CN106706231A - Dynamic sealing performance detection device of three-section sealing component - Google Patents

Abstract

The invention provides a dynamic sealing performance detection device of a three-section sealing component. The dynamic sealing performance detection device comprises a cylinder, a supporting frame, a left end cap, a right end cap, an active guide rod, a driven guide rod, a three-section combined rod and an oil pressure gauge. The external wall of the cylinder is provided with an oil pressure gauge interface and an oil inlet interface which are communicated to the internal cavity of the cylinder. The oil pressure gauge is connected on the oil pressure gauge interface. The three-section combined rod is installed in the internal hole of the cylinder through annular bosses arranged at the edges of the two ends of the three-section combined rod. The annular bosses and the internal wall of the cylinder are sealed through a sealing component to be detected. An annularly cylindrical oil chamber is formed between the two annular bosses, and the oil pressure gauge interface and the oil inlet interface on the cylinder are communicated to the annularly cylindrical oil chamber. The right end of the active guide rod is installed on the right end cap in a supporting way, and the left end is connected in the threaded hole of the right end of the three-section combined rod through threads. The right end of the driven guide rod is connected in the threaded hole of the left end of the three-section combined rod, and the left end is installed on the left end cap in the supporting way. The advantages of the dynamic sealing performance detection device of the three-section sealing component are that the reliability is great, operation is easy and convenient and the dynamic and static sealing performance of the sealing component can be detected.

Description

Dynamic sealing performance testing device for three-stage sealing assembly

technical field

The invention relates to a device for detecting the sealing performance of a sealing assembly, in particular to a device for detecting the dynamic sealing performance of a three-stage sealing assembly.

Background technique

The hydraulic jack is a commonly used jacking device in industrial production, and the sealing performance of its sealing parts is the key to whether the hydraulic jack can work normally. However, in a wide variety of sealing components, which type of sealing component is most suitable for the jack and has the lowest cost is usually detected by a detection device. However, the existing detection devices have complex structures, poor reliability, and many interference factors in the detection process, resulting in distortion of detection results.

Contents of the invention

The purpose of the present invention is to overcome the deficiencies of the prior art, and provide a dynamic sealing performance detection device for a three-stage sealing assembly. It has simple structure, good reliability and easy operation, and can detect the dynamic and static sealing performance of sealing components.

The technical solution of the present invention is: a dynamic sealing performance detection device for a three-stage sealing assembly, including a cylinder body, a support frame, a left end cover, a right end cover, an active guide rod, a driven guide rod, a three-stage combination rod and an oil pressure gauge;

The left end cover and the right end cover are respectively installed at both ends of the cylinder and connected with the support frame;

The outer wall of the cylinder is provided with an oil pressure gauge interface and an oil inlet interface connected to the inner cavity of the cylinder; the oil pressure gauge is connected to the oil pressure gauge interface;

The three-section combined rod is installed in the inner hole of the cylinder through the annular bosses on the outer edges of the two ends, and the seal between the annular boss and the inner wall of the cylinder is sealed by the sealing component to be tested; a ring-cylindrical oil is formed between the two annular bosses. cavity; and the oil pressure gauge port and the oil inlet port on the cylinder are connected to the cylindrical oil chamber;

The right end of the active guide rod is supported and installed on the right end cover, and the right end is associated with the power mechanism, which drives the active guide rod to reciprocate, and the left end is threaded into the screw hole at the right end of the three-section combined rod;

The right end of the driven guide rod is connected in the screw hole at the left end of the three-section combined rod, and the left end support is installed on the left end cover.

The further technical scheme of the present invention is: the three-section combined rod comprises the middle rod and the left rod and the right rod which are screwed respectively in the screw holes at both ends of the middle rod; and right stick.

A further technical solution of the present invention is: it also includes an oil inlet pipe connected to the oil inlet port of the cylinder body, and the oil inlet pipe is provided with a valve.

The further technical solution of the present invention is: the right end of the active guide rod is supported and installed on the right end cover through the guide sleeve A, and the left end of the driven guide rod is supported and installed on the left end cover through the guide sleeve B.

Compared with the prior art, the present invention has the following advantages:

1. The structure is simple, the reliability is good, the operation is easy, and the dynamic and static sealing performance of the sealing components can be tested. If the oil leaks from the sealing assembly, the reading of the oil pressure gauge will change, so that it is very convenient to know the test result.

2. The three-section combined rod adopts a three-section split structure, which is easy to assemble.

Below in conjunction with figure and embodiment the present invention will be further described.

Description of drawings

Fig. 1 is a structural schematic diagram of the present invention.

detailed description

Example 1:

The dynamic sealing performance testing device of the three-stage sealing assembly, including the cylinder body 1, the support frame 2, the left end cover 3, the right end cover 4, the active guide rod 5, the driven guide rod 6, the three-stage combination rod 7, and the oil pressure gauge 8 And oil inlet pipe 10.

