Flat gate valve performance detection device

Abstract

The invention discloses a flat gate valve performance detection device, and belongs to the technical field of gate valve detection devices, the flat gate valve performance detection device comprises a detection table, the top of the detection table is provided with a caliber detection mechanism, and the bottom of the detection table is provided with an air tightness auxiliary detection mechanism; according to the invention, through the arranged aperture detection mechanism, the multi-station alternate conveying detection of the flat gate valve body is realized, the detection efficiency and the automation level are significantly improved, and through a mechanical feedback structure formed by the extrusion plate, the reset spring, the push type trigger switch and other components, the detection precision can be greatly improved on the premise of no complex sensor. Structural elasticity changes are matched with displacement triggering, structural abnormity of the gate valve to be detected is accurately judged, sound-light alarm is given out, dependence of a detection system on circuit stability is reduced, meanwhile, the anti-interference capacity and the capacity of adapting to severe industrial environments of the device are enhanced, alarm response is fast, structural configuration is stable, and batched flat valve body rotary detection is facilitated.

Description

Technical Field

[0001] This invention belongs to the technical field of gate valve testing devices, and particularly relates to a performance testing device for flat gate valves. Background Technology

[0002] Flat gate valves are a common fluid control element in industrial pipeline systems, widely used in petroleum, chemical, power, water treatment and other fields. Their main function is to cut off or connect pipeline media. Due to their structural characteristics, flat gate valves have high requirements for sealing performance, structural dimensions and installation accuracy during use. Any slight manufacturing deviation or assembly defect may lead to safety hazards such as leakage, jamming or failure to close. Therefore, flat gate valves must undergo strict performance testing before leaving the factory to ensure that all parameters meet design specifications and industry standards.

[0003] Existing performance testing of flat gate valves typically employs a combination of manual operation and independent testing stations. For example, diameter measurement and sealing tests are often conducted separately, resulting in problems such as process separation, low efficiency, and unstable testing accuracy. In addition, some tests rely on manual visual inspection or manual measurement, which is not only labor-intensive but also easily influenced by the operator's experience, leading to highly subjective test results. This makes it difficult to meet the industrial needs of large-scale, standardized testing. Furthermore, traditional sealing performance testing often uses rigid fixtures for workpiece positioning, which can easily cause scratches on the surface of the flat gate valve being tested or unstable clamping, affecting the accuracy of subsequent tests.

[0004] Based on this, the present invention designs a flat gate valve performance testing device to solve the above problems. Summary of the Invention

[0005] The purpose of this invention is to provide a performance testing device for flat gate valves, which addresses the problems of low efficiency, low accuracy, and easy damage to workpieces caused by manual inspection.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: A performance testing device for a flat gate valve includes a testing platform, with a diameter testing mechanism at the top and an airtightness auxiliary testing mechanism at the bottom. A caliber testing mechanism includes a compression plate, a return spring, a connecting plate, a trigger rod, and a base. The bottom end of the return spring is fixedly connected to the top end of the base, the top end of the return spring is fixedly connected to the bottom end of the compression plate, the top end of the trigger rod is fixedly connected to the bottom end of the compression plate, and one end of the connecting plate is attached to the top of the compression plate. An airtightness auxiliary testing mechanism includes an electric push rod, a gas transfer pump, a suction cup, and a testing groove. The free end of the electric push rod is fixedly connected to the top end of the gas transfer pump, and the output end of the gas transfer pump is fixedly connected to the top end of the suction cup.

[0007] As a further description of the above technical solution: The bottom of the testing platform is fixedly connected to a motor, and two transmission wheels are provided on one side of the motor. A transmission belt is sleeved between the two transmission wheels. The top of the testing platform is fixedly connected to the performance testing device body.

[0008] As a further description of the above technical solution: The output end of the motor is fixedly connected to the inner side of one of the transmission wheels, and the top of the other transmission wheel is fixedly connected to a transmission plate, the bottom end of which is rotatably connected to the top of the testing platform.

[0009] As a further description of the above technical solution: A rotating plate is fixedly connected to the top of the transmission plate, and an audible and visual alarm is fixedly connected to the top of the rotating plate. The bottom of the base is fixedly connected to the top of the rotating plate.

[0010] As a further description of the above technical solution: The top of the rotating plate is a flat gate valve body, a spring rod is fixedly connected to the outside of the base, a detection plate is fixedly connected to one end of the spring rod, and the bottom end of the connecting plate is fixedly connected to the top of the detection plate.

