CN201991867U

CN201991867U - Hard dustproof cylinder

Info

Publication number: CN201991867U
Application number: CN2011201114779U
Authority: CN
Inventors: 孙光锋; 韩金乾; 胡英标; 邹小燕
Original assignee: NINGBO GUANGHUA PNEUMATIC INDUSTRY Co Ltd
Current assignee: NINGBO GUANGHUA PNEUMATIC INDUSTRY Co Ltd
Priority date: 2011-04-15
Filing date: 2011-04-15
Publication date: 2011-09-28
Anticipated expiration: 2021-04-15

Abstract

The utility model relates to the technical field of a cylinder, in particular to a hard dustproof cylinder, which comprises a cylinder tube. A front cover and a back cover are arranged at two ends of the cylinder tube respectively, a first air inlet is arranged on the front cover and communicated with the inside of the cylinder tube. A second air inlet is arranged on the back cover and communicated with the inside of the cylinder tube. A piston is arranged inside the cylinder tube, a piston rod is fixed on the piston, and the other end of the piston rod penetrates through a through hole arranged on the front cover and extends out the front cover. A dustproof sealing ring and a retaining ring are arranged between the piston rod and the inner wall of the through hole arranged on the front cover, and the retaining ring is arranged on the outer side of the dustproof sealing ring. The retaining ring of the hard dustproof cylinder is made of materials having high abrasion resistance and excellent elastic performance, can generate certain enclasping force when the piston is moved transversally, thereby preventing dusts and impurities from entering and having a higher dustproof performance.

Description

A kind of hard Dust-proof air cylinder

Technical field

The utility model relates to the cylinder technical field, particularly a kind of hard Dust-proof air cylinder.

Background technique

Cylinder is as the conventional machinery component unit, and common by people, the major impetus source of existing cylinder is oil or gas.There is irrationality in existing cylinder because of structure setting, is mainly used in the environment of comparison cleaning so have cylinder now, perhaps the less occasion of dust.Along with the continuous expansion of cylinder application and application area, the anti-dust performance of cylinder is had higher requirement, develop a kind of Dust-proof air cylinder, become the industry research focus.

The model utility content

The purpose of this utility model is at the defective of prior art and deficiency, and the hard Dust-proof air cylinder of a kind of compact structure, good dustproof effect is provided.

For achieving the above object, the utility model is by the following technical solutions:

A kind of hard Dust-proof air cylinder of the utility model comprises cylinder barrel, and described cylinder barrel two ends are respectively equipped with protecgulum and bonnet, is provided with the O RunddichtringO between protecgulum and the cylinder barrel, is provided with the O RunddichtringO between bonnet and the cylinder barrel; Described protecgulum is provided with first suction port, first suction port and cylinder barrel internal communication; Be covered with second suction port after described, second suction port and cylinder barrel internal communication; Be provided with piston in the described cylinder barrel, be fixed with piston rod on the piston, the piston rod the other end passes to be located at the through hole on the protecgulum and to stretch out outside the protecgulum; Be provided with dust-proof seal ring between described piston rod and the protecgulum through-hole wall, be provided with back-up ring between described piston rod and the protecgulum through-hole wall, described back-up ring is located at the outside of dust-proof seal ring.

Further, described back-up ring is flat phosphor bronze coil.

Further, be provided with self oiling bearing between described piston rod and the protecgulum through-hole wall, described self oiling bearing is located at the inboard of dust-proof seal ring.

Further, be provided with wear ring between described piston side wall and the inner wall of cylinder.

Further, be provided with y-type seal ring between described piston side wall and the inner wall of cylinder, described y-type seal ring has two, is respectively equipped with the both sides of wear ring.

Further, be provided with the bonnet cover plate outside the described bonnet.

Further, be provided with pull bar between described protecgulum and the bonnet.

The utility model beneficial effect is: be provided with back-up ring between piston rod of the present utility model and the protecgulum through-hole wall, described back-up ring is located at the outside of dust-proof seal ring.The utility model back-up ring is formed by high anti-attrition, superior elasticity material, and piston rod is when side-to-side movement, and back-up ring produces certain power of holding tightly to piston rod, and to stop the intrusion of dust impurity, anti-dust performance is higher.

Description of drawings

Fig. 1 is a sectional structure schematic representation of the present utility model.

Among the figure:

2, piston rod; 3, back-up ring; 4, dust-proof seal ring; 5, self oiling bearing;

6, first suction port; 7, protecgulum; 9, O RunddichtringO; 10, cylinder barrel;

11, pull bar; 12, piston; 13, second suction port; 14, y-type seal ring;

15, wear ring; 16, bonnet; 17, bonnet cover plate.

Embodiment

Below in conjunction with accompanying drawing the utility model is further described.

As shown in Figure 1, a kind of hard Dust-proof air cylinder of the utility model comprises cylinder barrel 10, and described cylinder barrel 10 two ends are respectively equipped with protecgulum 7 and bonnet 16, are provided with O RunddichtringO 9 between protecgulum 7 and the cylinder barrel 10, is provided with 0 RunddichtringO 9 between bonnet 16 and the cylinder barrel 10.Described protecgulum 7, bonnet 16 and cylinder barrel 10 constitute the utility model integral outer structure.

