A through-hole soot blowing device for machining mechanical parts

Abstract

The utility model relates to mechanical part machining technical field discloses a through -hole soot blowing device for mechanical part machining, including the casing, the bottom opening of casing, the inside of casing is equipped with the conical airflow diverter, the surface of conical airflow diverter is equipped with the floating seal ring, the inner wall of floating seal ring and casing is sealed connection of sliding, the middle part of floating seal ring is equipped with the airflow hole that cooperates with the taper face of conical airflow diverter, the bottom of floating seal ring is equipped with the flexible sealing lip fixedly, the utility model conical airflow diverter will axial air intake high -efficient conversion be with the high -speed concentrated airflow of radial component, through the annular gap formed by the taper face and floating seal ring airflow hole acceleration rectification, make the airflow more strong, more evenly cover through -hole inner wall, significantly improve the efficiency and cleaning quality of chip removal, especially suitable for complex structure such as deep hole, small hole diameter.

Description

Technical Field

[0001] This utility model relates to the field of mechanical parts processing technology, specifically a through-hole blowing device for mechanical parts processing. Background Technology

[0002] In the field of mechanical parts processing, iron filings, dust, or coolant impurities remaining inside through holes (such as oil passage holes, positioning holes, assembly holes, etc.) can easily lead to a decrease in subsequent assembly accuracy, functional failure, or even equipment damage; therefore, cleaning through holes is a key process to ensure the quality of parts.

[0003] Currently, compressed air blowing is the most widely used cleaning method, but it has the following problems: low airflow efficiency and poor directionality. The airflow output by traditional blow guns or straight nozzles is mostly concentrated axially, which is difficult to effectively cover the entire circumference of the inner wall of the through hole. It is particularly ineffective for cleaning deep holes, small diameter holes or complex hole shapes with steps. The airflow is prone to forming eddies or premature diffusion in the hole, resulting in low energy utilization and difficulty in completely removing firmly attached debris. Poor sealing leads to energy loss and secondary pollution. During blowing, if there is a gap between the nozzle and the workpiece hole, the high-pressure airflow will leak from the gap, which not only greatly reduces the effective airflow pressure and flow rate entering the hole and weakens the cleaning power, but also blows away debris and oil around the hole, polluting the working environment and adjacent precision parts. Utility Model Content

[0004] The purpose of this invention is to provide a through-hole cleaning device for machining mechanical parts, which has the effects of efficient airflow conversion and accelerated cleaning.

[0005] The above-mentioned technical objective of this utility model is achieved through the following technical solution: a through-hole blowing device for machining mechanical parts, comprising a housing with an opening at the bottom, a conical airflow splitter inside the housing, wherein the bottom dimension of the conical airflow splitter is smaller than the top dimension, a floating sealing ring is fitted on the surface of the conical airflow splitter, the floating sealing ring is slidably sealed to the inner wall of the housing, an airflow hole is provided in the middle of the floating sealing ring that mates with the conical surface of the conical airflow splitter, a flexible sealing lip is fixedly provided at the bottom end of the floating sealing ring, a return spring is provided between the floating sealing ring and the top of the conical airflow splitter, and a clamping mechanism is provided at the bottom of the side of the housing.

[0006] A further feature of this invention is that a positioning plate is fixedly provided at the bottom of the housing, and a silicone adsorption pad is embedded at the bottom of the positioning plate.

[0007] A further feature of this invention is that the top of the housing is provided with a top cover, and the top cover is fixedly connected to the top of the housing by mounting screws, and the top of the conical airflow splitter is fixedly provided with a mounting rod that is fixedly connected to the inner wall of the top cover.

[0008] A further feature of this invention is that a compressed air inlet connector is fixedly provided on the top of one side of the housing, the compressed air inlet connector is connected to an external compressed air source, and the compressed air inlet connector corresponds to the conical surface at the top of the conical airflow splitter.

[0009] A further feature of this invention is that: a guide rod is fixedly provided at the top of the floating sealing ring and slidably connected to the upper cover; a limiting plate is fixedly provided at the top of the guide rod; a wear-resistant sealing gasket is provided at the sliding point between the upper cover and the guide rod; a sealing groove is provided on the side of the floating sealing ring; and a sealing ring is embedded inside the sealing groove 302.

