A manufacturing method and system of a butterfly valve and the butterfly valve

Abstract

The present invention relates to a butterfly valve manufacturing method, system, and butterfly valve thereof, and relates to the field of valves. The method includes detecting the weight detection value of the sealing ring. If it does not match the reference weight value, blowing air and obtaining resistance information; if the resistance information is abnormal, marking the position as an abnormal position and obtaining surface image information; determining the feature type based on the surface image information and the abnormal feature, including multi-material feature and low-material feature; based on the multi-material feature, determining the multi-material feature position based on the surface image information, the multi-material feature, and the reference position, and determining the multi-material feature type based on the multi-material feature position, the multi-material feature type including edge burrs and surface protrusions; based on the edge burrs, controlling a trimming device to perform trimming; based on the surface protrusions, repairing the seal using a protrusion repair method; based on the low-material feature, determining the low-material feature position based on the surface image information, the low-material feature, and the reference position, and repairing the seal using a low-material repair method. The present invention has the effect of improving the sealing of the butterfly valve.

Description

Technical Field

[0001] The present invention relates to the field of valves, and in particular to a butterfly valve manufacturing method, system and butterfly valve. Background Art

[0002] Butterfly valve, also known as flap valve, is a simple regulating valve that is widely used in low-pressure pipelines to control the flow of media.

[0003] A butterfly valve primarily consists of a valve body and a disc that rotates within the valve body for opening and closing. The disc has a sealing ring around its circumference. The sealing performance of a butterfly valve is primarily determined by the quality of the valve body and the sealing ring. When a butterfly valve is used in a pipeline, the valve body and sealing ring must be inspected during the valve manufacturing process to ensure a leak-proof seal.

[0004] The traditional manufacturing method of butterfly valves mainly relies on manual inspection and judgment of materials and sealing rings. This is not only inefficient and has limited accuracy, but may also lead to errors, resulting in quality problems when the butterfly valve leaves the factory and resulting in low sealing effect. Summary of the Invention

[0005] In order to improve the sealing effect of a butterfly valve, the present invention provides a butterfly valve manufacturing method, a system and a butterfly valve.

[0006] In a first aspect, the present invention provides a method for manufacturing a butterfly valve, which adopts the following technical solution:

[0007] A method for manufacturing a butterfly valve, comprising:

[0008] Get the weight test value of the sealing ring;

[0009] When the weight detection value is inconsistent with the preset reference weight value, the preset blowing device is controlled to blow air around the sealing ring with a preset blowing force and obtain resistance detection information;

[0010] When the resistance detection information is inconsistent with the preset resistance reference information, the position where the blowing device is currently blowing is marked and defined as an abnormal position, and the surface image detection information of the sealing ring is obtained at the abnormal position;

[0011] Determine the abnormal feature type according to the surface image detection information and the preset abnormal features, the abnormal feature type including the excessive material feature and the insufficient material feature;

[0012] Based on the multi-material features, the multi-material feature positions are determined according to the surface image detection information, the multi-material features and the preset reference positions, and the multi-material feature types are determined according to the multi-material feature positions, where the multi-material feature types include edge burrs and surface protrusions;

[0013] Based on the edge burrs, a preset trimming device is controlled to trim the edge burrs along the edge of the sealing ring;

[0014] Based on the surface protrusions, the surface protrusions are repaired at the multi-material feature positions using a preset protrusion repair method;

[0015] Based on the low-material feature, the low-material feature position is determined according to the surface image detection information, the low-material feature and the reference position, and the low-material feature is repaired at the low-material feature position using a preset low-material repair method.

[0016] By employing this technical solution, the weight and resistance test values of the sealing ring are compared with the reference data to determine the abnormal location, thereby identifying abnormal features such as over-material and under-material features. Surface image detection information is obtained at the abnormal location to determine the type of abnormal feature. This allows for classification and treatment of the abnormal features based on the specific situation, thereby improving the sealing performance and overall quality of the butterfly valve.

