CN206235435U - A kind of dynamic sealing performance detection means of seal assembly - Google Patents

Abstract

A dynamic sealing performance detection device for a sealing assembly, comprising a cylinder body 1, a support frame 2, a left end cover 3, a right end cover 4, a left connecting sleeve 5, a right connecting sleeve 6, an active guide rod 7, an intermediate rod 8, a driven guide rod Rod 9 and oil pressure gauge 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 port 11 and an oil inlet port 12 connected to the inner cavity of the barrel body 1 are provided on the outer wall of the barrel body 1 . The oil pressure gauge 10 is connected to the oil pressure gauge interface 11 . An oil inlet pipe 40 is connected to the oil inlet port 12, and the oil inlet pipe 40 is provided with a valve. The utility model has the advantages of simple structure, good reliability, easy operation, etc. It can detect the dynamic and static sealing performance of the sealing assembly, and simulate the process of the piston reciprocating in the inner cavity of the oil cylinder during the working process of the hydraulic jack. The annular cavity between is filled with hydraulic oil, 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.

Description

A dynamic sealing performance detection device for sealing components

technical field

The utility model relates to a device for detecting the sealing performance of a sealing assembly, in particular to a dynamic sealing performance detection device of a 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 utility model is to overcome the deficiencies of the prior art, and provide a dynamic sealing performance detection device of the 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 scheme of the utility model is: a dynamic sealing performance detection device of a sealing assembly, including a cylinder body, a support frame, a left end cover, a right end cover, a left connecting sleeve, a right connecting sleeve, an active guide rod, an intermediate rod, a driven guide Rod and 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;

One end of the intermediate rod is connected to the right end of the driven guide rod through the left connecting sleeve, the other end of the intermediate rod is connected to the left end of the active guide rod through the right connecting sleeve, and the active guide rod, intermediate rod and driven guide rod are connected through the left and right connecting sleeves It is a whole and located in the cylinder; the left and right connecting sleeves and the inner wall of the cylinder are sealed by the sealing assembly to be tested, so that an annular cavity is formed in the inner cavity of the cylinder, and the oil pressure gauge interface on the cylinder and the inlet The oil ports are all connected to the annular cavity; the left end of the driven guide rod is supported on the left end cover, the right end of the active guide rod is supported on the right end cover, and the right end is associated with the power mechanism, which drives the active guide rod to reciprocate.

The further technical solution of the utility model is: it also includes an oil inlet pipe connected to the oil inlet interface of the cylinder body, and the oil inlet pipe has a valve.

The further technical scheme of the utility model is: the inner hole of the left connecting sleeve is provided with an internal thread, the right end of the driven guide rod and the left end of the middle rod are provided with an external thread matched with the left connecting sleeve; An internal thread is provided, and the left end of the active guide rod and the right end of the intermediate rod are provided with external threads matched with the right connecting sleeve.

The further technical scheme of the utility model is: a guide sleeve A installed on the left end cover is provided between the left end cover and the driven guide rod, and a guide sleeve B installed on the right end cover is provided between the right end cover and the active guide rod .

The further technical scheme of the utility model is: the left connecting sleeve and the right connecting sleeve are both split structures, and both are composed of an inner sleeve and an outer sleeve, and the inner sleeve and the outer sleeve are connected into one body through bolts.

Compared with the prior art, the utility model has the following advantages: simple structure, good reliability, easy operation, and the dynamic and static sealing performance of the sealing assembly can be detected. The seal between the left and right connecting sleeves and the inner wall of the cylinder is sealed by the sealing component to be tested. The power mechanism drives the active guide rod to reciprocate, and then drives the left and right connecting sleeves equipped with the sealing components to reciprocate in the inner wall of the cylinder. Then simulate the reciprocating movement of the piston in the inner cavity of the cylinder during the working process of the hydraulic jack. The annular cavity between the left and right connecting sleeves is filled with hydraulic oil. 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 results.

Below in conjunction with figure and embodiment the utility model is described further.

Description of drawings

Fig. 1 is the structural representation of the utility model.

detailed description

Example 1:

A dynamic sealing performance detection device for a sealing assembly, comprising a cylinder body 1, a support frame 2, a left end cover 3, a right end cover 4, a left connecting sleeve 5, a right connecting sleeve 6, an active guide rod 7, an intermediate rod 8, a driven guide rod Rod 9 and oil pressure gauge 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 10 is connected to the oil pressure gauge interface 11 . An oil inlet pipe 40 is connected to the oil inlet port 12, and the oil inlet pipe 40 is provided with a valve.

