Diaphragm pressure gauge positioning mechanism

Abstract

The utility model relates to an improvement of a diaphragm pressure gauge verification mode, in particular to a diaphragm pressure gauge positioning mechanism, which realizes accurate limiting of a diaphragm pressure gauge through a manual adjustment mode, is convenient for a pressing mechanism to carry out accurate pressing, and further ensures the sealing performance of the diaphragm pressure gauge during verification. Comprising a verification platform (2) provided with a verification air hole (1), two sides of the verification air hole (1) are respectively provided with symmetrically distributed baffle blocks (3), each baffle block (3) is in sliding fit with the verification platform (2), and the two baffle blocks (3) are respectively connected with a synchronous driving mechanism through connecting rods (4); the position of the diaphragm pressure gauge is adjusted through the structural design and the motion design of the check block, it is effectively guaranteed that the center of the diaphragm pressure gauge is coaxial with the verification air hole, then the sealing performance of the pressing device when the pressing device presses the diaphragm pressure gauge is effectively guaranteed, and therefore it is guaranteed that the verification process of the diaphragm pressure gauge is stable and safe.

Description

Technical Field

[0001] This utility model relates to an improvement in the calibration method of diaphragm pressure gauges, specifically to a positioning mechanism for diaphragm pressure gauges. Background Technology

[0002] Diaphragm pressure gauges are pressure gauges mainly used in biopharmaceutical and food processing applications to verify the pressure of liquid media. They belong to the category of pressure instruments subject to mandatory verification in my country. Diaphragm pressure gauges are divided into sanitary diaphragm pressure gauges and flange-type diaphragm pressure gauges. Since these two types of diaphragm pressure gauges do not have a threaded structure, their clamping and fixing is a challenge.

[0003] To address this challenge, the current clamping method involves manually placing the diaphragm pressure gauge above the outlet of the calibration air circuit, and then using a clamping mechanism to press the diaphragm pressure gauge with a pressure greater than that of the outlet, thereby ensuring a tight seal between the diaphragm pressure gauge and the outlet.

[0004] However, since the diaphragm pressure gauge is placed manually at the air outlet, it is difficult to effectively ensure that the bottom of the diaphragm pressure gauge is coaxial with the air outlet. This may cause the position to shift when the clamping mechanism is tightened, thus making it difficult to guarantee the sealing performance. Utility Model Content

[0005] The purpose of this utility model is to provide a positioning mechanism for a diaphragm pressure gauge, which achieves precise positioning of the diaphragm pressure gauge through manual adjustment, facilitates accurate clamping by the clamping mechanism, and thus ensures the sealing performance of the diaphragm pressure gauge during calibration.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a diaphragm pressure gauge positioning mechanism, comprising a calibration table with calibration air holes.

[0007] The test vent is provided with symmetrically distributed baffles on both sides.

[0008] Each stop block slides into the calibration table.

[0009] The two stops are connected to the synchronous drive mechanism via connecting rods.

[0010] Preferably, the synchronous drive mechanism includes a disc component, the center point of which is rotatably engaged with the bottom of the calibration table, and the connecting rods are also located at the bottom of the calibration table. The ends of the two connecting rods are rotatably connected to the disc component, and the connection positions of the two connecting rods and the disc component are symmetrical with respect to the center point of the disc component.

[0011] Preferably, the device also includes an adjusting member connected to the disc component.

[0012] Preferably, the adjusting member is a swing arm and the length of the swing arm extends beyond the edge of the calibration table.

[0013] Preferably, the stop is a V-shaped clamp with the recessed part of the V-shaped clamp facing the inspection air hole.

[0014] Preferably, the V-shaped clamp has a protrusion at its end.

[0015] Preferably, the protrusion and the end of the V-shaped clamp are integrally formed.

[0016] The positioning mechanism of the diaphragm pressure gauge of this utility model has the following advantages: the position of the diaphragm pressure gauge is adjusted through the structural and motion design of the stop block, which effectively ensures that the center of the diaphragm pressure gauge is coaxial with the calibration air hole, thereby effectively ensuring the sealing performance when the clamping device clamps the diaphragm pressure gauge, thus ensuring the stability and safety of the diaphragm pressure gauge calibration process. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the positioning mechanism of the diaphragm pressure gauge of this utility model. Figure 1 ;

[0018] Figure 2 This is a schematic diagram of the positioning mechanism of the diaphragm pressure gauge of this utility model. Figure 2 .

