Detection device for valve machining and detection method thereof

Abstract

The invention belongs to the technical field of valve detection, and discloses a detection device for valve processing and a detection method thereof.The detection device comprises a base, a support is fixedly arranged at the top of the base, a photosensitive assembly is nested in the top surface of the base, and a motor is fixedly arranged at the top of the support. By adapting to the change of the internal size of the to-be-detected valve, when the internal diameter of the valve is changed, the position of the closely attached detection assembly is changed, so that the position of the corresponding laser emitting end is changed, the change of the laser irradiation position is sensed through the light sensing assembly, and the detection of the internal diameter size of the valve is realized; the size change of the pipe diameters at the two ends of the valve is judged by matching the sensing positions of the standard photosensitive area, the inner side photosensitive area and the outer side photosensitive area, the reduced and expanded areas can be accurately detected, the quality condition of the valve can be accurately identified and detected and quickly judged according to the increase or decrease of the local size of the inner wall of the valve, the detection is simple, and the detection efficiency is high. The use effect is good.

Description

Technical Field

[0001] The present invention belongs to the technical field of valve detection, and in particular relates to a detection device for valve processing and a detection method thereof. Background Art

[0002] During the valve processing, detection devices play a vital role. They can ensure that the sealing, strength and other key performance of the valve meet the standards, and determine the valve quality by testing various parameters of the valve structure.

[0003] In the prior art, the valve processing detection device usually uses optical equipment for size detection during the detection process in order to improve the detection efficiency and accuracy. The current detection scheme is specifically to use optical equipment to face the valve component below to perform optical detection on the target size. However, it is usually difficult to detect the uniformity of the inner diameter of the valve channel. On the one hand, it is difficult to detect the quality of the inner diameter of the valve port channel on both sides of the valve. On the other hand, when the inner diameter of the valve port channel on both sides of the valve is deformed or offset, it is also difficult to perform accurate detection, and the actual quality of the valve cannot be judged to a limited extent. The actual detection effect is limited and the use effect is poor. Summary of the invention

[0004] The object of the present invention is to provide a valve processing detection device and a detection method thereof to solve the problems raised in the above background technology.

[0005] In order to achieve the above-mentioned purpose, the present invention provides the following technical solutions: a detection device for valve processing and a detection method thereof, comprising a base, a bracket is fixedly provided on the top of the base, a photosensitive component is nested on the top surface of the base, a motor is fixedly provided on the top of the bracket, a support sleeve and an air pressure control component are fixedly provided on the bottom surface of the bracket, a lifting component is slidably provided in the support sleeve, the lifting component is rotatably sleeved with the bracket and fixedly connected to the output shaft of the motor, a connecting support arm is fixedly connected to the top of the lifting component, a detection component is fixed around the bottom of the outer surface of the connecting support arm, an air guide tube is fixedly provided on the bottom of the air pressure control component, and the air pressure control component controls the change of air pressure inside the detection component through the air guide tube and the connecting support arm; The detection assembly includes an extrusion cylinder, a connecting tube, a spring and a laser emitting end, wherein the laser emitting end is fixed to the bottom surface of the extrusion cylinder, one end of the connecting tube is fixed to the connecting support arm, and the other end is movably sleeved in the extrusion cylinder and fixedly connected to the spring; The photosensitive component includes a photosensitive body and a standard photosensitive area, an inner photosensitive area and an outer photosensitive area arranged on the top of the photosensitive component.

[0006] Preferably, a limit block is provided on the top of the base, the limit blocks are distributed in an arc shape with equal intervals, and the limit block is located on the outside of the photosensitive component.

[0007] Preferably, the inner photosensitive area is located inside the standard photosensitive area, and the outer photosensitive area is located outside the standard photosensitive area.

[0008] Preferably, the connecting support arm includes a supporting tube, an internal cavity and a movable duct, the top of the outer side surface of the supporting tube is fixedly connected to the movable duct, the top of the movable duct is movably sleeved in the air guide tube, the internal cavity is opened inside the supporting tube, the upper end of the internal cavity is connected to the movable duct, the outer side surface of the supporting tube is fixedly connected to the connecting tube, and the internal cavity is connected to the connecting tube.

