Gas flow detection device for rotary oil seal pump

Abstract

The utility model relates to the technical field of oil seal detection, in particular to a rotary oil seal pump gas flow detection device, which comprises a test cavity, a gas flow meter and a main shaft, one end of the test cavity is communicated with the gas flow meter, the other end of the test cavity is provided with a mounting hole, and one end of the main shaft extends into the test cavity through the mounting hole. And the other end of the main shaft is connected with a motor for driving the main shaft to rotate. After the gas flow detection device for the rotary oil seal pump is installed, along with the rotation of the main shaft, the main lip of the test piece pumps the gas on the air side of the dustproof lip of the test piece into the oil liquid cavity, and the gas enters the oil liquid cavity along with the gas on the air side of the dustproof lip of the test piece; gas on the atmosphere side enters the air side of the dustproof lip of the test piece through the gas flow meter, so that the air pressures on the two sides are the same, and the value of the gas flow meter is the gas pumping amount of the main lip of the test piece. The device is simple in structure, convenient to operate and capable of conveniently and quickly detecting the gas quantity of the oil seal main lip pump.

Description

TECHNICAL FIELD

[0001] The utility model relates to oil seal detection technical field especially relates to a rotary oil seal pump gas quantity detection device. BACKGROUND

[0002] The pump gas quantity of the main lip of the oil seal refers to the phenomenon that the gas or liquid is pumped through the sealing interface under the dynamic working condition due to factors such as friction, deformation or pressure difference, and the oil seal is especially used for the sealing of the rotating shaft.

[0003] At present, there is no equipment tool specially for the detection of the pump gas quantity of the main lip of the oil seal, and there is no sufficient pump gas quantity data accumulation to judge the advantages and disadvantages of the sealing capacity of the oil seal. Generally speaking, the best sealing effect of the oil seal is not the larger the pump suction is, the better it is, if the pump suction is too large, the lubricating oil film between the sealing surfaces is damaged, the oil seal lip surface and the shaft are directly contacted to produce the effect similar to dry friction, the oil seal and the shaft are abraded, and the sealing failure is caused. Therefore, the pump gas quantity of the main lip of the oil seal needs to be detected, sufficient data needs to be accumulated, the relationship between the pump gas capacity of the oil seal and the sealing capacity and the service life thereof needs to be analyzed from the intuitive angle, and the standard establishment is carried out. UTILITY MODEL CONTENTS

[0004] TECHNICAL OBJECTIVE: In order to overcome the deficiencies in the prior art, the utility model provides a rotary oil seal pump gas quantity detection device, which can simply and conveniently detect the pump gas quantity of the main lip of the oil seal.

[0005] TECHNICAL SCHEME: In order to achieve the above object, the utility model discloses a rotary oil seal pump gas quantity detection device, which comprises a test cavity, a gas flowmeter and a main shaft, one end of the test cavity is communicated with the gas flowmeter, the other end is provided with a mounting hole, and one end of the main shaft extends into the inside of the test cavity through the mounting hole.

[0006] The other end of the main shaft is connected with a motor for driving the rotation of the main shaft.

[0007] The test cavity comprises an oil cavity, a mounting cavity and a gas cavity which are communicated in sequence, the gas cavity is communicated with the gas flowmeter, the mounting hole is arranged on the cavity wall of the oil cavity, a test oil seal is mounted in the mounting cavity and is sleeved on the main shaft.

[0008] The oil cavity, the mounting cavity and the gas cavity are detachably connected.

[0009] The oil cavity and the mounting cavity are screw-connected.

[0010] A mounting disc is sleeved in the mounting cavity, and a press-fitting hole for press-fitting the test oil seal is arranged at the center of the mounting disc.

[0011] An outwardly extending eave is provided on the outer wall of the gas chamber near one end of the mounting chamber, and a plurality of pressure blocks are provided at the end of the mounting chamber, the pressure blocks pressing the eaves tightly against the end face of the mounting plate.

[0012] A sealing ring is provided between the mounting cavity and the mounting plate.

[0013] A sealing gasket is provided between the gas chamber and the mounting plate.

[0014] The space enclosed by the oil chamber, the mounting chamber, and the test oil seal is filled with oil.

[0015] Compared with the prior art, the beneficial effects of this utility model are:

[0016] After the rotary oil seal pump air volume detection device of this utility model is installed, as the main shaft rotates, the main lip of the test piece will pump the gas from the air side of the dustproof lip of the test piece into the oil cavity. As the gas from the air side of the dustproof lip of the test piece enters the oil cavity, the gas from the atmospheric side will enter the air side of the dustproof lip of the test piece through the gas flow meter, making the air pressure on both sides the same. The value of the gas flow meter is the pumping air volume of the main lip of the test piece. This device has a simple structure and is easy to operate. It can conveniently and quickly detect the pumping air volume of the oil seal main lip, accumulate data, and intuitively analyze the relationship between the oil seal pumping capacity and its sealing capacity and service life, thereby establishing standards. Attached Figure Description

[0017] Figure 1 This is a cross-sectional view of the overall structure of this utility model;

[0018] Figure 2 This is a schematic diagram of the test chamber structure;

[0019] Figure 3 This is a schematic diagram of the mounting cavity and mounting plate structure;

[0020] Figure 4 This is a schematic diagram of the compaction block structure;

[0021] Figure 5 This is a cross-sectional view of the gas chamber, mounting chamber, and arrangement plate structure.

[0022] In the diagram, 1 is the test chamber; 2 is the gas flow meter; 3 is the main shaft; 4 is the motor; 5 is the mounting hole; 6 is the oil; 7 is the oil chamber; 8 is the mounting chamber; 9 is the gas chamber; 10 is the test oil seal; 11 is the mounting plate; 12 is the press hole; 13 is the outer edge; and 14 is the pressure block. Detailed Implementation

[0023] The following is in conjunction with the appendix Figure 1 To be continued Figure 5The principles and features of this utility model are described, and the examples given are only used to explain this utility model and are not intended to limit the scope of this utility model.

