CN111195829A

CN111195829A - Blowing nozzle for cleaning slag of motorcycle cylinder cover

Info

Publication number: CN111195829A
Application number: CN202010022234.1A
Authority: CN
Inventors: 林勇
Original assignee: Chongqing Chuanpu Machinery Co ltd
Current assignee: Chongqing Chuanpu Machinery Co ltd
Priority date: 2020-01-09
Filing date: 2020-01-09
Publication date: 2020-05-26
Anticipated expiration: 2040-01-09
Also published as: CN111195829B

Abstract

The invention discloses a blowing nozzle for cleaning slag of a motorcycle cylinder cover, which comprises a main body and a nozzle communicated with a compressed air source, wherein the nozzle is arranged in the main body and is of a hollow structure and sequentially comprises a knob part, a first optical axis section, a thread section and an air outlet axis section from top to bottom; the main body comprises an axial hole which is axially arranged in a penetrating manner, the axial hole is used for mounting the nozzle, and the axial hole comprises an inner expanding cavity, a mounting cavity, a threaded hole and a connecting hole, wherein the inner diameter of the inner expanding cavity is sequentially reduced from top to bottom; the internal expanding cavity is cylindrical, the bottom of the internal expanding cavity and the connecting part of the arranging cavity form a circular step, an annular spigot part formed by horizontally extending towards the center is arranged at the port part of the top of the internal expanding cavity, and a sealing gasket, a pressure pad, an external cylindrical spring and an annular pad are sequentially arranged between the step and the inner end surface of the spigot part from top to bottom. The invention is convenient for adjusting the pressure of the sealing ring, and the whole blowing nozzle has long service life and good reliability.

Description

Blowing nozzle for cleaning slag of motorcycle cylinder cover

Technical Field

The invention belongs to the technical field of machining part residue cleaning equipment, and particularly relates to a blowing nozzle for cleaning residues on a cylinder cover of a motorcycle.

Background

In the processing of motorcycle cylinder cover, need to process a plurality of holes on the cylinder cover, wherein there is the through-hole also to have the blind hole, relatively speaking, the residue is got rid of in time mostly by the drill bit in the through-hole processing, however the blind hole processing, some residue such as metal chip can remain at the bottom of the hole, it is difficult to clear away, especially the smaller blind hole is difficult to clear away, at present, the residue of blind hole is cleared away and mostly adopts the high-pressure air current to spray and sweep, sweep the residue out, because the blind hole is more, the part is in large batches, therefore need frequently use the blow gun of sweeping the blind hole, the existing blow gun is a simple tubular structure, it is inserted with the hose that carries the compressed air current, after using more times, the very easy inside ring shape seal ring just warp inefficacy or damaged, this is because one uses the frequency too high, another important reason is that the blow gun also keeps the sealing connection with the blow gun, that is, in order to maintain the sealing connection between the hose and the blowing nozzle, the annular sealing gasket in the blowing nozzle is always in a compressed state, no matter whether the blowing nozzle works or not, therefore, air leaks from the connection part between the blowing nozzle and the hose over time, the pressure of the compressed air entering the blowing nozzle sprayed out is reduced, and the blowing cleaning effect is affected.

Disclosure of Invention

The invention aims to solve the technical problems and provides the blowing nozzle for cleaning the slag of the cylinder cover of the motorcycle, which is provided with the special sealing gasket and the special sealing gasket pressing mechanism, so that the pressing force of the sealing gasket can be conveniently adjusted, the aim of reducing or removing the pressing force of the sealing gasket when the blowing nozzle is idle is fulfilled, and the service life and the reliability of the whole blowing nozzle are improved.

