixing section and a supply section that are connected to each other, the nozzle 5 is connected to one end of the mixing section away from the supply section, the action section 2 is located in the injection channel of the mixing section, and the spray gun includes a first flow regulating valve for controlling the solid powder flow rate of the supply section; the spray gun also includes a second flow regulating valve for controlling the liquid flow rate of the extension section 3, so as to facilitate adjusting the flow rate of the solid powder and the liquid, and to facilitate controlling the mixing ratio of the solid powder and the liquid; in some embodiments, the main nozzle 1 includes a nozzle 5 located at the top, and a first flow regulating valve for controlling the solid powder flow rate is provided on the nozzle away from the nozzle 5; in some embodiments, a second flow regulating valve for controlling the liquid flow rate of the extension section 3 is provided on the pipe body of the auxiliary pipe away from the action pipe.

[0035] In some embodiments, the nozzle 5 of the main nozzle 1 is provided with a trumpet-shaped baffle surrounding the nozzle 5; in some embodiments, the nozzle 5 of the main nozzle 1 is provided with a trumpet-shaped baffle whose bottom is sleeved on the outer ring of the nozzle 5 and whose top is higher than the highest position of the top of the nozzle 5, so as to reduce the impact of splashing of the solid-liquid mixture on the operator.

[0036] In the second aspect embodiment of the present application, a RH immersion tube spraying device is provided, which has the effect of spraying uniformly mixed solid powder and liquid, including a liquid storage tank, a solid powder tank and a spray gun; the liquid storage tank is connected to the extension section 3 of the spray gun; the solid powder tank is connected to the end of the main nozzle 1 away from the nozzle 5 to provide mixed raw materials; in some embodiments, the liquid storage tank is connected to the extension section 3 of the spray gun through a pump; in some embodiments, the solid powder tank is connected to the end of the main nozzle 1 away from the nozzle 5 through a pump.

[0037] The liquid provided by the liquid storage tank is sprayed out from the liquid hole 4 of the auxiliary pipe, and is mixed with the solid powder provided by the solid powder tank in the main nozzle 1 to form a solid-liquid mixture. The mixing is performed inside the main nozzle 1 near the nozzle 5, and the solid-liquid mixture is directly sprayed to the target position to reduce blockage inside the pipe body and increase material utilization.

[0038] The process of spraying by the spray gun of this application is described in detail below:

[0039] When the spray gun provided in the embodiment of the present application is in use, it is provided with a main nozzle 1 and a sub-tube, and the active section 2 of the sub-tube is located in the injection channel of the main nozzle 1, close to the nozzle 5. The solid powder tank connected to the main nozzle 1 provides solid powder for the main nozzle 1, and the solid powder flow is monitored by a first flow regulating valve. The liquid storage tank connected to the sub-tube provides liquid for the sub-tube, and the liquid flow is monitored by a second flow regulating valve. The liquid is passed into the injection channel through the liquid hole 4 on the active section 2 to achieve mixing of the liquid and the solid powder, so that the uniformly mixed solid-liquid mixture is sprayed to the target position by the nozzle 5.

[0040] The spray gun and RH dip tube spraying device of the present application have at least the following advantages:

[0041] (1) The solid powder and liquid of the present application are mixed in the main nozzle with high mixing uniformity. Most of the solid powder forms a solid-liquid mixture, which can reduce dust flying when it exits the nozzle, reduce material waste and pollution of the operating environment. The uniform mixing of the solid powder and the liquid makes the solid-liquid mixture have a good use effect and high operating efficiency.

[0042] (2) The action section of the present application is arranged close to the nozzle, and solid-liquid mixing is performed on the side close to the nozzle. The mixed solid-liquid mixture is directly sprayed out from the nozzle, thereby avoiding the problem of the solid-liquid mixture sticking to the pipe wall and causing blockage of the nozzle body during the process of being transported from the long pipeline to the nozzle. The spray gun of the present application improves the maintenance efficiency of the RH immersion tube and extends the service life of the spray gun.