[0024] A rotary oil seal pump gas volume detection device includes a test chamber 1, a gas flow meter 2, and a main shaft 3. One end of the test chamber 1 is connected to the gas flow meter 2, and the other end is provided with a mounting hole 5. One end of the main shaft 3 extends into the test chamber 1 through the mounting hole 5, and the other end of the main shaft 3 is connected to a motor 4 that drives its rotation. The test chamber 1 includes an oil chamber 7, a mounting chamber 8, and a gas chamber 9 connected in sequence. The gas chamber 9 is connected to the gas flow meter 2. The mounting hole 5 is provided on the wall of the oil chamber 7. A test oil seal 10 is installed in the mounting chamber 8 and sleeved on the main shaft 3. The space enclosed by the oil chamber 7, the mounting chamber 8, and the test oil seal 10 is filled with oil 6.

[0025] After the testing device is installed, motor 4 drives spindle 3 to rotate. The main lip of the test oil seal 10 pumps the gas from the air side of the dustproof lip into the oil chamber 7. As the gas from the air side of the dustproof lip enters the oil chamber 7, a negative pressure is generated in the gas chamber 9. The gas from the atmospheric side enters the gas chamber 9 through the gas flow meter 2. The reading on the gas flow meter 2 is the pumping volume of the main lip of the test oil seal 10. This structure is simple and easy to operate, enabling convenient and quick testing of the pumping volume of the main lip of the oil seal. The test data allows for intuitive analysis of the relationship between the oil seal's pumping capacity and its sealing capacity and lifespan, thereby facilitating the establishment of standards. Temperature sensors and other components can be installed on the testing device to collect relevant data such as temperature and rotation speed, allowing for comprehensive analysis of various data sources.

[0026] To facilitate testing of different types of oil seals and enable quick seal replacement, in one embodiment, a mounting plate 11 is fitted inside the mounting cavity 8. The mounting plate 11 has a press-fit hole 12 at its center for pressing the test oil seal 10. During testing, the test oil seal 10 is press-fitted into the press-fit hole 12 and then mounted on the spindle 3 for testing. When testing oil seals of different sizes and models, only the mounting plate 11 with a different hole diameter needs to be replaced; there is no need to replace the entire equipment.

[0027] The oil chamber 7, the mounting chamber 8, and the gas chamber 9 are detachably connected. Specifically, the oil chamber 7 is threadedly connected to the mounting chamber 8; the outer wall of the gas chamber 9 near the mounting chamber 8 is provided with an outwardly extending eave 13; the end of the mounting chamber 8 is provided with several pressure blocks 14, which can be bolted to the end face of the mounting chamber 8. The pressure blocks 14 can press the eave 13 in place. Tightening the bolts will press the eave 13 against the end face of the mounting plate 11.

[0028] To ensure the sealing of the detection device, a sealing ring is provided between the mounting cavity 8 and the mounting plate 11, and a sealing gasket is provided between the gas cavity 9 and the mounting plate 11. Other places that need to be sealed can also be equipped with corresponding sealing components.

[0029] The above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. A rotating oil seal pump gas rate detection device, characterized by, It comprises a test cavity (1), a gas flow meter (2) and a main shaft (3), one end of the test cavity (1) is communicated with the gas flow meter (2), the other end is provided with a mounting hole (5), one end of the main shaft (3) extends into the test cavity (1) through the mounting hole (5).

2. The rotating oil seal pump gas rate detection apparatus of claim 1, wherein, The other end of the main shaft (3) is connected with a motor (4) for driving the rotation of the main shaft (3).

3. The rotating oil seal pump gas rate detection apparatus of claim 1, wherein, The test cavity (1) comprises an oil cavity (7), a mounting cavity (8) and a gas cavity (9) communicated in sequence, the gas cavity (9) is communicated with the gas flow meter (2), the mounting hole (5) is arranged on the cavity wall of the oil cavity (7), a test oil seal (10) is mounted in the mounting cavity (8) and is sleeved on the main shaft (3).

4. The rotating oil seal pump gas rate detection apparatus of claim 3, wherein, The oil cavity (7), the mounting cavity (8) and the gas cavity (9) are detachably connected.

5. The rotating oil seal pump gas rate detection apparatus of claim 4, wherein, The oil cavity (7) and the mounting cavity (8) are threadedly connected.

6. The rotating oil seal pump gas rate detection apparatus of claim 4, wherein, The mounting cavity (8) is sleeved with a mounting disc (11), the mounting disc (11) is provided with a pressing hole (12) in the center for pressing the test oil seal (10).

7. The rotating oil seal pump gas rate detection apparatus of claim 6, wherein, The gas cavity (9) is provided with an outwardly extending eaves (13) on the outer wall close to one end of the mounting cavity (8), the mounting cavity (8) is provided with a plurality of pressing blocks (14) at the end, the pressing blocks (14) press the eaves (13) tightly on the end face of the mounting disc (11).

8. The rotating oil seal pump gas rate detection apparatus of claim 6, wherein, A sealing ring is arranged between the mounting cavity (8) and the mounting disc (11).

9. The rotating oil seal pump air quantity detection device according to claim 6, characterized by A sealing rubber gasket is arranged between the gas cavity (9) and the mounting disc (11).

10. The rotating oil seal pump gas rate detection apparatus of claim 4, wherein, The space enclosed by the oil cavity (7), the mounting cavity (8) and the test oil seal (10) is filled with oil (6).

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