Pressure metering calibrator

Abstract

The utility model discloses a pressure metering calibrator, which relates to the technical field of pressure calibration and comprises a working table, an air pump is fixedly mounted at the top of the working table, an air pipe is fixedly mounted at the output end of the air pump, a plurality of calibration ports are fixedly mounted at the top of the air pipe, and connecting ports are fixedly mounted at the tops of the calibration ports. The pressure gauge calibration device has the advantages that pressure gauges of different models and sizes can be calibrated and used, the pressure gauges only need to be placed on the lower arc-shaped supporting plate to be supported during calibration, the pressure gauges are placed on the upper arc-shaped supporting plate, and the pressure gauges can be calibrated. And then the threaded rod is driven to rotate by rotating the handle rotating disc, and then the threaded rod moves downwards through threads and drives the upper arc-shaped pressing plate to move downwards, so that the pressure gauge can be pressed downwards through the upper arc-shaped pressing plate to enable the connector at the bottom of the pressure gauge to abut against the rubber sealing gasket for sealing, then calibration can be conducted, use is convenient and fast, and the practicability is high. And pressure gauges with different models and sizes can be calibrated.

Description

Technical Field

[0001] The utility model relates to the technical field of pressure calibration, in particular to a pressure measurement calibrator. Background Technique

[0002] A pressure gauge refers to an instrument that uses an elastic element as a sensitive element to measure and indicate the pressure higher than the ambient pressure. It is widely used and almost covers all industrial processes and scientific research fields. Before use, a pressure gauge needs to be calibrated with a calibrator.

[0003] Currently, the existing pressure measurement calibrators can only calibrate a single model of pressure gauge when calibrating a pressure gauge. The joint sizes of different models of pressure gauges are different. Therefore, different calibrators need to be replaced for calibration and used in combination, resulting in poor compatibility. For this reason, we have proposed a pressure measurement calibrator. Content of the Utility Model

[0004] Aiming at the deficiencies of the prior art, the utility model provides a pressure measurement calibrator, which solves the problems raised in the above background technique.

[0005] To achieve the above purposes, the utility model is realized through the following technical solutions: A pressure measurement calibrator, including a workbench, a gas pump is fixedly installed on the top of the workbench, an air pipe is fixedly installed at the output end of the gas pump, several calibration ports are fixedly installed at the top of the air pipe, a connection port is fixedly installed at the top of the calibration port, several L-shaped frames are fixedly installed on the top of the workbench and on one side of the air pipe, a threaded rod is installed inside the top of the L-shaped frame in a threaded manner, an upper arc-shaped pressing plate is rotatably installed at one end of the threaded rod, both sides of the upper arc-shaped pressing plate are fixedly installed with, which is slidably connected with the L-shaped frame, a grip turntable is fixedly installed at the other end of the threaded rod, two guide grooves are opened inside the connection port, a guide rod is slidably installed inside the guide groove, a lower arc-shaped supporting plate is fixedly installed at one end of the guide rod, a side groove is opened inside the lower arc-shaped supporting plate, a sliding plate is fixedly installed at the other end of the guide rod, and a first spring is installed inside the guide groove.

[0006] Preferably, a valve cavity is opened inside the connection port, the valve cavity communicates with the inside of the calibration port, a slot is opened inside the connection port and above the valve cavity, two mounting rods are slidably installed inside the connection port and above the valve cavity, a valve plate is fixedly installed at one end of the mounting rod, a first air hole is opened in the middle of the connection port and above the valve cavity, the valve plate cooperates with the first air hole, a piston plate is fixedly installed at the other end of the mounting rod, a second spring is installed on the outer side of the mounting rod, a rubber sealing pad is fixedly installed at the top of the piston plate, and a second air hole is opened in the middle of the piston plate and the rubber sealing pad.

[0007] Preferably, a pressure device is placed on the top of the lower arc-shaped support plate. A joint is provided at the bottom of the pressure device. The side groove is matched with the joint, and the joint is matched with the slot and the rubber gasket.

[0008] Preferably, a gas flow control valve is arranged inside the air pipe.

[0009] Preferably, a pressure display is arranged on one side of the calibration port.

[0010] Preferably, holes matched with the threaded rod are respectively formed in the inner part of the top of the L-shaped frame.

