WO2023065765A1

WO2023065765A1 - Method and device for cleaning inner wall of furnace tube

Info

Publication number: WO2023065765A1
Application number: PCT/CN2022/109016
Authority: WO
Inventors: 钱诚; 李刚; 霍召军
Original assignee: 江苏亚电科技有限公司
Priority date: 2021-10-21
Filing date: 2022-07-29
Publication date: 2023-04-27

Abstract

A method and device for cleaning an inner wall of a furnace tube. A furnace tube (9) is vertically placed; a cleaning liquid is sprayed from a furnace tube cleaning nozzle, and a U-shaped pipe (82) is driven to drive the furnace tube cleaning nozzle to rise in the furnace tube (9); and when the U-shaped pipe (82) rises to the top, the outflow of the cleaning liquid is slowed by means of a flexible baffle (83), such that the space from the flexible baffle (83) to the top of the furnace tube (9) can be filled with the cleaning liquid. The cleaning device solves the problem of a lifting cleaning assembly (8) having a limited lifting height, and can also clean up the inner wall of the top of the furnace tube, thereby improving the cleaning effect.

Description

Method and device for cleaning inner wall of furnace tube

This application claims the priority of the Chinese national patent applications with application numbers 2021112265145 and 2021112279097, and the contents of the above two application documents are incorporated herein by reference.

technical field

The application belongs to the technical field of furnace tube cleaning equipment, and in particular relates to a method and device for cleaning the inner wall of a furnace tube.

Background technique

Chinese patent document CN208853393U discloses a vertical furnace tube cleaning mechanism, which uses a fixed nozzle to clean the interior of the furnace tube. However, in order to improve the cleaning effect, the height of the internal spray pipe must be matched with the internal height of the furnace tube, which leads to the fact that when the furnace tube is assembled, the furnace tube needs to be lifted very high to be placed on the support seat with the internal cleaning tube . At the same time, the nozzle of the internal cleaning pipe is fixed. If the nozzle does not rotate or the furnace tube does not rotate, the cleaning liquid sprayed from the nozzle will only flush a specific area.

Contents of the invention

The technical problem to be solved by the present invention is to provide a method for cleaning the inner wall of the furnace tube with good cleaning effect in order to solve the deficiencies in the prior art.

The technical solution adopted by the present invention to solve its technical problems is:

A method for cleaning the inner wall of a furnace tube, comprising the following steps:

S1: Place the furnace tube on the support frame in a vertical manner, and align the furnace tube with the U-shaped tube;

S2: Through the lifting and cleaning assembly, the U-shaped tube with the furnace tube cleaning nozzle at the end is inserted into the furnace tube from the bottom opening of the furnace tube through the support frame, and the furnace tube cleaning nozzle sprays cleaning liquid, and drives the U-shaped tube to drive the furnace tube The cleaning nozzle is raised in the furnace tube, and a flexible baffle is also set on the U-shaped tube;

S3: When the U-shaped tube rises to the top, the flexible baffle delays the outflow of the cleaning solution so that the space between the flexible baffle and the top of the furnace tube can be filled with cleaning solution for a period of time;

S4: The lifting and cleaning component drives the U-shaped tube to drive the cleaning nozzle of the furnace tube down in the furnace tube. When the cleaning nozzle of the furnace tube drops to the lowest end, the cleaning liquid is turned off to complete the cleaning.

Preferably, in the method for cleaning the inner wall of the furnace tube of the present invention, the flexible baffle includes: a rigid disk in the middle, and a flexible edge located at the edge of the rigid disk.

Preferably, in the method for cleaning the inner wall of a furnace tube according to the present invention, the flexible edge has radially arranged openings.

Preferably, the furnace tube inner wall cleaning method of the present invention, the furnace tube cleaning nozzle, includes:

a tube body with a hollow channel in the middle;

The cover body, the cover is mounted on the top of the tube body;

The rotating body is fixed on the top of the tube body by the limit of the cover body;

The top end of the pipe body has a water hole leading to the side wall, and the middle of the rotating body has a hollow flow channel communicating with the water hole. The side of the rotating body is provided with side nozzles, the communication channel between the top nozzle and the side nozzles and the flow channel is not in the same plane as the vertical plane of the central axis of the rotating body, and the cleaning liquid flows through the hollow channel and the water hole of the pipe body. 1. The flow channel of the rotating body can drive the rotating body to rotate when ejected from the top nozzle and the side nozzle.

