Rapid switching ball valve surface wear resistance detection device

Abstract

The invention relates to the technical field of wear resistance detection, and more particularly discloses a rapid switching ball valve surface wear resistance detection device, which comprises a shell assembly, the shell assembly comprises a shell main body, the shell main body is internally provided with a rotating groove and a plurality of storage cavities, the plurality of storage cavities are circumferentially distributed, the storage cavities are internally provided with friction assemblies, and the friction assemblies are arranged in the rotating groove. A plurality of stop plates are fixedly connected to the side face of the interior of the shell body, a lifting assembly is installed on the stop plates, an expansion assembly is installed on the lifting assembly, a second motor and an expansion gear are installed in the lifting assembly, and a valve element body is placed on the lifting assembly. The expansion assembly can be self-adaptive to valve elements with different diameters and heights through gear transmission and an elastic clamping block structure, positioning data are fed back in real time in combination with a displacement sensor, firm clamping and accurate centering are ensured, and the problems that a traditional mechanical clamp is tedious in adjustment and the surfaces of the valve elements are prone to being damaged are solved.

Description

Technical Field

[0001] This invention relates to the field of wear resistance testing technology, and more specifically to a wear resistance testing device for the surface of a fast-switching ball valve. Background Technology

[0002] As a key opening and closing control component in industrial pipeline systems, the wear resistance of the valve core surface of a ball valve directly affects its sealing performance and service life.

[0003] Currently, the testing of the wear resistance of ball valve core surfaces mostly relies on a single friction method or manual visual inspection, which suffers from low testing efficiency, poor repeatability, and the inability to simulate complex wear under multiple operating conditions. Traditional testing devices are usually designed for specific models, and changing the valve core requires readjustment or replacement of the fixture, which is cumbersome and time-consuming, making it difficult to meet the needs of modern intelligent manufacturing with multiple varieties and small batches.

[0004] In addition, most existing equipment lacks the ability to coordinate multi-parameter control, and cannot comprehensively evaluate the wear effects of different pressures, speeds and friction materials on the valve core surface in the same test, resulting in one-sided test results that cannot truly reflect the wear resistance performance of the valve core under actual working conditions. Summary of the Invention

[0005] In order to overcome the above-mentioned defects of the prior art, the present invention provides a rapid switching ball valve surface wear resistance detection device to solve the problems existing in the background art.

[0006] This invention provides the following technical solution: a fast-switching ball valve surface wear resistance detection device, comprising a housing assembly, the housing assembly comprising a housing body, the housing body having a rotating groove and multiple receiving cavities inside, the multiple receiving cavities being circumferentially distributed, friction components installed inside the receiving cavities, multiple stop plates fixedly connected to the side inside the housing body, lifting components installed on the stop plates, expansion components installed on the lifting components, a second motor and expansion gear installed inside the lifting components, a valve core body placed on the lifting components, a rotating disk installed inside the rotating groove, an optical detector installed on the rotating disk, a spiral rod installed inside the housing body, the bottom of the spiral rod being connected to a first motor via a belt in a transmission chamber, the first motor driving the spiral rod to rotate via the belt, the first motor being installed in a motor chamber; Furthermore, the housing assembly is equipped with a detection and control system, which consists of multiple sensors, a control unit, and a detection unit. The multiple sensors include a top position sensor, a bottom position sensor, a displacement sensor, and a pressure sensor. The top position sensor is installed on the lifting assembly and is used to detect the object after the valve core is placed. The bottom position sensor is installed at the bottom inside the housing assembly and is used to determine the descent position of the lifting assembly. The displacement sensor is used to detect the unfolded width of the expansion assembly and the number of horizontal blocks used, and to determine the model of the valve core based on the diameter and height information.

[0007] Furthermore, the expansion assembly consists of an inner support arc plate and an expansion vertical rod. The expansion vertical rod is mounted on the expansion gear. The inner support arc plate and the expansion vertical rod are connected by a movable plate, which is mounted on the expansion slot. Multiple locking slots are provided on the outer side of the inner support arc plate. Horizontal locking blocks are installed inside the locking slots. Locking springs are installed inside the horizontal locking blocks, and the locking springs apply outward pressure to the horizontal locking blocks.

