Lubricating oil evaporation loss tester

Abstract

The utility model relates to the technical field of evaporation loss determination, and discloses a lubricating oil evaporation loss determinator which comprises a tank body, a guide pipe is arranged at the outlet end of the tank body, the first outlet end of the guide pipe is connected with a pressure stabilizing mechanism through a first branch pipe, and the second outlet end of the guide pipe is connected with an external vacuum pump through a second branch pipe. The second branch pipe is a hose, the pressure stabilizing mechanism is a telescopic cylinder, two sets of clamping plates are arranged at the moving end of the pressure stabilizing mechanism, and the second branch pipe is located between the two sets of clamping plates. And the opening and closing mechanism is arranged to be matched with the clamping plate, the size of an outlet of the second branch pipe can be controlled according to the pressure in the tank body, and it is guaranteed that the pressure dynamic range of the tank body is small when the vacuum pump conducts suction.

Description

Technical Field

[0001] The present application relates to the technical field of evaporation loss measurement, and in particular to a lubricating oil evaporation loss measuring instrument. Background Art

[0002] The lubricating oil evaporation loss determination method is to evaluate the evaporation stability and service life of the lubricating oil by measuring the evaporation loss of the lubricating oil under certain conditions. The existing lubricating oil evaporation loss determination instrument uses the weight difference before and after the lubricating oil is heated to determine the evaporation loss of the lubricating oil. In order to ensure a constant pressure during evaporation, the existing lubricating oil evaporation loss determination instrument is equipped with a vacuum pump to extract the gaseous lubricating oil in the heating tank. Although the vacuum pump can effectively release the pressure when extracting the gas, it will cause the pressure in the heating tank to be unstable. Therefore, a lubricating oil evaporation loss determination instrument is proposed. Utility Model Content

[0003] In order to solve the problem that although the vacuum pump can effectively release pressure when extracting gas, it will cause unstable pressure in the heating tank, the present application provides a lubricating oil evaporation loss measuring instrument.

[0004] The present application provides a lubricating oil evaporation loss measuring instrument adopts the following technical solution:

[0005] A lubricating oil evaporation loss measuring instrument comprises a tank body, a conduit is arranged at the outlet end of the tank body, a first outlet end of the conduit is connected to a pressure stabilizing mechanism via a first branch pipe, a second outlet end of the conduit is connected to an external vacuum pump via a second branch pipe, and the second branch pipe is a hose, the pressure stabilizing mechanism is a retractable cylinder, two groups of clamping plates are arranged at the movable end of the pressure stabilizing mechanism, the second branch pipe is located between the two groups of clamping plates, and a tensioning and closing mechanism is arranged between the two groups of clamping plates, so that the two groups of clamping plates clamp or loosen the second branch pipe.

[0006] Preferably, the pressure stabilizing mechanism comprises a telescopic cylinder installed at one end of the conduit, and one end of the telescopic cylinder is fixedly connected to a movable plate, and the opening and closing mechanism is arranged on the surface of the movable plate.

[0007] Preferably, a telescopic plate is fixedly connected to the surface of the movable plate, a sleeve is sleeved on the surface of the telescopic plate, the telescopic plate forms a moving pair inside the sleeve, and the moving direction of the telescopic plate is parallel to the telescopic direction of the telescopic tube, and one end of the sleeve is connected to the first branch pipe through a bracket.

[0008] Preferably, the opening and closing mechanism includes a sliding seat fixedly mounted on the surface of the movable plate, a guide rod fixedly connected to the sliding seat, the guide rod is arranged parallel to the opening and closing direction of the two groups of clamps, and the surfaces of the two groups of clamps are provided with mounting openings adapted to the guide rod, the guide rod is cooperatively installed inside the mounting openings, a wedge block is arranged between the two groups of clamps, the surfaces of the clamps are rotatably connected with guide wheels movable along the surfaces of the wedge blocks, and a spring is sleeved on the surface of the guide rod, and when the two groups of clamps are opened, the spring is in a compressed or extended state.

[0009] Preferably, both sides of the wedge block are arranged as inclined surfaces, and the width of the wedge block gradually increases along the extension direction of the telescopic cylinder.

