Testing device for detecting pressure maintaining performance of pressure regulating valve

Abstract

The utility model discloses a testing device for detecting the pressure maintaining performance of a pressure regulating valve, which relates to the technical field of pressure regulating valve detection and comprises a machine body, a plurality of groups of die holders for bearing the pressure regulating valve are respectively arranged in the machine body, the input end of any group of die holder is connected with an air compressor through an air pipe, and the output end of the die holder is connected with a barometer through an air pipe. The barometer is arranged on the surface of the body; a plurality of sets of telescopic air cylinders are arranged in the machine body and matched with the die bases, and the output ends of the telescopic air cylinders are fixedly connected with pressing dies respectively. The beneficial effects are that a plurality of pressure regulating valves can be tested at the same time, compared with a traditional one-by-one manual test, the test time is greatly shortened, each test station can independently carry out a pressure maintaining performance test without mutual interference, efficient operation of batch tests is realized, the test precision is high, continuous and stable work can be realized, and the test efficiency is improved. The accuracy and consistency of testing are guaranteed, the quality and efficiency of batch testing are improved, and the market application range is wide.

Description

Technical Field

[0001] This utility model relates to the field of pressure regulating valve testing technology, specifically, to a testing device for testing the pressure holding performance of pressure regulating valves. Background Technology

[0002] Pressure regulating valves are primarily used to control pressure in systems, maintaining it within a set range. They typically regulate pressure by adjusting the valve opening to control the flow rate of fluid (gas or liquid). For example, in a hydraulic system, when the system pressure rises above a set value, the pressure regulating valve reduces the valve opening, decreasing the flow rate of hydraulic oil and lowering the pressure; conversely, when the pressure decreases, it increases the valve opening, increasing the flow rate and raising the pressure.

[0003] In many industrial applications and equipment, pressure holding performance is crucial. For example, in injection molding machines, the pressure holding stage requires maintaining stable pressure inside the mold to ensure the quality of plastic products and prevent defects such as shrinkage marks and deformation. In hydraulic clamping devices, stable pressure ensures that the workpiece is firmly clamped, ensuring the safety and accuracy of the processing.

[0004] Currently, traditional methods for testing pressure-holding performance are typically manual, involving connecting a pressure gauge and observing the pressure drop over a specified time. In some simple hydraulic or pneumatic systems, operators first adjust the system pressure to the test pressure, then shut off the pressure source, use a stopwatch to time the readings, and record the pressure gauge readings at predetermined intervals. However, this manual reading method is susceptible to human error, such as delays in reading time and errors in measurement, making it difficult to meet accuracy requirements. Furthermore, the traditional testing process relies on manual operation, resulting in low efficiency. Each test requires manual pressure adjustment, valve closure, and data recording, which is extremely time-consuming for batch testing of pressure regulating valves. Moreover, the lack of automation prevents continuous long-term monitoring, and manual operation cannot guarantee the continuity and accuracy of testing, failing to meet the needs of enterprise production.

[0005] There are currently no effective solutions to the problems in the relevant technologies. Utility Model Content

[0006] In view of the problems in the related technologies, the purpose of this utility model is to propose a testing device for detecting the pressure holding performance of a pressure regulating valve, so as to overcome the above-mentioned technical problems existing in the existing related technologies.

[0007] The technical solution of this utility model is implemented as follows:

[0008] A testing device for detecting the pressure holding performance of a pressure regulating valve includes: a body, wherein the body is provided with a plurality of sets of mold seats for supporting the pressure regulating valve, the input end of any set of mold seats is connected to an air compressor through an air pipe, and the output end of the mold seat is connected to a pressure gauge through an air pipe, the pressure gauge being disposed on the surface of the body;

[0009] The machine body is equipped with several sets of telescopic cylinders that are adapted to the mold base. The output ends of the telescopic cylinders are respectively fixedly connected to the pressing molds, and the pressing molds are respectively adapted to the mold base.

[0010] A control panel is provided on the surface of the machine body and on one side of the pressure gauge. The control panel is electrically connected to the pressure gauge, the air compressor and the telescopic cylinder via wires.

[0011] Furthermore, the machine body is provided with an assembly frame, which is sleeved on the mold base, and the telescopic cylinder is fixedly assembled on the top of the assembly frame, and the pressing mold is movably inserted into the assembly frame.

[0012] Furthermore, the assembly frame is provided with several slide rails on one side, and a slide plate is slidably mounted on the slide rails, with the pressing mold inserted inside the slide plate.

[0013] Furthermore, a number of infrared sensors are provided on one side of the assembly frame. The infrared sensors are adapted to the mold base and are electrically connected to the control panel via wires.

