Dredging tool

Abstract

The utility model relates to the technical field of separator cleaning, in particular to a dredging tool. The desilting tool comprises a base, a holding rod and a cleaning plate. The base is provided with a first side wall and a second side wall which are opposite, and the first side wall is provided with a groove. The holding rod is arranged on the base, and the axial direction of the holding rod is parallel to the first side wall. The cleaning plate comprises a mounting part and a cleaning part which are connected, the mounting part is arranged in the groove, the cleaning part protrudes out of the first side wall in the groove depth direction of the groove, the cleaning part is provided with a third side wall, the third side wall is located on the side, away from the mounting part, of the cleaning part, and the third side wall can be attached to the inner wall of the barrel; the distance between the third side wall and the second side wall is smaller than the distance between the inner wall of the barrel and the filter element. The dredging tool is more convenient for workers to operate, the difficulty of cleaning the inner wall of the barrel can be reduced, and the cleaning efficiency is improved.

Description

Technical Field

[0001] The present application relates to the technical field of separator cleaning, and in particular to a dredging tool. Background Art

[0002] The filter separator is one of the important equipment in the natural gas processing process system. A filter element is set at the center of the cylinder of the filter separator to achieve fine filtration and separation of natural gas. During the process of filtering natural gas, some impurities such as tiny solid particles may remain on the inner wall of the cylinder, so it is necessary to clean the inner wall of the cylinder of the filter separator.

[0003] In the prior art, when cleaning impurities remaining on the inner wall of the cylinder of the filter separator, the cleaning staff usually holds a broom and extends the cleaning end of the broom into the gap and slides on the inner wall of the cylinder to achieve the purpose of cleaning the impurities on the inner wall of the cylinder. However, since the gap between the inner wall of the cylinder of the filter separator and the filter element is small, the broom cannot completely clean the inner wall of the cylinder of the filter separator, and the deposited impurities at the lower part of the inner wall of the cylinder are particularly difficult to clean, and the cleaning efficiency is low. Utility Model Content

[0004] The application discloses a dredging tool, which can extend into the gap between the inner wall of a cylinder and a filter element of a filter separator and clean the impurities remaining on the inner wall of the cylinder.

[0005] In order to achieve the above objectives, the present application discloses a dredging tool, comprising:

[0006] A base, the base having a first side wall and a second side wall opposite to each other, the first side wall being provided with a groove;

[0007] A holding rod, the holding rod being disposed on the base and extending along an axial direction of the holding rod; and

[0008] A cleaning plate, wherein the cleaning plate comprises a mounting portion and a cleaning portion connected to each other, wherein the mounting portion is arranged in the groove, and the cleaning portion protrudes from the first side wall along the groove depth direction of the groove, and the cleaning portion has a third side wall, and the third side wall is located on the side of the cleaning portion away from the mounting portion, and the third side wall can be fitted with the inner wall of the cylinder, and the distance between the third side wall and the second side wall is smaller than the distance between the inner wall of the cylinder and the filter element.

[0009] Optionally, the cleaning portion further has a first surface and a second surface opposite to each other, the third side wall is connected between the first surface and the second surface, the holding rod is located on the side of the first surface away from the second surface, the third side wall is a convex arc surface, and the distance between the edge of the third side wall connected to the first surface and the first side wall is smaller than the distance between the edge of the third side wall connected to the second surface and the first side wall.

[0010] Optionally, the cleaning portion extends along a first rotation direction, and the cleaning portion has a first end surface and a second end surface at two ends in the first rotation direction, respectively, and an angle between the first end surface and the second end surface is equal to or greater than 120°.

[0011] Optionally, an included angle between the first end surface and the second end surface is 180°, and the first end surface and the second end surface are coplanar.

[0012] Optionally, the base extends along the first rotation direction, and the base has a third end face and a fourth end face at both ends in the first rotation direction, respectively, the third end face and the fourth end face are both connected between the first side wall and the second side wall, the third end face is coplanar with the first end face, and the fourth end face is coplanar with the second end face.

[0013] Optionally, a connecting piece is further included, and the mounting portion is connected to the groove through the connecting piece.

[0014] Optionally, a first through hole is provided at the edge of the base adjacent to the first side wall, the first through hole passes through the base along the axial direction of the holding rod and is connected with the groove; the mounting portion is provided with a second through hole, the second through hole is coaxial with the first through hole, and the connecting piece is passed through the first through hole and the second through hole so that the mounting portion can be detachably connected to the groove.

