A multifunctional pressure calibrator

Abstract

The utility model discloses a multifunctional pressure calibrator, which relates to the technical field of pressure calibration, and comprises a cylinder, wherein an adjusting knob is installed at the left end of the cylinder, a mounting joint is fixedly installed at the upper end of the cylinder, a calibration digital display is installed at the upper end of the mounting joint, a mounting seat is installed at the lower end of the cylinder, and a piston rod is installed at the lower end of the mounting seat. The multifunctional pressure calibrator is provided with a connecting seat, a protective cover and a hose, etc., the hose is wound around the connecting seat, and the pressure measuring joint is placed in a storage groove and fits with a positioning plate, and then the protective cover is installed on the outside of the connecting seat, the protective cover is threadedly installed on the outside of the connecting plate, and the pressure measuring joint is clamped between the positioning plate and the protective cover, so as to facilitate the storage and protection of the hose and avoid damage to the hose when carrying, and the pressure measuring joint is isolated and protected to avoid impurities from entering the pressure measuring joint during carrying, thereby ensuring the accuracy of the calibration result.

Description

Technical Field

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

[0002] Pressure in physics is the force acting vertically on the surface of an object due to mutual squeezing between objects, or the vertical force of gas on the surface of solid and liquid, or the vertical force of liquid on the surface of solid. The measurement of pressure is an indispensable physical indicator in engineering and quality technology. Therefore, the accuracy of pressure measurement equipment is crucial, and it is calibrated and tested by pressure calibrator.

[0003] For example, patent number CN220751444U discloses a multifunctional pressure calibrator, including: a base, an interlocking groove, a lower card seat and a battery slot. The rear end of the upper surface of the base is provided with three groups of interlocking grooves. Compared with the prior art, the utility model has the following beneficial effects: by adding interlocking grooves, interlocking blocks, an upper card seat, a lower card seat, a connecting pipe one and studs, the interlocking blocks at the lower ends of the three connecting seats are respectively interlocked with the three groups of interlocking grooves provided on the upper surface of the base, and the studs at the upper ends of the three connecting seats are respectively connected to the calibrator body, the oil cup and the pressure gauge, and a lower card seat is provided at the front end center of the upper surface of the base, so that the outer surface of the hand pump is fitted with the inner side surface of the lower card seat, and the inner side surface of the upper card seat is also fitted with the outer surface of the hand pump. The hand pump and the three groups of connecting seats are connected by connecting pipes one, two and three, so as to achieve a detachable effect. By adding a battery slot and a rechargeable battery, the calibration work can be satisfied when there is no power supply.

[0004] However, the existing pressure calibrators have a relatively complex structure, which makes them inconvenient to carry and operate, affecting work efficiency. At the same time, during the calibration work, they generally need to be connected through a hose, but the hose lacks storage and protection structures during carrying and is easily damaged, affecting the sealing effect during the calibration work. Utility Model Content

[0005] In view of the deficiencies in the prior art, the utility model provides a multifunctional pressure calibrator, which solves the problem that the existing pressure calibrators are relatively complex in structure, making them inconvenient to carry and operate, affecting work efficiency; at the same time, during the calibration work, it is generally necessary to connect them through a hose, but the hose lacks storage and protection structure during carrying and is easily damaged, affecting the sealing effect during the calibration work.

[0006] To achieve the above objectives, the utility model is implemented through the following technical solutions: a multifunctional pressure calibrator, comprising a cylinder, an adjusting knob is installed at the left end of the cylinder, a mounting joint is fixedly installed at the upper end of the cylinder, a calibration digital display is installed at the upper end of the mounting joint, a mounting seat is installed at the lower end of the cylinder, a piston rod is installed at the lower end of the mounting seat, handles are rotatably connected to the left and right ends of the mounting seat, a connecting rod is arranged on the inner side of the handle, a connecting seat is arranged at the right end of the cylinder, a protective cover is arranged on the outer side of the connecting seat, a hose is installed on the surface of the connecting seat, and a pressure measuring joint is installed at the end of the hose away from the connecting seat.

[0007] Preferably, a switch valve is installed at the front end of the cylinder, and the upper end of the piston rod extends to the inner side of the cylinder.

[0008] Preferably, a hinge seat is installed at the lower end of the piston rod, and the piston rod and the lower end of the cylinder are slidably connected.

