CN214403908U

CN214403908U - Compressor crankcase breather valve

Info

Publication number: CN214403908U
Application number: CN202120477245.9U
Authority: CN
Inventors: 石锋
Original assignee: Nanjing Wanjie Mechanical And Electronic Complete Equipment Co ltd
Current assignee: Nanjing Wanjie Mechanical And Electronic Complete Equipment Co ltd
Priority date: 2021-03-04
Filing date: 2021-03-04
Publication date: 2021-10-15
Anticipated expiration: 2031-03-04

Abstract

The utility model provides a compressor crankcase breather valve belongs to the engine field. The compressor crankcase breather valve comprises a breather structure, a sealing structure and a buffering structure. The upper end of the valve cap is provided with an exhaust port. The valve plate covers the upper surface of the vent at the lower end of the valve cap. The baffle ring penetrates through the first baffle plate in a sliding manner, and the lower end of the baffle ring covers right above a circular through groove formed in the surface of the second baffle plate; the gas entering the inner cavity of the valve seat passes through the circular through groove formed in the surface of the second baffle plate, lubricating oil in the gas collides with the inner wall of the baffle ring, falls down and flows back to the crankcase, the first baffle plates are arranged right above the second baffle plates at intervals, the gas continuously passes through the surface of the first baffle plates and is provided with vent holes, and the residual lubricating oil in the gas collides with the surface of the valve plate again and flows back to the crankcase, so that multiple buffering oil saving is realized, the lubricating oil consumption is reduced, the equipment maintenance period is prolonged, and the maintenance cost is reduced.

Description

Compressor crankcase breather valve

Technical Field

The utility model relates to an engine field particularly, relates to a compressor crankcase breather valve.

Background

At present, in the reciprocating process of a piston compressor, the volume inside a crankcase of the piston compressor changes along with the movement of a piston, and meanwhile, a trace amount of compressed gas leaks into the crankcase, so that the pressure in the crankcase is greater than the atmospheric pressure. In order to keep the gas pressure in the crankcase at normal pressure (because the crankcase is not pressurized when the compressor works normally), a breather valve (also called breather valve) must be arranged, and the breather device of the multi-cylinder internal combustion engine with the air intake system and the air intake system with the air throttle is used for connecting the crankcase and the air intake pipe in front of the air throttle (and in front of the supercharger when the supercharger is arranged);

the breather device of the throttle multi-cylinder internal combustion engine keeps the internal air pressure balance by exhausting the air in the crankcase, but simultaneously exhausts the internal gaseous lubricating oil, thereby increasing the consumption of the lubricating oil of the internal combustion engine.

SUMMERY OF THE UTILITY MODEL

In order to make up for above not enough, the utility model provides a compressor crankcase breather valve aims at improving the problem that the gas outgoing leads to the consumption increase of the lubricating oil of internal-combustion engine in the crankcase.

The utility model discloses a realize like this:

the utility model provides a compressor crankcase breather valve, including ventilation structure, seal structure and buffer structure.

The ventilation structure comprises a valve seat and a valve cap, a ventilation opening at the lower end of the valve cap is communicated and fixed with the upper end of the valve seat, and a ventilation opening is formed in the upper end of the valve cap.

The sealing structure comprises a valve plate and an elastic reset piece, the elastic reset piece is connected with the valve plate, and the valve plate covers the upper surface of the vent at the lower end of the valve cap.

Buffer structure includes fender ring, first separation blade and second separation blade, first separation blade interval sets up directly over the second separation blade, first separation blade and second separation blade are fixed to be set up the disk seat upper end, the air vent has been seted up on first separation blade surface, keep off the ring and slide and run through first separation blade, keep off the ring lower extreme cover in directly over the circular logical groove that second separation blade surface was seted up, keep off the ring upper end with valve block fixed connection.

The utility model discloses an in one embodiment, the external screw thread has been seted up to disk seat lower extreme surface, the disk seat passes through the external screw thread and links to each other with the crankcase, the valve cap lower extreme passes through the fix with screw port on the disk seat, the valve cap with the disk seat junction is provided with the sealing washer.

The utility model discloses an in one embodiment, the valve block sets up in the valve cap, valve cap inner wall inclination sets up, the valve block edge be provided with the parallel annular side area arch of valve cap inner wall.

The utility model discloses an in one embodiment, the valve block cover in first separation blade upper surface, first separation blade surface has been seted up the air vent annular and has been provided with a plurality of, and the air vent slope inwards sets up.