[0010] A further feature of this invention is that a connecting seat is fixedly provided on the side of the top of the conical airflow splitter, the connecting seat is fixedly connected to the top end of the return spring, and the bottom end of the return spring is fixedly connected to the top end of the floating sealing ring.

[0011] A further feature of this invention is that the clamping mechanism includes a mounting base, a mounting frame, and a clamping screw. One end of the mounting base is fixedly provided with a fixing seat, which is fixedly connected to the side of the housing by a fixing screw. The mounting frame is L-shaped, and its horizontal section is slidably connected to the mounting base. A threaded seat is fixedly provided at the bottom of the vertical section of the mounting frame. The clamping screw is threadedly connected to the threaded seat, and a clamping seat is fixedly provided at the end of the clamping screw near the housing. A further feature of this invention is that the surface of the mounting base has a sliding groove, and a slider that is slidably connected to the sliding groove is fixedly provided at the end of the horizontal section of the mounting frame. A locking screw is fixedly provided at the bottom end of the slider, and a locking nut is threaded onto the bottom of the locking screw.

[0012] In summary, this utility model has the following beneficial effects: The conical airflow diverter efficiently converts axial air intake into a high-speed concentrated airflow with a radial component. The annular gap formed by the conical surface and the airflow hole of the floating sealing ring accelerates and rectifys the airflow, making it more powerful and uniformly cover the inner wall of the through-hole, significantly improving debris removal efficiency and cleaning quality. It is especially suitable for complex structures such as deep holes and small diameter holes. The air pressure drives the floating sealing ring to overcome the resistance of the return spring and move downwards. The flexible sealing lip adaptively conforms to the workpiece surface under pressure, achieving a reliable seal around the through-hole. This design effectively prevents airflow leakage and ensures concentrated energy. It cleans the inside of the hole while preventing debris from splashing and polluting the environment; the high-speed airflow continuously washes the contact area between the conical surface of the conical airflow distributor and the airflow hole of the floating sealing ring, automatically removing intruding debris or oil. Combined with the precision sliding structure of the guide rod, it significantly reduces the risk of floating parts getting stuck and improves the device; the silicone adsorption pad embedded in the bottom positioning plate provides initial adsorption and positioning, and with the adjustable design of the clamping mechanism (slide slider adjustment, replaceable clamping seat, anti-slip pad), it can quickly adapt to the surface of different shaped workpieces and achieve stable clamping. The elastic material of the flexible sealing lip further compensates for the unevenness of the workpiece surface and ensures the effectiveness of the seal. Attached Figure Description

[0013] Fig. 1 This is one of the three-dimensional structural schematic diagrams of this utility model;

[0014] Fig. 2 This is the second three-dimensional structural schematic diagram of the present invention;

[0015] Fig. 3 This is a cross-sectional structural diagram of the present invention;

[0016] Fig. 4 This is a schematic diagram of the clamping mechanism of this utility model;

[0017] Fig. 5 This is a schematic diagram of the structure of the conical airflow splitter of this utility model;

[0018] Fig. 6 This is a schematic diagram of the structure of the floating sealing ring of this utility model.

[0019] In the diagram: 1. Housing; 101. Top cover; 102. Positioning plate; 103. Silicone suction pad; 104. Compressed air inlet connector; 2. Conical airflow splitter; 201. Mounting rod; 202. Connecting seat; 3. Floating sealing ring; 301. Airflow hole; 302. Sealing groove; 303. Sealing ring; 304. Flexible sealing lip; 305. Return spring; 306. Guide rod; 307. Limiting plate; 4. Clamping mechanism; 401. Mounting seat; 402. Fixed seat; 403. Slide groove; 404. Mounting bracket; 405. Slider; 406. Locking screw; 407. Threaded seat; 408. Clamping screw; 409. Clamping seat. Detailed Implementation

[0020] The present invention will be further described below with reference to the accompanying drawings of the embodiments thereof.