[0017] Optionally, a bulge repair method for repairing surface bulges includes:

[0018] determining a convex contour and a convex surface area based on surface image detection information and surface convexities;

[0019] Determine the area enclosed by the contour based on the raised contour;

[0020] The difference between the raised surface area and the area enclosed by the contour was calculated and defined as the corrected area;

[0021] Match the resection area of the material to be resected according to the correction area;

[0022] Match the number of cutting positions of the material to be cut according to the area of the raised contour, and determine the cutting point position according to the number of cutting positions and the raised contour;

[0023] Determine the single resection area of each resection point according to the resection area and the number of resection positions;

[0024] Controlling a preset excision device to heat to a preset melting temperature, controlling the excision device to move to each excision point position to excise the surface protrusion with a preset excision shape and single excision area, and obtaining excision image information of the excision point position;

[0025] Based on the inconsistency between the resection image information and the preset reference section image, it is defined as a perforation, and the resection device is controlled to directly remove the surface protrusion, and the multi-material feature position after the resection is repaired using a preset perforation repair method;

[0026] Based on the consistency between the resection image information and the reference section image, after the resection is completed, the preset pressing device is controlled to flatten the multi-material feature position within the preset cooling time.

[0027] By employing this technical solution, during the excision process, perforation is determined based on the excision image information, and appropriate repair measures are taken, ensuring the accuracy of excision and repair. The heating device melts and removes surface protrusions, facilitating a smoother flattening process. The pressing device then controls the excision area to flatten within the cooling period, completing the repair and improving the surface quality of the sealing ring.

[0028] Optional, low-material repair methods include:

[0029] Determine the wear depth value of the feature position with less material based on the surface image detection information;

[0030] If the wear depth is greater than the preset reference material thickness, it is defined as a perforation, and the pre-set perforation repair method is used to repair the feature position with less material.

[0031] Based on the wear depth value not being greater than the reference material thickness, it is defined as surface wear, and the volume of the missing material is determined based on the weight test value and the reference weight value;

[0032] The volume of the repair material used for repairing after the multi-material characteristics are matched according to the volume of the small material;

[0033] Determine the area and outline of the missing material based on the surface image detection information and the missing material characteristics;

[0034] The marking position and number of markings are matched with the feature position of the less-material area;

[0035] The cutting device is controlled to cut the surface of the feature position with less material by using the marking position, the number of markings and the preset inclined cutting angle to produce the seepage seam;

[0036] The preset heating device is controlled to melt the crushed multi-material feature for repair at a preset heating temperature, and the repair device is controlled to inject the molten repair material into the small-material feature position along a preset spiral path to complete the repair.

[0037] By employing this technical solution, the wear depth at the low-reinforced feature is analyzed, and different repair strategies are implemented based on the degree of wear. For perforations, a perforation repair method is used. For surface wear, the volume of the repair material is matched to the volume of the low-reinforced feature. Crushing the high-reinforced feature for repair saves material, and creating seepage cracks by scoring allows the melted repair material to flow into the cracks, allowing it to better penetrate and adhere to the sealing ring material. This effectively restores the sealing performance of the low-reinforced feature. Injecting the low-reinforced feature in a spiral path ensures even distribution of the repair material.

[0038] Optionally, both the perforations at the multi-material feature location and the perforations at the small-material feature location may be repaired using a perforation repair method, which includes:

[0039] Determine the perforation profile based on surface image detection information and preset perforation features;

[0040] matching a preset material specification of a patch material for inserting into the perforation feature according to the perforation profile;

[0041] Determine the pressing distance of the pressing device according to the preset sealing ring inner cavity height;

[0042] Determining the volume of repair material inserted into the perforated feature based on the perforation profile and the pressing distance;

[0043] Determine the pressing force according to the preset strength and volume of the repair material;

