Vacuum simulation test device for magnetofluid sealing device

Abstract

The utility model relates to the field of magnetic fluid sealing device testing, in particular to a vacuum simulation testing device for a magnetic fluid sealing device, which comprises a testing table, a heightening frame fixed at the upper end of the testing table, a simulation mechanism mounted at the upper end of the heightening frame, and a driving mechanism. When the device works, a lower extending frame can move through retraction of an electric push rod, and then through threaded connection of a screw rod and a lifting plate and sliding connection of the lifting plate and a guide rod, the lifting plate can ascend and descend after the screw rod is driven by a small motor to rotate; in this way, the driving gear can be moved to the driven gear with the larger size or the smaller size, then the electric push rod extends outwards to drive the lower extending frame to reset so that the driving gear can be meshed with the corresponding driven gear, and therefore the rotating speed transmitted by the driving gear can be increased and decreased according to needs. Therefore, the simulation flexibility of the device is better.

Description

TECHNICAL FIELD

[0001] The utility model relates to magnetic fluid sealing device test field especially relates to a kind of vacuum simulation test device of magnetic fluid sealing device. BACKGROUND

[0002] Magnetic fluid sealing technology is developed on the basis of magnetic fluid, when magnetic fluid is injected into the gap of magnetic field, it can fill the entire gap, form a kind of liquid O-shaped sealing ring. The function of magnetic fluid sealing device is to transmit rotary motion to sealed container, commonly used for vacuum sealing.

[0003] Through the retrieval announcement No.CN212082744U patent file, the patent file discloses "a kind of vacuum simulation test device of magnetic fluid sealing device, the motor of this device drives the transmission shaft rotation of the magnetic fluid sealing device to be detected by reducer and drive shaft, angle sensor is used to detect the rotational speed of transmission shaft, to facilitate the rotational speed of transmission shaft by motor control, the sealing property and working performance of magnetic fluid sealing device are detected by simulating the working environment of magnetic fluid sealing device.";

[0004] And although the above-mentioned device can reduce the driving speed of drive shaft by reducer, the above-mentioned device is difficult to improve the rotational speed of drive shaft, so that the device is difficult to simulate high-speed test for magnetic fluid sealing device, so that the device is difficult to completely simulate the actual situation of device use, so that the above-mentioned simulation test device still has certain deficiency. UTILITY MODEL CONTENT

[0005] The utility model aims at solving above-mentioned problem and provides a kind of vacuum simulation test device of magnetic fluid sealing device.

[0006] The utility model realizes the above-mentioned purpose by the following technical scheme:

[0007] A kind of vacuum simulation test device of magnetic fluid sealing device, including test table, test table upper end is fixed with pad height frame, pad height frame upper end is installed with simulation mechanism, still include driving mechanism;

[0008] The driving mechanism comprises a lower extension frame, which is slidingly connected to the lower end of the test table, a screw rod being rotatably connected to the front end of the lower extension frame, a small motor being installed at the input end of the screw rod, a guide rod being fixed to the rear end of the lower extension frame, a lifting plate being threadedly connected to the outer periphery of the screw rod, the lifting plate being slidingly connected to the guide rod, a long-shaft motor being installed in the middle of the lifting plate, a driving gear being fixed to the upper end of the output shaft of the long-shaft motor, a mounting strip being arranged on one side of the lower extension frame, the mounting strip being fixed to the test table, an electric push rod being installed in the middle of the mounting strip, the extension end of the electric push rod being fixed to the lower extension frame, a rotating seat being fixed to the middle of the test table, a rotating shaft being rotatably connected to the middle of the rotating seat, a plurality of driven gears being fixed to the outer periphery of the rotating shaft, each of the driven gears being two centimeters smaller in diameter than the driven gear above it, a mounting disc being fixed to the upper end of the rotating shaft, and a magnetic fluid sealing device body being installed at the upper end of the mounting disc.

[0009] Preferably, the lifting plate is located at the middle position of the screw rod and the guide rod, and the driving gear is flush with the middle driven gear.

[0010] Preferably, the driving gear and the middle driven gear are in meshing engagement, and the driving gear and the middle driven gear are of the same size.