[0014] Furthermore, a contact-type grating displacement sensor is provided on one side of the machine body. The contact-type grating displacement sensor is adapted to the mold base, and the contact-type grating displacement sensor is electrically connected to the control panel through a wire.

[0015] Furthermore, the mold base is at least four sets.

[0016] The beneficial effects of this utility model are:

[0017] This invention pre-places the pressure regulating valve on the mold base and uses a telescopic cylinder to drive the mold to cooperate with the mold base to achieve the pressure regulating valve's limit position. Simultaneously, the control panel, in conjunction with an air compressor and pressure gauge, completes the pressure holding performance test of the pressure regulating valve. This not only allows for the simultaneous testing of multiple pressure regulating valves, but also significantly shortens the testing time compared to traditional manual testing. Each testing station can independently perform pressure holding performance testing without interference, achieving efficient batch testing. Furthermore, it offers high testing accuracy and can operate continuously and stably, ensuring the accuracy and consistency of the tests, improving the quality and efficiency of batch testing, and has a wide range of market applications.

[0018] Other features and advantages of this invention will be set forth in the description which follows, and will be apparent in part from the description, or may be learned by practicing the invention. The objectives and other advantages of this invention are realized and obtained through the structures particularly pointed out in the description and the accompanying drawings.

[0019] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, preferred embodiments are described below in detail with reference to the accompanying drawings. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this 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 structure of a testing device for detecting the pressure holding performance of a pressure regulating valve according to an embodiment of the present utility model;

[0022] Figure 2 This is a schematic diagram of the assembly frame of a test device for detecting the pressure holding performance of a pressure regulating valve according to an embodiment of the present invention.

[0023] In the picture:

[0024] 1. Body; 2. Mold base; 3. Pressure gauge; 4. Telescopic cylinder; 5. Press mold; 6. Control panel; 7. Assembly rack; 8. Infrared sensor; 9. Slide rail; 10. Slide plate; 11. Contact grating displacement sensor. Detailed Implementation

[0025] 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. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model are within the protection scope of the present utility model.

[0026] According to an embodiment of the present invention, a testing device for detecting the pressure-holding performance of a pressure regulating valve is provided.

[0027] like Figures 1-2 As shown, a testing device for detecting the pressure holding performance of a pressure regulating valve includes: a body 1, and a plurality of mold seats 2 for supporting the pressure regulating valve are respectively provided inside the body 1. The input end of any one set of mold seats 2 is connected to an air compressor through an air pipe, and the output end of the mold seat 2 is connected to a pressure gauge 3 through an air pipe. The pressure gauge 3 is set on the surface of the body 1.

[0028] The body 1 is equipped with several sets of telescopic cylinders 4 in the mold base 2. The output end of the telescopic cylinder 4 is fixedly connected to the pressing mold 5, and the pressing mold 5 is adapted to the mold base 2 respectively.

[0029] A control panel 6 is provided on the surface of the body 1 and on one side of the pressure gauge 3. The control panel 6 is electrically connected to the pressure gauge 3, the air compressor and the telescopic cylinder 4 via wires.

[0030] Among them, the mold base 2 has at least four sets.

[0031] In addition, the machine body 1 is provided with an assembly frame 7, which is sleeved on the mold base 2, and the telescopic cylinder 4 is fixedly assembled on the top of the assembly frame 7. The pressing mold 5 is movably inserted into the assembly frame 7. Among them, a number of slide rails 9 are provided on one side of the assembly frame 7, and slide plates 10 are slidably mounted on the slide rails 9. The pressing mold 5 is inserted into the slide plates 10.

[0032] In this technical solution, the mounting frame 7 can be used to support the telescopic cylinder 4, while the slide plate 10 slides along the slide rail 9 to achieve the stability and reliability of the telescopic cylinder 4 transmission.

[0033] In addition, several infrared sensors 8 are provided on one side of the assembly frame 7. The infrared sensors 8 are adapted to the mold base 2, and the infrared sensors 8 are electrically connected to the control panel 6 through wires.

[0034] Specifically, in this technical solution, the infrared sensor 8 can be used to detect whether a pressure regulating valve is placed in the mold base 2, thereby improving the reliability of product testing.

[0035] In addition, a contact grating displacement sensor 11 is provided on one side of the body 1. The contact grating displacement sensor 11 is adapted to the mold base 2, and the contact grating displacement sensor 11 is electrically connected to the control panel 6 through a wire.

[0036] In this technical solution, the contact grating displacement sensor 11 can be used to improve the safety of testing during the testing process. If an employee operates it improperly and accidentally enters the dangerous area of ​​the tooling, the tooling can be stopped urgently through the control panel 6, thereby improving safety.

