CN206988057U - Off-load pipe mounting structure in piston type air compressor - Google Patents

Abstract

The utility model provides the off-load pipe mounting structure in a kind of piston type air compressor, belongs to field of mechanical technique.It solves the problems, such as easily to be damaged during the installation of off-load pipe.Off-load pipe mounting structure in this piston type air compressor, including the off-load tube body between the check valve and unloading valve of piston type air compressor, off-load tube body both ends are respectively connection end one and connection end two, connection end two connects with unloading valve inlet end, there is tubulose outlet side on check valve, connection end one is in through state, and connection end one is inserted in outlet side, and outlet side madial wall matches with the lateral wall of connection end one and both tight abutments are formed and sealed；There is the annular convex shoulder one in solid shape on off-load tube body lateral wall, locking nut one is bolted with outside outlet side, the inner side of locking nut one has annular gear along one, and annular convex shoulder one is clamped at annular gear along between one and outlet side.The utility model has the advantages of preventing from being damaged when off-load pipe from installing.

Description

Off-load pipe mounting structure in piston type air compressor

Technical field

The utility model belongs to field of mechanical technique, is related to a kind of piston type air compressor, particularly a kind of piston type Off-load pipe mounting structure in air compressor.

Background technology

Piston type air compressor is one kind in reciprocating air compressor, and its compressing member is a piston, is done in cylinder interior Move back and forth, carry out seal compression gas by piston ring.

Off-load pipe is a ventilation connecting tube road between the check valve on piston type air compressor and switch unloading valve. When machine does reciprocating piston motion, air-flow by piston movement flows into check valve by high-voltage tube, and (check valve includes threeway Valve body), then by be connected to check valve port off-load pipe enter unloading valve in, be then released out；When stream pressure reaches To unloading valve closing presure when, unloading valve close, now the air-flow in pump head overcomes spring force and frictional force to make one-way valve Mouth is opened, and high pressure draught is discharged.

As shown in figure 1, the connected mode of off-load pipe and check valve is as follows：One end of off-load tube body 1 is in horn-like, the end Portion is pressed on outside the outlet side of check valve 2 and locked by nut 5.The connected mode has two：1st, flared end is Machine punching press, cause horn mouth wall thickness partially thin, after nut 5 is locked, receiving area is small between loudspeaker outer wall and nut 5, easy to break Damage；2nd, flared end and the contact area of the outlet side of check valve 2 are too small, and the sealing effectiveness for causing both to connect is bad.

The connected mode of off-load pipe and unloading valve is as follows：The other end of off-load tube body 1 is inserted in the inlet end of unloading valve 3, and two Gap between person is embedded with cutting ferrule 4, and cutting ferrule 4 is locked by nut 5.There is also a problem for above-mentioned connected mode：When After nut 5 is locked, cutting ferrule 4 realizes sealing by hugging off-load pipe outer wall, causes to exist between cutting ferrule 4 and off-load pipe larger Friction, off-load pipe outer wall is easily damaged in swapping process, so both influence sealing property, and install also relatively complicated.

Utility model content

The purpose of this utility model is above mentioned problem be present for existing technology, it is proposed that in a kind of air compressor Off-load pipe mounting structure, the technical problem of solution are how to prevent off-load pipe to be damaged in installation process.

The purpose of this utility model can be realized by following technical proposal：Off-load Guan An in piston type air compressor Off-load pipe between assembling structure, including check valve and the unloading valve of piston type air compressor located at piston type air compressor Body, the both ends of the off-load tube body are respectively connection end one and connection end two, and connection end two and described unloading valve enter Gas end connects, and has outlet side in a tubular form on described check valve, it is characterised in that and described connection end one is in through state, And the connection end one is inserted in described outlet side, the lateral wall of the shape and size of the madial wall of outlet side with connection end one Match, and the madial wall of outlet side and the lateral wall tight abutment of connection end one are formed and sealed；Described off-load tube body There is the annular convex shoulder one in solid shape, and annular convex shoulder one is coaxially disposed with off-load tube body, described outlet on lateral wall End is outer to be bolted with locking nut one, and the inner side of locking nut one has annular gear along one, and annular convex shoulder one is clamped at annular gear Along between one and outlet side.

In off-load pipe, connection end one seals, and stress acts on annular convex shoulder together, therefore sealing and part of the force It is separated, can effectively avoids the stress of connection end one from deforming so in installation process, it is ensured that outlet side and connection end Reliable sealing is consistently formed between one, to improve the job stability of compressor.

Due to annular convex shoulder one be located at it is in the side wall of connection end one and coaxial with connection end one, to be effectively increased off-load pipe Lifting surface area, larger thrust can be born, meanwhile, it is in solid shape that annular convex shoulder one, which is, can so improve ring The intensity of shape convex shoulder one, so as to improve the weight capacity of annular convex shoulder one, then effectively avoid off-load pipe in installation process by Damage.

In off-load pipe mounting structure in above-mentioned piston type air compressor, the both ends of the surface of described annular convex shoulder one It is plane and the two end faces respectively with annular gear along one end face and the end face tight abutment of outlet side.