[0009] Preferably, the lifting assembly includes a support frame, a lead screw and a clamping block. The support frame is slidably sleeved in the support sleeve, and the lower end is fixedly connected to the top of the support sleeve. The upper end of the lead screw is rotatably installed in the bracket and fixedly connected to the output shaft of the motor. The lead screw is threadedly sleeved inside the support frame, and the clamping block is fixedly connected to both sides of the support frame. A sliding groove is opened inside the support sleeve, and the clamping block is slidably sleeved in the sliding groove.

[0010] Preferably, the spring is fixed in an extrusion cylinder, and the outer end surface of the extrusion cylinder is arc-shaped.

[0011] Preferably, the air pressure control assembly includes a connecting frame, a pushing block, an electric push rod and a solenoid valve; the connecting frame is fixed on the bracket, the bottom of the connecting frame is fixedly connected to and connected with the air duct, the outer surface of the pushing block is provided with a sealing ring, and the pushing block is movably sleeved in the connecting frame, the solenoid valve is fixedly installed on the front side of the connecting frame, and controls the connection between the connecting frame and the ambient air, the movable end of the electric push rod is fixedly connected to the pushing block, and the electric push rod is fixed to the bracket through a fixing frame.

[0012] A detection method for a valve processing detection device includes the following detection steps: Step 1: Place the valve to be tested on the top of the base, with the valve port facing upwards, and push it between the limit blocks to complete the initial positioning; Step 2: Start the air pressure control component, the electric push rod drives the push block to move, and sucks the air inside the detection component through the air guide pipe and the connecting support arm. The air pressure inside the detection component decreases, and the negative pressure causes the extrusion cylinder to move and compress, and the length of the surrounding detection components is reduced; Step 3: Start the motor to drive the lifting assembly to move, so that the lifting assembly drives the connecting support arm to move downward, so that the detection assembly moves to the valve port of the valve to be tested, and then the electric push rod moves in the opposite direction and further compresses the internal air, so that the air pressure in the detection assembly increases, and the surrounding extrusion cylinders move synchronously and squeeze the inner wall of the valve port at the same time, automatically pushing the valve to the center for correction; Step 4: After positioning and correction, open the solenoid valve to connect the inside of the air pressure control component with the ambient air. The detection component restores the air pressure through the air guide tube. The spring elasticity pushes the extrusion cylinder to elastically squeeze the inner wall of the valve port to be tested, completing the detection preparation: Step 5: Start the photosensitive component and each group of laser emitting ends in the detection component, start the motor again, the lifting component drives the connecting support arm to move down, and pushes the surrounding detection components to slide along the inner wall of the valve port to be tested; Step 6: As the detection component moves downward along the inner wall, the laser emitting end irradiates the light vertically to the top surface of the photosensitive component. When only the standard photosensitive area senses the laser signal all the time, it is detected as a valve of qualified quality. When the inner photosensitive area senses three groups of laser signals at the same time, it is detected as a local inner diameter reduction. When the outer photosensitive area senses three groups of laser signals at the same time, it is detected as a local inner diameter expansion. When the inner and outer photosensitive areas sense laser signals at the same time, it is determined that the local center axis is offset.

