Thread cleaning device

Abstract

The utility model relates to a thread cleaning device which comprises a base body, the base body is provided with a circumferential surface, the circumferential surface is provided with a cleaning and scraping thread matched with a cleaned thread, the circumferential surface of the base body is provided with an axial through chip groove, and an included angle between one side wall of the chip groove and the cleaning and scraping thread is an acute angle to form a scraping edge. When the base body is screwed in towards the cleaned thread, the scraping blade scrapes sundries in a thread groove of the cleaned thread out. According to the thread cleaning device, the cleaning and scraping threads matched with the cleaned threads are arranged on the circumferential surface of the base body, and the cleaned threads can be internal threads or external threads, so that the application range is wide; on the basis, an acute-angle scraping blade is formed between the side wall of the chip groove and the cleaning and scraping thread, when the base body is screwed towards the cleaned thread in the using process, the acute-angle scraping blade penetrates into a thread groove of the cleaned thread to scrape out solidified remaining paint, operation is convenient, and labor is saved.

Description

Technical Field

[0001] The utility model relates to the technical field of cleaning devices, in particular to a thread cleaning device. Background Art

[0002] Submersible motors have high lift, large displacement, and fast production. They are widely used mechanical oil production equipment in oil field development. During the manufacturing process of submersible motors, the stator part is dipped in paint to fix the winding and increase the insulation of the winding. After the dip in paint is completed, paint will remain on the stator housing thread. When assembling the motor unit, the motor head and the motor housing need to be connected by threaded connection. At this time, the paint glue on the stator housing thread needs to be removed before the motor head can be installed. There are two existing cleaning methods: one is to clean the thread manually using a machine clamp knife, and the other is to install a wire brush on a small electric drill and use the electric drill to drive the wire brush to clean the thread. The machine clamp knife cleaning is more thorough but very laborious and slow, while the electric drill grinding method is labor-saving, fast but not thorough. These two cleaning methods cannot take into account the cleaning speed and cleaning quality in actual work.

[0003] For example, a gas pipeline thread cleaning tool disclosed in the Chinese utility model patent with authorization announcement number CN205887497U includes a cylindrical thread head, an outer thread matching the size of the thread in the gas pipeline on the circumferential surface of the thread head, and the thread head is a different-diameter cylinder with an isosceles trapezoidal longitudinal section, the front end face diameter is smaller than the rear end face diameter, a groove running through the length of the thread head is opened on the surface of the thread head, and the rear end of the thread head is fixedly connected to a connecting rod, and a rotating handle is provided on the connecting rod. The cleaning tool drives the connecting rod and the thread head to rotate by rotating the handle, and the thread head performs cleaning work by cooperating with the thread in the gas pipeline. However, since the thread head is a different-diameter cylinder with an isosceles trapezoidal longitudinal section and the front end face diameter is smaller than the rear end face diameter, it is more labor-saving at the beginning to clean, but it is no longer labor-saving when the thread head completely enters the interior of the thread. In addition, there are three grooves on the surface of the thread head of the cleaning tool that run through the length of the thread head, and the central angle of the groove is less than 180°. This design makes the sharp edge that matches the thread in the gas pipeline obtuse, and the paint solidified on the stator thread of the submersible motor is very hard, so it is very laborious to clean it using the above cleaning tool. Utility Model Content

[0004] The utility model aims to provide a thread cleaning device, which is used to solve the technical problem that the thread cleaning tools in the prior art are very laborious during cleaning.

[0005] To achieve the above object, the technical solution of a thread cleaning device provided by the present utility model is as follows: It includes a base body. The base body has a circumferential surface, and a scraping thread matching the thread to be cleaned is arranged on the circumferential surface. An axially penetrating chip discharge groove is opened on the circumferential surface of the base body. The included angle between one side wall of the chip discharge groove and the scraping thread is an acute angle to form a scraping edge. When the base body is screwed towards the thread to be cleaned, the scraping edge scrapes out the sundries in the thread groove of the thread to be cleaned.

