CN218542548U

CN218542548U - In-line three-cylinder integrated one-way valve plate of air compressor

Info

Publication number: CN218542548U
Application number: CN202223024012.7U
Authority: CN
Inventors: 苏瑞; 苏同富
Original assignee: Rizhao Weisudun Machinery Technology Co ltd
Current assignee: Rizhao Weisudun Machinery Technology Co ltd
Priority date: 2022-08-09
Filing date: 2022-08-09
Publication date: 2023-02-28
Anticipated expiration: 2032-08-09
Also published as: CN218376811U; CN218542547U

Abstract

The utility model belongs to the technical field of air compressor, in particular to in-line three-cylinder integral type air compressor check valve plate, including the valve plate that is the integral type structure, the valve plate on be provided with the three check valves that are the inline that match respectively with the cylinder cap chamber, every check valve of group divide into with the corresponding check valve that admits air of chamber and with the corresponding exhaust check valve of cylinder cap chamber exhaust chamber. The beneficial effects of the utility model are that, adopt the whole machine-shaping of integral type, will admit air, exhaust, cooling, function such as crankcase is ventilated and concentrate as an organic whole, rationally distributed, compact structure has powerful, and is small, manufacturing process is simple, workable, with low costs, not fragile, the maintenance is simple, does work the equilibrium, operates steadily, compression efficiency is high, energy-concerving and environment-protective.

Description

In-line three-cylinder integrated one-way valve plate of air compressor

The application is a divisional application of a cylinder cover, a one-way valve plate, a gasket and a compressor of an in-line three-cylinder integrated air compressor. The original application date is 2022, 8 and 9, and the application number is 202222077125.7.

Technical Field

The utility model belongs to the technical field of air compressor, in particular to in-line three-cylinder integrated air compressor cylinder cap, check valve plate, gasket and compressor.

Background

Each cylinder body of the traditional piston type air compressor is independent, the corresponding cylinder covers are also independent, generally, after two or three cylinder bodies and two or three cylinder covers of one traditional air compressor are respectively assembled and installed, the air compressor is distributed within 140 degrees, if the pump heads of the two-cylinder air compressor are distributed in a V shape, the pump heads of the three-cylinder air compressor are distributed in a W shape, the rest 220 degrees are vacant positions, so that the operation of a crankshaft is unbalanced, serious vibration is generated, the highest rotating speed per minute can only reach 960 revolutions, the efficiency is low, energy is wasted, and the environment is polluted. Therefore, the invention of an air compressor with smooth operation, high rotating speed and high efficiency is urgently needed.

The invention discloses a piston type air compressor (ZL 2007 2 0026433. X), which provides an air compressor with a three-connecting-rod crankshaft with an included angle of 120 degrees and a three-cylinder body in linear arrangement, but the air compressor is combined by an independent cylinder cover and an independent one-way valve plate of each cylinder and is respectively matched with an in-line three-cylinder body, so that the integral structure is complex, the durability is poor, the assembly process requirement is high, the integral layout is unreasonable, the manufacturing difficulty is increased, the production efficiency is influenced, the maintenance difficulty is increased, the manufacturing cost is increased, and the using effect of the air compressor is influenced.

Disclosure of Invention

An object of the utility model is to provide a novel piston air compressor cylinder cap, check valve plate, gasket and compressor to solve its performance low, spare part is too much, overall structure is complicated, the overall arrangement is unreasonable, the unstable performance, the durability is poor, production technology is complicated, the assembly precision is too high and complicated, the assembly flow is strict, the maintenance technical requirement is high, the maintenance degree of difficulty is big etc. technical problem.

The utility model is realized by the following measures

A cylinder cover of an in-line three-cylinder integrated air compressor comprises a cover body which is matched with a cylinder body and is of an integrated structure, wherein three groups of cylinder cover cavities which are linearly arranged and are matched with the cylinder body and are inwards sunken are arranged on the bottom surface of the cover body; the middle part of the cylinder cover cavity is divided into an air inlet cavity and an air exhaust cavity by a partition plate, the three air inlet cavities are communicated with an air inlet channel, and the three air exhaust cavities are communicated with an air exhaust channel.