The both ends of the surface of annular convex shoulder one are plane, both can further increase the lifting surface area of annular convex shoulder one, again may be used So that stress thereon everywhere is more uniform, so that annular convex shoulder one can bear bigger thrust, then further keep away Exempt from off-load pipe to be damaged.

Meanwhile the both ends of the surface of annular convex shoulder one make above-mentioned respectively with annular gear along one and the end face tight abutment of outlet side Reliable sealing is formed between three, to extend sealed pathway, to increase the difficulty of gas leakage, so as to further improve compression The job stability of machine.

In off-load pipe mounting structure in above-mentioned piston type air compressor, described inlet end is in a tubular form, described Connection end two be in through state, and the connection end two is inserted in described inlet end, the shape and size of the madial wall of inlet end Lateral wall with connection end two matches, and the madial wall of inlet end and the lateral wall tight abutment of connection end two formed it is close Envelope；Also there is the annular convex shoulder two in solid shape, and annular convex shoulder two and off-load pipe on the lateral wall of described off-load tube body Body is coaxially disposed, and is bolted with locking nut two outside described inlet end, and the inner side of locking nut two has annular gear along two, and ring Shape convex shoulder two is clamped at annular gear along between two and inlet end.

, again can be further while ensuring to form sealed connection between off-load pipe and inlet end using above-mentioned design Off-load pipe is avoided to be damaged in installation process.

In off-load pipe mounting structure in above-mentioned piston type air compressor, the both ends of the surface of described annular convex shoulder two It is plane and the two end faces respectively with annular gear along two end face and the end face tight abutment of inlet end.

In off-load pipe mounting structure in above-mentioned piston type air compressor, described off-load tube body, convex annular Shoulder one and the three of annular convex shoulder two pass through same material disposal molding.

I.e. off-load pipe is integrated part, has so both facilitated the processing of off-load pipe, can improve the intensity of off-load pipe again, so as to enter One step avoids off-load pipe from being damaged in installation process.

Compared with prior art, the off-load pipe mounting structure in this piston type air compressor has advantages below：

1st, in off-load pipe, connection end seals, and annular convex shoulder plays stress, therefore sealing and part of the force are It is separated, can effectively avoid connection end stress from deforming so in installation process, it is ensured that outlet side (or inlet end) and Reliable sealing is consistently formed between connection end, to improve the job stability of compressor.

2nd, due to annular convex shoulder be located at it is in the side wall of connection end and coaxial with connection end, to be effectively increased the stress of off-load pipe Area, larger thrust can be born, meanwhile, annular convex shoulder can so improve annular convex shoulder in solid shape Intensity, so as to improve the weight capacity of annular convex shoulder, then effectively avoid off-load pipe in installation process be damaged.

Brief description of the drawings

Fig. 1 is the mounting structure of existing off-load pipe.

Fig. 2 is the mounting structure of this off-load pipe.

Fig. 3 is the structural representation of off-load pipe.

In figure, 1, off-load tube body；1a, connection end one；1b, connection end two；1c, annular convex shoulder one；1d, annular convex shoulder Two；2nd, check valve；2a, outlet side；3rd, unloading valve；3a, inlet end；4th, cutting ferrule；5th, nut；6th, locking nut one；6a, annular gear Along one；7th, locking nut two；7a, annular are kept off along two.

Embodiment

It is specific embodiment of the utility model and with reference to accompanying drawing below, the technical solution of the utility model is made further Description, but the utility model is not limited to these embodiments.

As shown in Fig. 2 in off-load pipe mounting structure in piston type air compressor, piston type air compressor includes Check valve 2 and unloading valve 3.This off-load pipe mounting structure is made up of off-load tube body 1, locking nut 1, locking nut 27 etc.. Wherein, off-load tube body 1 is arranged between check valve 2 and unloading valve 3, for connecting the outlet side 2a and unloading valve 3 of check valve 2 Inlet end 3a.

Specifically, as depicted in figs. 1 and 2, the both ends of off-load tube body 1 are respectively the 1a of connection end one and connection end two 1b, and the 1a of connection end one and the 1b of connection end two are in through state.

Wherein, the connected mode of the 1a of connection end one and check valve 2 is as follows：

There is outlet side 2a in a tubular form, and the shape and size of outlet side 2a madial wall are with being connected on check valve 2 The lateral wall of a 1a is held to match.The 1a of connection end one is inserted in the 2a of outlet side, and now, outlet side 2a madial wall and connection end One 1a lateral wall tight abutment forms sealing, it is ensured that the 1a of connection end one connects with outlet side 2a stabilizations.Outside off-load tube body 1 There is the 1c of annular convex shoulder one in solid shape, and the 1c of annular convex shoulder one is coaxially disposed with off-load tube body 1 in side wall.Outlet side 2a It is outer to be bolted with locking nut 1, there is annular gear along a 6a on the inside of locking nut 1, and annular is kept off along a 6a and locking nut One 6 be integral type structure.The 1c of annular convex shoulder one is clamped at annular gear along between a 6a and outlet side 2a.In the present embodiment, The 1c of annular convex shoulder one both ends of the surface are plane, and the two above-mentioned end faces are kept off along the end face of a 6a and outlet with annular respectively 2a end face tight abutment is held, while one 1c uniform forces of annular convex shoulder are improved, outlet side 2a and company can be strengthened again Connect the sealing of one 1a connections of end.

