Movable valve checking table

Abstract

The invention belongs to the technical field of verification devices, and particularly relates to a movable valve verification table which comprises a control box and a verification box. A bearing plate is installed on the clamp disc, a clamping air cylinder is installed in the verification box, a connecting rod is installed on the clamping air cylinder, the upper end of the connecting rod is connected to the bearing plate in a sliding mode, and an air pipe is connected to the lower surface of the bearing plate; a clamp disc is installed on the verification box, pressing rods are installed on the clamp disc through a rotating shaft rod, and the pressing rods are in lap joint with one another; the bearing plate is provided with a sealing gasket, the pressing rods clamp a flange plate on a valve to be detected on the bearing plate, and the mutually lapped surfaces of the pressing rods are subjected to roughening treatment; the valve piece checking device is simple in structure, can check valve pieces with different nominal drift diameters, facilitates disassembly and assembly of the valve pieces, improves the working efficiency of valve piece checking, can guarantee the sealing performance in the checking process, and improves the checking accuracy.

Description

Technical Field

[0001] The invention belongs to the technical field of calibration devices, in particular to a mobile valve component calibration platform. Background Art

[0002] Since outsourced construction requires valve calibration, the existing valve calibration bench is bulky and cannot be moved. Therefore, the valves can only be mailed from the construction site to the designated location for calibration, which is inefficient and prone to dust ingress or paint peeling during express transportation, affecting construction quality.

[0003] In order to improve the efficiency of valve calibration in outsourced construction, a mobile valve calibration bench is specially developed to split the integrated, all-in-one multi-valve calibration bench into multiple smaller single-valve calibration benches suitable for different solenoid valves, so that they can be flexibly selected according to construction needs, saving transportation costs and improving the efficiency of outsourced construction.

[0004] During calibration, the valve parts need to be fixed to prevent them from moving and affecting the accuracy of the calibration. However, the existing calibration devices have a single fixing function and are not convenient for fixing safety valves of different sizes. In addition, the clamping and fixing of the valve parts is relatively complicated, which affects the efficiency of valve disassembly and assembly and the work efficiency of the calibration. At the same time, the sealing effect is poor during calibration, which affects the accuracy of the safety valve. Summary of the invention

[0005] In order to make up for the deficiencies of the prior art, the present invention proposes a mobile valve calibration table, which can calibrate valves of different nominal diameters, facilitate the disassembly and installation of valves, improve the working efficiency of valve calibration, and at the same time, ensure the sealing during the calibration process and improve the accuracy of the calibration.

[0006] The technical solution adopted by the present invention to solve the technical problem is: the mobile valve component inspection platform of the present invention comprises a control box and a inspection box, wherein the control box and the inspection box are connected to each other through a quick-connect pipe; A through hole is provided in the middle of the clamping plate, a carrying plate is installed in the through hole, a clamping cylinder is installed in the inspection box, a connecting rod is hingedly installed on the lifting rod on the clamping cylinder, a support rod is installed in the through hole, the support rod and the connecting rod are hinged, a slide groove is provided on the lower surface of the carrying plate, the upper end of the connecting rod is slidably installed in the slide groove, an air outlet is provided on the carrying plate, and an air pipe is connected to the lower end of the air outlet; The inspection box is provided with a fixture disk, a rotating shaft rod is rotatably provided on the fixture disk, a pressure rod is provided on the rotating shaft rod, and at least three groups of the pressure rods are provided, and the pressure rods are overlapped with each other; A sealing gasket is installed on the bearing plate, and the pressure rod clamps the flange on the valve to be tested on the bearing plate. The overlapping surfaces of the pressure rod are roughened.

[0007] Preferably, a retaining ring is installed on the rotating shaft rod, and there is a movable gap between the retaining ring and the upper surface of the clamping plate, and the rotating shaft rod slides up and down in the vertical direction within the range of the movable gap.

[0008] Preferably, the pressure rod includes a clamping end and an overlapping end, and the clamping end is used to press the flange of the valve to be tested; A buffer layer is installed on the lower surface of the clamping end, and the thickness of the buffer layer is equal to the value of the active gap; Magnetic blocks are installed on the lower surface of the overlapping end and the upper surface of the clamping end, and the magnetic blocks attract each other.

