Cleaning suction head for hole

Abstract

The utility model belongs to the field of suction nozzles, and particularly relates to a cleaning suction head for holes. The cleaning suction head for the hole comprises a connector section and a stretching-in section used for stretching into a through hole to be cleaned, the cross section area of the stretching-in section is smaller than that of the connector section, the stretching-in section and the connector section are provided with communicated hollow inner cavities, and the end, away from the stretching-in section, of the connector section is open and used for being connected with a connector of a dust collector. The end, away from the connector section, of the stretching-in section is of a closed structure, and a suction opening which extends in the length direction of the stretching-in section and communicates with the hollow inner cavity of the stretching-in section is formed in the side wall of the stretching-in section. During use, the extending section can extend into a to-be-cleaned through hole, and foreign matters on the inner wall of the to-be-cleaned through hole can be sucked away by suction force at the suction port, so that cleaning is completed.

Description

Technical Field

[0001] The utility model relates to a cleaning suction head for holes, belonging to the field of suction nozzles. Background Art

[0002] In the high-voltage electrical equipment assembly industry, foreign matter such as metal particles, dust, and oil stains may be generated or mixed in during the assembly process of various parts. These foreign matter are very likely to be mixed into the arc extinguishing chamber, causing the high-voltage electrical equipment to discharge and affecting the normal operation of the equipment. Therefore, timely cleanliness management is required. However, for foreign matter in the flange through-hole and the gap between the two flange joints during the assembly process, when using a vacuum cleaner to clean the foreign matter attached to and remaining on the inner wall of the flange through-hole, the existing vacuum cleaner's vacuum tube or nozzle is too large to be inserted into the flange hole. It can only be cleaned along one side of the flange hole, and the foreign matter on the inner wall of the flange hole cannot be effectively cleaned, resulting in inadequate cleaning. Similarly, other mechanical parts are usually processed with through-holes of a certain length and a small aperture, such as through-holes for installing fasteners. During the production or assembly process, foreign matter will remain or be attached to the inner surface of these through-holes and need to be cleaned. Therefore, they also face the problem of not being able to clean properly due to the large size of the vacuum cleaner's vacuum tube or nozzle. Utility Model Content

[0003] The purpose of the utility model is to provide a hole cleaning nozzle to solve the problem that the existing cleaning nozzle cannot be inserted into the through hole, resulting in inability to effectively clean foreign matter on the inner wall of the hole.

[0004] To achieve the above purpose, the hole cleaning nozzle in the present invention adopts the following technical solutions:

[0005] A hole cleaning suction head comprises a joint section and an insertion section for inserting into a through hole to be cleaned, wherein the cross-sectional area of ​​the insertion section is smaller than the cross-sectional area of ​​the joint section, the insertion section and the joint section have a connected hollow inner cavity, the end of the joint section away from the insertion section is open for connection to the interface of a vacuum cleaner, the end of the insertion section away from the joint section is a closed structure, and a suction port is provided on the side wall of the insertion section, extending along the length direction of the insertion section and connected to the hollow inner cavity of the insertion section.

[0006] The beneficial effect of the above technical solution is that: the utility model is a pioneering invention. The hole cleaning nozzle includes an insertion section having a hollow inner cavity and interconnected with each other and a joint section for inserting into the through hole to be cleaned. The end of the joint section away from the insertion section is open, and the open end is used to connect to the interface of the vacuum cleaner. A suction port connected to the hollow inner cavity of the insertion section is provided on the side wall of the insertion section, so that when the vacuum cleaner is turned on, suction can be generated at the suction port through the hollow inner cavity of the joint section and the hollow inner cavity of the insertion section. The end of the insertion section away from the joint section is a closed structure, which can avoid dispersing suction and ensure the suction effect at the suction port. The cross-sectional area of ​​the insertion section is smaller than the cross-sectional area of ​​the joint section, which ensures that the insertion section can be inserted into the through hole to be cleaned. The suction opening extends in the same direction as the length of the insertion section, so the suction opening is a long hole. When the insertion section enters the through-hole to be cleaned and begins cleaning, the suction opening can be aligned with the inner surface of the through-hole to be cleaned. The suction force at the suction opening can remove foreign matter on the inner surface of the through-hole to be cleaned, thereby cleaning the through-hole. At the same time, due to the long suction opening, the back-and-forth movement along the length of the through-hole to be cleaned can be reduced, thereby ensuring cleaning efficiency.

[0007] Furthermore, at least two suction ports are provided, and the suction ports are spaced apart and distributed along the periphery of the extending section.

[0008] Furthermore, the number of the suction ports is 3-5, and the suction ports are evenly distributed along the outer circumference of the extending section.

