CN218207296U - Acetic acid corrosion resistant piston rod - Google Patents

Abstract

The utility model discloses a piston rod of nai acetic acid corrosion belongs to piston rod technical field, including the piston rod body, the surface of the piston rod body is equipped with the end cover, the through-hole has been seted up to the right flank of end cover, the inside of through-hole is equipped with first sealing washer, the inner wall fixedly connected with screw ring of through-hole, the inner circle threaded connection of screw ring has annular thread piece, the left surface of annular thread piece contacts with the right flank of first sealing washer, the fixed cover of right flank fixedly connected with of annular thread piece, the annular shrinkage pool has been seted up to the right flank of end cover, the left end of fixed cover extends to the inside of annular shrinkage pool, first annular groove has been seted up to the inner circle of annular thread piece. This resistant acetic acid corrodes piston rod conveniently takes out the change with the inside first sealing washer of through-hole, solves the problem that the sealing washer between present piston rod and the end cover is difficult to dismantle, and is more convenient nimble when can making the sealing washer change.

Description

Acetic acid corrosion resistant piston rod

Technical Field

The utility model relates to a piston rod field specifically is an acetic acid resistant piston rod.

Background

The piston rod is a connecting component for supporting the piston to do work, most of the piston rod is applied to an oil cylinder and an air cylinder movement executing component, the piston rod is a moving component with frequent movement and high technical requirements, the hydraulic oil cylinder is taken as an example and consists of a cylinder barrel, a piston rod, a piston and an end cover, and the service life and the reliability of the whole product are directly influenced by the quality of the processing quality of the piston rod.

At present, the piston rod is processed by rolling, surface residual compressive stress is reserved on the surface layer, so that the sealing of surface micro cracks of the piston rod can be facilitated, and the expansion of corrosion resistance can be hindered, so that the corrosion resistance of the surface of the piston rod can be effectively improved, and the piston rod also has the characteristic of acetic acid corrosion resistance.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a resistant acetic acid corrodes piston rod to solve the problem that proposes in the above-mentioned background art.

In order to achieve the above purpose, the utility model provides a following technical scheme:

the utility model provides a piston rod resistant to acetic acid corrosion, includes the piston rod body, the surface of the piston rod body is equipped with the end cover, the through-hole has been seted up to the right flank of end cover, the inside of through-hole is equipped with first sealing washer, the inner wall fixedly connected with screw thread ring of through-hole, the inner circle threaded connection of screw thread ring has the annular thread piece, the left surface of annular thread piece contacts with the right flank of first sealing washer, the fixed cover of right flank fixedly connected with of annular thread piece, the annular shrinkage pool has been seted up to the right flank of end cover, the left end of fixed cover extends to the inside of annular shrinkage pool.

As a further aspect of the present invention: a first annular groove is formed in the inner ring of the annular thread block, a dust ring is arranged inside the first annular groove, and the inner ring of the dust ring is in contact with the outer surface of the piston rod body.

As a further aspect of the present invention: a second annular groove is formed in the upper surface of the end cover, and a second sealing ring is arranged inside the second annular groove.

As a further aspect of the present invention: two screw thread mouths, two, have been seted up to the inner wall of annular shrinkage pool the equal threaded connection of inner wall of screw thread mouth has fixing bolt.

As a further aspect of the present invention: a third annular groove is formed in the outer surface of the fixing cover, and one end, close to each other, of each fixing bolt is in contact with the inner wall of the corresponding third annular groove.

As a further aspect of the present invention: the outer surface of the end cover is fixedly connected with an annular mounting plate, and mounting holes which are arranged in an annular mode are formed in the outer surface of the annular mounting plate.

Compared with the prior art, the beneficial effects of the utility model are that:

this acetic acid corrosion resistant piston rod, be provided with the through-hole through the end cover, can make first sealing washer install in the inside of through-hole, it is convenient to dismantle it simultaneously, through the inside screw ring that is provided with of through-hole, and with the cooperation between the annular thread piece, can make the annular thread piece rotate at the inner circle of screw ring, and can make the left end of annular thread piece press from both sides tight fixed to first sealing washer, thereby reach the effect fixed after the installation of first sealing washer, then utilize the installation of first sealing washer, just play the characteristics sealed between the piston rod body to the end cover, through shifting out of annular thread piece inside the through-hole, can remove the fixed of first sealing washer fast, and then conveniently take out the change with the inside first sealing washer of through-hole, solve the problem that the sealing washer between present piston rod and the end cover is difficult to dismantle, can make the sealing washer more convenient nimble when changing.

Drawings

FIG. 1 is a schematic perspective view of a piston rod with acetic acid corrosion resistance;

FIG. 2 is a cross-sectional view of an elevation of an end cap of an acetic acid corrosion resistant piston rod;

FIG. 3 is a schematic perspective view of a stationary cover in an acetic acid corrosion resistant piston rod;

fig. 4 is an enlarged schematic view of a structure a in fig. 2 of a piston rod resistant to acetic acid corrosion.

In the figure: 1. a piston rod body; 2. an end cap; 3. a through hole; 4. a first seal ring; 5. a threaded ring; 6. a fixed cover; 7. an annular thread block; 8. a first annular groove; 9. a dust ring; 10. an annular concave hole; 11. a threaded opening; 12. a third annular groove; 13. fixing the bolt; 14. a second annular groove; 15. a second seal ring; 16. an annular mounting plate; 17. and (7) mounting holes.

Detailed Description

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are used merely for convenience of description and for simplicity of description, and do not indicate or imply that the device or element being 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 the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or to implicitly indicate a number of the indicated technical features. Thus, a feature defined as "first," "second," etc. 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 otherwise specified.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art through specific situations.

