A pipeline internal cleaning device

Abstract

The invention discloses a pipeline internal cleaning device, which comprises: a connecting seat with a cavity, an air source connecting piece connected to the cavity; an abrasive supply mechanism, the abrasive supply mechanism comprises an abrasive buffering bin for buffering abrasives, an abrasive introduction pipe whose lower part partially or completely extends into the cavity and whose upper part is connected to the abrasive buffering bin, the part of the abrasive introduction pipe extending into the cavity is formed with a discharge port, and a gap is formed between the part and the inner wall of the inner cavity; a sealing member, the sealing member is movably arranged in the up-down direction relative to the discharge port, and one end of the sealing member is formed with a sealing protrusion which cooperates with the discharge port to realize the opening and closing of the discharge port; the device can make the abrasive more evenly distributed in the airflow while realizing the simultaneous cleaning of the airflow and the abrasive, and can avoid the problem of blockage of the abrasive discharge port, and the cleaning effect is good.

Description

Technical Field

[0001] The present invention belongs to the technical field of chemical fiber production, and in particular to a pipeline used to transport fluids during the chemical fiber production process. Carbonized attachments and the like may form inside the pipeline, which not only affect the flow rate but may also be mixed in the production fluid, thereby affecting the production speed and quality, etc. The present invention specifically relates to a pipeline internal cleaning device. Background Art

[0002] At present, in order to solve the problem of undesirable impurities such as carbides attached to the inner wall of the pipeline and avoid affecting the flow rate and purity of the production fluid, the pipeline is usually disassembled and replaced after a period of use, and the disassembled pipeline is cleaned and impurities are removed, such as by flushing with high-temperature steam or compressed air, or knocking on the outer wall of the pipeline to shake off the attachments, etc. However, the cleaning and impurity removal effects of these methods are insufficient. For example, when the pipeline is long or has bends, the cleaning effect on the rear section of the pipeline or the middle pipeline is significantly reduced. In order to achieve the specified cleaning effect, too many repetitions are required, which is time-consuming and labor-intensive. The method of knocking on the outer wall of the pipeline to shake off the attachments is also not only time-consuming and labor-intensive, but also has poor results. There are also existing methods of using abrasives and liquid cleaning agents for cleaning. For example, a compressed gas transformer-type pipeline cleaning and repair mechanism disclosed in the prior art includes a compressed gas generating device, a compressed gas transformer, a cleaning and repair material supply device and a cleaning and repair material recovery device; the air outlet end of the compressed gas generating device is connected to the air inlet end of the compressed gas transformer, the air outlet end of the compressed gas transformer is connected to the air inlet end of the cleaning and repair material supply device, the air outlet end of the cleaning and repair material supply device is connected to the air inlet end of the target pipeline, and the air outlet end of the target pipeline is connected to the air inlet end of the cleaning and repair material recovery device; however, the cleaning and repair mechanism still has the problem of uneven distribution of abrasives when cleaning the pipeline, poor cleaning effect, and easy blockage of the abrasive at the discharge port, especially during the cleaning process, if it is necessary to close the abrasive input, there is a problem of easy blockage at the closing valve, which increases the complexity and difficulty of the work. Summary of the invention

[0003] The purpose of the present invention is to overcome the shortcomings of the prior art and provide a new pipeline internal cleaning device, which can achieve simultaneous cleaning of airflow and abrasive while making the abrasive more evenly distributed in the airflow and avoiding the problem of blockage of the abrasive discharge port.

[0004] In order to achieve the above object, the technical solution adopted by the present invention is:

[0005] A pipeline internal cleaning device, the cleaning device comprising:

[0006] A connecting seat having a cavity;

[0007] An air source connecting piece, the air source connecting piece is connected and communicated with the cavity;

[0008] an abrasive supply mechanism, the abrasive supply mechanism comprising an abrasive buffering bin for buffering abrasives, an abrasive introduction pipe partially or completely extending into the cavity at the lower part and communicating with the abrasive buffering bin at the upper part, a discharge port being formed at the part of the abrasive introduction pipe extending into the cavity and a gap being formed between the part and the inner wall of the inner cavity;

[0009] A sealing member is arranged to be movable in the up-down direction relative to the discharge port, and a sealing protrusion is formed at one end of the sealing member to cooperate with the discharge port to realize the opening and closing of the discharge port.

[0010] According to some preferred aspects of the present invention, the portion of the abrasive introduction tube extending into the cavity is wider at the top and narrower at the bottom.