[0009] Furthermore, the outer circumferential surfaces of the joint section and the extending section are both cylindrical surfaces, and the joint section and the extending section are coaxial.

[0010] Furthermore, the outer diameter of the insertion section is less than 0.6 times the outer diameter of the joint section.

[0011] Furthermore, the length of the extending section is more than twice the length of the joint section.

[0012] Furthermore, the length of the suction port is 0.5 to 0.7 times the length of the insertion section.

[0013] Furthermore, the joint section and the extending section are connected via a hollow frustum-shaped connecting section.

[0014] Furthermore, the joint section, the connecting section and the extending section are integrally arranged.

[0015] Furthermore, an outer chamfer is provided at one end of the joint section away from the extending section. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a front view of an embodiment of a hole cleaning nozzle of the present invention;

[0017] Figure 2 for Figure 1 AA section view in;

[0018] Figure 3 This is a schematic structural diagram of an embodiment of a hole cleaning suction head of the present utility model.

[0019] In the figure: 1, joint section; 11, chamfer; 2, insertion section; 21, suction port; 3, connection section. DETAILED DESCRIPTION

[0020] The features and performance of the present invention are further described in detail below in conjunction with the embodiments.

[0021] In response to the technical problems existing in the prior art, the basic technical concept of the present invention is to design a suction head that is convenient for cleaning foreign matter on the inner wall of the through hole. One end of the suction head is connected to the suction port of the vacuum cleaner, and the other end extends into the through hole. A suction port connected to the inner cavity is provided on the side wall of the suction head, so that the suction port can suck away foreign matter on the inner wall of the through hole, thereby achieving through-hole cleaning.

[0022] Embodiments of the hole cleaning nozzle in the present invention:

[0023] like Figure 1-3 As shown, the hole cleaning nozzle includes a connector section 1 and an insertion section 2 for inserting into the through hole to be cleaned. The insertion section 2 and the connector section 1 have a connected hollow inner cavity. In this embodiment, the insertion section 2 and the connector section 1 are both hollow cylindrical structures. The connector section 1 and the insertion section 2 are coaxial, which is beautiful and easy to manufacture. The end of the connector section 1 away from the insertion section 2 is open for connection to the interface of the vacuum cleaner. The specific size of the connector section 1 can be flexibly set according to the size of the vacuum cleaner interface. In this embodiment, when in use, the end of the connector section 1 is inserted into the interface of the vacuum cleaner. As shown in FIG. Figure 2 As shown, the end of the connector section 1 away from the insertion section 2 is provided with a chamfer 11 to facilitate quick disassembly and assembly of the interface between the connector section 1 and the vacuum cleaner.

[0024] like Figure 1-3As shown, the outer diameter of the insertion section 2 is smaller than the outer diameter of the joint section 1 to ensure that the insertion section 2 can smoothly extend into the interior of the through hole to be cleaned. In this embodiment, the outer diameter of the insertion section 2 is less than 0.6 times the outer diameter of the joint section 1. Since the insertion section 2 can extend into a through hole with a hole diameter smaller than its outer diameter, the outer diameter of the insertion section 2 is smaller, which allows the hole cleaning suction head to be applicable to cleaning of more different through hole diameters. Preferably, the outer diameter of the insertion section 2 is 0.52 times the outer diameter of the joint section 1, which can not only make the scope of application of the hole cleaning suction head larger, but also ensure cleaning efficiency. The length of the insertion section 2 is greater than the length of the joint section 1. In this embodiment, the length of the insertion section 2 is more than twice the length of the joint section 1. The longer length of the insertion section 2 allows the insertion section 2 to span a larger range of hole depth sizes of the through hole to be cleaned, thereby making the range of through holes applicable to the hole cleaning suction head larger. Preferably, the length of the insertion section 2 is 2.4 times the length of the joint section 1. In this case, the scope of application of the hole cleaning nozzle is wide while taking into account the cleaning efficiency. The side wall of the insertion section 2 is provided with a suction port 21 extending along the length direction of the insertion section 2 and connected to the hollow inner cavity of the insertion section 2, that is, the suction port 21 is a long hole. In this embodiment, the length of the suction port 21 is 0.5 to 0.7 times the length of the insertion section 2. When the length of the suction port 21 is too long, the suction force at the suction port 21 will become smaller, making the cleaning efficiency lower; and when the length of the suction port 21 is too small, the insertion section 2 is relatively too long, which wastes production materials and increases production costs. Preferably, the length of the suction port 21 is 0.56 times the length of the insertion section 2, which not only improves the utilization rate of the insertion section 2 but also ensures cleaning efficiency. During use, when the insertion section 2 is inserted into the through hole to be cleaned, the length direction of the suction port 21 can be the same as the length direction of the through hole to be cleaned, so the distance and number of times the hole cleaning suction head moves back and forth in the length direction of the through hole to be cleaned can be effectively reduced.

