A kind of dedusting cylinder
Technical field
The utility model relates to cylinder technical field, especially relates to a kind of dedusting cylinder.
Background technique
Cylinder is by compressed air-driven piston reciprocating air actuator in cylinder body, be made up of cylinder barrel, end cap, piston, piston rod and Sealing etc., usually on the end cap of piston rod side, seal ring and dust ring is provided with, to prevent from outwards leaking gas from piston rod and preventing external dust from entering in cylinder barrel.Dedusting cylinder is the matching parts of the dust pelletizing system for some factory building or equipment, and its effect is the filter screen on reciprocating dedusting passage, to reach the object of clean filter screen, and can see the dedusting cylinder described in patent announcement CN202684330U.Because the working environment of such cylinder is very severe, dust in air and greasy dirt heavier, be easy to form stupid stain on the top layer of piston rod, this stupid stain can not be removed by common dust ring, and can rub along with the to-and-fro motion of piston rod and Sealing produce and damage Sealing, cause cylinder cisco unity malfunction, its working life is not long.
Summary of the invention
For the deficiency that above-mentioned prior art exists, the purpose of this utility model is to provide a kind of dedusting cylinder, can adapt to severe working environment, to extend its working life.
To achieve these goals, the technological scheme that the utility model adopts is:
A kind of dedusting cylinder, comprise cylinder barrel, piston rod and piston, cylinder barrel both sides are respectively equipped with protecgulum and bonnet, protecgulum and bonnet are respectively equipped with the air passageways communicated with cylinder barrel inside, piston is located at cylinder barrel inside and is connected with one end of piston rod, the other end of piston rod passes protecgulum and stretches out in cylinder barrel outside, and protecgulum is provided with the dust-blocking ring and Sealing that match with piston rod from outside to inside successively, and dust-blocking ring is fixed on protecgulum by dust-break retainer ring; Dust-break retainer ring is that fluorine rubber is made, and its effect is banding dust-blocking ring, and makes the magnitude of interference keeping 5 ~ 20 microns between dust-blocking ring and piston rod; Dust-blocking ring is that phosphor-copper is made, and its effect is the stupid stain by being formed to remove piston rod surface with the close contact of piston rod surface.
Wherein, described Sealing is copper sheathing, described protecgulum between dust-blocking ring and copper sheathing, be also provided with the dust ring matched with described piston rod.
Further scheme, described protecgulum and described bonnet are equipped with vent and throttle orifice, the both sides of piston are respectively equipped with the buffer part matched with vent, and described protecgulum is also respectively equipped with to the vent place of described bonnet the buffer ring that corresponding side buffer part matches with piston.
Further scheme, protecgulum is provided with air inlet seat, bonnet is provided with valve seat, tracheae is provided with between air inlet seat and valve seat, valve seat is provided with two-position-five-way solenoid valve, valve seat offers the inlet hole, the first working hole, the second working hole, first row pore and the second row pore that adapt with this two-position-five-way solenoid valve, the first working hole is communicated with the gas-entered passageway of protecgulum by tracheae, and the second working hole communicates with the gas-entered passageway of bonnet.
Further scheme, first row pore and the second row pore place of described valve seat are also separately installed with throttle muffler.
Wherein, described protecgulum is fixedly connected with hexagon nut by pull bar with described bonnet, and described piston is fixedly connected with by socket head screw with described piston rod.
Wherein, described piston is provided with the wear ring and Y-shaped ring that match with cylinder barrel.
Wherein, described dust-blocking ring and described dust-break retainer ring are glued together by glue.