[0019] Reference numerals in the attached drawings: 1. Inspection air hole; 2. Inspection table; 3. Stop block; 4. Connecting rod; 5. Disc component; 6. Adjusting component; 7. Protrusion; 8. Strip groove; 9. Annular groove; 10. Connector; 11. Roller; 12. Bearing. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0021] The positioning mechanism for a diaphragm pressure gauge of this utility model includes a calibration platform 2 with a calibration air hole 1. A clamping mechanism for fixing the diaphragm pressure gauge onto the calibration platform 2 is provided above the calibration platform 2. Annular grooves 9 are arranged around the calibration air hole 1, and sealing rings are provided on the annular grooves 9. Symmetrically distributed stops 3 are provided on both sides of the calibration air hole 1, and each stop 3 slides with the calibration platform 2. The two stops 3 are connected to a synchronous drive mechanism via connecting rods 4. When limiting the diaphragm pressure gauge, the diaphragm pressure gauge is first placed in the annular groove 9. The synchronous drive mechanism synchronously drives the two stops 3 to move towards the calibration air hole 1. The two stops 3 are equidistant from the calibration air hole 1 and move synchronously, thus making the center of the diaphragm pressure gauge coaxial with the center of the calibration air hole 1. The height of the stops 3 is lower than the height of the diaphragm pressure gauge base. When the clamping mechanism presses down, it presses the base of the diaphragm pressure gauge onto the calibration platform 2. The presence of the stops 3 does not interfere with the pressing action of the clamping mechanism.

[0022] The synchronous drive mechanism includes a disc component 5, the center point of which is rotatably engaged with the bottom of the calibration table 2. Connecting rods 4 are also located at the bottom of the calibration table 2. The ends of the two connecting rods 4 are rotatably connected to the disc component 5, and the connection positions of the two connecting rods 4 and the disc component 5 are symmetrical with respect to the center point of the disc component 5. Rotation of the disc component 5 can pull the two connecting rods closer or further apart, thereby synchronously driving the movement of the stop block 3. The stop block 3 is a V-shaped clamp with its recessed portion facing the calibration air hole 1. The end of the V-shaped clamp has a protrusion 7. The protrusion 7 and the end of the V-shaped clamp are integrally formed. This design ensures that when the diaphragm pressure gauge comes into contact with the V-shaped clamp, the base of the diaphragm pressure gauge falls into the V-groove of the V-shaped clamp. The center of the groove opening in the V-groove is located on the same axis as the calibration air hole 1, thus enabling the adjustment of the diaphragm pressure gauge not only to achieve horizontal proximity to the calibration air hole but also to vertically adjust the diaphragm pressure gauge.

[0023] During specific assembly, the calibration table 2 is provided with strip grooves 8 on both sides coaxial with the calibration air hole 1. The stop block 3 is connected to the connecting rod 4 through the strip groove 8 via the plug-in 10. The plug-in 10 is provided with rollers 11. The plug-in 10 slides with the inner wall of the strip groove 8 through the rollers 11. The disc part 5 is installed below the calibration table 2 through the bearing 12. The pipe passes through the bearing 12 and is connected to the calibration air hole 1, without affecting the air circuit structure of the diaphragm pressure gauge.

[0024] It also includes an adjusting component 6, which is connected to the disc component 5. The adjusting component 6 is a swing arm with a length that extends beyond the edge of the calibration table 2. The adjusting component 6 can be manually operated to drive the disc component 5 to rotate, thereby achieving the relative approach and relative distance of the stop block 3.

[0025] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A diaphragm pressure gauge positioning mechanism, comprising a testing table (2) provided with a testing gas hole (1), characterized in that, the testing gas hole (1) is provided with symmetrically distributed stoppers (3) on both sides, each stopper (3) is in sliding fit with the testing table (2), the two stoppers (3) are connected with a synchronous driving mechanism through connecting rods (4) respectively.

2. The diaphragm pressure gauge positioning mechanism as claimed in claim 1, characterized in that The synchronous driving mechanism comprises a disc piece (5), the center point of the disc piece (5) is in rotary fit with the bottom of the testing table (2), the connecting rods (4) are also located at the bottom of the testing table (2), the ends of the two connecting rods (4) are rotatably connected with the disc piece (5), and the connection positions of the two connecting rods (4) with the disc piece (5) are centrally symmetric with respect to the center point of the disc piece (5).

3. The diaphragm pressure gauge positioning mechanism as claimed in claim 2, characterized in that Further comprising an adjusting piece (6), which is connected with the disc piece (5).

4. The mechanism of claim 3, wherein The adjusting piece (6) is a swing arm and the swing arm length exceeds the edge of the testing table (2).

5. The diaphragm pressure gauge positioning mechanism as defined in claim 1, wherein, The stopper (3) is a V-shaped clamp and the recess of the V-shaped clamp faces the testing gas hole (1).

6. The diaphragm pressure gauge positioning mechanism as claimed in claim 5, characterized in that The end of the V-shaped clamp is provided with a protrusion (7).

7. The diaphragm pressure gauge positioning mechanism as claimed in claim 6, characterized in that The protrusion (7) and the end of the V-shaped clamp are in one-piece structure.

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