[0021] Please see Figs. 1-6 In this embodiment of the present invention, a through-hole blowing device for machining mechanical parts includes a housing 1 with an opening at the bottom. A conical airflow splitter 2 is provided inside the housing 1, fixed on the central axis of the housing 1. The bottom dimension of the conical airflow splitter 2 is smaller than the top dimension, and the angle of the conical surface is 30-60 degrees. This efficiently converts the axial airflow from the inlet into airflow with a certain radial component. Furthermore, the diameter of the bottom of the conical airflow splitter 2 is larger than the minimum aperture of the through-hole of the mechanical part. There is a certain gap between the bottom of the conical airflow splitter 2 and the bottom surface of the housing 1. A floating sealing ring 3 is fitted onto the surface of the conical airflow splitter 2. The floating sealing ring 3 is slidably sealed to the inner wall of the housing 1, allowing it to slide up and down axially. An airflow hole 301 is provided in the middle of the floating sealing ring 3, which mates with the conical surface of the conical airflow splitter 2. The conical surface of the conical airflow splitter 2 and the airflow hole 301 of the floating sealing ring 3... The formed annular gap not only guides the airflow, but its narrow and gradually widening channel also accelerates and rectifies the airflow, making the airflow more concentrated and powerfully directed towards the through hole. At the same time, the high-speed airflow continuously washes the airflow hole 301 and the conical contact area of ​​the floating sealing ring 3, carrying away any debris that may enter and preventing jamming. The bottom end of the floating sealing ring 3 is fixedly provided with a flexible sealing lip 304, which is made of wear-resistant, oil-resistant, and highly elastic materials such as polyurethane and fluororubber. The elastic material of the flexible sealing lip 304 further compensates for the unevenness of the workpiece surface and ensures the effectiveness of the seal. A return spring 305 is provided between the top of the floating sealing ring 3 and the conical airflow diverter 2, which pushes the floating sealing ring 3 to the upper position when there is no air pressure. The bottom of the side of the housing 1 is provided with a clamping mechanism 4, which can stably fix the device on the workpiece and initially press the flexible sealing lip 304 around the through hole of the workpiece to ensure the stability of the device and provide a basis for subsequent air pressure sealing.

[0022] In this embodiment, preferably, a positioning disk 102 is fixedly provided at the bottom of the housing 1, and a silicone adsorption pad 103 is embedded at the bottom of the positioning disk 102, which can attach the bottom of the housing 1 to the upper surface of the workpiece and can initially limit the position of the housing 1.

[0023] In this embodiment, preferably, the top of the housing 1 is provided with a top cover 101, and the top cover 101 is fixedly connected to the top of the housing 1 by mounting screws. The top of the conical airflow splitter 2 is fixedly provided with a mounting rod 201 that is fixedly connected to the inner wall of the top cover 101, which is used to limit the position of the conical airflow splitter 2 and also to inspect the internal conical airflow splitter 2.

[0024] In this embodiment, preferably, a compressed air inlet connector 104 is fixedly provided on the top of one side of the housing 1. The compressed air inlet connector 104 is connected to an external compressed air source, and the compressed air inlet connector 104 corresponds to the conical surface at the top of the conical airflow splitter 2. After the compressed air enters the housing 1, the airflow hits the conical surface at the top of the conical airflow splitter 2 and is split and accelerated. Part of the airflow flows downward along the annular gap between the conical surface and the airflow hole 301 of the floating sealing ring 3, and the other part of the airflow acts on the end face of the floating sealing ring 3 through the conical airflow splitter 2. When the air pressure reaches a certain value, the downward air pressure acting on the end face will overcome the elastic force of the return spring 305, thereby pushing the floating sealing ring 3 to slide downward. The flexible sealing lip 304 at the bottom of the compression presses against the area around the through hole on the surface of the workpiece. As the air pressure increases, the downward pressure increases, and the flexible sealing lip 304 undergoes greater deformation, tightly fitting the orifice to achieve adaptive sealing.

[0025] In this embodiment, preferably, the top end of the floating sealing ring 3 is fixedly provided with a guide rod 306 that is slidably connected to the upper cover 101, the top end of the guide rod 306 is fixedly provided with a limiting plate 307, and a wear-resistant sealing gasket is provided at the sliding point between the upper cover 101 and the guide rod 306 to ensure sealing and guide the up and down sliding of the floating sealing ring 3.

[0026] In this embodiment, preferably, the side of the floating sealing ring 3 is provided with a sealing groove 302, and a sealing ring 303 is embedded in the sealing groove 302 to ensure the sealing between the floating sealing ring 3 and the housing 1.