[0009] Preferably, the buffer layer is provided with an edge area and a recessed area in sequence from the edge to the middle, the thickness of the edge area is greater than the thickness of the recessed area, the surface of the edge area is covered with a polytetrafluoroethylene layer, and the surface of the recessed area is roughened.

[0010] Preferably, an elastic bag is installed in the sealing gasket, and the elastic bag is close to the surface of the flange close to the sealing gasket.

[0011] Preferably, a plurality of groups of limiting rods are installed on the bearing plate, a common guide rod is installed on the limiting rods, and the guide rod is elastic; The end of the guide rod is in contact with the inner wall of the valve port on the valve to be detected, and the limiting rods are evenly distributed around the center line of the bearing plate.

[0012] Preferably, a smooth head is installed at the end of the guide rod, and the smooth head is made of polytetrafluoroethylene material; The guide rod and the limiting rod are fixedly connected by bolts, and the angle between the guide rod and the limiting rod is adjusted after the bolts are loosened.

[0013] Preferably, an interception net is movably installed at the air outlet, and an adsorption fluff layer is provided on the surface of the interception net.

[0014] The beneficial effects of the present invention are as follows: 1. The mobile valve component inspection bench described in the present invention, by providing a bearing plate, a clamping plate and a pressure rod, the pressure rod is rotated to the top of the flange plate, so that the pressure rods overlap each other to form a mutual supporting structure, and the flange plate is clamped and fixed in cooperation with the bearing plate, so that the fixing structure of the valve is relatively simple, and the clamping, fixing, disassembly and installation of the valve are convenient. At the same time, the area on the clamping plate located between the pressure rods is relatively large, which can facilitate the inspection of valves of different diameters and improve the application scope of the inspection bench. At the same time, through the mutual cooperation between the clamping cylinder, connecting rod, bearing plate, sealing gasket and the pressure rod that constitutes the mutual supporting structure, the lever principle is utilized to generate a larger upward jacking force without using an overly large clamping cylinder, so that the flange plate and the sealing gasket are in close contact, thereby improving the sealing performance during the valve inspection process and ensuring the accuracy of the valve inspection.

[0015] 2. The mobile valve component calibration bench described in the present invention is provided with a limiting rod, a guide rod and a smooth head. When placing the valve, the limiting rod and the guide rod are inserted into the valve port, and the guide rod is used to guide and position the valve, so as to ensure that the center line of the valve and the center line of the bearing plate coincide with each other, ensure that the pressure rod is evenly and balanced when clamping and fixing the valve, and ensure that the valve calibration process proceeds smoothly. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The present invention will be further described below in conjunction with the accompanying drawings.

[0017] Figure 1 It is a front view of the calibration table of the present invention; Figure 2 It is a structural schematic diagram of the calibration box in the calibration table of the present invention; Figure 3 It is a structural schematic diagram of a load-bearing plate in a test bench of the present invention; Figure 4 It is a schematic diagram of the positions of the pressure rods in the test bench of the present invention when they overlap each other; Figure 5 It is a structural schematic diagram of the pressure rod in the test bench of the present invention; Figure 6 yes Figure 2 A partial enlarged view of the middle part; Figure 7 yes Figure 3 A partial enlarged view of point B in the middle; Figure 8 yes Figure 5 A partial enlarged view of point C in the middle; In the figure: control box 1, calibration box 2, air pipe 21, fixture plate 3, through hole 31, pressure rod 4, shaft rod 41, retaining ring 411, movable gap h, clamping end 42, lap end 43, buffer layer 44, recessed area 441, edge area 442, magnetic block 45, clamping cylinder 5, lifting rod 51, connecting rod 52, bracket rod 521, bearing plate 6, slide groove 61, sealing gasket 62, elastic bag 63, air outlet 64, intercepting net 641, limiting rod 7, guide rod 71, smooth head 711, valve 8, flange 81. DETAILED DESCRIPTION

[0018] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further explained below in conjunction with specific implementation methods.