[0008] Furthermore, the lifting assembly includes a lifting platform, with a guide groove on the outer side of the lifting platform. The lifting assembly is mounted on the stop plate through the guide groove. The lifting platform has a motor groove and an expansion groove. The second motor is installed inside the motor groove, and the expansion groove is used to support the sliding of the expansion assembly.

[0009] Furthermore, the friction assembly includes a support rod, a differential friction wheel mounted on the support rod, a telescopic rod hinged to the bottom of the support rod, the telescopic rod being used to adjust and control the position of the differential friction wheel, the telescopic rod being mounted on the support rod via a connecting rod, and a pressure-sensing spring being installed at the bottom of the connecting rod, the pressure-sensing spring being used to buffer the frictional pressure of the differential friction wheel.

[0010] Furthermore, the extending gear has a rotating guide hole, and the extending vertical rod is installed in the rotating guide hole. The second motor drives the extending gear to rotate by meshing with the extending gear, and the rotation of the extending gear causes the extending component to move outward.

[0011] Furthermore, the detection unit includes an optical detector mounted on a rotating disk for image detection of the valve core during rotation. The detection information includes the depth and width of the friction marks. Combined with the different rotation speeds, pressure values, and materials of the differential friction wheels at different positions, the final detection result is output.

[0012] Furthermore, the rotating disk is a rotatable structure, and a drive mechanism, which is a third motor, is installed on the side of the rotating disk.

[0013] Furthermore, the pressure sensor is installed at the pressure measuring spring to collect pressure information of the differential friction wheel. After the pressure information is transmitted to the control unit, the control unit controls the extension of the telescopic rod to adjust the position of the differential friction wheel.

[0014] The technical effects and advantages of this invention are as follows: 1. This invention, by incorporating an extension component and multiple high-precision sensors, allows the extension component to adapt to valve cores of different diameters and heights through gear transmission and elastic locking structure. Combined with real-time feedback of positioning data from displacement sensors, it ensures secure clamping and precise alignment, avoiding the problems of cumbersome adjustment and easy damage to the valve core surface caused by traditional mechanical clamps.

[0015] 2. This invention, by incorporating independently adjustable friction components and a multivariable control method, facilitates the simulation of composite wear conditions under different operating conditions. Combined with a high-resolution optical detector driven by a rotating disk, it enables multi-angle, high-precision image acquisition and analysis of wear traces on the valve core surface. Furthermore, it can simultaneously adjust the pressure, rotation speed, and contact angle of different friction wheels, and collect dynamic pressure data in real time, thereby more comprehensively evaluating the wear resistance of the valve core and significantly improving the reliability of the detection data. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of the present invention.

[0017] Figure 2 This is a cross-sectional view of the overall structure of the present invention.

[0018] Figure 3 This is a schematic diagram of the housing assembly structure of the present invention.

[0019] Figure 4 This is a schematic diagram of the lifting component structure assembly of the present invention.

[0020] Figure 5 This is a cross-sectional view of the lifting component structure of the present invention.

[0021] Figure 6 This is a schematic diagram of the valve core body structure of the present invention.

[0022] Figure 7 For the present invention Figure 2 Schematic diagram of structure A in the middle.

[0023] Figure 8 This is a schematic diagram of the extended component structure of the present invention.

