CN109026354B

CN109026354B - Engine rotary valve

Info

Publication number: CN109026354B
Application number: CN201811118550.8A
Authority: CN
Inventors: 郑永刚; 洪文钊
Original assignee: GUANGZHOU LASER-DISCTECH Co Ltd
Current assignee: Guangzhou Radi Intelligent Manufacturing Technology Co ltd
Priority date: 2018-09-19
Filing date: 2018-09-19
Publication date: 2020-02-18
Anticipated expiration: 2038-09-19
Also published as: CN109026354A

Abstract

The invention provides an engine rotary valve which comprises a spline groove I, an air inlet, a disc body I, a disc body II, an air outlet, a spline groove II and a positioning pin, wherein the disc body I is brazed on the upper end surface of the disc body II, the air inlet is formed in the upper end surface of the disc body I, the air outlet is formed in the lower end surface of the disc body II, the spline groove I is formed in the middle of the upper end surface of the disc body I, the spline groove II is formed in the middle of the upper end surface of the disc body II, the spline groove II is overlapped with the spline groove I, and the positioning pin is arranged between the disc body I and the disc body II. The problem that the shape is complex and cannot be processed is solved through the design of the brazing structure, and the processing difficulty of the rotary valve is reduced.

Description

Engine rotary valve

Technical Field

The invention relates to an engine rotary valve, belonging to the technical field of engines.

Background

Valves are used in internal combustion engines to block fluid flow downstream along a passage to control a turbocharger. Rotary valves may be used in engine exhaust ports because of their ability to effectively seal the exhaust passage, allowing little fluid to flow downstream of the valve.

In the prior art, the rotary engine valve has the following difficulties: the shape is complex, five-axis CNC cannot be processed, and the product cannot be turned over; two surfaces of the part need to be processed and are difficult to align; the three curved holes are required to be consistent in shape and complex in structure; the requirement is high in hardness and density, the 3D printing cannot achieve the effect, holes are easy to appear, and the size is difficult to guarantee; the casting is easy to have sand holes, air holes and the like, and the density cannot be reached.

Disclosure of Invention

In view of the shortcomings of the prior art, it is an object of the present invention to provide a rotary engine valve that solves the problems set forth in the background above.

In order to achieve the purpose, the invention is realized by the following technical scheme: the utility model provides an engine rotary valve, includes spline groove one, air inlet, disk body one, disk body two, gas outlet, spline groove two and locating pin, disk body one brazes at two up end of disk body, the air inlet is seted up at disk body one up end, the gas outlet is seted up at two lower terminal surfaces of disk body, spline groove one is seted up at disk body one up end intermediate position, spline groove two is seted up at two up end intermediate position of disk body and spline groove two coincides mutually with spline groove one, the locating pin sets up between disk body one and disk body two.

Furthermore, three groups of positioning holes are formed in the upper end face of the second disc body, the three groups of positioning holes are annularly and equidistantly formed in the upper end face of the second disc body, and the positioning holes play a role in mounting and positioning finished products.

Further, air inlet and gas outlet all are provided with three groups, three groups the air inlet is annular equidistance and sets up at disk body up end, three groups the gas outlet is annular equidistance and sets up at two up end of disk body, when disk body one assembles with disk body two, utilizes the locating pin to realize the mutual location of disk body one and disk body two, then realizes the purpose of accurate location, reduces the probability that the deviation appears in air inlet and gas outlet position, has guaranteed the axiality of spline groove one and spline groove two simultaneously.

Furthermore, the first disc body and the second disc body are both members made of 2Cr13 materials, the hardness is HRC 40-45, and the density of the rotary valve is guaranteed by adopting 2Cr13 materials.

Furthermore, two sets of locating pins are installed and symmetrically fixed on the lower end face of the tray body, two sets of pin holes are symmetrically formed in the upper end face of the tray body, and when the tray body I and the tray body II are aligned, the two sets of locating pins are respectively inserted into the two sets of pin holes to complete convenient butt joint of the tray body I and the tray body II.

