Oil injection test system of oil seal rotation test bench

Abstract

The utility model discloses an oil seal rotation test bench oil injection test system, which comprises a bottom plate platform, an oil tank, an output oil cylinder and a stress oil cylinder, the oil tank is used for storing test oil and installed at a high position of the bottom plate platform, the output oil cylinder and the stress oil cylinder are installed at a low position of the bottom plate platform, and the output oil cylinder is connected with a hydraulic station. An oil tank oil outlet pipe is arranged at the bottom of the oil tank, a first pneumatic ball valve, a three-way connector and a second pneumatic ball valve are installed on the oil tank oil outlet pipe, a first connector and a second connector of the three-way connector are connected with the first pneumatic ball valve and the second pneumatic ball valve respectively, and a third connector of the three-way connector is connected with a stress oil cylinder oil pipe. And the other end of the stress oil cylinder oil pipe is connected with a front end interface of the stress oil cylinder. By means of the mode, the oil seal test system can save test oil consumption when an oil seal experiment is conducted, pollution and waste caused by frequent replacement of test oil products in the experiment are avoided, and it is guaranteed that pressure can be stably output during pressurization.

Description

Technical Field

[0001] The utility model relates to the technical field of oil seal test fixtures, in particular to an oil injection test system of an oil seal rotary test bench. Background Art

[0002] In the current oil seal manufacturing industry, rotary test benches are used to test the performance of seal products. During the testing process, the test product must be sprayed with oil or pressurized with oil. Different oils must be used for different products during the experiment.

[0003] The traditional method is to use the principle of a hydraulic station to pump oil into the test chamber with a pump, and then control the pressure of the test oil through the oil pipe and valve body through the pump. However, this traditional method has the following drawbacks:

[0004] First, a larger oil tank is often required during testing, otherwise the pressure control will be affected when pumping oil;

[0005] Second, there will be test oil residue inside the oil pipe and valve body, which needs to be cleaned when changing the test oil. Otherwise, it will cause oil waste or lead to mutual contamination of oil, and it will not be able to be recycled;

[0006] Third, since the length of the oil pipe is generally long, there will be pressure loss inside the pipe, and the pressure output will be unstable during testing, affecting the oil pumping effect. Utility Model Content

[0007] The main technical problem solved by the utility model is to provide an oil injection test system for an oil seal rotary test bench. When the rotary test bench is tested, the product to be tested can be immersed in the test oil, and half-cavity oil immersion or full-cavity oil immersion can be achieved, so that the oil pressure in the test cavity can be output stably, the oil return can be stable, and the injection oil pressure can be stable, so that the test oil can be clean and not contaminated, and the amount of test oil used can also be reduced.

[0008] In order to solve the above technical problems, a technical solution adopted by the present invention is to provide an oil seal rotary test bench oil injection test system, comprising: a base plate platform, an oil tank, an output oil cylinder and a force-receiving oil cylinder, wherein the oil tank is used to store test oil and is installed at a high position of the base plate platform through a support frame, and the output oil cylinder and the force-receiving oil cylinder are installed at a low position of the base plate platform through a connecting plate.

[0009] The output oil cylinder is connected to the hydraulic station, and the piston rod of the output oil cylinder is connected to the piston rod of the force oil cylinder. The bottom of the oil tank is provided with an oil tank outlet pipe, and the oil tank outlet pipe is installed with a pneumatic ball valve 1, a three-way joint and a pneumatic ball valve 2.

[0010] Connector 1 and connector 2 of the three-way joint are connected to pneumatic ball valve 1 and pneumatic ball valve 2 respectively, and connector 3 of the three-way joint is connected to a stressed oil cylinder oil pipe, and the other end of the stressed oil cylinder oil pipe is connected to the front end interface of the stressed oil cylinder.

[0011] In a preferred embodiment of the present invention, the output cylinder and the force-receiving cylinder are arranged concentrically.

[0012] In a preferred embodiment of the present invention, the output cylinder is connected to two oil inlet pipes, namely output cylinder oil inlet pipe 1 and output cylinder oil inlet pipe 2, and the output cylinder oil inlet pipe 1 and output cylinder oil inlet pipe 2 are both connected to a hydraulic station for providing hydraulic power.

[0013] In a preferred embodiment of the present invention, the output oil cylinder may be further connected to a reversing valve, and the extension and retraction actions of the output oil cylinder are controlled by the reversing valve to control the movement direction of the output oil cylinder.

[0014] In a preferred embodiment of the present invention, the inlet of the pneumatic ball valve 1 is connected to the oil outlet pipe of the oil tank, the outlet of the pneumatic ball valve 1 is connected to the connector 1 of the three-way joint, the connector 2 of the three-way joint is connected to the inlet of the pneumatic ball valve 2, and the outlet of the pneumatic ball valve 2 is connected to the oil outlet pipe.

