A pressure test device for pressure gauges

Abstract

The utility model relates to pressure detection equipment technical field discloses a kind of pressure test verification devices of pressure gauge, including workbench, bottom plate, pressure pump, pressure connecting block and pressure gauge;Further include locking assembly, it contains mounting seat, connecting rod, pressure cap and spring cylinder clamp;Connecting rod is connected to pressure connecting block by mounting seat, spring cylinder clamp cover is equipped in the bottom of pressure gauge;Pressure cap is rotatably arranged in the outer wall of mounting seat, for driving spring cylinder clamp to move in mounting seat and be extruded and contract by inner wall to lock pressure gauge.The device is also provided with fixing assembly, by U-shaped clamp striding in the edge of workbench, and make rubber block press tightly bottom plate by knob driving screw rod.The utility model has realized the quick stable clamping of pressure gauge, and ensure that device bottom plate is firm, effectively improve the efficiency and stability of pressure test verification.

Description

Technical Field

[0001] This utility model relates to the field of pressure testing equipment technology, and in particular to a pressure gauge testing and calibration device. Background Technology

[0002] A pressure gauge is a pressure measuring instrument widely used in industrial production and scientific research experiments. To ensure the accuracy and reliability of pressure gauge measurements, it is necessary to periodically test and calibrate the pressure gauge, which involves installing the pressure gauge on a dedicated calibration device and applying a standard pressure to calibrate its readings.

[0003] In existing technologies, pressure testing and calibration devices typically include a pressure port for mounting a pressure gauge. Currently, the connection between the pressure gauge under test and this pressure port is mostly secured by a threaded connection. The operator needs to manually screw the threaded connector at the bottom of the pressure gauge into the pressure port of the calibration device and, if necessary, tighten it with tools to ensure a tight and stable connection.

[0004] However, this thread-tightening installation method has significant drawbacks. When a large number of pressure gauges need to be calibrated in batches, the repeated screwing in and out operations are time-consuming and laborious, severely reducing the efficiency of the calibration work. At the same time, frequent disassembly and assembly operations can easily lead to wear on the threads of the pressure gauge connectors or calibration device interfaces, affecting the reliability and service life of the connection. Furthermore, improper operation may also result in insecure installation, affecting the stability of the calibration results.

[0005] Therefore, this utility model proposes a pressure gauge testing and calibration device to overcome the shortcomings of the prior art. Summary of the Invention

[0006] To overcome the above shortcomings, this utility model provides a pressure gauge testing and calibration device, which aims to improve the problems of inconvenient pressure gauge fixing operation and unstable calibration caused by the device base plate easily sliding on the workbench in the prior art.

[0007] To achieve the above objectives, this utility model adopts the following technical solution: a pressure gauge testing and calibration device, comprising: a workbench, a base plate, a pressure pump, a pressure connecting block, and a pressure gauge; and a locking assembly, the locking assembly comprising a mounting base, a connecting rod, a pressure cap, and a spring collet; the base plate is disposed on the top of the workbench, the pressure pump is fixed to the base plate, the pressure connecting block is connected to the pressure pump, and the pressure gauge is detachably connected to the pressure connecting block; the connecting rod connects the mounting base and the pressure connecting block; the mounting base has an inner cavity for accommodating the spring collet, the spring collet being used to fit the bottom of the pressure gauge; the pressure cap is rotatably disposed on the outer wall of the mounting base, the pressure cap being used to drive the spring collet to move in the inner cavity, and using the inner wall of the inner cavity to squeeze the spring collet to lock the pressure gauge.

[0008] Preferably, the pressure gauge testing and calibration device further includes a fixing component, which includes a U-shaped clamp, screws, a screw rod, a knob, and a rubber block.

[0009] Preferably, the U-shaped clamp is fixed to the outside of the base plate by the screw; the U-shaped clamp is used to span the edge of the workbench.

[0010] Preferably, the screw thread passes through the U-shaped clamp, the knob is fixedly connected to one end of the screw, and the rubber block is fixedly connected to the other end of the screw.

[0011] Preferably, the rubber block moves toward the top of the base plate when the screw rotates and is used to press the base plate.

[0012] Preferably, the connecting rod is fixed to the top of the pressure connecting block.