The cylinder cover of the inline three-cylinder integrated air compressor is preferably as follows: the air inlet channel is positioned on one side in the cover body, one end of the air inlet channel is opened outwards, and the other end of the air inlet channel is communicated with the three air inlet cavities; the exhaust channel is positioned at the other side of the inner part of the cover body, one end of the exhaust channel is opened outwards, and the other end of the exhaust channel is communicated with the three exhaust cavities.

The cylinder cover of the inline three-cylinder integrated air compressor is preferably as follows: the air inlet and exhaust manifold is provided with three air ducts and is respectively communicated with the three air inlet cavities and the three exhaust cavities.

The cylinder cover of the inline three-cylinder integrated air compressor is preferably as follows: the cover body is cuboid, the horizontal cross section of the cylinder cover cavity is circular, and the horizontal cross sections of the air inlet cavity and the air exhaust cavity are semicircular.

The cylinder cover of the inline three-cylinder integrated air compressor is preferably as follows: the upper part of the cover body is provided with an internal circulation water cooling cavity, the periphery of the cover body is provided with a plurality of internal circulation water cooling channels, the internal circulation water cooling channels are communicated with the water cooling channels of the cylinder body, two ends of each internal circulation water cooling channel are respectively connected with an external water inlet channel and an external water outlet channel, the four corners and two sides of the cover body are provided with 8 cylinder cover assembly bolt holes, and the outer side of one corner assembly bolt hole of the cylinder cover is provided with a crankcase vent hole; the internal circulation water cooling channel and the assembly bolt hole are both positioned between the cylinder cover cavity and the air inlet channel or the exhaust channel.

This patent still discloses an in-line three jar integral type air compressor check valve plate, including the valve plate that is the integral type structure, the valve plate on be provided with the three check valves that are the inline that match respectively with the cylinder cap chamber, every check valve of group divide into with admit air the corresponding check valve that admits air in chamber and with the corresponding exhaust check valve in cylinder cap chamber exhaust chamber.

The check valve plate of the inline three-cylinder integrated air compressor is preferably as follows: the four corners and both sides of valve plate are provided with 8 valve plate assembly bolt holes altogether, the periphery of valve plate is provided with a plurality of valve plate internal circulation water-cooling passageways, the valve plate is provided with corresponding one, two or four valve plate crankcase air vents on the two corners that are close to one end or are close to both ends, and valve plate crankcase air vent is located the outside that corresponds valve plate assembly bolt hole.

The check valve plate of the inline three-cylinder integrated air compressor is preferably as follows: the valve plate and the one-way valve adopt any one of the following schemes,

scheme A: the valve plate is a first valve plate which is overlapped face to face, and the one-way valve comprises a first one-way valve hole and two one-way valve plates which are positioned on the first one-way valve hole;

scheme B: the valve plate is a second valve plate provided with an air inlet valve plate and an air outlet valve plate, and the one-way valve comprises a second one-way valve hole, an air inlet one-way valve plate corresponding to the air inlet cavity, an air outlet one-way valve plate corresponding to the air outlet cavity and a valve plate limiting piece;

scheme C: the valve plate comprises a valve plate III provided with an air inlet and outlet valve assembly, the one-way valve comprises an air inlet and outlet valve assembly, and the air inlet and outlet valve assembly is a spring combined one-way valve.

The patent also discloses an in-line three-cylinder integrated air compressor gasket which is a gasket with an integrated structure, three gasket air holes which are linearly arranged and are respectively matched with a cylinder cover cavity are arranged on the gasket, and the gasket air holes are divided into air inlets matched with the air inlet cavity and air outlet holes matched with the air outlet cavity by a gasket spacing beam; the gasket is characterized in that 8 gasket assembling bolt holes are formed in the four corners and two sides of the gasket, a plurality of internal circulation water-cooling channel holes are formed in the periphery of the gasket, and one, two or four corresponding gasket crankcase vent holes are formed in one corner, two corners or four corners close to two ends of the gasket.

