A testing device for pressure gauge production

Abstract

This utility model discloses a testing device for pressure gauge production, relating to the technical field of testing equipment. The utility model includes a workbench, with a testing box mounted on top of the workbench. The testing box contains several cavities, each housing a connecting assembly. A gas transport assembly is housed within each cavity. A sealing assembly is mounted on top of the testing box, and an agitating assembly is mounted on top of the sealing assembly. This utility model, through the cooperation of the sealing assembly and the cavities, forms a sealed space. When testing a pressure gauge, if the overall sealing performance of the pressure gauge is poor, the airflow transported to the pressure gauge can flow into the sealed space, increasing the air pressure within the sealed space. Simultaneously, the agitating assembly agitates the pressure gauge. This testing method allows operators to clearly judge the sealing performance of the corresponding pressure gauge through the agitating assembly, thereby avoiding missed detections during pressure gauge testing.

Description

Technical Field

[0001] This utility model belongs to the field of testing equipment technology, and specifically relates to a testing device for pressure gauge production. Background Technology

[0002] Pressure gauges measure pressure based on the deformation of a pressure-sensing element under pressure. If the pressure gauge is poorly sealed and has leaks, some gas or liquid will escape from the leaks during pressure measurement, preventing the pressure from being accurately transmitted to the sensing element. Therefore, after the pressure gauge is manufactured, its sealing performance needs to be tested using testing equipment.

[0003] A vacuum waterproofing testing device for the production of digital pressure gauges is disclosed in Chinese Patent Network CN212458793U. It includes a transparent cylindrical box, a circular window, a circular cover plate, a bent pipe, a vacuum pump, a lower sealing gasket, an upper sealing gasket, a guide groove, an internally threaded pipe, a short column, a drain valve, a micro motor, a screw, a left circular groove, a right circular groove, a circular electromagnet, and a side mesh plate.

[0004] This device primarily uses a vacuum pump to evacuate air from the interior of a transparent cylindrical chamber. It then observes which digital pressure gauge has bubbles or continuous bubbles around it; the presence or continuous appearance of bubbles indicates a poor seal on that gauge. Because the device tests multiple pressure gauges simultaneously, if bubbles appear around a gauge, they will continuously rise, making it difficult for the operator to accurately determine which gauge the bubble originated from. This can easily lead to missed checks during the pressure gauge seal test.

[0005] No effective solutions have yet been proposed to address the problems in the relevant technologies. Utility Model Content

[0006] In view of the problems in the related technologies, this utility model proposes a testing device for pressure gauge production to overcome the above-mentioned technical problems existing in the existing related technologies.

[0007] To solve the above-mentioned technical problems, this utility model is achieved through the following technical solution:

[0008] This utility model relates to a testing device for pressure gauge production, comprising a workbench, a testing box on the top of the workbench, several cavities inside the testing box, a connecting component inside each cavity, a gas transport component inside the connecting component, a sealing component on the top of the testing box, an agitation component on the top of the sealing component, and a lifting component at the bottom of the workbench, the lifting component being connected to the connecting component and the sealing component.

[0009] The connecting assembly is used to connect with the pressure gauge, the lifting assembly is used to move the connecting assembly and the sealing assembly downwards so that the sealing assembly seals the test chamber, the gas transport assembly is used to transport gas into the interior of the pressure gauge, and the agitation assembly is used to detect the gas pressure inside the test chamber.

[0010] Furthermore, the connecting assembly includes a connecting pipe, and multiple connecting pipes are provided corresponding to the cavity. The connecting pipes are movably connected to the detection box. A sealing sleeve is fixedly connected to the bottom of the inner wall of the detection box corresponding to the connecting pipe. The connecting pipe passes through the detection box and is movably connected to the sealing sleeve. A threaded groove is provided on the inner wall of the connecting pipe.