The utility model discloses an in one embodiment, elasticity resets and includes sleeve pipe and slide bar, the one end of slide bar with sleeve pipe sliding connection, the slide bar with be connected with the pressure spring between the sleeve pipe, the slide bar upper end with valve block fixed connection.

The utility model discloses an in the embodiment, the slip joint has the stopper in the sleeve pipe, the slide bar lower extreme with stopper fixed connection.

The utility model discloses an in an embodiment, the one end of pressure spring with sleeve pipe fixed connection, the other end of pressure spring with stopper fixed connection, sleeve pipe outer wall fixedly connected with connecting rod, the one end of connecting rod with disk seat fixed connection.

In an embodiment of the present invention, the retaining ring and the circular through groove provided on the second retaining surface are coaxially disposed, and the retaining ring diameter is larger than the circular through groove diameter provided on the second retaining surface.

The utility model discloses an in one embodiment, still including filtration, filtration sets up the gas vent upper surface that the valve cap upper end was seted up, and the gas vent upper surface is provided with sealed the pad.

In an embodiment of the present invention, the filtering structure includes a conical filtering plate and a mounting plate, the conical filtering plate is fixedly connected to the mounting plate, and the mounting plate is clamped and fixed to the top of the valve cap.

The utility model has the advantages that: the utility model discloses a compressor crankcase breather valve that obtains through above-mentioned design, during the use, valve cap lower extreme blow vent and disk seat upper end intercommunication are fixed, after the gas through the crankcase passes through the breather valve takeover and gets into the disk seat inner chamber, the gas pressure of disk seat inner chamber increases, atmospheric pressure promotes to cover and shifts up the valve block that covers on valve cap lower extreme blow vent upper surface, produce the clearance between valve block and the valve cap inner wall and supply outside the gas discharge valve, drive the elasticity piece that resets that is connected with the valve block simultaneously, when the gas pressure of disk seat inner chamber is less than the elasticity of elasticity piece that resets, the valve block resets and seals valve cap lower extreme blow vent, and can guarantee that the reverse pressure is big when not leaking gas; the gas entering the inner cavity of the valve seat passes through the circular through groove formed in the surface of the second baffle plate, lubricating oil in the gas collides with the inner wall of the baffle ring, falls down and flows back to the crankcase, the first baffle plates are arranged right above the second baffle plates at intervals, the gas continuously passes through the surface of the first baffle plates and is provided with vent holes, and the residual lubricating oil in the gas collides with the surface of the valve plate again and flows back to the crankcase, so that multiple buffering oil saving is realized, the lubricating oil consumption is reduced, the equipment maintenance period is prolonged, and the maintenance cost is reduced.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention, and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.

Fig. 1 is a schematic view of a front view cut-open structure provided by an embodiment of the present invention;

fig. 2 is a schematic structural view of an elastic restoring member according to an embodiment of the present invention;

fig. 3 is a schematic diagram of a filtering structure provided in an embodiment of the present invention;

fig. 4 is a schematic structural view of a first blocking piece according to an embodiment of the present invention;

fig. 5 is a schematic structural view of a second barrier according to an embodiment of the present invention;

fig. 6 is a schematic view of a retainer ring structure according to an embodiment of the present invention.

In the figure: 100. a venting structure; 110. a valve seat; 130. a bonnet; 300. a sealing structure; 310. a valve plate; 330. an elastic reset member; 331. a sleeve; 333. a slide bar; 335. a pressure spring; 337. a limiting block; 339. a connecting rod; 500. a buffer structure; 510. a baffle ring; 530. a first baffle plate; 550. a second baffle plate; 700. a filter structure; 710. a conical filter plate; 730. mounting a plate; 750. and a gasket.

Detailed Description

To make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the drawings of the embodiments of the present invention are combined to clearly and completely describe the technical solutions of the embodiments of the present invention, and obviously, the described embodiments are some embodiments of the present invention, not all embodiments. Based on the utility model provides a. Embodiments, all other embodiments obtained by a person skilled in the art without any inventive step are within the scope of the present invention.

Thus, the following detailed description of the embodiments of the present invention, presented in the accompanying drawings, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and to simplify the description, but do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the present invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically limited otherwise.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally formed; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

In the present disclosure, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may comprise direct contact between the first and second features, or may comprise contact between the first and second features not directly. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.

Examples

Referring to fig. 1-6, the present invention provides a technical solution: a compressor crankcase breather valve includes a breather structure 100, a seal structure 300, and a cushion structure 500.

