CN215949981U

CN215949981U - Anti-leakage hydraulic reversing valve

Info

Publication number: CN215949981U
Application number: CN202121761662.2U
Authority: CN
Inventors: 徐丹; 邹彦; 周华东
Original assignee: Dalian Fuchuan Packaging Material Co ltd
Current assignee: Dalian Fuchuan Packaging Material Co ltd
Priority date: 2021-07-30
Filing date: 2021-07-30
Publication date: 2022-03-04
Anticipated expiration: 2031-07-30

Abstract

The utility model discloses a leakage-proof hydraulic reversing valve, which comprises a pump body, wherein the middle part of the pump body is provided with a pump body inner hole, the inner side wall of the pump body inner hole is provided with a convex pattern and a clamping key, a rotating valve core shaft is arranged in the pump body inner hole in a penetrating way, the rotating valve core shaft is provided with an assembling groove corresponding to the convex pattern, the rotating valve core shaft is provided with a clamping key groove matched with the clamping key, and the lower side of the rotating valve core shaft is provided with a screw. And improves economic benefits.

Description

Anti-leakage hydraulic reversing valve

Technical Field

The utility model relates to the technical field of hydraulic valves, in particular to a leakage-proof hydraulic reversing valve.

Background

The hydraulic reversing valve used for controlling the direction or flow of fluid in a hydraulic system is widely applied and has a plurality of types, the hydraulic reversing valve is divided into electric, hydraulic, electro-hydraulic and the like according to an operation mode, and the hydraulic reversing valve has a plurality of forms of a slide valve, a rotary valve and the like according to the structure of the valve.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a leakage-proof hydraulic reversing valve, which aims to solve the problems that whether the working performance of an oil pump reversing valve in the existing hydraulic reversing system of a truck cab is reliable, whether oil circuit switching is flexible and whether cab lifting can be correctly controlled are main considerations for oil pump design, but because a rotary valve core has structural defects, the problems of cut damage, difficult operation, inaccurate limit and the like of a sealing gasket are easily caused, and the use performance of an oil pump is reduced.

In order to achieve the purpose, the utility model provides the following technical scheme: the utility model provides a prevent leaking hydraulic reversing valve, includes the pump body, the middle part of the pump body is provided with pump body hole, be provided with burr and card key on the inside wall of pump body hole, run through in the pump body hole and be provided with the pivot axle, the pivot epaxial be provided with the corresponding assembly slot of burr, the pivot epaxial be provided with card key assorted card keyway, the downside of pivot axle is provided with the screw, the downside of screw is provided with the shield, be provided with the intercommunication on the lateral wall of the pump body the oil absorption hole of pump body hole, the inner chamber of pump body hole in oil absorption hole corresponds the department and is provided with sealed the pad.

Preferably, the fitting groove is an O-ring fitting groove.

Preferably, the outer diameter of the dust cover is equal to the diameter of the inner hole of the pump body.

Preferably, a handle is arranged at the end of the rotating valve shaft on the outer side part of the inner hole of the pump body.

Preferably, a baffle is arranged on the side wall of the pump body on the protruding side of the rotary valve shaft, and the baffle fixes the rotary valve shaft.

Compared with the prior art, the utility model has the beneficial effects that: according to the leakage-proof hydraulic reversing valve provided by the utility model, the mounting clamping keys and the baffle are additionally arranged on the pump body and the inner hole of the pump body, the strength of the limiting part is increased, the limiting is more reliable, the operation is labor-saving through the arranged handle, the condition that the sealing gasket is scrapped due to the structural limitation and the assembly difficulty of a product is avoided, the phenomenon of leakage inside and outside the oil pump is also solved, the reliability and the comfort level of the reversing operation are improved, and the economic benefit is improved.

Drawings

FIG. 1 is a schematic cross-sectional view of the present invention;

FIG. 2 is a cross-sectional schematic view of a rotary valve spool;

fig. 3 is an enlarged schematic view of a portion a in fig. 1.