[0015] Optionally, the first through hole and the second through hole are both provided with internal threads, the connecting piece is provided with external threads, and the connecting piece is threadably matched with the first through hole and the second through hole.

[0016] Optionally, the base comprises:

[0017] a base portion, wherein the first side wall and the second side wall are both located on the base portion; and

[0018] A raised portion, wherein the raised portion is arranged on the second side wall, and the raised portion protrudes from the second side wall in a direction away from the first side wall, the raised portion has a fourth side wall opposite to the first side wall, the fourth side wall is connected to the second side wall, the distance between the third side wall and the fourth side wall is smaller than the distance between the inner wall of the cylinder and the filter element, and the holding rod is arranged on the raised portion.

[0019] Optionally, the distance between the holding rod and the first side wall is equal to the distance between the holding rod and the fourth side wall.

[0020] Compared with the prior art, the dredging tool provided by the present application has at least the following beneficial effects:

[0021] The dredging tool of the present application has a smaller spacing between the third side wall of the cleaning plate and the second side wall of the base than the spacing between the inner wall of the cylinder and the filter element, so that the cleaning plate and the base can extend into the gap between the inner wall of the cylinder and the filter element, so that the edge of the third side wall of the cleaning plate can scrape off impurities on the inner wall of the cylinder. Compared with the prior art of using a broom to clean impurities on the inner wall of the cylinder of the filter separator, the dredging tool of the present application is more convenient for staff to operate, and can reduce the difficulty of cleaning the inner wall of the cylinder and improve the cleaning efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

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

[0023] The present application will be described in more detail below based on embodiments and with reference to the accompanying drawings, wherein:

[0024] Figure 1 is a schematic structural diagram of a dredging tool provided in an embodiment of the present application at a first viewing angle;

[0025] Figure 2 is a schematic diagram of a partial structure of a base provided by an embodiment of the present application at a second viewing angle;

[0026] Figure 3 is a schematic diagram of the partial structure of the dredging tool provided in an embodiment of the present application at a second viewing angle;

[0027] Figure 4 It is a schematic structural diagram of the dredging tool provided in an embodiment of the present application at a second viewing angle.

[0028] In the drawings, like reference numerals are used for like parts. The drawings are not necessarily to scale.

[0029] Reference numerals:

[0030] 1-Dredging tools;

[0031] 11-base; 111-first side wall; 112-second side wall; 113-groove; 114-third end surface; 115-fourth end surface; 116-first through hole; 117-base portion; 118-protrusion; 119-fourth side wall;

[0032] 12-Hold the bar;

[0033] 13-cleaning plate; 131-mounting portion; 132-cleaning portion; 1321-third side wall; 1322-first surface; 1323-second surface; 1324-first end surface; 1325-second end surface;

[0034] 14-Connectors. DETAILED DESCRIPTION

[0035] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions 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 this field without creative work are within the scope of protection of this application.

[0036] In this application, the terms "installed", "set", "provided with", "connected", and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral structure; it can be a mechanical connection, or an electrical connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be an internal connection between two devices, elements, or components. For those of ordinary skill in the art, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0037] In addition, the terms "first", "second", etc. are mainly used to distinguish different devices, elements or components (the specific types and structures may be the same or different), and are not used to indicate or imply the relative importance and quantity of the indicated devices, elements or components. Unless otherwise specified, "plurality" means two or more.

[0038] The technical solution of the present application will be further described below in conjunction with specific embodiments and drawings.

[0039] Please also read Figure 1 , Figure 2 and Figure 3The embodiment of the present application provides a dredging tool 1, comprising a base 11, a gripping rod 12 and a cleaning plate 13. The base 11 has a first side wall 111 and a second side wall 112 opposite to each other, and the first side wall 111 is provided with a groove 113. The gripping rod 12 is arranged on the base 11. The cleaning plate 13 includes a connected mounting portion 131 and a cleaning portion 132, the mounting portion 131 is arranged in the groove 113, the cleaning portion 132 protrudes from the first side wall 111, and the cleaning portion 132 has a third side wall 1321 extending in the same direction as the second side wall 112, the third side wall 1321 is located on the side of the cleaning portion 132 away from the mounting portion 131, and can be fitted with the inner wall of the cylinder, and the farthest distance between the third side wall 1321 and the second side wall 112 is less than the distance between the inner wall of the cylinder and the filter element.