The sealing structure 300 is disposed at one end of the ventilation structure 100 and is used for opening and closing the ventilation structure 100, and the buffer structure 500 has a buffer effect on gas passing through the ventilation structure 100, so that lubricating oil in the gas flows back to the crankcase.

Referring to fig. 1-3, the vent structure 100 includes a valve seat 110 and a bonnet 130, a vent hole at a lower end of the bonnet 130 is fixedly communicated with an upper end of the valve seat 110, and an exhaust port is formed at an upper end of the bonnet 130;

in this embodiment, an external thread is formed on the outer surface of the lower end of the valve seat 110, the valve seat 110 is connected with the crankcase through the external thread, the lower end of the bonnet 130 is fixed to an upper port of the valve seat 110 through a screw, and a sealing ring is arranged at the connection position of the bonnet 130 and the valve seat 110;

in some embodiments, a filter structure 700 is further included, the filter structure 700 is disposed on an upper surface of the exhaust opening formed at the upper end of the bonnet 130, and a gasket 750 is disposed on the upper surface of the exhaust opening.

It should be noted that the filter structure 700 includes a conical filter plate 710 and a mounting plate 730, the conical filter plate 710 is fixedly connected to the mounting plate 730, and the mounting plate 730 is snap-fitted on the top of the bonnet 130.

Referring to fig. 1-2, the sealing structure 300 includes a valve plate 310 and an elastic restoring member 330, the elastic restoring member 330 is connected to the valve plate 310, and the valve plate 310 covers the upper surface of the vent hole at the lower end of the bonnet 130;

in the embodiment, the valve plate 310 is arranged in the bonnet 130, the inner wall of the bonnet 130 is inclined, and the edge of the valve plate 310 is provided with an annular side belt bulge parallel to the inner wall of the bonnet 130;

it should be noted that the elastic reset member 330 includes a sleeve 331 and a sliding rod 333, one end of the sliding rod 333 is slidably connected to the sleeve 331, a pressure spring 335 is connected between the sliding rod 333 and the sleeve 331, and the upper end of the sliding rod 333 is fixedly connected to the valve plate 310; wherein, the sleeve 331 slides in the joint and has a stopper 337, and the lower extreme of slide bar 333 is fixedly connected with stopper 337.

In some embodiments, one end of the compressed spring 335 is fixedly connected to the sleeve 331, the other end of the compressed spring 335 is fixedly connected to the limiting block 337, the outer wall of the sleeve 331 is fixedly connected to the connecting rod 339, and one end of the connecting rod 339 is fixedly connected to the valve seat 110.

Referring to fig. 4-6, the buffer structure 500 includes a blocking ring 510, a first blocking piece 530 and a second blocking piece 550, the first blocking piece 530 is disposed over the second blocking piece 550 at an interval, the first blocking piece 530 and the second blocking piece 550 are fixedly disposed at the upper end of the valve seat 110, a vent hole is disposed on the surface of the first blocking piece 530, the blocking ring 510 slidably penetrates through the first blocking piece 530, the lower end of the blocking ring 510 covers over a circular through groove disposed on the surface of the second blocking piece 550, and the upper end of the blocking ring 510 is fixedly connected to the valve plate 310.

In some embodiments, the valve plate 310 covers the upper surface of the first blocking piece 530, and a plurality of vent holes are annularly formed on the surface of the first blocking piece 530, and the vent holes are obliquely and inwardly arranged.

In this embodiment, the baffle ring 510 is disposed coaxially with the circular through groove formed on the surface of the second barrier 550, and the diameter of the baffle ring 510 is greater than the diameter of the circular through groove formed on the surface of the second barrier 550.

The working principle of the crankcase breather valve of the compressor is as follows: when the valve cap is used, the vent at the lower end of the valve cap 130 is communicated and fixed with the upper end of the valve seat 110, after gas passing through a crankcase enters the inner cavity of the valve seat 110 through the vent valve connecting pipe, the gas pressure in the inner cavity of the valve seat 110 is increased, the valve plate 310 covering the upper surface of the vent at the lower end of the valve cap 130 is pushed by air pressure to move upwards, a gap is generated between the valve plate 310 and the inner wall of the valve cap 130 for gas to be discharged out of the valve, meanwhile, the elastic resetting piece 330 connected with the valve plate 310 is driven, when the gas pressure in the inner cavity of the valve seat 110 is smaller than the elastic force of the elastic resetting piece 330, the valve plate 310 is reset to seal the vent at the lower end of the valve cap 130, and gas leakage can be ensured when the reverse pressure is large; the gas entering the inner cavity of the valve seat 110 passes through the circular through groove formed in the surface of the second baffle plate 550, the lubricating oil in the gas falls down after colliding with the inner wall of the baffle ring 510 and then flows back into the crankcase, the first baffle plates 530 are arranged right above the second baffle plate 550 at intervals, the gas continuously passes through the surfaces of the first baffle plates 530 and is provided with vent holes, and the residual lubricating oil in the gas collides with the surface of the valve plate 310 again and then flows back into the crankcase, so that multiple buffering oil saving is realized, the lubricating oil consumption is reduced, the equipment maintenance period is prolonged, and the maintenance cost is reduced.