[0011] As a further description of the above technical solution: A push-button trigger switch is fixedly embedded at the top of the base. The push-button trigger switch is electrically connected to the sound and light alarm. A rubber plate is fixedly connected to the bottom of the trigger rod. The rubber plate is placed on top of the push-button trigger switch.

[0012] As a further description of the above technical solution: The detection slot is fixedly connected to the inner wall of the processing table, a guide rail is fixedly connected to the top of the detection table, and a support is fixedly connected to one side of the top of the detection table.

[0013] As a further description of the above technical solution: A sliding plate is slidably connected between the support and the first guide rail. The top of the sliding plate is fixedly connected to the second guide rail, and the outside of the support is fixedly connected to the second motor.

[0014] As a further description of the above technical solution: The output end of the second motor is fixedly connected to a lead screw, one end of which is rotatably connected to the inner side of the support, and the middle part of the lead screw is slidably connected to the sliding plate. The gas transfer pump is vertically slidably connected to the inner side of the second guide rail.

[0015] As a further description of the above technical solution: An airtightness testing pump is fixedly connected to the bottom of the testing platform. A connecting pipe is fixedly connected to the output end of the airtightness testing pump. One end of the connecting pipe passes through the testing groove and is fixedly connected to an installation pipe.

[0016] In summary, due to the adoption of the above technical solution, the beneficial effects of the present invention are: 1. In this invention, the caliber detection mechanism enables multi-station alternating conveying and detection of the flat gate valve body, significantly improving detection efficiency and automation level. Through a mechanical feedback structure composed of components such as a squeezing plate, a return spring, and a push-button trigger switch, it can accurately determine structural abnormalities in the gate valve under test and issue audible and visual alarms based on structural elastic changes and displacement triggering, without the need for complex sensors. This reduces the detection system's dependence on circuit stability and enhances the device's anti-interference capability and adaptability to harsh industrial environments. Its alarm response is rapid, its structural configuration is stable, and it facilitates the alternating detection of batch flat valves. The bottom buffer bracket absorbs excess impact, protecting the internal detection structure from damage and extending the device's service life. It is compatible with products of different materials and specifications, making it widely applicable.

[0017] 2. In this invention, an airtightness auxiliary testing mechanism is set up. A motor and a lead screw control the sliding plate to achieve high-precision lateral movement along a double-guide rail structure. An electric push rod controls the vertical movement of the adsorption testing mechanism, establishing a three-dimensional adjustable flexible testing system. This effectively ensures accurate alignment and stable insertion of the airtightness testing position. The suction cup adopts a soft adsorption design, which, while fixing the workpiece, avoids structural damage to the flat gate valve body caused by traditional clamps, ensuring the reliability of non-destructive testing. The closed air injection path formed between the airtightness testing pump and the installation pipe can simulate real application conditions and reliably determine the internal sealing performance of the gate valve. This system has the advantages of simple operation, precise control, high degree of automation, and good repeatability. It can achieve highly sensitive leakage detection and defect investigation. At the same time, through the continuous linkage of the front-end alarm screening mechanism and the back-end airtightness verification mechanism, unqualified products are prevented from entering the sealing testing process, saving testing resources and improving overall testing efficiency and reliability. It is particularly suitable for the high-standard inspection of flat gate valve bodies before they leave the factory. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the main structure of a flat gate valve performance testing device proposed in this invention.

[0019] Figure 2 This is a schematic diagram of the back side of a flat gate valve performance testing device proposed in this invention.

[0020] Figure 3 This is a schematic diagram of the transmission plate portion of a flat gate valve performance testing device proposed in this invention.

[0021] Figure 4 This is a schematic diagram of the motor portion of a flat gate valve performance testing device proposed in this invention.

[0022] Figure 5 This is a schematic diagram of a portion of the guide rail of a flat gate valve performance testing device proposed in this invention.

[0023] Figure 6 This invention provides a performance testing device for flat gate valves. Figure 5 Enlarged view of point A in the middle.

[0024] Figure 7 This invention provides a performance testing device for flat gate valves. Figure 5 Enlarged at point B in the middle.

[0025] Figure 8 This is a schematic diagram of the base portion of a flat gate valve performance testing device proposed in this invention.

[0026] Figure 9 This is a schematic diagram of the connecting plate portion of a flat gate valve performance testing device proposed in this invention.

[0027] Figure 10 This invention provides a performance testing device for flat gate valves. Figure 9 Enlarged view of point C.

