Novel pressure gauge sealing oil filling device

Abstract

The utility model provides a novel pressure gauge sealing oil filling device, which belongs to the technical field of instrument equipment, and comprises a box body, the front part of the box body is in sliding connection with a pair of sliding blocks through a sliding chute, one side of each sliding block is in threaded connection with a V-shaped clamp through a bolt, one side of the box body is fixedly connected with a servo motor I, and the servo motor II is in threaded connection with the V-shaped clamp through a bolt. The output end of the first servo motor is coaxially and fixedly connected with a two-way threaded rod, the two-way threaded rod is in threaded connection with each sliding block, a first oil injection pipe is arranged on the top of the box body, a wireless liquid level sensor is arranged at the bottom of one side of the first oil injection pipe, and a hydraulic cylinder, an oil injection cylinder and a filter are fixedly installed on the rear portion of the box body. By arranging the wireless liquid level sensor, the oil injection amount can be accurately controlled, moisture in glycerin and silicone oil can be absorbed through the filter, and the measurement accuracy of the pressure gauge is guaranteed.

Description

Technical Field

[0001] The utility model belongs to the technical field of instrument equipment, and in particular relates to a novel sealing oil-filling device for a pressure gauge. Background Art

[0002] The oil filled in the pressure gauge is also called "damping oil", mainly glycerin or silicone oil. After filling with oil, the resistance inside the gauge increases, so the pointer is more stable, which can prevent the pointer from vibrating. It is generally used in harsh environments or when the pressure in the system fluctuates greatly to make the pressure gauge reading accurate and extend its service life. At the same time, the damping fluid inside the pressure gauge can play a lubricating and sealing role to ensure the normal operation of the pressure gauge.

[0003] The existing pressure gauge sealing oil filling device still has the following shortcomings: First, the existing pressure gauge sealing oil filling device cannot accurately control the amount of oil injected during the oil filling process. Excessive injection of damping fluid will cause the internal pressure of the pressure gauge to increase, affecting the normal operation of the pressure gauge; Second, the damping oil added to the existing pressure gauge sealing oil filling device is mainly glycerin or silicone oil. Glycerin and silicone oil are both hygroscopic and will absorb moisture in the air. During oil filling, they will enter the interior of the pressure gauge along with the damping fluid, affecting the measurement accuracy. Utility Model Content

[0004] The technical solution of the present utility model is achieved as follows:

[0005] A new type of pressure gauge sealing and oil filling device includes a box body, a pair of sliders are slidably connected to the front of the box body through a slide groove, each of the sliders is provided with a through threaded hole, and each slider is threadedly connected to a V-shaped clamp on one side through a bolt, a servo motor is fixedly connected to one side of the box body, and the output end of the servo motor is coaxially fixedly connected to a bidirectional threaded rod, the bidirectional threaded rod is threadedly connected to each slider, and the other end of the bidirectional threaded rod is rotatably connected to the box body, the front of the box body is threadedly connected to a gauge base through a bolt, an oil filling pipe is provided on the top of the box body, and a wireless liquid level sensor is provided at the bottom of one side of the oil filling pipe.

[0006] Preferably, a hydraulic cylinder, an oil filling cylinder and a filter are fixedly installed at the rear of the box body, one end of the hydraulic cylinder piston rod is movably connected to the oil filling cylinder, the bottom of the oil filling cylinder is connected to an oil filling pipe 2, and the top and bottom of the filter are both connected to an oil filling pipe 2.

[0007] Preferably, an oil filling nozzle is provided at the bottom of the oil filling pipe, a plurality of exhaust grooves are provided on the side surface of the oil filling nozzle, a liquid level sensing probe is fixedly connected to the output end of the oil filling nozzle, and a signal transmission line is provided between the liquid level sensing probe and the wireless liquid level sensor.

[0008] Preferably, a servo motor 2 is fixedly connected to the top of the box body, the output end of the servo motor 2 is coaxially fixedly connected to the screw rod, the screw rod is threadedly connected to a screw nut, one side of the screw nut is fixedly connected to the oil filling pipe 1, one end of the oil filling pipe 1 is sleeved inside the oil filling pipe 2, and the oil filling pipe 1 is slidably connected to the oil filling pipe 2.

[0009] Preferably, a feeding port is provided at the bottom of one side of the oil filling cylinder, and a one-way valve is provided in communication with the feeding port.

[0010] Preferably, a dehydrating agent and a ceramic filter plate are respectively provided inside the filter.

[0011] Compared with the prior art, the present invention has the following advantages:

[0012] The utility model can detect the liquid level of the injected damping liquid by arranging a wireless liquid level sensor, thereby realizing accurate control of the injected oil amount. A plurality of exhaust grooves are provided on the side surface of the oil filling nozzle to discharge the gas inside the pressure gauge, thereby preventing the internal pressure of the pressure gauge from increasing when the damping liquid is injected, thereby preventing the normal operation of the pressure gauge. The filter can absorb the moisture in the glycerin and silicone oil, purify the damping liquid, and ensure the measurement accuracy of the pressure gauge. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0014] Figure 1 This is a structural schematic diagram of a new pressure gauge sealing oil filling device proposed by the utility model.

