CN215762545U

CN215762545U - Air cylinder capable of effectively preventing liquid leakage

Info

Publication number: CN215762545U
Application number: CN202122237494.3U
Authority: CN
Inventors: 殷小刚
Original assignee: Yangzhou Liansen Hydraulic Machinery Co ltd
Current assignee: Yangzhou Liansen Hydraulic Machinery Co ltd
Priority date: 2021-09-16
Filing date: 2021-09-16
Publication date: 2022-02-08
Anticipated expiration: 2031-09-16

Abstract

The utility model discloses an air cylinder capable of effectively preventing liquid leakage, and particularly relates to the technical field of air cylinders. According to the air cylinder capable of effectively preventing liquid leakage, the first sealing ring is composed of the two half rings and the metal ring, the limiting block is arranged on the metal ring, so that the two half rings can be conveniently aligned and fixed, meanwhile, the sealing ring is supported without deformation after aging, the air tightness in the air cylinder is continuously maintained, and the maintenance cost is reduced.

Description

Air cylinder capable of effectively preventing liquid leakage

Technical Field

The utility model relates to the technical field of cylinders, in particular to a cylinder capable of effectively preventing liquid leakage.

Background

The air in the air cylinder is a metal workpiece which converts heat energy into mechanical energy through expansion, the air is compressed by the guide piston in the air cylinder to continuously increase the pressure, and the guide piston is forced to do linear reciprocating motion in the air cylinder, and the principle of the air cylinder comes from a cannon.

The general cylinder has the following disadvantages: in prior art, the sealing member in the jar can make the ageing deformation of sealing member after long-time work owing to not supporting, and the gas tightness variation leads to the interior lubricating oil of jar to leak, and two inside walls of piston body and its installation's sealing member are strikeed easily simultaneously increase the impaired probability of piston body to improve working cost.

SUMMERY OF THE UTILITY MODEL

The utility model mainly aims to provide a cylinder capable of effectively preventing liquid leakage, which can effectively solve the problems in the background art.

In order to achieve the purpose, the utility model adopts the technical scheme that:

the utility model provides a can effectively prevent cylinder of liquid leakage, includes the cylinder, the left end fixed mounting of cylinder has the left side lid, the left end chamber has been seted up at the right-hand member middle part of left side lid, the inlet port has been seted up at the surface middle part of left side lid, the piston chamber that runs through its left and right sides is seted up to the inside of cylinder, the inside in piston chamber is provided with piston rod and piston body, the left end and the right-hand member of piston body all fixed mounting have the second sealing washer, two the one end that the second sealing washer was kept away from each other fixed mounting respectively has first buffer layer and second buffer layer, the right-hand member fixed mounting of cylinder has the right side lid, the right side chamber that runs through its left and right sides is seted up to the inside of right side lid, the internal surface left part and the internal surface right part in right side lid chamber do not fixed mounting have first sealing washer and uide bushing, first sealing washer is by first half circle, a circle, The second half circle and the metal ring, and the middle part of the outer surface of the right side cover is provided with an air outlet.

Preferably, the diameters of the left cover cavity and the right cover cavity are smaller than the diameter of the piston cavity, and the air inlet hole is communicated with the air outlet hole through the left cover cavity, the piston cavity and the right cover cavity.

Preferably, the left end of the piston rod penetrates through the first sealing ring and the guide sleeve and extends to the outside of the left side cover, and the left end of the piston rod penetrates through the first buffer layer and the second sealing ring and is fixedly installed on the right end face of the piston body.

Preferably, the left end of the first sealing ring and the right end of the guide sleeve are respectively located on the same vertical plane with the left end and the right end of the right side cover, and the right end of the first sealing ring and the left end of the guide sleeve are respectively located on the left side and the right side of the air outlet hole.

Preferably, the opposite surfaces of the first half ring and the metal ring are provided with fixing grooves, the outer surface and the inner surface of each fixing groove are symmetrically provided with a plurality of T-shaped limiting grooves, and the outer surface and the inner surface of the metal ring are fixedly provided with a plurality of T-shaped limiting blocks matched with the T-shaped limiting grooves for use.

