A pipe cleaning tool

Abstract

This application provides a pipe cleaning tool, relating to the field of pipe cleaning technology. It includes: an outer pipe with multi-directional flexibility and a slag suction port on its side wall; an inner pipe rotatably fitted inside the outer pipe; the inner pipe also has multi-directional flexibility and a connecting port on its side wall, the slag suction port and the connecting port being correspondingly positioned and interconnected; a cleaning mechanism connected to the outer pipe, which uses the rotation of the outer pipe to clean the inner wall of the pipe using vibration, friction, impact, or any combination thereof; and a negative pressure device connected to one end of the inner pipe to generate suction at the slag suction port and the connecting port. This application improves the cleaning efficiency inside U-shaped pipes and can effectively remove silicon powder deep inside the U-shaped pipe.

Description

Technical Field

[0001] This utility model relates to the field of pipeline cleaning technology, and in particular to a tool for cleaning inside pipes. Background Technology

[0002] The exhaust gas from the reduction furnace contains some silicon powder. During the treatment of the exhaust gas, the heat exchange efficiency of the inner wall of the tube bundle of the exhaust gas jacketed heat exchanger will be affected by the accumulation of silicon powder.

[0003] The exhaust gas jacketed heat exchanger has a continuous welded and butt-jointed U-shaped tube structure with numerous bends. Due to process characteristics, conventional high-pressure water cleaning or chemical cleaning methods cannot be used to descale the inside of the tubes. The current cleaning method involves manual disassembly of the equipment, which has the following drawbacks:

[0004] 1. Low cleaning efficiency: The time required for manual cleaning using homemade hooks or small shovels after dismantling the equipment is relatively long (12-16 hours).

[0005] 2. Limited cleaning scope: Existing cleaning methods cannot effectively clean the material (silicon powder) deep inside the tube bundle. When the blockage is severe, the jacket of the equipment needs to be cut off and the U-shaped tube bundle needs to be broken and disassembled before cleaning, which seriously affects normal production operation.

[0006] 3. Significant equipment damage: Manual cleaning can easily scratch the inner wall of the pipes, shortening the service life of the equipment. Utility Model Content

[0007] In view of the above situation, the present invention provides a pipe cleaning tool, which aims to solve at least one of the defects pointed out in the background art.

[0008] To achieve the above objectives, this utility model provides the following technical solution:

[0009] This utility model provides a pipe cleaning tool, including:

[0010] The outer tube has multi-directional flexibility, and the side wall of the outer tube has a slag suction port;

[0011] The inner tube is rotatably fitted inside the outer tube; the inner tube has multi-directional deflection, and the side wall of the inner tube has a connecting port, the position of the slag suction port and the connecting port are corresponding and interconnected;

[0012] The cleaning mechanism is connected to the outer pipe. The cleaning mechanism uses the rotation of the outer pipe to clean the inner wall of the pipe being cleaned by one or any combination of vibration, friction, and impact.

[0013] The negative pressure device is connected to one end of the inner tube and is used to generate suction at the slag suction port and the connecting port.

[0014] In some embodiments of this utility model, the cleaning mechanism includes a drill bit connected to one end of the outer tube.

[0015] In some embodiments of this utility model, the cleaning mechanism further includes a pendulum, which is detachably connected to the side wall of the outer tube.

[0016] In some embodiments of this utility model, the pendulum is connected to a connecting rope, and a connecting ring is provided on the outer tube. The pendulum is connected to the connecting ring through the connecting rope.

[0017] In some embodiments of this invention, the hardness of the pendulum is less than the hardness of the pipe being cleaned.

[0018] In some embodiments of this utility model, the cleaning mechanism further includes a brush head, which is detachably connected to the side wall of the outer tube.

[0019] In some embodiments of this utility model, the outer tube and the inner tube are made of flexible metal tubing.

[0020] In some embodiments of this invention, the hardness of the outer tube is less than the hardness of the pipe being cleaned.

[0021] In some embodiments of this utility model, the outer tube is driven by a drive motor.

[0022] In some embodiments of this utility model, the negative pressure device is connected to one end of the inner pipe via a slag discharge pipe; a filter is detachably installed between the inlet of the negative pressure device and the outlet of the slag discharge pipe.

[0023] The embodiments of this utility model have at least the following advantages or beneficial effects:

[0024] In use, the outer and inner tubes are inserted into the corresponding unblocking ports on the U-shaped tube. During the pushing of the outer and inner tubes, their shapes can be adapted to the shape of the bend in the U-shaped tube, allowing the cleaning mechanism on the outer tube to move to the depth of the U-shaped tube. It uses one or any combination of vibration, friction, and impact to clean the silicon powder accumulated on the inner wall of the U-shaped tube. The cleaned silicon powder is continuously discharged after passing through the slag suction port, connecting port, inner tube, and slag discharge pipe in sequence under the suction force provided by the negative pressure equipment. The entire cleaning process takes only 4 to 6 hours per unit.