[0044] Determining a circumferential range of a repair material inserted into a perforated feature that needs to be heated based on a pressing distance and a preset reserved distance;

[0045] Controlling a preset heating device to heat a circumferential range of the repair material at a preset semi-melting temperature and to circumferentially heat an edge position of the perforation profile at a preset preheating temperature;

[0046] Controlling the insertion of the repair material into the perforation feature by a pressing distance and controlling the pressing device to press the repair material with a pressing force so as to flatten the repair material in the inner cavity of the sealing ring and adhere it to the inner surface of the perforation feature;

[0047] The heating device is controlled to heat the repair material and the perforation feature along the perforation contour at a preset baking temperature to achieve connection. After the heating is completed, the preset cutting device is controlled to cut off the repair material exposed outside the perforation feature.

[0048] By adopting the above technical solution, matching the patch material specifications and determining the patch material volume, combined with pressure and heating, efficient repair of perforated features can be achieved. Matching the material specifications allows the patch material to block the perforated feature, while heating the circumferential heating area can keep the patch material in a semi-molten state, allowing it to better adhere to the inner surface of the perforated feature after it has also been heated. Flattening the patch material in the sealing ring cavity and adhering it to the inner surface can achieve a better and more secure patch, while the patch material outside the perforated feature is removed.

[0049] Optionally, the material shortage feature also includes a surface crack feature, and the surface crack feature repair method includes:

[0050] Determine the lighting position according to the feature position of the small amount of material;

[0051] Controlling a preset illumination device to illuminate the illumination position with a preset reference illumination intensity, and obtaining the reflected illumination intensity of the reflected light at a preset receiving position;

[0052] Determine the light intensity change according to the reference light intensity and the reflected light intensity;

[0053] Match the crack depth according to the change in light intensity;

[0054] Determine the surface crack area based on surface image detection information and the position of the missing material feature;

[0055] Match the repair volume according to the crack depth and surface crack area;

[0056] The repair device is controlled to repair the surface crack features with a repair volume.

[0057] By employing this technical solution, the depth and area of cracks on the sealing ring surface are determined using illumination and reflected light intensity detection. The crack depth can be determined based on changes in light intensity, and the repair volume can be matched accordingly, achieving precise repair of surface crack characteristics. By illuminating the crack location with an illumination device, changes in reflected light intensity are detected. Combined with surface image detection information, the crack depth and area are determined, allowing for precise control of the amount of repair material injected, effectively restoring the surface quality of the sealing ring.

[0058] Optionally, when there are wrinkles on the surface of the sealing ring and the surface crack feature is located on the wrinkle, the method for repairing the crack feature on the wrinkle includes:

[0059] Determining the distance for spreading the folds according to the preset fold characteristics;

[0060] Controlling a preset spreading device to spread the wrinkle feature at a spreading distance and controlling an illumination device to illuminate the surface crack feature on the wrinkle feature at a reference illumination intensity to obtain a light intensity variation and an illumination shadow angle;

[0061] Match the wrinkle crack depth according to the change in light intensity;

[0062] Match the bottom depth of the surface crack feature that is not illuminated by the illumination device according to the illumination shadow angle;

[0063] Determine the corrected crack depth based on the fold crack depth and bottom depth;

[0064] Match the corrected repair volume based on the corrected crack depth and surface crack area;

[0065] The repair device is controlled to repair the surface crack features on the wrinkles by correcting the repair volume.

[0066] By employing the above technical solution, the surface crack features on the folds are targeted by controlling the prying device to pry the fold features so that the illumination device can illuminate the surface crack features, thereby determining the crack depth and bottom depth. By calculating and matching the corrected crack depth, a corrected repair volume is obtained, achieving precise repair of the fold cracks. This method uses the prying device to pry the fold features for repair, ensuring that the repair material can fully fill the cracks, thereby improving the repair effect.