[0024] The attached figures are labeled as follows: 1. Outer shell assembly; 101. Outer shell body; 102. Rotating groove; 103. Receiving cavity; 104. Guide rod; 105. Stop plate; 106. Transmission chamber; 107. Motor chamber; 2. Valve core body; 201. Valve core body; 202. Friction mark; 3. Lifting assembly; 301. Lifting platform; 302. Guide groove; 303. Motor groove; 304. Expansion groove; 4. Expansion assembly; 401. Inner support arc plate; 402. Expansion vertical rod; 403. Locking block groove; 404. Locking block spring; 405. Horizontal locking block; 5. Helical rod; 6. Optical detector; 7. Rotating disk; 8. Friction assembly; 801. Support rod; 802. Telescopic rod; 803. Pressure measuring spring; 804. Differential friction wheel; 9. Belt; 10. First motor; 11. Expansion gear; 12. Second motor. Detailed Implementation

[0025] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings. In addition, the forms of the various structures described in the following embodiments are merely illustrative. The wear resistance detection device for the surface of a fast switching ball valve involved in the present invention is not limited to the structures described in the following embodiments. All other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0026] Reference Figures 1-3 This invention provides a rapid switching ball valve surface wear resistance testing device, including a housing assembly 1. The housing assembly 1 includes a housing body 101. The housing body 101 has a rotating groove 102 and multiple receiving cavities 103 inside. The multiple receiving cavities 103 are circumferentially distributed. Friction components 8 are installed inside the receiving cavities 103. Multiple stop plates 105 are fixedly connected to the side inside the housing body 101. A lifting assembly 3 is installed on the stop plate 105. An extension assembly 4 is installed on the lifting assembly 3. A second motor 12 and an extension gear 11 are installed inside the lifting assembly 3. A valve core 2 is placed on the lifting assembly 3. A rotating disk 7 is installed inside the rotating groove 102. An optical detector 6 is installed on the rotating disk 7. A spiral rod 5 is installed inside the housing body 101. The bottom of the spiral rod 5 is connected to a first motor 10 via a belt 9 in a transmission chamber 106. The first motor 10 drives the spiral rod 5 to rotate via the belt 9. The first motor 10 is installed in a motor chamber 107. In this embodiment, it should be specifically explained that: the housing assembly 1 is equipped with a detection and control system, which consists of multiple sensors, a control unit and a detection unit. The multiple sensors include a top position sensor, a bottom position sensor, a displacement sensor and a pressure sensor. The top position sensor is installed on the lifting assembly 3 and is used to detect the object after the valve core 2 is placed. The bottom position sensor is installed at the bottom inside the housing assembly 1 and is used to determine the descent position of the lifting assembly 3. The displacement sensor is used to detect the unfolded width of the extension assembly 4 and the number of horizontal blocks 405 used, and to determine the model of the valve core 2 based on the diameter and height information.

[0027] An LED strip light is added to the inner wall of the outer casing 101 to ensure uniform illumination and no shadows on the valve core surface during optical inspection.

[0028] The top and bottom position sensors preferably use NPN type photoelectric proximity switches such as the OMRONE3Z series, which are installed on the upper surface of the lifting platform 301 and the bottom of the inner cavity of the housing body 101, respectively, to detect the placement status of the valve core 2 and the lower limit of the lifting assembly 3. The displacement sensor uses a linear encoder such as the RSF40 type, which is installed on the side wall of the expansion slot 304 to accurately measure the extension displacement of the extension rod 402. The pressure sensor uses a miniature piezoelectric sensor such as the MEASMSP300 series, which is embedded in the bottom of the pressure measuring spring 803 to collect the positive pressure on the differential friction wheel 804 in real time.

[0029] The main difference between this embodiment and the prior art is that this embodiment utilizes the convenient installation of the valve core 2 and the automatic model detection of the expansion component 4 to achieve rapid switching of the valve core 2. At the same time, the up-and-down movement of the lifting component 3 combined with the different variable control of the friction component 8 enables the device to perform rapid multi-angle and multi-variable detection on the surface of the valve core 2. Specifically, this includes the lifting component 3, the expansion component 4, and the friction component 8. The above structure is the main structure of this embodiment, which solves the problem that the detection position of the valve core 2 is too simple and the installation and fixing method is too complicated. The third motor is an existing structure, and the specific structure and connection method of the third motor will not be described in detail in this embodiment.