[0025] Therefore, this application improves the cleaning efficiency inside the U-shaped tube and can effectively clean the silicon powder deep inside the U-shaped tube.

[0026] Other features and advantages of this invention will be set forth in the description which follows, and will be apparent in part from the description, or may be learned by practicing the invention. Attached Figure Description

[0027] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0028] Figure 1 This is a schematic diagram of the pipe cleaning tool.

[0029] icon:

[0030] 1-Outer pipe, 11-Slag suction port,

[0031] 2-Inner tube, 21-Connecting port,

[0032] 31-Drill bit, 32-Pendulum, 33-Connecting rope, 34-Connecting ring,

[0033] 4-Negative pressure equipment, 41-Slag discharge pipe, 42-Filter,

[0034] 51- Rigid connecting pipe, 52- Flange, 53- Bearing, 54- Transmission gear, 55- Drive motor. Detailed Implementation

[0035] In the following description, only certain exemplary embodiments are briefly described. As those skilled in the art will recognize, the described embodiments can be modified in various ways without departing from the spirit or scope of the present invention.

[0036] In the description of the embodiments of this utility model, it should be understood that the terms "inner", "outer", "length", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. They are only for the convenience of describing the embodiments of this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the embodiments of this utility model.

[0037] Furthermore, the term "multiple" means two or more, unless otherwise explicitly specified.

[0038] In this embodiment of the invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this embodiment of the invention according to the specific circumstances.

[0039] The embodiments of this utility model will be described in detail below.

[0040] See Figure 1 This embodiment provides a tube cleaning tool for cleaning silicon powder accumulated inside the U-shaped tube of a tail gas jacketed heat exchanger. The tube cleaning tool includes an outer tube, an inner tube, a cleaning mechanism, and a negative pressure device.

[0041] The outer tube has multi-directional deflection, and the side wall of the outer tube has a slag suction port; multiple slag suction ports are arranged at intervals along the length of the outer tube.

[0042] The inner tube is rotatably fitted inside the outer tube; the inner tube has multi-directional deflection, and there are connecting ports on the side wall of the inner tube. The positions of the slag suction port and the connecting ports are corresponding and interconnected; multiple connecting ports are arranged at intervals along the length of the inner tube.

[0043] The cleaning mechanism is connected to the outer tube. The cleaning mechanism uses the rotation of the outer tube to clean the silicon powder accumulated on the inner wall of the U-shaped tube by one or any combination of vibration, friction, and impact.

[0044] The negative pressure device is connected to one end of the inner tube through the slag discharge pipe. It is used to generate suction at the slag suction port and the connecting port to draw the silicon powder removed by the cleaning mechanism to the slag discharge pipe for discharge.

[0045] During use, the outer and inner tubes are inserted into the corresponding unblocking ports on the U-shaped tube. As the outer and inner tubes are pushed, their shapes can be adapted to the shape of the bend in the U-shaped tube, allowing the cleaning mechanism on the outer tube to move to the depth of the U-shaped tube. The outer tube rotates while the inner tube does not rotate, using vibration, friction, or impact, or any combination thereof, to clean the silicon powder accumulated on the inner wall of the U-shaped tube. The cleaned silicon powder is then continuously discharged after passing through the slag suction port, connecting port, inner tube, and slag discharge pipe in sequence under the suction force provided by the negative pressure equipment. The entire cleaning process takes only 4 to 6 hours per unit.

[0046] The outer and inner tubes can be made of flexible metal hoses to give them multi-directional flexibility; the hardness of the outer tube is less than that of the U-tube of the exhaust gas jacketed heat exchanger to avoid scratching the base material (the pipe being cleaned).

[0047] Understandably, although the outer tube has multi-directional deflection, it can still drive the drill bit to rotate because the silica powder is easy to detach after contact with the drill bit, and the drill bit will not be subjected to a large reaction force when it is working.

[0048] The method of driving the outer tube to rotate is not limited. In a specific implementation scenario, the rotation of the outer tube is achieved as follows: one end of the outer tube is connected to a rigid connecting pipe via a flange. The inner wall of the rigid connecting pipe is connected to the outer wall of the inner tube via a bearing. A transmission gear is installed on the outer wall of the rigid connecting pipe, and the transmission gear is connected to a drive motor. The drive motor is mounted on other components, and its direction and speed are adjustable. The drive motor drives the transmission gear to rotate, which in turn drives the rigid connecting pipe and the outer tube to rotate. The outer tube then drives the cleaning mechanism to perform cleaning.