[0013] Preferably, the outer wall of the mounting base is provided with external threads, and the pressure cap is provided with internal threads and is threadedly connected to the external threads.

[0014] Preferably, the inner wall of the cavity is a conical surface, and the pressure cap is used to abut against the spring collet and drive the spring collet to move axially along the conical surface.

[0015] This utility model has the following beneficial effects: 1. This utility model, by setting a locking component, uses a pressure cap to drive a spring cylinder to be squeezed and contracted within the mounting base by a conical surface to clamp the pressure gauge, thus solving the problems of cumbersome operation and unstable connection of pressure gauge fixing in the prior art, and achieving the effect of quick loading and unloading of pressure gauge and stable and reliable clamping.

[0016] This invention solves the problem of unstable calibration caused by slippage of the base plate during the pressure test in existing calibration devices by setting a fixing component, using a U-shaped clamp spanning the edge of the workbench, and driving the screw and rubber block to press the base plate firmly onto the workbench by rotating the knob. It achieves the effect of fixing the entire device firmly and improving the stability of the calibration process. Attached Figure Description

[0017] Figure 1 This is a perspective view of a pressure gauge testing and calibration device proposed in this utility model; Figure 2 A schematic diagram of a U-shaped clamp for a pressure gauge testing and calibration device proposed in this utility model; Figure 3 This is a schematic diagram of a spring clip for a pressure gauge testing and calibration device proposed in this utility model. Figure 4 for Figure 2 Enlarged view of point A in the middle.

[0018] Legend: 1. Workbench; 2. Base plate; 3. Pressure pump; 4. Pressure connecting block; 5. Pressure gauge; 6. Locking assembly; 601. Connecting rod; 602. Mounting base; 603. Pressure cap; 604. Spring collet; 7. Fixing assembly; 701. U-shaped clamp; 702. Screw; 703. Threaded rod; 704. Knob; 705. Rubber block. Detailed Implementation

[0019] 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.

[0020] Reference Figures 1-4 An embodiment of this utility model is provided: a pressure gauge testing and calibration device, including a workbench 1 and a base plate 2 set on the top of the workbench 1. The workbench 1 is used as a support platform for the entire device. A pressure pump 3 is fixed on the base plate 2. The pressure pump 3 is connected to a pressure connecting block 4. A pressure gauge 5 is detachably connected to the pressure connecting block 4. The pressure gauge testing and calibration device also includes a locking assembly 6, which is used to quickly fix the pressure gauge 5. The locking assembly 6 includes a mounting base 602, a connecting rod 601, a pressure cap 603, and a spring collet 604. The connecting rod 601 is used to connect the mounting base 602 and the pressure connecting block 4. The mounting base 602 has an inner cavity for accommodating the spring collet 604. The spring collet 604 is used to fit the bottom of the pressure gauge 5. The pressure cap 603 is rotatably disposed on the outer wall of the mounting base 602. The pressure cap 603 is used to drive the spring collet 604 to move in the inner cavity and to use the inner wall of the inner cavity to squeeze the spring collet 604 to lock the pressure gauge 5. The pressure gauge testing and calibration device also includes a fixing component (7), and the fixing component (7) forms a specific structural fit and connection relationship with the aforementioned base plate (2) and workbench (1). The fixing component (7) includes a U-shaped clamp (701), a screw (702), a screw rod (703), a knob (704), and a rubber block (705). The U-shaped clamp (701) is fixed to the outside of the base plate (2) by the screw (702). The U-shaped clamp (701) is used to straddle the edge of the workbench (1). The function of the U-shaped clamp (701) is to provide installation support for the screw rod (703) and to use the workbench (1) as a reaction force point. Meanwhile, the screw (703) is threaded through the U-shaped clamp (701), and the knob (704) is fixedly connected to one end of the screw (703) for manual rotation. The rubber block (705) is fixedly connected to the other end of the screw (703). In the assembled state, the rubber block (705) moves toward the top of the base plate (2) when the screw (703) rotates and is used to press the base plate (2) to ensure that the base plate (2) will not slide on the workbench (1) during the inspection process; The connecting rod 601 is fixed to the top of the pressure connecting block 4. The connecting rod 601 is used to stably fix the mounting base 602 to the pressure connecting block 4. The outer wall of the mounting base 602 is provided with external threads, and the pressure cap 603 is provided with internal threads and is threadedly connected to the external threads of the mounting base 602. The inner wall of the inner cavity is a conical surface. The pressure cap 603 is used to abut against the spring collet 604 and drive the spring collet 604 to move axially along the conical surface.

