Pressure gauge calibrating device with protective structure

Abstract

The utility model provides a pressure gauge calibrating device with a protective structure, which belongs to the technical field of pressure gauge calibration, and comprises a base and a pressurizing pipe, the top of the base is fixedly connected with a plurality of vertical frames, the tops of the vertical frames are fixedly connected with a protective cover, the top of the base is fixedly connected with a plurality of clamping strips, one end of the pressurizing pipe is provided with a handle, and the other end of the pressurizing pipe is provided with a protective cover. A through pipe, an oil storage tank and a pressure measuring seat are fixedly connected to the top of the base, a reference pressure gauge is connected to the top of the through pipe through a first thread, a bolt is connected to the interior of the oil storage tank through a second thread, a connecting seat is fixedly connected to the top of the pressure measuring seat, and a mounting pipe is fixedly connected to the top of the connecting seat; according to the utility model, hydraulic oil in the to-be-measured pressure gauge is adsorbed and cleaned through the oil absorption cotton, the hydraulic oil is prevented from dripping, and the work environment is kept clean.

Description

Technical Field

[0001] The utility model relates to the technical field of pressure gauge calibration, in particular to a pressure gauge calibration device with a protective structure. Background Art

[0002] A pressure gauge calibration device is a device used to verify and calibrate various types of pressure gauges. These devices are designed to ensure the accuracy and reliability of pressure measurement tools, which play a vital role in industry, scientific research, and everyday life. Using a calibration device, pressure gauges of varying ranges can be precisely tested and adjusted to ensure accurate and consistent readings.

[0003] Pressure gauge calibration devices typically use hydraulic oil as the medium during operation. This is because hydraulic oil has excellent lubrication and stability, and its physical properties can be maintained consistently at different temperatures, which helps achieve accurate pressure measurement. However, after the test is completed, the hydraulic oil remaining inside the pressure gauge may drip out due to gravity. In this case, if left untreated, the hydraulic oil may contaminate the surrounding environment, including the floor, work surfaces, and other equipment, posing a potential safety hazard.

[0004] How to invent a pressure gauge calibration device with a protective structure to improve these problems has become an urgent problem to be solved by those skilled in the art. Utility Model Content

[0005] In order to make up for the above deficiencies, the utility model provides a pressure gauge calibration device with a protective structure, which aims to prevent the hydraulic oil from dripping and polluting the environment after the detection is completed.

[0006] The utility model is achieved in this way:

[0007] The utility model provides a pressure gauge calibration device with a protective structure, comprising a base and a pressurized tube, the top of the base is fixedly connected to a plurality of stands, the top of the stands is fixedly connected to a protective cover, the top of the base is fixedly connected to a plurality of clips, one end of the pressurized tube is provided with a handle, and the other end is provided with a pressure tube, the top of the base is fixedly connected to a through pipe, an oil storage tank, and a pressure measuring seat, the top of the through pipe is connected to a reference pressure gauge through a first thread, the inside of the oil storage tank is connected to a bolt through a second thread, the top of the pressure measuring seat is fixedly connected to a connecting seat, the top of the connecting seat is fixedly connected to a mounting tube, the mounting tube is connected to a pressure gauge to be measured through a second thread, a liquid stop assembly is provided inside the connecting seat, and an oil suction assembly is provided inside the mounting tube.

[0008] Preferably, the pressurized pipe is fixedly connected to the base through a plurality of clips, the pressure gauge to be measured is located inside the protective cover, and the pressurized pipe, through pipe, oil storage tank, and pressure measuring seat are all connected through the pressure pipe.

[0009] Preferably, the outer wall of the connecting seat is rotatably connected to a rotating shaft and a transmission gear, the outer wall of the rotating shaft is fixedly sleeved with a pinion, the side wall of the mounting tube is rotatably connected to a rotating shaft, the end of the rotating shaft is fixedly sleeved with a speed regulating gear, and the pinion and the transmission gear, the transmission gear and the speed regulating gear are all meshed.

