Pressure gauge calibration connection fixing device

Abstract

The utility model relates to the technical field of pressure gauge calibration, in particular to a connecting and fixing device for pressure gauge calibration, which not only facilitates the connection of a pressure gauge and calibration equipment and improves the connection rate, but also facilitates the simultaneous calibration of a plurality of groups of pressure gauges and improves the calibration rate. Comprising an inflation mechanism; the device further comprises a calibration mechanism, three sets of fixing mechanisms, six sets of plugging mechanisms and a driving mechanism, the calibration mechanism is installed on the air inflation mechanism to detect air pressure, and the three sets of fixing mechanisms are all installed on the air inflation mechanism and facilitate fixing of the pressure gauge. The six groups of plugging mechanisms are respectively mounted on the three groups of fixing mechanisms and are used for conveniently plugging interfaces without pressure gauges; and the driving mechanisms are mounted on the fixing mechanisms and are used for driving the fixing mechanisms to fix the pressure gauges.

Description

Technical Field

[0001] This utility model relates to the technical field of pressure gauge calibration, and in particular to a pressure gauge calibration connection and fixing device. Background Technology

[0002] A pressure gauge is an instrument that uses an elastic element as its sensing element to measure and indicate pressures higher than ambient pressure. It is widely used and can be found in almost all industrial processes and scientific research fields.

[0003] Existing pressure gauge calibration connection and fixing devices, such as the pressure gauge verification fixing platform disclosed in utility model patent application number 202420331270.X, mainly include an outer frame with a "U"-shaped structure, a U-shaped notch in the middle of its top plate for placing the flange pressure gauge to be tested, a lifter fixedly installed on the inner top surface of the bottom plate of the outer frame, and a sealing disc fixedly connected to the top of the lifter; in use, the flange pressure gauge to be tested is placed into the U-shaped notch with its flange below the bottom surface of the top plate of the outer frame, at which point the lifter is activated to push the sealing disc upward, thereby pressing the flange of the flange pressure gauge to be tested against it under the limiting action of the top plate of the outer frame and sealing it to achieve rapid fixing.

[0004] However, most existing connection and fixing devices require manual installation of pipe clamps to connect the pressure gauges to the calibration equipment, which is very troublesome. Moreover, most existing connection and fixing devices can only calibrate one set of pressure gauges at a time, resulting in low calibration efficiency. Utility Model Content

[0005] To solve the above-mentioned technical problems, this utility model provides a pressure gauge calibration connection and fixing device that not only facilitates the connection between the pressure gauge and the calibration equipment and improves the connection speed, but also facilitates the simultaneous calibration of multiple pressure gauges and improves the calibration speed.

[0006] This utility model discloses a pressure gauge calibration and connection fixing device, including an inflation mechanism; it also includes a calibration mechanism, three sets of fixing mechanisms, six sets of sealing mechanisms, and a drive mechanism. The calibration mechanism is installed on the inflation mechanism to detect air pressure. The three sets of fixing mechanisms are all installed on the inflation mechanism to facilitate the fixing of the pressure gauge. The six sets of sealing mechanisms are respectively installed on the three sets of fixing mechanisms to facilitate the sealing of interfaces where no pressure gauge is installed. The drive mechanism is installed on the fixing mechanisms and drives the fixing mechanisms to fix the pressure gauge. The operator places multiple pressure gauges at the interface of the calibration mechanism, starts the drive mechanism, and the drive mechanism drives the three sets of fixing mechanisms to fix and seal the pressure gauges. The sealing mechanisms are used to seal the interfaces where no pressure gauge is connected. The inflation mechanism inflates the calibration mechanism to facilitate the calibration of the pressure gauge.

[0007] Preferably, the inflation mechanism includes a testing platform, an air pump, an air extraction pipe, and a filter box. The bottom of the testing platform is connected to the ground, the bottom of the air pump is connected to the top of the testing platform, the air extraction pipe is installed on the air pump, and the bottom of the filter box is connected to the top of the testing platform and is in communication with the inside of the air extraction pipe. When the air pump is started, the air pump draws air through the air extraction pipe, the filter box filters the drawn-in air to prevent impurities from entering the calibration mechanism, and the air pump delivers the air into the calibration mechanism.