The patent also discloses an in-line three-cylinder integrated air compressor, which consists of the cylinder cover of the in-line three-cylinder integrated air compressor, a one-way valve plate of the in-line three-cylinder integrated air compressor, a gasket of the in-line three-cylinder integrated air compressor and an in-line three-cylinder compressor body.

This patent is to accomplishing the carminative piston air compressor of once compression every 120 degrees and innovatively forming with crankshaft a week 360 degrees duty cycle on average, because balanced cubic compression is discharged, stop the overweight, do not produce resonance, realize balanced compression and discharge, make the operation more steady smooth, the highest rotational speed in the safe range, per minute can reach 9000 revolutions, be more than three times of traditional piston air compressor efficiency, under so high efficiency, energy saving and emission reduction's effect has still really been accomplished, the energy efficiency ratio has obtained promoting by a wide margin, practical spreading value has.

The utility model discloses a check valve plate, if only be provided with the crankcase air vent on a corner, go up the board and must be the board of two kinds of structures with lower valve plate, divide into A, B board industrially. If two crank case vent holes are arranged on two corners close to one end, the plates A and B are not needed, the upper valve plate and the lower valve plate are universal, but the directions of the valve plates need to be adjusted during production, assembly and maintenance.

The utility model discloses a check valve plate if reserve four crankcase air vents in the four corners, just can not divide A, B board, realized that the upper and lower valve plate is general, also need not the direction of rotation during the production assembly, be favorable to the installation more.

The utility model discloses a one-way valve plate has reserved the reserve internal circulation water-cooling passageway hole of a plurality of. If the one-way valve plate with double valve plates is adopted, the universal use of the upper plate and the lower plate is realized, and the one-way valve plate can be horizontally rotated by 180 degrees for installation, namely, blind installation is realized during installation. If the one-way valve plate with the single valve plate is adopted, the one-way valve plate can still be installed in a rotating mode for 180 degrees, the problem that the air compressor is used on different equipment and in different scenes is solved, the air inlet and exhaust direction of the air compressor can be adjusted by 180 degrees, a user can adjust the air inlet and exhaust direction of the air compressor according to the scenes and the needs of matched equipment, and an optimal installation scheme is provided for the user.

The beneficial effects of the utility model are that, adopt the whole machine-shaping of integral type, will admit air, exhaust, cooling, function such as crankcase is ventilated and concentrate as an organic whole, rationally distributed, compact structure has powerful, and is small, manufacturing process is simple, workable, with low costs, not fragile, the maintenance is simple, does work the equilibrium, operates steadily, compression efficiency is high, energy-concerving and environment-protective.

Drawings

FIG. 1 is a schematic perspective view of a cylinder head according to this embodiment 1

FIG. 2 is a perspective view of the bottom view of FIG. 1

FIG. 3 is a schematic view of the lower cross-sectional top structure of FIG. 1

FIG. 4 is a schematic top view of an in-line three-cylinder integrated air compressor head with external intake and exhaust passages, i.e., external intake and exhaust manifolds

FIG. 5 is a schematic sectional view of the internal circulation water-cooling cavity in FIG. 1

FIG. 6 is a schematic top view of the internal circulation water cooling cavity and the water circulation channel of FIG. 1

FIG. 7 is a schematic top view of the structure of FIG. 1

FIG. 8 is scheme A of example 1: air inlet and exhaust one-way valve plate assembly of double-plate combined elastic sheet in-line three-cylinder integrated air compressor

FIG. 9 is scheme B of example 1: single-plate combined elastic sheet in-line three-cylinder integrated air compressor air inlet and exhaust one-way valve plate assembly drawing

FIG. 10 is scheme C of example 1: air inlet and exhaust one-way valve plate assembly diagram of in-line three-cylinder integrated air compressor with air inlet and exhaust valve assemblies mounted on single plate

FIG. 11 is scheme A of example 1: single valve plate in air inlet and exhaust one-way valve plate group of double-plate combined elastic sheet in-line three-cylinder integrated air compressor

FIG. 12 is a diagram of an in-line three cylinder integrated air compressor shim

FIG. 13 is a crankshaft diagram of an in-line three cylinder air compressor

FIG. 14 is a schematic view of an assembly of pump head assemblies of an inline three cylinder air compressor

FIG. 15 is a longitudinal cross-sectional view of an in-line three cylinder air compressor

FIG. 16 is a diagram of an in-line three cylinder air compressor.