[0011] Furthermore, the gas transport assembly includes a branch pipe, and multiple branch pipes are provided with corresponding connecting pipes. The branch pipe is movably connected to the corresponding connecting pipe. One end of the branch pipe is fixedly connected to a transport pipe, and one end of the transport pipe passes through the workbench. A support frame is fixedly installed on the inner wall of the workbench, and the transport pipe is sleeved inside the support frame.

[0012] Furthermore, the sealing assembly includes a sealing groove, and multiple sealing grooves are provided on the top of the testing box corresponding to the cavity. A sealing frame is movably connected inside the sealing groove, and a sealing plate is fixedly connected to the top of the sealing frame.

[0013] Furthermore, the agitation assembly includes a mounting groove, and multiple mounting grooves are provided on the sealing plate corresponding to the cavity. An agitation diaphragm is fixedly connected to the inner wall of the mounting groove.

[0014] Furthermore, the lifting assembly includes a lifting plate, a plurality of connecting pipes are disposed on the lifting plate, a connecting frame is fixedly installed on the lifting plate, the connecting frame passes through the workbench and is fixedly installed together with the sealing plate, an mounting frame is fixedly installed on the inner wall of the workbench, a screw is rotatably connected to the top of the mounting frame, the screw is threadedly connected to the lifting plate, a guide rod is fixedly connected to the top of the mounting frame, the guide rod is movably connected to the lifting plate, and a motor is fixedly installed at the bottom of the mounting frame, the output end of the motor is fixedly connected together with the screw.

[0015] Furthermore, the connecting pipe is movably connected to the lifting plate, a connecting plate is fixedly connected to the outer surface of the connecting pipe, a spring is fixedly connected between the bottom of the connecting plate and the top of the lifting plate, and a limit plate is fixedly connected to both the top and bottom of the connecting pipe.

[0016] This utility model has the following beneficial effects:

[0017] 1. This utility model uses a sealing component to allow multiple cavities inside the testing chamber to form a sealed space. The pressure gauge, supported by the connecting component, can be placed inside this sealed space. Simultaneously, the gas transport component can transport airflow into the pressure gauge through the connecting component. When the overall sealing of the pressure gauge is poor, the airflow inside the pressure gauge can flow into the sealed space, increasing the air pressure inside the sealed space. At the same time, the agitating component can agitate the pressure gauge. This testing method allows operators to clearly judge the sealing performance of the corresponding pressure gauge through several agitating components, thereby avoiding missed detections when testing the sealing performance of the pressure gauge.

[0018] 2. This utility model uses a motor and screw to move the lifting plate upwards. When the lifting plate moves several connecting pipes upwards and the connecting plate contacts the bottom of the testing box, the lifting plate can drive the sealing plate to continue moving upwards via the connecting frame. At this time, the lifting plate compresses the spring, and the connecting pipes begin to slide on the lifting plate, thereby increasing the distance between the top of the connecting pipe and the sealing plate. This design ensures that the sealing plate does not obstruct the pressure gauge when it is installed on the connecting pipe. At the same time, when the connecting pipe moves the pressure gauge into the testing box, the distance between the sealing plate and the pressure gauge is smaller, resulting in a smaller space between the sealing plate, the testing box, and the cavity. Therefore, when the pressure gauge is tested, if the pressure gauge's sealing performance is not high, the diaphragm can change more significantly.

[0019] Of course, any product implementing this utility model does not necessarily need to achieve all of the advantages described above at the same time. Attached Figure Description

[0020] To more clearly illustrate the technical solutions of the utility model embodiments, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0021] Figure 1 This is a schematic diagram of the external outline structure of this utility model;

[0022] Figure 2 For the present utility model Figure 1 A schematic diagram of the structure viewed from below;

[0023] Figure 3 This is a schematic diagram of the detection box structure of this utility model;

[0024] Figure 4 This is a schematic diagram of the gas transport component structure of this utility model;

[0025] Figure 5 This is a schematic diagram of the connection component structure of this utility model;

[0026] Figure 6 This is a schematic diagram of the sealing component structure of this utility model.