Preferably, first cavity and second cavity have been seted up respectively to the inside of first buffer layer and second buffer layer, a lateral wall that first cavity and second cavity kept away from each other is fixed mounting respectively has first spring and second spring, the one end that first spring and second spring are close to each other is fixed mounting respectively at the right-hand member and the left end that lie in two second sealing washers with one side, first spring winding is in the surface left part of piston rod.

Preferably, the horizontal height of the second buffer layer is greater than the horizontal height of the left cover cavity, the outer diameter of the second buffer layer is smaller than the inner diameter of the left cover cavity, and the outer diameter of the first buffer layer is smaller than the diameter of the piston cavity and greater than the diameter of the right cover cavity.

Preferably, the second buffer layer and the first buffer layer are flexible graphite plate buffer sleeves.

Compared with the prior art, the utility model has the following beneficial effects:

the utility model discloses an air cylinder capable of effectively preventing liquid leakage, wherein a first sealing ring is composed of two half rings and a metal ring, a T-shaped limiting block is arranged on the metal ring, the two half rings are not only convenient to align and fix, but also the sealing ring is supported to be not deformed after the sealing ring is aged, the air tightness in the cylinder is continuously maintained, two buffer layers are continuously arranged on the first sealing ring at two ends of a piston body, the first sealing ring is provided with a flexible graphite material, a spring is arranged in the first sealing ring, the toughness of the buffer layers is continuously increased, the piston body is prevented from directly impacting a left side cover and a right side cover, the probability of damage to the piston body is reduced, and therefore the working cost is reduced.

Drawings

Fig. 1 is a schematic view showing an overall structure of a cylinder according to the present invention, which is effective in preventing liquid leakage;

FIG. 2 is a schematic connection diagram of the right side cover, the guide sleeve and the first sealing ring;

FIG. 3 is an exploded view of the first seal ring;

FIG. 4 is a cutaway schematic view of the left side cover, cylinder barrel and right side cover;

fig. 5 is a cross-sectional view of the first buffer layer and the second buffer layer.

In the figure: 1. a cylinder barrel; 11. a piston cavity; 2. a right side cover; 21. a right cap cavity; 3. a left side cover; 31. a left cap cavity; 4. an air inlet; 5. an air outlet; 6. a guide sleeve; 7. a piston rod; 8. a first seal ring; 81. a first half turn; 82. a second half turn; 821. fixing grooves; 822. a T-shaped limiting groove; 83. a metal ring; 831. a T-shaped limiting block; 9. a piston body; 91. a second seal ring; 92. a first buffer layer; 921. a first cavity; 922. a first spring; 93. a second buffer layer; 931. a second cavity; 932. a second spring.

Detailed Description

In order to make the technical means, the creation characteristics, the achievement purposes and the effects of the utility model easy to understand, the utility model is further described with the specific embodiments.

In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "front", "rear", "both ends", "one end", "the other end", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "disposed," "connected," and the like are to be construed broadly, such as "connected," which may be 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 meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

As shown in figures 1-5, an air cylinder capable of effectively preventing liquid leakage comprises a cylinder barrel 1, a left side cover 3 is fixedly installed at the left end of the cylinder barrel 1, a left cover cavity 31 is arranged at the middle part of the right end of the left side cover 3, an air inlet 4 is arranged at the middle part of the outer surface of the left side cover 3, a piston cavity 11 penetrating through the left side and the right side of the cylinder barrel 1 is arranged inside the cylinder barrel 1, a piston rod 7 and a piston body 9 are arranged inside the piston cavity 11, second sealing rings 91 are fixedly installed at the left end and the right end of the piston body 9, a first buffer layer 92 and a second buffer layer 93 are respectively and fixedly installed at the ends, far away from each other, of the two second sealing rings 91, a right side cover 2 is fixedly installed at the right end of the cylinder barrel 1, a right cover cavity 21 penetrating through the left side and the right side of the right cover 2 is arranged inside the cylinder barrel, a first sealing ring 8 and a guide sleeve 6 are respectively and fixedly installed at the left part and the inner surface and the right part of the right cover cavity 21, the first sealing ring 8 consists of a first half ring 81, a second half ring 82 and a metal ring 83, and the middle part of the outer surface of the right side cover 2 is provided with an air outlet 5.