[0019] like Figures 1 to 8 As shown, the mobile valve component inspection platform of the present invention comprises a control box 1 and an inspection box 2, wherein the control box 1 and the inspection box 2 are connected to each other via a quick-connect pipe; A through hole 31 is provided in the middle of the clamp plate 3, a bearing plate 6 is installed in the through hole 31, a clamping cylinder 5 is installed in the inspection box 2, a connecting rod 52 is hingedly installed on the lifting rod 51 on the clamping cylinder 5, a support rod 521 is installed in the through hole 31, the support rod 521 is hinged to the connecting rod 52, a slide groove 61 is provided on the lower surface of the bearing plate 6, the upper end of the connecting rod 52 is slidably installed in the slide groove 61, an air outlet 64 is provided on the bearing plate 6, and the lower end of the air outlet 64 is connected to the air pipe 21; The check box 2 is provided with a fixture plate 3, a rotating shaft rod 41 is rotatably provided on the fixture plate 3, a pressure rod 4 is provided on the rotating shaft rod 41, and at least three groups of pressure rods 4 are provided, and the pressure rods 4 overlap each other; The bearing plate 6 is provided with a sealing gasket 62, and the pressure rod 4 clamps the flange 81 on the valve to be tested 8 on the bearing plate 6, and the overlapping surfaces of the pressure rod 4 are roughened; When checking the valve, the valve 8 to be checked is placed on the carrier plate 6. Then, the staff rotates the pressure rod 4 on the fixture plate 3 to move the pressure rod 4 to the flange 81 of the valve 8 and overlap the pressure rods 4. Then, the staff operates the control box 1 to start the check. During the check, the control box 1 controls various actions on the check box 2 and records various data during the check, thereby completing the check of the valve 8 to be checked. During the calibration process, the clamping cylinder 5 is actuated to drive the lifting rod 51 to move downward, so that the connecting rod 52 hinged on the lifting rod 51 moves, and the upper end of the connecting rod 52 moves in the slide groove 61 on the bearing plate 6 in a direction away from the center line, so that the bearing plate 6 is pushed up, so that the flange 81 of the valve 8 is pressed upward by the bearing plate 6 and clamped by the pressure rod 4, and then the pressure gas released in the control box 1 is discharged from the air outlet 64 through the air pipe 21 into the valve 8, so that the valve 8 is calibrated; At the same time, since the sealing gasket 62 is installed on the bearing plate 6, when the flange 81 is clamped by the pressure rod 4 and the bearing plate 6, the sealing of the valve 8 during the calibration process is ensured to avoid affecting the calibration accuracy. At the same time, since the lever structure is formed between the connecting rod 52 and the bracket rod 521, and the connecting rod 52 is evenly distributed around the center line of the bearing plate 6, the bearing plate 6 is subjected to balanced force when it is pushed up, and a large upward pushing force can be generated without using an overly large clamping cylinder 5, so that the contact between the flange 81 and the sealing gasket 62 is closer, and the sealing between the bearing plate 6 and the flange 81 is further ensured. At the same time, since the pressure rods 4 are rotated onto the flange 81 and the pressure rods 4 are overlapped with each other, a mutual supporting structure is formed between the pressure rods 4, that is, each pressure rod 4 is combined into a whole. At this time, since the pressure rods 4 are installed on the rotating shaft rod 41, after the bearing plate 6 lifts up the flange 81, the force of the flange 81 on the pressure rod 4 is evenly dispersed to the rotating shaft rod 41 connected to each pressure rod 4, and the force on the rotating shaft rod 41 is vertically upward, thereby ensuring the clamping and fixing effect of the pressure rod 4 on the flange 81, avoiding uneven force on one of the pressure rods 4, causing the valve 8 lifted by the bearing plate 6 to be skewed or offset, affecting the sealing between the flange 81 and the bearing plate 6 or causing safety hazards in the calibration process, and avoiding the pressure rods 4 to be independent of each other, resulting in uneven force on the rotating shaft rod 41, affecting the clamping and fixing effect; At the same time, since the overlapping surfaces of the pressure rods 4 are roughened, the friction between the pressure rods 4 after overlapping is relatively large, which prevents the pressure rods 4 from slipping or separating after overlapping due to the smooth surface of the pressure rods 4, resulting in poor or ineffective clamping and fixing effect of the valve 8, and causing safety hazards during the calibration process; At the same time, since the pressure rod 4 clamps and fixes the flange 81 of the valve 8 by overlapping each other, and the distance between the rotating shaft rod 41 on the pressure rod 4 and the center of the clamp plate 3 is relatively large, the area on the clamp plate 3 or the supporting plate 6 where the flange 81 can be placed is relatively large, so that valves 8 of different nominal diameters can be calibrated, thereby improving the application range of the calibration bench. At the same time, the valve 8 is clamped and fixed by the pressure rod 4, so that the fixing mechanism of the valve 8 is relatively simple, which can facilitate the clamping and fixing of the valve 8, improve the efficiency of disassembly and assembly of the valve 8, and improve the working efficiency of the valve 8 calibration.