[0037] Using the above solution, the pressure regulating valve is pre-placed on the mold base 2, and the pressure mold 5 is driven by the telescopic cylinder 4 to cooperate with the mold base 2 to achieve the pressure regulating valve limit. At the same time, the pressure holding performance test of the pressure regulating valve is completed by the control panel 6 in conjunction with the air compressor and pressure gauge 3. Not only can multiple pressure regulating valves be tested at the same time, but compared with the traditional manual testing one by one, the testing time is greatly shortened. Each test station can independently perform pressure holding performance testing without interference, realizing efficient operation of batch testing. Moreover, the test accuracy is high, and it can work continuously and stably, ensuring the accuracy and consistency of the test, improving the quality and efficiency of batch testing, and has a wide range of market applications.

[0038] Specifically, the aforementioned air compressor (not shown in the diagram) is an external air compressor. It is turned on via control panel 6, compressing air and sending it to the pressure regulating valve via the input. Control panel 6 adjusts the pressure regulating valve to reach the set pressure, and the reading on pressure gauge 3 is recorded. The air compressor is then turned off, and the air supply is cut off using a one-way valve (not shown in the diagram). The change in pressure gauge 3 is observed within a specified time, such as 30 minutes. If the pressure drop is within the range specified in the product standard, for example, the drop does not exceed 10% of the initial pressure, it indicates that the pressure regulating valve's pressure-holding performance is qualified.

[0039] In summary, the following effects can be achieved by using the above-mentioned technical solution of this utility model: The pressure regulating valve is pre-placed on the mold base 2, and the pressure mold 5 is driven by the telescopic cylinder 4 to cooperate with the mold base 2 to achieve the pressure regulating valve's limit position. Simultaneously, the pressure holding performance test of the pressure regulating valve is completed through the control panel 6 in conjunction with the air compressor and pressure gauge 3. This not only allows for simultaneous testing of multiple pressure regulating valves, but also significantly shortens the testing time compared to traditional manual testing. Each testing station can independently perform pressure holding performance testing without interference, achieving efficient batch testing. Furthermore, the testing accuracy is high, and it can operate continuously and stably, ensuring the accuracy and consistency of the test, improving the quality and efficiency of batch testing, and broadening its market application range.

[0040] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A testing device for detecting the pressure-holding performance of a pressure regulating valve, comprising: The body (1) is characterized in that a plurality of mold bases (2) for carrying pressure regulating valves are respectively provided inside the body (1), the input end of any group of mold bases (2) is connected to an air compressor through an air pipe, and the output end of the mold base (2) is connected to a pressure gauge (3) through an air pipe, and the pressure gauge (3) is set on the surface of the body (1). The body (1) is equipped with several sets of telescopic cylinders (4) adapted to the mold base (2). The output ends of the telescopic cylinders (4) are respectively fixedly connected to the pressure molds (5), and the pressure molds (5) are respectively adapted to the mold base (2). The body (1) has a control panel (6) on its surface and located on one side of the pressure gauge (3). The control panel (6) is electrically connected to the pressure gauge (3), the air compressor and the telescopic cylinder (4) via wires.

2. The testing device for detecting the pressure-holding performance of a pressure regulating valve according to claim 1, characterized in that, The machine body (1) is provided with an assembly frame (7), which is sleeved on the mold base (2), and the telescopic cylinder (4) is fixedly assembled on the top of the assembly frame (7), and the pressure mold (5) is movably inserted into the assembly frame (7).

3. The testing device for detecting the pressure-holding performance of a pressure regulating valve according to claim 2, characterized in that, The assembly frame (7) is provided with several slide rails (9) on one side, and slide rails (9) are slidably provided with slide plates (10), and the mold (5) is inserted into the slide plates (10).

4. The testing device for detecting the pressure-holding performance of a pressure regulating valve according to claim 2, characterized in that, The assembly frame (7) is provided with several infrared sensors (8) on one side. The infrared sensors (8) are adapted to the mold base (2) and are electrically connected to the control panel (6) through wires.

5. A testing device for detecting the pressure-holding performance of a pressure regulating valve according to claim 1, characterized in that, A contact grating displacement sensor (11) is provided on one side of the body (1). The contact grating displacement sensor (11) is adapted to the mold base (2), and the contact grating displacement sensor (11) is electrically connected to the control panel (6) through a wire.

6. The testing device for detecting the pressure-holding performance of a pressure regulating valve according to claim 1, characterized in that, The mold base (2) consists of at least four sets.

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