[0010] Preferably, the oil suction assembly includes a drum fixedly sleeved on a rotating shaft, the outer wall of the drum is fixedly connected with a circular spring piece, the end of the circular spring piece is fixedly connected with a hollow shaft, the outer wall of the hollow shaft is fixedly sleeved with oil-absorbing cotton, and the inner wall of the mounting tube is fixedly connected with an extrusion sleeve.

[0011] Preferably, a plurality of oil holes are opened inside the hollow shaft, and the hollow shaft and the extrusion sleeve are extruded to extrude the oil-absorbing cotton.

[0012] Preferably, the liquid-stop assembly includes a threaded rod arranged on the inner side of the rotating shaft, the end of the threaded rod is fixedly connected to a square rod, the end of the square rod is fixedly connected to a sealing plate, the side wall of the sealing plate is fixedly connected to a sealing gasket, and the inner side wall of the connecting seat is fixedly connected to a bracket.

[0013] Preferably, the threaded rod is connected to the rotating shaft via a third thread, and the square rod penetrates the bracket and is slidably arranged with the bracket.

[0014] The beneficial effect of the utility model is that when the pressure of the pressure gauge to be tested is released by rotating the rotary shaft, the rotary shaft also drives the oil suction component to work through the transmission gear and the speed regulating gear, driving the oil-absorbing cotton to enter the interior of the pressure gauge to be tested, and adsorbing and cleaning the hydraulic oil remaining on the inner wall of the pressure gauge to be tested, reducing the hydraulic oil inside the pressure gauge to be tested, preventing the hydraulic oil from dripping, and keeping the working environment clean. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following is a brief introduction to the drawings required for use in the embodiments. It should be understood that the following drawings only show certain embodiments of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without creative work.

[0016] Figure 1 This is a schematic diagram of the three-dimensional structure of a pressure gauge calibration device with a protective structure provided by an embodiment of the present utility model;

[0017] Figure 2This is a schematic diagram of the position of the pinion of a pressure gauge calibration device with a protective structure provided by an embodiment of the present utility model;

[0018] Figure 3 This is a schematic structural diagram of an oil suction assembly of a pressure gauge calibration device with a protective structure provided by an embodiment of the utility model;

[0019] Figure 4 yes Figure 3 Enlarged view of point A in the middle;

[0020] Figure 5 This is a schematic cross-sectional view of a connection seat of a pressure gauge calibration device with a protective structure provided by an embodiment of the present utility model;

[0021] Figure 6 yes Figure 5 Enlarged view of point B in the middle.

[0022] In the figure: 1. Base; 2. Pressurized pipe; 3. Clamping strip; 4. Protective cover; 5. Handle; 6. Pressure pipe; 7. Through pipe; 8. Reference pressure gauge; 9. Stand; 10. Oil storage tank; 11. Bolt; 12. Pressure measuring seat; 13. Mounting pipe; 14. Pressure gauge to be measured; 15. Connecting seat; 16. Rotary shaft; 17. Transmission gear; 18. Speed regulating gear; 19. Rotating shaft; 20. Rotating drum; 21. Circular spring piece; 22. Hollow shaft; 23. Extrusion sleeve; 24. Oil-absorbing cotton; 25. Oil through hole; 26. Threaded rod; 27. Square rod; 28. Bracket; 29. Sealing plate; 30. Sealing gasket. 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 drawings in the embodiments of the present invention. Obviously, the described embodiments 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.