In the figure, 1 cover body, 2 partition plates, 3 air inlet cavities, 4 air outlet cavities, 5 air inlet channels, 6 air outlet channels, 7 air inlet and outlet manifolds, 8 internal circulation water cooling cavities, 9 internal circulation water cooling channels, 10 cylinder cover fastening bolt holes, 11 crankcase vent holes, 12 valve plate I, 13 one-way valves, 14 air inlet and outlet valve plates, 15 valve plate II, 16 air inlet one-way valve plates, 17 air outlet one-way valve plates, 18 valve plate limiting plates, 19 air inlet and outlet valve components, 20 valve plate III, 21 valve plate assembling bolt holes, 22 valve plate internal circulation water cooling channels, 23 valve plate crankcase vent holes, 24 gaskets, 25 gasket vent holes, 26 gasket assembling bolt holes, 27 gasket crankcase vent holes, 28 compressor crankshafts, 29 air inlet channel interfaces, 30 cylinder block cushions, 31 forced circulation cooling water pumps, 32 heat dissipation fans, 33 cylinder blocks, 34 engine oil filter cores, 35 oil bottom shells, 36 power parts, 37, 38 pistons, 39 connecting rods, 40 external air inlet and outlet manifold type cover bodies, 41 assemblies, 42 gasket spacing cross beams, 43 one-way valve hole II, 43 one-way valve hole one-way valve holes, and 45 gasket water cooling channel holes.

Detailed Description

Example 1

The embodiment is a cylinder cover of a piston type in-line three-cylinder integrated air compressor, and adopts a cylinder cover with an air inlet passage and an air exhaust passage arranged inside and an internal circulation water cooling mode.

The specific structure is shown in fig. 1, the cover body (1) is cuboid, and the length, the width and the height are respectively 250 mm, 182 mm and 63mm.

As shown in fig. 2-3, the lower part of the cover body is provided with three cylinder cover cavities (the air inlet cavity (3) and the air outlet cavity (4) jointly form a cylinder cover cavity) which are linearly arranged and matched with the in-line three-cylinder body (33), the diameter of the cylinder cover cavity is 68mm, and the depth of the cylinder cover cavity is 20-32 mm. The cover body is also provided with an air inlet channel (5) and an air outlet channel (6) which are respectively positioned at two sides in the cover body. The middle part of the cylinder cover cavity is divided into an air inlet cavity (3) and an air exhaust cavity (4) by a partition plate (2), the three air inlet cavities (3) are communicated with an air inlet channel (5), and the three air exhaust cavities (4) are communicated with an air exhaust channel (6). One end of the air inlet channel (5) is opened outwards, and the other end of the air inlet channel is communicated with the three air inlet cavities (3); one end of the exhaust channel (6) is opened outwards, and the other end is communicated with the three exhaust cavities (4).

The four corners and two sides of the cover body are provided with 8 cylinder cover assembly bolt holes (10), and the outer side of one corner of the cylinder cover assembly bolt hole (10) is provided with a crankcase vent hole (11).

As shown in fig. 5-7, the cooling of this patent is performed by internal circulation cooling. The upper portion of lid (1) is provided with internal circulation water-cooling chamber (8), and the periphery is provided with 14 internal circulation water-cooling passageways (9), the water-cooling passageway of internal circulation water-cooling passageway and cylinder block be linked together, external inlet channel and the passageway of going out are connected respectively to the both ends of internal circulation water-cooling passageway.