[0010] In summary, this application includes the following beneficial technical effects:

[0011] The utility model provides a pressure stabilizing mechanism. When the internal pressure of the tank body increases, the telescopic cylinder is extended by the pressure, thereby increasing the volume of the device body and achieving a certain pressure stabilizing effect. In addition, by providing an opening and closing mechanism in cooperation with the clamping plate, the outlet size of the second branch pipe can be controlled according to the pressure size in the tank body, thereby ensuring that the pressure dynamic range of the tank body is small when the vacuum pump is sucking. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a schematic diagram of the overall structure of the embodiment of the application;

[0013] Figure 2 It is a schematic diagram of the structure of a part of the embodiment of the application;

[0014] Figure 3 Application Example Figure 2 The enlarged view of point A in the middle;

[0015] Figure 4 It is a schematic diagram of the structure of the sleeve and the telescopic plate of the embodiment of the application.

[0016] Explanation of the accompanying drawings: 1. tank body; 2. conduit; 3. first branch pipe; 4. telescopic cylinder; 5. movable plate; 6. second branch pipe; 7. clamping plate; 8. wedge block; 9. sliding seat; 10. guide rod; 11. spring; 12. guide wheel; 13. sleeve; 14. telescopic plate. DETAILED DESCRIPTION

[0017] The following is combined with Figure 1-4 This application is described in further detail.

[0018] The embodiment of the present application discloses a lubricating oil evaporation loss measuring instrument, including a tank body 1, a conduit 2 is provided at the outlet end of the tank body 1, a first outlet end of the conduit 2 is connected to a pressure stabilizing mechanism via a first branch pipe 3, a second outlet end of the conduit 2 is connected to an external vacuum pump via a second branch pipe 6, and the second branch pipe 6 is a hose, the pressure stabilizing mechanism is a retractable cylinder, two groups of clamps 7 are provided at the movable end of the pressure stabilizing mechanism, the second branch pipe 6 is located between the two groups of clamps 7, and a tensioning and closing mechanism is provided between the two groups of clamps 7, so that the two groups of clamps 7 clamp or loosen the second branch pipe 6.

[0019] Furthermore, the pressure stabilizing mechanism includes a telescopic cylinder 4 installed at one end of the conduit 2 , and one end of the telescopic cylinder 4 is fixedly connected to a movable plate 5 , and the opening and closing mechanism is arranged on the surface of the movable plate 5 .

[0020] Furthermore, a telescopic plate 14 is fixedly connected to the surface of the movable plate 5, and a sleeve 13 is sleeved on the surface of the telescopic plate 14. The telescopic plate 14 forms a moving pair inside the sleeve 13, and the moving direction of the telescopic plate 14 is parallel to the telescopic direction of the telescopic tube 4. One end of the sleeve 13 is connected to the first branch pipe 3 through a bracket.

[0021] In this embodiment, when the tank body 1 is heated, local evaporation of the lubricating oil will cause the pressure inside the tank body 1 to increase. By providing a pressure stabilizing mechanism, when the internal pressure of the tank body 1 increases, the telescopic cylinder 4 is stretched due to the pressure, thereby increasing the volume of the device body and achieving a certain pressure stabilizing effect. In actual application, the material of the telescopic cylinder 4 can be selected from elastic rubber material that is resistant to high temperatures.

[0022] Furthermore, the opening and closing mechanism includes a slide 9 fixedly mounted on the surface of the movable plate 5, and a guide rod 10 is fixedly connected to the slide 9. The guide rod 10 is arranged parallel to the opening and closing direction of the two groups of clamps 7, and the surfaces of the two groups of clamps 7 are provided with mounting openings adapted to the guide rod 10, and the guide rod 10 is cooperatively installed inside the mounting openings. A wedge block 8 is arranged between the two groups of clamps 7, and the surfaces of the clamps 7 are rotatably connected with a guide wheel 12 that can move along the surface of the wedge block 8, and a spring 11 is sleeved on the surface of the guide rod 10. When the two groups of clamps 7 are opened, the spring 11 is in a compressed or extended state.

[0023] Furthermore, both sides of the wedge block 8 are arranged as inclined surfaces, and the width of the wedge block 8 gradually increases along the extension direction of the telescopic cylinder 4 .