The diameters of the left cover cavity 31 and the right cover cavity 21 are smaller than the diameter of the piston cavity 11, and the air inlet hole 4 is communicated with the air outlet hole 5 through the left cover cavity 31, the piston cavity 11 and the right cover cavity 21; the left end of the piston rod 7 penetrates through the first sealing ring 8 and the guide sleeve 6 and extends to the outside of the left side cover 3, and the left end of the piston rod 7 penetrates through the first buffer layer 92 and the second sealing ring 91 and is fixedly arranged on the right end face of the piston body 9; the left end of the first sealing ring 8 and the right end of the guide sleeve 6 are respectively positioned on the same vertical plane with the left end and the right end of the right side cover 2, and the right end of the first sealing ring 8 and the left end of the guide sleeve 6 are respectively positioned on the left side and the right side of the air outlet 5; opposite surfaces of the first half ring 81 and the metal ring 83 are respectively provided with a fixing groove 821, the outer surface and the inner surface of the fixing groove 821 are respectively symmetrically provided with a plurality of T-shaped limiting grooves 822, and the outer surface and the inner surface of the metal ring 83 are respectively fixedly provided with a plurality of T-shaped limiting blocks 831 matched with the T-shaped limiting grooves 822 for use; air enters the left cover cavity 31 from the air inlet hole 4, the piston body 9 and the piston rod 7 are pushed to move rightwards, the guide sleeve 6 ensures that the moving track of the piston rod 7 does not change, the first sealing ring 8 protects the sealing performance of the piston rod 7 during movement, and even if the piston rod moves for a long time, the first sealing ring 8 which is fixedly supported by the metal ring 83 in the piston rod does not deform, so that the risk of lubricating oil leakage is reduced, and the maintenance cost is reduced.

A first cavity 921 and a second cavity 931 are respectively formed inside the first buffer layer 92 and the second buffer layer 93, a first spring 922 and a second spring 932 are respectively and fixedly mounted on one side wall of the first cavity 921 and one side wall of the second cavity 931, which are far away from each other, one ends of the first spring 922 and the second spring 932, which are close to each other, are respectively and fixedly mounted at the right end and the left end of the two second sealing rings 91 positioned on the same side, and the first spring 922 is wound on the left part of the outer surface of the piston rod 7; the horizontal height of the second buffer layer 93 is greater than that of the left cap cavity 31, the outer diameter of the second buffer layer 93 is less than the inner diameter of the left cap cavity 31, and the outer diameter of the first buffer layer 92 is less than the diameter of the piston cavity 11 and greater than the diameter of the right cap cavity 21; the second buffer layer 93 and the first buffer layer 92 are both flexible graphite plate buffer sleeves; when piston body 9 carries out linear reciprocating motion, second buffer layer 93 and first buffer layer 92 are always the left side wall and the right side wall of one step of striking piston chamber 11 earlier, avoid piston body 9 directly to strike the lateral wall and take place to damage, and the buffer layer of making by flexible graphite material installs second spring 932 and first spring 922 inside second cavity 931 and second spring 932 respectively, further increases the toughness of buffer layer, improves the life of buffer layer to reduce piston body 9's working cost.

The working principle of the utility model is as follows: at first, air enters from the air inlet hole 4, then enters the piston cavity 11 through the left cover cavity 31 to push the piston body 9 and the piston rod 7 to move rightwards, the first buffer layer 92 impacts the right side wall of the piston cavity 11 first, the impact of the piston body 9 is relieved under the action of the first spring 922 inside the first buffer layer, the damage to the piston body 9 is avoided, the guide sleeve 6 guarantees the moving track of the piston rod 7, the first sealing ring 8 fixedly supported by the metal ring 83 inside cannot deform even if working for a long time, the risk of lubricating oil leakage is reduced, and the maintenance cost of the air cylinder is reduced.