The 1b of connection end two and unloading valve 3 connected mode are as follows：

There is inlet end 3a in a tubular form, and the shape and size of inlet end 3a madial wall are with being connected on unloading valve 3 Two 1b lateral wall is held to match.The 1b of connection end two is inserted in inlet end 3a, and now, inlet end 3a madial wall and connection end Two 1b lateral wall tight abutment forms sealing, it is ensured that the 1b of connection end two connects with inlet end 3a stabilizations.Outside off-load tube body 1 There is the 1d of annular convex shoulder two in solid shape, and the 1d of annular convex shoulder two is coaxially disposed with off-load tube body 1 in side wall.Outlet side 2a It is outer to be bolted with locking nut 27, there is annular gear along two 7a on the inside of locking nut 27, and annular is kept off along two 7a and locking nut 27 be integral type structure.The 1d of annular convex shoulder two is clamped at annular gear along between two 7a and inlet end 3a.In the present embodiment, The 1d of annular convex shoulder two both ends of the surface are plane, and the two above-mentioned end faces are kept off along two 7a end face and air inlet with annular respectively 3a end face tight abutment is held, while two 1d uniform forces of annular convex shoulder are improved, inlet end 3a and company can be strengthened again Connect the sealing of two 1b connections of end.

In the present embodiment, off-load tube body 1, the 1c of annular convex shoulder one and the 1d three of annular convex shoulder two pass through same material one Secondary property shaping.I.e. off-load pipe is integrated part, has so both facilitated the processing of off-load pipe, can improve the intensity of off-load pipe again, so as to Off-load pipe is further avoided to be damaged in installation process.It is preferred that the 1a of connection end one, the 1b of connection end two, inlet end 3a and outlet side 2a Four is cylindrical.During actual production, the material of off-load pipe can be engineering plastics, steel etc..

Specific embodiment described herein is only to the utility model spirit explanation for example.The utility model institute Category those skilled in the art can make various modifications or supplement to described specific embodiment or using similar Mode substitute, but without departing from spirit of the present utility model or surmount scope defined in appended claims.

Claims (5)

1. the off-load pipe mounting structure in piston type air compressor, including the check valve (2) located at piston type air compressor Off-load tube body (1) between the unloading valve (3) of piston type air compressor, the both ends of the off-load tube body (1) are respectively Connection end one (1a) and connection end two (1b), and connection end two (1b) connects with the inlet end (3a) of described unloading valve (3), institute There is outlet side (2a) in a tubular form on the check valve (2) stated, it is characterised in that described connection end one (1a) is in through state, And the connection end one (1a) is inserted in described outlet side (2a), the shape and size of the madial wall of outlet side (2a) are with being connected One (1a) of end lateral wall matches, and the lateral wall tight abutment of the madial wall of outlet side (2a) and connection end one (1a) is formed Sealing；There is the annular convex shoulder one (1c) in solid shape, and annular convex shoulder one on the lateral wall of described off-load tube body (1) (1c) is coaxially disposed with off-load tube body (1), and locking nut one (6), locking nut one are bolted with outside described outlet side (2a) (6) inner side has annular gear along one (6a), and annular convex shoulder one (1c) is clamped at annular gear along one (6a) and outlet side (2a) Between.

2. the off-load pipe mounting structure in piston type air compressor according to claim 1, it is characterised in that described The both ends of the surface of annular convex shoulder one (1c) are plane and the two end faces are kept off along one (6a) end face and outlet side with annular respectively The end face tight abutment of (2a).

3. the off-load pipe mounting structure in piston type air compressor according to claim 1 or 2, it is characterised in that institute In a tubular form, described connection end two (1b) is in through state to the inlet end (3a) stated, and the connection end two (1b) is inserted in and described entered In gas end (3a), the lateral wall of the shape and size of the madial wall of inlet end (3a) with connection end two (1b) matches, and enters The madial wall at gas end (3a) is formed with the lateral wall tight abutment of connection end two (1b) and sealed；Described off-load tube body (1) Also there is the annular convex shoulder two (1d) in solid shape on lateral wall, and annular convex shoulder two (1d) with off-load tube body (1) is coaxial sets Put, locking nut two (7) be bolted with outside described inlet end (3a), there is annular kept off on the inside of locking nut two (7) along two (7a), And annular convex shoulder two (1d) is clamped at annular gear along between two (7a) and inlet end (3a).

4. the off-load pipe mounting structure in piston type air compressor according to claim 3, it is characterised in that described The both ends of the surface of annular convex shoulder two (1d) are plane and the two end faces are kept off along two (7a) end face and inlet end with annular respectively The end face tight abutment of (3a).

5. the off-load pipe mounting structure in piston type air compressor according to claim 3, it is characterised in that described Off-load tube body (1), annular convex shoulder one (1c) and (1d) three of annular convex shoulder two pass through same material disposal molding.