A user-friendly pressure gauge calibration device

Abstract

The utility model relates to the technical field of pressure gauge calibration, and in particular to an easy-to-use pressure gauge calibration device, comprising a workbench and a vertical plate, the upper surface of the workbench is fixedly connected with the vertical plate, the right side of the vertical plate is provided with an extrusion mechanism, the upper surface of the workbench is fixedly connected with an air pump by bolts, the air pump is fixedly connected to one end of a first pipeline, and the other end of the first pipeline is provided with a quick connection mechanism. The worm drives the worm gear to rotate, the worm gear drives the threaded barrel to rotate, the threaded barrel drives the screw to move, the height of the screw in the vertical direction changes when it moves, the screw drives the pressure plate to move, the pressure plate is pressed on the pressure gauge, the gas in the air pump enters the interior of the mounting hole through the first pipeline, the second pipeline, the connecting box and the connecting pipe, and the pressure gauge is calibrated. During the calibration, the pressure gauge is squeezed by the pressure plate, and the pressure gauge will not be separated from the mounting hole during the process of introducing gas, thereby facilitating the calibration of the pressure gauge.

Description

Technical Field

[0001] The utility model relates to the technical field of pressure gauge calibration, in particular to a pressure gauge calibration device which is easy to use. Background Art

[0002] A pressure gauge uses an elastic element as a sensitive element. When the pressure gauge is used, it needs to be calibrated so that its measurement error can be determined, thereby ensuring the accuracy and reliability of the pressure gauge's measurement results.

[0003] For example, a pressure gauge calibration device with patent number CN220508316U has a connecting tube symmetrically arranged on the upper surface of the connecting box, and a calibration plate is connected to the upper end of the connecting tube. A mounting hole is provided on the upper surface of the calibration plate, and a protective plate is slidably installed on the outside of the calibration plate; a mounting groove is provided on the front surface of the workbench, and a placement plate is slidably installed inside the mounting groove. The above document still has deficiencies. When in use, the protective plate slides on the outside of the calibration plate, that is, the sliding rod arranged on the inner side of the protective plate slides inside the sliding groove, and then the mounting hole opened on the calibration plate can be blocked by the protective plate. Protection, and the opposite magnetic poles of the first magnetic block and the second magnetic block attract each other, so that the protective plate can be stabilized to prevent the entry of external dust and affect the subsequent calibration of the pressure gauge. However, when the pressure gauge calibration device in the above document is installed in the mounting hole for calibration, gas is introduced from the bottom of the pressure gauge. The pressure gauge is easily separated from the mounting hole during the process of introducing gas, which makes it inconvenient to calibrate the pressure gauge. At the same time, the pipeline of the air pump in the above document is connected to the pipeline of the connecting box only through a sealing sleeve. When gas passes through the pipeline, it is easy to cause the pipelines on both sides to separate, and the connection effect of the pipeline is poor. Summary of the invention

[0004] The utility model aims to solve the problem that the pressure gauge is easily separated from the mounting hole during the process of passing gas, and proposes a convenient-to-use pressure gauge calibration device.

[0005] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0006] A convenient pressure gauge calibration device is designed, comprising a workbench and a vertical plate, wherein the upper surface of the workbench is fixedly connected to the vertical plate, a squeezing mechanism is arranged on the right side of the vertical plate, an air pump is fixedly connected to the upper surface of the workbench by bolts, the air pump is fixedly connected to one end of a first pipeline, a quick connection mechanism is arranged on the other end of the first pipeline, a connecting box is fixedly connected to the upper surface of the workbench, and a second pipeline is fixedly connected to the right side of the connecting box.

[0007] Preferably, the extrusion mechanism includes a bracket, the outer wall of the bracket is fixedly connected to the vertical plate, the interior of the bracket is rotatably connected to a worm and a threaded barrel through a bearing, the worm is meshingly connected to a worm wheel, the worm wheel is fixed to the outer wall of the threaded barrel, the internal thread of the threaded barrel is connected to a screw, and the lower end of the screw is fixed to a pressure plate.