[0015] In a preferred embodiment of the present invention, the oil outlet pipe is directly connected to the test cavity end of the test product.

[0016] In a preferred embodiment of the present invention, the rear end interface of the force-bearing oil cylinder is blocked by a plug.

[0017] The beneficial effects of the present invention are: by precisely controlling the switch of the pneumatic ball valve, it is ensured that the test oil is fully absorbed in the stressed oil cylinder before flowing to the test product, thereby greatly reducing the amount of test oil used; by controlling the stressed oil cylinder and the output oil cylinder, a stable output pressure can be provided without pressure deviation, thereby ensuring the accuracy of the test results; the system is independent and can be easily cleaned when changing oil products to avoid contamination between different oil products; the system can be independently installed inside the equipment, thereby shortening the pressure loss of the oil pipe and the like and improving efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for describing the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative work. Among them:

[0019] Figure 1This is a perspective view of a preferred embodiment of the oil seal rotary test bench oil injection test system of the present utility model;

[0020] Figure 2 This is a front view of a preferred embodiment of the oil seal rotary test bench oil injection test system of the present utility model;

[0021] The markings of the components in the accompanying drawings are as follows:

[0022] 1. Base platform, 2. Fuel tank, 3. Output cylinder, 4. Force cylinder, 5. Pneumatic ball valve 1, 6. Pneumatic ball valve 2, 7. Plug, 8. T-joint, 9. Force cylinder oil pipe, 10. Fuel tank outlet pipe, 11. Oil outlet pipe, 12. Output cylinder oil inlet pipe 1, 13. Output cylinder oil inlet pipe 2. DETAILED DESCRIPTION

[0023] To make the purpose, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Generally, the components of the embodiments of the present invention described and shown in the drawings herein can be arranged and designed in various different configurations.

[0024] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but rather merely represents selected embodiments of the present invention. All other embodiments derived by persons of ordinary skill in the art based on the embodiments of the present invention without creative effort are also within the scope of protection of the present invention.

[0025] See also Figures 1 to 2 , the embodiments of the present utility model include:

[0026] This embodiment provides an oil seal rotary test bench oil injection test system, which is suitable for oil seal rotary test, and includes: a base plate platform 1, an oil tank 2, an output oil cylinder 3 and a force-receiving oil cylinder 4, wherein the oil tank 2 is installed at a high position of the base plate platform 1 through a support frame, and the output oil cylinder 3 and the force-receiving oil cylinder 4 are installed at a low position of the base plate platform 1 through a connecting plate.

[0027] First, there are the output cylinder 3 and the force-receiving cylinder 4 . The output cylinder 3 is connected to the hydraulic station, and the piston rod of the output cylinder 3 is connected to the piston rod of the force-receiving cylinder 4 .

[0028] In this embodiment, the output cylinder 3 and the force-receiving cylinder 4 are kept in a concentric arrangement, which can reduce the pressure fluctuation caused by the relative position deviation between the cylinders, ensure the smooth flow of hydraulic oil, and ensure that the pressure can be output stably during boosting.

[0029] Specifically, the output cylinder 3 is connected to two oil inlet pipes, namely output cylinder oil inlet pipe 1 12 and output cylinder oil inlet pipe 2 13. Output cylinder oil inlet pipe 1 12 and output cylinder oil inlet pipe 2 13 are both connected to a hydraulic station for providing hydraulic power, ensuring that the output cylinder can obtain sufficient hydraulic oil to drive its work and meet the output requirements.

[0030] Furthermore, a reversing valve may be connected to the output oil cylinder 3 to control the extension and retraction of the output oil cylinder through the reversing valve to control the movement direction of the output oil cylinder and ensure that the hydraulic oil flows accurately and stably.

[0031] Secondly, the oil tank 2 is used to store test oil. The bottom of the oil tank 2 is provided with an oil tank outlet pipe 10, on which a pneumatic ball valve 1 5, a three-way joint 8 and a pneumatic ball valve 2 6 are installed. The joint 1 and the joint 2 of the three-way joint 8 are connected to the pneumatic ball valve 1 5 and the pneumatic ball valve 2 6 respectively.

[0032] In this embodiment, the inlet of the pneumatic ball valve 15 is connected to the oil tank outlet pipe 10, the outlet of the pneumatic ball valve 15 is connected to the connector 1 of the three-way joint 8, the connector 2 of the three-way joint 8 is connected to the inlet of the pneumatic ball valve 2 6, and the outlet of the pneumatic ball valve 2 6 is connected to the oil outlet pipe 11, and the oil outlet pipe 11 is directly connected to the test cavity end of the test product.

[0033] Furthermore, the third joint of the three-way joint 8 is connected to a stressed cylinder oil pipe 9, the other end of which is connected to the front end interface of the stressed cylinder 4, and the rear end interface of the stressed cylinder 4 is blocked by a plug 7.