[0028] Legend: 1. Testing platform; 2. Flat gate valve body; 3. Diameter testing mechanism; 301. Rotating plate; 302. Motor 1; 303. Transmission wheel; 304. Transmission belt; 305. Audible and visual alarm; 306. Transmission plate; 307. Spring rod; 308. Trigger rod; 309. Rubber plate; 310. Press-type trigger switch; 311. Connecting plate; 312. Testing plate; 313. Return spring; 314. Squeezing plate; 315. Base; 4. Air tightness auxiliary testing mechanism; 401. Guide rail 1; 402. Guide rail 2; 403. Motor 2; 404. Support; 405. Lead screw; 406. Electric push rod; 407. Gas transfer pump; 408. Suction cup; 409. Testing groove; 410. Mounting pipe; 411. Air tightness testing pump; 412. Connecting pipe; 413. Sliding plate; 5. Performance testing device body. Detailed Implementation

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

[0030] Please see Figures 1-10 The present invention provides a technical solution: a flat gate valve performance testing device, including a testing platform 1, a diameter testing mechanism 3 on the top of the testing platform 1, and an airtightness auxiliary testing mechanism 4 on the bottom of the testing platform 1. The caliber detection mechanism 3 includes a pressing plate 314, a return spring 313, a connecting plate 311, a trigger rod 308, and a base 315. The bottom end of the return spring 313 is fixedly connected to the top end of the base 315, the top end of the return spring 313 is fixedly connected to the bottom end of the pressing plate 314, the top end of the trigger rod 308 is fixedly connected to the bottom end of the pressing plate 314, and one end of the connecting plate 311 is attached to the top of the pressing plate 314. The airtightness auxiliary testing mechanism 4 includes an electric push rod 406, a gas transfer pump 407, a suction cup 408, and a testing groove 409. The free end of the electric push rod 406 is fixedly connected to the top end of the gas transfer pump 407, and the output end of the gas transfer pump 407 is fixedly connected to the top end of the suction cup 408.

[0031] Specifically, such as Figure 3 , Figure 4 and Figures 8-10 As shown, a motor 302 is fixedly connected to the bottom of the testing platform 1. Two transmission wheels 303 are provided on one side of the motor 302. A transmission belt 304 is sleeved between the two transmission wheels 303. The performance testing device body 5 is fixedly connected to the top of the testing platform 1.

[0032] In the above components, motor 302 serves as the transmission core, driving two transmission wheels 303 to rotate synchronously via transmission belt 304.

[0033] Specifically, such as Figure 3 , Figure 4 and Figures 8-10 As shown, the output end of motor 302 is fixedly connected to the inner side of one of the transmission wheels 303, and the top end of the other transmission wheel 303 is fixedly connected to a transmission plate 306, and the bottom end of the transmission plate 306 is rotatably connected to the top end of the testing table 1.

[0034] Specifically, such as Figure 3 , Figure 4 and Figures 8-10As shown, a rotating plate 301 is fixedly connected to the top of the transmission plate 306, and an audible and visual alarm 305 is fixedly connected to the top of the rotating plate 301. The bottom of the base 315 is fixedly connected to the top of the rotating plate 301.

[0035] In the aforementioned components, the base 315 serves as the direct bearing platform for the workpiece being inspected, enabling it to rise and fall synchronously with the rotating plate 301.

[0036] Specifically, such as Figure 3 , Figure 4 and Figures 8-10 As shown, a flat gate valve body 2 is placed on the top of the rotating plate 301, a spring rod 307 is fixedly connected to the outside of the base 315, a detection plate 312 is fixedly connected to one end of the spring rod 307, and the bottom end of the connecting plate 311 is fixedly connected to the top of the detection plate 312.

[0037] In the aforementioned components, the rubber plate 309 moves downward under the pressure to touch the trigger switch, triggering an electrical signal that is transmitted to the audible and visual alarm 305, forming an instant feedback mechanism. The rubber plate 309 not only serves as a soft contact buffer but also prevents accidental contact and damage to the switch.

[0038] Specifically, such as Figure 3 , Figure 4 and Figures 8-10 As shown, a push-button trigger switch 310 is fixedly embedded at the top of the base 315. The push-button trigger switch 310 is electrically connected to the sound and light alarm 305. A rubber plate 309 is fixedly connected to the bottom of the trigger rod 308. The rubber plate 309 is placed on top of the push-button trigger switch 310.

[0039] Specifically, such as Figure 1 , Figure 2 and Figures 5-7 As shown, the detection groove 409 is fixedly connected to the inner wall of the processing table, the top of the detection table 1 is fixedly connected to the guide rail 401, and the top side of the detection table 1 is fixedly connected to the support 404.

