CN211852366U

CN211852366U - Hydraulic cylinder check valve with stable performance

Info

Publication number: CN211852366U
Application number: CN202020270078.6U
Authority: CN
Inventors: 陈唐春; 曹小菁
Original assignee: Shanghai Qifan Mechanical Equipment Co ltd
Current assignee: Shanghai Qifan Mechanical Equipment Co ltd
Priority date: 2020-03-07
Filing date: 2020-03-07
Publication date: 2020-11-03
Anticipated expiration: 2030-03-07

Abstract

The utility model discloses a pneumatic cylinder check valve of stable performance, including the valve casing, oil inlet and oil drain port have been seted up respectively outward at the both ends of valve casing, and the both ends outer wall of valve casing has all cup jointed the flange, the installing port has all been seted up to the both sides of valve casing one side outer wall, and the inner wall of two installing ports has cup jointed inlet valve and oil drain valve respectively, the both sides inner wall of valve casing is fixed with the sealed tube of same toper structure through the connecting rod, and one side outer wall of sealed tube has seted up two round mouths, two the inner wall of round mouth all is provided with supporting mechanism, and the bolt fastening is passed through to two supporting mechanism's one end has same sealing plug. The utility model discloses the relative position of piston is guaranteed to injection hydraulic oil in the sealed tube, sets up supporting mechanism again on the piston, controls the sealing plug through two kinds of modes, avoids the spring to lose the effect and is that the check valve can't use, has solved the problem that current check valve life is broken.

Description

Hydraulic cylinder check valve with stable performance

Technical Field

The utility model relates to a pneumatic cylinder technical field especially relates to a pneumatic cylinder check valve of stable performance.

Background

The hydraulic cylinder is a hydraulic actuator which converts hydraulic energy into mechanical energy and performs linear reciprocating motion (or swinging motion). It has simple structure and reliable operation. When it is used to implement reciprocating motion, it can omit speed-reducing device, and has no transmission gap, and its motion is stable, so that it can be extensively used in various mechanical hydraulic systems. The output force of the hydraulic cylinder is in direct proportion to the effective area of the piston and the pressure difference between the two sides of the effective area; the hydraulic cylinder is basically composed of a cylinder barrel and a cylinder cover, a piston and a piston rod, a sealing device, a buffering device and an exhaust device. The damping device and the exhaust device are determined according to specific application occasions, and other devices are necessary.

The check valve that uses on the pneumatic cylinder is in order to prevent that hydraulic oil backward flow from resulting in hydraulic motor's damage, and current check valve is all through spring drive, and the spring has long non return effect decline of certain life's time.

SUMMERY OF THE UTILITY MODEL

The utility model aims at solving the defects existing in the prior art and providing a hydraulic cylinder check valve with stable performance.

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

a hydraulic cylinder check valve with stable performance comprises a valve casing, wherein an oil inlet and an oil outlet are respectively arranged outside two ends of the valve casing, the outer walls of the two ends of the valve casing are respectively sleeved with a flange, the two sides of the outer wall of one side of the valve casing are respectively provided with an installation opening, and the inner walls of the two mounting ports are respectively sleeved with an oil inlet valve and an oil discharge valve, the inner walls of two sides of the valve casing are fixed with a sealing pipe with the same conical structure through connecting rods, and the outer wall of one side of the sealing tube is provided with two round mouths, the inner walls of the two round mouths are both provided with a supporting mechanism, one end of each of the two supporting mechanisms is fixed with a same sealing plug through a bolt, the inner walls of the two sides of the sealing tube are connected with a same piston in a sliding manner, one end of each of the two supporting mechanisms is connected with the piston, through holes are respectively formed in two sides of the outer wall of one side of the sealing pipe, and the two through holes are respectively connected to the oil inlet valve and the oil discharge valve through pipelines.

Preferably, the supporting mechanism comprises an installation pipe with an opening at one end, and the inner walls of two sides of the installation pipe are connected with the same supporting column with a T-shaped structure in a sliding manner.

Preferably, the outer wall of one side of the support column is fixed with a spring through a bolt, and one end of the spring is fixed on the installation pipe through a bolt.

Preferably, one end of the supporting column is fixed on the sealing plug through a bolt.

Preferably, a circular groove is formed in the outer wall of one side of the valve casing, and a protective cover is hinged to the inner wall of one side of the circular groove.

Preferably, the inner wall of the circular groove is fixed with a pressure gauge through a bolt, and the pressure gauge is connected to the sealing pipe through a pipeline.

Preferably, the specification of the sealing plug is matched with that of the oil inlet.

The utility model has the advantages that:

the stable pneumatic cylinder check valve of nature performance through set up the sealed tube in the valve casing, injects hydraulic oil again in the sealed tube and guarantees the relative position of piston, sets up supporting mechanism again on the piston, controls the sealing plug through two kinds of modes, avoids the spring to lose the effect and is the unable use of check valve, is convenient for monitor fluid in the sealed tube through the manometer, avoids the oil pressure to reduce and leads to the piston to translocate, has solved the problem that current check valve life is short.