[0040] The axial direction of the gripping rod 12 may be parallel to the first side wall 111 .

[0041] The base 11 can be made of aluminum alloy to reduce the weight of the base 11 and facilitate the operation of the staff. Of course, the base 11 can also be made of other lightweight materials, which is not limited here.

[0042] In addition, the orientation of the third side wall 1321 may be the same as that of the first side wall 111 , or may be inclined relative to the orientation of the first side wall 111 , which is not limited herein.

[0043] In this embodiment, the dredging tool 1 is adapted to a filter separator, wherein the filter separator comprises a cylinder and a filter element, and the filter element is arranged in the middle position of the cylinder, and a gap is formed between the filter element and the inner wall of the cylinder.

[0044] The working principle of the dredging tool 1 for cleaning the inner wall of the cylinder of the filter separator is that the staff holds the holding rod 12 and adjusts the position of the holding rod 12 so that the axial direction of the holding rod 12 is parallel to the depth direction of the cylinder of the filter separator, and at the same time, the axial projection of the base 11 and the cleaning plate 13 on the holding rod 12 is located in the gap.

[0045] After adjusting the position of the holding rod 12, the staff extends the dredging tool 1 into the gap along the axial direction of the holding rod 12. It should be noted that at this time, the distance between the third side wall 1321 and the second side wall 112 needs to be smaller than the distance between the inner wall of the cylinder and the filter element to ensure that the cleaning plate 13 and the base 11 will not interfere with the inner wall of the cylinder and the filter element during the process of extending into the gap.

[0046] After the cleaning plate 13 and the base 11 are inserted into the gap, the first side wall 111 faces the inner wall of the cylinder, the second side wall 112 faces the filter element, and the third side wall 1321 is adjacent to the inner wall of the cylinder. The staff moves the dredging tool 1 in a direction perpendicular to the axial direction of the gripping rod 12, so that the third side wall 1321 contacts the inner wall of the cylinder.

[0047] After the third side wall 1321 contacts the inner wall of the cylinder, the staff can reciprocate the dredging tool 1 along the axial direction of the holding rod 12 so that the edge of the third side wall 1321 scrapes off impurities on the inner wall of the cylinder, thereby achieving the purpose of dredging.

[0048] After the dredging is completed, the staff moves the dredging tool 1 along the axial direction of the holding rod 12 to make the dredging tool 1 leave the filter separator.

[0049] To sum up, since the distance between the third side wall 1321 of the cleaning plate 13 and the second side wall 112 of the base 11 is smaller than the distance between the inner wall of the cylinder and the filter element, the cleaning plate 13 and the base 11 can extend into the gap between the inner wall of the cylinder and the filter element, so that the edge of the third side wall 1321 of the cleaning plate 13 can scrape off impurities on the inner wall of the cylinder. Compared with the prior art of using a broom to sweep impurities on the inner wall of the cylinder of the filter separator, the dredging tool 1 provided in the embodiment of the present application is more convenient for the staff to operate, and can reduce the difficulty of cleaning the inner wall of the cylinder and improve the cleaning efficiency.

[0050] Please also read Figure 3 and Figure 4 In some embodiments, the cleaning portion 132 further has a first surface 1322 and a second surface 1323 opposite to each other, the third side wall 1321 is connected between the first surface 1322 and the second surface 1323, the holding rod 12 is located on the side of the first surface 1322 away from the second surface 1323, the third side wall 1321 is a convex arc surface, and the distance between the edge of the third side wall 1321 connected to the first surface 1322 and the first side wall 111 is smaller than the distance between the edge of the third side wall 1321 connected to the second surface 1323 and the first side wall 111.

[0051] In this embodiment, the third side wall 1321 is a convex arc surface, and the distance between the edge of the third side wall 1321 connecting to the first surface 1322 and the first side wall 111 is smaller than the distance between the edge of the third side wall 1321 connecting to the second surface 1323 and the first side wall 111, so that when the dredging tool 1 moves toward the opening direction of the cylinder, a line contact is formed between the third side wall 1321 and the inner wall of the cylinder, thereby reducing the friction loss to the inner wall of the cylinder.