[0008] Preferably, the calibration mechanism includes a connecting pipe, a check valve, a regulating valve, a connection port, a pressure relief valve, and a calibration pressure gauge. The connecting pipe is installed on the test platform and connected to the air pump. The check valve is installed on the connecting pipe, the regulating valve is installed on the connecting pipe, and all three sets of connection ports are installed on the connecting pipe and connected to its interior. The pressure relief valve is installed on the connecting pipe, and the calibration pressure gauge is installed on the connecting pipe. The pressure gauge to be tested is connected to the connection port, and the air pump delivers air into the connecting pipe. The check valve prevents backflow of gas, and the regulating valve allows for fine-tuning of the pressure inside the connecting pipe. The calibration pressure gauge calibrates the pressure inside the check valve for easy comparison with the pressure gauge to be tested. After calibration, the pressure relief valve is opened to release the pressure inside the connecting pipe.

[0009] Preferably, the fixing mechanism includes a lead screw box, a bidirectional lead screw, sliders, and fixing seats. The bottom end of the lead screw box is connected to the top end of the testing platform. The bidirectional lead screw is rotatably installed inside the lead screw box. Both sets of sliders are slidably installed inside the lead screw box. The two sets of fixing seats are respectively installed on the two sets of sliders. The operator aligns the pressure gauge with the connection port, starts the drive mechanism to drive the bidirectional lead screw to rotate, and the bidirectional lead screw drives the two sets of sliders to move closer, so that the two sets of fixing seats close and fix the pressure gauge, thus sealing the pressure gauge and the connection port.

[0010] Preferably, the mounting base also includes a built-in sealing gasket; by setting the sealing gasket, the connection between the pressure gauge and the connection port is sealed to prevent air leakage.

[0011] Preferably, the sealing mechanism includes multiple sets of springs, a sealing plate, and two sets of guide bars. A guide groove is provided inside the fixed base, and all the springs are installed within the guide groove of the fixed base. The sealing plate is slidably installed within the guide groove of the fixed base, and both sets of guide bars are installed on the sealing plate. The multiple sets of springs push the sealing plate to seal the fixed base and the connection port, preventing air leakage at the connection port. When a pressure gauge is installed on the connection port, the pressure gauge pushes the two sets of sealing plates to compress the multiple sets of springs. The stability of the sliding of the sealing plate is ensured by setting two sets of guide bars.

[0012] Preferably, the drive mechanism includes a motor, a reducer, a transmission shaft, two sets of first pulleys, a first belt, two sets of second pulleys, and a second belt. The bottom end of the motor is connected to the top end of the testing platform, the bottom end of the reducer is connected to the top end of the testing platform, the transmission shaft is connected to a first set of bidirectional lead screws, the two sets of first pulleys are respectively mounted on the transmission shaft and the second set of bidirectional lead screws, the first belt is tensioned between the two sets of first pulleys, the two sets of second pulleys are respectively mounted on the transmission shaft and the third set of bidirectional lead screws, and the second belt is tensioned between the two sets of second pulleys. When the motor is started, the motor drives the transmission shaft to rotate through the reducer, the transmission shaft drives the first set of bidirectional lead screws to rotate, the transmission shaft drives the first and second pulleys connected to it to rotate, the two sets of first pulleys are driven by the first belt, the two sets of second pulleys are driven by the second belt, and thus drive the second and third sets of bidirectional lead screws to rotate.