It should be noted that the specific model specifications of the pressure spring 335 and the conical filter plate 710 need to be determined by model selection according to the actual specification of the device, and the specific model selection calculation method adopts the prior art, so detailed description is omitted.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A breather valve of a crankcase of a compressor is characterized by comprising

The vent structure (100) comprises a valve seat (110) and a valve cap (130), a vent at the lower end of the valve cap (130) is communicated and fixed with the upper end of the valve seat (110), and a vent is formed at the upper end of the valve cap (130);

the sealing structure (300) comprises a valve plate (310) and an elastic resetting piece (330), the elastic resetting piece (330) is connected with the valve plate (310), and the valve plate (310) covers the upper surface of a vent at the lower end of the valve cap (130);

buffer structure (500), buffer structure (500) is including keeping off ring (510), first separation blade (530) and second separation blade (550), first separation blade (530) interval sets up directly over second separation blade (550), first separation blade (530) and second separation blade (550) are fixed to be set up disk seat (110) upper end, the air vent has been seted up on first separation blade (530) surface, keep off ring (510) and slide and run through first separation blade (530), keep off ring (510) lower extreme cover directly over the circular logical groove that second separation blade (550) surface was seted up, keep off ring (510) upper end with valve block (310) fixed connection.

2. The compressor crankcase breather valve according to claim 1, wherein the outer surface of the lower end of the valve seat (110) is externally threaded, the valve seat (110) is connected with a crankcase through the external threads, the lower end of the valve cap (130) is fixed to an upper port of the valve seat (110) through a screw, and a sealing ring is arranged at the joint of the valve cap (130) and the valve seat (110).

3. The compressor crankcase breather valve according to claim 1, wherein the valve plate (310) is disposed in the valve bonnet (130), the inner wall of the valve bonnet (130) is inclined to be disposed, and the edge of the valve plate (310) is provided with an annular side belt projection parallel to the inner wall of the valve bonnet (130).

4. The compressor crankcase breather valve according to claim 1, wherein the valve plate (310) covers an upper surface of the first blocking piece (530), a plurality of vent holes are annularly formed in the surface of the first blocking piece (530), and the vent holes are obliquely and inwardly formed.

5. The compressor crankcase ventilation valve according to claim 1, wherein the elastic reset member (330) comprises a sleeve (331) and a sliding rod (333), one end of the sliding rod (333) is slidably connected with the sleeve (331), a compression spring (335) is connected between the sliding rod (333) and the sleeve (331), and the upper end of the sliding rod (333) is fixedly connected with the valve plate (310).

6. The compressor crankcase breather valve according to claim 5, wherein a limit block (337) is slidably engaged in the sleeve (331), and a lower end of the sliding rod (333) is fixedly connected to the limit block (337).

7. The compressor crankcase ventilation valve according to claim 6, wherein one end of the compression spring (335) is fixedly connected to the sleeve (331), the other end of the compression spring (335) is fixedly connected to the stopper (337), a connecting rod (339) is fixedly connected to the outer wall of the sleeve (331), and one end of the connecting rod (339) is fixedly connected to the valve seat (110).

8. The compressor crankcase breather valve of claim 1, wherein the baffle ring (510) is coaxially disposed with a circular through slot formed in a surface of the second baffle (550), and the diameter of the baffle ring (510) is greater than the diameter of the circular through slot formed in the surface of the second baffle (550).

9. The compressor crankcase breather valve according to claim 1, further comprising a filter structure (700), wherein the filter structure (700) is disposed on an upper surface of a vent opening formed at the upper end of the valve cap (130), and a gasket (750) is disposed on the upper surface of the vent opening.

10. The compressor crankcase breather valve of claim 9, wherein the filter structure (700) includes a conical filter plate (710) and a mounting plate (730), the conical filter plate (710) is fixedly connected to the mounting plate (730), and the mounting plate (730) is snap-fitted to the top of the valve cap (130).