[0013] The beneficial effects of the present invention are as follows: 1. The present invention utilizes a connecting support arm to carry a detection component that is distributed around, and when it moves along the inner wall of the valve port, it moves down by closely adhering to the inner wall and cooperates with the photosensitive component at the bottom to realize the sensing of the light emitted by the laser emitting end in the top detection component, so as to adapt to the change of the internal size of the valve to be tested. When the internal diameter of the valve changes, the position of the closely adhering detection component changes, thereby changing the position of the corresponding laser emitting end, so that the change of the laser irradiation position is sensed by the photosensitive component to realize the detection of the inner diameter of the valve, and the sensing position of the standard photosensitive area, the inner photosensitive area and the outer photosensitive area is cooperated to judge the size change of the pipe diameter at both ends of the valve, and can accurately detect the shrinking and expanding areas, and can accurately identify and detect the increase or decrease of the local size of the inner wall of the valve, so as to quickly judge the quality of the valve, and the detection is simple and the use effect is good. 2. The present invention uses the photosensitive component again, and cooperates with the sensing positions of the standard photosensitive area, the inner photosensitive area and the outer photosensitive area. When each group of photosensitive areas senses the laser beam at the same time, the axial deviation inside the valve at that position can be determined, and the detection and processing of the central axis inside the valve can be realized, thereby further expanding the detection range. Without adding new detection components, dual detection of the inner wall size and the central axis of the valve can be realized, and the actual detection effect is good.

[0014] 3. The present invention realizes negative pressure and boost processing in the detection component by reusing the control effect of the air pressure control component, reduces the length of the detection component under negative pressure, adapts to the inner diameter of the valve, and facilitates insertion, and cooperates with the boost processing to realize uniform expansion of the surrounding detection component inside the valve, thereby supporting and clamping the valve from the inside, realizing automatic correction of the valve, ensuring that the top center axis of the valve is consistent with the moving axis of the connecting support arm, and when the solenoid valve is bypassed and the internal air pressure is restored, the spring is used to elastically clamp the detection component to realize automatic positioning and correction before the detection is inserted, the actual positioning process is simple, which greatly improves the final detection accuracy, and the detection efficiency is high and the effect is good. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a structural schematic diagram of the present invention; Figure 2 It is a schematic diagram of the installation of the air pressure control assembly and the bracket of the present invention; Figure 3 It is a schematic diagram of connecting the support arm and the lifting assembly of the present invention; Figure 4 It is a cross-sectional schematic diagram of the connecting support arm of the present invention; Figure 5 is a cross-sectional schematic diagram of the detection assembly of the present invention; Figure 6 is a schematic diagram of a lifting assembly of the present invention; Figure 7 It is an exploded schematic diagram of the air pressure control assembly of the present invention; Figure 8 is a cross-sectional schematic diagram of the support sleeve of the present invention; Fig. 9 Schematic diagram of the photosensitive component of the present invention.

[0016] In the figure: 1. base; 2. limit block; 3. bracket; 4. motor; 5. photosensitive component; 51. photosensitive body; 52. standard photosensitive area; 53. inner photosensitive area; 54. outer photosensitive area; 6. support sleeve; 7. connecting support arm; 71. support cylinder; 72. internal cavity; 73. movable guide tube; 8. lifting component; 81. support frame; 82. lead screw; 83. block; 9. detection component; 91. extrusion cylinder; 92. connecting pipe; 93. spring; 94. laser emitting end; 10. air pressure control component; 101. connecting frame; 102. push block; 103. electric push rod; 104. solenoid valve; 11. air guide tube. DETAILED DESCRIPTION

[0017] 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.

[0018] like Figures 1 to 9 As shown, the embodiment of the present invention provides a valve processing detection device and a detection method thereof, including a base 1, a bracket 3 is fixedly provided on the top of the base 1, a photosensitive component 5 is nested on the top surface of the base 1, a motor 4 is fixedly provided on the top of the bracket 3, a support sleeve 6 and an air pressure control component 10 are respectively fixedly provided on the bottom surface of the bracket 3, a lifting component 8 is slidably provided in the support sleeve 6, the lifting component 8 is rotatably sleeved with the bracket 3 and is fixedly connected to the output shaft of the motor 4, a connecting support arm 7 is fixedly connected to the top of the lifting component 8, a detection component 9 is fixedly fixed around the bottom of the outer surface of the connecting support arm 7, an air guide pipe 11 is fixedly provided at the bottom of the air pressure control component 10, and the air pressure control component 10 is connected to the air guide pipe 11 through the air guide pipe The tube 11 and the connecting support arm 7 control the change of the internal air pressure of the detection component 9. The detection component 9 includes an extrusion cylinder 91, a connecting tube 92, a spring 93 and a laser emitting end 94. The laser emitting end 94 is fixed on the bottom surface of the extrusion cylinder 91. One end of the connecting tube 92 is fixed on the connecting support arm 7, and the other end is movably sleeved in the extrusion cylinder 91 and fixedly connected to the spring 93. The photosensitive component 5 includes a photosensitive body 51 and a standard photosensitive area 52, an inner photosensitive area 53 and an outer photosensitive area 54 arranged on the top of the photosensitive component 5. The standard photosensitive area 52, the inner photosensitive area 53 and the outer photosensitive area 54 are all existing photoelectric detectors, and the specific model is S8664-1010.