[0020] As an embodiment of the present invention, a retaining ring 411 is installed on the rotating shaft rod 41, and there is an active gap h between the retaining ring 411 and the upper surface of the clamp plate 3, and the rotating shaft rod 41 slides up and down in the vertical direction within the active gap h; Since the retaining ring 411 is provided on the rotating shaft rod 41, the rotating shaft rod 41 and the pressure rod 4 can move up and down within the range of the movable gap h, so that when the staff rotates the pressure rod 4, there is a gap between the pressure rods 4 in the vertical direction, so that it is convenient for the pressure rods 4 to overlap each other, and avoid the pressure rods 4 from fitting and contacting each other in the vertical direction, resulting in excessive friction between the pressure rods 4 when the staff rotates the pressure rods 4, so that the pressure rods 4 cannot be easily and conveniently rotated to the state where the pressure rods 4 overlap each other, affecting the clamping and fixing of the pressure rods 4 to the flange 81; At the same time, when the pressure rod 4 is rotated to reach above the flange 81, during the verification process, as the bearing plate 6 drives the flange 81 to push up, the pressure rods 4 will move in the vertical direction, so that the pressure rods 4 contact each other and begin to overlap, so that the pressure rods 4 are combined into an integral structure, so that the pressure rod 4 and the rotating shaft rod 41 are subjected to uniform and balanced force, thereby ensuring a good clamping and fixing effect on the valve 8, and ensuring a good sealing between the flange 81 on the valve 8 and the bearing plate 6, thereby avoiding poor sealing affecting the accuracy of the valve 8 verification.

[0021] As an embodiment of the present invention, the pressure rod 4 includes a clamping end 42 and a lap end 43, and the clamping end 42 is used to press the flange 81 of the valve 8 to be tested; A buffer layer 44 is installed on the lower surface of the clamping end 42, and the thickness of the buffer layer 44 is equal to the value of the active gap h; The lower surface of the lap end 43 and the upper surface of the clamping end 42 are provided with magnetic blocks 45 , and the magnetic blocks 45 attract each other; After the pressure rod 4 is rotated, the pressure rod 4 will be close to the valve 8, so that the pressure rod 4 is located on the flange 81. Then, during the calibration process, the buffer layer 44 installed on the lower surface of the clamping end 42 of the pressure rod 4 will contact the surface of the flange 81, avoiding hard contact between the pressure rod 4 and the flange 81, thereby avoiding extrusion damage to the surface of the flange 81, ensuring the good appearance of the valve 8 and preventing corrosion and rust from occurring at the damaged surface of the valve 8. At the same time, since the size of the active gap h is equal to the thickness of the buffer layer 44, while ensuring that the pressure rod 4 can easily move to overlap each other, the distance that the bearing plate 6 drives the flange 81 to move upward can be relatively short, thereby preventing the bearing plate 6 from driving the flange 81 to move upward for a long distance, causing the valve 8 and the flange 81 to slide, tilt or fall during the movement, thereby ensuring the smooth verification of the valve 8; At the same time, since the lower surface of the overlapping end 43 and the upper surface of the clamping end 42 are installed with a magnetic block 45, after the pressure rod 4 is rotated to the top of the flange 81 and the pressure rods 4 are overlapped with each other, the position of the pressure rod 4 can be relatively stable, so that the pressure rods 4 can maintain an overlapping state, thereby avoiding accidental rotation or sliding of the pressure rod 4 during the clamping, disassembly and calibration of the valve 8, resulting in overlapping contact or instability between the pressure rods 4, affecting the normal calibration of the valve 8 and causing safety hazards in the calibration process of the valve 8.