Adopt after technique scheme, the utility model compared to the prior art advantageously:
The utility model sets up a dust-blocking ring be made up of phosphor-copper material on the protecgulum of cylinder barrel, this dust-break is fixed on protecgulum full by the dust-break retainer ring be made up of fluorine rubber, fluorine rubber has stable flow elasticity, for by dust-blocking ring banding, and make between dust-blocking ring and piston rod, to keep certain magnitude of interference, because dust-blocking ring is made up of phosphor-copper material, there is good wear resistance, and hardness ratio piston rod is low, therefore dust-blocking ring is by effectively removing with the close contact of piston rod surface the stupid stain that piston rod surface formed, and dust-blocking ring can not cause damage to piston rod surface, thus avoid the stupid stain of piston rod surface and Sealing friction and damage Sealing, thus this dedusting cylinder can adapt to severe working environment, longer service life.
Accompanying drawing explanation
Below in conjunction with drawings and Examples, the utility model is further illustrated:
Fig. 1 is sectional structure schematic diagram of the present utility model.
Fig. 2 is M place structure for amplifying schematic diagram in Fig. 1.
In figure, 1: piston rod; 2: pull bar; 3: hexagon nut; 4: compression spring; 5: dust-break retainer ring; 6: dust-blocking ring; 7: dust ring; 8: copper sheathing; 9: protecgulum; 10: air inlet seat; 11: buffer ring; 12: tracheae; 13: cylinder barrel; 14: socket head screw; 15: piston; 16: wear ring; 17:Y type circle; 18: valve seat; 19: two-position-five-way solenoid valve; 20: bonnet; 21: air passageways; 22: vent; 23: throttle orifice; 24: buffer part.
Embodiment
The following stated is only preferred embodiment of the present utility model, does not therefore limit protection domain of the present utility model.
Embodiment, as depicted in figs. 1 and 2.
A kind of dedusting cylinder, comprise cylinder barrel 13, piston rod 1 and piston 15, cylinder barrel 13 both sides are respectively equipped with protecgulum 9 and bonnet 20, protecgulum 9 is fixedly connected with hexagon nut 3 by pull bar 2 with bonnet 20, hexagon nut 3 is bolted in pull bar 2 end, be provided with compression spring 4 between hexagon nut 3 and protecgulum 9 (bonnet 20), protecgulum 9 is equipped with O type circle with the joint of cylinder barrel 13 and the joint of bonnet 20 and cylinder barrel 13.
Piston 15 is located at cylinder barrel 13 inside and is connected with one end of piston rod 1, the other end of piston rod 1 passes protecgulum 9 and stretches out in cylinder barrel 13 outside, piston 15 is fixedly connected with by socket head screw 14 with piston rod 1, particularly, the end of piston rod 1 is provided with blind hole, socket head screw 14 is bolted in this blind hole, and piston 15 is inserted in the end of piston rod 1 and is fixed by socket head screw 14, and socket head screw 14 adds appropriate anaerobic adhesive.The perisporium of piston 15 is provided with wear ring 16 and Y-shaped ring 17, and Y-shaped ring 17 seals, its leading role of wear ring 16.
Protecgulum 9 and bonnet 20 are respectively equipped with the air passageways 21 communicated with cylinder barrel 13 inside, protecgulum 9 and bonnet 20 are equipped with vent 22 and throttle orifice 23, vent 22 and throttle orifice 23 all communicate with corresponding side air passageways 21, the aperture of throttle orifice 23 is less than the aperture of vent 22, the both sides of piston 15 are respectively equipped with the buffer part 24 matched with vent 22, and vent 22 place of protecgulum 9 and bonnet 20 is also respectively equipped with the buffer ring 11 that side corresponding to piston 15 buffer part 24 matches.When piston 15 is positioned at cylinder barrel 13 end, the buffer part 24 of piston 15 side is inserted in this side vent 22, and with buffer ring 11 close fit of this side, now this side air passageways 21 by throttle orifice 23 conducting of this side, thus can only play buffer function to piston 15 in the movement of cylinder barrel 13 end with cylinder barrel 13 inside; And when piston 15 is positioned at the middle part of cylinder barrel 13, namely the both sides buffer part 24 of piston 15 all departs from the vent 22 of both sides, now both sides air passageways 21 and cylinder barrel 13 inside are simultaneously by vent 22 and throttle orifice 23 conducting of both sides, no longer hinder the movement of piston 15, make piston 15 can fast moving.