[0011] Preferably, the simulation mechanism comprises a sealing cover, the sealing cover being fixed to the upper end of the heightening frame, an air pipe being fixed to one end of the sealing cover, a valve body being installed in the middle of the air pipe, an air pressure gauge being installed on the front side of the air pipe, the detection part of the air pressure gauge being located in the interior of the sealing cover, a door being installed at the front end of the sealing cover, an observation plate being fixed to the middle of the door, a plurality of side ears being fixed to one end of the observation plate, lock bolts being arranged in the middle of the side ears, and the lock bolts being threadedly connected to the sealing cover through the side ears.

[0012] Preferably, the observation plate is made of transparent material, and an internal hexagonal hole is formed at the front end of the lock bolt.

[0013] Preferably, rubber sealing rings are arranged on the front end face of the sealing cover and the rear end face of the door.

[0014] Compared with the prior art, the beneficial effects are as follows:

[0015] During the operation of the device, the retraction of the electric push rod can move the lower extension frame, and then the screw thread connection between the screw rod and the lifting plate and the sliding connection between the lifting plate and the guide rod can make the lifting plate ascend or descend when the small motor drives the screw rod to rotate, which can make the driving gear move to the driven gear with larger or smaller size, and then the extension of the electric push rod drives the lower extension frame to reset so that the driving gear is engaged with the corresponding driven gear, which can make the rotation speed transmitted by the driving gear be adjusted as required, thereby making the flexibility of the device simulation better. BRIEF DESCRIPTION OF DRAWINGS

[0016] In order to more clearly illustrate the technical solutions of the embodiments of the present application or the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly introduced as follows. Obviously, the drawings in the following description are only some embodiments of the present application, and for those skilled in the art, other drawings can also be obtained from these drawings without creative labor.

[0017] Figure 1 is a structural schematic view of a magnetic fluid sealing device vacuum simulation test device of the present application;

[0018] Figure 2 is a structural schematic view of a magnetic fluid sealing device vacuum simulation test device driving mechanism of the present application;

[0019] Figure 3 is a partial structural schematic view of a magnetic fluid sealing device vacuum simulation test device driving mechanism of the present application;

[0020] Figure 4 is a structural schematic view of a magnetic fluid sealing device vacuum simulation test device simulation mechanism of the present application.

[0021] The following is the explanation of the reference signs:

[0022] 1, test table; 11, base; 12, fixing bolt; 2, heightening frame; 3, lower extension frame; 31, screw rod; 32, small motor; 33, guide rod; 34, lifting plate; 35, long shaft motor; 36, driving gear; 37, mounting strip; 38, electric push rod; 39, rotating seat; 310, rotating shaft; 311, driven gear; 4, sealing cover; 41, air pipe; 42, valve body; 43, air pressure gauge; 44, blocking door; 45, observation plate; 46, side ear; 47, locking bolt; 5, mounting disc; 51, magnetic fluid sealing device main body. DETAILED DESCRIPTION

[0023] In the description of the utility model, it is necessary to understand that the orientation or positional relation indicated by the terms "center", "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like is the orientation or positional relation shown based on the drawings, and is only for the convenience of describing the utility model and simplifying the description, and therefore cannot be understood as indicating or implying that the device or element indicated must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the utility model. In addition, the terms "first", "second" and the like are only for the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the technical features indicated. Therefore, the features limited by "first", "second" and the like can explicitly or implicitly include one or more of the features. In the description of the utility model, the meaning of "a plurality of" is two or more, unless otherwise specified.

[0024] In the description of the utility model, it should be explained that, unless otherwise specified and limited, the terms "mounting", "connection", "connection" should be understood broadly, for example, it can be fixed connection, or detachable connection, or integrally connected, it can be mechanical connection, or electrical connection, it can be directly connected, or indirectly connected through intermediate medium, it can be the communication inside two elements. For ordinary skilled in the art, the specific meaning of the above terms in the utility model can be understood through specific circumstances.