[0027] The attached diagram lists the components represented by each number as follows:

[0028] 1. Workbench; 2. Testing box; 3. Cavity; 4. Connecting assembly; 401. Connecting pipe; 402. Sealing sleeve; 403. Threaded groove; 5. Gas transport assembly; 501. Branch pipe; 502. Transport pipe; 503. Support frame; 6. Sealing assembly; 601. Sealing groove; 602. Sealing frame; 603. Sealing plate; 7. Agitation assembly; 701. Mounting groove; 702. Agitation diaphragm; 8. Lifting assembly; 801. Lifting plate; 802. Connecting frame; 803. Mounting frame; 804. Screw; 805. Guide rod; 806. Motor; 807. Connecting plate; 808. Spring; 809. Limiting plate. Detailed Implementation

[0029] The technical solutions of the utility model embodiments will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the utility model, and not all embodiments. Based on the embodiments of the utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the utility model.

[0030] In the description of this utility model, it should be understood that the terms "opening", "upper", "lower", "top", "middle", "inner", etc., which indicate orientation or positional relationship, are only for the convenience of describing the utility model and simplifying the description, and do not indicate or imply that the components or elements referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the utility model.

[0031] Please see Figures 1-6 As shown, this utility model is a testing device for pressure gauge production, including a workbench 1, a testing box 2 on the top of the workbench 1, a plurality of cavities 3 inside the testing box 2, a connecting component 4 inside the cavity 3, a gas transport component 5 inside the connecting component 4, a sealing component 6 on the top of the testing box 2, an agitation component 7 on the top of the sealing component 6, and a lifting component 8 at the bottom of the workbench 1, the lifting component 8 being connected to the connecting component 4 and the sealing component 6.

[0032] The connecting component 4 is used to connect with the pressure gauge, the lifting component 8 is used to drive the connecting component 4 and the sealing component 6 to move downward so that the sealing component 6 seals the detection box 2, the gas transport component 5 is used to transport gas into the interior of the pressure gauge, and the agitation component 7 is used to detect the gas pressure inside the detection box 2.

[0033] By installing several pressure gauges on corresponding connecting components 4, and then driving the lifting component 8, the connecting component 4 moves the pressure gauges into several cavities 3. At the same time, the sealing component 6 seals the top of the detection box 2. Then, the gas is transported into the connecting component 4 through the gas transport component 5, so that the gas flows into the pressure gauge under the guidance of the connecting component 4. When the pressure gauge is not well sealed, the gas can flow out from the inside of the pressure gauge. At this time, the air pressure inside the corresponding cavity 3 will increase, so that the agitating component 7 will agitate under the pressure.

[0034] The sealing component 6 allows the multiple cavities 3 inside the test chamber 2 to form a sealed space. The pressure gauge, supported by the connecting component 4, is located inside this sealed space. Simultaneously, the gas transport component 5 transports airflow into the pressure gauge through the connecting component 4. When the overall sealing of the pressure gauge is poor, the airflow inside the pressure gauge can flow into the sealed space, increasing the air pressure inside the sealed space. At the same time, the agitating component 7 can agitate the pressure gauge. This detection method allows the operator to clearly judge the sealing performance of the corresponding pressure gauge through the several agitating components 7, thereby avoiding missed detections when testing the sealing performance of the pressure gauge.

[0035] In one embodiment, the connecting component 4 includes a connecting pipe 401. Multiple connecting pipes 401 are provided corresponding to the cavity 3. The connecting pipes 401 are movably connected to the detection box 2. A sealing sleeve 402 is fixedly connected to the bottom of the inner wall of the detection box 2 corresponding to the connecting pipe 401. The connecting pipe 401 passes through the detection box 2 and is movably connected to the sealing sleeve 402. A threaded groove 403 is provided on the inner wall of the connecting pipe 401.