As shown in figure 8, the double-plate type one-way air intake and exhaust valve plate (solution A) comprises two valve plates I (12) which are respectively positioned at the upper part and the lower part (note that the upper valve plate and the lower valve plate can be used in the same way and can be used in common), and six elastic valve plates (14) between the two valve plates I (12), wherein the elastic valve plates (14) are embedded in a groove with a radian between the two valve plates I (12) to form an elastic sheet type one-way combined valve plate. The two valve plates I (12) are provided with three groups of check valves (13) which are respectively matched with the three cylinder cover cavities and are arranged in a straight line, the check valve plates are elastic sheet type check valve plates, and each group of check valves (13) is divided into an air inlet check valve corresponding to the air inlet cavity of the cylinder cover cavity and an air exhaust check valve corresponding to the air exhaust cavity of the cylinder cover cavity. The check valve is an elastic sheet type check valve, and the elastic valve sheet is bent and deformed under the action of air pressure change, so that air can enter and be discharged.

As shown in fig. 9, the second scheme (scheme B) of the air intake and exhaust check valve plate assembly of the single-plate combined spring plate in-line three-cylinder integrated air compressor comprises a valve plate (15) provided with air intake and exhaust valve plates, the valve plate is provided with three sets of check valve plates which are linearly arranged and respectively matched with three cylinder cover cavities { air intake cavity (3) and exhaust cavity (4) }, and each set of check valve plates respectively form an air intake check valve plate (16) corresponding to the air intake cavity (3) of the cylinder cover cavity and an exhaust check valve plate (17) and a valve plate limiting plate (18) corresponding to the exhaust cavity (4) of the cylinder cover cavity to form a complete integrated in-line three-cylinder check valve plate assembly.

Fig. 10 shows a third embodiment (C) of an in-line three-cylinder integrated air compressor intake and exhaust check valve plate assembly with intake and exhaust valve assemblies mounted on a single plate, which includes a valve plate (20) with intake and exhaust valve assemblies (19), the valve plate is provided with three intake and exhaust valve assemblies which are respectively matched with three cylinder cover cavities { intake cavity (3) and exhaust cavity (4) to form a cylinder cover cavity } and are arranged in a straight line, each intake and exhaust valve assembly respectively corresponds to three intake and exhaust cavities of the compressor cylinder cover, and a complete integrated in-line three-cylinder check valve plate assembly is formed.

As shown in fig. 11, a schematic diagram of one of the valve plates of the first valve plate (12) of this patent is that 8 valve plate assembling bolt holes (21) are provided at four corners and two sides of the first valve plate (12), 20 valve plate internal circulation water cooling passages (22) are provided at the periphery of the first valve plate (12), the cylinder cover is 14 internal circulation water cooling passages, but the one-way valve plate is 20 valve plate cooling water cooling passages, and 6 spare cooling water cooling passages are reserved, so that when the one-way valve plate is assembled or maintained, the one-way valve plate does not need to distinguish the upper valve plate from the lower valve plate. Realized that the upper and lower valve plate is general, can exchange, practiced thrift manufacturing cost, reduced the maintenance degree of difficulty, but also the valve plate can 180 degrees installations of horizontal rotation, just so solved the air compressor pump head and be used in on different equipment or under the different scenes, according to user's actual need, the adjustment of adjustment air compressor pump head air inlet and outlet's position or exchange, so both made things convenient for the user to install, practiced thrift installation space, improved the convenience of using, promoted user experience. Four corresponding valve plate crankcase vent holes (23) are formed in four corners of the first valve plate (12), and the valve plate crankcase vent holes (23) are located on the outer sides of the corresponding valve plate assembling bolt holes (21). The four valve plate crankcase ventilation holes are arranged, so that the upper valve plate and the lower valve plate are universal, and the air compressor pump head is used in different equipment or different scenes to adjust or interchange the positions of the air inlet and the air outlet of the air compressor pump head. Only produce the valve plate of a specification model in production just can, reduced manufacturing cost, easy to assemble has reduced user's the maintenance degree of difficulty.

