CN210623559U

CN210623559U - Oil storage sealing assembly for piston rod

Info

Publication number: CN210623559U
Application number: CN201921825853.3U
Authority: CN
Inventors: 梁家林
Original assignee: Individual
Current assignee: Individual
Priority date: 2019-10-28
Filing date: 2019-10-28
Publication date: 2020-05-26
Anticipated expiration: 2029-10-28

Abstract

The utility model discloses an oil storage sealing assembly for a piston rod, which comprises an outer shell, a piston rod and an inner shell, wherein the lower ends of the outer shell and the inner shell are connected through a buckle, the piston rod is arranged in the middle of the inner shell, the inner surface and the outer surface of the inner shell are both inclined planes, the inner surface of the inner shell is tightly attached with the outer surface of the piston rod, and a water tank with a wide upper part and a narrow lower part is formed between the outer shell and the inner shell; the inner surface of the upper end of the inner shell is provided with a first corner opening, the outer surface of the upper end of the inner shell is provided with a second corner opening, the first corner opening is welded with a spring plate, and the second corner opening is provided with a plate body. This seal assembly is through the area of contact of increase sealing rubber circle and piston rod, and outside liquid inwards extrudees the clearance between the interior casing of reducing and the piston rod to the internal casing, improves sealing performance, tears the sealing washer after dismantling the second bolt and can dismantle, and not only sealing performance is high, and is convenient for assemble and dismantle.

Description

Oil storage sealing assembly for piston rod

Technical Field

The utility model relates to a seal assembly technical field especially relates to an oil-retaining seal assembly that piston rod was used.

Background

With the development of industrial technology, various hydraulic devices are used more and more widely, and various accessories are often used when the hydraulic devices are used, wherein a piston sealing piece is often arranged on a piston of a hydraulic cylinder for ensuring the sealing of reciprocating motion; however, the sealing performance of the existing piston sealing element cannot be greatly guaranteed, particularly, in the state that other liquid is filled outside the piston rod, the existing sealing element is sealed by mutually extruding in the end face direction, the external liquid has an upward buoyancy for each part of the assembly, the buoyancy reduces the extrusion force formed by the impact between the assemblies, the sealing performance is reduced, the sealing element is installed on the inner surface of the workpiece, which is in contact with each other, the sealing element is easy to damage due to long-time friction heat generation, and needs to be frequently replaced, and the replacement and installation difficulty is large.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide an oil-retaining seal assembly that piston rod was used possesses the dismouting of being convenient for, and problem among the prior art has been solved to the characteristics that sealing performance is good.

In order to achieve the above object, the utility model provides a following technical scheme: the oil storage sealing assembly for the piston rod comprises an outer shell, a piston rod and an inner shell, wherein the lower ends of the outer shell and the inner shell are connected through a buckle, the piston rod is installed in the middle of the inner shell, the inner surface and the outer surface of the inner shell are inclined planes, the inner surface of the inner shell is tightly attached to the outer surface of the piston rod, and a water tank with a wide upper part and a narrow lower part is formed between the outer shell and the inner shell; the utility model discloses a portable electronic device, including interior casing, first through-hole, second through-hole, third through-hole and second through-hole overlap each other, the middle part through connection of third through-hole and second through-hole has first bolt, one side of shell fragment is connected with annular rubber seal, the fourth through-hole has been seted up on the rubber seal, overlap each other between fourth through-hole and the first through-hole, and through connection has the second bolt.

Preferably, the rubber sealing ring is fixedly connected with the elastic sheet through glue, and the cross section of the rubber sealing ring is L-shaped.

Preferably, the second bolt is sequentially connected with a gasket, a rubber sealing ring and a plate body from top to bottom.

Preferably, the outer side wall of the piston rod is tightly attached to the inner surface of the rubber sealing ring.