[0006] Beneficial effects: The present utility model provides a brand-new thread cleaning device. By arranging a scraping thread matching the thread to be cleaned on the circumferential surface of the base body, the thread to be cleaned can be an internal thread or an external thread, and the application range is relatively wide. On this basis, an acute-angle scraping edge is formed between the side wall of the chip discharge groove and the scraping thread. When using, when the base body is screwed towards the thread to be cleaned, the acute-angle scraping edge penetrates into the thread groove of the thread to be cleaned to scrape out the solidified remaining paint, and the operation is convenient and labor-saving.

[0007] Further, the groove wall of the chip discharge groove is curved.

[0008] Further, the chip discharge groove is an arc-shaped groove, and the central angle corresponding to the arc-shaped groove is greater than 180°.

[0009] Further, the circumferential surface is a cylindrical surface.

[0010] Further, the base body is a disc-shaped base body, and the scraping thread is arranged on the outer circumferential surface of the disc-shaped base body.

[0011] Further, there are two or more chip discharge grooves, and they are evenly arranged along the circumferential direction of the disc-shaped base body.

[0012] Further, a rotating handle is provided in the middle of the disc-shaped base body. The rotating handle includes a force-transmitting rod extending axially and a force-applying rod extending radially and connected to the end of the force-transmitting rod.

[0013] Further, the force-applying rod is radially inserted through the end of the force-transmitting rod, and anti-disengagement structures are respectively provided at both ends.

[0014] Further, weight-reducing holes are also provided on the disc-shaped base body. Description of the Drawings

[0015] Figure 1 It is a schematic structural diagram of a thread cleaning device of the present utility model;

[0016] Figure 2 It is a bottom view of the disc-shaped base body in the cleaning device of the present utility model;

[0017] Figure 3 It is a cross-sectional view of the force-transmitting rod in the cleaning device of the present utility model;

[0018] Figure 4 Schematic diagram of the force - adding rod in the cleaning device of the present utility model.

[0019] In the figure: 1. Disc - shaped base; 11. Scraping thread; 12. Chip - discharging groove; 13. Weight - reducing hole; 14. Keyway; 15. Scraping edge; 2. Force - adding rod; 21. Rivet; 22. Rivet hole; 3. Force - transmitting rod; 31. Key; 32. Force - adding hole. Specific implementation mode

[0020] The features and performance of the present utility model will be further described in detail below in combination with embodiments.

[0021] When the thread cleaning device of the present utility model cleans dirt, especially when cleaning hard or difficult - to - clean dirt, it is time - consuming and laborious. By improving the scraping thread to make it have a sharper scraping edge, it can more conveniently cut into the thread groove of the thread to be cleaned, and then scrape out the sundries therein.

[0022] Therefore, the present utility model provides a brand - new thread cleaning device, including a base. The base has a circumferential surface, and a scraping thread 11 matching the thread to be cleaned is arranged on the circumferential surface. An axially - penetrating chip - discharging groove 12 is opened on the circumferential surface of the base. The included angle between one side wall of the chip - discharging groove 12 and the scraping thread 11 is an acute angle to form a scraping edge 15. When the base rotates towards the thread to be cleaned, the scraping edge 15 scrapes out the sundries in the thread groove of the thread to be cleaned. That is to say, the scraping edge 15 refers to the edge angle on the side of the advancing direction formed by the chip - discharging groove 12 and the scraping thread 11 when the base rotates towards the thread to be cleaned. By arranging the scraping thread 11 matching the thread to be cleaned on the circumferential surface of the base, the thread to be cleaned can be an internal thread or an external thread, and the application range is relatively wide. On this basis, by forming an acute - angle scraping edge 15 between the side wall of the chip - discharging groove 12 and the scraping thread 11, when the base rotates towards the thread to be cleaned during use, the acute - angle scraping edge 15 penetrates into the thread groove of the thread to be cleaned to scrape out the solidified paint residue, and the operation is convenient and labor - saving.

[0023] Based on the above concept, different embodiments are provided below for illustration.

[0024] In one embodiment, the groove wall of the chip - discharging groove 12 is not curved, such as rectangular or conical. When collecting the cleaned paint glue from the rectangular groove or conical groove after cleaning, since there are more edges and corners on the rectangular groove or conical groove, it is not easy to collect. For this reason, the present application provides a more optimal embodiment, and the groove wall of the chip - discharging groove 12 is curved. Designing the groove wall of the chip - discharging groove 12 to be curved is beneficial to the smooth sliding of dirt out of the thread groove and facilitates chip discharging.