[0011] According to some preferred aspects of the present invention, the discharge port is located in the middle of the cavity.

[0012] According to some preferred aspects of the present invention, the diameter of the discharge port is 0.05-0.3 times the width of the cavity on the same horizontal line as the discharge port.

[0013] According to some preferred and specific aspects of the present invention, when the discharge port is in an open state, the sealing member is away from the discharge port; when the discharge port is in a closed state, the sealing protrusion of the sealing member is inserted into the discharge port.

[0014] According to some preferred aspects of the present invention, center lines of the sealing member, the abrasive inlet pipe, and the discharge port extend in vertical directions respectively.

[0015] According to some preferred aspects of the present invention, the center line of the sealing element, the center line of the abrasive introduction pipe and the center line of the discharge port coincide with each other.

[0016] According to some preferred aspects of the present invention, the flow direction of the airflow supplied by the air source connecting piece is perpendicular to the falling direction of the abrasive supplied by the abrasive supply mechanism.

[0017] According to some preferred aspects of the present invention, the abrasive supplied by the abrasive supply mechanism has at least two particle sizes.

[0018] According to some preferred aspects of the present invention, the cleaning device also includes a gas-solid cleaning material mixing output pipe, one end of the gas-solid cleaning material mixing output pipe is connected to the cavity, and the other end is connected to the pipeline to be cleaned, and the side of the cavity connected to the gas-solid cleaning material mixing output pipe is opposite to the side of the cavity connected to the air source connecting piece.

[0019] According to some preferred aspects of the present invention, the cleaning device further comprises an abrasive hopper and a valve, the abrasive hopper is in communication with the abrasive buffer bin, and the valve is disposed between the abrasive hopper and the abrasive buffer bin.

[0020] Due to the application of the above technical solution, the present invention has the following advantages compared with the prior art:

[0021] The present invention achieves the mixing of abrasives in airflow, especially gas with relatively high pressure such as compressed air, through the cooperation of a specific abrasive supply mechanism, a connecting seat and a sealing member, thereby achieving the cleaning of the interior of a pipeline by airflow and abrasives, and the abrasives can be evenly distributed in the airflow, so that the interior of the pipeline can be cleaned and impurities removed in the circumferential direction without dead angles, and the removed impurities can be taken away with the airflow; at the same time, the cleaning device of the present invention can also close the abrasive discharge port at any time during the cleaning process, and the problem of abrasives blocking the discharge port will not occur, thereby achieving free switching. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0023] Figure 1 This is a schematic diagram of the overall structure of the pipeline internal cleaning device according to an embodiment of the present invention (connected to the pipeline to be cleaned);

[0024] Figure 2 It is a partial cross-sectional schematic diagram of a pipeline internal cleaning device according to an embodiment of the present invention;

[0025] Figure 3 for Figure 2 The enlarged schematic diagram of point A in the middle (the discharge port is closed);

[0026] Among them, 1. connecting seat; 11. cavity; 12. perspective mirror; 2. air source connecting piece; 3. abrasive supply mechanism; 31. abrasive buffer bin; 32. abrasive inlet pipe; 33. discharge port; 34. gap; 4. sealing member; 41. sealing protrusion; 42. operating handle; 5. gas-solid cleaning material mixing output pipe; 6. abrasive funnel; 7. valve; 8. pipeline to be cleaned. DETAILED DESCRIPTION

[0027] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the present invention is described in detail below in conjunction with the accompanying drawings and specific embodiments. In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the present invention, so the present invention is not limited by the specific embodiments disclosed below.

[0028] In the description of the present invention, “plurality” means at least two, for example, two, three, etc., unless otherwise clearly and specifically defined.

[0029] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it 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, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0030] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0031] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it may be directly on the other element or there may be a central element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. The preferred embodiments of the present invention are described in detail below in conjunction with the accompanying drawings.

[0032] The present invention will be further described below in conjunction with the accompanying drawings.

[0033] Example: See Figures 1 to 3As shown, this example provides a pipeline internal cleaning device, which includes a connecting seat 1 with a cavity 11, an air source connecting piece 2, an abrasive supply mechanism 3, and a sealing member 4; wherein, one end of the air source connecting piece 2 is connected to the cavity 11, and the other end is connected to an external air source (the air source includes but is not limited to a compressed air generating device), the abrasive supply mechanism 3 includes an abrasive buffer bin 31 for caching abrasives, an abrasive introduction pipe 32 whose lower part partially or completely extends into the cavity 11 and whose upper part is connected to the abrasive buffer bin 31, the part of the abrasive introduction pipe 32 extending into the cavity 11 is formed with a discharge port 33 and a gap 34 is formed between the part and the inner wall of the inner cavity 11; the sealing member 4 is movably arranged in the up and down direction relative to the discharge port 33, and one end of the sealing member 4 is formed with a sealing protrusion 41 that cooperates with the discharge port 33 to realize the opening and closing of the discharge port 33.