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

the utility model discloses an oil-retaining sealing assembly for piston rod, the piston rod moves up and down along the upper port of interior casing, when the piston rod moves down, the port of interior casing forms the opening, for the fuel feeding, when the piston rod moves up and blocks up the upper port of inner casing, the surface butt of piston rod is on the internal surface of interior casing, and extrude rubber seal at the port department, rubber seal warp after the extrusion, extrude the shell fragment simultaneously, shift great deflection to the metal shell fragment, the area of contact of sealing rubber circle and piston rod increases, sealing performance improves, the outside basin holds outside liquid, outside liquid extrudees the interior casing inwards, the clearance between interior casing internal surface of interior casing and piston rod reduces after the interior casing receives the extrusion, further improve sealing performance, connect plate body and interior casing through first bolt locking, glue is coated on the surface of shell fragment, then with second bolt lock joint rubber seal and mounting panel, accomplish the equipment, tear the sealing washer after dismantling the second bolt and can dismantle, not only sealing performance is high, and be convenient for assemble and dismantle.

Drawings

FIG. 1 is a diagram illustrating an unused state of the present invention;

FIG. 2 is a diagram of the working state of the present invention;

FIG. 3 is an enlarged view of a portion A of FIG. 1 according to the present invention;

fig. 4 is a partially enlarged view of the point B in fig. 2 according to the present invention.

In the figure: 1. an outer housing; 2. a piston rod; 3. an inner housing; 31. a first corner opening; 32. a second corner opening; 33. a third through hole; 4. buckling; 5. a water tank; 6. a spring plate; 7. a plate body; 71. a first through hole; 72. a second through hole; 8. a first bolt; 9. a rubber seal ring; 91. a fourth via hole; 10. a second bolt; 11. and (7) a gasket.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1-2, an oil-storing sealing assembly for a piston rod includes an outer housing 1, a piston rod 2, an inner housing 3, the lower ends of the outer housing 1 and the inner housing 3 are connected by a buckle 4, the piston rod 2 is installed in the middle of the inner housing 3, the piston rod 2 moves up and down along the upper port of the inner housing 3, when the piston rod 2 moves down, the port of the inner housing 3 forms an opening for supplying oil, when the piston rod 2 moves up to block the upper port of the inner housing, sealing is performed, the inner and outer surfaces of the inner housing 3 are inclined planes to increase the contact area, the inner surface of the inner housing 3 is tightly attached to the outer surface of the piston rod 2, the outer sidewall of the piston rod 2 is tightly attached to the inner surface of a rubber sealing ring 9, a water groove 5 with a wide top and a narrow bottom is formed between the outer housing, the inner housing 3 is pressed to reduce the gap between the inner surface of the inner housing 3 and the piston rod 2, thereby further improving the sealing performance.

Referring to fig. 3-4, the inner surface of the upper end of the inner housing 3 is provided with a first corner opening 31, the outer surface of the upper end of the inner housing 3 is provided with a second corner opening 32, the first corner opening 31 is welded with a spring plate 6, the spring plate 6 is a bent metal copper sheet, the second corner opening 32 is provided with a plate body 7, the plate body 7 is provided with a first through hole 71 and a second through hole 72, the upper end of the inner housing 3 is provided with a third through hole 33, the third through hole 33 and the second through hole 72 are overlapped, the middle parts of the third through hole 33 and the second through hole 72 are connected with a first bolt 8 in a penetrating manner, the plate body 7 and the inner housing 3 are locked and connected through the first bolt 8, glue is coated on the surface of the spring plate 6, then the second bolt 10 is locked and connected with a rubber seal ring 9 and a mounting plate, the assembly is completed, the seal ring can be, one side of shell fragment 6 is connected with annular rubber seal 9, through glue fixed connection between rubber seal 9 and the shell fragment 6, and the cross-section of rubber seal 9 is L shape, the surface butt of piston rod 2 is on interior casing 3's internal surface, and extrude rubber seal 9 at the port department, rubber seal 9 receives the extrusion back deformation, extrude shell fragment 6 simultaneously, shift great deflection to metal shell fragment 6 on, the area of contact increase of sealing rubber circle and piston rod 2, sealing performance improves, fourth through-hole 91 has been seted up on the rubber seal 9, overlap each other between fourth through-hole 91 and the first through-hole 71, and through connection has second bolt 10, second bolt 10 has connected gradually gasket 11 from last to down, rubber seal 9 and plate body 7, gasket 11 increases the locking degree of second bolt 10.