[0030] Reference Figure 2 and Figure 6The rotating disk 7 is a rotatable structure, and a drive mechanism, which is a third motor, is mounted on its side. During the image detection stage, the third motor drives the rotating disk 7 to rotate, allowing the optical detector 6 to acquire images of the wear condition of the valve core 2 from multiple angles. The optical detector 6 uses a 5-megapixel industrial CCD camera, such as a Hikvision MV-CH050-10UM, equipped with a ring-shaped LED shadowless light source, and is fixed to the rotating disk 7 with bolts. The camera lens axis is perpendicular to the outer surface of the valve core 2 to ensure distortion-free image acquisition. The rotating disk 7 is driven by a Panasonic MINAS A6 series servo motor via a worm gear mechanism, and can perform precise 0-360° indexing rotation under control unit commands, achieving multi-angle image acquisition.

[0031] In this embodiment, it should be specifically noted that the detection unit includes an optical detector 6, which is mounted on a rotating disk 7 for image detection of the valve core 2 during rotation. The detection information includes the depth information and width information of the friction mark 202. Combined with the different rotation speeds, pressure values ​​and materials of the differential friction wheel 804 at different positions, the final detection result is output.

[0032] Reference Figures 4-5 The lifting assembly 3 includes a lifting platform 301. A guide groove 302 is provided on the outer side of the lifting platform 301. The lifting assembly 3 is installed on the stop plate 105 through the guide groove 302. A motor groove 303 and an expansion groove 304 are provided on the lifting platform 301. The second motor 12 is installed inside the motor groove 303. The expansion groove 304 is used to support the sliding of the expansion assembly 4.

[0033] In this embodiment, it should be specifically noted that: the extension gear 11 has a rotation guide hole, the extension vertical rod 402 is installed in the rotation guide hole, the second motor 12 drives the extension gear 11 to rotate by meshing with the extension gear 11, the rotation of the extension gear 11 causes the extension component 4 to move outward, and a self-lubricating bushing is added to the inner wall of the rotation guide hole of the extension gear 11 to reduce the frictional resistance when the extension vertical rod 402 moves and improve the reliability of the operation.

[0034] Reference Figure 7The friction assembly 8 includes a support rod 801, a differential friction wheel 804 mounted on the support rod 801, and a telescopic rod 802 hinged to the bottom of the support rod 801. The telescopic rod 802 is used to adjust and control the position of the differential friction wheel 804. The telescopic rod 802 is mounted on the support rod 801 via a connecting rod. A pressure-sensing spring 803 is installed at the bottom of the connecting rod. The pressure-sensing spring 803 is used to buffer the friction pressure of the differential friction wheel 804. A pressure sensor is installed at the pressure-sensing spring 803 to collect the pressure information of the differential friction wheel 804. After the pressure information is transmitted to the control unit, the control unit controls the extension of the telescopic rod 802 to adjust the position of the differential friction wheel 804. Each differential friction wheel 804 is driven by an independent micro servo motor. Each servo motor is fixed inside the support rod 801 and is connected to the differential friction wheel 804 through a reduction gear set. Based on the model information of valve core 2, the control unit retrieves the friction speed and pressure values ​​corresponding to the material and working conditions from the preset parameter library, and independently controls the speed of each servo motor through pulse signals to realize differential operation between different friction wheels, simulating the compound wear effect in actual working conditions.

[0035] In this embodiment, it should be specifically noted that the telescopic rod installed at the pressure measuring spring 803 produces different lengths when it extends, giving the pressure measuring spring 803 different pressure buffer zones. Combined with the differential friction wheel 804 at different positions, it provides different rotational speeds to achieve multi-variable detection.

[0036] Reference Figure 3 The extension component 4 consists of an inner support arc plate 401 and an extension vertical rod 402. The extension vertical rod 402 is mounted on the extension gear 11. The inner support arc plate 401 and the extension vertical rod 402 are connected by a movable plate, which is mounted on the extension slot 304. The outer side of the inner support arc plate 401 is provided with multiple locking slots 403. A horizontal locking block 405 is installed inside the locking slot 403. A locking spring 404 is installed inside the horizontal locking block 405. The locking spring 404 applies outward pressure to the horizontal locking block 405.