[0025] There are at least two suction ports 21, and each suction port 21 is evenly distributed along the periphery of the insertion section 2. When cleaning the through-hole, it is necessary to slowly rotate the insertion section 2 so that the suction port 21 corresponds to the inner wall of the through-hole to be cleaned. A plurality of suction ports 21 can make the rotation angle of the insertion section 2 less than 360°, which is convenient for personnel to operate. Each suction port 21 is distributed at intervals along the periphery of the insertion section 2. In this embodiment, the number of suction ports 21 is 3-5. If the number of suction ports 21 is too small, the required rotation angle of the insertion section 2 is large, and if the number of suction ports 21 is too large, the suction force will be dispersed, resulting in a decrease in cleaning efficiency. Preferably, as Figure 3As shown, the number of suction ports 21 is set to four, and each suction port 21 is set to an oblong hole of the same size, which not only ensures the suction force at the suction port 21, but also reduces the rotation amplitude of the insertion section 2 during use, making it easier for personnel to operate. When in use, the vacuum cleaner generates suction at the suction port 21 through the hollow inner cavity connected to the insertion section 2 and the joint section 1. Therefore, when the insertion section 2 is inserted into the through hole to be cleaned, the suction port 21 can suck away foreign matter on the inner wall of the hole, thereby cleaning the inner wall of the through hole to be cleaned. At the same time, for the cylindrical flange structure, the flange through hole will be cleaned when the two flanges are assembled. Usually, the two flanges are first positioned by two bolts so that the corresponding through holes on the two flanges are aligned, so that the two through holes can be cleaned at the same time, improving the cleaning efficiency. At this time, there is a gap between the joint surfaces of the two flanges. Therefore, when the suction port 21 spans the gap, it can also suck out foreign matter on the joint surfaces of the two flanges, thereby cleaning the gap between the joint surfaces of the two flanges. The end of the insertion section 2, away from the connector section 1, is closed to avoid dispersing the suction force and ensure cleaning efficiency. In actual production, the outer diameter and length of the insertion section 2, as well as the size, number, and position of the suction ports 21, can be determined based on the hole diameter and depth of the through hole to be cleaned to ensure effective cleaning.

[0026] like Figure 1-3 As shown, the joint section 1 and the insertion section 2 are connected by a hollow truncated cone-shaped connecting section 3, and the inner cavity of the connecting section 3 is connected to the joint section 1 and the hollow inner cavity of the insertion section 2. The connecting section 3 can make the airflow smoothly transition from the insertion section 2 to the joint section 1, slow down the gradient of the airflow change, and reduce noise. In this embodiment, the joint section 1, the connecting section 3 and the insertion section 2 are integrated and are all made of light and strong nylon. The nylon material can avoid scratching the inner wall of the through hole to be cleaned and is easy to process and manufacture. Specifically, the hole cleaning nozzle is made of nylon rod as a whole, the joint section 1 is processed by a lathe, and the insertion section 2 is processed by a drill bit, and the drilling must ensure that the end face of the insertion section 2 is closed.

[0027] During use: insert the interface end 1 into the interface of the vacuum cleaner, the assembler can hold the hole cleaning nozzle and insert the insertion section 2 into the through hole to be cleaned, and move the insertion section 2 close to the inner wall of the through hole to be cleaned. While rotating the interface end 1, the insertion section 2 is slowly moved along the inner wall of the through hole to be cleaned. If the hole length of the through hole to be cleaned is greater than the hole length of the suction port 21, after the insertion section 2 moves along the inner wall of the through hole to be cleaned for 1-3 circles, the insertion section 2 is moved along the hole length of the through hole to be cleaned for a distance, and the interface end 1 is repeatedly rotated while the insertion section 2 is moved along the inner wall of the through hole to be cleaned until the inner wall of the through hole to be cleaned is completely cleaned. If the hole length of the through hole to be cleaned is less than or equal to the hole length of the suction port 21, it is only necessary to slowly rotate the interface end 1 and move along the inner surface of the through hole to be cleaned. In addition, for locations such as the gap between the two flange joints, foreign matter in the gap can also be sucked out through the suction port 21. In this case, the suction port 21 needs to be placed across the gap.

[0028] In other embodiments, the end of the joint section away from the insertion section may not be provided with an external chamfer, and the vacuum cleaner interface can be inserted into the joint section. In this case, an internal chamfer may be provided at the end of the joint section away from the insertion section; in other embodiments, no chamfer may be provided on the joint section.