[0024] Example, refer to Figures 1-6A pressure gauge calibration device with a protective structure includes a base 1 and a pressure tube 2. The top of the base 1 is fixedly connected to a plurality of stands 9, the top of the stands 9 is fixedly connected to a protective cover 4, the top of the base 1 is fixedly connected to a plurality of clips 3, one end of the pressure tube 2 is provided with a handle 5, and the other end is provided with a pressure tube 6, the top of the base 1 is fixedly connected to a through pipe 7, an oil storage tank 10, and a pressure measuring seat 12, the top of the through pipe 7 is connected to a reference pressure gauge 8 through a first thread, the inside of the oil storage tank 10 is connected to a bolt 11 through a second thread, the top of the pressure measuring seat 12 is fixedly connected to a connecting seat 15, the top of the connecting seat 15 is fixedly connected to a mounting pipe 13, and the mounting pipe 13 is fixedly connected to the second thread. The groove is connected to the pressure gauge 14 to be measured, the connection seat 15 is provided with a liquid stop assembly, the installation tube 13 is provided with an oil suction assembly, the pressure pipe 2 is fixedly connected to the base 1 through a plurality of clips 3, the pressure gauge 14 to be measured is located on the inner side of the protective cover 4, the pressure pipe 2, the through pipe 7, the oil storage tank 10, and the pressure measuring seat 12 are all connected through the pressure pipe 6. The outer wall of the connection seat 15 is rotatably connected to the rotating shaft 16 and the transmission gear 17, and the outer wall of the rotating shaft 16 is fixedly sleeved with a pinion. The side wall of the installation tube 13 is rotatably connected to the rotating shaft 19, and the end of the rotating shaft 19 is fixedly sleeved with a speed regulating gear 18. The pinion and the transmission gear 17, the transmission gear 17 and the speed regulating gear 18 are all meshed.

[0025] The oil suction assembly includes a drum 20 fixedly sleeved on the rotating shaft 19, the outer wall of the drum 20 is fixedly connected with a circular spring piece 21, the end of the circular spring piece 21 is fixedly connected with a hollow shaft 22, the outer wall of the hollow shaft 22 is fixedly sleeved with oil-absorbing cotton 24, the inner wall of the mounting tube 13 is fixedly connected with an extrusion sleeve 23, a plurality of oil holes 25 are opened inside the hollow shaft 22, and the hollow shaft 22 and the extrusion sleeve 23 are squeezed against the oil-absorbing cotton 24; the liquid-stop assembly includes a threaded rod 26 arranged on the inner side of the rotating shaft 16, the end of the threaded rod 26 is fixedly connected with a square rod 27, the end of the square rod 27 is fixedly connected with a sealing plate 29, the side wall of the sealing plate 29 is fixedly connected with a sealing gasket 30, the inner side wall of the connecting seat 15 is fixedly connected with a bracket 28, the threaded rod 26 is connected to the rotating shaft 16 through a third thread, and the square rod 27 penetrates the bracket 28 and is slidably arranged with the bracket 28;

[0026] The working principle of the pressure gauge calibration device with a protective structure is as follows: the hydraulic oil in the pressure pipe 2 is pressurized by rotating the handle 5, and the hydraulic oil enters the reference pressure gauge 8 and the pressure gauge to be tested 14 through the pressure pipe 6. By comparing the values of the reference pressure gauge 8 and the pressure gauge to be tested 14, it is detected whether the pressure gauge to be tested 14 is qualified, and the pressurized state is maintained. By rotating the rotary shaft 16, the rotary shaft 16 drives the threaded rod 26 and the square rod 27 to move through the third thread, blocking the oil circuit, so that the pressure gauge to be tested 14 is kept in the pressurized state for a period of time, and the sealing effect of the pressure gauge to be tested 14 is checked. By rotating the handle 5, the pressure in the pressure pipe 6 is released. After the sealing effect inspection of the pressure gauge to be tested 14 is completed, the pressure in the pressure gauge to be tested 14 is released by rotating the rotary shaft 16, and the hydraulic oil flows back through the oil hole 25 on the hollow shaft 22, completing the pressure gauge detection process;

[0027] When the rotating shaft 16 rotates to release the pressure, the rotating shaft 19 and the rotating drum 20 are also driven to rotate through the transmission gear 17 and the speed regulating gear 18. The rotating drum 20 pushes the hollow shaft 22 upward through the circular spring piece 21, driving the squeezed oil-absorbing cotton 24 to move upward. The squeezed oil-absorbing cotton 24 loses the squeezing force and rebounds into a fluffy state, entering the interior of the pressure gauge 14 to be tested, absorbing and cleaning the hydraulic oil remaining on the inner wall of the pressure gauge 14 to be tested, reducing the hydraulic oil inside the pressure gauge 14 to be tested, preventing the hydraulic oil from dripping, and keeping the working environment clean.