The first valve plate can also adopt the following two structural forms, one is that a valve plate crankcase vent hole (23) is arranged on one corner of the first valve plate and is also positioned outside a valve plate assembling bolt hole. The upper valve plate and the lower valve plate with the structure form can not be used universally, and the upper valve plate and the lower valve plate must be marked for paired use during production, assembly and maintenance of users. And the other type is that two corners close to the same position at one end of the valve plate are respectively provided with a valve plate crankcase vent hole (23), and the valve plate crankcase vent hole is positioned at the outer side of the corresponding valve plate assembling bolt hole. This kind of structural style's upper and lower valve plate, when the production assembly, when user's maintenance installation, upper and lower valve plate is general, but must distinguish the fore-and-aft direction of upper and lower valve plate like this, and the crankcase air vent that makes upper valve plate and lower valve plate is corresponding, just can correctly install, can increase the production assembly time, the degree of difficulty when user's maintenance, upper and lower valve plate can not install by 180 degrees of horizontal rotation simultaneously moreover, will cause like this: the user can't adjust the direction of air compressor's air inlet and outlet interface according to the needs of different scenes, and the consequence is: the user can not utilize the limited space, the air compressor of reasonable installation.

As shown in figure 12, for the inline three-cylinder integrated air compressor gasket of this patent, including gasket (24), the gasket including three be linear arrangement respectively with cylinder cap chamber { air inlet chamber (3) and exhaust chamber (4) constitute the gasket gas pocket (25) that the cylinder cap chamber } matches jointly, the gasket gas pocket divide into the inlet port that matches with the air inlet chamber in cylinder cap chamber and the exhaust hole that matches with the exhaust chamber in cylinder cap chamber by gasket interval crossbeam (42). And a plurality of internal circulation water cooling channel holes (45) are formed in the periphery of the gasket. The four corners and two sides are provided with 8 gasket assembling bolt holes (26). Four gasket crankcase ventilation holes (27) are arranged on the four corners, and if the four gasket crankcase ventilation holes are arranged at the positions corresponding to the four corners, the gaskets can be used for both front and back surfaces; the installation of 180 degrees to 360 degrees of level arbitrary, realize blind dress when production or maintenance. The gasket crankcase vent hole is located on the outer side of the corresponding assembly bolt hole.

The gasket of the patent can also adopt two structural forms, one is that a gasket crankcase vent hole (27) is arranged at one corner of the gasket and is also positioned at the outer side of the gasket assembly bolt hole. The gasket with the structure is divided into a front side, a back side and a front-back direction. And the other type is that two corners close to one end are respectively provided with a gasket crankcase vent hole (27), and the gasket crankcase vent hole is positioned at the outer side of the corresponding gasket assembling bolt hole. The gasket with the structure can be installed without distinguishing the front side and the back side of the gasket when being produced, assembled and maintained by a user, but the gasket must be installed in the correct direction, so that the ventilation hole of the crankcase of the gasket corresponds to the ventilation hole of the crankcase of the valve plate, and the difficulty of maintenance and installation by the user when being produced, assembled and maintained is increased.

The two gaskets are respectively an aluminum gasket and a composite gasket made of composite materials, the aluminum gasket with a spacing beam is arranged between the two valve plates, the thickness of the aluminum gasket is 30 threads, the composite gasket with a spacing beam is arranged between the one-way valve plate and the cylinder cover, and the thickness of the composite gasket is 1.2mm. In addition, a composite gasket which is made of composite materials and has no spacing beam in the middle is arranged between the check valve plate and the cylinder body, and the thickness of the composite gasket is 1.2mm.

The cylinder cover, the one-way valve and the gasket are combined with the crankshaft, the cylinder body, the connecting rod, the piston and the like into a whole to form the complete air compressor.

Fig. 13 is a compressor crankshaft (28) for an in-line three cylinder air compressor with three independent connecting rod journals aligned at 120 degrees angles to each other.

Fig. 14 is an assembly diagram of pump head assembly components of an in-line three-cylinder air compressor, which sequentially comprises a cover body (1), an air inlet port (29), a gasket (24), a first valve plate (12), a cylinder block cushion (30), a forced circulation cooling water pump (31), a radiator fan (32), a cylinder block (33), an engine oil filter core (34), a compressor crankshaft (28) and an oil pan (35).