[0009] Preferably, two connecting rods are symmetrically arranged, one end of the two connecting rods is rotatably connected to the handles respectively, and the other ends of the two connecting rods are rotatably connected to the left and right ends of the hinge seat.

[0010] Preferably, a connecting plate is fixedly installed on the left end of the connecting seat surface, a receiving groove is opened at the right end of the connecting seat, a positioning plate is arranged at the left end of the inner side of the receiving groove, and the left end of the positioning plate and the connecting seat are movably connected by a spring.

[0011] Preferably, the left end of the protective cover is threadedly connected to the connecting plate, and the pressure measuring joint is socketed with the receiving groove. Beneficial Effects

[0012] The utility model provides a multifunctional pressure calibrator. Compared with the prior art, it has the following beneficial effects:

[0013] 1. The multifunctional pressure calibrator is equipped with a cylinder, a piston rod and a calibration digital display. During calibration, the pressure measuring joint is connected to the part to be measured. The personnel drives the piston rod to move by pressing the handle to control the operation of the cylinder to realize the pressure calibration. The overall device structure is small, convenient for handheld operation, easy to carry, and improves convenience.

[0014] 2. The multifunctional pressure calibrator is provided with a connecting seat, a protective cover and a hose, etc. The hose is wound around the connecting seat, and the pressure measuring joint is placed in the storage groove and fit with the positioning plate, and then the protective cover is installed on the outside of the connecting seat, and the protective cover is threadedly installed on the outside of the connecting plate, and the pressure measuring joint is clamped between the positioning plate and the protective cover, so as to facilitate the storage and protection of the hose and avoid damage to the hose during carrying, and the pressure measuring joint is isolated and protected to avoid impurities from entering the pressure measuring joint during carrying, thereby ensuring the accuracy of the calibration result. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a three-dimensional structural schematic diagram of the utility model.

[0016] Figure 2 It is a front view structural schematic diagram of the utility model.

[0017] Figure 3 It is a schematic diagram of the cross-sectional structure of the connecting seat of the utility model.

[0018] In the figure: 1. Cylinder; 2. Adjustment knob; 3. Mounting joint; 4. Calibration digital display; 5. Piston rod; 51. Hinge seat; 6. Mounting seat; 7. Handle; 8. Connecting rod; 9. Connecting seat; 91. Connecting plate; 92. Storage slot; 93. Positioning plate; 10. Protective cover; 11. Hose; 12. Pressure measuring joint; 13. Switch valve. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0020] See also Figure 1-3 The utility model provides a technical solution: a multifunctional pressure calibrator, comprising a cylinder 1, an adjusting knob 2 is installed at the left end of the cylinder 1, a mounting joint 3 is fixedly installed at the upper end of the cylinder 1, a calibration digital display 4 is installed at the upper end of the mounting joint 3, a mounting seat 6 is installed at the lower end of the cylinder 1, a piston rod 5 is installed at the lower end of the mounting seat 6, a switch valve 13 is installed at the front end of the cylinder 1, the upper end of the piston rod 5 extends to the inner side of the cylinder 1, the lower end of the piston rod 5 is installed with a hinge seat 51, and the piston rod 5 and the lower end of the cylinder 1 slide The left and right ends of the mounting seat 6 are rotatably connected with handles 7, and a connecting rod 8 is arranged inside the handle 7. Two connecting rods 8 are symmetrically arranged, and one end of the two connecting rods 8 is rotatably connected to the handle 7 respectively, and the other end of the two connecting rods 8 is rotatably connected to the left and right ends of the hinge seat 51, so as to connect the pressure measuring joint 12 and the place to be measured. The personnel drives the piston rod 5 to move by pressing the handle 7, controls the work of the cylinder 1, and realizes the pressure calibration work. The overall device structure is small, convenient for handheld operation, easy to carry, and improves convenience;