[0019] Embodiment 1: Place the valve to be tested on the top of the base 1, and make the valve port to be tested face upward, and push it between the limit blocks 2 to complete the preliminary positioning, start the air pressure control component 10, and the electric push rod 103 drives the push block 102 to move, expand the internal volume space of the connecting frame 101, and suck the air in the internal cavity 72 through the air guide tube 11 and the movable conduit 73, and suck the air inside the detection component 9 through the connecting support arm 7, and directly suck the air inside the extrusion cylinder 91 through the connecting tube 92. The air pressure inside the detection component 9 is reduced, and the negative pressure makes the extrusion cylinder 91 displaced and compressed, and compresses the spring 93, so that the length of the surrounding detection component 9 is reduced, and the motor 4 is started to drive the lifting component 8 The lead screw 82 rotates, and the block 83 is connected with the slide groove in the support sleeve 6, so that the support frame 81 moves downward, so that the lifting component 8 drives the connecting support arm 7 to move downward, so that the extrusion cylinder 91 in the detection component 9 moves to the valve port of the valve to be tested, and then the electric push rod 103 reverses and further compresses the air inside the connecting frame 101, so that the pressure in the detection component 9 increases, and the surrounding extrusion cylinders 91 act synchronously and squeeze the inner wall of the valve port at the same time, automatically pushing the valve to the center for correction. After positioning and correction, the solenoid valve 104 is opened, so that the inside of the air pressure control component 10 is connected with the ambient air, and the detection component 9 restores the air pressure through the air guide pipe 11. The spring 93 elastically pushes the extrusion cylinder 91 to The cylinder 91 elastically squeezes the inner wall of the valve port to be tested, completes the test preparation, starts the photosensitive component 5, and starts each group of laser emitting ends 94 (model Q2XAPLPF-2M, specifically the existing micro laser emitter) in the detection component 9, and starts the motor 4 again. The lifting component 8 drives the connecting support arm 7 to move downward, and pushes the surrounding detection components 9 to slide along the inner wall of the valve port to be tested; when the extrusion cylinder 91 slides along the inside to the expansion position, the spring 93 further pushes the extrusion cylinder 91 and the bottom laser emitting end 94 to move outward, and the laser emitting end 94 irradiates the light vertically to the top surface of the photosensitive component 5, and when sliding to the area where the inner diameter of the valve port is reduced, the spring 93 is further compressed, driving the extrusion cylinder 91 to move outward. The tube 91 shrinks, and multiple groups of extrusion tubes 91 drive the bottom laser emitting end 94 to move closer. When sliding to the valve center offset, part of the extrusion tube 91 moves outward, and part of the extrusion tube 91 moves inward, so that the three groups of laser emitting ends 94 are adaptively offset, and the light emitted by the laser emitting end 94 moves. When only the standard photosensitive area 52 always senses the laser signal, it is detected as a qualified valve. When the inner photosensitive area 53 senses three groups of laser signals at the same time, it is detected as a local inner diameter reduction. When the outer photosensitive area 54 senses three groups of laser signals at the same time, it is detected as a local inner diameter expansion. When the inner photosensitive area 53 and the outer photosensitive area 54 sense laser signals at the same time, it is judged that the local center axis is offset.

