An automated testing device and method for the sealing performance of precision valves

Abstract

The present invention discloses an automatic detection device and method for the sealing performance of precision valves, comprising: a machine body, a placing rack being installed on a side of which; a detection mechanism being arranged on the placing rack; the detection mechanism comprising a lower plate body fixedly arranged on the top of the placing rack, an upper plate body located on the top of the lower plate body, and pillars fixedly arranged at four corners between the two; a mounting plate is movably sleeved on two pillars located at the rear, and a blocking mechanism is arranged in the detection mechanism, and the blocking mechanism comprises: a clamping assembly horizontally arranged between the upper plate body and the lower plate body, and the clamping assembly and the mounting plate are movably interpenetrating; in the present invention, the introduction of a blocking cylinder effectively solves the problems of low efficiency and insufficient automation in the traditional manual blocking method, and in order to prevent the valve that has been installed in place from being accidentally ejected due to the pressure during the blocking process, a clamping assembly is designed, and the clamping assembly can tightly fit and limit the blocked valve.

Description

Technical Field

[0001] The present invention belongs to the technical field of precision valve sealing detection, and in particular relates to an automatic precision valve sealing detection device and detection method. Background Art

[0002] From an industrial perspective, the application of precision valve sealing automatic detection devices is of great significance. In industrial production, valves are key components of fluid control, and their sealing performance is directly related to the safe and stable operation of the entire production line. The precision valve sealing automatic detection device is an important device for detecting valve sealing performance in the field of industrial automation. This device uses automated technical means to efficiently and accurately detect the sealing of valves, thereby ensuring that the quality and performance of the valves meet the strict requirements of industrial production. Therefore, the precision valve sealing automatic detection device is an indispensable and important equipment in the field of industrial automation. Its application will help improve industrial production efficiency, reduce production costs, improve product quality and safety, and provide strong support for the sustainable development of industrial production.

[0003] In the industrial field, the sealing test of precision valves occupies a pivotal position, and its quality is directly related to the safety, stability and operational reliability of the entire fluid control system. At present, the traditional sealing test method mainly relies on sealing the upper and lower ends of the valve, and then filling the valve with gas or liquid medium to evaluate its sealing performance. Although this method can reveal the sealing condition of the valve to a certain extent, when facing T-type valves, because the T-type valve contains a vertical port on the side, conventional testing equipment can only achieve the sealing of the upper and lower ports, and the vertical port on the side has to rely on manual sealing. This link not only increases the workload of operators, but also inevitably affects the efficiency of the testing work. More importantly, it leads to a significant reduction in the degree of automation of the entire testing process, which is difficult to adapt to the urgent needs of modern industry for automation technology. Summary of the invention

[0004] The purpose of the present invention is to provide an automated detection device and method for the sealing of precision valves, so as to solve the problems mentioned in the above background technology that the current automated detection device cannot completely seal the valve ports of "T"-shaped valves, has a low degree of automation, and is inconvenient for manual operation.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: an automatic detection device for the sealing performance of precision valves, comprising: a body, a placing rack is installed on the side of which; a detection mechanism is arranged on the placing rack; the detection mechanism comprises a lower plate body fixedly arranged on the top of the placing rack, an upper plate body located on the top of the lower plate body, and pillars fixed at the four corners between the two; a mounting plate is movably sleeved on two pillars at the rear position, and a blocking mechanism is arranged in the detection mechanism, and the blocking mechanism comprises: a clamping assembly horizontally arranged between the upper plate body and the lower plate body, and the clamping assembly and the mounting plate are movably penetrated; a lifting assembly, composed of a driving part and a connecting part, wherein the driving part is arranged as a whole on the inner side of the bottom of the placing rack, and the connecting part rotates around its own axis. The connecting part rotates and penetrates with threads at both ends of the mounting plate, and the bottom of the connecting part is transmission-connected with the driving part. In use, the connecting part is driven to rotate by the driving part, and the mounting plate is lifted and lowered by the rotation of the connecting part. When the mounting plate is lifted and lowered, the clamping assembly will be driven to lift and lower synchronously; an alignment assembly is placed between the mounting plate and the clamping assembly, and the alignment assembly is rotationally connected to the clamping assembly, and moves horizontally towards or away from the clamping assembly under the horizontal reciprocating motion of the clamping assembly; and when the clamping assembly is lifted and lowered, it moves synchronously with the clamping assembly; a transmission assembly is located between the alignment assembly and the mounting plate, and the transmission assembly includes an annular collar, and an integrated fixing plate is fixed on both sides of the collar, and the ends of the fixing plate are connected to telescopic rods through rotating shafts. A fixing rod is also fixed to the bottom end surface of the upper plate body, and the top of one end of the telescopic rod connected to the fixing plate is penetrated by the fixing rod, and the other end of the telescopic rod is rotatably connected to the clamping assembly. Therefore, when the clamping assembly is lifted or lowered, the transmission assembly will also be lifted or lowered synchronously. The telescopic rod is a conventional telescopic rod on the market, one end of which is rotatably connected to the fixing plate, and the other telescopic end is rotatably connected to the connecting rod. Through the telescopic characteristics, it can be ensured that the telescopic rod can follow the position change of the connecting rod during rotation, adjust its own length, and avoid the occurrence of movement obstacles; a blocking cylinder, whose output shaft penetrates the middle position of the mounting plate and extends to the area between the mounting plate and the clamping assembly. A plug is also installed on the end face of the output shaft of the blocking cylinder to block the valve. When the plugging cylinder is extended, the plugging cylinder drives the plug to move toward the valve mouth, thereby realizing the plugging operation; the collar is fixedly arranged on the output shaft of the plugging cylinder, and when the plugging cylinder is extended, the collar will be driven to move synchronously. At this time, the collar will drive the fixed plate to follow the plugging cylinder to make a synchronous extension movement. Since one end of the telescopic rod is penetrated by the fixed rod, when the fixed plate drives the telescopic rod to rotate by rotating, it will drive the telescopic rod to rotate around the axis of the fixed rod. At this time, the end of the telescopic rod connected to the clamping assembly will move in the opposite direction of the extension of the plugging cylinder, thereby driving the entire clamping assembly to move in the opposite direction of the extension of the plugging cylinder. At this time, the clamping assembly will clamp the valve placed in the lower plate body to ensure that the valve position will not be offset when the plug is used for blocking.