Drawings

Fig. 1 is a schematic structural view of a hydraulic cylinder check valve with stable performance according to the present invention;

fig. 2 is a schematic cross-sectional structural view of a hydraulic cylinder check valve with stable performance according to the present invention;

fig. 3 is the utility model provides a pneumatic cylinder check valve's of stable performance seal tube structure schematic diagram.

In the figure: the device comprises a valve shell 1, a flange 2, a pressure gauge 3, a protective cover 4, an oil inlet valve 5, an oil discharge valve 6, a sealing tube 7, a supporting mechanism 8, a sealing plug 9, a piston 10, an installation tube 11, a spring 12 and a supporting column 13.

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.

Referring to fig. 1-3, a hydraulic cylinder check valve with stable performance comprises a valve casing 1, an oil inlet and an oil outlet are respectively arranged outside two ends of the valve casing 1, flanges 2 are respectively sleeved on the outer walls of the two ends of the valve casing 1, mounting ports are respectively arranged on two sides of the outer wall of one side of the valve casing 1, an oil inlet valve 5 and an oil outlet valve 6 are respectively sleeved on the inner walls of the two mounting ports, a sealing pipe 7 with the same conical structure is fixed on the inner walls of the two sides of the valve casing 1 through connecting rods, two round ports are arranged on the outer wall of one side of the sealing pipe 7, supporting mechanisms 8 are respectively arranged on the inner walls of the two round ports, one end of each supporting mechanism 8 is fixed with the same sealing plug 9 through a bolt, the inner walls of the two sides of the sealing pipe 7 are slidably connected with the same piston 10, one end of each, and two through-holes are respectively connected on inlet valve 5 and oil drain valve 6 through the pipeline, supporting mechanism 8 includes that one end has open-ended installation pipe 11, and the both sides inner wall sliding connection of installation pipe 11 has the support column 13 of same T shape structure, one side outer wall of support column 13 has spring 12 through the bolt fastening, and the one end of spring 12 passes through the bolt fastening on installation pipe 11, the bolt fastening is passed through on sealing plug 9 to the one end of support column 13, the circular slot has been seted up to one side outer wall of valve casing 1, and one side inner wall of circular slot articulates there is visor 4, the inner wall of circular slot passes through the bolt fastening manometer 3, and manometer 3 passes through pipe connection on sealing pipe 7, the specification of sealing plug 9 and the specification phase-match of oil inlet.

The working principle is as follows: when the check valve is used, proper hydraulic oil is injected into the sealing pipe 7 through the oil inlet valve 5 to drive the relative position of the piston 10, the oil pressure is monitored through the pressure gauge 3, the sealing plug 9 is driven through the supporting mechanism 8 on the piston 10 and the spring 12 in the supporting mechanism 8, the sealing plug 9 can be driven in a mode of discharging the hydraulic oil when the spring 9 loses effect, the sealing plug 9 is controlled in two modes, and the situation that the check valve cannot be used when the spring 12 loses effect is avoided.

The above, 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 utility model, the concept of which is equivalent to replace or change, should be covered within the protection scope of the present invention.

Claims

1. The hydraulic cylinder check valve with stable performance comprises a valve casing (1) and is characterized in that oil inlets and oil discharge ports are respectively formed outside two ends of the valve casing (1), flanges (2) are respectively sleeved on outer walls of two ends of the valve casing (1), mounting ports are respectively formed in two sides of an outer wall of one side of the valve casing (1), an oil inlet valve (5) and an oil discharge valve (6) are respectively sleeved on inner walls of the two mounting ports, sealing pipes (7) of the same conical structure are fixed on inner walls of two sides of the valve casing (1) through connecting rods, two round ports are formed in an outer wall of one side of each sealing pipe (7), supporting mechanisms (8) are arranged on inner walls of the two round ports, one end of each supporting mechanism (8) is fixed with the same sealing plug (9) through bolts, and two inner walls of two sides of each sealing pipe (7) are slidably connected with the same piston, two the one end of supporting mechanism (8) is all connected on piston (10), the through-hole has been seted up respectively to the both sides of sealed tube (7) one side outer wall, and two through-holes are respectively through pipe connection on inlet valve (5) and oil drain valve (6).

2. The hydraulic cylinder check valve of claim 1, characterized in that the support mechanism (8) comprises a mounting tube (11) with an opening at one end, and the inner walls of the two sides of the mounting tube (11) are slidably connected with a supporting column (13) with the same T-shaped structure.

3. The hydraulic cylinder check valve of claim 2, characterized in that a spring (12) is fixed on the outer wall of one side of the supporting column (13) through a bolt, and one end of the spring (12) is fixed on the mounting pipe (11) through a bolt.

4. A hydraulic cylinder check valve with stable performance according to claim 3, characterized in that one end of the support pillar (13) is fixed on the sealing plug (9) by bolts.

5. The hydraulic cylinder check valve of claim 1, characterized in that one side of the valve casing (1) is provided with a circular groove, and one side of the circular groove is hinged with a protective cover (4).

6. The hydraulic cylinder check valve of claim 5, characterized in that the inner wall of the circular groove is fixed with a pressure gauge (3) through bolts, and the pressure gauge (3) is connected to the sealing pipe (7) through a pipeline.

7. A hydraulic cylinder check valve with stable performance according to claim 1, characterized in that the specification of the sealing plug (9) is matched with the specification of the oil inlet.