The invention has the beneficial effects that: according to the rotary engine valve, the spline groove I, the air inlet, the disc body I, the disc body II, the air outlet, the spline groove II, the positioning hole and the positioning pin are added, so that the problem that the shape is complex and cannot be machined is solved through the design of a brazing structure, and the machining difficulty of the rotary engine valve is reduced.

Drawings

Other features, objects and advantages of the invention will become more apparent upon reading of the detailed description of non-limiting embodiments with reference to the following drawings:

FIG. 1 is a schematic diagram of a rotary engine valve according to the present invention;

FIG. 2 is a schematic view of the assembly of a first disk and a second disk of a rotary valve for an engine according to the present invention;

FIG. 3 is a schematic cross-sectional view of a first disk and a second disk of a rotary engine valve of the present invention;

FIG. 4 is a schematic front view of a first plate of a rotary valve for an engine according to the present invention;

FIG. 5 is a schematic rear view of a second plate of a rotary valve for an engine according to the present invention;

FIG. 6 is a schematic view of the assembly of the pilot pin and the first plate of the rotary valve of the engine of the present invention;

FIG. 7 is a schematic illustration of the dimensions of a first disk and a second disk of a rotary engine valve in accordance with the present invention;

FIG. 8 is a schematic illustration of the dimensions of an air inlet in a rotary valve for an engine according to the present invention;

FIG. 9 is a schematic diagram of the dimensions of the outlet port in a rotary engine valve according to the present invention;

in the figure: 1-spline groove I, 2-air inlet, 3-disc I, 4-disc II, 5-air outlet, 6-spline groove II, 7-positioning hole and 8-positioning pin.

Detailed Description

In order to make the technical means, the creation characteristics, the achievement purposes and the effects of the invention easy to understand, the invention is further described with the specific embodiments.

Referring to fig. 1 to 9, the present invention provides a technical solution: the utility model provides an engine rotary valve, including spline groove one 1, the air inlet 2, disk body one 3, disk body two 4, the gas outlet 5, spline groove two 6 and locating pin 8, disk body one 3 brazes at disk body two 4 up end, air inlet 2 sets up at disk body one 3 up end, the terminal surface is seted up under disk body two 4 to gas outlet 5, spline groove one 1 is seted up at disk body one 3 up end intermediate position, spline groove two 6 is seted up at disk body two 4 up end intermediate position and spline groove two 6 coincides with spline groove one 1 mutually, locating pin 8 sets up between disk body one 3 and disk body two 4.

As an embodiment of the present invention: three groups of positioning holes 7 are formed in the upper end face of the second disc body 4, the three groups of positioning holes 7 are annularly and equidistantly formed in the upper end face of the second disc body 4, the positioning holes 7 achieve the purpose of mounting and positioning finished products, during actual processing, firstly, an air inlet 2 is processed on a first disk body 3, then an air outlet 5 is processed on a second disk body 4, the first disk body 3 is brazed on the upper end surface of the second disk body 4 by utilizing the vacuum brazing furnace technology, before brazing, the first disc body 3 and the second disc body 4 are positioned by the positioning pins 8, so that the alignment of the first disc body 3 and the second disc body 4 is completed, meanwhile, the spline grooves I1 and the spline grooves II 6 are overlapped, the air inlet 2 and the air outlet 5 are overlapped to form an S-shaped bent hole, and finally the disc body I3 and the disc body II 4 are fixed with each other through a brazing technology, so that the purpose of split machining is realized, the machining difficulty is reduced, the machining efficiency is improved, and traces cannot be seen through the brazing technology.

As an embodiment of the present invention: air inlet 2 and gas outlet 5 all are provided with three groups, three air inlets 2 of group are annular equidistance and offer at disk body 3 up end, three gas outlets 5 of group are annular equidistance and offer at disk body two 4 up end, when disk body 3 assembles with disk body two 4, utilize locating pin 8 to realize disk body 3 and disk body two 4's mutual location, then realize the purpose of accurate location, reduce the probability that deviation appears in

air inlet

2 and 5 positions of gas outlet, the axiality of spline groove 1 and spline groove two 6 has been guaranteed simultaneously.