[0013] Compared with the prior art, the beneficial effects of this utility model are as follows: the staff places multiple pressure gauges at the interface of the calibration mechanism, starts the drive mechanism, the drive mechanism drives three sets of fixing mechanisms to fix and seal the pressure gauges, the sealing mechanism seals the interface of the pressure gauge that is not connected by setting a sealing mechanism, and the inflation mechanism inflates the calibration mechanism with air, which facilitates the calibration of the pressure gauges. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the isometric structure of this utility model;

[0015] Figure 2 This is an isometric structural diagram of the inflation mechanism and calibration mechanism of this utility model;

[0016] Figure 3 This is a partially enlarged cross-sectional isometric structural diagram of the fixing mechanism and the sealing mechanism of this utility model;

[0017] Figure 4 This is a partially enlarged isometric structural diagram of the drive mechanism of this utility model.

[0018] The attached diagram is labeled as follows: 01, inflation mechanism; 11, testing platform; 12, air pump; 13, extraction pipe; 14, filter box; 02, calibration mechanism; 21, connecting pipe; 22, check valve; 23, regulating valve; 24, connection port; 25, pressure relief valve; 26, calibration pressure gauge; 03, fixing mechanism; 31, lead screw box; 32, double-acting lead screw; 33, slider; 34, fixed seat; 04, sealing mechanism; 41, spring; 42, sealing plate; 43, guide bar; 05, drive mechanism; 51, electric motor; 52, reducer; 53, drive shaft; 54, first pulley; 55, first belt; 56, second pulley; 57, second belt. Detailed Implementation

[0019] To facilitate understanding of this utility model, a more complete description will be given below with reference to the accompanying drawings. This utility model can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided to make the disclosure of this utility model more thorough and complete.

[0020] Example 1

[0021] This utility model discloses a pressure gauge calibration and connection fixing device, including an inflation mechanism 01; it also includes a calibration mechanism 02, three sets of fixing mechanisms 03, six sets of sealing mechanisms 04, and a drive mechanism 05. The calibration mechanism 02 is installed on the inflation mechanism 01 to detect air pressure. The three sets of fixing mechanisms 03 are all installed on the inflation mechanism 01 to facilitate fixing the pressure gauge. The six sets of sealing mechanisms 04 are respectively installed on the three sets of fixing mechanisms 03 to facilitate sealing the interface where no pressure gauge is installed. The drive mechanism 05 is installed on the fixing mechanisms 03 and drives the fixing mechanisms 03 to fix the pressure gauge. The inflation mechanism 01 includes a testing platform 11, an air pump 12, an air extraction pipe 13, and a filter box. 14. The bottom end of the testing platform 11 is connected to the ground, the bottom end of the air pump 12 is connected to the top end of the testing platform 11, the suction pipe 13 is installed on the air pump 12, the bottom end of the filter box 14 is connected to the top end of the testing platform 11 and the filter box 14 is internally connected to the suction pipe 13; the calibration mechanism 02 includes a connecting pipe 21, a check valve 22, a regulating valve 23, a connection port 24, a pressure relief valve 25, and a calibration pressure gauge 26. The connecting pipe 21 is installed on the testing platform 11 and connected to the air pump 12. The check valve 22 is installed on the connecting pipe 21, the regulating valve 23 is installed on the connecting pipe 21, and all three sets of connection ports 24 are installed on the connecting pipe 21 and connected to the inside of the connecting pipe 21. The pressure relief valve 25 is installed on the connecting pipe 26. The pressure gauge 26 is mounted on the connecting pipe 21. The fixing mechanism 03 includes a lead screw box 31, a bidirectional lead screw 32, a slider 33, and a fixing seat 34. The bottom end of the lead screw box 31 is connected to the top end of the testing platform 11. The bidirectional lead screw 32 is rotatably mounted inside the lead screw box 31. Both sets of sliders 33 are slidably mounted inside the lead screw box 31. The two sets of fixing seats 34 are respectively mounted on the two sets of sliders 33. The fixing seat 34 also includes a built-in sealing gasket. When it is working, firstly, the operator aligns the pressure gauge with the connection port 24, starts the drive mechanism 05 to drive the bidirectional lead screw 32 to rotate, and the bidirectional lead screw 32 drives the two sets of sliders 33 to move closer, so that the two sets of fixing seats 34 close together. Secure the pressure gauge to ensure a sealed connection between the pressure gauge and the connection port 24. A sealing gasket enhances the seal between the pressure gauge and the connection port 24, preventing air leakage. Start the air pump 12, which draws air through the extraction pipe 13. The filter box 14 filters the drawn-in air to prevent impurities from entering the calibration mechanism 02. The air pump 12 delivers air to the connecting pipe 21. A check valve 22 prevents backflow of gas. The pressure in the connecting pipe 21 can be fine-tuned using the regulating valve 23. The calibration pressure gauge 26 calibrates the pressure in the check valve 22 for comparison with the pressure gauge under test. After calibration, open the pressure relief valve 25 to release the pressure in the connecting pipe 21.