[0028] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Those skilled in the art will readily appreciate that the present invention is susceptible to various modifications and variations. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.

Claims

1. A pressure gauge calibration device with a protective structure, comprising a base (1) and a pressurized tube (2), characterized in that: The top of the base (1) is fixedly connected to a plurality of stands (9), the top of the stands (9) is fixedly connected to a protective cover (4), the top of the base (1) is fixedly connected to a plurality of clips (3), one end of the pressurized tube (2) is provided with a handle (5), and the other end is provided with a pressure tube (6), the top of the base (1) is fixedly connected to a through pipe (7), an oil storage tank (10), and a pressure measuring seat (12), the top of the through pipe (7) is connected to a reference pressure gauge (8) through a first thread, the inside of the oil storage tank (10) is connected to a bolt (11) through a second thread, the top of the pressure measuring seat (12) is fixedly connected to a connecting seat (15), the top of the connecting seat (15) is fixedly connected to a mounting tube (13), the mounting tube (13) is connected to a pressure gauge to be measured (14) through a second thread, a liquid stop assembly is provided inside the connecting seat (15), and an oil suction assembly is provided inside the mounting tube (13).

2. A pressure gauge calibration device with a protective structure according to claim 1, characterized in that: The pressurized pipe (2) is fixedly connected to the base (1) through a plurality of clamping strips (3); the pressure gauge (14) to be measured is located on the inner side of the protective cover (4); and the pressurized pipe (2), the through pipe (7), the oil storage tank (10), and the pressure measuring seat (12) are all connected through the pressure pipe (6).

3. The pressure gauge calibration device with a protective structure according to claim 1, characterized in that: The outer wall of the connecting seat (15) is rotatably connected to a rotating shaft (16) and a transmission gear (17), the outer wall of the rotating shaft (16) is fixedly sleeved with a pinion, the side wall of the mounting tube (13) is rotatably connected to a rotating shaft (19), the end of the rotating shaft (19) is fixedly sleeved with a speed regulating gear (18), and the pinion and the transmission gear (17), as well as the transmission gear (17) and the speed regulating gear (18) are all meshed.

4. A pressure gauge calibration device with a protective structure according to claim 3, characterized in that: The oil suction assembly comprises a drum (20) fixedly sleeved on a rotating shaft (19); a circular spring piece (21) is fixedly connected to the outer wall of the drum (20); an end of the circular spring piece (21) is fixedly connected to a hollow shaft (22); an oil-absorbing cotton (24) is fixedly sleeved on the outer wall of the hollow shaft (22); and an extrusion sleeve (23) is fixedly connected to the inner wall of the mounting tube (13).

5. The pressure gauge calibration device with a protective structure according to claim 4, characterized in that: A plurality of oil holes (25) are provided inside the hollow shaft (22), and the hollow shaft (22) and the extrusion sleeve (23) are arranged to squeeze the oil-absorbing cotton (24).

6. The pressure gauge calibration device with a protective structure according to claim 3, characterized in that: The liquid-stop assembly comprises a threaded rod (26) arranged on the inner side of the rotating shaft (16), the end of the threaded rod (26) is fixedly connected to a square rod (27), the end of the square rod (27) is fixedly connected to a sealing plate (29), the side wall of the sealing plate (29) is fixedly connected to a sealing gasket (30), and the inner side wall of the connecting seat (15) is fixedly connected to a bracket (28).

7. The pressure gauge calibration device with a protective structure according to claim 6, characterized in that: The threaded rod (26) is connected to the rotary shaft (16) via a third thread, and the square rod (27) penetrates the bracket (28) and is slidably arranged with the bracket (28).

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