[0034] The action flow of the oil injection test system of the utility model oil seal rotary test bench is:

[0035] When the system is running, the hydraulic station provides high-pressure oil, which flows into the output cylinder 3 through the output cylinder oil inlet pipe 12 and the output cylinder oil inlet pipe 2 13, pushing the piston rod of the output cylinder 3 to move, and controlling the extension or retraction of the piston rod in the output cylinder through the reversing valve:

[0036] When the piston rod of the output oil cylinder 3 extends, it pushes the piston rod of the stressed oil cylinder 4 to retract. At this time, the pneumatic ball valve 1 5 opens, the pneumatic ball valve 2 6 closes, and the test oil in the oil tank 2 flows into the stressed oil cylinder 4 through the stressed oil cylinder oil pipe 9, and the stressed oil cylinder 4 absorbs oil;

[0037] When the stressed oil cylinder 4 is full of test oil, the pneumatic ball valve 1 5 is closed and the pneumatic ball valve 2 6 is opened. At this time, the piston rod of the output oil cylinder 3 retracts and the piston rod of the stressed oil cylinder 4 extends. The test oil passes through the stressed oil cylinder oil pipe 9 and flows to the oil outlet oil pipe 11, and finally flows to the test cavity end of the test product.

[0038] Through the above-mentioned test system, when testing on a rotary test bench, the product to be tested can be immersed in the test oil, and half-cavity oil immersion or full-cavity oil immersion can be achieved, thereby achieving stable oil pressure output, stable oil return, and stable injection oil pressure in the test cavity. In addition, the test oil can be kept clean and not contaminated, and the amount of test oil used can also be reduced.

[0039] The beneficial effects of the oil injection test system of the utility model oil seal rotary test bench are:

[0040] Save test oil: By precisely controlling the opening and closing of the pneumatic ball valve, the system ensures that the test oil is fully absorbed into the force-bearing cylinder before flowing to the test product, thereby greatly reducing the amount of test oil used;

[0041] Stable output pressure: Through the control of the load-bearing cylinder and the output cylinder, it can provide stable output pressure without pressure deviation, ensuring the accuracy of the test results;

[0042] Easy to clean and replace oil: The system is independent and can be easily cleaned when changing oil to avoid contamination between different oils. The system can be installed independently inside the equipment, shortening the pressure loss of the oil pipe and improving efficiency.

[0043] The above description is merely an embodiment of the present invention and does not limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made using the contents of the present invention specification, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. An oil seal rotary test bench oil injection test system, characterized in that: include: The base platform, oil tank, output oil cylinder and force oil cylinder, the oil tank is used to store test oil, the oil tank is installed at the high position of the base platform through the support frame, the output oil cylinder and force oil cylinder are installed at the low position of the base platform through the connecting plate, The output oil cylinder is connected to the hydraulic station, and the piston rod of the output oil cylinder is connected to the piston rod of the force oil cylinder. The bottom of the oil tank is provided with an oil tank outlet pipe, and the oil tank outlet pipe is installed with a pneumatic ball valve 1, a three-way joint and a pneumatic ball valve 2. Connector 1 and connector 2 of the three-way joint are connected to pneumatic ball valve 1 and pneumatic ball valve 2 respectively, and connector 3 of the three-way joint is connected to a stressed oil cylinder oil pipe, and the other end of the stressed oil cylinder oil pipe is connected to the front end interface of the stressed oil cylinder.

2. The oil seal rotary test bench oil injection test system according to claim 1, characterized in that: The output oil cylinder and the force receiving oil cylinder are kept in a concentric arrangement.

3. The oil seal rotary test bench oil injection test system according to claim 1, characterized in that: The output oil cylinder is connected to two oil inlet pipes, namely output oil cylinder oil inlet pipe 1 and output oil cylinder oil inlet pipe 2. The output oil cylinder oil inlet pipe 1 and output oil cylinder oil inlet pipe 2 are both connected to a hydraulic station for providing hydraulic power.

4. The oil seal rotary test bench oil injection test system according to claim 3, characterized in that: The output oil cylinder may also be connected to a reversing valve, through which the extension and retraction actions of the output oil cylinder are controlled to control the movement direction of the output oil cylinder.

5. The oil seal rotary test bench oil injection test system according to claim 1, characterized in that: The inlet of the pneumatic ball valve 1 is connected to the oil tank outlet pipe, the outlet of the pneumatic ball valve 1 is connected to the connector 1 of the three-way joint, the connector 2 of the three-way joint is connected to the inlet of the pneumatic ball valve 2, and the outlet of the pneumatic ball valve 2 is connected to the oil outlet pipe.

6. The oil seal rotary test bench oil injection test system according to claim 5, characterized in that: The oil outlet oil pipe is directly connected to the test cavity end of the test product.

7. The oil seal rotary test bench oil injection test system according to claim 1, characterized in that: The rear end interface of the stressed oil cylinder is blocked by a plug.

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