[0006] As a preferred technical solution in the present invention, the clamping assembly includes a support ring with an arc-shaped structure, and connecting rods installed at both ends of the inner side of the support ring. The connecting rod is movably penetrated by the mounting plate, and the other end of the telescopic rod is rotationally connected to the inner wall of the connecting rod through a rotating shaft. When clamping the valve, the clamping is achieved through the support ring.

[0007] As a preferred technical solution in the present invention, a boss is fixed to the outer side of the end of the connecting rod, and a tension spring is installed between the boss and the rear side of the mounting plate. When the connecting rod is moved in the opposite direction of the extension of the blocking cylinder by the telescopic rod, the connecting rod will stretch the tension spring through the boss. Later, when the blocking cylinder retracts, the entire transmission assembly will push the connecting rod back to its original position in the reverse running state when the blocking cylinder is extended. At this time, the elastic force of the tension spring can be used to ensure the smooth return of the clamping assembly, thereby preventing the telescopic rod from being unable to recover to the initial expanded state when the blocking cylinder is extended.

[0008] As a preferred technical solution in the present invention, the alignment component includes a linear slide rail symmetrically fixedly arranged on the rear side of the bottom end surface of the upper plate body and the rear side of the top end surface of the lower plate body, each linear slide rail is provided with two sliding blocks, and two alignment plates are arranged in the linear slide rail, and both ends of each alignment plate are fixed on the sliding block; the outer wall of the alignment plate is provided with a plate-shaped connecting rod, one end of the plate-shaped connecting rod is equipped with a rotating shaft, which is connected to the alignment plate, and the other end extends toward the direction of the connecting rod in an inclined manner, and is connected to the inner wall of the connecting rod through a rotating clock. When the blocking cylinder is extended, the connecting rod will move toward the direction of the blocking cylinder under the drive of the transmission component, that is, the end of the connecting rod moves toward the direction of the blocking cylinder, and at this time the connecting rod will drive the other end of the plate-shaped connecting rod to rotate. And it gradually changes from the initial inclined state to the horizontal state. At this time, the distance between the alignment plate and the connecting rod will be tightened by the plate-like connecting rod which gradually becomes horizontal, and will move closer to the middle position of the linear slide rail. When placing the valve, the position of the valve port to be closed may not correspond to the position of the plug. At this time, the position of the valve port can be corrected by the alignment plate which moves closer to the middle of the linear slide rail synchronously to ensure the later blocking. At the same time, since the alignment assembly is closer to the valve port than the transmission assembly, the position of the valve port can be adjusted before blocking and clamping. A sliding groove is provided on the outer wall of the alignment plate, and the rotating shaft at one end of the plate-like connecting rod is slidably arranged in the sliding groove, so that during the lifting and lowering of the clamping assembly, the plate-like connecting rod can be always connected to the alignment plate and the normal rotation can be not affected.