The technical scheme of the invention is as follows: a blowing nozzle for cleaning slag on motorcycle cylinder cover comprises a main body and a nozzle communicated with a compressed air source, wherein the nozzle is arranged in the main body, and the blowing nozzle is arranged in the main body

The nozzle is of a hollow structure and sequentially comprises a knob part, a first optical axis section, a thread section and an air outlet axis section from top to bottom, and the whole nozzle can be rotated by holding the knob part;

the main body comprises a shaft hole which is axially arranged in a penetrating manner, the shaft hole is used for mounting the nozzle, and the shaft hole comprises an inner expanding cavity, a mounting cavity, a threaded hole and a connecting hole, wherein the inner diameter of the inner expanding cavity is sequentially reduced from top to bottom;

the inner expanding cavity is cylindrical, a circular step is formed at the joint of the bottom of the inner expanding cavity and the placing cavity, an annular spigot part which is formed by horizontally extending towards the center is arranged at the port of the top of the inner expanding cavity, a sealing gasket, a pressure pad, an outer cylindrical spring and an annular pad are sequentially arranged between the step and the inner end surface of the spigot part from top to bottom, specifically,

the sealing gasket is of an annular step-shaped structure with a downward convex center, the sealing gasket is axially provided with a circular through hole in a penetrating manner, the inner wall of the through hole close to the lower port of the sealing gasket is cylindrical, the inner walls of the rest parts are recessed inwards to enable the through holes of the rest parts to form a drum-shaped hole section with an expanded middle part, the aperture of the upper port of the through hole is larger than that of the lower port, and the outer side wall of a boss at the lower part of the sealing gasket is conical with a downward small end;

the pressure pad is arranged close to the step surface of the sealing pad, one end of the outer cylindrical spring is connected with the pressing pad, and the other end of the outer cylindrical spring is connected with the annular pad positioned on the step surface of the inner expanding cavity, so that the sealing pad is supported and closely attached to the inner end surface of the mouth stop part through the pressure pad;

the inner cylindrical spring is coaxially arranged in the outer cylindrical spring, one end of the inner cylindrical spring is connected with the end part of a pressing cylinder, the other end of the inner cylindrical spring is connected with the annular gasket, and an inner hole of the pressing cylinder is a conical hole matched with the outer side wall of the boss of the sealing gasket, so that the pressing cylinder is coaxially sleeved on the boss and tightly hoops the boss under the supporting force of the inner cylindrical spring to enable the wall of the shaft hole at the boss to be tightly attached to the first optical axis section of the nozzle;

the mounting cavity is of a funnel-shaped structure, a large port of the mounting cavity faces upwards, a locking part is hinged to the outer wall of the first optical axis section in the mounting cavity and comprises a driving part and a locking part, the bottom ends of the driving part and the locking part are fixedly connected and then hinged to the outer wall of the first optical axis section, an included angle with an upward opening is fixedly connected between the driving part and the locking part, the driving part is arc-shaped and is in smooth contact with a conical surface of the inner wall of the mounting cavity, the free end of the locking part is a smooth cambered surface and is connected with one end face of the annular pressure pad facing the mounting cavity, and the locking part always extrudes the outer cylindrical spring and the inner cylindrical spring when being connected with the annular pressure pad;

the threaded hole is in threaded engagement with the threaded section of the nozzle, and the retaining member further compresses/releases the annular gasket due to the contact engagement of the driving member with the inner wall of the seating chamber when the threaded section is screwed into/out of the threaded hole.

The invention has the beneficial effects that: when the blowing nozzle provided by the invention is used, the extruded tightness of the sealing gasket can be adjusted by rotating the knob part, so that when the slag blowing is finished, all or part of the extrusion force of the sealing gasket can be released by the knob part, the sealing gasket can be restored to a natural state in a non-working state, and the service life of the sealing gasket is prevented from being shortened due to long-term extrusion. In addition, the invention realizes the sealing of the nozzle at the port of the inlet main body only by a special sealing gasket, the sealing gasket can realize three-dimensional sealing, the matching sealing of the inner expanding cavity and the first optical axis section of the nozzle is realized by the positive extrusion force of the step surface of the sealing gasket and the radial extrusion force of the boss of the sealing gasket, and the special drum-shaped inner hole and the special cylindrical inner hole of the sealing gasket are designed, so that the sealing gasket can be better clung to the first optical axis section when being installed, and the reliable sealing is realized.