[0021] Working principle: When fixing the pressure gauge 5, the bottom of the pressure gauge 5 is passed through the spring collet 604 and placed in the inner cavity of the mounting base 602. Then, the pressure cap 603 is rotated. The pressure cap 603 rotates on the mounting base 602 through the cooperation of the external and internal threads and abuts against the spring collet 604, driving the spring collet 604 to move axially. During the movement, the spring collet 604 is squeezed by the conical surface of the inner cavity and contracts under force, thereby tightly clamping the bottom of the pressure gauge 5 to complete the locking. When fixing the device, place the base plate 2 on top of the workbench 1, with the U-shaped clamp 701 straddling the edge of the workbench 1. Turn the knob 704, which drives the screw 703 to rotate. Since the screw 703 is threaded through the U-shaped clamp 701, the rotational motion of the screw 703 is converted into linear motion, which drives the rubber block 705 connected to the other end of the screw 703 to move towards the top of the base plate 2. Finally, the rubber block 705 presses the base plate 2 tightly, and the reaction force of the workbench 1 is used to firmly fix the base plate 2 on the workbench 1. During the test, the pressure pump 3 generates pressure, which is transmitted to the firmly fixed pressure gauge 5 through the pressure connecting block 4. The pressure gauge 5 displays the pressure value in real time, thus completing the pressure test.

Claims

1. A pressure gauge testing and calibration device, comprising: A workbench (1) and a base plate (2) set on the top of the workbench (1), a pressure pump (3) is fixed on the base plate (2), the pressure pump (3) is connected to a pressure connection block (4), and a pressure gauge (5) is detachably connected to the pressure connection block (4). Its characteristic is that it further includes: The locking assembly (6) includes: a mounting base (602), a connecting rod (601), a pressure cap (603), and a spring collet (604). The connecting rod (601) is used to connect the mounting base (602) and the pressure connecting block (4). The mounting base (602) has an inner cavity for accommodating the spring collet (604). The spring collet (604) is used to fit the bottom of the pressure gauge (5). The pressure cap (603) is rotatably disposed on the outer wall of the mounting base (602). The pressure cap (603) is used to drive the spring collet (604) to move in the inner cavity and to use the inner wall of the inner cavity to squeeze the spring collet (604) to lock the pressure gauge (5).

2. The pressure testing and calibration device for a pressure gauge according to claim 1, characterized in that: It also includes a fixing component (7), which includes a U-shaped clip (701), a screw (702), a threaded rod (703), a knob (704), and a rubber block (705).

3. The pressure testing and calibration device for a pressure gauge according to claim 2, characterized in that: The U-shaped clamp (701) is fixed to the outside of the base plate (2) by the screw (702); the U-shaped clamp (701) is used to span the edge of the workbench (1).

4. The pressure testing and calibration device for a pressure gauge according to claim 3, characterized in that: The screw (703) is threaded through the U-shaped clamp (701), the knob (704) is fixedly connected to one end of the screw (703), and the rubber block (705) is fixedly connected to the other end of the screw (703).

5. The pressure testing and calibration device for a pressure gauge according to claim 4, characterized in that: The rubber block (705) moves toward the top of the base plate (2) when the screw (703) rotates and is used to press the base plate (2).

6. The pressure testing and calibration device for a pressure gauge according to claim 1, characterized in that: The connecting rod (601) is fixed to the top of the pressure connecting block (4).

7. The pressure testing and calibration device for a pressure gauge according to claim 1, characterized in that: The outer wall of the mounting base (602) is provided with an external thread, and the pressure cap (603) is provided with an internal thread and is threadedly connected to the external thread.

8. The pressure testing and calibration device for a pressure gauge according to claim 1, characterized in that: The inner wall of the cavity is a conical surface, and the pressure cap (603) is used to abut against the spring collet (604) and drive the spring collet (604) to move axially along the conical surface.

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