[0022] As an embodiment of the present invention, the buffer layer 44 is provided with an edge area 442 and a recessed area 441 in sequence from the edge to the middle, the thickness of the edge area 442 is greater than the thickness of the recessed area 441, the surface of the edge area 442 is covered with a polytetrafluoroethylene layer, and the surface of the recessed area 441 is roughened; Since the edge area 442 on the buffer layer 44 is covered with a polytetrafluoroethylene layer and the thickness of the edge area 442 is greater than the thickness of the recessed area 441, the edge area 442 first contacts the surface of the flange 81, and the area of ​​the edge area 442 is much smaller than the area of ​​the recessed area 441, so that when the pressure rod 4 is rotated, the friction between the buffer layer 44 and the surface of the flange 81 is reduced, so that it is convenient for the pressure rod 4 to rotate to the top of the flange 81 and the pressure rods 4 are in an overlapping state, thereby avoiding full contact between the buffer layer 44 and the flange 81, resulting in excessive friction of the buffer layer 44 during the process of the pressure rod 4 rotating to the top of the flange 81, causing the buffer layer 44 to deform or fall off, affecting the isolation effect of the buffer layer 44 on the pressure rod 4 and the flange 81 or affecting the clamping and fixing effect of the pressure rod 4 on the valve 8; At the same time, since the buffer layer 44 has good elasticity, during the valve 8 calibration process, the buffer layer 44 will be squeezed and deformed, so that the edge area 442 and the recessed area 441 are both attached to the surface of the flange 81, and the friction between the recessed area 441 and the surface of the flange 81 is relatively large, ensuring that the pressure rod 4 has a good clamping and fixing effect on the flange 81, and avoiding pressure loss on the surface of the flange 81 by the pressure rod 4, which affects the appearance quality of the valve 8.

[0023] As an embodiment of the present invention, an elastic bag 63 is installed in the sealing gasket 62, and the elastic bag 63 is close to the surface of the sealing gasket 62 close to the flange 81; By installing an elastic bag 63 in the sealing gasket 62, when the bearing plate 6 drives the flange 81 to push up and the pressure rod 4 squeezes and presses the flange 81, the flange 81 will be tightly attached to the sealing gasket 62, and the elastic bag 63 will also be squeezed, thereby forming an area with higher pressure on the sealing gasket 62, thereby improving the sealing between the sealing gasket 62 and the flange 81, avoiding poor sealing between the valve 8 and the sealing gasket 62 during the calibration process, which affects the accuracy of the valve 8 calibration.

[0024] As an embodiment of the present invention, a plurality of groups of limiting rods 7 are installed on the bearing plate 6, and a common guide rod 71 is installed on the limiting rod 7, and the guide rod 71 is elastic; The end of the guide rod 71 contacts the inner wall of the valve port of the valve to be tested 8, and the limiting rods 7 are evenly distributed around the center line of the bearing plate 6; When placing the valve 8 to be inspected on the carrier plate 6, the upper end of the limiting rod 7 will be inserted into the valve port on the valve 8. Then, as the valve 8 descends, the end of the guide rod 71 will contact the inner wall of the valve port. With the uniform distribution of the limiting rods 7 around the center line, the valve 8 is positioned by the guide rod 71 and the limiting rod 7, so that the center line of the valve port on the valve 8 coincides with the center line of the carrier plate 6, ensuring that the valve 8 inspection process proceeds smoothly. At the same time, the valve 8 is positioned during placement by the guide rod 71, so that when the valve 8 is placed on the carrier plate 6, the valve 8 can be accurately placed in the middle position of the carrier plate 6, so that when the pressure rod 4 is rotated and the pressure rod 4 reaches the top of the flange 81 and the side of the pressure rod 4 contacts the surface of the valve 8 on the flange 81, each pressure rod 4 can be relatively evenly distributed on the flange 81, that is, the center line of the flange 81 and the valve 8 is located in the middle position of the area surrounded by each pressure rod 4, so that the flange 81 and the pressure rod 4 can be subjected to uniform and balanced force during the verification process, ensuring a good clamping and fixing effect of the valve 8 during the verification process, and avoiding the valve 8 from deviating from the center position of the carrier plate 6, resulting in uneven force on each pressure rod 4, affecting the clamping and fixing effect of the valve 8 and causing safety hazards during the verification process.