[0022] Example 2

[0023] like Figures 1 to 4As shown, this utility model provides a pressure gauge calibration connection and fixing device, based on embodiment 1. The sealing mechanism 04 includes multiple sets of springs 41, a sealing plate 42, and two sets of guide bars 43. A guide groove is opened in the fixing seat 34, and the multiple sets of springs 41 are all installed in the guide groove of the fixing seat 34. The sealing plate 42 is slidably installed in the guide groove of the fixing seat 34, and the two sets of guide bars 43 are all installed on the sealing plate 42. The driving mechanism 05 includes a motor 51, a reducer 52, a transmission shaft 53, two sets of first pulleys 54, a first belt 55, two sets of second pulleys 56, and a second belt 57. The bottom end of the motor 51 is connected to the top end of the testing platform 11, and the reducer 52... The bottom end is connected to the top end of the testing platform 11. The drive shaft 53 is connected to the first set of double-acting screws 32. Two sets of first pulleys 54 are respectively installed on the drive shaft 53 and the second set of double-acting screws 32. The first belt 55 is tensioned between the two sets of first pulleys 54. Two sets of second pulleys 56 are respectively installed on the drive shaft 53 and the third set of double-acting screws 32. The second belt 57 is tensioned between the two sets of second pulleys 56. When it is working, firstly, the operator aligns the pressure gauge with the connection port 24 and starts the motor 51. The motor 51 drives the drive shaft 53 to rotate through the reducer 52. The drive shaft 53 drives the first set of double-acting screws 32 to rotate. 3 drives the first pulley 54 and the second pulley 56 connected to it to rotate. The two sets of first pulleys 54 are driven by the first belt 55, and the two sets of second pulleys 56 are driven by the second belt 57, which in turn drives the second set of bidirectional lead screws 32 and the third set of bidirectional lead screws 32 to rotate. The bidirectional lead screws 32 drive the two sets of sliders 33 to move closer, so that the two sets of fixed seats 34 close and fix the pressure gauge, so that the pressure gauge and the connection port 24 are sealed. By setting a sealing gasket, the connection between the pressure gauge and the connection port 24 is enhanced to prevent air leakage. Multiple sets of springs 41 push the sealing plate 42 to seal the fixed seat 34 and the connection port 24 to prevent air leakage from the connection port 24. When the connection port 24 is installed When a pressure gauge is installed, the pressure gauge pushes two sets of sealing plates 42 to compress multiple sets of springs 41. Two sets of guide bars 43 are set to ensure the stability of the sliding of the sealing plates 42. The air pump 12 is started, and the air pump 12 draws air through the air extraction pipe 13. The filter box 14 filters the drawn air to prevent impurities from entering the calibration mechanism 02. The air pump 12 delivers air to the connecting pipe 21. The check valve 22 is set to prevent gas backflow. The pressure in the connecting pipe 21 can be finely adjusted by the regulating valve 23. The calibration pressure gauge 26 calibrates the pressure in the check valve 22 for easy comparison with the pressure gauge under test. After calibration, the pressure relief valve 25 is opened to release the pressure in the connecting pipe 21.

[0024] The air pump 12, electric motor 51, and reducer 52 of this utility model are commercially available. Technical personnel in this industry only need to install and operate them according to the accompanying instruction manual, without requiring any creative work from those skilled in the art.