[0008] Preferably, the quick-connect mechanism includes a first connecting head, which is fixedly connected to the other end of the first pipe, the outer wall of the first connecting head is loosely matched with the second connecting head, the outer wall of the second connecting head is sleeved with a first spring, one end of the first spring is fixedly connected to the second connecting head, the other end of the first spring is fixedly connected to a wedge block, the wedge block is fixedly connected to the inner wall of the cylinder, the cylinder is slidingly connected to the outer wall of the second connecting head, the outer wall of the wedge block is fitted with a locking rod, the outer wall of the locking rod is slidingly connected to the second connecting head, the outer wall of the end of the locking rod is clamped with a slot provided in the first connecting head, the outer wall of the locking rod is sleeved with a second spring, the two ends of the second spring are fixedly connected to the second connecting head and the locking rod respectively, and the second connecting head is fixedly connected to the end of the second pipe.

[0009] Preferably, a plurality of connecting tubes are fixedly connected to the upper surface of the connecting box, and a calibration plate is fixedly connected to the upper ends of the plurality of connecting tubes.

[0010] Preferably, a plurality of mounting holes are provided inside the calibration plate, and pressure gauges are installed inside the mounting holes.

[0011] Preferably, a box body is fitted in the internal gap of the workbench.

[0012] The utility model proposes an easy-to-use pressure gauge calibration device, which has the beneficial effects of: through the cooperation between the bracket, the worm, the worm wheel, the threaded barrel, the screw and the pressure plate, the worm drives the worm wheel to rotate, the worm wheel drives the threaded barrel to rotate, the threaded barrel drives the screw to move, the height of the screw in the vertical direction changes when it moves, the screw drives the pressure plate to move, the pressure plate is pressed on the pressure gauge, the gas in the air pump enters the interior of the mounting hole through the first pipeline, the second pipeline, the connecting box and the connecting pipe, and the pressure gauge is calibrated. When the pressure gauge is calibrated, the pressure plate and the pressure gauge are squeezed, and the pressure gauge will not be separated from the mounting hole during the process of introducing gas, thereby facilitating the calibration of the pressure gauge.

[0013] Through the cooperation among the first connecting head, the second connecting head, the first spring, the wedge block, the cylinder, the locking rod and the second spring, the first connecting head is inserted into the interior of the second connecting head, and the cylinder is loosened. The first spring drives the wedge block to move in the opposite direction under the elastic action, and the wedge block contacts the locking rod and drives the locking rod to slide in the opposite direction. The end of the locking rod is inserted into the slot provided in the first connecting head to clamp and fix the first connecting head in the interior of the second connecting head. The first connecting head and the second connecting head are connected completely, thereby realizing the connection between the first pipeline and the second pipeline. The first pipeline and the second pipeline are connected by clamping. When gas passes through the pipeline, it is not easy to cause the pipelines on both sides to separate, and the connection effect of the pipelines is better. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a structural schematic diagram of the utility model;

[0015] Figure 2 It is a structural sectional view of the utility model;

[0016] Figure 3 It is a structural schematic diagram of the connection between the workbench, the air pump and the first pipeline in the utility model;

[0017] Figure 4 It is a structural schematic diagram of the connection between the worm, worm wheel and screw in the utility model;

[0018] Figure 5 It is a structural schematic diagram of the connection between the connecting box, the connecting pipe and the inspection plate in the utility model;

[0019] Figure 6 It is a schematic structural diagram of the connection between the first spring, the locking rod and the second spring in the utility model.

[0020] In the figure: 1. workbench, 2. vertical plate, 3. quick connection mechanism, 301. first connecting head, 302. second connecting head, 303. first spring, 304. wedge block, 305. cylinder, 306. locking rod, 307. second spring, 4. extrusion mechanism, 401. bracket, 402. worm, 403. worm gear, 404. threaded cylinder, 405. screw, 406. pressure plate, 4a1. slider, 5. air pump, 6. first pipeline, 7. connecting box, 8. second pipeline, 9. connecting pipe, 10. calibration plate, 11. mounting hole, 12. pressure gauge, 13. box body. DETAILED DESCRIPTION

[0021] The utility model is further described below in conjunction with the accompanying drawings: Example