[0025] As an embodiment of the present invention, a smooth head 711 is installed at the end of the guide rod 71, and the smooth head 711 is made of polytetrafluoroethylene material; The guide rod 71 is fixedly connected to the limiting rod 7 by bolts, and the angle between the guide rod 71 and the limiting rod 7 is adjusted after the bolts are loosened; Since the guide rod 71 will contact the inner wall of the valve port on the valve 8, and as the valve 8 is placed downward, the end of the guide rod 71 will slide along the inner wall of the valve port, therefore, a smooth head 711 made of polytetrafluoroethylene material is installed at the end of the guide rod 71, so that the friction between the guide rod 71 and the inner wall of the valve port is relatively small, so that the valve 8 can be accurately positioned when placed and the guide rod 71 can be prevented from scratching the inner wall of the valve port, which affects the subsequent normal use of the valve 8; At the same time, when calibrating valves 8 with a large difference in nominal diameters, the staff loosens the bolts with tools to adjust the angle between the guide rod 71 and the limiting rod 7 or replaces the guide rod 71 with a longer length, and then retightens the bolts to lock the guide rod 71 and the limiting rod 7 together, so as to adapt to the calibration of valves 8 with different nominal diameters.

[0026] As an embodiment of the present invention, an interception net 641 is movably installed at the air outlet 64, and an adsorption fluff layer is arranged on the surface of the interception net 641; An interception net 641 is installed in the air outlet 64 to prevent external dust and impurities from entering the air outlet 64 and the air pipe 21, and then entering the valve 8 during the valve 8 calibration process, affecting the subsequent normal use of the valve 8. At the same time, since the interception net 641 is movably installed and an adsorption fluff layer is provided in the interception net 641, before placing the valve 8 on the calibration table, the interception net 641 is removed and the dust and impurities therein are cleaned, thereby preventing dust and impurities from entering the valve 8 during the calibration process. At the same time, the interception net 641 is installed in the air outlet 64, so that the gas delivered during the calibration process will block and slow down the interception net 641, thereby preventing the gas ejected from the air outlet 64 during the calibration from directly filling the valve 8, thereby avoiding affecting the valve 8 calibration result.