[0040] In the above components, the detection groove 409 serves as the receiving structure for airtightness testing. Its inner wall is fixedly connected to the processing table to receive and seal the tested flat gate valve body 2. The guide rail 401 provides a sliding constraint path, and the support 404 provides a fixed installation foundation for the subsequent motor 403 and sliding structure.

[0041] Specifically, such as Figure 1 , Figure 2 and Figures 5-7 As shown, a sliding plate 413 is slidably connected between the support 404 and the guide rail 401. The top of the sliding plate 413 is fixedly connected to the guide rail 402, and the outer side of the support 404 is fixedly connected to the motor 403.

[0042] In the above components, motor 2 403 serves as a lateral movement actuator, which drives sliding plate 413 to slide in guide rail 1 401 via lead screw 405.

[0043] Specifically, such as Figure 1 , Figure 2 and Figures 5-7 As shown, a lead screw 405 is fixedly connected to the output end of motor 403. One end of the lead screw 405 is rotatably connected to the inner side of support 404. The middle part of the lead screw 405 is slidably connected to sliding plate 413. Gas transfer pump 407 is vertically slidably connected to the inner side of guide rail 402.

[0044] In the aforementioned components, motor 403 converts rotational motion into sliding motion via lead screw 405, driving sliding plate 413 to achieve precise positioning. Gas transfer pump 407 can move up and down in guide rail 402, working with electric push rod 406 to achieve precise descent and recovery of adsorption components, meeting the spatial requirements and operational accuracy of airtightness testing.

[0045] Specifically, such as Figure 1 , Figure 2 and Figures 5-7 As shown, an airtightness testing pump 411 is fixedly connected to the bottom of the testing platform 1. A connecting pipe 412 is fixedly connected to the output end of the airtightness testing pump 411. One end of the connecting pipe 412 passes through the testing groove 409 and is fixedly connected to the installation pipe 410.

[0046] Among the above components, the air tightness test pump 411 provides the test gas source for the entire sealing performance test. It injects gas into the mounting pipe 410 through the connecting pipe 412. The mounting pipe 410 is pre-aligned with the flow channel of the flat gate valve body 2 to realize constant pressure gas injection test of its internal closed cavity, which can be used to determine whether there is leakage or pressure difference abnormality.