[0009] As a preferred technical solution in the present invention, a placement seat is installed at the top center position of the lower plate body, and a pressurized cylinder is installed at the top of the upper plate body, the output end of the pressurized cylinder passes through the upper plate body, the center of the output end of the pressurized cylinder and the center of the placement seat are on the same vertical line, wherein the placement seat is connected to the high-pressure air pump inside the body, and in the inspection of the valve, the valve is first placed on the placement seat, and then the top of the valve is pressed tightly through the output end of the pressurized cylinder, and then gas is injected from the placement seat, so as to realize the inspection of the internal sealing of the valve. Since this technology is existing, it will not be further elaborated here; the output end of the pressurized cylinder is in the inner area of ​​the clamping component.

[0010] As a preferred technical solution in the present invention, the connecting part includes a screw rod passing through both ends of the mounting plate, and a bevel gear 1 fixed at the bottom end of the screw rod. The bevel gear 1 is placed on the inner side of the bottom of the placement rack and meshes with the driving part for transmission. The driving part drives the bevel gear 1 to rotate, and then the bevel gear 1 drives the mounting plate to rise and fall, thereby realizing the lifting and lowering of the clamping assembly, the alignment assembly, the transmission assembly, and the sealing cylinder.

[0011] As a preferred technical solution in the present invention, the driving part includes a servo motor installed on the inner side of the bottom of the placement rack, and a transmission shaft installed on the output end of the servo motor. A bevel gear 2 is fixedly provided on the transmission shaft. The bevel gear 2 is meshed with the bevel gear 1 for transmission. The servo motor drives the bevel gear 1 and the bevel gear 2 to rotate synchronously, and then the bevel gear 2 drives the two bevel gears 1 and the screw rod to rotate synchronously, thereby realizing lifting and lowering.

[0012] As a preferred technical solution in the present invention, a mounting frame is also fixedly provided on the inner side of the bottom of the placement rack, and the end of the transmission shaft is inserted into the mounting frame. The mounting frame is used to overlap the end of the transmission shaft to provide supporting force.

[0013] As a preferred technical solution in the present invention, a connecting block is fixedly provided at the end of the output shaft of the sealing cylinder, and a groove corresponding to the connecting block is opened on the end face of the plug. The installation of the plug is achieved by engaging from top to bottom in the vertical direction. At the same time, the installation in this direction is perpendicular to the direction during sealing, so the plug will not fall off.

[0014] The present invention also discloses a precision valve sealing detection method, including an automated detection device, and the specific detection method is as follows:

[0015] Step 1: According to the height of the valve port on the side of the valve to be tested, set the overall lifting height of the lifting assembly. Here, the electronic equipment inside the body can be used in conjunction with the set program. This is the existing technology and will not be described in detail.

[0016] Step 2: Place the valve to be tested on the placement seat, and the pressurized cylinder descends synchronously to initially limit the top position of the valve. At this time, the valve can achieve rotational motion under the action of external force;

[0017] Step 3: After the upper and lower valve ports of the valve are blocked, the heights of the clamping assembly, the alignment assembly, the transmission assembly, and the blocking cylinder are adjusted synchronously according to the height of the valve port on the side of the valve. During the adjustment, the servo motor is started to drive the transmission shaft and the second bevel gear to rotate through the servo motor, and the second bevel gear is meshed with the first bevel gear to drive the screw to rotate. When the screw rotates, it drives the mounting plate to rise and fall, thereby completing the height adjustment of the clamping assembly, the alignment assembly, the transmission assembly, and the blocking cylinder;

[0018] Step 4: Start the plugging cylinder, and use the plugging cylinder to move the plug toward the vertical valve port on the side of the valve. During the movement, the collar and the fixed plate on the output shaft of the plugging cylinder move synchronously. The fixed plate drives the telescopic rod to rotate by rotating, thereby driving the telescopic rod to rotate around the axis of the fixed rod. At this time, the end of the telescopic rod connected to the connecting rod will move in the opposite direction of the extension of the plugging cylinder, thereby driving the entire clamping assembly to move in the opposite direction of the extension of the plugging cylinder. At the same time, the connecting rod will synchronously drive the other end of the plate-like connecting rod to rotate, and gradually change the plate-like connecting rod from the initial inclined state to the horizontal state, so that the distance between the alignment plate and the connecting rod will be under the pressure of the plate-like connecting rod that gradually becomes horizontal, and move toward the middle position of the linear slide rail. The valve port position is corrected by the alignment plate that is synchronously moving toward the middle of the linear slide rail to ensure subsequent blocking. The support ring at the rear position of the alignment assembly will hold the valve placed on the placement seat after the valve port is aligned with the plug, ensuring that the valve position will not be offset when the plug is blocked.