The left end cover 3 and the right end cover 4 are respectively installed on the two ends of the cylinder body 1 and connected with the support frame 2 .

An oil pressure gauge interface 11 and an oil inlet interface 12 connected to the inner cavity of the cylinder body 1 are provided on the outer wall of the cylinder body 1 . The oil pressure gauge 8 is connected to the oil pressure gauge interface 11 .

The three-section combined rod 7 is installed in the inner hole of the cylinder body 1 through the annular bosses 71 on the outer edges of the two ends, and the sealing assembly to be tested is sealed between the annular boss 71 and the inner wall of the cylinder body 1 . A cylindrical oil chamber 9 is formed between the two annular bosses 71 . Moreover, the oil pressure gauge port 11 and the oil inlet port 12 on the cylinder body 1 are both connected to the cylindrical oil chamber 9 . The three-section combined rod 7 comprises an intermediate rod 72 and a left rod 73 and a right rod 74 which are threadedly connected to the screw holes at both ends of the intermediate rod 72 respectively; and right stick 74 on.

The right end of the active guide rod 5 is supported and installed on the right end cover 4 by the guide sleeve A20, the right end is associated with the power mechanism, and the power mechanism drives the active guide rod 5 to reciprocate, and the left end is threaded in the screw hole at the right end of the three-section combination rod 7.

The right end of the driven guide rod 6 is connected in the screw hole at the left end of the three-section combination rod 7, and the left end is supported and installed on the left end cover 3 by the guide sleeve B30.

The oil inlet pipe 10 is connected to the oil inlet port 12 of the cylinder body 1, and the oil inlet pipe 10 is provided with a valve.

Briefly describe the use of the present invention: inject oil into the cylindrical oil chamber 9 through the oil inlet port 12 on the cylinder body 1, and after the air in the cylindrical oil chamber 9 is discharged through the oil pressure gauge interface 11, the oil pressure gauge 8 Installed on the oil pressure gauge interface 11. Raise the hydraulic oil pressure to the required pressure value and maintain the pressure. Start the power mechanism to drive the active guide rod 5 to reciprocate, so that the three-section combined rod 7 equipped with the sealing assembly reciprocates in the inner wall of the cylinder 1. After reciprocating for a certain number of times, the reading of the oil pressure gauge 8 can be used to know whether there is oil leakage , if the reading of the oil pressure gauge does not change, it means that the oil in the annular cylindrical oil chamber 9 has no leakage, and the performance of the sealing assembly is qualified; otherwise, the performance of the sealing assembly is unqualified.

Claims (4)

1. the dynamic sealing performance detection means of three-stage seal assembly, it is characterized in that：Including cylinder (1), Support frame (2), left end cap (3), right end cap (4), active guide rod (5), driven guide rod (6), three sections of combinations Bar (7) and oil pressure gauge (8)；

Left end cap (3) and right end cap (4) are separately mounted to the two ends of cylinder (1) and are connected with support frame (2)；

It is communicated with cylinder (1) outer wall to the oil pressure gauge interface (11) and oil-feed interface of cylinder (1) inner chamber (12)；Oil pressure gauge (8) is connected on oil pressure gauge interface (11)；

Three sections of compound rods (7) are by the annular boss (71) in its two ends outer rim installed in cylinder (1) endoporus In, sealed by seal assembly to be detected between annular boss (71) and cylinder (1) inwall；Two convex annulars Ring-cylindrical oil pocket (9) is formed between platform (71)；And the oil pressure gauge interface (11) on cylinder (1) and oil-feed interface (12) it is communicated to Ring-cylindrical oil pocket (9)；

The supporting of active guide rod (5) right-hand member is arranged on right end cap (4), and right-hand member termination associates with actuating unit, Actuating unit drives active guide rod (5) to move back and forth, and left end is threaded in three sections of compound rod (7) right-hand members In screw；

Driven guide rod (6) right-hand member is connected in three sections of screws of compound rod (7) left end, and left end supporting is arranged on On left end cap (3).

2. the dynamic sealing performance detection means of three-stage seal assembly as claimed in claim 1, it is special Levying is：Three sections of compound rods (7) are including intermediate bar (72) and are threaded in respectively in the screw of intermediate bar two ends Left bar (73) and right bar (74)；Two annular boss (71) on three sections of compound rods (7) are respectively provided at left bar (73) and on right bar (74).

3. the dynamic sealing performance detection means of three-stage seal assembly as claimed in claim 2, it is special Levying is：It also includes the oil inlet pipe (10) being connected on cylinder (1) oil-feed interface (12), oil inlet pipe (10) It is upper to carry valve.

4. the dynamic sealing performance inspection of three-stage seal assembly as claimed any one in claims 1 to 3 Device is surveyed, it is characterized in that：Active guide rod (5) right-hand member is supported by guide pin bushing A (20) and is arranged on right end cap (4) On, driven guide rod (6) left end is supported by guide pin bushing B (30) and is arranged on left end cap (3).