[0011] The utility model provides a pressure measurement calibrator, which has the following beneficial effects:

[0012] 1. For this pressure measurement calibrator, through the cooperation of the L-shaped frame, threaded rod, upper arc-shaped pressing plate, grip turntable, guide groove, guide rod, lower arc-shaped support plate, side groove, sliding plate and first spring, during use, pressure devices of different models and sizes can be calibrated. When calibrating, only need to place the pressure device on the lower arc-shaped support plate to hold it, and then rotate the grip turntable to drive the threaded rod to rotate, and then it can move downward through the thread and drive the upper arc-shaped pressing plate to move downward. Thus, the pressure device can be tightly pressed downward by the upper arc-shaped pressing plate so that the joint at its bottom abuts tightly against the rubber gasket for sealing. Then calibration can be carried out. It is convenient and fast to use, and pressure devices of different models and sizes can be calibrated. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 is a schematic structural diagram of the utility model;

[0014] Figure 2 is a partial cross-sectional view of the utility model;

[0015] Figure 3 is the utility model Figure 2 The enlarged view at A in.

[0016] In the figure: 1, workbench; 2, air pump; 3, air pipe; 4, calibration port; 5, connection port; 6, L-shaped frame; 7, threaded rod; 8, upper arc-shaped pressing plate; 9, guide rod; 10, grip turntable; 11, guide groove; 12, guide rod; 13, lower arc-shaped support plate; 14, side groove; 15, sliding plate; 16, first spring; 17, valve cavity; 18, mounting rod; 19, valve plate; 20, first air hole; 21, piston plate; 22, second spring; 23, rubber gasket; 24, second air hole; 25, pressure device; 26, joint; 27, gas flow control valve; 28, pressure display. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0017] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments.

[0018] Please refer to Figures 1 to 3 , the present invention provides a technical solution: a pressure measurement calibrator, including a workbench 1, an air pump 2 is fixedly installed on the top of the workbench 1, an air pipe 3 is fixedly installed at the output end of the air pump 2, several calibration ports 4 are fixedly installed at the top of the air pipe 3, a connection port 5 is fixedly installed at the top of the calibration port 4, and several L-shaped frames 6 are fixedly installed on the top of the workbench 1 and on one side of the air pipe 3. A threaded rod 7 is threadedly installed inside the top of the L-shaped frame 6. One end of the threaded rod 7 is rotatably installed with an upper arc-shaped pressing plate 8. Both sides of the upper arc-shaped pressing plate 8 are fixedly installed with 9. Holes matching the threaded rod 7 and 9 are respectively opened inside the top of the L-shaped frame 6. 9 is slidably connected to the L-shaped frame 6. The other end of the threaded rod 7 is fixedly installed with a grip turntable 10. Two guide grooves 11 are opened inside the connection port 5. A guide rod 12 is slidably installed inside the guide groove 11. One end of the guide rod 12 is fixedly installed with a lower arc-shaped support plate 13. A side groove 14 is opened inside the lower arc-shaped support plate 13. The other end of the guide rod 12 is fixedly installed with a sliding plate 15. A first spring 16 is installed inside the guide groove 11.

[0019] A valve cavity 17 is opened inside the connection port 5. The valve cavity 17 communicates with the inside of the calibration port 4. A slot is opened inside the connection port 5 and above the valve cavity 17. Two mounting rods 18 are slidably installed inside the connection port 5 and above the valve cavity 17. One end of the mounting rod 18 is fixedly installed with a valve plate 19. A first air hole 20 is opened in the middle of the connection port 5 and above the valve cavity 17. The valve plate 19 cooperates with the first air hole 20. The other end of the mounting rod 18 is fixedly installed with a piston plate 21. A second spring 22 is installed on the outer side of the mounting rod 18. A rubber sealing pad 23 is fixedly installed on the top of the piston plate 21. A second air hole 24 is opened in the middle of the piston plate 21 and the rubber sealing pad 23. Among them, the valve cavity 17, the slot, the valve plate 19, the first air hole 20, the piston plate 21, the second spring 22, the rubber sealing pad 23, the second air hole 24 and the pressure device 25 cooperate. During the use process, after the pressure device 25 is pressed and fixed by the upper arc-shaped pressing plate 8 and the adapter 26 contacts and presses tightly against the rubber sealing pad 23 for sealing, the piston plate 21 is pushed to move downward, and at the same time, the mounting rod 18 and the valve plate 19 are driven to move downward, and then the first air hole 20 and the second air hole 24 can be communicated, so that the pressure enters the adapter 26, and calibration can be carried out.