[0027] In this embodiment, preferably, a connecting seat 202 is fixedly provided on the side of the top of the conical airflow diverter 2. The connecting seat 202 is fixedly connected to the top end of the return spring 305, and the bottom end of the return spring 305 is fixedly connected to the top end of the floating sealing ring 3. When there is no air pressure under normal conditions, the floating sealing ring 3 is pushed to the upper position. When the air pressure reaches a certain value, the downward air pressure acting on the end face will overcome the elastic force of the return spring 305, thereby pushing the floating sealing ring 3 to slide downward.

[0028] In this embodiment, preferably, the clamping mechanism 4 includes a mounting base 401, a mounting frame 404, and a clamping screw 408. A fixing seat 402 is fixedly provided at one end of the mounting base 401. The fixing seat 402 is fixedly connected to the side of the housing 1 by fixing screws. The mounting frame 404 is L-shaped, and the horizontal section of the mounting frame 404 is slidably connected to the mounting base 401. The sliding fit between the mounting frame 404 and the mounting base 401 allows adjustment of the position of the lower clamping seat 409. A threaded seat 407 is fixedly provided at the bottom of the vertical section of the mounting frame 404. The clamping screw 408 is threadedly connected to the threaded seat 407, and a clamping seat 409 is fixedly provided at the end of the clamping screw 408 near the housing 1. The clamping seat 409 is threadedly installed with the clamping screw 408, allowing the clamping seat 409 to be replaced according to the shape of the workpiece. An anti-slip pad is embedded on the inner side of the clamping seat 409. The clamping screw 408 can be tightened to allow for adjustment of the clamping position. The clamping base 409 is moved laterally, thereby using the clamping force between several clamping bases 409 to limit the housing 1 above the workpiece. The surface of the mounting base 401 is provided with a sliding groove 403. The end of the horizontal section of the mounting frame 404 is fixedly provided with a slider 405 that is slidably connected to the sliding groove 403. The sliding cooperation between the sliding groove 403 and the slider 405 can guide and limit the movement of the mounting frame 404. The bottom end of the slider 405 is fixedly provided with a locking screw 406. The bottom thread of the locking screw 406 is installed with a locking nut. The threaded cooperation between the locking screw 406 and the locking nut can lock the position of the slider 405. The silicone adsorption pad 103 embedded in the bottom positioning plate 102 provides initial adsorption and positioning. With the adjustable design of the clamping mechanism 4 (adjustable sliding groove 403 and slider 405, replaceable clamping base 409, anti-slip pad), it can quickly adapt to the surface of workpieces of different shapes and achieve stable clamping.

[0029] In use, the positioning plate 102 at the bottom of the device is initially attached to the surface of the workpiece using the silicone adsorption pad 103, so that the central axis of the housing 1 is aligned with the through hole position; loosen the locking nut and slide the mounting bracket 404 along the slide groove 403 of the mounting base 401 so that the clamping seat 409 is close to the side edge of the workpiece; tighten the locking nut to fix the position of the slider 405; rotate the clamping screw 408 to push the clamping seat 409 inward, and clamp the workpiece with the anti-slip pad to achieve overall stable fixation of the device; compressed air enters the interior of the housing 1 from the compressed air inlet connector 104. The airflow first hits the conical surface at the top of the conical airflow splitter 2, and the airflow is divided into two paths. Most of the airflow flows downward along the annular gap formed by the conical surface of the conical airflow splitter 2 and the airflow hole 301 of the floating sealing ring 3. The narrow, gradually widening channel accelerates and rectifies the airflow, forming a high-speed, concentrated jet. Part of the airflow acts on the top face of the floating sealing ring 3. When the air pressure reaches a set threshold, the downward aerodynamic force acting on the end face of the floating sealing ring 3 overcomes the elastic force of the return spring 305, pushing the floating sealing ring 3 downwards along the guide rod 306. The flexible sealing lip 304 at the bottom of the floating sealing ring 3 deforms under pressure, tightly adhering to the workpiece surface and covering the edge of the through hole, forming a dynamic seal and preventing airflow leakage. The accelerated and rectified main cleaning airflow is ejected vertically from the annular gap with high dynamic velocity. It can impact the inner wall of the through hole. The radial component of the conical surface design allows the airflow to fully cover the entire circumference of the hole wall, thoroughly removing attached debris. The high-speed airflow continuously washes the contact area between the conical surface of the conical airflow splitter 2 and the airflow hole 301 of the floating sealing ring 3, automatically carrying away any debris or oil that may have entered, preventing the floating parts from getting stuck. After the air source is turned off, the air pressure inside the housing 1 disappears, the return spring 305 pushes the floating sealing ring 3 to slide up and return to its original position along the guide rod 306, the flexible sealing lip 304 disengages from the workpiece surface, and the clamping screw 408 of the clamping mechanism 4 is released, allowing the device to be disassembled.