The foregoing shows and describes the general principles and broad features of the present invention and advantages thereof. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the utility model as claimed. The scope of the utility model is defined by the appended claims and equivalents thereof.

Claims

1. A cylinder capable of effectively preventing liquid leakage comprises a cylinder barrel (1), and is characterized in that: the left end fixed mounting of cylinder (1) has left side lid (3), left side lid chamber (31) have been seted up at the right-hand member middle part of left side lid (3), inlet port (4) have been seted up at the surface middle part of left side lid (3), piston chamber (11) that run through its left and right sides are seted up to the inside of cylinder (1), the inside of piston chamber (11) is provided with piston rod (7) and piston body (9), the equal fixed mounting of left end and right-hand member of piston body (9) has second sealing washer (91), two the one end that second sealing washer (91) kept away from each other is fixed mounting respectively has first buffer layer (92) and second buffer layer (93), the right-hand member fixed mounting of cylinder (1) has right side lid (2), right side lid chamber (21) that run through its left and right sides are seted up to the inside of right side lid (2), the interior surface left part and the interior surface right part of right side lid chamber (21) do not fixed mounting have first sealing washer (8) and direction The sealing structure comprises a sleeve (6), wherein the first sealing ring (8) is composed of a first half ring (81), a second half ring (82) and a metal ring (83), and an air outlet hole (5) is formed in the middle of the outer surface of the right side cover (2).

2. The cylinder capable of effectively preventing leakage of liquid according to claim 1, wherein: the diameters of the left cover cavity (31) and the right cover cavity (21) are smaller than the diameter of the piston cavity (11), and the air inlet holes (4) are communicated with the air outlet holes (5) through the left cover cavity (31), the piston cavity (11) and the right cover cavity (21).

3. The cylinder capable of effectively preventing leakage of liquid according to claim 1, wherein: the left end of the piston rod (7) penetrates through the first sealing ring (8) and the guide sleeve (6) and extends to the outside of the left side cover (3), and the left end of the piston rod (7) penetrates through the first buffer layer (92) and the second sealing ring (91) and is fixedly installed on the right end face of the piston body (9).

4. A cylinder capable of effectively preventing a liquid leakage according to claim 3, wherein: the left end of first sealing washer (8) and the right-hand member of uide bushing (6) are located same vertical plane with the left end and the right-hand member of right side lid (2) respectively, the right-hand member of first sealing washer (8) and the left end of uide bushing (6) are located the left side and the right side of venthole (5) respectively.

5. The cylinder capable of effectively preventing leakage of liquid according to claim 1, wherein: fixed slot (821) have all been seted up to the opposite face of first half circle (81) and ferrule (83), a plurality of T type limit slot (822) have all been seted up to the surface and the internal surface of fixed slot (821) symmetry, the surface and the internal surface of ferrule (83) all fixed mounting have a plurality of and T type limit slot (822) cooperation T type limit block (831) of using.

6. The cylinder capable of effectively preventing leakage of liquid according to claim 1, wherein: first cavity (921) and second cavity (931) have been seted up respectively to the inside of first buffer layer (92) and second buffer layer (93), a lateral wall that first cavity (921) and second cavity (931) kept away from each other is fixed mounting respectively has first spring (922) and second spring (932), the one end that first spring (922) and second spring (932) are close to each other is fixed mounting respectively at the right-hand member and the left end that lie in two second sealing washer (91) with one side, first spring (922) twines in the surface left part of piston rod (7).

7. The cylinder capable of effectively preventing leakage of liquid according to claim 6, wherein: the level of second buffer layer (93) is greater than the level of left lid chamber (31), the external diameter of second buffer layer (93) is less than the internal diameter of left lid chamber (31), the external diameter of first buffer layer (92) is less than the diameter of piston chamber (11) and is greater than the diameter of right lid chamber (21).

8. The cylinder capable of effectively preventing leakage of liquid according to claim 6, wherein: the second buffer layer (93) and the first buffer layer (92) are flexible graphite plate buffer sleeves.