[0036] By pushing the connecting pipe 401 upwards, it can be moved out of the detection box 2. Then, the threaded tube at the bottom of the pressure gauge is rotated into the connecting pipe 401 through the threaded groove 403, allowing the connecting pipe 401 to support the pressure gauge. The connecting pipe 401 is then moved downwards, allowing the pressure gauge to move into the cavity 3. This design allows the connecting pipe 401 to be raised and lowered without obstruction when rotating the pressure gauge onto it. The sealing sleeve 402 seals the movable connection between the connecting pipe 401 and the detection box 2, ensuring both the normal raising and lowering of the connecting pipe 401 and the airtight seal between the connecting pipe 401 and the detection box 2.

[0037] In one embodiment, the gas transport assembly 5 includes a branch pipe 501, and multiple branch pipes 501 are provided with corresponding connecting pipes 401. The branch pipes 501 are movably connected to the corresponding connecting pipes 401. One end of the branch pipe 501 is fixedly connected to a transport pipe 502. One end of the transport pipe 502 passes through the workbench 1. A support frame 503 is fixedly installed on the inner wall of the workbench 1, and the transport pipe 502 is sleeved inside the support frame 503.

[0038] When the connecting pipe 401 is raised or lowered, the branch pipe 501 can slide inside the connecting pipe 401, and the sealing between the branch pipe 501 and the connecting pipe 401 is high. This arrangement ensures that the connecting pipe 401 and the branch pipe 501 maintain a tight connection while the pipes are raised or lowered. One end of the transport pipe 502 is connected to an external air source. When testing the sealing performance of several pressure gauges, the external air source supplies airflow into the transport pipe 502, and the airflow inside the transport pipe 502 flows into the branch pipes 501. Simultaneously, the airflow inside the branch pipes 501 flows through the connecting pipe 401 into the pressure gauges, and the sealing test begins. The support frame 503 and the worktable 1 cooperate to support the transport pipe 502, thereby ensuring the stability of the transport pipe 502 and the branch pipes 501.

[0039] In one embodiment, the sealing assembly 6 includes a sealing groove 601, which has multiple openings on the top of the detection box 2 corresponding to the cavity 3. A sealing frame 602 is movably connected inside the sealing groove 601, and a sealing plate 603 is fixedly connected to the top of the sealing frame 602.

[0040] The sealing plate 603 can be moved to the top of the test chamber 2, and at the same time, several sealing frames 602 can be moved into the corresponding sealing grooves 601 under the action of the sealing plate 603. This arrangement ensures that the sealing performance of several cavities 3 can be guaranteed after the sealing plate 603 completes the blocking of the test chamber 2, thereby ensuring the accuracy of the sealing performance test of the pressure gauge.

[0041] In one embodiment, the agitation assembly 7 includes a mounting groove 701, which has multiple openings on the sealing plate 603 corresponding to the cavity 3, and an agitation membrane 702 is fixedly connected to the inner wall of the mounting groove 701.

[0042] When the pressure gauge is not properly sealed, the airflow inside the pressure gauge can flow into the corresponding cavity 3. At this time, the air pressure inside the cavity 3 increases, which causes the corresponding diaphragm 702 to agitate. Since the upper side of several cavities 3 is provided with diaphragms 702, no missed detection will occur when testing the sealing performance of several pressure gauges.

[0043] In one embodiment, the lifting assembly 8 includes a lifting plate 801, a plurality of connecting pipes 401 are disposed on the lifting plate 801, a connecting frame 802 is fixedly installed on the lifting plate 801, the connecting frame 802 passes through the workbench 1 and is fixedly installed together with the sealing plate 603, an mounting frame 803 is fixedly installed on the inner wall of the workbench 1, a screw 804 is rotatably connected to the top of the mounting frame 803, the screw 804 is threadedly connected to the lifting plate 801, a guide rod 805 is fixedly connected to the top of the mounting frame 803, the guide rod 805 is movably connected to the lifting plate 801, and a motor 806 is fixedly installed at the bottom of the mounting frame 803, the output end of the motor 806 is fixedly connected together with the screw 804.