One end of the middle rod 8 is connected with the right end of the driven guide rod 9 through the left connecting sleeve 5, and the inner hole of the left connecting sleeve 5 is provided with an internal thread, and the right end of the driven guide rod 9 and the left end of the middle rod 8 are provided with a left connecting sleeve. 5 matched external threads, the other end of the middle rod 8 is connected to the left end of the active guide rod 7 through the right connecting sleeve 6, the inner hole of the right connecting sleeve 6 is provided with internal threads, the left end of the active guide rod 7 and the right end of the middle rod 8 An external thread matched with the right connecting sleeve 6 is provided. The active guide rod 7 , the intermediate rod 8 and the driven guide rod 9 are connected as a whole through the left and right connecting sleeves and are located in the barrel 1 . The left and right connecting sleeves and the inner wall of the barrel 1 are sealed by the sealing assembly 20 to be tested, thereby forming an annular cavity 30 in the inner cavity of the barrel, and the oil pressure gauge port 11 on the barrel 1 and the oil inlet port 12 Both communicate with the annular cavity 30 . The left end support of driven guide rod 9 is installed on the left end cover 3 . The right end support of active guide rod 7 is installed on the right end cover 4, and the right end end is associated with power mechanism, and power mechanism drives active guide rod 7 to reciprocate.

Preferably, a guide sleeve A50 installed on the left end cover 3 is provided between the left end cover 3 and the driven guide rod 9 , and a guide sleeve B60 installed on the right end cover 4 is provided between the right end cover 4 and the driving guide rod 7 .

In this embodiment, both the left connecting sleeve 5 and the right connecting sleeve 6 are of split structure, consisting of an inner sleeve and an outer sleeve, and the inner sleeve and the outer sleeve are connected into one body by bolts.

Briefly describe the use of this utility model: fill oil into the annular cavity 30 through the oil inlet port 12 on the cylinder body 1, and install the oil pressure gauge 10 on the oil pressure gauge after the air in the annular cavity 30 is discharged through the oil pressure gauge interface 11 on 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 7 to reciprocate, so that the left and right connecting sleeves equipped with sealing components reciprocate in the inner wall of the cylinder 1. After reciprocating for a certain number of times, you can know whether there is oil leakage through the reading of the oil pressure gauge. If the reading of the oil pressure gauge does not change, it means that the oil in the annular cavity 30 does not leak, and the performance of the sealing assembly is qualified; otherwise, the performance of the sealing assembly is unqualified.

Claims (5)

1. the dynamic sealing performance detection means of a kind of seal assembly, it is characterized in that：Including cylinder (1), support frame (2), left end Lid (3), right end cap (4), left adapter sleeve (5), right adapter sleeve (6), active guide rod (7), intermediate bar (8), driven guide rod (9) and oil Pressure table (10)；

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 (12) of cylinder (1) inner chamber；Oil pressure gauge (10) it is connected on oil pressure gauge interface (11)；

Intermediate bar (8) one end is connected by left adapter sleeve (5) with the right-hand member of driven guide rod (9), and intermediate bar (8) other end is by the right side Adapter sleeve (6) is connected with the left end of active guide rod (7), and active guide rod (7), intermediate bar (8) and driven guide rod (9) are by left and right Adapter sleeve is connected as an entirety and in cylinder (1)；By to be detected between left and right adapter sleeve and cylinder (1) inwall Seal assembly (20) sealing, so as to form an annular chamber (30), and the oil pressure gauge interface on cylinder (1) in cylinder lumen (11) it is communicated to annular chamber (30) with oil-feed interface (12)；The left end supporting of driven guide rod (9) is arranged on left end cap (3), The right-hand member supporting of active guide rod (7) is arranged on right end cap (4), and right-hand member termination associates with actuating unit, and actuating unit drives master Dynamic guide rod (7) is moved back and forth.

2. the dynamic sealing performance detection means of a kind of seal assembly as claimed in claim 1, it is characterized in that：It also includes connecting The oil inlet pipe (40) on cylinder (1) oil-feed interface (12) is connected on, valve is carried on oil inlet pipe (40).

3. the dynamic sealing performance detection means of a kind of seal assembly as claimed in claim 1 or 2, it is characterized in that：Left connection Internal thread is provided with set (5) endoporus, the right-hand member of driven guide rod (9) and the left end of intermediate bar (8) are provided with and match with left adapter sleeve (5) The external screw thread of conjunction；Internal thread is provided with right adapter sleeve (6) endoporus, the left end of active guide rod (7) and the right-hand member of intermediate bar (8) are provided with The external screw thread being engaged with right adapter sleeve (6).

4. the dynamic sealing performance detection means of a kind of seal assembly as claimed in claim 1 or 2, it is characterized in that：Left end cap (3) the fairlead A (50) on left end cap (3), right end cap (4) and active guide rod (7) are provided between driven guide rod (9) Between be provided with the fairlead B (60) on right end cap (4).

5. the dynamic sealing performance detection means of a kind of seal assembly as claimed in claim 1 or 2, it is characterized in that：Left connection Set (5) and right adapter sleeve (6) are Split type structure, and by inner sleeve and overcoat composition, it is one that inner sleeve and overcoat are bolted Body.