[0019] Compared with the prior art, the present invention has the following beneficial effects:

[0020] In the present invention, the introduction of the plugging cylinder effectively solves the problems of low efficiency and insufficient automation in the traditional manual plugging method. At the same time, in order to prevent the installed valve from being accidentally ejected due to pressure during the plugging process, a corresponding clamping component is designed. The clamping component can tightly fit and limit the blocked valve to ensure its stability. The clamping component and the plugging cylinder are synchronously lifted and lowered, so that the necessary support can be accurately provided in the key area where the valve is blocked by pressure, effectively preventing the displacement of the valve. In addition, in order to further improve the accuracy of the plugging, the present invention also adds a positioning component. Before the plugging operation begins, the positioning component can automatically adjust the vertical position of the T-type valve to ensure that the plugging cylinder can drive the plug to accurately and correctly plug the valve, thereby effectively avoiding various problems that may be caused by misalignment of the plugging. This design not only improves the accuracy and reliability of the plugging, but also provides a strong guarantee for the efficient operation of the entire detection process. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is a schematic diagram of the overall structure of the automatic detection device for sealing of precision valves;

[0022] Figure 2 is a structural schematic diagram of the blocking mechanism;

[0023] Figure 3 It is a schematic diagram of the blocking mechanism and its placement in the installation;

[0024] Figure 4 It is a schematic diagram of the position arrangement of the clamping component, the alignment component and the transmission component;

[0025] Figure 5 It is a schematic diagram of the connection between the clamping component and the blocking cylinder;

[0026] Figure 6 It is a schematic diagram of the structure of the plugging cylinder and the plug in a separated state;

[0027] Figure 7 This is a bottom view of the precision valve sealing automatic detection device in the rear view state;

[0028] Figure 8 for Figure 7 Schematic enlargement of area A.

[0029] In the figure:

[0030] 100, machine body; 101, mounting frame; 102, mounting plate;

[0031] 200, detection mechanism; 201, pressurized cylinder; 202, upper plate; 203, support; 204, lower plate; 205, placement seat;

[0032] 300, holding assembly; 301, supporting ring; 302, connecting rod; 302a, convex column; 302b, tension spring;

[0033] 400, lifting assembly; 401, servo motor; 402, bevel gear 1; 403, bevel gear 2; 404, transmission shaft; 405, lead screw; 406, mounting bracket;

[0034] 500, alignment assembly; 501, linear guide rail; 502, alignment plate; 502a, slide groove; 503, plate-shaped connecting rod;

[0035] 600, transmission assembly; 601, collar; 602, fixing plate; 603, telescopic rod; 604, fixing rod;

[0036] 700, sealing cylinder; 700a, connecting block; 701, plug. DETAILED DESCRIPTION

[0037] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0038] See also Figures 1 to 8 The present invention provides a technical solution: an automatic detection device for sealing of precision valves, comprising:

[0039] The machine body 100 has a placement rack 101 installed on its side;

[0040] The detection mechanism 200 is arranged on the placement rack 101;

[0041] The detection mechanism 200 includes a lower plate 204 fixed on the top of the placement rack 101, an upper plate 202 located on the top of the lower plate 204, and pillars 203 fixed at the four corners between the two.

[0042] The two pillars 203 at the rear position are movably sleeved with a mounting plate 102, and a blocking mechanism is provided in the detection mechanism 200, which includes:

[0043] The clamping assembly 300 is horizontally disposed between the upper plate body 202 and the lower plate body 204, and the clamping assembly 300 and the mounting plate 102 are movably interpenetrating;

[0044] The lifting assembly 400 is composed of a driving part and a connecting part, wherein the driving part is placed on the inner side of the bottom of the placement frame 101 as a whole, and the connecting part rotates around its own axis and penetrates through the threads at both ends of the mounting plate 102, and the bottom of the connecting part is connected to the driving part by transmission. In use, the driving part drives the connecting part to rotate, and the mounting plate 102 is lifted and lowered by the rotation of the connecting part. When the mounting plate 102 is lifted and lowered, the clamping assembly 300 is driven to be lifted and lowered synchronously;

[0045] The alignment component 500 is disposed between the mounting plate 102 and the clamping component 300. The alignment component 500 is rotatably connected to the clamping component 300 and moves horizontally toward or away from the clamping component 300 under the horizontal reciprocating motion of the clamping component 300. When the clamping component 300 is lifted or lowered, the alignment component 500 moves synchronously with the clamping component 300.