[0052] In some other embodiments, the third side wall 1321 may also be oriented toward the same plane as the first side wall 111 .

[0053] See also Figure 1 In some embodiments, the cleaning portion 132 extends along the first rotation direction, and the cleaning portion 132 has a first end surface 1324 and a second end surface 1325 at two ends in the first rotation direction, respectively, and the angle between the first end surface 1324 and the second end surface 1325 is equal to or greater than 120°.

[0054] In some embodiments, the center line of the first rotation direction may be parallel to the axis of the gripping rod 12. Of course, in some other embodiments, the center line of the first rotation direction may also be inclined relative to the axis of the gripping rod 12, which is not limited here. However, it should be noted that if the center line of the first rotation direction may also be inclined relative to the axis of the gripping rod 12, the angle between the center line of the first rotation direction and the axis of the gripping rod 12 is less than 90° to meet the dredging requirements.

[0055] The cleaning portion 132 extends in the first rotation direction, and the angle between the first end face 1324 and the second end face 1325 at both ends of the cleaning portion 132 is equal to or greater than 120°, which can increase the contact range between the cleaning portion 132 and the inner wall of the cylinder, thereby improving the cleaning efficiency. For example, the angle between the first end face 1324 and the second end face 1325 at both ends of the cleaning portion 132 can be 120°, 240° or 360°. Of course, the angle between the first end face 1324 and the second end face 1325 at both ends of the cleaning portion 132 can also be any angle within the range of 120°-360° except 120°, 240° or 360°, which is not limited here.

[0056] For example, if the angle between the first end face 1324 and the second end face 1325 is 120°, the staff only needs to repeat the cleaning three times in the circumferential direction of the inner wall of the cylinder to complete the dredging work on the inner wall of the cylinder.

[0057] In some other embodiments, the angle between the first end surface 1324 and the second end surface 1325 may be less than 120°.

[0058] See also Figure 1 In some embodiments, the angle between the first end surface 1324 and the second end surface 1325 is 180°, and the first end surface 1324 and the second end surface 1325 are coplanar.

[0059] In this embodiment, the angle between the first end face 1324 and the second end face 1325 is 180°, and the first end face 1324 and the second end face 1325 are coplanar. The staff only needs to repeat the cleaning twice in the circumferential direction of the inner wall of the cylinder to complete the dredging work on the inner wall of the cylinder. At the same time, it can also prevent the weight of the cleaning plate 13 from being too heavy, making it convenient for the staff to hold the dredging tool 1 to dredge the inner wall of the cylinder of the filter separator.

[0060] In some other embodiments, the included angle between the first end surface 1324 and the second end surface 1325 may also be 360°, and the first end surface 1324 and the second end surface 1325 are opposite to each other.

[0061] Please continue reading Figure 1In some embodiments, the base 11 extends along the first rotation direction, and the base 11 has a third end face 114 and a fourth end face 115 at two ends in the first rotation direction, respectively. The third end face 114 and the fourth end face 115 are both connected between the first side wall 111 and the second side wall 112, and the third end face 114 is coplanar with the first end face 1324, and the fourth end face 115 is coplanar with the second end face 1325.

[0062] In this embodiment, the base 11 extends along the first rotation direction, and the third end face 114 is coplanar with the first end face 1324, and the fourth end face 115 is coplanar with the second end face 1325. The area of ​​the first side wall 111 can be increased along the first rotation direction, so that the base 11 can fully support the cleaning plate 13, thereby improving the stability of the cleaning plate 13.

[0063] In addition, the groove 113 may also extend along the first rotation direction and may penetrate the third end surface 114 and the fourth end surface 115 .

[0064] In some embodiments, the distance between the third end surface 114 and the fourth end surface 115 in the first rotation direction may also be greater than the distance between the first end surface 1324 and the second end surface 1325 in the first rotation direction.

[0065] Please also refer to Figure 2 , Figure 3 and Figure 4 In some embodiments, the dredging tool 1 further includes a connecting piece 14 , and the mounting portion 131 is connected to the groove 113 via the connecting piece 14 .

[0066] The installation portion 131 is connected to the groove 113 by the connecting member 14 , so that the stability of the installation portion 131 installed in the groove 113 can be enhanced.

[0067] In some other embodiments, the mounting portion 131 may also be snap-fitted into the groove 113 .