[0025] The present application provides a more optimal embodiment, such as Figure 2As shown, the chip removal groove is an arc groove, and the central angle of the arc groove is greater than 180°. The central angle of the arc groove is designed to be greater than 180°, so that the two side walls of the arc groove and the cleaning thread 11 can form a scraping edge 15, and when cleaning the thread, the debris in the thread groove of the cleaned thread can be scraped out in forward or reverse rotation, thereby improving the cleaning efficiency.

[0026] In one embodiment, the circumferential surface is designed as a different-diameter cylinder with an isosceles trapezoidal longitudinal section, and the front end face diameter is smaller than the rear end face diameter. When cleaning is just started, the front end face diameter is small and it is easy to screw into the cleaned thread, which is relatively labor-saving. When the rear end face is gradually and completely screwed into the thread groove of the cleaned thread, it is no longer labor-saving. For this purpose, the present application provides a more optimal embodiment, such as Figure 1 and Figure 2 As shown, the circumferential surface is a cylindrical surface. The base of the thread cleaning device of the present application adopts a cylindrical surface, and the scraping blade 15 can be deeply inserted into the root of the cleaned thread at the beginning of cleaning, that is to say, the cleaning depth of the cylindrical base is the depth of the cleaned thread; while the cleaning depth of the different-diameter cylinder with an isosceles trapezoidal longitudinal section for cleaning in the prior art is the sum of the depth of the cleaned thread and the height of the different-diameter cylinder, that is, the present application only needs to overlap the front end of the base with the end of the cleaned thread during cleaning, while the prior art must overlap the rear end of the base with the end of the cleaned thread to achieve complete cleaning. Therefore, compared with the prior art, the thread cleaning device to be protected by the present application improves the cleaning efficiency.

[0027] Based on the above embodiments, the cylindrical surface can be an outer cylindrical surface or an inner cylindrical surface. When a cleaning thread 11 matching the cleaned thread is set on the outer cylindrical surface, the inner thread can be cleaned. When a cleaning thread 11 matching the cleaned thread is set on the inner cylindrical surface, the outer thread can be cleaned. The present application actually needs to clean the inner thread. For this purpose, the present application provides a better embodiment, such as Figure 1 and Figure 2 As shown, the base is a disc-shaped base 1, and the scraping thread 11 is arranged on the outer circumferential surface of the disc-shaped base 1. By cooperating with the motor thread, the paint glue solidified on the motor housing thread can be cleaned out. In addition, when the thread to be cleaned is an external thread, the base can be designed as an annular base, and the scraping thread 11 is arranged on the inner circumferential surface of the annular base. When cleaning work is required, the cleaning thread 11 on the inner circumferential surface of the annular base cooperates with the external thread to be cleaned, so as to achieve the cleaning of the external thread.

[0028] In one embodiment, there is one chip removal groove 12. Acute-angle scraping edges 15 are formed between the two side walls of the chip removal groove 12 and the cleaning threads 11. When the disc-shaped base body 1 advances towards the threads to be cleaned, the scraping edges 15 scrape out the debris in the thread grooves of the threads to be cleaned. With such a structural design, it can also clean the solidified remaining paint during use. However, since the number of scraping edges 15 is too small and it can only scrape once in one rotation, the cleaning efficiency is greatly reduced. Therefore, the present application provides a more optimal embodiment, as Figure 2 shown, there are more than two chip removal grooves 12, and they are evenly arranged along the circumferential direction of the disc-shaped base body 1. By providing more than two chip removal grooves 12, there are also more than two scraping edges 15 formed by the chip removal grooves 12 and the cleaning threads 11, and they are evenly arranged on the disc-shaped base body 1. As the number of scraping edges 15 increases, the number of scrapings in one rotation of the base body also increases, thus achieving an improvement in cleaning efficiency.