[0020] Firstly, by using the connecting support arm 7 to carry the surrounding detection components 9, and when moving along the inner wall of the valve mouth, by moving down close to the inner wall and cooperating with the photosensitive component 5 at the bottom, the sensing of the light emitted by the laser emitting end in the top detection component 9 is realized, so as to adapt to the change of the internal size of the valve to be tested. When the internal diameter of the valve changes, the position of the closely attached detection component 9 changes, thereby changing the position of the corresponding laser emitting end 94, so that the change of the laser irradiation position is sensed by the photosensitive component 5, so as to realize the detection of the inner diameter of the valve, and cooperate with the sensing position of the standard photosensitive area 52, the inner photosensitive area 53 and the outer photosensitive area 54 to judge the size change of the pipe diameter at both ends of the valve, and can accurately detect the shrinking and expanding areas, and can accurately identify and detect the increase or decrease of the local size of the inner wall of the valve, so as to quickly judge the quality of the valve, and the detection is simple and the use effect is good. In addition, by using the photosensitive component 5 again, and coordinating the sensing positions of the standard photosensitive area 52, the inner photosensitive area 53 and the outer photosensitive area 54, when each group of photosensitive areas senses the laser beam at the same time, the axial offset inside the valve at that position can be determined, and the detection and processing of the central axis inside the valve can be realized, thereby further expanding the detection range. Without adding new detection components, dual detection of the valve inner wall size and the central axis can be realized, and the actual detection effect is good.

[0021] On the other hand, by reusing the control effect of the air pressure control component 10, negative pressure and boost processing are achieved in the detection component 9. Under negative pressure, the length of the detection component 9 is reduced to adapt to the inner diameter of the valve and facilitate insertion. In combination with the boost processing, the surrounding detection component 9 can be uniformly expanded inside the valve, thereby supporting and clamping the valve from the inside to achieve automatic correction of the valve, ensuring that the top center axis of the valve is consistent with the moving axis of the connecting support arm 7. When the solenoid valve 104 is bypassed and the internal air pressure is restored, the spring 93 is used to elastically clamp the detection component 9 to achieve automatic positioning and correction before the detection is inserted. The actual positioning process is simple, which greatly improves the final detection accuracy, and the detection efficiency is high and the effect is good.

[0022] Embodiment 2: A laser length measurer (not shown in the figure) is fixedly provided at the bottom of the extrusion cylinder 91 in the detection component 9, and the air pressure control component 10 is cooperated to input pressure into the detection component 9 to control the movement of the extrusion cylinder 91 and move the laser length measurer along the top of the valve to optically measure the external dimensions of the bottom valve (the model of the laser length measurer is the SJ51 series laser length measurer, which is an existing mechanism).

[0023] First, by reusing the displacement control of the extrusion cylinder 91 in the detection component 9, after the additional laser length measuring device is installed and fixed, the external dimensions of the placed valve are laser measured using mobile control to achieve auxiliary detection of the external dimensions and expand the detection range.

[0024] Example 3: The standard photosensitive area 52, the inner photosensitive area 53 and the outer photosensitive area 54 in the photosensitive component 5 can be replaced with fluorescent materials, and films of different colors are attached to the top of each group of fluorescent materials. The laser irradiation is received by fluorescent areas of different colors, and the detection results are judged by lighting up different colors.

[0025] A limit block 2 is provided on the top of the base 1 . The limit blocks 2 are distributed in an arc shape with equal intervals. The limit blocks 2 are located on the outside of the photosensitive component 5 .

[0026] By using three groups of limit blocks 2 to achieve preliminary positioning, it is ensured that rough positioning is achieved before the valve positioning detection, thereby improving the accuracy and convenience of subsequent positioning processing.

[0027] The inner photosensitive area 53 is located inside the standard photosensitive area 52 , and the outer photosensitive area 54 is located outside the standard photosensitive area 52 .

[0028] By utilizing the division of the positions of non-photosensitive areas, the movement of the laser emitting end 94 in the valve is adapted to achieve differential detection under different displacements.