[0068] See also Figure 1 and Figure 3 In some embodiments, a first through hole 116 is provided at an edge of the base 11 adjacent to the first side wall 111. The first through hole 116 penetrates the base 11 along the axial direction of the gripping rod 12 and is connected to the groove 113. The mounting portion 131 is provided with a second through hole (not shown in the figure), which is coaxial with the first through hole 116. The connecting member 14 is passed through the first through hole 116 and the second through hole so that the mounting portion 131 can be detachably connected to the groove 113.

[0069] In this embodiment, the first through hole 116 penetrates the base 11 along the axial direction of the gripping rod 12 , which means that the first through hole 116 penetrates two opposite outer surfaces of the base 11 along the axial direction of the gripping rod 12 .

[0070] The connecting member 14 is inserted through the first through hole 116 and the second through hole, and can limit the radial movement of the cleaning member relative to the base 11 along the first through hole 116 , thereby improving the stability of the cleaning plate 13 installed on the base 11 .

[0071] In addition, the mounting portion 131 is detachably connected to the groove 113 via the connecting member 14, so that the cleaning plate 13 can be easily replaced during maintenance, thus saving maintenance time and maintenance costs.

[0072] In some other embodiments, one end of the first through hole 116 may only penetrate one of the outer surfaces of the base 11 along the axial direction of the gripping rod 12 , and the other end thereof may penetrate the side wall of the groove 113 .

[0073] In some more specific embodiments, the first through hole 116 and the second through hole are both provided with internal threads, the connecting member 14 is provided with external threads, and the connecting member 14 is threadedly matched with the first through hole 116 and the second through hole.

[0074] The connecting member 14 may be a bolt or a screw, etc., which is not limited here.

[0075] The connecting piece 14 is threadedly matched with the first through hole 116 and the second through hole. In addition to limiting the relative movement of the cleaning plate 13 and the base 11 in the first rotational direction, the connecting piece 14 can also limit the relative movement of the cleaning plate 13 and the base 11 in the axial direction of the first through hole 116, thereby ensuring the stable position of the mounting portion 131 in the groove 113, preventing the cleaning plate 13 from loosening due to force, and ensuring the stability and reliability of the dredging tool 1 during use.

[0076] In addition, the thread can withstand greater tensile and shear forces, ensuring that the connector 14 can withstand various complex working environments and working loads during the use of the dredging tool 1.

[0077] In some other more specific implementations, the first through hole 116 may also be a light hole.

[0078] Please refer again Figure 1 In some embodiments, the base 11 includes a base portion 117 and a protrusion 118, the first side wall 111 and the second side wall 112 are both located on the base portion 117, the protrusion 118 is arranged on the second side wall 112, and the protrusion 118 protrudes from the second side wall 112 in a direction away from the first side wall 111, the protrusion 118 has a fourth side wall 119 opposite to the first side wall 111, the fourth side wall 119 is connected to the second side wall 112, the distance between the third side wall 1321 and the fourth side wall 119 is smaller than the distance between the inner wall of the cylinder and the filter element, and the holding rod 12 is arranged on the protrusion 118.

[0079] It is understandable that in the direction perpendicular to the axis of the gripping rod 12, the bottom wall of the groove 113 is located between the first side wall 111 and the second side wall 112. Therefore, if the gripping rod 12 is installed on the base 11 close to the first side wall 111, the material between the bottom wall of the groove 113 and the inner wall of the hole for installing the gripping rod 12 may be too thin, which may easily cause material damage or cracking. In order to solve this problem, the present embodiment sets the gripping rod 12 on the protrusion 118, which can increase the distance between the inner wall of the hole for installing the gripping rod 12 and the bottom wall of the groove 113 in the direction perpendicular to the axial direction of the gripping rod 12, so as to prevent the inner wall of the hole for installing the gripping rod 12 and the bottom wall of the groove 113 from being too close and causing material damage or cracking.

[0080] Of course, in order to ensure that the cleaning plate 13 and the base 11 can extend into the gap between the inner wall of the cylinder and the filter element, it is necessary to ensure that the distance between the third side wall 1321 and the fourth side wall 119 is smaller than the distance between the inner wall of the cylinder and the filter element.