Drawings

Fig. 1 is a schematic structural diagram of an embodiment of the present invention.

Fig. 2 is a schematic view of the internal structure of the internal expanding cavity in fig. 1.

Fig. 3 is an enlarged view of the structure of the boss of the gasket in contact sealing with the first optical axis section in fig. 2.

Figure 4 is a cross-sectional view of one of the configurations of the driving member.

Figure 5 is a cross-sectional view of an alternative configuration of the drive member.

Element number description: the device comprises a knob part 1, a first optical axis section 2, a thread section 3, an air outlet axis section 4, a main body 5, an inner expanding cavity 501, a mounting cavity 502, a threaded hole 503, a connecting hole 504, a sealing gasket 6, a drum-shaped hole section 601, a boss 602, an annular deformation groove 603, an outer cylindrical spring 7, a pressure pad 8, a pressing cylinder 9, an inner cylindrical spring 10, a sleeve 11, an annular pad 12, a locking part 13 and a driving part 14.

Detailed Description

The following description of the embodiments of the present invention is provided for illustrative purposes, and other advantages and effects of the present invention will become apparent to those skilled in the art from the present disclosure.

The invention is further illustrated by the following examples in conjunction with the accompanying drawings:

the embodiment describes a blowing nozzle for cleaning slag on a motorcycle cylinder cover, and the blowing nozzle is shown in figure 1 and specifically comprises a main body 5 and a nozzle used for being communicated with a compressed air source, wherein the nozzle is arranged in the main body 5. The nozzle of the embodiment is of a hollow structure and is provided with an axial through hole for communicating compressed air, the nozzle sequentially comprises a knob part 1, a first optical axis section 2, a thread section 3 and an air outlet axis section 4 from top to bottom, and the knob part 1 is held to rotate the whole nozzle in a main body 5. Above-mentioned main part 5 includes that the axial runs through the shaft hole that sets up, and the shaft hole is used for supplying the nozzle installation, the shaft hole includes the internal diameter from top to bottom and reduces in proper order expand chamber 501, settle chamber 502, screw hole 503, connecting hole 504. Referring to fig. 2, the inner expanding cavity 501 is cylindrical, a circular step is formed at the joint of the bottom of the inner expanding cavity and the placing cavity 502, an annular spigot portion formed by horizontally extending towards the center is arranged at the port of the top of the inner expanding cavity, and a sealing gasket 6, a pressure pad 8, an outer cylindrical spring 7 and an annular pad 12 are sequentially arranged between the step and the inner end surface of the spigot portion from top to bottom. Specifically, as shown in fig. 2-3, the sealing gasket 6 is an annular step-shaped structure with a downward convex center, a circular through hole for the first optical axis section 2 of the nozzle to pass through is axially arranged in the sealing gasket 6, the inner wall of the through hole near the lower port of the through hole is cylindrical, the inner walls of the rest parts are recessed inwards to enable the through holes of the rest parts to form a drum-shaped hole section 601 with an expanded middle part, the aperture of the upper port of the through hole is larger than that of the lower port, and the outer side wall of the boss 602 at the lower part of the sealing gasket 6 is conical with a downward small end. The pressure pad 8 is tightly attached to the step surface of the sealing gasket 6, one end of the outer cylindrical spring 7 is connected with the pressing pad, the other end of the outer cylindrical spring is connected with the annular pad 12 located on the step surface of the inner expanding cavity 501, and the sealing gasket 6 is supported and tightly attached to the inner end surface of the spigot portion through the pressure pad 8 to be firmly attached to contact and seal.