[0029] Among them, the connecting support arm 7 includes a supporting tube 71, an internal cavity 72 and a movable duct 73. The top of the outer side surface of the supporting tube 71 is fixedly connected to the movable duct 73, the top of the movable duct 73 is movably sleeved in the air guide tube 11, the internal cavity 72 is opened inside the supporting tube 71, the upper end of the internal cavity 72 is connected to the movable duct 73, the outer side surface of the supporting tube 71 is fixedly connected to the connecting tube 92, and the internal cavity 72 is connected to the connecting tube 92.

[0030] By utilizing the connecting support arm 7, on the one hand, the connection and fixation of the detection component 9 is achieved, and on the other hand, airway conduction is provided, so that the air pressure in the detection component 9 can be sucked out, or the gas in the detection component 9 can be compressed, thereby facilitating the pressure control in the detection component 9.

[0031] Among them, the lifting assembly 8 includes a support frame 81, a screw 82 and a clamping block 83. The support frame 81 is slidably sleeved in the support sleeve 6, and the lower end is fixedly connected to the top of the support tube 71. The upper end of the screw 82 is rotatably installed in the bracket 3 and is fixedly connected to the output shaft of the motor 4. The screw 82 is threadedly sleeved inside the support frame 81, and the clamping block 83 is fixedly connected to both sides of the support frame 81. A sliding groove is opened inside the support sleeve 6, and the clamping block 83 is slidably sleeved in the sliding groove.

[0032] By utilizing the lifting assembly 8 to control the up and down displacement of the connecting support arm 7, the up and down displacement of the detection assembly 9 is controlled, thereby pushing the inner wall of the valve port downward to complete the outer surface inner diameter detection and deviation detection.

[0033] The spring 93 is fixed in the extrusion cylinder 91, and the outer end surface of the extrusion cylinder 91 is arc-shaped.

[0034] The arc-shaped outer end of the extrusion cylinder 91 is utilized to provide a contact effect with the arc surface of the inner wall of the valve port, thereby providing a contact area and maintaining contact stability.

[0035] Among them, the air pressure control component 10 includes a connecting frame 101, a pushing block 102, an electric push rod 103 and a solenoid valve 104. The connecting frame 101 is fixed on the bracket 3. The bottom of the connecting frame 101 is fixedly connected and connected to the air guide tube 11. The outer surface of the pushing block 102 is provided with a sealing ring, and is movably sleeved in the connecting frame 101. The solenoid valve 104 is fixedly installed on the front side of the connecting frame 101 and controls the connection between the connecting frame 101 and the ambient air. The movable end of the electric push rod 103 is fixedly connected to the pushing block 102, and the electric push rod 103 is fixed to the bracket 3 through a fixing frame.

[0036] By utilizing the lateral movement of the push block 102 in the air pressure control component 10, the space on the left side of the connecting frame 101 is compressed or expanded, thereby realizing air pressure control in the detection component 9. When the air pressure is reduced, the length of the detection component 9 is contracted, making it easier to insert it into the valve. When squeezed, the internal air pressure is enhanced, forcing it to extend in the valve and push the valve to actively correct. When the solenoid valve 104 is opened, the air pressure is restored, so that the detection component 9 is elastically clamped inside the valve through elastic action, and the sealing ring maintains a dynamic seal.