[0015] Figure 2 This is a structural schematic diagram of a new pressure gauge sealing oil filling device proposed by the utility model.

[0016] Figure 3 A new type of pressure gauge sealing oil filling device proposed by this utility model Figure 1 Enlarged schematic diagram of point A in the middle.

[0017] Figure 4 This is a schematic diagram of the telescopic structure of the oil filling pipe of a new pressure gauge sealing oil filling device proposed by the utility model.

[0018] Figure 5 The utility model provides a cross-sectional schematic diagram of a filter of a novel pressure gauge sealing oil filling device.

[0019] In the figure: 1 box, 2 slider, 3 V-type clamp, 4 servo motor 1, 5 bidirectional threaded rod, 6 bearing table, 7 oil filling pipe 1, 8 wireless liquid level sensor, 9 hydraulic cylinder, 10 oil filling cylinder, 11 filter, 12 oil filling pipe 2, 13 oil filling nozzle, 14 liquid level sensor probe, 15 servo motor 2, 16 screw, 17 screw nut, 18 dehydrating agent, 19 ceramic filter plate. DETAILED DESCRIPTION

[0020] The following will clearly and completely describe the technical solution of the present invention in conjunction with the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0021] Reference Figure 1-Figure 5 , a new type of pressure gauge sealing oil filling device, including:

[0022] Box body 1, the front part of the box body 1 is slidably connected to a pair of sliders 2 through a slide groove, each slider 2 is provided with a through threaded hole, and one side of each slider 2 is threadedly connected to a V-shaped clamp 3 through a bolt, and a servo motor 4 is fixedly connected to one side of the box body 1, and the output end of the servo motor 4 is coaxially fixedly connected to a bidirectional threaded rod 5, the bidirectional threaded rod 5 is threadedly connected to each slider 3, and the other end of the bidirectional threaded rod 5 is rotatably connected to the box body 1, and the servo motor 4 drives the bidirectional threaded rod 5 to rotate so that the two sliders 3 move toward each other along the bidirectional threaded rod 5, and the V-shaped clamps 3 threadedly connected to the sliders 3 are close to each other to clamp the pressure gauge, and the front part of the box body 1 is threadedly connected to a gauge table 6 through a bolt, and the pressure gauge is placed in the groove above the gauge table 6. An oil filling pipe 7 is provided on the top of the box body 1, and a wireless liquid level sensor 8 is provided at the bottom of one side of the oil filling pipe 7;

[0023] A hydraulic cylinder 9, an oil injection cylinder 10, and a filter 11 are fixedly installed at the rear of the box body 1. One end of the piston rod of the hydraulic cylinder 9 is movably connected to the oil injection cylinder 10. The bottom of the oil injection cylinder 10 is connected to a second oil injection pipe 12. The top and bottom of the filter 11 are both connected to the second oil injection pipe 12. The piston rod of the hydraulic cylinder 9 pushes the piston inside the oil injection cylinder 10. The damping fluid enters the input end of the filter 11 along the second oil injection pipe 12. After the water is filtered, it enters the second oil pipe 12 from the output end of the filter 11.

[0024] The bottom of the oil filling pipe 7 is connected to a filling nozzle 13, and a plurality of exhaust grooves are provided on the side surface of the oil filling nozzle 13. The exhaust grooves can discharge the gas inside the pressure gauge to prevent the internal pressure of the pressure gauge from increasing when the damping liquid is injected. The output end of the oil filling nozzle 13 is fixedly connected to a liquid level sensing probe 14. A signal transmission line is provided between the liquid level sensing probe 14 and the wireless liquid level sensor 8. The liquid level sensing probe 14 can sense the liquid level of the damping liquid. The liquid level signal is transmitted to the wireless liquid level sensor 8 through the signal transmission line. When the injected damping liquid reaches the preset liquid level, the signal antenna of the wireless liquid level sensor 8 will transmit a signal to control the hydraulic cylinder 9 to stop working, thereby accurately controlling the amount of injected oil;

[0025] A servo motor 2 15 is fixedly connected to the top of the box body. The output end of the servo motor 2 15 is coaxially fixedly connected to the screw rod 16. The screw rod 16 is threadedly connected to a screw nut 17. One side of the screw nut 17 is fixedly connected to the oil filling pipe 1 7. One end of the oil filling pipe 1 7 is sleeved inside the oil filling pipe 2 12. The oil filling pipe 1 7 is slidably connected to the oil filling pipe 2 12. The servo motor 2 15 drives the screw rod 16 to rotate and causes the screw nut 17 to reciprocate up and down, so that the oil filling nozzle 13 set on one side of the oil filling pipe 1 7 can be connected to the oil filling hole of the pressure gauge.