[0037] In this embodiment, it should be specifically explained that: the rotation of the second motor 12 drives the extension gear 11 to rotate, causing the extension vertical rod 402 to move outward under the action of the rotation guide hole. The movement of the extension vertical rod 402 causes the outer side of the inner support arc plate 401 to contact the inner side of the valve core body 2. Multiple horizontal locking blocks 405 are compressed into the locking block groove 403 by the pressure of the valve core body 2. The part of the horizontal locking blocks 405 that exceeds the valve core body 2 applies a fixing effect to the valve core body 2, making the valve core body 2 unable to move up and down, thus achieving a fixing effect.

[0038] Working principle of the invention: The main problem solved by this embodiment is that the valve core 2 can be quickly switched by using the convenient installation of the valve core 2 and the automatic model detection of the expansion component 4. At the same time, the device can quickly detect the surface of the valve core 2 from multiple angles and variables by using the up and down movement of the lifting component 3 combined with the different variable control of the friction component 8. This solves the problem that the detection position of the valve core 2 is too singular and the installation and fixing method is too complicated.

[0039] A method for quickly testing the surface wear resistance of a ball valve, comprising the following steps: S1: The valve core 2 is placed on the lifting assembly 3. The top position sensor detects the placement of the valve core 2 and transmits an electrical signal to the control unit to control the second motor 12 to rotate. The rotation of the second motor 12 drives the extension gear 11 to rotate, causing the extension vertical rod 402 to move outward under the action of the rotation guide hole. The movement of the extension vertical rod 402 causes the outer side of the inner support arc plate 401 to contact the inner side of the valve core 2. When it stops, the displacement sensor collects the movement distance information of the extension vertical rod 402. At the same time, when the inner support arc plate 401 contacts the valve core 2, the bottom horizontal block 405 is pressed and will retract into the block groove 403. The lowest point of the horizontal block 405 that is not retracted into the block groove 403 is the height of the valve core 2. The displacement sensor also collects the movement information of the horizontal block 405 to form the height information of the valve core 2. S2: After the fixing is completed, the first motor 10 controls the screw rod 5 to rotate so that the lifting assembly 3 is lowered to the bottom. When the bottom position sensor determines that the lifting assembly 3 has moved to the bottom, the control unit determines the model of the valve core 2 by combining the height and inner diameter information of the valve core 2, and controls the telescopic rod 802 to retract. The telescopic rods inside the pressure springs 803 in different storage cavities 103 have different extension lengths so that the pressure springs 803 can buffer different pressure ranges. At the same time, the differential friction wheels 804 at different positions provide different speeds. S3: As the lifting component 3 continues to rise, the friction component 8 forms scratches of varying depths on the outer surface of the valve core 2. At this time, the pressure sensor at the bottom of the pressure measuring spring 803 continuously collects the reverse pressure information of the valve core 2 on the friction component 8 during the friction process, detects the instantaneous pressure value, and forms a pressure curve. S4: After the friction ends, the telescopic rod 802 extends to completely retract the friction component 8 into the storage cavity 103. The lifting component 3 continues to rise. When passing the rotating disk 7, the rotation of the rotating disk 7 causes the optical detector 6 to collect surface information of the valve core 2. Based on different pressures, different friction speeds and different materials, a single model of test results is generated to complete the test.