[0037] A detection method for a valve processing detection device includes the following detection steps: Step 1: Place the valve to be tested on the top of the base 1, with the valve port facing upward, and push it between the limit blocks 2 to complete the initial positioning; Step 2: Start the air pressure control component 10, the electric push rod 103 drives the push block 102 to move, and sucks the air inside the detection component 9 through the air guide tube 11 and the connecting support arm 7, the air pressure inside the detection component 9 is reduced, and the negative pressure causes the extrusion cylinder 91 to move and compress, and the length of the surrounding detection components 9 is reduced; Step 3: Start the motor 4 to drive the lifting assembly 8 to move, so that the lifting assembly 8 drives the connecting support arm 7 to move downward, so that the detection assembly 9 moves to the valve port of the valve to be tested, and then the electric push rod 103 moves in the opposite direction and further compresses the internal air, so that the air pressure in the detection assembly 9 increases, and the surrounding extrusion cylinders 91 move synchronously and squeeze the inner wall of the valve port at the same time, automatically pushing the valve to the center for correction; Step 4: After positioning and correction, open the solenoid valve 104, so that the inside of the air pressure control component 10 is connected to the ambient air, the detection component 9 restores the air pressure through the air guide tube 11, and the spring 93 elastically pushes the extrusion cylinder 91 to elastically squeeze the inner wall of the valve port to be tested, completing the detection preparation: Step 5: Start the photosensitive component 5, and start each group of laser emitting ends 94 in the detection component 9, start the motor 4 again, the lifting component 8 drives the connecting support arm 7 to move downward, and pushes the surrounding detection components 9 to slide along the inner wall of the valve port to be tested; Step 6: As the detection component 9 moves downward along the inner wall, the laser emitting end 94 irradiates light vertically to the top surface of the photosensitive component 5. When only the standard photosensitive area 52 senses the laser signal all the time, it is detected as a valve of qualified quality. When the inner photosensitive area 53 senses three groups of laser signals at the same time, it is detected as a local inner diameter reduction. When the outer photosensitive area 54 senses three groups of laser signals at the same time, it is detected as a local inner diameter expansion. When the inner photosensitive area 53 and the outer photosensitive area 54 sense laser signals at the same time, it is determined that the local center axis is offset.

[0038] Although embodiments of the present invention have been shown and described, 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 that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A valve processing detection device, comprising a base (1), characterized in that: A bracket (3) is fixedly provided on the top of the base (1), a photosensitive component (5) is embedded in the top surface of the base (1), a motor (4) is fixedly provided on the top of the bracket (3), a support sleeve (6) and an air pressure control component (10) are respectively fixedly provided on the bottom surface of the bracket (3), a lifting component (8) is slidably provided in the support sleeve (6), the lifting component (8) is rotatably sleeved with the bracket (3) and fixedly connected to the output shaft of the motor (4), a connecting support arm (7) is fixedly connected to the top of the lifting component (8), a detection component (9) is fixedly provided around the bottom of the outer surface of the connecting support arm (7), an air guide tube (11) is fixedly provided on the bottom of the air pressure control component (10), and the air pressure control component (10) controls the change of air pressure inside the detection component (9) through the air guide tube (11) and the connecting support arm (7); The detection assembly (9) comprises an extrusion cylinder (91), a connecting tube (92), a spring (93) and a laser emitting end (94); the laser emitting end (94) is fixed to the bottom surface of the extrusion cylinder (91); one end of the connecting tube (92) is fixed to the connecting support arm (7), and the other end is movably sleeved in the extrusion cylinder (91) and fixedly connected to the spring (93); The photosensitive component (5) comprises a photosensitive body (51), and a standard photosensitive area (52), an inner photosensitive area (53), and an outer photosensitive area (54) arranged on the top of the photosensitive component (5).

2. A valve processing detection device according to claim 1, characterized in that: A limit block (2) is provided on the top of the base (1); the limit blocks (2) are distributed in an arc shape at equal intervals; and the limit blocks (2) are located outside the photosensitive component (5).

3. A valve processing detection device according to claim 2, characterized in that: The inner photosensitive area (53) is located inside the standard photosensitive area (52), and the outer photosensitive area (54) is located outside the standard photosensitive area (52).

4. A valve processing detection device according to claim 3, characterized in that: The communicating support arm (7) comprises a supporting tube (71), an internal cavity (72) and a movable conduit (73); the top of the outer side surface of the supporting tube (71) is fixedly connected to the movable conduit (73); the top of the movable conduit (73) is movably sleeved in the air guide tube (11); the internal cavity (72) is opened inside the supporting tube (71); the upper end of the internal cavity (72) is communicated with the movable conduit (73); the outer side surface of the supporting tube (71) is fixedly connected to the communicating tube (92), and the internal cavity (72) is communicated with the communicating tube (92).