[0081] In some other embodiments, the holding rod 12 can be arranged at the edge where the protrusion 118 and the base 117 are connected. That is, the position where the holding rod 12 is installed on the base 11 can be partially located on the protrusion 118 and the other part on the base 117.

[0082] In some embodiments, the distance between the grip bar 12 and the first side wall 111 is equal to the distance between the grip bar 12 and the fourth side wall 119 .

[0083] The distance between the gripping rod 12 and the first side wall 111 is equal to the distance between the gripping rod 12 and the fourth side wall 119, which can prevent the distance between the inner wall of the hole for installing the gripping rod 12 and the fourth side wall 119 from being smaller, thereby avoiding material damage or cracking between the inner wall of the hole for installing the gripping rod 12 and the fourth side wall 119.

[0084] In some other embodiments, the distance between the gripping rod 12 and the first side wall 111 minus the distance between the first side wall 111 and the bottom wall of the groove 113 is equal to the distance between the gripping rod 12 and the fourth side wall 119 .

[0085] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit it. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A dredging tool for cleaning the inner wall of a cylinder of a filter separator provided with a filter element, characterized in that: include: A base, the base having a first side wall and a second side wall opposite to each other, the first side wall being provided with a groove; A gripping rod, the gripping rod being arranged on the base; as well as A cleaning plate, wherein the cleaning plate comprises a mounting portion and a cleaning portion connected to each other, the mounting portion being arranged in the groove, the cleaning portion protruding from the first side wall, the cleaning portion having a third side wall extending in the same direction as the second side wall, the third side wall being located on a side of the cleaning portion away from the mounting portion, and being capable of fitting with an inner wall of the cylinder, and the farthest distance between the third side wall and the second side wall being smaller than a distance between the inner wall of the cylinder and the filter element.

2. The dredging tool according to claim 1, characterized in that: The cleaning part also has a first surface and a second surface opposite to each other, the holding rod is located on the side of the first surface away from the second surface, the third side wall is connected between the first surface and the second surface, the third side wall is a convex arc surface, and the distance between the edge of the third side wall connected to the first surface and the first side wall is smaller than the distance between the edge of the third side wall connected to the second surface and the first side wall.

3. The dredging tool according to claim 1, characterized in that: The cleaning portion extends along a first rotation direction, and the cleaning portion has a first end surface and a second end surface at two ends in the first rotation direction, respectively, and an angle between the first end surface and the second end surface is equal to or greater than 120°.

4. The dredging tool according to claim 3, characterized in that: The included angle between the first end surface and the second end surface is 180°, and the first end surface and the second end surface are coplanar.

5. The dredging tool according to claim 3, characterized in that: The base extends along the first rotation direction, and has a third end face and a fourth end face at both ends of the base in the first rotation direction, respectively. The third end face and the fourth end face are both connected between the first side wall and the second side wall. The third end face is coplanar with the first end face, and the fourth end face is coplanar with the second end face.

6. The dredging tool according to any one of claims 1 to 5, characterized in that: It also includes a connecting piece, and the mounting portion is connected to the groove through the connecting piece.

7. The dredging tool according to claim 6, characterized in that: A first through hole is provided at the edge of the base adjacent to the first side wall, and the first through hole passes through the base along the axial direction of the holding rod and is connected with the groove; the mounting portion is provided with a second through hole, and the second through hole is coaxial with the first through hole, and the connecting piece is passed through the first through hole and the second through hole so that the mounting portion can be detachably connected to the groove.

8. The dredging tool according to claim 7, characterized in that: The first through hole and the second through hole are both provided with internal threads, the connecting piece is provided with external threads, and the connecting piece is threadedly matched with the first through hole and the second through hole.

9. The dredging tool according to any one of claims 1 to 5, characterized in that: The base comprises: a base portion, wherein the first side wall and the second side wall are both located on the base portion; and A raised portion, wherein the raised portion is arranged on the second side wall, and the raised portion protrudes from the second side wall in a direction away from the first side wall, the raised portion has a fourth side wall opposite to the first side wall, the fourth side wall is connected to the second side wall, the distance between the third side wall and the fourth side wall is smaller than the distance between the inner wall of the cylinder and the filter element, and the holding rod is arranged on the raised portion.

10. The dredging tool according to claim 9, characterized in that: The distance between the holding rod and the first side wall is equal to the distance between the holding rod and the fourth side wall.

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