[0067] Optionally, when the wrinkle feature and the surface crack feature are located at the bottom of the sealing ring and cannot be directly illuminated by the illumination device, the method for repairing the surface crack feature at the bottom of the sealing ring includes:

[0068] Determine the wrinkle position based on surface image detection information and preset wrinkle features;

[0069] Determining the installation position of the preset reflector according to the fold position and the preset reflection distance;

[0070] Controlling the peeling device to peel the wrinkle feature apart at a peeling distance, controlling the illumination device to generate a light source at a reference light intensity, and controlling the reflector to be set at an installation position to reflect the light source of the illumination device onto the surface crack feature, thereby obtaining a light intensity change;

[0071] controlling the reflector to rotate so as to completely illuminate the light into the bottom of the surface crack, and obtaining the rotation angle of the reflector;

[0072] Determine the crack shadow depth based on the reflection distance and rotation angle;

[0073] Match the wrinkle crack depth according to the change in light intensity;

[0074] Determine the corrected crack depth based on the fold crack depth and crack shadow depth;

[0075] Match the corrected repair volume based on the corrected crack depth and surface crack area;

[0076] The repair device is controlled to repair the surface crack features on the wrinkles by correcting the repair volume.

[0077] By adopting the above technical solution, using a combination of a reflector and an illumination device, the reflector is rotated to reflect the light from the illumination device completely through the reflector to the bottom of the crack, thereby determining the crack shadow depth. The system then calculates and corrects the crack depth based on the change in light intensity, thereby matching the corrected repair volume and achieving the repair of wrinkle cracks. This method improves the accuracy of crack depth detection, ensures that the repair material can completely fill the crack, and ensures the sealing effect of the sealing ring.

[0078] Optionally, the sealing ring and the valve disc are assembled. When the valve disc is over-materialized, the friction between the two causes wear of the sealing ring. The treatment methods for the over-materialized valve disc include:

[0079] Obtaining valve disc image information;

[0080] Determine the scraping position, scraping volume and scraping profile based on the disc image information and the preset metal multi-material features;

[0081] Determine the maximum width of the profile based on the scraping profile;

[0082] Match the preset width specification of the scraper device according to the maximum width of the profile;

[0083] Match the scraping force of the scraper device according to the scraping volume and the preset metal material;

[0084] A scraper device is selected according to the width specification, and the scraper device is controlled to move to the scraping position. The metal multi-material features at the scraping position are scraped with a scraping force, and whether there are metal multi-material features at the scraping position is re-identified according to the valve disc image information until the metal multi-material features are scraped off.

[0085] By employing the above technical solution, the valve disc image information is analyzed to determine the scraping location, volume, and contour of the metal multi-material feature. The corresponding scraper device specifications and scraping force are then matched to achieve precise scraping of the metal multi-material feature, ensuring the smoothness and quality of the valve disc surface. This method uses a scraper device to scrape the metal multi-material feature layer by layer, and uses image recognition technology to monitor the scraping effect in real time until the metal multi-material feature is completely removed, effectively improving the valve disc's smoothness and sealing performance.

[0086] In a second aspect, the present application provides a butterfly valve manufacturing system, which adopts the following technical solutions:

[0087] A butterfly valve manufacturing system, comprising:

[0088] An acquisition module is used to obtain the weight detection value of the sealing ring, resistance detection information, surface image detection information of the sealing ring, excision image information of the excision point position, wear depth value of the feature position of the small material, reflected light intensity of the reflected light, light intensity change, light shadow angle, rotation angle of the reflector, and valve disc image information;

[0089] A memory for storing a program of any one of the above-mentioned methods for manufacturing a butterfly valve;

[0090] The program in the memory can be loaded and executed by the processor to implement a butterfly valve manufacturing method.

[0091] In a third aspect, the present application provides a butterfly valve, which adopts the following technical solution:

[0092] A butterfly valve comprises a valve body and a valve disc rotatably mounted in the valve body for opening and closing. The valve disc is circumferentially provided with a sealing ring for abutting against the inner wall of the valve body to form a seal.