Preferably, in the method for cleaning the inner wall of the furnace tube of the present invention, the flow channel is hemispherical.

Preferably, in the method for cleaning the inner wall of the furnace tube of the present invention, the included angle between the top surface of the rotating body and the vertical plane of the central axis of the rotating body is 30-60°.

Preferably, in the furnace tube inner wall cleaning method of the present invention, the side of the rotary body also has a sliding block, and by adjusting the position of the sliding block, part of the side nozzles can be blocked to adjust the water spray volume of the side nozzles.

Preferably, in the method for cleaning the inner wall of the furnace tube of the present invention, there is also a booster groove inside the sliding block, the opening of the booster groove is located on the side of the sliding block, and part or all of the side nozzles can be adjusted by adjusting the position of the sliding block. The liquid is ejected from the booster tank to adjust the rotation speed of the rotating body.

The present invention also provides a furnace tube cleaning device, comprising:

frame;

The support frame is located in the frame and is used to support the furnace tube so that the furnace tube is fixed vertically, and the opening of the furnace tube is located at the bottom;

The lifting cleaning component is used to extend into the furnace tube to complete the cleaning of the inside of the furnace tube;

The lifting cleaning assembly includes a lifting drive member, a U-shaped tube, and a furnace tube cleaning nozzle according to any one of claims 1-5 arranged at the end of the U-shaped tube;

The U-shaped tube can pass through the support frame and extend into the furnace tube from the bottom opening of the furnace tube, and the lifting drive member drives the U-shaped tube to drive the furnace tube cleaning nozzle to perform lifting movements in the furnace tube;

Furnace tube cleaning nozzles include:

a tube body with a hollow channel in the middle;

The cover body, the cover is mounted on the top of the tube body;

The beneficial effects of the present invention are:

In the method for cleaning the inner wall of the furnace tube in this embodiment, the furnace tube is placed vertically without rotation or complex movement mechanism, so as to prevent the furnace tube from being damaged; by filling the space at the top of the furnace tube with cleaning liquid, the limited lifting height of the lifting and cleaning components is overcome , and the problem that the inner wall of the top of the furnace tube is difficult to clean, so that the inner wall of the top of the furnace tube can also be cleaned to improve the cleaning effect.

Description of drawings

The technical solution of the present application will be further described below in conjunction with the accompanying drawings and embodiments.

Fig. 1 is a schematic structural view of an embodiment of the furnace tube cleaning nozzle of Example 1 of the present application;

Fig. 2 is a sectional view of the furnace tube cleaning nozzle in Fig. 1;

3 is a schematic structural view of another embodiment of the furnace tube cleaning nozzle in Example 1 of the present application;

Fig. 4 is the structural representation of the furnace tube cleaning device of embodiment 2 of the present application;

Fig. 5 is a schematic structural view of the lifting and cleaning assembly of Embodiment 2 of the present application;

Fig. 6 is a position diagram of the flexible baffle when the lifting and cleaning assembly according to Embodiment 2 of the present application is raised to the top;

Fig. 7 is a schematic structural diagram of a flexible baffle in Example 2 of the present application;

The reference signs in the figure are:

1 tube body;

2 rotating bodies;

3 cover body;

6 support frame;

7 frame;

8 lifting and cleaning components;

9 furnace tube;

11 water holes;

20 runners;

21 top spout;

22 side spout;

23 sliders;

24 boost slots;

81 lifting drive parts;

82 U-shaped tubes;

83 flexible baffle;

831 Rigid plate;

832 flexible edges;

833 openings.

Detailed ways

It should be noted that, in the case of no conflict, the embodiments in the present application and the features in the embodiments can be combined with each other.

In the description of the present application, it should be understood that the terms "center", "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", " The orientation or positional relationship indicated by "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present application and Simplified descriptions do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and thus should not be construed as limiting the scope of protection of the present application. In addition, the terms "first", "second", etc. are used for descriptive purposes only, and should not be understood as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, a feature defined as "first", "second", etc. may expressly or implicitly include one or more of that feature. In the description of the present invention, unless otherwise specified, "plurality" means two or more.