[0043] (3) Multiple groups of liquid holes are arranged on the action tube to further improve the mixing uniformity of the solid-liquid mixture.

[0044] (4) The angle setting of the liquid hole and the main nozzle further improves the mixing uniformity of the solid-liquid mixture.

[0045] (5) Flow regulating valves are respectively provided on the main nozzle and the auxiliary nozzle to facilitate adjusting the flow of solid powder and liquid, and to facilitate controlling the mixing ratio of solid powder and liquid. The solid-liquid mixture obtained by mixing has a good use effect.

[0046] (6) A trumpet-shaped baffle is installed around the nozzle to prevent liquid splashing, which is practical.

[0047] In the present application, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0048] In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise" and "counterclockwise" indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0049] In this application, unless otherwise clearly specified and limited, the terms "connection", "fixation", etc. should be understood in a broad sense. For example, "fixation" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0050] In addition, the descriptions of "first", "second", etc. in this application are only for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" or "second" may explicitly or implicitly include one or more features. In the description of this application, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0051] Although the embodiments of the present application have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present application, and that the scope of the present application is defined by the claims and their equivalents.

Claims

1. A spray gun for spraying a solid-liquid mixture, characterized in that: include: Sprinklers; A main nozzle, provided with a spray channel for solid powder to pass through, and connected to the nozzle; The auxiliary pipe is provided with a circulation channel for liquid to pass through; the auxiliary pipe includes an extension section and an action section connected to each other; the extension section extends into the main nozzle from the side of the main nozzle, the action section is located in the injection channel and close to the nozzle, and the action section is provided with a liquid hole connecting the injection channel and the circulation channel.

2. The spray gun according to claim 1, characterized in that There are a plurality of auxiliary pipes, and the plurality of auxiliary pipes are arranged at intervals.

3. The spray gun according to claim 1, characterized in that A plurality of the liquid-passing holes form a group, and a plurality of the liquid-passing holes are provided, and the plurality of groups of the liquid-passing holes are distributed at intervals along the axial direction of the action section; a plurality of the liquid-passing holes in each group of the liquid-passing holes are distributed at intervals along the circumferential direction of the action section; or, the liquid-passing holes are waist-shaped holes, and the length direction of the waist-shaped holes is parallel to the axial direction of the action section.

4. The spray gun according to any one of claims 1 to 3, characterized in that: The axial direction of the action section is arranged parallel to the axial direction of the main nozzle.

5. The spray gun according to claim 4, characterized in that The axial direction of the liquid passage hole is arranged at an angle with the main nozzle, and the liquid passage hole is provided with a first end close to the injection channel, and the first end is close to the nozzle of the main nozzle.

6. The spray gun according to claim 5, characterized in that The angle between the axial direction of the liquid passage hole and the main nozzle is 115° to 135°.

7. The spray gun according to any one of claims 1 to 3, characterized in that: The axial direction of the action section is perpendicular to the axial direction of the main nozzle; the liquid passage hole is provided on one side of the action section facing the nozzle of the main nozzle.

8. The spray gun according to any one of claims 1 to 3, characterized in that: The extending section is arranged at an angle with the main nozzle, and the connection between the extending section and the action section is close to the nozzle of the main nozzle.

9. The spray gun according to any one of claims 1 to 3, characterized in that: The main nozzle includes a mixing section and a supply section that are connected to each other. The nozzle is connected to one end of the mixing section away from the supply section. The action section is located in the injection channel of the mixing section. The spray gun includes a first flow regulating valve for controlling the solid powder flow of the supply section; the spray gun also includes a second flow regulating valve for controlling the liquid flow of the extension section.

10. A RH dip tube spraying device, characterized in that: include: The spray gun according to any one of claims 1 to 9; A liquid storage tank connected to the extension section of the spray gun; The solid powder tank is communicated with an end of the main nozzle away from the nozzle.

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