[0047] Working principle: During use, a motor 302 is installed at the bottom of the testing platform 1. The output end of the motor 302 is connected to the transmission belt 304 through the transmission wheel 303, which drives the transmission plate 306 connected to it to rotate. The top of the transmission plate 306 is equipped with a rotating plate 301, which can carry multiple flat gate valve bodies 2 to be tested. By rotating in sequence, they are sent one by one to the bottom of the performance testing device body 5, realizing the sequential testing of each gate valve. When a flat gate valve body 2 rotates to the bottom of the testing device, the performance testing device body 5 begins to perform the caliber compliance test. The core structure of the testing device body is the caliber testing mechanism 3 set at the top of the testing platform 1. This mechanism includes a pressing plate 314, a return spring 313, a connecting plate 311, a trigger rod 308, and a rubber plate. 309, together with key components such as the push-button trigger switch 310, constitutes a detection feedback system based on pressure displacement and elastic rebound. During the detection process, the detection device automatically lowers the extrusion plate 314 to close to both sides of the tested flat gate valve body 2 via a mechanical or electric guide structure and applies initial detection pressure. If the diameter of the flat gate valve body 2 exceeds the standard range, or if there is structural misalignment or deformation, it will generate an upward thrust or lateral interference force on the upper extrusion plate 314, causing the extrusion plate 314, which is originally supported at a predetermined height by the return spring 313, to shift downward. During the downward movement of the extrusion plate 314, it drives the trigger rod 308, which is rigidly connected to its bottom, to move downward synchronously, thereby driving the rubber plate 309 at the bottom of the trigger rod 308 to move downward. The push-button trigger switch 310 generates pressing force. When the pressure of the rubber plate 309 reaches the preset value, the trigger switch is activated, immediately connecting to the audible and visual alarm 305 located on the top of the rotating plate 301 via an electrical signal. This alarm signal alerts the operator that the flat gate valve body 2 has dimensional abnormalities or assembly defects, failing to meet subsequent testing conditions and requiring manual intervention. The entire testing process does not require a complex electronic sensing system; it relies on mechanical displacement, elastic limiters, and electrical signal triggering to achieve highly sensitive and stable dimensional judgment. Simultaneously, the rotating plate 301 rotates continuously under the drive of the motor 302, allowing untested flat gate valve bodies 2 to move sequentially to the testing position, realizing a multi-position cyclic testing mechanism and greatly improving the device's testing efficiency. For efficiency, the bottom of the transmission plate 306 is fixedly connected to the testing platform 1, ensuring structural stability and facilitating the installation of multiple testing auxiliary units. The rotating plate 301 connected to the top of the transmission plate 306, when rotating, also drives the audible and visual alarm 305 mounted on it to move. However, its triggering response relies on a triggering system fixed within the performance testing device to ensure that rotation does not affect alarm accuracy. Furthermore, the spring rod 307 located on the outside of the base 315, together with the testing plate 312 and connecting plate 311, forms a buffer support structure. This structure provides flexible rebound protection for the entire testing mechanism when the compressive force exceeds the limit, effectively absorbing sudden impact forces and preventing structural damage. Simultaneously, it enhances the adaptability of the testing device to flat gate valve bodies 2 of different specifications or materials. After completing the preliminary testing of the valve diameter...The qualified flat gate valve body 2 will be further guided to the airtightness auxiliary testing mechanism 4 at the top of the testing platform 1 to begin the next step of sealing performance verification. The core of this structure is to perform negative pressure adsorption, airtight sealing and gas injection testing on the lower surface of the flat gate valve body 2 to determine its airtightness reliability in actual application. The airtightness auxiliary testing mechanism 4 includes components such as motor 2 403, lead screw 405, sliding plate 413, guide rail 1 401, guide rail 2 402, electric push rod 406, gas transfer pump 407, suction cup 408, testing groove 409, airtightness testing pump 411, connecting pipe 412 and installation pipe 410, etc., to form an integrated execution unit for multi-stage displacement adjustment and adsorption testing. First, the airtightness auxiliary testing mechanism 4 is set on the side of the testing platform 1. The second motor 403 of the valve body is powered on, and the lead screw 405 connected to its output end begins to rotate. One end of the lead screw 405 is rotatably connected to the fixed support 404, and the other end passes through and is threaded to the sliding plate 413. Through the rotational movement of the lead screw 405, the sliding plate 413 is smoothly and linearly slid along the first guide rail 401 and the second guide rail 402, so that the sliding plate 413, carrying the electric push rod 406 and the gas transfer pump 407, is accurately moved to directly above the current detection target to complete the alignment and positioning. Then, the electric push rod 406 is activated, and its free end is connected to the gas transfer pump 407. Under the pushing action of the push rod, the gas transfer pump 407 descends vertically, and the suction cup 408 at its bottom end gradually contacts and adheres to the upper part of the flat gate valve body 2. On the surface, through the suction negative pressure after the pump body starts, the suction cup 408 is firmly adsorbed onto the flat gate valve body 2, achieving soft and non-destructive fixation. At this time, by continuing to control the electric push rod 406 to move downward, the flat gate valve body 2 can be driven to move downward as a whole and slowly descend into the detection groove 409 to complete the positioning. In this state, the airtightness detection pump 411 set at the bottom of the detection platform 1 is started. Its output end is connected to the connecting pipe 412. One end of the connecting pipe 412 is fixed through the detection groove 409 and connected to the installation pipe 410. The installation pipe 410 is located in the bottom docking area of ​​the flat gate valve body 2 in the structural design, and it is just connected to the internal flow port of the flat gate valve body 2, forming a relatively closed gas detection environment. After the airtightness detection pump 411 starts working, A test gas at a certain pressure or vacuum value is injected into the gate valve. Subsequent sensors determine the pressure changes, leakage rate, or signs of gas escape in the sealed space to identify common faults such as micro-leakage, seam seepage, and incomplete valve seat closure in the flat gate valve body 2. This type of testing effectively replicates the working scenario in an actual pipeline network, ensuring that the flat gate valve body 2 has qualified sealing capabilities before leaving the factory. The entire airtightness testing process is controlled by the coordinated movement of motor 403 and lead screw 405 to achieve precise lateral movement and alignment of the testing unit. The electric push rod 406 achieves vertical displacement, ensuring the continuity of the adsorption and delivery into the testing tank 409. The suction cup 408 provides controllable suction force to avoid structural damage to the flat gate valve body 2 caused by rigid clamping.The combination of the airtightness testing pump 411 and the mounting pipe 410 provides a tight air injection channel for the construction of the testing chamber, possessing repeatable, high-precision, and reliable technical characteristics. More importantly, the various testing modules in this device are tightly linked and the process is continuous. The abnormal diameter alarm at the front end can effectively reject unqualified workpieces, avoiding the waste of resources in the airtightness testing stage. The adsorption-type airtightness testing at the rear end greatly improves the flexibility and adaptability of the testing, making it particularly suitable for products with complex structures and diverse shapes, such as flat gate valve bodies 2.