[0025] The utility model will be further described below in connection with the drawings:

[0026] As Figures 1-4 Indicated, a kind of magnetic fluid sealing device vacuum simulation test device, including test table 1, test table 1 upper end is fixed with pad high frame 2, pad high frame 2 upper end is equipped with simulation mechanism, still include driving mechanism.

[0027] Test table 1 lower end is fixed with multiple pedestals 11, multiple fixed bolts 12 are arranged in pedestal 11 middle;Device can be fixed to suitable position by fixed bolt 12.

[0028] The driving mechanism comprises a lower extension frame 3 which is slidingly connected to the lower end of the test table 1, a screw rod 31 which is rotatably connected to the front end of the lower extension frame 3, a small motor 32 which is installed at the input end of the screw rod 31, a guide rod 33 which is fixed to the rear end of the lower extension frame 3, a lifting plate 34 which is located at the middle position between the screw rod 31 and the guide rod 33, the lifting plate 34 being threadedly connected to the outer periphery of the screw rod 31 and slidingly connected to the guide rod 33, a long-shaft motor 35 which is installed in the middle of the lifting plate 34, a driving gear 36 which is fixed to the upper end of the output shaft of the long-shaft motor 35, a mounting strip 37 which is provided on one side of the lower extension frame 3 and fixed to the test table 1, an electric push rod 38 which is installed in the middle of the mounting strip 37 and fixed to the lower extension frame 3 at the telescopic end, a rotating seat 39 which is fixed to the middle of the test table 1, a rotating shaft 310 which is rotatably connected to the middle of the rotating seat 39, a plurality of driven gears 311 which are fixed to the outer periphery of the rotating shaft 310, each of the driven gears 311 being smaller in diameter than the driven gear 311 above it, the driving gear 36 being flush with the middle driven gear 311 and meshing with the middle driven gear 311, the driving gear 36 and the middle driven gear 311 being of the same size, the mounting disc 5 being fixed to the upper end of the rotating shaft 310, and the magnetic fluid sealing device main body 51 being installed on the upper end of the mounting disc 5. When the device is in operation, the retraction of the electric push rod 38 can move the lower extension frame 3, and then the screw rod 31 is threadedly connected to the lifting plate 34 and the lifting plate 34 is slidingly connected to the guide rod 33, so that the lifting plate 34 can be lifted after the small motor 32 drives the screw rod 31 to rotate. In this way, the driving gear 36 can be moved to the driven gear 311 which is larger or smaller in size. Then the electric push rod 38 is extended to drive the lower extension frame 3 to reset, so that the driving gear 36 meshes with the corresponding driven gear 311. In this way, the rotating speed transmitted by the driving gear 36 can be adjusted as needed, so that the flexibility of the device simulation is better.

[0029] The simulation mechanism comprises a sealing cover 4 which is fixed to the upper end of the heightening frame 2, an air pipe 41 which is fixed to one end of the sealing cover 4, a valve body 42 which is installed in the middle of the air pipe 41, an air pressure gauge 43 which is installed on the front side of the air pipe 41, the detection part of the air pressure gauge 43 being located in the inside of the sealing cover 4, a blocking door 44 which is installed on the front end of the sealing cover 4, rubber sealing rings which are provided on the front end face of the sealing cover 4 and the rear end face of the blocking door 44, an observation plate 45 which is fixed in the middle of the blocking door 44, the observation plate 45 being of transparent material, a plurality of side ears 46 which are fixed to one end of the observation plate 45, lock bolts 47 which are provided in the middle of the side ears 46, the front end of each lock bolt 47 being provided with an internal hexagonal hole, and the lock bolt 47 being threadedly connected to the sealing cover 4 through the side ear 46. The observation plate 45 is of transparent material, so that the magnetic fluid sealing device main body 51 in the inside of the sealing cover 4 can be observed when the device is in operation.