As an embodiment of the present invention: the first disc body 3 and the second disc body 4 are both made of 2Cr13 materials, the hardness is HRC 40-45, and the density of the rotary valve is guaranteed by adopting 2Cr13 materials.

As an embodiment of the present invention: two sets of locating pins 8 are installed, two sets of locating pins 8 are symmetrically fixed on the lower end face of the first disk body 3, two sets of pin holes are symmetrically formed in the upper end face of the second disk body 4, and when the first disk body 3 and the second disk body 4 are aligned, the two sets of locating pins 8 are respectively inserted into the two sets of pin holes to complete convenient butt joint of the first disk body 3 and the second disk body 4.

While there have been shown and described what are at present considered the fundamental principles and essential features of the invention and its advantages, it will be apparent to those skilled in the art that the invention is not limited to the details of the foregoing exemplary embodiments, but is capable of other specific forms without departing from the spirit or essential characteristics thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein.

Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.

Claims

1. The utility model provides an engine rotary valve, includes spline groove one (1), air inlet (2), disk body one (3), disk body two (4), gas outlet (5), spline groove two (6) and locating pin (8), its characterized in that: the first disk body (3) is brazed on the upper end face of the second disk body (4), the air inlet (2) is formed in the upper end face of the first disk body (3), the air outlet (5) is formed in the lower end face of the second disk body (4), the spline groove I (1) is formed in the middle of the upper end face of the first disk body (3), the spline groove II (6) is formed in the middle of the upper end face of the second disk body (4), the spline groove II (6) is overlapped with the spline groove I (1), and the positioning pin (8) is arranged between the first disk body (3) and the second disk body (4); three groups of positioning holes (7) are formed in the upper end face of the second disc body (4), the three groups of positioning holes (7) are annularly and equidistantly formed in the upper end face of the second disc body (4), the positioning holes (7) achieve the purpose of mounting and positioning a finished product, in actual processing, firstly, an air inlet (2) is processed in the first disc body (3), then, an air outlet (5) is processed in the second disc body (4), the first disc body (3) is brazed on the upper end face of the second disc body (4) through a vacuum brazing furnace technology, before brazing, the first disc body (3) and the second disc body (4) are positioned through a positioning pin (8), so that the first disc body (3) and the second disc body (4) are aligned, meanwhile, the first spline groove (1) and the second spline groove (6) are superposed, an S-shaped bent hole is formed after the air inlet (2) and the air outlet (5) are superposed, and finally, the first disc body (3) and, the aim of split machining is fulfilled, the machining difficulty is reduced, the machining efficiency is improved, and no trace can be seen by adopting the brazing technology; air inlet (2) and gas outlet (5) all are provided with three groups, three groups air inlet (2) are annular equidistance and offer at disk body (3) up end, three groups gas outlet (5) are annular equidistance and offer at disk body two (4) up end, when disk body (3) and disk body two (4) equipment, utilize locating pin (8) to realize the mutual location of disk body (3) and disk body two (4), realize the purpose of accurate location then, reduce the probability that deviation appears in air inlet (2) and gas outlet (5) position, guaranteed the axiality of spline groove (1) and spline groove (6) simultaneously.

2. A rotary engine valve as claimed in claim 1, wherein: the first disc body (3) and the second disc body (4) are both members made of 2Cr13 materials, the hardness is HRC 40-45, and the density of the rotary valve is guaranteed by adopting 2Cr13 materials.

3. A rotary engine valve as claimed in claim 1, wherein: two sets of are installed to locating pin (8) two sets of terminal surface under disk body (3) is fixed to locating pin (8) symmetry, two sets of pinholes have been seted up to disk body two (4) up end symmetry, and when disk body (3) and disk body two (4) align, with two sets of locating pins (8) insert respectively in two sets of pinholes, accomplish the convenient butt joint of disk body (3) and disk body two (4).