[0034] In this example, the portion of the abrasive inlet tube 32 extending into the cavity 11 is wide at the top and narrow at the bottom, which is similar to an inverted trapezoid, and the discharge port 33 is located in the middle of the cavity 11. At the same time, the diameter of the discharge port 33 is 0.05-0.3 times the width of the cavity 11 on the same horizontal line as the discharge port 33. The discharge port 33 is used to release abrasive particles. The abrasive in this example includes but is not limited to particles such as sea sand. The mesh size can be 80-100 meshes, and abrasives of other materials or particle sizes can also be selected as needed. The setting method of the diameter of the above-mentioned discharge port 33 can make the amount of released abrasive adapt to the airflow flow rate, so as to achieve a better cleaning effect. Moreover, since the part of the abrasive inlet pipe extending into the cavity 11 is an inverted trapezoid, it can reduce the obstruction to the passage of airflow, and can also enable the passing airflow to form a turbulent effect at this place, so that the falling abrasive can be dispersed more evenly in the airflow. At the same time, the discharge port 33 is arranged in the middle of the bottom of the inverted trapezoid, and it is arranged in the middle of the cavity 11, preferably in the center position, so that after the abrasive falls, basically all the abrasives will not be pushed to the top of the pipe by the airflow, especially when abrasives with lighter weight are used, and can be better dispersed in various positions of the airflow, that is, it can be better cleaned and cleaned at various positions of the pipe 8 to be cleaned, thereby ensuring the cleaning effect.

[0035] Furthermore, the abrasive supplied by the abrasive supply mechanism 3 has at least two particle sizes. Abrasives of different particle sizes can further avoid the possibility of the abrasive being concentrated in a certain part of the airflow, thereby increasing the cleaning effectiveness and cleaning effect.

[0036] In this example, when the discharge port 33 is in an open state, the seal 4 is away from the discharge port 33; when the discharge port 33 is in a closed state, the sealing protrusion 41 of the seal 4 is inserted into the discharge port 33. Further, the center lines of the seal 4, the abrasive introduction tube 32, and the discharge port 33 extend in the vertical direction respectively, and the center lines of the seal 4, the abrasive introduction tube 32, and the discharge port 33 coincide with each other. Figure 3 As shown, the seal 4 can move in the vertical direction by rotating forward under the action of the operating handle 42. When the discharge port 33 needs to be opened, the seal 4 can be moved downward and away from the discharge port 33; when the discharge port 33 needs to be closed, the seal 4 can be moved upward and the sealing protrusion 41 on the seal 4 is inserted into the discharge port 33 to achieve sealing. This up and down movement to achieve sealing avoids the situation in which abrasives may be blocked in the valve hole of conventional valves, and also does not affect the passage of airflow.

[0037] In this example, the flow direction of the air flow supplied by the air source connecting piece 2 is perpendicular to the falling direction of the abrasive supplied by the abrasive supply mechanism 3 .

[0038] In this example, the cleaning device also includes a gas-solid cleaning material mixing output pipe 5, one end of the gas-solid cleaning material mixing output pipe 5 is connected to the cavity 11, and the other end is connected to the pipe 8 to be cleaned. The side of the cavity 11 connected to the gas-solid cleaning material mixing output pipe 5 is opposite to the side of the cavity 11 connected to the air source connecting piece 2. The setting of the gas-solid cleaning material mixing output pipe 5 can achieve the purpose of not disassembling the pipe to be cleaned (it can also be disassembled for cleaning), that is, only one end or both ends of the pipe to be cleaned need to be disconnected from other pipes without disassembling it.

[0039] Furthermore, the cleaning device also includes an abrasive funnel 6 and a valve 7. The abrasive funnel 6 is connected to the abrasive buffer bin 31. The valve 7 is arranged between the abrasive funnel 6 and the abrasive buffer bin 31. The abrasive funnel 6 can achieve better addition of abrasive, and the valve 7 can close the connection between the abrasive buffer bin 31 and the outside world during cleaning.