In addition, as shown in fig. 2-3, the blowing nozzle further comprises an inner cylindrical spring 10 coaxially arranged in the outer cylindrical spring 7, one end of the inner cylindrical spring 10 is connected with the end of a pressing cylinder 9, the other end is connected with the annular pad 12, and the inner hole of the pressing cylinder 9 is a conical hole matched with the outer side wall of the boss 602 of the sealing gasket 6, so that the pressing cylinder 9 is coaxially sleeved on the boss 602 and tightly hooped on the boss 602 under the supporting force of the inner cylindrical spring 10, and the hole wall of the shaft hole at the boss 602 is tightly attached to the first optical axis section 2 of the nozzle. Place chamber 502 and be hopper-shaped structure, its big port up, settle in the chamber 502 articulated on the 2 outer walls of first smooth shaft section have locking part, and this locking part includes driving piece 14 and retaining member 13, and the two bottom rigid couplings of driving piece 14 and retaining member 13 articulate in behind the two outer walls of first smooth shaft section, and connect into opening contained angle up between driving piece 14 and the retaining member 13 admittedly, wherein, driving piece 14 is the arc and its and the smooth contact of the conical surface who settles the chamber 502 inner wall, the free end of retaining member 13 be smooth cambered surface and with annular pressure pad 8 meets towards the one end terminal surface of settling chamber 502, retaining member 13 is right all the time when meeting with annular pressure pad 8 outer cylindrical spring 7 and interior cylindrical spring 10 play the squeezing action. The threaded hole 503 in this embodiment is in threaded fit with the threaded section 3 of the nozzle, when the threaded section 3 is screwed into/out of the threaded hole 503, the locking member 13 further compresses/releases the annular pad 12 due to the contact fit between the driving member 14 and the inner wall of the installation cavity 502, and the force of the locking member 13 pushing and pressing the annular pad 12 when the threaded section 3 is screwed can be realized by changing the taper of the conical surface of the installation cavity 502, the angle between the locking member 13 and the driving member 14, the relative length of the locking member 13 and the driving member 14, and the like.

When the blowing nozzle is used, the blowing nozzle is aligned to a blind hole of a cylinder cover to be blown, the knob part 1 is screwed to enable the nozzle to rotate downwards in the main body 5, then the driving part 14 on the first optical axis section 2 is contacted with a conical surface in the placement cavity 502, the locking part 13 fixedly connected with the driving part 14 into a whole at a certain included angle is enabled to rotate towards one side of the first optical axis section 2, the free end of the locking part 13 is enabled to push the annular pad 12 upwards, the annular pad 12 upwards extrudes the inner cylindrical spring 10 and the outer cylindrical spring 7, the sealing pad 6 is enabled to simultaneously receive extrusion forces vertically upwards and along the radial direction of the first optical axis section 2, the three-dimensional sealing of the sealing pad 6 is realized, a compressed air source enters the axial hole of the main body 5 through the air outlet shaft section 4 of the nozzle, high-pressure air flow is ejected through air injection pipe fittings such as an injection needle pipe connected with the connecting hole 504, and the like, and metal cuttings, residues, And (6) cleaning. However, when the blowing nozzle is not needed to be used, only the knob part 1 of the nozzle needs to be rotated by a certain angle in the counterclockwise direction slightly, so that the driving part 14 can release the extrusion force of one point to the annular gasket 12, the gasket 6 can be completely or partially restored to a natural state, the service life of the gasket 6 is prolonged, the service life of the cylindrical spring is prolonged, frequent work is guaranteed, the sealing performance of the upper end of the blowing nozzle and the connection part of the nozzle is guaranteed, high-pressure air flow is guaranteed to be completely sprayed out from the injection needle pipe connected with the lower end of the main body 5 and not to be leaked from the upper end of the main body 5 during work.