[0049] When the cleaning mechanism uses vibration to clean the silicon powder accumulated on the inner wall of the U-shaped tube, it converts the rotational motion of the outer tube into vibration of the silicon powder; when the cleaning mechanism uses friction to clean the silicon powder accumulated on the inner wall of the U-shaped tube, it converts the rotational motion of the outer tube into friction of the silicon powder; when the cleaning mechanism uses impact to clean the silicon powder accumulated on the inner wall of the U-shaped tube, it converts the rotational motion of the outer tube into impact of the silicon powder.

[0050] In this embodiment, a combination of vibration, friction, and impact is used. Specifically, the cleaning mechanism includes a drill bit connected to one end of the outer tube. The drill bit can rotate with the outer tube. When the drill bit rotates, it generates vibration, friction, and impact on the silicon powder to clean the silicon powder inside the U-shaped tube.

[0051] The cleaning mechanism also includes a pendulum, which is detachably connected to the side wall of the outer tube. When the outer tube rotates, the centrifugal force of the pendulum increases the distance between the pendulum and the outer tube, causing the pendulum to come into contact with the silicon powder and generate vibration, friction and impact to achieve cleaning.

[0052] The pendulum is connected by a connecting rope, and the outer tube has a connecting ring similar to a key ring. The pendulum is connected to the connecting ring via the connecting rope, enabling a detachable connection between the pendulum and the outer tube. This facilitates the disassembly and replacement of the pendulum and allows for the selection of other types of cleaning tools as needed, such as a brush head (not shown in the figure) to replace the pendulum. In this embodiment, either the pendulum or the brush head is optional. In other embodiments, both the pendulum and the brush head may be connected to the outer tube simultaneously.

[0053] The hardness of the drill bit, pendulum, and brush head mentioned above is all less than the hardness of the U-shaped tube (the pipe being cleaned) to avoid damaging the U-shaped tube.

[0054] A filter is detachably installed between the inlet of the negative pressure equipment and the outlet of the slag discharge pipe; the filter traps silicon powder to ensure the normal operation of the negative pressure equipment; the silicon powder trapped in the filter can be cleaned after the filter is removed.

[0055] Finally, it should be noted that the above are merely preferred embodiments of this application and are not intended to limit this application. For those skilled in the art, this application can have various modifications and variations. Without conflict, the embodiments and features described in the embodiments of this application can be arbitrarily combined with each other. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A pipe cleaning tool, characterized in that, include: The outer tube has multi-directional deflection, and the side wall of the outer tube has a slag suction port; The inner tube is rotatably fitted inside the outer tube; the inner tube has multi-directional deflection, and the side wall of the inner tube has a connecting port, the position of the slag suction port and the connecting port are corresponding and interconnected; A negative pressure device is connected to one end of the inner tube and is used to generate suction at the slag suction port and the connecting port. A cleaning mechanism is connected to the outer pipe. The cleaning mechanism uses the rotation of the outer pipe to clean the inner wall of the pipe being cleaned by one or any combination of vibration, friction, and impact.

2. The pipe cleaning tool according to claim 1, characterized in that, The cleaning mechanism includes a drill bit connected to one end of the outer tube.

3. The pipe cleaning tool according to claim 2, characterized in that, The cleaning mechanism also includes a pendulum, which is detachably connected to the side wall of the outer tube.

4. The pipe cleaning tool according to claim 3, characterized in that, The pendulum is connected to a connecting rope, and a connecting ring is provided on the outer tube. The pendulum is connected to the connecting ring through the connecting rope.

5. The pipe cleaning tool according to claim 3, characterized in that, The hardness of the pendulum is less than the hardness of the pipe being cleaned.

6. The pipe cleaning tool according to any one of claims 2 to 5, characterized in that, The cleaning mechanism also includes a brush head, which is detachably connected to the side wall of the outer tube.

7. The pipe cleaning tool according to claim 1, characterized in that, The outer tube and the inner tube are made of flexible metal tubing.

8. The pipe cleaning tool according to claim 1, characterized in that, The hardness of the outer tube is less than that of the pipe being cleaned.

9. The pipe cleaning tool according to claim 1, characterized in that, The outer tube is driven by a drive motor.

10. The pipe cleaning tool according to claim 1, characterized in that, The negative pressure device is connected to one end of the inner pipe via a slag discharge pipe; a filter is detachably installed between the inlet of the negative pressure device and the outlet of the slag discharge pipe.

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