[0093] In summary, this application includes at least one of the following beneficial technical effects:

[0094] By adopting the above technical solution, the wear depth value of the feature position with less material is analyzed, and different repair strategies are adopted according to the degree of wear. For perforation, the perforation repair method is adopted. For surface wear, the volume of the repair material is matched with the volume of the less material. The multi-material feature is crushed and used for repair to save material. The repair material is melted and flows into the seepage gap by scoring, so that the repair material can better penetrate and adhere to the sealing ring material. Through the above operation, the sealing performance of the feature position with less material can be effectively restored. Injecting the feature position with less material in a spiral path can make the repair material evenly distributed.

[0095] By adopting the above technical solution, the depth and area of the cracks on the surface of the sealing ring are determined by using illumination and reflected light intensity detection. The crack depth can be determined based on the change in light intensity and the repair volume can be matched accordingly, achieving precise repair of surface crack characteristics. The crack position is illuminated by a lighting device to obtain the change in reflected light intensity. The crack depth and area are determined in combination with the surface image detection information, thereby accurately controlling the injection amount of repair material and effectively restoring the surface quality of the sealing ring.

[0096] By adopting the above technical solution, targeting the surface crack features on the wrinkles, the prying device is controlled to pry open the wrinkle features so that the illumination device can irradiate light onto the surface crack features, thereby determining the depth and bottom depth of the crack, and obtaining the corrected repair volume by calculating the corrected crack depth match, thereby achieving precise repair of the wrinkle cracks; this method uses the prying device to pry open the wrinkle features for repair, ensuring that the repair material can fully fill the cracks, thereby improving the repair effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0097] Figure 1 This is a schematic diagram of the overall structure of a butterfly valve according to an embodiment of the present invention;

[0098] Figure 2 This is a flow chart of a method for manufacturing a butterfly valve according to an embodiment of the present invention;

[0099] Figure 3 It is a flow chart of a method for repairing a bulge according to an embodiment of the present invention.

[0100] The parts indicated by the numerical symbols in the above drawings are as follows: 1. valve body; 2. valve disc; 3. sealing ring. DETAILED DESCRIPTION

[0101] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0102] The embodiment of the present application discloses a butterfly valve.

[0103] Reference Figure 1 A butterfly valve comprises a valve body 1 and a valve disc 2 rotatably mounted within the valve body 1. The valve disc 2 is designed to open and close to control the flow of fluid. To ensure the sealing performance of the valve when closed, a sealing ring 3 is provided circumferentially around the valve disc 2. The sealing ring 3 forms an effective sealing interface by closely contacting the inner wall of the valve body 1, preventing fluid leakage when the valve is closed.

[0104] This embodiment of the present application discloses a butterfly valve manufacturing method that identifies features of excessive and insufficient material by acquiring the weight, resistance, and surface image of the sealing ring 3. For excessive material features, edge burrs or surface protrusions can be precisely located and removed; for insufficient material features, repairs can be made by scoring the cracks and injecting molten repair material. The method can also handle perforations, cracks, and features of excessive metal in the disc 2, enabling inspection and repair of the sealing ring 3, thereby improving the sealing performance of the butterfly valve.

[0105] Reference Figure 2 , a butterfly valve manufacturing method comprises the following steps:

[0106] Step S100: Obtain the weight detection value of the sealing ring 3.

[0107] The weight detection value refers to the weight value of the sealing ring 3, which is the weight measured by a preset mass scale.

[0108] Step S101: When the weight detection value is inconsistent with the preset reference weight value, a preset blowing device is controlled to blow air circumferentially on the sealing ring 3 with a preset blowing force and obtain resistance detection information.

[0109] The reference weight value refers to the standard weight information of a normal sealing ring 3. The reference weight value is the weight of a normal sealing ring 3 preset by a technician.