Protecgulum 9 is provided with the dust-blocking ring 6, dust ring 7 and the Sealing that match with piston rod 1 from outside to inside successively, Sealing is copper sheathing 8, it is rigidity slipper seal between copper sheathing 8 and piston rod 1, dust ring 7 is positioned at outside copper sheathing 8 and plays dustproof effect, dust-blocking ring 6 is fixed on protecgulum 9 by dust-break retainer ring 5, and dust-blocking ring 6 and dust-break retainer ring 5 are glued together by glue.Dust-break retainer ring 5 is made for fluorine rubber, and its effect is banding dust-blocking ring 6, and makes the magnitude of interference keeping 5 ~ 20 microns between dust-blocking ring 6 and piston rod 1.Dust-blocking ring 6 is made for phosphor-copper, shape is taper, be convenient to glue together with dust-break retainer ring 5 and fix, the conical surface of dust-blocking ring 6 is provided with joint-cutting, can under the effect of dust-break retainer ring 5 with piston rod 1 Interference contact, the effect of dust-blocking ring 6 is the stupid stains by being formed to remove piston rod 1 surface with the close contact on piston rod 1 surface.
This dedusting cylinder sets up a dust-blocking ring be made up of phosphor-copper material 6 on protecgulum 9, this dust-break is fixed on protecgulum 9 full by the dust-break retainer ring 5 be made up of fluorine rubber, fluorine rubber has stable flow elasticity, for by dust-blocking ring 6 banding, and make to keep certain magnitude of interference between dust-blocking ring 6 and piston rod 1, because dust-blocking ring 6 is made up of phosphor-copper material, there is good wear resistance, and hardness ratio piston rod 1 is low, therefore dust-blocking ring 6 is by effectively removing with the close contact on piston rod 1 surface the stupid stain that piston rod 1 surface formed, and dust-blocking ring 6 can not cause damage to piston rod 1 surface, thus avoid the stupid stain on piston rod 1 surface and Sealing friction and damage Sealing, thus this dedusting cylinder can adapt to severe working environment, longer service life.
Protecgulum 9 is provided with air inlet seat 10, bonnet 20 is provided with valve seat 18, tracheae 12 is provided with between air inlet seat 10 and valve seat 18, valve seat 18 is provided with two-position-five-way solenoid valve 19, valve seat 18 offers adapt with this two-position-five-way solenoid valve 19 inlet hole P, the first working hole A, the second working hole B, first row pore R and second row pore S, first working hole A is communicated by the gas-entered passageway of tracheae 12 with protecgulum 9, and the second working hole B communicates with the gas-entered passageway of bonnet 20.First row pore R and the second row pore S place of valve seat 18 are also separately installed with throttle muffler, play noise elimination throttling action.
Its working procedure is: Figure 1 shows that normality, the air passageways 21 of working hole, the first working hole A, tracheae 12 and protecgulum 9 is led in inlet hole P air inlet successively by the length of two-position-five-way solenoid valve 19, promote piston 15 to move right, now the second working hole B is in exhaust condition, and pressurized air is discharged from second row pore S after the exhaust port of two-position-five-way solenoid valve 19; After two-position-five-way solenoid valve 19 obtains electric commutation, inlet hole P air inlet is successively by the air passageways 21 of the commutation work hole of two-position-five-way solenoid valve 19, the second working hole B and bonnet 20, promote piston 15 to be moved to the left, now the first working hole A is in exhaust condition, and pressurized air is discharged from first row pore R after the exhaust port of two-position-five-way solenoid valve 19.Two-position-five-way solenoid valve 19 dead electricity repeats said process, forms a motion cycle of going round and beginning again.
The above is only better embodiment of the present utility model, therefore all equivalences done according to structure, feature and the principle described in the utility model patent claim change or modify, and are included in the utility model patent claim.