[0027] The specific workflow is as follows: When checking the valve, the valve 8 to be checked is placed on the carrier plate 6, and then the staff rotates the pressure rod 4 on the fixture plate 3 to move the pressure rod 4 to the flange 81 of the valve 8 and overlap the pressure rods 4, and then the staff operates the control box 1 to start the check; During the calibration process, the clamping cylinder 5 is actuated to drive the lifting rod 51 to move downward, so that the connecting rod 52 hinged on the lifting rod 51 moves, and the upper end of the connecting rod 52 moves in the slide groove 61 on the bearing plate 6 in a direction away from the center line, so that the bearing plate 6 is pushed upward, so that the flange 81 of the valve 8 is pressed upward by the bearing plate 6 and clamped by the pressure rod 4, and then the pressure gas released in the control box 1 is discharged from the air outlet 64 through the air pipe 21 into the valve 8, so that the valve 8 is calibrated; A sealing pad 62 is installed on the bearing plate 6. At the same time, since a lever structure is formed between the connecting rod 52 and the bracket rod 521, and the connecting rod 52 is evenly distributed around the center line of the bearing plate 6, the bearing plate 6 is subjected to balanced force when being pushed up, and a large upward pushing force can be generated without using an overly large clamping cylinder 5. The compression rods 4 overlap each other to form a mutual support structure, that is, the compression rods 4 are combined into a whole. After the bearing plate 6 lifts up the flange 81, the force of the flange 81 on the compression rods 4 is evenly distributed to the shaft rods 41 connected to each compression rod 4, and the force on the shaft rod 41 is vertically upward; The surfaces of the pressure rods 4 overlapping each other are roughened, and the friction between the pressure rods 4 after overlapping each other is relatively large; The pressure rod 4 clamps and fixes the flange 81 of the valve 8 by overlapping each other, and the distance between the rotating shaft rod 41 on the pressure rod 4 and the center of the clamp plate 3 is relatively large, so that the area on the clamp plate 3 or the carrier plate 6 where the flange 81 can be placed is relatively large, and valves 8 of different nominal diameters can be calibrated. At the same time, the valve 8 is clamped and fixed by the pressure rod 4, so that the fixing mechanism of the valve 8 is relatively simple, which is convenient for clamping and fixing the valve 8; The rotating shaft rod 41 and the pressure rod 4 can move up and down within the range of the movable gap h. When the staff rotates the pressure rod 4, there is a gap between the pressure rods 4 in the vertical direction, which facilitates the mutual overlap between the pressure rods 4. During the calibration process, as the bearing plate 6 drives the flange 81 to push upward, the pressure rods 4 will move in the vertical direction, so that the pressure rods 4 contact each other and begin to overlap; During the calibration process, the buffer layer 44 installed on the lower surface of the clamping end 42 of the pressure rod 4 will contact the surface of the flange 81 to avoid hard contact between the pressure rod 4 and the flange 81; Since the size of the movable gap h is equal to the thickness of the buffer layer 44, while ensuring that the pressure rods 4 can easily move to overlap each other, the distance that the bearing plate 6 drives the flange 81 to move upward is relatively short; After the pressure rods 4 rotate to the top of the flange 81 and overlap each other, the positions of the pressure rods 4 can be relatively stable due to the mutual attraction between the magnetic blocks 45, so that the pressure rods 4 remain in an overlapping state; Since the edge area 442 on the buffer layer 44 is covered with a polytetrafluoroethylene layer and the thickness of the edge area 442 is greater than the thickness of the recessed area 441, the edge area 442 first contacts the surface of the flange 81, and the area of ​​the edge area 442 is much smaller than the area of ​​the recessed area 441, thereby reducing the friction between the buffer layer 44 and the surface of the flange 81 when the pressure rod 4 is rotated; During the valve 8 calibration process, the buffer layer 44 is squeezed and deformed, so that the edge area 442 and the recessed area 441 are attached to the surface of the flange 81, and the friction between the recessed area 441 and the surface of the flange 81 is relatively large; When the bearing plate 6 drives the flange 81 to push upward and the pressure rod 4 squeezes and presses the flange 81, the flange 81 will be tightly attached to the sealing gasket 62, and the elastic bag 63 will also be squeezed, thereby forming a region with greater pressure on the sealing gasket 62, thereby improving the sealing performance between the sealing gasket 62 and the flange 81; When placing the valve 8 to be tested on the carrier plate 6, the upper end of the limiting rod 7 will be inserted into the valve port on the valve 8. Then, as the valve 8 descends, the end of the guide rod 71 will contact the inner wall of the valve port. With the uniform distribution of the limiting rods 7 around the center line, the valve 8 is positioned by the guide rod 71 and the limiting rod 7, so that the center line of the valve port on the valve 8 coincides with the center line of the carrier plate 6. The guide rod 71 is used to position the valve 8 during placement, so that the valve 8 can be accurately placed in the middle of the carrier plate 6. When the pressure rod 4 is rotated to reach the top of the flange 81 and the side of the pressure rod 4 contacts the surface of the valve 8 on the flange 81, each pressure rod 4 can be relatively evenly distributed on the flange 81, that is, the center line of the flange 81 and the valve 8 is located in the middle of the area surrounded by each pressure rod 4, so that the flange 81 and the pressure rod 4 can be evenly and balanced during the calibration process. A smooth head 711 made of polytetrafluoroethylene is installed at the end of the guide rod 71, so that the friction between the guide rod 71 and the inner wall of the valve port is relatively small; When calibrating valves 8 with a large difference in nominal diameters, the staff loosens the bolts with a tool, adjusts the angle between the guide rod 71 and the limiting rod 7 or replaces the guide rod 71 with a longer length, and then retightens the bolts to lock the guide rod 71 and the limiting rod 7 together, so as to adapt to the calibration of valves 8 with different nominal diameters; An interception net 641 is installed in the air outlet 64 to prevent external dust and impurities from entering the air outlet 64 and the air pipe 21. At the same time, before placing the valve 8 on the inspection table, the interception net 641 is removed and the dust and impurities therein are cleaned.