[0020] A pressure device 25 is placed on the top of the lower arc-shaped support plate 13. A connector 26 is provided at the bottom of the pressure device 25. The side groove 14 is matched with the connector 26. The connector 26 is matched with the slot and the rubber gasket 23. A gas flow control valve 27 is arranged inside the air pipe 3. A pressure display 28 is arranged on one side of the calibration port 4. During calibration, by comparing the readings of the pressure display 28 and the pressure device 25 to be detected, the pressure calibration can be achieved.

[0021] In summary, for this pressure measurement and calibration device, during use, the air pump 2 is turned on to increase the pressure in the air pipe 3. The gas flow control valve 27 is used to control the air flow rate entering the air pipe 3. Then, the pressure device 25 to be detected is placed on the lower arc-shaped support plate 13 to hold it. Subsequently, by rotating the grip turntable 10, the threaded rod 7 is driven to rotate, and then it can move downward through the thread, driving the upper arc-shaped pressing plate 8 to move downward at the same time. Thus, the pressure device 25 can be pressed and fixed by the upper arc-shaped pressing plate 8. After the connector 26 contacts and presses tightly against the rubber gasket 23 for sealing, the piston plate 21 is pushed to move downward, driving the mounting rod 18 and the valve plate 19 to move downward successively. Then, the first air hole 20 and the second air hole 24 can be connected, allowing the pressure to enter the connector 26. Finally, by comparing the readings of the pressure display 28 and the pressure device 25 to be detected, the pressure calibration can be achieved.

[0022] The above is only a preferred specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution of the present invention and its inventive concept, makes equivalent substitutions or changes, and all should be covered within the protection scope of the present invention.

Claims

1. A pressure measurement calibrator, comprising a workbench (1), characterized in that: A air pump (2) is fixedly installed on the top of the workbench (1). The output end of the air pump (2) is fixedly installed with an air pipe (3). The top of the air pipe (3) is fixedly installed with a number of calibration ports (4). The top of the calibration port (4) is fixedly installed with a connection port (5). A number of L-shaped frames (6) are fixedly installed on the top of the workbench (1) and on one side of the air pipe (3). A threaded rod (7) is installed inside the top of the L-shaped frame (6). One end of the threaded rod (7) is rotatably installed with an upper arc-shaped pressing plate (8). Both sides of the upper arc-shaped pressing plate (8) are fixedly installed with (9), and the (9) is slidably connected with the L-shaped frame (6). The other end of the threaded rod (7) is fixedly installed with a grip turntable (10). Two guide grooves (11) are opened inside the connection port (5). A guide rod (12) is slidably installed inside the guide groove (11). One end of the guide rod (12) is fixedly installed with a lower arc-shaped supporting plate (13). A side groove (14) is opened inside the lower arc-shaped supporting plate (13). The other end of the guide rod (12) is fixedly installed with a sliding plate (15). A first spring (16) is installed inside the guide groove (11).

2. A pressure measurement calibrator according to claim 1, characterized in that: A valve cavity (17) is opened inside the connection port (5). The valve cavity (17) communicates with the inside of the calibration port (4). A slot is opened inside the connection port (5) and above the valve cavity (17). Two mounting rods (18) are slidably installed inside the connection port (5) and above the valve cavity (17). One end of the mounting rod (18) is fixedly installed with a valve plate (19). A first air hole (20) is opened in the middle above the valve cavity (17) inside the connection port (5). The valve plate (19) cooperates with the first air hole (20). The other end of the mounting rod (18) is fixedly installed with a piston plate (21). A second spring (22) is installed on the outside of the mounting rod (18). A rubber sealing pad (23) is fixedly installed on the top of the piston plate (21). A second air hole (24) is opened in the middle of the piston plate (21) and the rubber sealing pad (23).

3. A pressure measurement calibrator according to claim 1, characterized in that: A pressure device (25) is placed on the top of the lower arc-shaped supporting plate (13). A joint (26) is provided at the bottom of the pressure device (25). The side groove (14) cooperates with the joint (26). The joint (26) cooperates with the slot and the rubber sealing pad (23).

4. A pressure measurement calibrator according to claim 1, characterized in that: A gas flow control valve (27) is provided inside the air pipe (3).

5. A pressure measurement calibrator according to claim 1, characterized in that: A pressure display (28) is provided on one side of the calibration port (4).

6. A pressure measurement calibrator according to claim 1, characterized in that: Holes matching the threaded rod (7) and (9) are respectively opened inside the top of the L-shaped frame (6).

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