[0044] By driving the motor 806, the screw 804 rotates, which in turn moves the lifting plate 801 up and down. The lifting plate 801 then moves several connecting pipes 401 up and down together. Simultaneously, the lifting plate 801, through the connecting frame 802, moves the sealing plate 603 up and down. This arrangement allows the motor 806 to be driven directly when testing the pressure gauge, enabling the sealing plate 603 and connecting pipes 401 to move upwards together. This prevents the sealing plate 603 from obstructing the top of the testing box 2, and allows the tops of the connecting pipes 401 to move directly out of the testing box 2, making operation convenient. When the lifting plate 801 moves up and down, the guide rod 805 guides it, ensuring high stability during the movement.

[0045] In one embodiment, the connecting pipe 401 is movably connected to the lifting plate 801, a connecting plate 807 is fixedly connected to the outer surface of the connecting pipe 401, a spring 808 is fixedly connected between the bottom of the connecting plate 807 and the top of the lifting plate 801, and a limit plate 809 is fixedly connected to both the top and bottom of the connecting pipe 401.

[0046] The lifting plate 801, via the spring 808 and connecting plate 807, can move the connecting pipe 401 upwards. Once the connecting plate 807 contacts the bottom of the testing box 2, the lifting plate 801 can continue to move upwards. At this time, the lifting plate 801 compresses the spring 808, and the connecting pipe 401 begins to slide on the lifting plate 801, thus increasing the distance between the top of the connecting pipe 401 and the sealing plate 603. This design ensures that the sealing plate 603 will not obstruct the pressure gauge when it is installed on the connecting pipe 401. After the connecting pipe 401 moves into the testing box 2, the upper limiting plate 809 contacts the sealing sleeve 402, while the lower limiting plate 809 contacts the lifting plate 801. This prevents the connecting pipe 401 from wobbling under the elastic force of the spring 808 when the pressure gauge is being tested.

[0047] Through the above technical solution, 1. The sealing component 6 allows the multiple cavities 3 inside the test chamber 2 to form a sealed space, and the pressure gauge, supported by the connecting component 4, can be located inside this sealed space. Simultaneously, the gas transport component 5 can transport airflow into the pressure gauge through the connecting component 4. When the overall sealing of the pressure gauge is poor, the airflow inside the pressure gauge can flow into the sealed space, increasing the air pressure inside the sealed space. At the same time, the agitating component 7 can agitate. This detection method allows the operator to clearly judge the sealing performance of the corresponding pressure gauge through several agitating components 7, thus avoiding missed detections during pressure gauge sealing performance testing; 2. The motor 806 and screw 804 can move the lifting plate 801 upwards. When the lifting plate 801 drives several connecting pipes... After 401 moves upward and the connecting plate 807 contacts the bottom of the test box 2, the lifting plate 801 can drive the sealing plate 603 to continue moving upward through the connecting frame 802. At this time, the lifting plate 801 squeezes the spring 808, and the connecting pipe 401 begins to slide on the lifting plate 801, thereby increasing the distance between the top of the connecting pipe 401 and the sealing plate 603. This setting ensures that the sealing plate 603 will not cause obstruction when the pressure gauge is installed on the connecting pipe 401. At the same time, when the connecting pipe 401 drives the pressure gauge to move into the interior of the test box 2, the distance between the sealing plate 603 and the pressure gauge is smaller, thereby making the space formed between the sealing plate 603, the test box 2 and the cavity 3 smaller. This allows the diaphragm 702 to change more significantly when the pressure gauge is tested and the pressure gauge's sealing performance is not high.

[0048] In the description of this specification, references to terms such as "an embodiment," "example," "specific example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the utility model. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0049] The preferred embodiments of the utility model disclosed above are merely illustrative of the utility model. These preferred embodiments do not exhaustively describe all details, nor do they limit the utility model to the specific implementations described. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of the utility model, thereby enabling those skilled in the art to better understand and utilize it. The utility model is limited only by the claims and their full scope and equivalents.