Please refer to fig. 1-4, in the embodiment of the present invention, an acetic acid corrosion resistant piston rod, including the piston rod body 1, the surface of the piston rod body 1 is equipped with end cover 2, through-hole 3 has been seted up to the right flank of end cover 2, the inside of through-hole 3 is equipped with first sealing washer 4, the inner wall fixedly connected with screw ring 5 of through-hole 3, the inner circle threaded connection of screw ring 5 has annular thread piece 7, the left surface of annular thread piece 7 contacts with the right flank of first sealing washer 4, the right flank fixedly connected with fixed cover 6 of annular thread piece 7, annular shrinkage pool 10 has been seted up to the right flank of end cover 2, the left end of fixed cover 6 extends to the inside of annular shrinkage pool 10.

First annular groove 8 has been seted up to annular thread piece 7's inner circle, the inside of first annular groove 8 is equipped with dust ring 9, dust ring 9's inner circle contacts with the surface of the piston rod body 1, dust ring 9 through the inside dust ring that is equipped with of first annular groove 8, can seal between the piston rod body 1 and the end cover 2, can avoid the entering of dust, second annular groove 14 has been seted up to the upper surface of end cover 2, the inside of second annular groove 14 is equipped with second sealing washer 15, second sealing washer 15 through second annular groove 14 is equipped with, can seal between end cover 2 and the cylinder, reduce the seepage of gas or liquid.

Two screw thread mouths 11 have been seted up to the inner wall of annular shrinkage pool 10, the equal threaded connection of inner wall of two screw thread mouths 11 has fixing bolt 13, third annular groove 12 has been seted up to the surface of fixed cover 6, the one end that two fixing bolt 13 are close to each other all contacts with the inner wall of third annular groove 12, utilize the inside fixing bolt 13 that is equipped with of screw thread mouth 11, and with the cooperation of third annular groove 12, can deepen the fixed to fixed cover 6, will make more firm of fixed cover 6, the outer fixed surface of end cover 2 is connected with annular mounting panel 16, annular arrangement's mounting hole 17 has been seted up to the surface of annular mounting panel 16, utilize annular mounting panel 16 to be convenient for install between end cover 2 and the cylinder, inconvenient phenomenon appears when avoiding the installation.

The utility model discloses a theory of operation is: when the first sealing rings 4 are replaced, firstly, the two fixing bolts 13 are loosened, the clamping and fixing of the two fixing bolts 13 on the fixing cover 6 can be released, then, the fixing cover 6 is rotated anticlockwise, the annular thread blocks 7 can be driven to slowly move outwards from the inside of the through holes 3 until the annular thread blocks 7 are moved out, and then, the first sealing rings 4 in the through holes 3 can be taken out and can be quickly replaced;

when fixing after first sealing washer 4 is changed, with annular thread piece 7 at the inside clockwise rotation of screw ring 5, can make annular thread piece 7 remove to the inside of through-hole 3, until contacting with first sealing washer 4, and annular thread piece 7 rotates the in-process, also can drive fixed cover 6 and remove to the inside of annular shrinkage pool 10, then uses fixing bolt 13 to press from both sides tight fixedly to fixed cover 6 to the quick replacement to first sealing washer 4 has been accomplished.

The above-mentioned, only be the concrete implementation of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the inventive concept equivalent replacement or change, all should be covered within the protection scope of the present invention, to the person skilled in the art, it is obvious that the present invention is not limited to the details of the above-mentioned exemplary embodiment, and the present invention can be realized in other specific forms without departing from the spirit or the basic features of the present invention. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.

Claims (6)

1. The utility model provides a piston rod of nai acetic acid corrosion, includes the piston rod body (1), its characterized in that, the surface of the piston rod body (1) is equipped with end cover (2), through-hole (3) have been seted up to the right flank of end cover (2), the inside of through-hole (3) is equipped with first sealing washer (4), the inner wall fixedly connected with threaded ring (5) of through-hole (3), the inner circle threaded connection of threaded ring (5) has annular thread piece (7), the left surface of annular thread piece (7) contacts with the right flank of first sealing washer (4), the right flank fixedly connected with fixed cover (6) of annular thread piece (7), annular shrinkage pool (10) have been seted up to the right flank of end cover (2), the left end of fixed cover (6) extends to the inside of annular shrinkage pool (10).

2. The acetic acid corrosion resistant piston rod according to claim 1, characterized in that a first annular groove (8) is formed in an inner ring of the annular thread block (7), a dust ring (9) is arranged inside the first annular groove (8), and the inner ring of the dust ring (9) is in contact with an outer surface of the piston rod body (1).

3. The acetic acid corrosion resistant piston rod according to claim 1, characterized in that a second annular groove (14) is formed in the upper surface of the end cap (2), and a second sealing ring (15) is arranged inside the second annular groove (14).

4. The acetic acid corrosion resistant piston rod as claimed in claim 1, wherein two threaded openings (11) are formed in the inner wall of the annular concave hole (10), and a fixing bolt (13) is connected to the inner walls of the two threaded openings (11) in a threaded manner.

5. The acetic acid corrosion resistant piston rod according to claim 4, characterized in that the outer surface of the fixing cover (6) is provided with a third annular groove (12), and the ends of the two fixing bolts (13) close to each other are in contact with the inner wall of the third annular groove (12).

6. The acetic acid corrosion resistant piston rod according to claim 1, characterized in that an annular mounting plate (16) is fixedly connected to the outer surface of the end cap (2), and mounting holes (17) are formed in the outer surface of the annular mounting plate (16) and arranged in an annular shape.

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