[0028] The above shows and describes the basic principles, main features and advantages of the present invention. It should be understood by those skilled in the art that the present invention is not limited to the above embodiments. The above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A mobile valve component inspection platform, comprising a control box (1) and a inspection box (2), wherein the control box (1) and the inspection box (2) are connected to each other via a quick-connect pipe; Features: A through hole (31) is provided in the middle of the clamping plate (3), a bearing plate (6) is installed in the through hole (31), a clamping cylinder (5) is installed in the inspection box (2), a connecting rod (52) is hingedly installed on the lifting rod (51) on the clamping cylinder (5), a support rod (521) is installed in the through hole (31), the support rod (521) and the connecting rod (52) are hingedly connected, a sliding groove (61) is provided on the lower surface of the bearing plate (6), the upper end of the connecting rod (52) is slidably installed in the sliding groove (61), an air outlet (64) is provided on the bearing plate (6), and the lower end of the air outlet (64) is connected to the air pipe (21); The inspection box (2) is provided with a fixture plate (3), a rotating shaft rod (41) is rotatably provided on the fixture plate (3), a pressure rod (4) is provided on the rotating shaft rod (41), and at least three groups of the pressure rods (4) are provided, and the pressure rods (4) are overlapped with each other; A sealing gasket (62) is installed on the bearing plate (6), and the pressure rod (4) clamps the flange (81) on the valve to be tested (8) on the bearing plate (6). The overlapping surfaces of the pressure rod (4) are roughened.

2. According to claim 1, a mobile valve component inspection platform is characterized in that: A retaining ring (411) is installed on the rotating shaft rod (41), and there is an active gap (h) between the retaining ring (411) and the upper surface of the clamping plate (3), and the rotating shaft rod (41) slides up and down in the vertical direction within the range of the active gap (h).

3. According to claim 2, a mobile valve component inspection platform is characterized in that: The pressure rod (4) comprises a clamping end (42) and a lap end (43), wherein the clamping end (42) is used to press the flange (81) of the valve to be tested (8); A buffer layer (44) is installed on the lower surface of the clamping end (42), and the thickness of the buffer layer (44) is equal to the value of the active gap (h); Magnetic blocks (45) are installed on the lower surface of the overlapping end (43) and the upper surface of the clamping end (42), and the magnetic blocks (45) attract each other.

4. A mobile valve component inspection platform according to claim 3, characterized in that: The buffer layer (44) is provided with an edge area (442) and a recessed area (441) in sequence from the edge to the middle, the thickness of the edge area (442) is greater than the thickness of the recessed area (441), the surface of the edge area (442) is covered with a polytetrafluoroethylene layer, and the surface of the recessed area (441) is roughened.

5. The mobile valve component inspection platform according to claim 1, characterized in that: An elastic bag (63) is installed in the sealing gasket (62), and the elastic bag (63) is close to the surface of the sealing gasket (62) close to the flange (81).

6. The mobile valve component inspection platform according to claim 1, characterized in that: A plurality of groups of limiting rods (7) are installed on the bearing plate (6), a common guide rod (71) is installed on the limiting rods (7), and the guide rod (71) is elastic; The end of the guide rod (71) contacts the inner wall of the valve port on the valve to be detected (8), and the limiting rods (7) are evenly distributed around the center line of the bearing plate (6).

7. The mobile valve component inspection platform according to claim 6, characterized in that: A smooth head (711) is installed at the end of the guide rod (71), and the smooth head (711) is made of polytetrafluoroethylene material; The guide rod (71) and the limiting rod (7) are fixedly connected by bolts, and the angle between the guide rod (71) and the limiting rod (7) is adjusted after the bolts are loosened.

8. The mobile valve component inspection platform according to claim 5, characterized in that: An interception net (641) is movably installed at the air outlet (64), and an adsorption fluff layer is arranged on the surface of the interception net (641).

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