[0046] The transmission assembly 600 is located between the alignment assembly 500 and the mounting plate 102. The transmission assembly 600 includes an annular collar 601. An integrated fixing plate 602 is fixed on both sides of the collar 601. The ends of the fixing plate 602 are connected to a telescopic rod 603 through a rotating shaft. A fixing rod 604 is also fixed to the bottom end surface of the upper plate body 202. The top of one end of the telescopic rod 603 connected to the fixing plate 602 is penetrated by the fixing rod 604, and the other end of the telescopic rod 603 is rotatably connected to the clamping assembly 300. Therefore, when the clamping assembly 300 is raised or lowered, the transmission assembly 600 will also be raised or lowered synchronously. The telescopic rod 603 is a conventional telescopic rod on the market, one end of which is rotatably connected to the fixing plate 602, and the other telescopic end is rotatably connected to the connecting rod 302. Through the telescopic characteristics, it can be ensured that the telescopic rod 603 can follow the position change of the connecting rod 302 during rotation, adjust its own length, and avoid the occurrence of movement obstacles.

[0047] The output shaft of the plugging cylinder 700 passes through the middle of the mounting plate 102 and extends to the area between the mounting plate 102 and the clamping assembly 300. A plug 701 is also installed on the end face of the output shaft of the plugging cylinder 700. When the valve is plugged, the plugging cylinder 700 drives the plug 701 to move toward the valve port, thereby achieving the plugging operation. The collar 601 is fixed on the output shaft of the plugging cylinder 700. When the plugging cylinder 700 is extended, the collar 601 is synchronously driven to move. At this time, the collar 601 drives the fixing plate 602 to follow the plugging cylinder 700 for synchronous extension. Since one end of the telescopic rod 603 is penetrated by the fixed rod 604, when the fixed plate 602 drives the telescopic rod 603 to rotate by rotating, the telescopic rod 603 will be driven to rotate around the axis of the fixed rod 604. At this time, the end of the telescopic rod 603 connected to the clamping assembly 300 will move in the opposite direction of the extension of the blocking cylinder 700, thereby driving the entire clamping assembly 300 to move in the opposite direction of the extension of the blocking cylinder 700. At this time, the clamping assembly 300 will clamp the valve placed in the lower plate body 204 to ensure that the valve position will not be offset when it is blocked by the plug 701.

[0048] In this embodiment, the clamping assembly 300 includes a support ring 301 with an arc-shaped structure, and connecting rods 302 installed at both ends of the inner side of the support ring 301. The connecting rod 302 is movably penetrated by the mounting plate 102, and the other end of the telescopic rod 603 is rotationally connected to the inner wall of the connecting rod 302 through a rotating shaft. When clamping the valve, the clamping is achieved through the support ring 301.

[0049] In this embodiment, a boss 302a is fixed to the outer side of the end of the connecting rod 302, and a tension spring 302b is installed between the boss 302a and the rear side of the mounting plate 102, wherein one end of the tension spring 302b is sleeved on the boss 302a, and the other end is fixed to the mounting plate 102, and can be fixed by welding. When the connecting rod 302 is moved in the opposite direction of the extension of the blocking cylinder 700 by the telescopic rod 603, the connecting rod 302 will stretch the tension spring 302b through the boss 302a. Later, when the blocking cylinder 700 retracts, the entire transmission assembly 600 will push the connecting rod 302 back to its original position in the reverse running state when the blocking cylinder 700 is extended. At this time, the elastic force of the tension spring 302b can be used to ensure the smooth return of the clamping assembly 300, thereby preventing the telescopic rod 603 from being unable to recover to the initial expanded state when the blocking cylinder 700 is extended.

[0050] In this embodiment, the alignment component 500 includes a linear slide rail 501 symmetrically fixed on the rear side of the bottom end surface of the upper plate body 202 and the rear side of the top end surface of the lower plate body 204. Each linear slide rail 501 is provided with two sliders, and two alignment plates 502 are provided in the linear slide rail 501. Both ends of each alignment plate 502 are fixed on the slider; the outer wall of the alignment plate 502 is provided with a plate-shaped connecting rod 503, one end of which is equipped with a rotating shaft, which is connected to the alignment plate 502, and the other end extends in an inclined manner toward the direction of the connecting rod 302, and is connected to the inner wall of the connecting rod 302 through the rotating shaft. When the blocking cylinder 700 is extended, the connecting rod 302 will move toward the direction of the blocking cylinder 700 under the drive of the transmission component 600, that is, the end of the connecting rod 302 moves toward the direction of the blocking cylinder 700, and at this time, the connecting rod 302 will drive the other end of the plate-shaped connecting rod 503 to rotate. And it gradually changes from the initial inclined state to the horizontal state. At this time, the distance between the alignment plate 502 and the connecting rod 302 will be close to the middle position of the linear slide rail 501 under the pressure of the plate-like connecting rod 503 which gradually becomes horizontal. When placing the valve, the position of the valve port to be closed may not correspond to the position of the plug 701. At this time, the position of the valve port can be corrected by the alignment plate 502 which is synchronously close to the middle of the linear slide rail 501 to ensure the later blocking. At the same time, since the alignment component 500 is closer to the valve port than the transmission component 600, the position of the valve port can be adjusted before blocking and clamping; the outer wall of the alignment plate 502 is provided with a slide groove 502a, and the rotating shaft at one end of the plate-like connecting rod 503 is slidably arranged in the slide groove 502a, so that during the lifting and lowering of the clamping component 300, it can be ensured that the plate-like connecting rod 503 is always connected to the alignment plate 502 and the normal rotation is not affected.