[0110] Blowing force refers to the strength of the air blown on the surface of the sealing ring 3, which is a constant value preset by the technician. By blowing air on the surface of the sealing ring 3, the resistance detection information during the blowing can be obtained, thereby determining the surface type of the sealing ring 3.

[0111] The air blowing device refers to a machine that can blow air to the surface of the sealing ring 3, and can be a blowing device such as a hair dryer; it is pre-installed by a technician at the inspection station of the sealing ring 3 in the manufacturing line.

[0112] Resistance detection information refers to the resistance data on the surface of the sealing ring 3 obtained by blowing. This resistance detection information is synchronously acquired through a pressure sensor pre-installed on the blowing device. This information can be used to measure the reaction force applied to the blowing device during blowing. The magnitude of the reaction force varies depending on the blowing position and distance.

[0113] When the weight detection value is inconsistent with the preset reference weight value, it is determined that there is a problem with the sealing ring 3, so air is blown into it through the blowing device and resistance detection information is obtained; when the weight detection value is consistent with the preset reference weight value, the sealing ring 3 is normal and the detection is completed.

[0114] Step S102: When the resistance detection information is inconsistent with the preset resistance reference information, the position where the blowing device is currently blowing is marked and defined as an abnormal position, and surface image detection information of the sealing ring 3 is obtained at the abnormal position.

[0115] The abnormal position refers to a position where the surface of the sealing ring 3 is not smooth or has defects.

[0116] The surface image detection information refers to image information obtained by a preset camera at an abnormal position on the surface of the sealing ring 3.

[0117] When the resistance detection information is inconsistent with the preset resistance reference information, it means that there are abnormal features on the surface of the sealing ring 3, and the surface image detection information of the sealing ring 3 at the abnormal position is obtained; when the resistance detection information is consistent with the preset resistance reference information, the surface of the sealing ring 3 is normal, but there is an abnormality inside.

[0118] Step S103: determining the abnormal feature type according to the surface image detection information and the preset abnormal features, where the abnormal feature type includes a high-material feature and a low-material feature.

[0119] Abnormal features refer to parameters such as images and shapes of edge burrs, surface protrusions, material shortage features, perforation features, crack features, and wrinkle features on the surface of the sealing ring 3 in subsequent embodiments, which are pre-set by technicians and will not be described in detail here.

[0120] The multi-material features refer to parameters such as the image and shape of the redundant material features on the surface of the sealing ring 3, including edge burrs and surface protrusions.

[0121] The missing material feature refers to the feature of missing material on the surface of the sealing ring 3, including perforation features and crack features.

[0122] By comparing the surface image detection information with the abnormal features, when the two are consistent, the specific abnormal features are determined, such as edge burrs, surface protrusions, insufficient material features, perforation features, crack features, and wrinkle features.

[0123] Step S104: Based on the multi-material features, the multi-material feature positions are determined according to the surface image detection information, the multi-material features and the preset reference positions, and the multi-material feature types are determined according to the multi-material feature positions. The multi-material feature types include edge burrs and surface protrusions.

[0124] The reference position is a fixed reference point used to determine and identify the characteristics of multiple materials. It is pre-set by technicians and will not be described in detail here.

[0125] The multi-material characteristic position refers to the specific position of the excess material on the surface of the sealing ring 3.

[0126] Multi-material feature types refer to the specific classification of multi-material features, including edge burrs and surface protrusions.

[0127] By identifying and analyzing the surface image detection information, the positions of the multi-material features in the surface image detection information can be obtained, and then combined with the reference position to obtain the multi-material feature positions.

[0128] By analyzing the surface image detection information and multi-material feature recognition, the specific multi-material features are obtained by combining the multi-material feature positions.

[0129] Step S105 : Based on the edge burrs, control a preset trimming device to trim the edge burrs along the edge of the sealing ring 3 .

[0130] Edge burrs refer to excess material or irregular edge portions on the surface edge of the sealing ring 3 .