In the description of this application, it should be noted that unless otherwise specified and limited, the terms "installation", "connection", and "connection" should be understood in a broad sense, for example, it can be a fixed connection or a detachable connection. Connected, or integrally connected; it may be mechanically connected or electrically connected; it may be directly connected or indirectly connected through an intermediary, and it may be the internal communication of two components. Those of ordinary skill in the art can understand the specific meanings of the above terms in this application based on specific situations.

The technical solution of the present application will be described in detail below with reference to the accompanying drawings and embodiments.

Example 1

This embodiment provides a furnace tube cleaning nozzle, as shown in Figures 1 and 2, comprising:

The tube body 1 has a hollow channel in the middle;

Cover body 3, the cover is mounted on the top of the tube body 1;

The rotating body 2 is fixed on the top of the tube body 1 by the limit of the cover body 3;

The top end of the pipe body 1 has a water hole 11 leading to the side wall, and the middle of the rotating body 2 has a hollow flow channel 20 communicating with the water hole 11. The top of the rotating body 2 is an inclined slope, and the inclined surface A top spout 21 is provided, and a side spout 22 is provided on the side of the rotating body 2, and the communication channel between the top spout 21 and the side spout 22 and the flow channel 20 is not coplanar with the vertical plane of the central axis of the rotating body 2 , the cleaning liquid flows through the hollow channel of the pipe body 1, the water hole 11, and the flow channel 20 of the rotating body 2, and when sprayed from the top nozzle 21 and the side nozzle 22, it can drive the rotating body 2 to rotate.

Further, the flow channel 20 is hemispherical. The hemispherical flow channel 20 can store a certain amount of cleaning liquid, so as to increase the ejection pressure of the top nozzle 21 and the side nozzle 22 .

Further, the angle between the top surface of the rotating body 2 and the vertical plane of the central axis of the rotating body 2 is 30-60°, such as 30°, 40°, 50°, 60° and so on.

Further, as shown in FIG. 3 , the rotating body 2 also has a sliding block 23 on its side, and by adjusting the position of the sliding block 23 , part of the side spouts 22 can be blocked to adjust the water spray volume of the side spouts 22 .

Further, the sliding block 23 also has a booster groove 24, the opening of the booster groove 24 is located on the side of the sliding block 23, adjusting the position of the sliding block 23 can move part or all of the liquid in the side spout 22 from The injection in the booster groove 24 is used to adjust the rotation speed of the rotating body 2 .

In the furnace tube cleaning nozzle of this embodiment, when the cleaning liquid flows through the hollow channel of the tube body 1, the water hole 11, and the flow channel 20 of the rotating body 2, it can drive the rotation when it is sprayed from the top nozzle 21 and the side nozzle 22. Body 2 rotates. The rotation of the rotary body 2 is completed without additional power equipment, and the cleaning liquid ejected from the top spout 21 and the side spout 22 increases the spray range of the cleaning liquid and improves the cleaning effect.

Example 2

This embodiment provides a furnace tube cleaning device, as shown in Figure 4, comprising:

frame 7;

The support frame 6 is located in the frame 7, and is used to support the furnace tube 9 so that the furnace tube 9 is fixed vertically, and the opening of the furnace tube 9 is located at the bottom;

The lifting and cleaning assembly 8 is used to extend into the furnace tube 9 to complete the cleaning of the inside of the furnace tube 9;

The lifting cleaning assembly 8 includes a lifting drive member 81, a U-shaped tube 82, and a furnace tube cleaning nozzle as described in Embodiment 1 arranged at the end of the U-shaped tube 82;

The U-shaped tube 82 can pass through the support frame 6 (the support frame 6 is a hollow structure) and extend into the furnace tube 9 from the bottom opening of the furnace tube, and the lifting driver 81 drives the U-shaped tube 82 to drive the furnace tube cleaning nozzle Do lifting motion in furnace tube 9.