[0051] In this embodiment, a placement seat 205 is installed at the top center position of the lower plate body 204, and a pressurized cylinder 201 is installed at the top of the upper plate body 202, and the output end of the pressurized cylinder 201 passes through the upper plate body 202, and the center of the output end of the pressurized cylinder 201 and the center of the placement seat 205 are on the same vertical line, wherein the placement seat 205 is connected to the high-pressure air pump inside the body 100. In the inspection of the valve, the valve is first placed on the placement seat 205, and then the top of the valve is pressed tightly through the output end of the pressurized cylinder 201, and then gas is injected from the placement seat 205 to realize the inspection of the internal sealing of the valve. Since this technology is existing, it will not be further elaborated here; the output end of the pressurized cylinder 201 is in the inner area of ​​the clamping assembly 300.

[0052] In this embodiment, the connecting part includes a screw rod 405 passing through both ends of the mounting plate 102, and a bevel gear 402 fixed at the bottom end of the screw rod 405. The bevel gear 402 is placed on the inner side of the bottom of the placement frame 101 and meshes with the driving part for transmission. The driving part drives the bevel gear 402 to rotate, and then the bevel gear 402 drives the mounting plate 102 to rise and fall, thereby realizing the lifting and lowering of the clamping assembly 300, the alignment assembly 500, the transmission assembly 600, and the sealing cylinder 700.

[0053] In this embodiment, the driving part includes a servo motor 401 installed on the inner side of the bottom of the placement rack 101, and a transmission shaft 404 installed on the output end of the servo motor 401. A bevel gear 2 403 is fixedly provided on the transmission shaft 404. The bevel gear 2 403 is meshed with the bevel gear 1 402 for transmission. The servo motor 401 drives the bevel gear 1 402 and the bevel gear 2 403 to rotate synchronously, and then the bevel gear 2 403 drives the two bevel gears 1 402 and the screw 405 to rotate synchronously, thereby realizing lifting.

[0054] In this embodiment, a mounting frame 406 is fixedly provided on the inner side of the bottom of the placement frame 101, and the end of the transmission shaft 404 is inserted into the mounting frame 406. The mounting frame 406 is used to overlap the end of the transmission shaft 404 to provide support force.

[0055] In this embodiment, a connecting block 700a is fixedly provided at the end of the output shaft of the sealing cylinder 700, and a groove corresponding to the connecting block 700a is opened on the end face of the plug 701. The installation of the plug 701 is achieved by engaging from top to bottom in the vertical direction. At the same time, the installation in this direction is perpendicular to the direction during sealing, so the plug 701 will not fall off.

[0056] The present invention also discloses a precision valve sealing detection method, including an automated detection device, and the specific detection method is as follows:

[0057] Step 1: According to the height of the valve port on the side of the valve to be tested, set the overall lifting height of the lifting assembly 400. Here, the electronic equipment inside the body 100 can be used in conjunction with the set program. This is the existing technology and will not be described in detail.

[0058] Step 2: Place the valve to be tested on the placement seat 205, and the pressurized cylinder 201 descends synchronously to perform a preliminary limit on the top position of the valve. At this time, the valve can achieve rotational motion under the action of external force;

[0059] Step 3: After the upper and lower valve ports of the valve are blocked, the heights of the clamping assembly 300, the alignment assembly 500, the transmission assembly 600, and the blocking cylinder 700 are adjusted synchronously according to the height of the valve port on the side of the valve. During the adjustment, the servo motor 401 is started, and the transmission shaft 404 and the second bevel gear 403 are driven to rotate by the servo motor 401, and the second bevel gear 403 is engaged with the transmission bevel gear 1 402, thereby driving the screw rod 405 to rotate. When the screw rod 405 rotates, it drives the mounting plate 102 to rise and fall, thereby completing the height adjustment of the clamping assembly 300, the alignment assembly 500, the transmission assembly 600, and the blocking cylinder 700;