[0040] In this example, when it is necessary to clean the inside of the pipeline, open the valve 7, add the abrasive to the abrasive buffer bin 31 through the abrasive funnel 6, and after the addition is completed, close the valve 7, and then introduce compressed air through the air source connecting piece 2 (the air source connecting piece 2 can also have an on-off valve to achieve closing and conduction), and then open the discharge port 33 by opening the operating handle 42, and the abrasive can fall and be brought into the pipeline 8 to be cleaned by the compressed air to achieve cleaning. Further, in this example, a perspective mirror 12 is also provided on the connecting seat 1, through which the falling of the abrasive in the connecting seat 1 can be observed.

[0041] Furthermore, if Figure 1 As shown, in the pipeline internal cleaning device of this example, the abrasive funnel 6, the valve 7, the abrasive buffer bin 31, the abrasive introduction pipe 32, the connecting seat 1, and the operating handle 42 are arranged in sequence from top to bottom.

[0042] In summary, the present invention achieves the mixing of abrasives in airflow, especially in gas with relatively high pressure such as compressed air, through the cooperation of a specific abrasive supply mechanism 3, a connecting seat 1 and a sealing member 4, thereby achieving the cleaning of the inside of the pipeline by airflow and abrasives, and the abrasives can be evenly distributed in the airflow, so that the inside of the pipeline can be cleaned and impurities removed in the circumferential direction without dead angles, and the removed impurities can be taken away with the airflow; at the same time, the cleaning device of the present invention can also close the abrasive discharge port at any time during the cleaning process, and the problem of abrasives blocking the discharge port will not occur, thereby achieving easy switching.

[0043] The above embodiments are only for illustrating the technical concept and features of the present invention, and their purpose is to enable people familiar with the technology to understand the content of the present invention and implement it accordingly, and they cannot be used to limit the protection scope of the present invention. Any equivalent changes or modifications made according to the spirit of the present invention should be included in the protection scope of the present invention.

Claims

1. A pipeline internal cleaning device, characterized in that: The cleaning device comprises: A connecting seat having a cavity; An air source connecting piece, the air source connecting piece is connected with the cavity; an abrasive supply mechanism, the abrasive supply mechanism comprising an abrasive buffering bin for buffering abrasives, an abrasive introduction pipe partially or completely extending into the cavity at the lower part and communicating with the abrasive buffering bin at the upper part, a portion of the abrasive introduction pipe extending into the cavity is formed with a discharge port, and a gap is formed between the portion and the inner wall of the cavity, the portion of the abrasive introduction pipe extending into the cavity is wide at the upper part and narrow at the lower part, the discharge port is located in the middle part of the cavity, and the caliber of the discharge port is 0.05-0.3 times the width of the cavity on the same horizontal line as the discharge port; A sealing member is arranged to be movable in the up-down direction relative to the discharge port, and a sealing protrusion is formed at one end of the sealing member to cooperate with the discharge port to realize the opening and closing of the discharge port.

2. The pipeline internal cleaning device according to claim 1, characterized in that: When the discharge port is in an open state, the sealing member is away from the discharge port; when the discharge port is in a closed state, the sealing protrusion of the sealing member is inserted into the discharge port.

3. The pipeline internal cleaning device according to claim 1, characterized in that: The center lines of the sealing member, the abrasive introduction tube, and the discharge port extend in the vertical direction respectively; and / or the center lines of the sealing member, the abrasive introduction tube, and the discharge port coincide with each other.

4. The pipeline internal cleaning device according to claim 1, characterized in that: The flow direction of the air flow supplied by the air source connecting piece is perpendicular to the falling direction of the abrasive supplied by the abrasive supply mechanism.

5. The pipeline internal cleaning device according to claim 1, characterized in that: The abrasive supplied by the abrasive supply mechanism has at least two particle sizes.

6. The pipeline internal cleaning device according to claim 1, characterized in that: The cleaning device also includes a gas-solid cleaning material mixing output pipe, one end of the gas-solid cleaning material mixing output pipe is connected to the cavity, and the other end is connected to the pipeline to be cleaned, and the side of the cavity connected to the gas-solid cleaning material mixing output pipe is opposite to the side of the cavity connected to the air source connecting piece.

7. The pipeline internal cleaning device according to claim 1, characterized in that: The cleaning device further comprises an abrasive hopper and a valve. The abrasive hopper is communicated with the abrasive buffer bin, and the valve is arranged between the abrasive hopper and the abrasive buffer bin.

Images