[0024] In this embodiment, by setting a second branch pipe 6 to connect to an external vacuum pump, the gaseous lubricating oil inside the vacuum pump suction device can be used to further achieve the effect of stabilizing the pressure, and by setting an opening and closing mechanism in cooperation with the clamping plate 7, the outlet size of the second branch pipe 6 can be controlled according to the pressure in the tank body 1, ensuring that the dynamic range of the pressure of the tank body 1 is small when the vacuum pump is sucking. Specifically, when the pressure in the tank body 1 increases, the telescopic cylinder 4 extends, driving the moving plate 5, the slide seat 9 and the two groups of clamping plates 7 to move, and the guide wheels 12 on the two groups of clamping plates 7 move along the inclined surfaces on both sides of the wedge block 8. Since the width of the wedge block 8 gradually increases along the extension direction of the telescopic cylinder 4, the distance between the two groups of guide wheels 12 As the pressure inside the tank body 1 increases, the distance between the two groups of clamps 7 also increases gradually, and the opening of the second branch pipe 6 also increases gradually; similarly, when the pressure inside the tank body 1 decreases, the telescopic cylinder 4 contracts, driving the movable plate 5, the slide seat 9 and the two groups of clamps 7 to move back, and the guide wheels 12 on the two groups of clamps 7 move back along the inclined surfaces on both sides of the wedge block 8. Since the width of the wedge block 8 gradually decreases along the contraction direction of the telescopic cylinder 4, the two groups of clamps 7 are moved closer to each other under the elastic force of the spring 11, thereby reducing the opening of the second branch pipe 6, that is, the greater the pressure inside the tank body 1, the larger the opening of the second branch pipe 6, and the more air the vacuum pump draws; the smaller the pressure inside the tank body 1, the smaller the opening of the second branch pipe 6, and the less air the vacuum pump draws.

[0025] Finally, a few points should be explained: First, in the description of this application, it should be noted that, unless otherwise specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, which may refer to mechanical connection or electrical connection, or internal communication between two components, or direct connection. "upper", "lower", "left", "right", etc. are only used to indicate relative positional relationships. When the absolute position of the object being described changes, the relative positional relationship may change;

[0026] Secondly: In the drawings of the embodiments disclosed in the present utility model, only the structures related to the embodiments disclosed in the present utility model are involved, and other structures can refer to the general design. In the absence of conflict, the same embodiment and different embodiments of the present utility model can be combined with each other;

[0027] Finally: The above description is only a preferred embodiment of the present utility model and is 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 should be included in the protection scope of the present utility model.

[0028] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A lubricating oil evaporation loss measuring instrument, comprising a tank body (1), characterized in that: The outlet end of the tank body (1) is provided with a conduit (2), the first outlet end of the conduit (2) is connected to a pressure stabilizing mechanism via a first branch pipe (3), the second outlet end of the conduit (2) is connected to an external vacuum pump via a second branch pipe (6), and the second branch pipe (6) is a hose. The pressure stabilizing mechanism is a retractable cylinder, and the movable end of the pressure stabilizing mechanism is provided with two groups of clamping plates (7), the second branch pipe (6) is located between the two groups of clamping plates (7), and a tensioning and closing mechanism is provided between the two groups of clamping plates (7), so that the two groups of clamping plates (7) clamp or release the second branch pipe (6).

2. A lubricating oil evaporation loss measuring instrument according to claim 1, characterized in that: The pressure stabilizing mechanism comprises a telescopic cylinder (4) installed at one end of the conduit (2), one end of the telescopic cylinder (4) is fixedly connected to a movable plate (5), and the opening and closing mechanism is arranged on the surface of the movable plate (5).

3. A lubricating oil evaporation loss measuring instrument according to claim 2, characterized in that: A telescopic plate (14) is fixedly connected to the surface of the movable plate (5), a sleeve (13) is sleeved on the surface of the telescopic plate (14), the telescopic plate (14) forms a moving pair inside the sleeve (13), and the moving direction of the telescopic plate (14) is parallel to the telescopic direction of the telescopic tube (4), and one end of the sleeve (13) is connected to the first branch pipe (3) through a bracket.

4. A lubricating oil evaporation loss measuring instrument according to claim 3, characterized in that: The opening and closing mechanism comprises a slide seat (9) fixedly mounted on the surface of the movable plate (5), a guide rod (10) fixedly connected to the slide seat (9), the guide rod (10) being arranged parallel to the opening and closing direction of the two groups of clamping plates (7), and the surfaces of the two groups of clamping plates (7) are provided with mounting openings adapted to the guide rod (10), the guide rod (10) being mounted in cooperation inside the mounting openings, a wedge block (8) being arranged between the two groups of clamping plates (7), the surfaces of the clamping plates (7) being rotatably connected with a guide wheel (12) movable along the surface of the wedge block (8), and a spring (11) being sleeved on the surface of the guide rod (10), and when the two groups of clamping plates (7) are opened, the spring (11) is in a compressed or extended state.

5. The lubricating oil evaporation loss measuring instrument according to claim 4, characterized in that: Both sides of the wedge block (8) are arranged as inclined surfaces, and the width of the wedge block (8) gradually increases along the extension direction of the telescopic cylinder (4).

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