[0060] Step 4: Start the plugging cylinder 700, and use the plugging cylinder 700 to move the plug 701 toward the vertical valve port on the side of the valve. During the movement, the collar 601 and the fixed plate 602 on the output shaft of the plugging cylinder 700 move synchronously. The fixed plate 602 drives the telescopic rod 603 to rotate by rotating, thereby driving the telescopic rod 603 to rotate around the axis of the fixed rod 604. At this time, the end of the telescopic rod 603 connected to the connecting rod 302 will move in the opposite direction of the extension of the plugging cylinder 700, thereby driving the entire clamping assembly 300 to move in the opposite direction of the extension of the plugging cylinder 700. At the same time, the connecting rod 302 will synchronously drive the plate-shaped connecting rod 302 to rotate. The other end of the rod 503 rotates and changes the plate-like connecting rod 503 from its initial inclined state to a horizontal state gradually, so that the distance between the alignment plate 502 and the connecting rod 302 will be tightened and moved toward the middle position of the linear slide rail 501 under the pressure of the plate-like connecting rod 503 which gradually becomes horizontal. The valve port position is corrected by the alignment plate 502 which is synchronously moved toward the middle of the linear slide rail 501 to ensure subsequent blocking. The support ring 301 at the rear position of the alignment assembly 500 will hold the valve placed on the placement seat 205 after the valve port is aligned with the plug 701, to ensure that the valve position will not be offset when blocked by the plug 701.

[0061] Although embodiments of the present invention have been shown and described (see the above detailed description for details), it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An automatic detection device for sealing of precision valves, comprising: A machine body (100) having a placement rack (101) installed on its side; A detection mechanism (200) is arranged on the placement rack (101); The detection mechanism (200) comprises a lower plate body (204) fixedly mounted on the top of a placement rack (101), an upper plate body (202) located on the top of the lower plate body (204), and pillars (203) fixedly mounted at four corners between the two. Features: A mounting plate (102) is movably sleeved on the two pillars (203) at the rear position, and a blocking mechanism is arranged in the detection mechanism (200), the blocking mechanism comprising: A clamping assembly (300) is horizontally arranged between the upper plate body (202) and the lower plate body (204), and the clamping assembly (300) and the mounting plate (102) are movably interpenetrating; The lifting assembly (400) is composed of a driving part and a connecting part, wherein the driving part is placed on the inner side of the bottom of the placement frame (101) as a whole, the connecting part rotates around its own axis and penetrates through the threads at both ends of the mounting plate (102), and the bottom of the connecting part is drivingly connected to the driving part; An alignment component (500) is disposed between the mounting plate (102) and the clamping component (300); the alignment component (500) is rotationally connected to the clamping component (300) and performs horizontal movement of approaching or separating under the horizontal reciprocating movement of the clamping component (300); A transmission assembly (600) is located between the alignment assembly (500) and the mounting plate (102), the transmission assembly (600) comprising an annular collar (601), an integral fixing plate (602) being fixedly arranged on both sides of the collar (601), the ends of the fixing plate (602) being connected to a telescopic rod (603) via a rotating shaft, a fixing rod (604) being further fixed to the bottom end surface of the upper plate body (202), the top of one end of the telescopic rod (603) being connected to the fixing plate (602) being penetrated by the fixing rod (604), and the other end of the telescopic rod (603) being rotatably connected to the clamping assembly (300); The plugging cylinder (700) has an output shaft that passes through the middle of the mounting plate (102) and extends to the area between the mounting plate (102) and the clamping assembly (300). A plug (701) is also installed on the end surface of the output shaft of the plugging cylinder (700); the collar (601) is fixedly mounted on the output shaft of the plugging cylinder (700); The clamping assembly (300) comprises a support ring (301) of an arc-shaped structure, and connecting rods (302) installed at both ends of the inner side surface of the support ring (301), the connecting rod (302) and the mounting plate (102) are movably interpenetrating, and the other end of the telescopic rod (603) is rotatably connected to the inner wall of the connecting rod (302) via a rotating shaft; The alignment component (500) comprises a linear slide rail (501) symmetrically fixed on the rear side of the bottom end surface of the upper plate body (202) and the rear side of the top end surface of the lower plate body (204), each linear slide rail (501) is provided with two sliders, and two alignment plates (502) are arranged in the linear slide rail (501), and both ends of each alignment plate (502) are fixed on the sliders; the outer wall of the alignment plate (502) is provided with a plate-shaped connecting rod (503), one end of the plate-shaped connecting rod (503) is installed with a rotating shaft, and the rotating shaft is connected to the alignment plate (502), and the other end extends in an inclined manner toward the direction of the connecting rod (302) and is connected to the inner wall of the connecting rod (302) through a rotating clock; the outer wall of the alignment plate (502) is provided with a sliding groove (502a), and the rotating shaft at one end of the plate-shaped connecting rod (503) is slidably arranged in the sliding groove (502a).