[0026] A feeding port is provided at the bottom of one side of the oil filling cylinder 10, and a one-way valve is provided in the feeding port. When the damping liquid in the oil filling cylinder 10 is consumed, the oil can be replenished by connecting to an external oil tank through the feeding port.

[0027] A dehydrating agent 18 and a ceramic filter plate 19 are respectively provided inside the filter 11. The damping liquid first passes through the dehydrating agent 18 to filter out water, and then passes through the ceramic filter plate 19 to filter out other impurities that may be contained.

[0028] The functional principle of this utility model can be explained through the following operation modes:

[0029] Place the pressure gauge in the groove above the gauge table 6. The servo motor 1 4 drives the bidirectional threaded rod 5 to rotate so that the two sliders 3 move toward each other along the bidirectional threaded rod 5. The V-shaped clamps 3 threadedly connected to the sliders 3 are close to each other to clamp the pressure gauge.

[0030] The piston rod of the hydraulic cylinder 9 pushes the piston inside the oil filling cylinder 10, causing the damping fluid to enter the input end of the filter 11 along the oil filling pipe 12. The damping fluid first passes through the dehydrating agent 18 to filter out moisture, then passes through the ceramic filter plate 19 to filter out other impurities that may be contained, and then enters the oil pipe 12 from the output end of the filter 11. When the damping fluid inside the oil filling cylinder 10 is consumed, it can be connected to an external oil tank through the refueling port for oil refueling.

[0031] The servo motor 2 15 drives the screw 16 to rotate and causes the screw nut 17 to reciprocate up and down, so that the oil filling nozzle 13 set at one end of the oil filling pipe 1 7 can be connected with the oil filling hole of the pressure gauge. The exhaust groove opened on the side surface of the oil filling nozzle 13 can discharge the gas inside the pressure gauge to prevent the internal pressure of the pressure gauge from increasing when the damping liquid is injected. The liquid level sensing probe 14 can sense the liquid level of the damping liquid, and the liquid level signal is transmitted to the wireless liquid level sensor 8 through the signal transmission line. When the injected damping liquid reaches the preset liquid level, the signal antenna of the wireless liquid level sensor 8 will transmit a signal to control the hydraulic cylinder 9 to stop working, thereby accurately controlling the amount of injected oil.

[0032] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A novel pressure gauge sealing oil filling device, comprising a box (1), characterized in that: The front of the box (1) is slidably connected to a pair of sliders (2) through a slide groove, each of the sliders (2) is provided with a through threaded hole, and one side of each slider (2) is threadedly connected to a V-shaped clamp (3) through a bolt. A servo motor (4) is fixedly connected to one side of the box (1), and the output end of the servo motor (4) is coaxially fixedly connected to a bidirectional threaded rod (5), and the bidirectional threaded rod (5) is threadedly connected to each slider (3), and the other end of the bidirectional threaded rod (5) is rotatably connected to the box (1). The front of the box (1) is threadedly connected to a bearing platform (6) through a bolt, and an oil filling pipe (7) is provided on the top of the box (1), and a wireless liquid level sensor (8) is provided at the bottom of one side of the oil filling pipe (7).

2. A new pressure gauge sealing oil filling device according to claim 1, characterized in that: A hydraulic cylinder (9), an oil injection cylinder (10) and a filter (11) are fixedly mounted on the rear portion of the box body (1), one end of the piston rod of the hydraulic cylinder (9) is movably connected to the oil injection cylinder (10), a second oil injection pipe (12) is provided at the bottom of the oil injection cylinder (10), and a second oil injection pipe (12) is provided at the top and bottom of the filter (11).

3. A new pressure gauge sealing oil filling device according to claim 2, characterized in that: The bottom of the oil filling pipe (7) is connected to an oil filling nozzle (13), and a plurality of exhaust grooves are provided on the side surface of the oil filling nozzle (13). The output end of the oil filling nozzle (13) is fixedly connected to a liquid level sensing probe (14), and a signal transmission line is provided between the liquid level sensing probe (14) and the wireless liquid level sensor (8).

4. A new pressure gauge sealing oil filling device according to claim 3, characterized in that: The top of the box body is fixedly connected to a servo motor 2 (15), the output end of the servo motor 2 (15) is coaxially fixedly connected to a screw rod (16), the screw rod (16) is threadedly connected to a screw nut (17), one side of the screw nut (17) is fixedly connected to an oil injection pipe 1 (7), one end of the oil injection pipe 1 (7) is sleeved inside the oil injection pipe 2 (12), and the oil injection pipe 1 (7) is slidably connected to the oil injection pipe 2 (12).

5. A new pressure gauge sealing oil filling device according to claim 4, characterized in that: A feeding port is provided at the bottom of one side of the oil filling cylinder (10), and a one-way valve is provided in communication with the feeding port.

6. A new pressure gauge sealing oil filling device according to claim 5, characterized in that: A dehydrating agent (18) and a ceramic filter plate (19) are respectively arranged inside the filter (11).

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