Fig. 15 is a longitudinal sectional view of the inline three-cylinder air compressor, in which the cap (1), the crankshaft (28), the connecting rod (39), the piston (38), the piston ring (37), and the power unit (36) are shown in this order.

FIG. 16 is a view of an in-line three cylinder air compressor, including a pump head assembly (41) and a power section (36).

The compressor is manufactured by matching the compressor cylinder cover of the embodiment with the three-cylinder body (33) which is arranged in a straight line, the operation is stable and smooth, the highest rotating speed in a safety range can reach 9000 revolutions per minute, and the compressed air can reach 2.3m per minute at the economic operating speed of 2900 revolutions per minute ³ The efficiency of the compressor is more than three times that of the traditional piston type air compressor, and the maximum pressure can reach 1.8MPa.

And the temperature is controlled below 82 ℃ in long-term operation.

Example 2

The cylinder cover of the piston type in-line three-cylinder integrated air compressor in the embodiment 2 adopts an external air inlet channel (common for air inlet and outlet manifolds 7), an air outlet channel (common for air inlet and outlet manifolds 7) and an air compressor cylinder cover of an internal circulating water cooling system.

Fig. 4 shows another embodiment of the cylinder head of this patent, an external intake and exhaust channel is adopted, the cover body is an external intake and exhaust manifold type cylinder head (40), intake and exhaust manifolds (7) are respectively arranged on the left and right sides of the external intake and exhaust manifold type cylinder head, the intake and exhaust manifolds (7) have three air ducts, and the intake and exhaust manifolds (7) are respectively communicated with three intake cavities (3) and three exhaust cavities (4).

This novel external inlet channel (7 advance exhaust manifold general), exhaust passage (7 advance exhaust manifold general), be linked together with three air inlet chamber (3) and exhaust chamber (4) respectively. The three-cylinder integrated external intake and exhaust manifold type cylinder cover is combined with an intake passage (7 is used for intake and exhaust manifolds) and an exhaust passage (7 is used for intake and exhaust manifolds).

The rest is substantially the same as in example 1.

Claims

1. The utility model provides an in-line three-cylinder integral type air compressor check valve plate which characterized in that: the valve plate is provided with three groups of check valves (13) which are respectively matched with a cylinder cover cavity and are linearly arranged, and each group of check valves (13) is divided into an air inlet check valve corresponding to an air inlet cavity and an air exhaust check valve corresponding to an air exhaust cavity of the cylinder cover cavity.

2. The inline three cylinder integrated air compressor check valve plate of claim 1, wherein: the four corners and the two sides of the valve plate are provided with 8 valve plate assembling bolt holes (21), the periphery of the valve plate is provided with a plurality of valve plate internal circulation water cooling channels (22), two corners of one end close to the valve plate or four corners of two ends close to the valve plate are provided with one, two or four corresponding valve plate crankcase vent holes (23), and the valve plate crankcase vent holes are positioned at the outer sides of the corresponding valve plate assembling bolt holes.

3. The inline three cylinder integrated air compressor check valve plate of claim 1, wherein: the valve plate is two valve plates (12) which are overlapped face to face, and the check valve (13) comprises a check valve hole I (44) and two check valve plates (14) which are positioned on the check valve hole I (44).

4. The inline three cylinder integrated air compressor check valve plate of claim 1, wherein: the valve plate is a second valve plate (15) provided with an air inlet valve plate and an air outlet valve plate, and the check valve (13) comprises a second check valve hole (43), an air inlet check valve plate (16) corresponding to the air inlet cavity (3), an air outlet check valve plate (17) corresponding to the air outlet cavity (4) and a valve plate limiting plate (18).

5. The inline three cylinder integrated air compressor check valve plate of claim 1, wherein: the valve plate comprises a valve plate III (20) provided with an air inlet and exhaust valve assembly (19), the one-way valve comprises an air inlet and exhaust valve assembly (19), and the air inlet and exhaust valve assembly is a spring combined one-way valve.