[0030] The above description is only a preferred embodiment of the present utility model. Therefore, all equivalent changes or modifications made to the structure, features and principles described in the claims of the present utility model patent application are included in the scope of the present utility model patent application.

Claims

1. A through-hole blowing device for machining mechanical parts, comprising a housing (1) and a bottom opening of the housing (1), characterized in that, The housing (1) is provided with a conical airflow splitter (2) inside, and the bottom dimension of the conical airflow splitter (2) is smaller than the top dimension. A floating sealing ring (3) is fitted on the surface of the conical airflow splitter (2). The floating sealing ring (3) is slidably sealed to the inner wall of the housing (1). The middle part of the floating sealing ring (3) is provided with an airflow hole (301) that matches the conical surface of the conical airflow splitter (2). A flexible sealing lip (304) is fixedly provided at the bottom end of the floating sealing ring (3). A return spring (305) is provided between the floating sealing ring (3) and the top of the conical airflow splitter (2). A clamping mechanism (4) is provided at the bottom of the side of the housing (1).

2. The through-hole blowing device for machining mechanical parts according to claim 1, characterized in that: The bottom end of the housing (1) is fixedly provided with a positioning disk (102), and a silicone adsorption pad (103) is embedded in the bottom of the positioning disk (102).

3. The through-hole blowing device for machining mechanical parts according to claim 1, characterized in that: The top of the housing (1) is provided with a top cover (101), and the top cover (101) is fixedly connected to the top of the housing (1) by mounting screws, and the top of the conical airflow splitter (2) is fixedly provided with a mounting rod (201) that is fixedly connected to the inner wall of the top cover (101).

4. The through-hole blowing device for machining mechanical parts according to claim 1, characterized in that: A compressed air inlet connector (104) is fixedly provided on the top of one side of the housing (1). The compressed air inlet connector (104) is connected to an external compressed air source, and the compressed air inlet connector (104) corresponds to the cone surface at the top of the cone-shaped airflow splitter (2).

5. The through-hole blowing device for machining mechanical parts according to claim 3, characterized in that: The top end of the floating sealing ring (3) is fixedly provided with a guide rod (306) that is slidably connected to the upper cover (101). The top end of the guide rod (306) is fixedly provided with a limiting plate (307). A wear-resistant sealing gasket is provided at the sliding point between the upper cover (101) and the guide rod (306). The side of the floating sealing ring (3) is provided with a sealing groove (302). A sealing ring (303) is embedded inside the sealing groove (302).

6. The through-hole blowing device for machining mechanical parts according to claim 1, characterized in that: A connecting seat (202) is fixedly provided on the side of the top of the conical airflow splitter (2). The connecting seat (202) is fixedly connected to the top end of the return spring (305). The bottom end of the return spring (305) is fixedly connected to the top end of the floating sealing ring (3).

7. The through-hole blowing device for machining mechanical parts according to claim 1, characterized in that: The clamping mechanism (4) includes a mounting base (401), a mounting bracket (404), and a clamping screw (408). One end of the mounting base (401) is fixedly provided with a fixing seat (402). The fixing seat (402) is fixedly connected to the side of the housing (1) by a fixing screw. The mounting bracket (404) is L-shaped, and the horizontal section of the mounting bracket (404) is slidably connected to the mounting base (401). The bottom of the vertical section of the mounting bracket (404) is fixedly provided with a threaded seat (407). The clamping screw (408) is threadedly connected to the threaded seat (407), and a clamping seat (409) is fixedly provided at the end of the clamping screw (408) near the housing (1).

8. The through-hole blowing device for machining mechanical parts according to claim 7, characterized in that: The surface of the mounting base (401) is provided with a sliding groove (403). The end of the horizontal section of the mounting bracket (404) is fixedly provided with a slider (405) that is slidably connected to the sliding groove (403). The bottom end of the slider (405) is fixedly provided with a locking screw (406), and a locking nut is threaded onto the bottom of the locking screw (406).

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