In the figure: 1-pump body, 2-pump body inner hole, 3-convex pattern, 4-clamping key, 5-rotating valve mandrel, 6-assembly groove, 7-clamping key groove, 8-screw, 9-dust cover, 10-oil suction hole, 11-sealing gasket, 12-handle and 13-baffle.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1-3, the present invention provides a technical solution: a leakage-proof hydraulic reversing valve comprises a pump body 1, a pump body inner hole 2 is arranged in the middle of the pump body 1, a convex pattern 3 and a clamping key 4 are arranged on the inner side wall of the pump body inner hole 2, the convex pattern 3 and the clamping key 4 are regularly distributed on the inner side of the pump body inner hole 2, a rotary valve core shaft 5 penetrates through the pump body inner hole 2, an assembly groove 6 corresponding to the convex pattern 3 is arranged on the rotary valve core shaft 5, a clamping key groove 7 matched with the clamping key 4 is arranged on the rotary valve core shaft 5, the rotary valve core shaft 5 can be matched with the convex pattern 3 through the groove 6, the clamping key groove 7 can be matched with the clamping key 4, the rotary valve core shaft 5 is reliably attached after being screwed in the pump body inner hole 2 and is not loosened any more, a screw 8 is arranged on the lower side of the rotary valve core shaft 5, a dust cover 9 is arranged on the lower side of the screw 8, the dust cover 9 is fixed in the pump body inner hole 2 through a preset steel wire retaining ring, the probability that a sealing gasket 11 is reduced, an oil suction hole 10 communicated with the inner hole 2 of the pump body is arranged on the side wall of the pump body 1, and a sealing gasket 11 is arranged in the inner cavity of the inner hole 2 of the pump body at the position corresponding to the oil suction hole 10.

Specifically, the fitting groove 6 is an O-ring fitting groove.

Specifically, the outer diameter of the dust cap 9 is equal to the diameter of the pump body inner bore 2.

Specifically, the rotary valve core shaft 5 is provided with a handle 12 at the end of the outer part of the pump body inner hole 2.

Specifically, the pump body 1 is provided with a baffle 13 on a side wall of the protruding side of the rotary valve shaft 5, and the baffle 13 fixes the rotary valve shaft 5.

The working principle is as follows: the installation clamping keys 4 and the baffle 13 are additionally arranged on the pump body 1 and the pump body inner hole 2, so that the strength of the limiting part is increased, the rotating valve shaft 5 is reliably attached after being screwed down in the pump body inner hole 2, and looseness is not generated any more. Simultaneously increase shield 9 at the lower extreme of screw 8, be fixed in pump body hole 2 with predetermined steel wire retaining ring, reduce the sealed probability of filling up 11 and being cut, make the manipulation of whole device more laborsaving through the handle 12 that sets up, avoided leading to sealed 11 condemned circumstances of filling up to appear because of product structure restriction and assembly difficulty, still solved the leakage phenomenon of the inside and outside of the pump body 1 simultaneously.

In the description of the present invention, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral part; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

The standard parts used in the utility model can be purchased from the market, the special-shaped parts can be customized according to the description of the specification and the accompanying drawings, the specific connection mode of each part adopts conventional means such as bolts, rivets, welding and the like mature in the prior art, the machines, the parts and equipment adopt conventional models in the prior art, and the circuit connection adopts the conventional connection mode in the prior art, so that the detailed description is omitted.

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 utility model, the scope of which is defined in the appended claims and their equivalents.

Claims

1. A leak-proof hydraulic directional valve is characterized in that: including the pump body (1), the middle part of the pump body (1) is provided with pump body hole (2), be provided with burr (3) and card key (4) on the inside wall of pump body hole (2), run through being provided with in pump body hole (2) and change spool axle (5), be provided with on change spool axle (5) with corresponding assembly slot (6) of burr (3), be provided with on change spool axle (5) with card key (4) assorted card keyway (7), the downside of change spool axle (5) is provided with screw (8), the downside of screw (8) is provided with shield (9), be provided with the intercommunication on the lateral wall of the pump body (1) oil absorption hole (10) of pump body hole (2), the inner chamber of pump body hole (2) in oil absorption hole (10) correspond the department and are provided with sealed pad (11).

2. A leak resistant hydraulic directional control valve as set forth in claim 1, wherein: the assembling groove (6) is an O-shaped ring assembling groove.

3. A leak resistant hydraulic directional control valve as set forth in claim 1, wherein: the outer diameter of the dustproof cover (9) is equal to the diameter of the inner hole (2) of the pump body.

4. A leak resistant hydraulic directional control valve as set forth in claim 1, wherein: the end of the rotating valve mandrel (5) on the outer side part of the pump body inner hole (2) is provided with a handle (12).

5. A leak resistant hydraulic directional control valve as set forth in claim 1, wherein: the side wall of the pump body (1) on the protruding side of the rotating valve shaft (5) is provided with a baffle (13), and the baffle (13) fixes the rotating valve shaft (5).