[0029] In other embodiments, the joint segment, the connecting segment and the insertion segment can be manufactured separately, and then the insertion segment can be welded or bonded to the end of the connecting segment. The connecting segment can also be welded or bonded between the connecting segment and the joint segment.

[0030] In other embodiments, when setting the shape of the connecting segment, the connecting segment may be set to be a quadrangular pyramid, and in this case, the through hole inside the connecting segment is a tapered hole.

[0031] In other embodiments, the connecting section may not be provided, and the joint section and the extending section may be directly connected.

[0032] In other embodiments, when setting the length of the suction port, the length of the suction port can be set to 0.5 times, 0.6 times or 0.7 times the length of the insertion section; in other embodiments, the length of the suction port can also be set to 0.45 times or 0.75 times the length of the insertion section.

[0033] In other embodiments, when setting the length of the extension section, the length of the extension section can be 2 times, 2.3 times, 2.5 times, or other multiples greater than 2 times the length of the joint section; in other embodiments, the length of the extension section can be 1.9 times the length of the joint section.

[0034] In other embodiments, when setting the outer diameter of the insertion section and the outer diameter of the joint section, the outer diameter of the insertion section can be set to 0.6 times, 0.55 times, 0.50 times, or other multiples less than 0.6 times the outer diameter of the joint section; in other embodiments, the outer diameter of the insertion section can also be set to 0.65 times the outer diameter of the joint section.

[0035] In other embodiments, the joint segment and the extension segment may not be coaxial.

[0036] In other embodiments, the outer peripheral surfaces of the joint section and the insertion section may not be set as cylindrical surfaces, and the outer peripheral surfaces of the joint section and the insertion section may both be set as quadrangular prisms or hexagonal prisms; in other embodiments, the outer peripheral surface of the joint section may be set as a quadrangular prism or a hexagonal prism, and the outer peripheral surface of the insertion section may still be set as a cylindrical surface; in other embodiments, the outer peripheral surface of the insertion section may be set as a quadrangular prism or a hexagonal prism, and the outer peripheral surface of the joint section may still be set as a cylindrical surface. In the above transformation methods, it is only necessary to ensure that the cross-sectional area of ​​the insertion section is smaller than the cross-sectional area of ​​the joint section.

[0037] In other embodiments, when setting the distribution of the suction openings, the suction openings may not be evenly distributed along the outer circumference of the extending section, and the intervals between two adjacent suction openings may not be equal.

[0038] In other embodiments, when setting the number of suction ports, the number of suction ports may be two, three, five, six, or other numbers greater than two; in other embodiments, the number of suction ports may also be one.

[0039] Finally, it should be noted that the above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments without inventive effort, or replace some of the technical features therein with equivalents. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.

Claims

1. A hole cleaning nozzle, characterized in that: It includes a joint section and an insertion section for inserting into the through hole to be cleaned, the cross-sectional area of ​​the insertion section is smaller than the cross-sectional area of ​​the joint section, the insertion section and the joint section have a connected hollow inner cavity, the end of the joint section away from the insertion section is open for connecting to the interface of the vacuum cleaner, the end of the insertion section away from the joint section is a closed structure, and a suction port is provided on the side wall of the insertion section, which extends along the length direction of the insertion section and is connected to the hollow inner cavity of the insertion section.

2. The hole cleaning suction head according to claim 1, characterized in that: At least two suction ports are provided, and the suction ports are distributed at intervals along the periphery of the extending section.

3. The hole cleaning suction tip according to claim 2, characterized in that: The number of the suction ports is 3-5, and the suction ports are evenly distributed along the outer circumference of the extending section.

4. The hole cleaning suction tip according to any one of claims 1 to 3, characterized in that: The outer circumferences of the joint section and the extending section are both cylindrical surfaces, and the joint section and the extending section are coaxial.

5. The hole cleaning suction tip according to claim 4, characterized in that: The outer diameter of the insertion section is less than 0.6 times the outer diameter of the joint section.

6. The hole cleaning suction tip according to any one of claims 1 to 3, characterized in that: The length of the extension section is more than twice the length of the joint section.

7. The hole cleaning suction tip according to any one of claims 1 to 3, characterized in that: The length of the suction port is 0.5 to 0.7 times the length of the insertion section.

8. The hole cleaning suction tip according to claim 4, characterized in that: The joint section and the extending section are connected via a hollow frustum-shaped connecting section.

9. The hole cleaning suction tip according to claim 8, characterized in that: The joint section, the connecting section and the extending section are arranged as one body.

10. The hole cleaning suction tip according to any one of claims 1 to 3, characterized in that: An end of the joint section away from the extending section is provided with an outer chamfer.

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