Claims

1. A testing device for pressure gauge production, comprising a workbench (1), characterized in that, The top of the workbench (1) is provided with a detection box (2), the inside of the detection box (2) is provided with several cavities (3), the inside of the cavity (3) is provided with a connecting component (4), the inside of the connecting component (4) is provided with a gas transport component (5), the top of the detection box (2) is provided with a sealing component (6), the top of the sealing component (6) is provided with a pulsating component (7), the bottom of the workbench (1) is provided with a lifting component (8), and the lifting component (8) is connected to the connecting component (4) and the sealing component (6). The connecting component (4) is used to connect with the pressure gauge. The lifting component (8) is used to drive the connecting component (4) and the sealing component (6) to move downward so that the sealing component (6) seals the detection box (2). The gas transport component (5) is used to transport gas into the interior of the pressure gauge. The agitating component (7) is used to detect the gas pressure inside the detection box (2).

2. The testing equipment for pressure gauge production according to claim 1, characterized in that, The connecting assembly (4) includes a connecting pipe (401). Multiple connecting pipes (401) are provided corresponding to the cavity (3). The connecting pipes (401) are movably connected to the detection box (2). A sealing sleeve (402) is fixedly connected to the bottom of the inner wall of the detection box (2) corresponding to the connecting pipe (401). The connecting pipe (401) passes through the detection box (2) and is movably connected to the sealing sleeve (402). A threaded groove (403) is provided on the inner wall of the connecting pipe (401).

3. The testing equipment for pressure gauge production according to claim 2, characterized in that, The gas transport assembly (5) includes a branch pipe (501), and multiple branch pipes (501) are provided with corresponding connecting pipes (401). The branch pipe (501) is movably connected to the corresponding connecting pipe (401). One end of the branch pipe (501) is fixedly connected to a transport pipe (502). One end of the transport pipe (502) passes through the workbench (1). A support frame (503) is fixedly installed on the inner wall of the workbench (1). The transport pipe (502) is sleeved inside the support frame (503).

4. The testing equipment for pressure gauge production according to claim 3, characterized in that, The sealing assembly (6) includes a sealing groove (601), and multiple sealing grooves (601) are provided on the top of the detection box (2) corresponding to the cavity (3). A sealing frame (602) is movably connected inside the sealing groove (601), and a sealing plate (603) is fixedly connected to the top of the sealing frame (602).

5. The testing equipment for pressure gauge production according to claim 4, characterized in that, The agitation assembly (7) includes a mounting groove (701), and multiple mounting grooves (701) are provided on the sealing plate (603) corresponding to the cavity (3). An agitation membrane (702) is fixedly connected to the inner wall of the mounting groove (701).

6. The testing equipment for pressure gauge production according to claim 4, characterized in that, The lifting assembly (8) includes a lifting plate (801), a plurality of connecting pipes (401) are disposed on the lifting plate (801), a connecting frame (802) is fixedly installed on the lifting plate (801), the connecting frame (802) passes through the workbench (1) and is fixedly installed together with the sealing plate (603), an mounting frame (803) is fixedly installed on the inner wall of the workbench (1), a screw (804) is rotatably connected to the top of the mounting frame (803), the screw (804) is threadedly connected to the lifting plate (801), a guide rod (805) is fixedly connected to the top of the mounting frame (803), the guide rod (805) is movably connected to the lifting plate (801), and a motor (806) is fixedly installed at the bottom of the mounting frame (803), the output end of the motor (806) is fixedly connected together with the screw (804).

7. The testing equipment for pressure gauge production according to claim 6, characterized in that, The connecting pipe (401) is movably connected to the lifting plate (801). A connecting plate (807) is fixedly connected to the outer surface of the connecting pipe (401). A spring (808) is fixedly connected between the bottom of the connecting plate (807) and the top of the lifting plate (801). Limiting plates (809) are fixedly connected to both the top and bottom of the connecting pipe (401).

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