[0025] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of the present utility model, and these improvements and modifications should also be considered within the protection scope of the present utility model.

Claims

1. A pressure gauge calibration connection fixing device comprising an inflation mechanism (01); characterized by, It also includes a calibration mechanism (02), three sets of fixing mechanisms (03), six sets of sealing mechanisms (04) and a drive mechanism (05). The calibration mechanism (02) is installed on the inflation mechanism (01) to detect the air pressure. The three sets of fixing mechanisms (03) are all installed on the inflation mechanism (01) to facilitate the fixing of the pressure gauge. The six sets of sealing mechanisms (04) are respectively installed on the three sets of fixing mechanisms (03) to facilitate the sealing of the interface where no pressure gauge is installed. The drive mechanism (05) is installed on the fixing mechanism (03) and drives the fixing mechanism (03) to fix the pressure gauge.

2. A pressure gauge calibration connection fixture as claimed in claim 1, wherein, The inflation mechanism (01) includes a test platform (11), an air pump (12), an air extraction pipe (13), and a filter box (14). The bottom end of the test platform (11) is connected to the ground, the bottom end of the air pump (12) is connected to the top end of the test platform (11), the air extraction pipe (13) is installed on the air pump (12), the bottom end of the filter box (14) is connected to the top end of the test platform (11), and the filter box (14) is internally connected to the air extraction pipe (13).

3. The pressure gauge calibration connection and fixing device as described in claim 2, characterized in that, The calibration mechanism (02) includes a connecting pipe (21), a check valve (22), a regulating valve (23), a connection port (24), a pressure relief valve (25), and a calibration pressure gauge (26). The connecting pipe (21) is installed on the test bench (11) and connected to the air pump (12). The check valve (22) is installed on the connecting pipe (21). The regulating valve (23) is installed on the connecting pipe (21). All three sets of connection ports (24) are installed on the connecting pipe (21) and connected to the inside of the connecting pipe (21). The pressure relief valve (25) is installed on the connecting pipe (21). The calibration pressure gauge (26) is installed on the connecting pipe (21).

4. A pressure gauge calibration connection fixture as claimed in claim 2, wherein, The fixing mechanism (03) includes a lead screw box (31), a bidirectional lead screw (32), a slider (33), and a fixing seat (34). The bottom end of the lead screw box (31) is connected to the top end of the testing table (11). The bidirectional lead screw (32) is rotatably installed in the lead screw box (31). Both sets of sliders (33) are slidably installed in the lead screw box (31). The two sets of fixing seats (34) are respectively installed on the two sets of sliders (33).

5. A pressure gauge calibration connection fixture as claimed in claim 4, wherein, It also includes a built-in sealing gasket for the mounting base (34).

6. A pressure gauge calibration connection fixture as claimed in claim 4, wherein, The sealing mechanism (04) includes multiple sets of springs (41), a sealing plate (42) and two sets of guide bars (43). The fixed seat (34) has a guide groove. The multiple sets of springs (41) are installed in the guide groove of the fixed seat (34). The sealing plate (42) is slidably installed in the guide groove of the fixed seat (34). The two sets of guide bars (43) are installed on the sealing plate (42).

7. The pressure gauge calibration connection and fixing device as described in claim 4, characterized in that, The drive mechanism (05) includes a motor (51), a reducer (52), a drive shaft (53), two sets of first pulleys (54), a first belt (55), two sets of second pulleys (56) and a second belt (57). The bottom end of the motor (51) is connected to the top end of the test bench (11), the bottom end of the reducer (52) is connected to the top end of the test bench (11), the drive shaft (53) is connected to the first set of double-acting screws (32), the two sets of first pulleys (54) are respectively installed on the drive shaft (53) and the second set of double-acting screws (32), the first belt (55) is tensioned between the two sets of first pulleys (54), the two sets of second pulleys (56) are respectively installed on the drive shaft (53) and the third set of double-acting screws (32), and the second belt (57) is tensioned between the two sets of second pulleys (56).

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