[0022] See attached Figure 1-6: In this embodiment, a convenient pressure gauge calibration device includes a workbench 1 and a vertical plate 2. The upper surface of the workbench 1 is fixedly connected to the vertical plate 2. A squeezing mechanism 4 is arranged on the right side of the vertical plate 2. The squeezing mechanism 4 squeezes the pressure gauge 12. An air pump 5 is fixedly connected to the upper surface of the workbench 1 by bolts. The air pump 5 is fixedly connected to one end of a first pipe 6. The air pump 5 is connected to the first pipe 6. A control valve is arranged on the outer wall of the first pipe 6. A quick connection mechanism 3 is arranged on the other end of the first pipe 6. The quick connection mechanism 3 realizes the connection between the first pipe 6 and the second pipe 8. Both the first pipe 6 and the second pipe 8 are rubber hoses.

[0023] A connecting box 7 is fixedly connected to the upper surface of the workbench 1, a second pipe 8 is fixedly connected to the right side of the connecting box 7, the connecting box 7 is connected to the second pipe 8, a plurality of connecting tubes 9 are fixedly connected to the upper surface of the connecting box 7, the connecting box 7 is connected to the plurality of connecting tubes 9, the connecting tubes 9 are connected to the inside of the mounting hole 11, a calibration plate 10 is fixedly connected to the upper ends of the plurality of connecting tubes 9, a pressure gauge 12 is installed in the mounting hole 11 provided in the calibration plate 10 for calibration, a plurality of mounting holes 11 are provided inside the calibration plate 10, a pressure gauge 12 is installed inside the mounting hole 11, the pressure gauge 12 is the pressure gauge that needs to be calibrated, the internal clearance of the workbench 1 is matched with a box body 13, the inside of the box body 13 is convenient for placing various tools that need to be used.

[0024] The extrusion mechanism 4 includes a bracket 401, a worm 402, a worm wheel 403, a threaded barrel 404, a screw 405 and a pressing plate 406. The outer wall of the bracket 401 is fixedly connected to the vertical plate 2. The inside of the bracket 401 is rotatably connected to the worm 402 and the threaded barrel 404 through a bearing. The end of the worm 402 is fixedly connected to a rotating wheel for facilitating its rotation. The worm 402 is meshed and connected with the worm wheel 403. The worm 402 drives the worm wheel 403 to rotate. The worm wheel 403 is fixed to the outer wall of the threaded barrel 404. The worm wheel 403 drives the threaded barrel 404 to rotate. The internal thread of the threaded barrel 404 is connected with the screw 405. The threaded barrel 404 drives the screw 405 to move. The lower end of the screw 405 is fixedly connected to the pressing plate 406. The screw 405 drives the pressing plate 406 to move. The pressing plate 406 is transparent so that the pressure gauge 12 can be observed.

[0025] The worm 402 drives the worm wheel 403 to rotate, the worm wheel 403 drives the threaded barrel 404 to rotate, the threaded barrel 404 drives the screw 405 to move, the height of the screw 405 in the vertical direction changes when moving, the screw 405 drives the pressure plate 406 to move, the pressure plate 406 presses on the pressure gauge 12, the gas in the air pump 5 enters the interior of the mounting hole 11 through the first pipeline 6, the second pipeline 8, the connecting box 7 and the connecting pipe 9, and the pressure gauge 12 is calibrated. When the pressure gauge 12 is calibrated, the pressure plate 406 and the pressure gauge 12 are squeezed, and the pressure gauge 12 will not be separated from the mounting hole during the process of passing gas, thereby facilitating the calibration of the pressure gauge 12.