Described protecgulum 7 is provided with first suction port, 6, the first suction ports 6 and cylinder barrel 10 internal communication, and described bonnet 16 is provided with second suction port, 13, the second suction ports 13 and cylinder barrel 10 internal communication.The effect of first suction port 6 and second suction port 13 is to provide power gas source for the utility model.

Be provided with piston 12 in the described cylinder barrel 10, be fixed with piston rod 2 on the piston 12, piston rod 2 the other ends pass to be located at the through hole on the protecgulum 7 and to stretch out outside the protecgulum 7.Piston 12 and piston rod 2 constitute the utility model internal structure.

Be provided with dust-proof seal ring 4 between the through-hole wall of described piston rod 2 and protecgulum 7, mainly play the effect of sealing and dustproof.

Be provided with back-up ring 3 between described piston rod 2 and protecgulum 7 through-hole walls, described back-up ring 3 is located at the outside of dust-proof seal ring 4.Described back-up ring 3 is flat phosphor bronze coil, and flat PHOSPHATE BRONZE WIRE is high anti-attrition, superior elasticity material, and piston rod 2 is when side-to-side movement, and 3 pairs of piston rods of back-up ring 2 produce certain power of holding tightly, and to stop the intrusion of dust impurity, anti-dust performance is higher.The utility model is established a back-up ring 3 again in the outside of dust-proof seal ring 4, has reached splendid dustproof effect.

Be provided with self oiling bearing 5 between described piston rod 2 and protecgulum 7 through-hole walls, described self oiling bearing 5 is located at the inboard of dust-proof seal ring 4.Self oiling bearing 5 can effectively reduce the frictional force between piston rod 2 and protecgulum 7 through-hole walls, has improved piston rod 2 flexibility ratios.Self oiling bearing 5 is located at the inboard of dust-proof seal ring 4, to prevent dust self oiling bearing 5 is polluted.

Be provided with wear ring 15 between described piston 12 sidewalls and cylinder barrel 10 inwalls, to reduce piston 12 sidewalls and cylinder barrel 10 inwall frictional loss degree.

Be provided with y-type seal ring 14 between described piston 12 sidewalls and cylinder barrel 10 inwalls, described y-type seal ring 14 has two, is respectively equipped with the both sides of wear ring 15.Y-type seal ring 14 is beneficial to piston about 12 and slidably reciprocates with packed-piston 12 left and right sides.

Described bonnet 16 outsides are provided with bonnet cover plate 17, and the effect of bonnet cover plate 17 mainly is 16 protective actions of bonnet.

Be provided with pull bar 11 between described protecgulum 7 and the bonnet 16, to improve the utility model overall fixed performance.

The above only is a better embodiment of the present utility model, so all equivalences of doing according to the described structure of the utility model patent claim, feature and principle change or modify, is included in the utility model patent claim.

Claims

1. hard Dust-proof air cylinder, comprise cylinder barrel (10), described cylinder barrel (10) two ends are respectively equipped with protecgulum (7) and bonnet (16), are provided with O RunddichtringO (9) between protecgulum (7) and the cylinder barrel (10), are provided with O RunddichtringO (9) between bonnet (16) and the cylinder barrel (10); Described protecgulum (7) is provided with first suction port (6), first suction port (6) and cylinder barrel (10) internal communication; Described bonnet (16) is provided with second suction port (13), second suction port (13) and cylinder barrel (10) internal communication; Be provided with piston (12) in the described cylinder barrel (10), be fixed with piston rod (2) on the piston (12), piston rod (2) the other end passes to be located at the through hole on the protecgulum (7) and to stretch out outside the protecgulum (7); Be provided with dust-proof seal ring (4) between described piston rod (2) and protecgulum (7) through-hole wall, it is characterized in that: be provided with back-up ring (3) between described piston rod (2) and protecgulum (7) through-hole wall, described back-up ring (3) is located at the outside of dust-proof seal ring (4).

2. hard Dust-proof air cylinder according to claim 1 is characterized in that: described back-up ring (3) is flat phosphor bronze coil.

3. hard Dust-proof air cylinder according to claim 2 is characterized in that: be provided with self oiling bearing (5) between described piston rod (2) and protecgulum (7) through-hole wall, described self oiling bearing (5) is located at the inboard of dust-proof seal ring (4).

4. hard Dust-proof air cylinder according to claim 3 is characterized in that: be provided with wear ring (15) between described piston (12) sidewall and cylinder barrel (10) inwall.

5. hard Dust-proof air cylinder according to claim 4 is characterized in that: be provided with y-type seal ring (14) between described piston (12) sidewall and cylinder barrel (10) inwall, described y-type seal ring (14) has two, is respectively equipped with the both sides of wear ring (15).

6. according to the arbitrary described hard Dust-proof air cylinder of claim 1-5, it is characterized in that: described bonnet (16) outside is provided with bonnet cover plate (17).

7. hard Dust-proof air cylinder according to claim 6 is characterized in that: be provided with pull bar (11) between described protecgulum (7) and the bonnet (16).