[0030] Working principle: when the device is working, the lower extension frame 3 can be moved by the retraction of the electric push rod 38, then through the threaded connection of the screw rod 31 and the lifting plate 34 and the sliding connection of the lifting plate 34 and the guide rod 33, the lifting plate 34 can be lifted after the small motor 32 drives the screw rod 31 to rotate, through this, the driving gear 36 can be moved to the driven gear 311 with larger size or smaller size, then the electric push rod 38 is extended to drive the lower extension frame 3 to reset, so that the driving gear 36 is engaged with the corresponding driven gear 311, through this, the rotating speed of the driving gear 36 can be adjusted according to the needs, so that the rotating speed of the rotating shaft 310 is adjusted, through this, the flexibility of the device simulation is better, after the preparation work is completed, the locking bolt 47 is unscrewed and the baffle door 44 is opened, then the magnetic fluid sealing device body 51 is installed on the mounting disc 5, then the baffle door 44 is closed and the locking bolt 47 is tightened to prepare for the simulation test process.

[0031] The basic principle, main features and advantages of the utility model are shown and described above. It should be understood by those skilled in the art that the utility model is not limited by the above embodiments, and the above embodiments and descriptions in the specification are only to illustrate the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model can have various changes and improvements, and these changes and improvements all fall within the scope of the utility model claimed.

Claims

1. A kind of magnetic fluid sealing device vacuum simulation test device, including test table (1), the upper end of the test table (1) is fixed with pad high frame (2), the upper end of the pad high frame (2) is installed with simulation mechanism, it is characterized by: The driving mechanism further comprises a lower extension frame (3) which is slidingly connected to the lower end of the test bench (1), a screw rod (31) which is rotatably connected to the front end of the lower extension frame (3), a small motor (32) which is installed at the input end of the screw rod (31), a guide rod (33) which is fixed to the rear end of the lower extension frame (3), a lifting plate (34) which is threadedly connected to the outer periphery of the screw rod (31) and slidingly connected to the guide rod (33), a long-shaft motor (35) which is installed in the middle of the lifting plate (34), a driving gear (36) which is fixed to the upper end of the output shaft of the long-shaft motor (35), a mounting strip (37) which is provided on one side of the lower extension frame (3) and fixed to the test bench (1), an electric push rod (38) which is installed in the middle of the mounting strip (37) and fixed to the lower extension frame (3), a rotating seat (39) which is fixed to the middle of the test bench (1), a rotating shaft (310) which is rotatably connected to the middle of the rotating seat (39), a plurality of driven gears (311) which are fixed to the outer periphery of the rotating shaft (310), wherein each driven gear (311) is two centimeters smaller in diameter than the driven gear (311) above it, and a mounting disc (5) which is fixed to the upper end of the rotating shaft (310) and on which a magnetic fluid sealing device main body (51) is installed. The lifting plate (34) is located at the middle position of the screw rod (31) and the guide rod (33), and the driving gear (36) is flush with the middle driven gear (311).

2. A vacuum analogue test device for a magnetic fluid seal device according to claim 1, characterised in that: The driving gear (36) and the middle driven gear (311) are in meshing engagement, and the driving gear (36) and the middle driven gear (311) are the same in size.

3. A vacuum analogue test device for a magnetic fluid seal device according to claim 1, wherein: The simulation mechanism further comprises a sealing cover (4) which is fixed to the upper end of the heightening frame (2), an air pipe (41) which is fixed to one end of the sealing cover (4), a valve body (42) which is installed in the middle of the air pipe (41), an air pressure gauge (43) which is installed on the front side of the air pipe (41) and has a detection part located inside the sealing cover (4), a shutter door (44) which is installed at the front end of the sealing cover (4), an observation plate (45) which is fixed in the middle of the shutter door (44), a plurality of side ears (46) which are fixed to one end of the observation plate (45), and locking bolts (47) which are provided in the middle of the side ears (46) and threadedly connected to the sealing cover (4) through the side ears (46).

4. A vacuum analogue test device for a magnetic fluid seal device according to claim 1, characterized in that: The observation plate (45) is made of transparent material, and an internal hexagonal hole is formed in the front end of the locking bolt (47).

5. A vacuum analogue test device for a magnetic fluid seal device according to claim 4, characterised in that: Rubber sealing rings are arranged on the front end face of the sealing cover (4) and the rear end face of the shutter door (44).

6. A vacuum analogue test device for a magnetic fluid seal device according to claim 4, wherein: ​

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