[0026] The quick-connect mechanism 3 includes a first connector 301, a second connector 302, a first spring 303, a wedge block 304, a cylinder 305, a locking rod 306 and a second spring 307. The first connector 301 is fixedly connected to the other end of the first pipe 6, the first connector 301 is communicated with the first pipe 6, the outer wall of the first connector 301 and the second connector 302 are clearance-matched, a rubber sealing ring is provided at the connection between the first connector 301 and the second connector 302, the outer wall of the second connector 302 is sleeved with the first spring 303, one end of the first spring 303 is fixedly connected to the second connector 302, the other end of the first spring 303 is fixedly connected to the wedge block 304, the first spring 303 can drive the wedge block 304 to move under the action of elasticity, the wedge block 304 is fixedly connected to the inner wall of the cylinder 305, and the wedge block 304 drives the cylinder 305 to move;

[0027] The cylinder 305 is slidably connected to the outer wall of the second connecting head 302, the outer wall of the wedge block 304 is fitted with the locking rod 306, the wedge block 304 drives the locking rod 306 to slide, the outer wall of the locking rod 306 is slidably connected to the second connecting head 302, the locking rod 306 slides inside the second connecting head 302, the outer wall of the locking rod 306 end is snapped with the slot provided in the first connecting head 301, the locking rod 306 is snapped with the slot provided in the first connecting head 301 to snap and fix the first connecting head 301 inside the second connecting head 302, the outer wall of the locking rod 306 is sleeved with a second spring 307, the two ends of the second spring 307 are respectively fixedly connected to the second connecting head 302 and the locking rod 306, the second spring 307 can drive the locking rod 306 to move under the action of elasticity, the second connecting head 302 is fixedly connected to the end of the second pipe 8, the second connecting head 302 is connected to the second pipe 8, the model of the spring is selected according to the actual use requirements, and it can meet the work needs;

[0028] Insert the first connector 301 into the second connector 302, loosen the cylinder 305, and the first spring 303 drives the wedge block 304 to move in the opposite direction under the elastic action. The wedge block 304 contacts the locking rod 306 and drives the locking rod 306 to slide in the opposite direction. The end of the locking rod 306 is inserted into the slot provided in the first connector 301 to clamp and fix the first connector 301 in the second connector 302. The first connector 301 and the second connector 302 are connected completely, thereby realizing the connection between the first pipe 6 and the second pipe 8. The first pipe 6 and the second pipe 8 are connected by clamping. When gas passes through the pipes, it is not easy to cause the pipes on both sides to separate, and the connection effect of the pipes is better.

[0029] Working principle:

[0030] When the pressure gauge 12 is calibrated using a convenient pressure gauge calibration device;

[0031] The first pipeline is connected to the second pipeline at the following stage:

[0032] The cylinder 305 is held and slid to the left, and the cylinder 305 drives the wedge block 304 to move. The wedge block 304 squeezes the first spring 303. At the same time, the wedge block 304 separates from the locking rod 306 and no longer squeezes the locking rod 306. The second spring 307 drives the locking rod 306 to slide outward under the elastic action, and the first connector 301 is inserted into the second connector 302. The cylinder 305 is released, and the first spring 303 drives the wedge block 304 to move in the opposite direction under the elastic action. The wedge block 30 4 contacts the locking rod 306 and drives the locking rod 306 to slide in the opposite direction. The end of the locking rod 306 is inserted into the card slot set in the first connector 301 to clamp and fix the first connector 301 inside the second connector 302. The first connector 301 and the second connector 302 are connected, thereby realizing the connection between the first pipe 6 and the second pipe 8. When gas passes through the pipes, it is not easy to cause the pipes on both sides to separate, and the pipe connection effect is better.

[0033] Pressure gauge verification stage:

[0034] The pressure gauges to be calibrated are installed in sequence inside the mounting holes 11 set in the calibration plate 10, and the worm 402 is rotated. The worm 402 drives the worm wheel 403 to rotate, and the worm wheel 403 drives the threaded barrel 404 to rotate. The threaded barrel 404 drives the screw 405 to move. The height of the screw 405 in the vertical direction changes during movement. The screw 405 drives the pressure plate 406 to move, and the pressure plate 406 presses on the pressure gauge 12. The gas in the air pump 5 enters the mounting hole 11 through the first pipeline 6, the second pipeline 8, the connecting box 7 and the connecting pipe 9, and the pressure gauge 12 is calibrated (the specific calibration result judgment method is the same as that in a pressure gauge calibration device with patent number CN220508316U). During the calibration of the pressure gauge 12, the pressure plate 406 and the pressure gauge 12 are squeezed, and the pressure gauge 12 will not be separated from the mounting hole during the gas introduction process, thereby facilitating the calibration of the pressure gauge 12. Example