The working principle is as follows: the piston rod 2 moves up and down along the upper port of the inner shell 3, when the piston rod 2 moves down, the port of the inner shell 3 forms an opening for supplying oil, when the piston rod 2 moves up to block the upper port of the inner shell, the outer surface of the piston rod 2 is abutted against the inner surface of the inner shell 3, and the rubber sealing ring 9 is extruded at the port, the rubber sealing ring 9 deforms after being extruded, meanwhile, the elastic sheet 6 is extruded, a larger deformation is transferred to the metal elastic sheet 6, the contact area between the sealing rubber ring and the piston rod 2 is increased, the sealing performance is improved, the external water tank 5 contains external liquid, the external liquid extrudes the inner shell 3 inwards, the gap between the inner surface of the inner shell 3 and the piston rod 2 is reduced after the inner shell 3 is extruded, the sealing performance is further improved, the plate body 7 and the inner shell 3 are locked and connected through the first bolt, then with second bolt 10 locking connection rubber seal 9 and mounting panel, accomplish the equipment, tear the sealing washer after dismantling second bolt 10 and can dismantle, not only sealing performance is high, and be convenient for assemble and dismantle.

In summary, the following steps: the utility model discloses an oil-retaining sealing assembly for piston rod, piston rod 2 moves up and down along the last port of interior casing 3, when piston rod 2 moves down, the port of interior casing 3 forms the opening, for the fuel feeding, when piston rod 2 moves up and blocks up the last port of inner casing, the surface butt of piston rod 2 is on the internal surface of interior casing 3, and extrude rubber seal 9 at the port department, rubber seal 9 is out of shape after the extrusion, extrude shell fragment 6 simultaneously, shift great deflection to metal shell fragment 6, the area of contact of sealing rubber circle and piston rod 2 increases, sealing performance improves, outside basin 5 holds outside liquid, outside liquid extrudees interior casing 3 inwards, the clearance between interior casing 3 internal surface and piston rod 2 is reduced after interior casing 3 receives the extrusion, further improve sealing performance, connect plate body 7 and interior casing 3 through first bolt 8 locking, glue is coated on the surface of the elastic sheet 6, then the second bolt 10 is in locking connection with the rubber sealing ring 9 and the mounting plate, the assembly is completed, the sealing ring is torn after the second bolt 10 is disassembled, the disassembly can be carried out, the sealing performance is high, and the assembly and the disassembly are convenient

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides an oil-retaining seal assembly that piston rod was used, includes shell body (1), piston rod (2), interior casing (3), its characterized in that: the lower ends of the outer shell (1) and the inner shell (3) are connected through a buckle (4), a piston rod (2) is installed in the middle of the inner shell (3), the inner surface and the outer surface of the inner shell (3) are inclined planes, the outer surface of the piston rod (2) is tightly attached to the inner surface of the inner shell (3), and a water tank (5) with a wide upper part and a narrow lower part is formed between the outer shell (1) and the inner shell (3); the inner wall of the inner shell (3) is provided with a first corner opening (31) on the inner surface of the upper end, a second corner opening (32) is arranged on the outer surface of the upper end of the inner shell (3), an elastic sheet (6) is welded at the position of the first corner opening (31), a plate body (7) is installed at the position of the second corner opening (32), a first through hole (71) and a second through hole (72) are arranged on the plate body (7), a third through hole (33) is arranged at the upper end of the inner shell (3), the third through hole (33) and the second through hole (72) are mutually overlapped, the middle parts of the third through hole (33) and the second through hole (72) are connected with a first bolt (8) in a penetrating manner, one side of the elastic sheet (6) is connected with an annular rubber sealing ring (9), a fourth through hole (91) is arranged on the rubber sealing ring (9), and the fourth through hole (91, and a second bolt (10) is connected in a penetrating way.

2. The oil retaining seal assembly for a piston rod of claim 1, wherein: the rubber sealing ring (9) is fixedly connected with the elastic sheet (6) through glue, and the cross section of the rubber sealing ring (9) is L-shaped.

3. The oil retaining seal assembly for a piston rod of claim 1, wherein: be equipped with gasket (11) between second bolt (10) and rubber seal (9), second bolt (10) are from last to having connected gradually gasket (11), rubber seal (9) and plate body (7) down.

4. The oil retaining seal assembly for a piston rod of claim 1, wherein: the outer side wall of the piston rod (2) is tightly attached to the inner surface of the rubber sealing ring (9).