[0021] A connecting seat 9 is provided at the right end of the cylinder 1, a connecting plate 91 is fixedly installed at the left end of the surface of the connecting seat 9, a receiving groove 92 is provided at the right end of the connecting seat 9, a positioning plate 93 is provided at the left end of the inner side of the receiving groove 92, the left end of the positioning plate 93 and the connecting seat 9 are movably connected through a spring, a protective cover 10 is provided on the outer side of the connecting seat 9, a hose 11 is installed on the surface of the connecting seat 9, a pressure measuring joint 12 is installed at the end of the hose 11 away from the connecting seat 9, the left end of the protective cover 10 is threadedly connected to the connecting plate 91, and the pressure measuring joint 12 and the receiving groove 9 are connected. 2 sleeve connection, the hose 11 is wound on the connecting seat 9, and the pressure measuring joint 12 is placed in the storage groove 92 and fits with the positioning plate 93, and then the protective cover 10 is installed on the outside of the connecting seat 9, the protective cover 10 is threadedly installed on the outside of the connecting plate 91, and the pressure measuring joint 12 is clamped between the positioning plate 93 and the protective cover 10, which is convenient for storing and protecting the hose 11 and avoiding damage to the hose 11 when carrying, and isolating and protecting the pressure measuring joint 12 to avoid impurities from entering the pressure measuring joint 12 during carrying, thereby ensuring the accuracy of the calibration result.

[0022] When working, the protective cover 10 is disassembled, the hose 11 can be unwound from the connecting seat 9, and the pressure measuring joint 12 is taken out from the storage groove 92, which is convenient for connecting with the instrument to be calibrated. The personnel can drive the piston rod 5 to move by pressing the handle 7 to control the operation of the cylinder 1 to realize the pressure calibration. The overall device structure is small, convenient for handheld operation, easy to carry, and improved convenience. When carrying, the hose 11 is wound around the connecting seat 9, and the pressure measuring joint 12 is placed in the storage groove 92 and fits with the positioning plate 93. Then the protective cover 10 is installed on the outside of the connecting seat 9, and the protective cover 10 is threadedly installed on the outside of the connecting plate 91, and the pressure measuring joint 12 is clamped between the positioning plate 93 and the protective cover 10, which is convenient for the storage and protection of the hose 11 to avoid damage to the hose 11 when carrying, and the pressure measuring joint 12 is isolated and protected to avoid impurities from entering the pressure measuring joint 12 during carrying, thereby ensuring the accuracy of the calibration result.

[0023] Meanwhile, the contents not described in detail in this specification belong to the prior art known to those skilled in the art.

Claims

1. A multifunctional pressure calibrator, comprising a cylinder (1), characterized in that: The left end of the cylinder (1) is provided with an adjusting knob (2), the upper end of the cylinder (1) is fixedly provided with a mounting joint (3), the upper end of the mounting joint (3) is provided with a calibrated digital display (4), the lower end of the cylinder (1) is provided with a mounting seat (6), the lower end of the mounting seat (6) is provided with a piston rod (5), the left and right ends of the mounting seat (6) are rotatably connected with handles (7), the inner side of the handle (7) is provided with a connecting rod (8), the right end of the cylinder (1) is provided with a connecting seat (9), the outer side of the connecting seat (9) is provided with a protective cover (10), the surface of the connecting seat (9) is provided with a hose (11), and the end of the hose (11) away from the connecting seat (9) is provided with a pressure measuring joint (12).

2. A multifunctional pressure calibrator according to claim 1, characterized in that: A switch valve (13) is installed at the front end of the cylinder (1), and the upper end of the piston rod (5) extends to the inside of the cylinder (1).

3. The multifunctional pressure calibrator according to claim 1, characterized in that: A hinge seat (51) is installed at the lower end of the piston rod (5), and the piston rod (5) and the lower end of the cylinder (1) are slidably connected.

4. A multifunctional pressure calibrator according to claim 3, characterized in that: Two connecting rods (8) are symmetrically arranged, one end of the two connecting rods (8) is rotatably connected to the handle (7) respectively, and the other end of the two connecting rods (8) is rotatably connected to the left and right ends of the hinge seat (51).

5. The multifunctional pressure calibrator according to claim 1, characterized in that: A connecting plate (91) is fixedly mounted on the left end of the surface of the connecting seat (9), a receiving groove (92) is provided on the right end of the connecting seat (9), a positioning plate (93) is provided on the left end of the inner side of the receiving groove (92), and the left end of the positioning plate (93) and the connecting seat (9) are movably connected via a spring.

6. The multifunctional pressure calibrator according to claim 5, characterized in that: The left end of the protective cover (10) is threadedly connected to the connecting plate (91), and the pressure measuring joint (12) is sleeved to the receiving groove (92).

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