[0029] Based on the above embodiments, the cleaning device of the present utility model can take into account both cleaning quality and cleaning efficiency during use, and solves the technical problem that it is very laborious to clean in actual engineering. The present application provides a more optimal embodiment, as Figures 1 - 3 shown, a rotating handle is provided in the middle of the disc-shaped base body 1. The rotating handle includes a force transmission rod 3 extending axially and a force applying rod 2 extending radially and connected to the end of the force transmission rod 3. By axially arranging the force applying rod 2 through the force transmission rod 3 at the center of the disc-shaped base body 1, when cleaning the remaining paint, the operator can hold the force applying rod 2, drive the transmission rod 3 by rotating the force applying rod 2, and the transmission rod 3 drives the disc-shaped base body 1 to rotate for cleaning the paint glue more labor-saving and easily. Further, the axially extending force transmission rod 3 is a split structure arranged in a perforation on the disc-shaped base body 1, or the axially extending force transmission rod 3 is an integral structure welded or integrally formed with the disc-shaped base body 1. Specifically, the split structure is provided with a keyway 14 in the perforation, and a key 31 is provided at the end of the force transmission rod 3. The disc-shaped base body 1 and the force transmission rod 3 are key-connected. Designing it as a split structure facilitates disassembly, replacement, and maintenance.

[0030] During long-term use, it may be possible for the force applying rod 2 to fall off from the force applying hole 32 due to wear or improper force application, thus causing a safety accident. Therefore, the present application provides a more optimal embodiment, as Figure 4 shown, the force applying rod 2 is radially installed at the end of the force transmission rod 3 and anti-disengagement structures are respectively provided at both ends. The anti-disengagement structure can be a rivet 21. By providing the rivet 21 in the rivet hole 22 on the force applying rod 1, both ends of the rivet 21 protrude from the outer peripheral surface of the force applying rod 2 and can block against the edge of the force applying hole 23, which can effectively prevent the force applying rod 2 from falling out of the force applying hole 23. By designing the rivet to prevent accidents, the safety of the cleaning structure of the present application is improved.

[0031] A thread cleaning device of the present utility model is made of metal materials. When in use, in addition to taking into account the cleaning quality and cleaning efficiency, it should also be designed to be more lightweight. For this purpose, the present application provides a better embodiment, as Figure 2 shown, a weight-reducing hole 13 is further provided on the disc-shaped base body 1. By providing a plurality of weight-reducing holes 13 on the disc-shaped base body 1, the overall weight of the cleaning device of the present application can be effectively reduced, making the cleaning device of the present application more lightweight and convenient during use, which is beneficial for workers to continuously work during construction and also improves work efficiency.

[0032] The above is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. The patent protection scope of the present utility model is subject to the claims. All equivalent structural changes made by using the description and drawings of the present utility model should, by the same token, be included in the protection scope of the present utility model.

Claims

1. A thread cleaning device, characterized in that: It includes a base body, which has a circumferential surface, on which a cleaning thread matching the thread to be cleaned is arranged, and an axially penetrating chip groove is opened on the circumferential surface of the base body, and the angle between a side wall of the chip groove and the cleaning thread is an acute angle to form a scraping edge, and when the base body is screwed toward the thread to be cleaned, the scraping edge will scrape out debris in the thread groove of the cleaning thread.

2. The thread cleaning device according to claim 1, characterized in that: The flute wall of the chip removal flute is in a curved shape.

3. The thread cleaning device according to claim 2, characterized in that: The chip removal groove is an arc groove, and the central angle corresponding to the arc groove is greater than 180°.

4. The thread cleaning device according to any one of claims 1 to 3, characterized in that: The circumferential surface is a cylindrical surface.

5. The thread cleaning device according to any one of claims 1 to 3, characterized in that: The base body is a disc-shaped base body, and the scraping threads are arranged on the outer peripheral surface of the disc-shaped base body.

6. The thread cleaning device according to claim 5, characterized in that: There are more than two chip removal grooves, which are evenly arranged along the circumference of the disc-shaped base.

7. The thread cleaning device according to claim 5, characterized in that: A rotating handle is provided in the middle of the disc-shaped base, and the rotating handle comprises an axially extending force transmission rod and a radially extending force adding rod connected to the end of the force transmission rod.

8. The thread cleaning device according to claim 7, characterized in that: The force adding rod is radially installed on the end of the force transmitting rod and anti-slip structures are respectively provided at both ends.

9. The thread cleaning device according to claim 5, characterized in that: The disc-shaped base is also provided with weight-reducing holes.

Images