[0035] See attached Figure 1-6 : In this embodiment, a pressure gauge calibration device that is easy to use, the extrusion mechanism 4 also includes a slider 4a1, the slider 4a1 is fixedly connected to the pressure plate 406 through a cross bar, the pressure plate 406 drives the slider 4a1 to move through the cross bar, the outer wall of the slider 4a1 is slidably connected to the vertical plate 2, and the slider 4a1 slides inside the vertical plate 2;

[0036] Through the action of the slider 4a1 , the pressing plate 406 drives the slider 4a1 to move when it moves. The slider 4a1 slides inside the vertical plate 2 , and the slider 4a1 guides the movement of the pressing plate 406 .

[0037] Working principle:

[0038] When the pressing plate 406 moves, it drives the sliding block 4a1 to move. The sliding block 4a1 slides inside the vertical plate 2 . The sliding block 4a1 guides the movement of the pressing plate 406 .

[0039] Although the present invention has been shown and described with reference to the preferred embodiments, it will be understood by those skilled in the art that various changes in form and details may be made therein within the scope of the claims.

Claims

1. A convenient pressure gauge calibration device, comprising a workbench (1) and a vertical plate (2), wherein the vertical plate (2) is fixedly connected to the upper surface of the workbench (1), characterized in that: An extrusion mechanism (4) is provided on the right side of the vertical plate (2); an air pump (5) is fixedly connected to the upper surface of the workbench (1) by means of bolts; the air pump (5) is fixedly connected to one end of a first pipe (6); a quick-connect mechanism (3) is provided at the other end of the first pipe (6); a connecting box (7) is fixedly connected to the upper surface of the workbench (1); and a second pipe (8) is fixedly connected to the right side of the connecting box (7).

2. A convenient pressure gauge calibration device according to claim 1, characterized in that: The extrusion mechanism (4) comprises a bracket (401), the outer wall of the bracket (401) is fixedly connected to the vertical plate (2), the interior of the bracket (401) is rotatably connected to a worm (402) and a threaded barrel (404) via a bearing, the worm (402) is meshingly connected to a worm wheel (403), the worm wheel (403) is fixedly connected to the outer wall of the threaded barrel (404), the interior of the threaded barrel (404) is threadedly connected to a screw (405), and the lower end of the screw (405) is fixedly connected to a pressing plate (406).

3. The easy-to-use pressure gauge calibration device according to claim 1 is characterized in that: The quick-connect mechanism (3) comprises a first connector (301), the first connector (301) being fixedly connected to the other end of the first pipe (6), the outer wall of the first connector (301) being loosely matched with the second connector (302), the outer wall of the second connector (302) being sleeved with a first spring (303), one end of the first spring (303) being fixedly connected to the second connector (302), the other end of the first spring (303) being fixedly connected to a wedge block (304), the wedge block (304) being fixedly connected to the inner wall of a cylinder (305), the cylinder (305) ) is slidably connected to the outer wall of the second connector (302), the outer wall of the wedge block (304) is in contact with the locking rod (306), the outer wall of the locking rod (306) is slidably connected to the second connector (302), the outer wall of the end of the locking rod (306) is snap-fitted with a slot provided in the first connector (301), the outer wall of the locking rod (306) is sleeved with a second spring (307), the two ends of the second spring (307) are fixedly connected to the second connector (302) and the locking rod (306) respectively, and the second connector (302) is fixedly connected to the end of the second pipe (8).

4. The easy-to-use pressure gauge calibration device according to claim 1 is characterized in that: A plurality of connecting tubes (9) are fixedly connected to the upper surface of the connecting box (7), and a calibration plate (10) is fixedly connected to the upper ends of the plurality of connecting tubes (9).

5. The easy-to-use pressure gauge calibration device according to claim 4 is characterized in that: A plurality of mounting holes (11) are provided inside the calibration plate (10), and a pressure gauge (12) is installed inside the mounting hole (11).

6. The easy-to-use pressure gauge calibration device according to claim 1 is characterized in that: The internal gap of the workbench (1) is fitted with a box body (13).

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