Further, a flexible baffle 83 is also provided on the U-shaped tube 82, and the flexible baffle 83 is used to delay the outflow of the cleaning liquid when the U-shaped tube 82 rises to the top, so that the flexible baffle 83 reaches the furnace tube. 9 The space at the top can be filled with cleaning fluid. Since the nozzle cannot directly flush the inner wall of the furnace tube top, the flexible baffle 83 is set to slow down the flow of the cleaning liquid, so that when the flexible baffle 83 reaches the top of the furnace tube 9, the flexible baffle 83 of the cleaning liquid that slows the flow rate can The space at the top of the furnace tube 9 is filled with cleaning solution (as long as the inflow velocity of the cleaning solution is greater than the flow rate of the cleaning solution from the flexible baffle 83, it can be filled with cleaning solution within a certain period of time), thereby flushing the top of the furnace tube 9. The flexible flexible baffle 83 can also be filled with the cleaning liquid and deform in time to discharge the excess cleaning liquid (equivalent to a one-way valve) when the cleaning liquid is continuously filled. In addition, the existence of the flexible baffle 83 can also make cleaning The liquid flows down along the edge of the flexible baffle 83 to scour the inner wall of the furnace tube.

The flexible baffle 83 , as shown in FIG. 7 , includes: a rigid disc body 831 in the middle, and a flexible edge 832 located at the edge of the rigid disc body 831 . The flexible edge 832 has radially arranged openings 833 . If the amount of cleaning fluid is too large, this will deform the flexible edge 832 under pressure, allowing the cleaning fluid to flow out there. The opening 833 can improve the deformability of the flexible edge 832 and make the flexible edge 832 deform more easily.

Example 3

This embodiment provides a method for cleaning the inner wall of a furnace tube, using the furnace tube cleaning device of Embodiment 2, comprising the following steps:

S1: Place the furnace tube on the support frame in a vertical manner, and align the furnace tube with the U-shaped tube 82;

S2: Through the lifting and cleaning assembly 8, the U-shaped tube 82 with the furnace tube cleaning nozzle at the end passes through the support frame 6 and extends into the furnace tube 9 from the bottom opening of the furnace tube. The furnace tube cleaning nozzle sprays cleaning liquid and drives the U The U-shaped tube 82 drives the furnace tube cleaning nozzle to rise in the furnace tube 9, and the U-shaped tube 82 is also provided with a flexible baffle 83;

S3: when the U-shaped tube 82 was raised to the top, the outflow of the cleaning solution was delayed by the flexible baffle 83 so that the space between the flexible baffle 83 and the top of the furnace tube 9 could be filled with the cleaning solution, and continued for a period of time;

S4: The lifting and cleaning component 8 drives the U-shaped tube 82 to drive the furnace tube cleaning nozzle to descend in the furnace tube 9. When the furnace tube cleaning nozzle descends to the lowest end, the cleaning liquid is turned off to complete the cleaning.

The structure of the furnace tube cleaning nozzle is as described in the embodiment.

This embodiment has the following advantages:

1. The furnace tube is placed vertically without rotation or complex movement mechanism to prevent damage to the furnace tube;

2. By filling the space at the top of the furnace tube 9 with cleaning liquid, it overcomes the problem that the lifting height of the cleaning assembly 8 is limited and the inner wall of the top of the furnace tube 9 is difficult to clean, so that the inner wall of the top of the furnace tube 9 can also be cleaned, improving cleaning Effect.

Inspired by the above-mentioned ideal embodiment according to the present application, through the above-mentioned description content, relevant staff can make various changes and modifications within the scope of not departing from the technical idea of this application. The technical scope of this application is not limited to the content in the specification, but must be determined according to the scope of the claims.

Claims

A method for cleaning the inner wall of a furnace tube, comprising the following steps:

S1: place the furnace tube on the support frame in a vertical manner, and align the furnace tube with the U-shaped tube (82);

S2: Through the lifting and cleaning assembly (8), the U-shaped tube (82) with the furnace tube cleaning nozzle at the end passes through the support frame (6) and extends into the furnace tube (9) from the bottom opening of the furnace tube, and the furnace tube cleaning nozzle sprays out cleaning fluid, and drive the U-shaped tube (82) to drive the furnace tube cleaning nozzle to rise in the furnace tube (9), and a flexible baffle (83) is also set on the U-shaped tube (82);

S3: When the U-shaped pipe (82) rises to the top, the outflow of the cleaning solution is delayed by the flexible baffle (83) so that the space between the flexible baffle (83) and the top of the furnace tube (9) can be filled with cleaning solution, and continue for a period of time;