[0048] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A performance testing device for a flat gate valve, comprising a testing platform (1), characterized in that, The top of the testing platform (1) is provided with a caliber testing mechanism (3), and the bottom of the testing platform (1) is provided with an airtightness auxiliary testing mechanism (4). A caliber detection mechanism (3) includes a compression plate (314), a return spring (313), a connecting plate (311), a trigger rod (308), and a base (315). The bottom end of the return spring (313) is fixedly connected to the top end of the base (315), the top end of the return spring (313) is fixedly connected to the bottom end of the compression plate (314), the top end of the trigger rod (308) is fixedly connected to the bottom end of the compression plate (314), and one end of the connecting plate (311) is attached to the top of the compression plate (314). An airtightness auxiliary testing mechanism (4) includes an electric push rod (406), a gas transfer pump (407), a suction cup (408), and a testing groove (409). The free end of the electric push rod (406) is fixedly connected to the top end of the gas transfer pump (407), and the output end of the gas transfer pump (407) is fixedly connected to the top end of the suction cup (408).

2. The performance testing device for a flat gate valve according to claim 1, characterized in that, The bottom end of the testing platform (1) is fixedly connected to a motor (302), and two transmission wheels (303) are provided on one side of the motor (302). A transmission belt (304) is sleeved between the two transmission wheels (303). The top end of the testing platform (1) is fixedly connected to the performance testing device body (5).

3. The flat gate valve performance testing device according to claim 2, characterized in that, The output end of the motor (302) is fixedly connected to the inner side of one of the transmission wheels (303), and the top end of the other transmission wheel (303) is fixedly connected to a transmission plate (306), and the bottom end of the transmission plate (306) is rotatably connected to the top end of the testing table (1).

4. The flat gate valve performance testing device according to claim 3, characterized in that, A rotating plate (301) is fixedly connected to the top of the transmission plate (306), and an audible and visual alarm (305) is fixedly connected to the top of the rotating plate (301). The bottom of the base (315) is fixedly connected to the top of the rotating plate (301).

5. The performance testing device for a flat gate valve according to claim 4, characterized in that, The top of the rotating plate (301) is a flat gate valve body (2), and a spring rod (307) is fixedly connected to the outside of the base (315). One end of the spring rod (307) is fixedly connected to a detection plate (312), and the bottom end of the connecting plate (311) is fixedly connected to the top of the detection plate (312).

6. The flat gate valve performance testing device according to claim 5, characterized in that, A push-button trigger switch (310) is fixedly embedded at the top of the base (315). The push-button trigger switch (310) is electrically connected to the sound and light alarm (305). A rubber plate (309) is fixedly connected to the bottom of the trigger rod (308). The rubber plate (309) is placed on top of the push-button trigger switch (310).

7. The flat gate valve performance testing device according to claim 6, characterized in that, The detection groove (409) is fixedly connected to the inner wall of the processing table. The top of the detection table (1) is fixedly connected to a guide rail (401), and a support (404) is fixedly connected to one side of the top of the detection table (1).

8. The performance testing device for a flat gate valve according to claim 7, characterized in that, A sliding plate (413) is slidably connected between the support (404) and the first guide rail (401). The top of the sliding plate (413) is fixedly connected to the second guide rail (402), and the outside of the support (404) is fixedly connected to the second motor (403).

9. The performance testing device for a flat gate valve according to claim 8, characterized in that, The output end of the second motor (403) is fixedly connected to a lead screw (405). One end of the lead screw (405) is rotatably connected to the inner side of the support (404). The middle part of the lead screw (405) is slidably connected to the sliding plate (413). The gas transfer pump (407) is vertically slidably connected to the inner side of the second guide rail (402).

10. The performance testing device for a flat gate valve according to claim 9, characterized in that, An airtightness testing pump (411) is fixedly connected to the bottom of the testing platform (1). A connecting pipe (412) is fixedly connected to the output end of the airtightness testing pump (411). One end of the connecting pipe (412) passes through the testing groove (409) and is fixedly connected to the installation pipe (410).

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