As a specific implementation detail, as shown in fig. 3, an annular deformation groove 603 is provided on the inner wall of the drum-shaped hole section 601 near the wall of the cylindrical hole at the lower end of the through hole, and the cross section of the annular deformation groove 603 is semicircular, so that when the pressing cylinder 9 radially hoops the boss 602 of the seal gasket 6, the contact portion between the boss 602 and the first optical axis section 2 can be bent inward under the annular deformation groove 603, so as to improve the sealing performance. Meanwhile, the pressing cylinder 9 can be fixedly connected with a sleeve 11 towards one end of an annular pad 12, one end of the inner cylindrical spring 10 coaxially extends into the pipe wall of the sleeve 11, and the other end of the inner cylindrical spring is connected with the annular pad 12, so that the installation reliability of the inner cylindrical spring 10 is ensured, and the jacking force of the inner cylindrical spring is fully exerted.

In order to make the driving member 14 better play a role of further pressing/releasing the annular pad 12 when the nozzle is rotated, as shown in fig. 4-5, the free end surface of the driving member 14 is a circular arc surface, the free end surface of the driving member 14 is in smooth contact with the circular arc surface of the inner wall of the mounting cavity 502, and preferably, an included angle a between the circle center of the free end surface of each of the locking member 13 and the driving member 14 and a line connecting the circle center of the free end surface of the locking member and the circle center of the hinge shaft of the first optical axis section 2 is 75-85 °, an included angle B between a bisector of the included angle a and a diameter of a horizontal line of the first optical axis section 2 is 25-35 °, so that when the thread section 3 of the nozzle is screwed in or out for a short distance, the locking member 13 is rotated by a sufficient angle to play a role of sufficient pressing/releasing. In order to facilitate the rotation of the driving member 14 with the nozzle, the driving member 14 is a fan-shaped structure which is protruded towards the inner wall of the installation cavity 502, and the driving member 14 is also bent along the circumferential direction of the fan-shaped structure; the locking element 13 is also of a fan-shaped configuration and is curved in the circumferential direction of its fan-shaped configuration.

The foregoing embodiments are merely illustrative of the principles and utilities of the present invention and are not intended to limit the invention. Any person skilled in the art can modify or change the above-mentioned embodiments without departing from the spirit and scope of the present invention. Accordingly, it is intended that all equivalent modifications or changes which can be made by those skilled in the art without departing from the spirit and technical spirit of the present invention be covered by the claims of the present invention.

Claims

1. The utility model provides a blowing nozzle for motorcycle cylinder cap scarfing cinder which characterized in that: comprises a main body and a nozzle for communicating with a compressed air source, the nozzle is arranged in the main body, wherein

2. The blowing nozzle for removing slag from a cylinder cover of a motorcycle as claimed in claim 1, wherein: an annular deformation groove is formed in the inner wall of the drum-shaped hole section close to the wall of the cylindrical surface hole at the lower end of the through hole, and the cross section of the annular deformation groove is semicircular, so that when the pressing cylinder is hooped in the radial direction and the boss of the sealing gasket is used, the contact part of the boss and the first optical axis section can be bent inwards under the action of the annular deformation groove.

3. The blowing nozzle for removing slag from a cylinder cover of a motorcycle as claimed in claim 1, wherein: and one end of the inner cylindrical spring coaxially extends into the pipe wall of the sleeve, and the other end of the inner cylindrical spring is connected with the annular pad.

4. The blowing nozzle for removing slag from a cylinder cover of a motorcycle as claimed in claim 1, wherein: the free end face of the driving piece is an arc surface, the free end face of the driving piece is in smooth contact with the conical surface of the inner wall of the accommodating cavity, the included angle between the circle center of the free end face of each of the locking piece and the driving piece and the line between the circle centers of the hinged shafts of the first optical axis section is 75-85 degrees, and the included angle between the angular bisector of the included angle and the diameter of the first optical axis section crossing the horizontal line is 25-35 degrees.

5. The blowing nozzle for removing slag from a cylinder cover of a motorcycle as claimed in claim 1, wherein: the driving piece is of a fan-shaped structure protruding towards the inner wall of the placing cavity, and the driving piece is also bent along the circumferential direction of the fan-shaped structure; the locking piece is also of a fan-shaped structure and is bent along the circumferential direction of the fan-shaped structure.