S4: The lifting and cleaning assembly (8) drives the U-shaped tube (82) to drive the furnace tube cleaning nozzle to descend in the furnace tube (9). When the furnace tube cleaning nozzle descends to the lowest end, the cleaning liquid is turned off to complete the cleaning.
The furnace tube inner wall cleaning method according to claim 1, characterized in that, the flexible baffle (83) comprises: a rigid disc body (831) in the middle, and a flexible edge ( 832).
The method for cleaning the inner wall of the furnace tube according to claim 2, characterized in that, the flexible edge (832) has openings (833) arranged in a radial direction.
The furnace tube inner wall cleaning method according to claim 1, wherein the furnace tube cleaning nozzle comprises:

A pipe body (1) with a hollow channel in the middle;

The cover (3), the cover is mounted on the top of the tube (1);

The rotating body (2) is fixed on the top of the pipe body (1) by the limit of the cover body (3);

The top end of the pipe body (1) has a water hole (11) leading to the side wall, and the middle of the rotating body (2) has a hollow flow channel (20) communicating with the water hole (11). The top of the rotating body (2) is an inclined slope, and the inclined surface is provided with a top spout (21), and the side of the rotating body (2) is provided with a side spout (22), and the top spout (21) and the side spout ( 22) The communication channel with the flow channel (20) is not coplanar with the vertical plane of the central axis of the rotating body (2), and the cleaning liquid flows through the hollow channel of the pipe body (1), the water hole (11), the rotating body (2) ) of the runner (20), which can drive the rotating body (2) to rotate when ejected from the top nozzle (21) and the side nozzle (22).
The method for cleaning the inner wall of the furnace tube according to claim 4, characterized in that, the flow channel (20) is hemispherical.
The method for cleaning the inner wall of the furnace tube according to claim 4, characterized in that the angle between the top surface of the rotating body (2) and the vertical plane of the central axis of the rotating body (2) is 30-60°.
The method for cleaning the inner wall of the furnace tube according to claim 4, characterized in that, the side of the rotating body (2) also has a sliding block (23), and by adjusting the position of the sliding block (23), part of the side nozzles (22) can be blocked , to adjust the spray volume of the side spout (22).
The furnace tube inner wall cleaning method according to claim 7, characterized in that, a booster groove (24) is also provided in the sliding block (23), and the opening of the booster groove (24) is located in the sliding block ( 23), adjusting the position of the sliding block (23) can eject part or all of the liquid in the side nozzle (22) from the booster groove (24) to adjust the rotational speed of the rotating body (2).
A furnace tube cleaning device is characterized in that it comprises:

frame(7);

The support frame (6), located in the frame (7), is used to support the furnace tube (9) so that the furnace tube (9) is fixed vertically, and the opening of the furnace tube (9) is located at the bottom;

The lifting cleaning assembly (8) is used to extend into the furnace tube (9) to complete the cleaning of the inside of the furnace tube (9);

The lifting cleaning assembly (8) comprises a lifting driver (81), a U-shaped tube (82), and the furnace tube cleaning nozzle according to any one of claims 1-5 arranged at the end of the U-shaped tube (82);

The U-shaped tube (82) can pass through the support frame (6) and extend into the furnace tube (9) from the bottom opening of the furnace tube, and the lifting driver (81) drives the U-shaped tube (82) to drive the furnace tube The cleaning nozzle moves up and down in the furnace tube (9);

Furnace tube cleaning nozzle (9) includes:

A pipe body (1) with a hollow channel in the middle;

The cover (3), the cover is mounted on the top of the tube (1);

The rotating body (2) is fixed on the top of the pipe body (1) by the limit of the cover body (3);

The top end of the pipe body (1) has a water hole (11) leading to the side wall, and the middle of the rotating body (2) has a hollow flow channel (20) communicating with the water hole (11). The top of the rotating body (2) is an inclined inclined plane, on which a top spout (21) is provided, and the side of the rotating body (2) is provided with a side spout (22), and the top spout (21) and the side spout ( 22) The communication channel with the flow channel (20) is not coplanar with the vertical plane of the central axis of the rotating body (2), and the cleaning liquid flows through the hollow channel of the pipe body (1), the water hole (11), the rotating body (2) ) of the runner (20), which can drive the rotating body (2) to rotate when ejected from the top nozzle (21) and the side nozzle (22).