5. A valve processing detection device according to claim 4, characterized in that: The lifting assembly (8) comprises a support frame (81), a lead screw (82) and a clamping block (83); the support frame (81) is slidably sleeved in the support sleeve (6), and the lower end is fixedly connected to the top of the support tube (71); the upper end of the lead screw (82) is rotatably mounted in the bracket (3) and is fixedly connected to the output shaft of the motor (4); the lead screw (82) is threadedly sleeved inside the support frame (81); the clamping block (83) is fixedly connected to two sides of the support frame (81); a slide groove is provided inside the support sleeve (6), and the clamping block (83) is slidably sleeved in the slide groove.

6. A valve processing detection device according to claim 5, characterized in that: The spring (93) is fixed in the extrusion cylinder (91), and the outer end surface of the extrusion cylinder (91) is arc-shaped.

7. A valve processing detection device according to claim 6, characterized in that: The air pressure control assembly (10) comprises a connecting frame (101), a pushing block (102), an electric push rod (103) and a solenoid valve (104). The connecting frame (101) is fixed on the bracket (3). The bottom of the connecting frame (101) is fixedly connected to and connected with the air guide tube (11). The outer surface of the pushing block (102) is provided with a sealing ring and is movably sleeved in the connecting frame (101). The solenoid valve (104) is fixedly installed on the front side of the connecting frame (101) and controls the connection between the connecting frame (101) and the ambient air. The movable end of the electric push rod (103) is fixedly connected to the pushing block (102). The electric push rod (103) is fixed to the bracket (3) via a fixing frame.

8. The detection method of the valve processing detection device according to claim 7, characterized in that: The following detection steps are included: Step 1: Place the valve to be tested on the top of the base (1) with the valve port facing upwards and push it between the limit blocks (2) to complete the initial positioning; Step 2: The air pressure control component (10) is started, and the electric push rod (103) drives the push block (102) to move, and the air inside the detection component (9) is sucked through the air guide tube (11) and the connecting support arm (7), so that the air pressure inside the detection component (9) is reduced, and the negative pressure causes the extrusion cylinder (91) to move and compress, and the length of the detection component (9) distributed around it is reduced; Step 3: Start the motor (4) to drive the lifting assembly (8) to move, so that the lifting assembly (8) drives the connecting support arm (7) to move downward, so that the detection assembly (9) moves to the valve port of the valve to be tested, and then the electric push rod (103) moves in the opposite direction and further compresses the internal air, so that the air pressure in the detection assembly (9) increases, and the surrounding extrusion cylinders (91) move synchronously and squeeze the inner wall of the valve port at the same time, so as to automatically push the valve to the center for correction; Step 4: After positioning and calibration, the solenoid valve (104) is opened to allow the interior of the air pressure control component (10) to communicate with the ambient air. The detection component (9) restores the air pressure through the air guide tube (11). The spring (93) elastically pushes the extrusion cylinder (91) to elastically squeeze the inner wall of the valve port to be tested, and the detection preparation is completed: Step 5: Start the photosensitive component (5), and start each group of laser emitting ends (94) in the detection component (9), start the motor (4) again, and the lifting component (8) drives the connecting support arm (7) to move downward, and pushes the surrounding detection components (9) to slide along the inner wall of the valve port to be tested; Step 6: As the detection component (9) moves downward along the inner wall, the laser emitting end (94) irradiates light vertically onto the top surface of the photosensitive component (5). When only the standard photosensitive area (52) senses the laser signal all the time, it is detected as a valve of qualified quality. When the inner photosensitive area (53) senses three groups of laser signals at the same time, it is detected as a local inner diameter reduction. When the outer photosensitive area (54) senses three groups of laser signals at the same time, it is detected as a local inner diameter expansion. When the inner photosensitive area (53) and the outer photosensitive area (54) sense laser signals at the same time, it is determined that the local central axis is offset.

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