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

Claims

1. A quick-switching ball valve surface wear resistance testing device, comprising a housing assembly (1), characterized in that: The outer shell assembly (1) includes an outer shell body (101). The outer shell body (101) has a rotating groove (102) and multiple storage cavities (103) inside. The multiple storage cavities (103) are distributed in a circular pattern. Friction components (8) are installed inside the storage cavities (103). Multiple stop plates (105) are fixedly connected to the side inside the outer shell body (101). A lifting assembly (3) is installed on the stop plate (105). An extension assembly (4) is installed on the lifting assembly (3). A second motor is installed inside the lifting assembly (3). 12) With the extension gear (11), the valve core (2) is placed on the lifting assembly (3), the rotating groove (102) is equipped with a rotating disk (7), the rotating disk (7) is equipped with an optical detector (6), the outer shell body (101) is equipped with a spiral rod (5), the bottom of the spiral rod (5) is connected to the first motor (10) in the transmission chamber (106) via a belt (9), the first motor (10) drives the spiral rod (5) to rotate via the belt (9), and the first motor (10) is installed in the motor chamber (107); The housing assembly (1) is equipped with a detection and control system. The detection and control system consists of multiple sensors, control units and detection units. The multiple sensors include a top position sensor, a bottom position sensor, a displacement sensor and a pressure sensor. The top position sensor is installed on the lifting assembly (3) and is used to detect objects after the valve core (2) is placed. The bottom position sensor is installed at the bottom inside the housing assembly (1) and is used to determine the lowering position of the lifting assembly (3). The displacement sensor is used to detect the unfolded width of the extension assembly (4) and the number of horizontal blocks (405) used. The model of the valve core (2) is determined based on the diameter and height information.

2. The wear resistance testing device for a fast-switching ball valve surface according to claim 1, characterized in that: The extension component (4) consists of an inner support arc plate (401) and an extension vertical rod (402). The extension vertical rod (402) is mounted on the extension gear (11). The inner support arc plate (401) and the extension vertical rod (402) are connected by a movable plate. The movable plate is mounted on the extension slot (304). Multiple locking slots (403) are provided on the outer side of the inner support arc plate (401). Horizontal locking blocks (405) are installed inside the locking slots (403). Locking springs (404) are installed inside the horizontal locking blocks (405). The locking springs (404) apply outward pressure to the horizontal locking blocks (405).

3. The wear resistance testing device for a fast-switching ball valve surface according to claim 1, characterized in that: The lifting assembly (3) includes a lifting platform (301), and a guide groove (302) is provided on the outer side of the lifting platform (301). The lifting assembly (3) is installed on the stop plate (105) through the guide groove (302). A motor groove (303) and an expansion groove (304) are provided on the lifting platform (301). The second motor (12) is installed inside the motor groove (303), and the expansion groove (304) is used to support the sliding of the expansion assembly (4).

4. The wear resistance testing device for a fast-switching ball valve surface according to claim 1, characterized in that: The friction assembly (8) includes a support rod (801), a differential friction wheel (804) mounted on the support rod (801), a telescopic rod (802) hinged to the bottom of the support rod (801), the telescopic rod (802) is used to adjust and control the position of the differential friction wheel (804), the telescopic rod (802) is mounted on the support rod (801) through a connecting rod, and a pressure spring (803) is installed at the bottom of the connecting rod, the pressure spring (803) is used to buffer the friction pressure of the differential friction wheel (804).

5. The wear resistance testing device for a fast-switching ball valve surface according to claim 1, characterized in that: The extension gear (11) has a rotation guide hole, and the extension rod (402) is installed in the rotation guide hole. The second motor (12) drives the extension gear (11) to rotate by meshing with the extension gear (11). The rotation of the extension gear (11) causes the extension component (4) to move outward.

6. The wear resistance testing device for a fast-switching ball valve surface according to claim 1, characterized in that: The detection unit includes an optical detector (6), which is mounted on a rotating disk (7) for image detection of the valve core (2) during rotation. The detection information includes the depth information and width information of the friction mark (202). Combined with the different rotation speeds, pressure values ​​and materials of the differential friction wheel (804) at different positions, the final detection result is output.

7. The wear resistance testing device for a fast-switching ball valve surface according to claim 1, characterized in that: The rotating disk (7) is a rotatable structure, and a drive mechanism is installed on the side of the rotating disk (7). The drive mechanism is a third motor.

8. The wear resistance testing device for a fast-switching ball valve surface according to claim 1, characterized in that: The pressure sensor is installed at the pressure measuring spring (803) to collect pressure information of the differential friction wheel (804). After the model information is transmitted to the control unit, the control unit controls the extension of the telescopic rod (802) to adjust the position of the differential friction wheel (804).

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