2. The automatic detection device for sealing of precision valves according to claim 1 is characterized in that: A convex column (302a) is also fixed on the outer side of the end of the connecting rod (302), and a tension spring (302b) is also installed between the convex column (302a) and the rear side surface of the mounting plate (102).

3. The automatic detection device for sealing performance of precision valves according to claim 1 is characterized in that: A placement seat (205) is installed at the top center of the lower plate body (204), and a pressurizing cylinder (201) is installed at the top of the upper plate body (202). The output end of the pressurizing cylinder (201) passes through the upper plate body (202), and the center of the output end of the pressurizing cylinder (201) and the center of the placement seat (205) are on the same vertical line; the output end of the pressurizing cylinder (201) is located in the inner area of ​​the clamping assembly (300).

4. The automatic detection device for sealing performance of precision valves according to claim 1 is characterized in that: The connecting part comprises a screw rod (405) passing through both ends of the mounting plate (102), and a bevel gear (402) fixed to the bottom end of the screw rod (405); the bevel gear (402) is placed on the inner side of the bottom of the placement frame (101) and meshes with the driving part for transmission.

5. The automatic detection device for sealing performance of precision valves according to claim 4 is characterized in that: The driving unit comprises a servo motor (401) mounted on the inner side of the bottom of the placement rack (101), and a transmission shaft (404) mounted on the output end of the servo motor (401), and a second bevel gear (403) is fixedly arranged on the transmission shaft (404), and the second bevel gear (403) is meshed with the first bevel gear (402) for transmission.

6. The automatic detection device for sealing performance of precision valves according to claim 5 is characterized in that: A mounting frame (406) is also fixedly provided on the inner side of the bottom of the placement frame (101), and the end of the transmission shaft (404) is inserted into the mounting frame (406).

7. The automatic detection device for sealing performance of precision valves according to claim 1 is characterized in that: A connecting block (700a) is fixedly provided at the end of the output shaft of the blocking cylinder (700), and a groove corresponding to the connecting block (700a) is provided on the end surface of the plug (701).

8. A method for detecting the sealing performance of a precision valve, comprising the automated detection device according to any one of claims 1 to 7, characterized in that: The specific detection methods are as follows: Step 1: according to the height of the valve port on the side of the valve to be tested, set the overall lifting height of the lifting assembly (400); Step 2: Place the valve to be tested on the placement seat (205), and the pressurized cylinder (201) descends synchronously to perform a preliminary limit on the top position of the valve. At this time, the valve can achieve rotational movement under the action of external force; Step 3: After the upper and lower valve ports of the valve are blocked, the heights of the clamping assembly (300), the alignment assembly (500), the transmission assembly (600), and the blocking cylinder (700) are adjusted synchronously according to the height of the valve port on the side of the valve. During the adjustment, the servo motor (401) is started, and the transmission shaft (404) and the second bevel gear (403) are driven to rotate by the servo motor (401), and the transmission bevel gear (402) is engaged with the second bevel gear (403), thereby driving the screw rod (405) to rotate. When the screw rod (405) rotates, it drives the mounting plate (102) to rise and fall, thereby completing the height adjustment of the clamping assembly (300), the alignment assembly (500), the transmission assembly (600), and the blocking cylinder (700); Step 4: Start the plugging cylinder (700), and use the plugging cylinder (700) to move the plug (701) toward the vertical valve port on the side of the valve. During the movement, the collar (601) and the fixing plate (602) on the output shaft of the plugging cylinder (700) move synchronously. The fixing plate (602) drives the telescopic rod (603) to rotate by rotating, thereby driving the telescopic rod (603) to rotate around the axis of the fixing rod (604). At this time, the end of the telescopic rod (603) connected to the connecting rod (302) will move in the opposite direction of the extension of the plugging cylinder (700), thereby driving the entire clamping assembly (300) to move in the opposite direction of the extension of the plugging cylinder (700). At the same time, the connecting rod (302) will synchronously drive The other end of the plate-like connecting rod (503) rotates and gradually changes the plate-like connecting rod (503) from its initial inclined state to a horizontal state, so that the distance between the alignment plate (502) and the connecting rod (302) will move toward the middle position of the linear slide rail (501) under the pressure of the plate-like connecting rod (503) that gradually becomes horizontal. The alignment plate (502) that simultaneously moves toward the middle of the linear slide rail (501) corrects the position of the valve port to ensure subsequent blocking. After the valve port is aligned with the plug (701), the support ring (301) at the rear position of the alignment assembly (500) will hold the valve placed on the placement seat (205) to ensure that the valve position will not be offset when the plug (701) is blocked.

Images