[0131] The trimming device refers to a machine that can trim burrs, and is a device such as a trimmer that is set by technicians at the inspection station of the sealing ring 3 in the manufacturing line.

[0132] The trimming device is controlled to move along the edge of the sealing ring 3 to the multi-material feature position, and the edge burrs are trimmed one by one. After the trimming is completed, the multi-material feature is flattened.

[0133] Step S106 : Based on the surface protrusions, a preset protrusion repair method is used to repair the surface protrusions at the multi-material feature positions.

[0134] The surface protrusion refers to the excess material on the surface of the sealing ring 3.

[0135] The bulge repair method refers to a method for repairing surface bulges. The specific method is referred to step S200 to step S208 and will not be described in detail here.

[0136] By determining the position of multi-material features, surface protrusions can be repaired to improve the quality of the repair.

[0137] Step S107 : Based on the low-material feature, determine the low-material feature position according to the surface image detection information, the low-material feature and the reference position, and repair the low-material feature at the low-material feature position using a preset low-material repair method.

[0138] The method for repairing insufficient material refers to a method for repairing insufficient material features. For the specific method, refer to steps S300 to S307 and will not be described in detail here.

[0139] The low-material feature location refers to the specific location of the low-material feature on the surface of the sealing ring 3. This location is determined by performing image recognition analysis on the low-material feature from surface image detection information. The specific image recognition and analysis method is the same as the method for determining the multi-material feature location in step S104 and is not further described here. By determining the low-material feature location, the low-material feature can be repaired specifically to improve the repair quality.

[0140] Reference Figure 3 The method for repairing surface protrusions includes the following steps:

[0141] Step S200: determining the protrusion contour and the protrusion surface area according to the surface image detection information and the surface protrusions.

[0142] A raised profile refers to the shape of raised edges on a surface.

[0143] The raised surface area refers to the actual surface area of the raised portion of the surface.

[0144] The convex contour and convex surface area are both obtained by performing image recognition analysis on the surface convexity from the surface image detection information, wherein the edge shape line of the surface convexity is taken as the convex contour, and the area enclosed by the edge shape line is taken as the convex surface area.

[0145] Step S201: determining the area enclosed by the contour according to the convex contour.

[0146] The area enclosed by the outline refers to the area enclosed by the convex outline. The calculation method of the area enclosed by the outline is common knowledge among those skilled in the art and will not be described in detail here.

[0147] Step S202: Calculate the difference between the convex surface area and the area enclosed by the contour, and define it as the correction area.

[0148] The correction area is the difference between the raised surface area and the area enclosed by the contour, and is used to determine the area that needs repair.

[0149] Step S203: matching the resection area of the material to be resected according to the corrected area.

[0150] The resection area is the area of material that needs to be removed from the surface protrusion. The corresponding resection area is determined by matching the corrected area with a pre-set resection area database. This database, pre-established by technicians through experimental testing, includes the corresponding relationship between corrected and resection areas and is not detailed here.

[0151] Step S204: matching the number of cutting positions of the material to be cut according to the area of the convex contour, and determining the cutting point position according to the number of cutting positions and the convex contour.

[0152] The number of resection positions refers to the number of resection points on the surface protrusion that need to be resected.

[0153] The resection point position refers to the specific location where the resection device resects the surface protrusion.

[0154] The corresponding number of resection positions is obtained by matching the area of the convex contour with the preset database of the number of resection positions. The database of the number of resection positions is a database set by technicians in advance through experimental testing, which includes the corresponding relationship between the area of the convex contour and the number of resection positions, and is not described in detail here.

[0155] The positions of the resection points are obtained by arranging the resection points at equal intervals on the convex contour after obtaining the distance between two adjacent resection points by calculating and analyzing the convex contour and the number of resection positions.

[0156] Step S205: determining a single resection area at each resection point position according to the resection area and the number of resection positions.

[0157] The single resection area refers to the area of material removed from a surface protrusion in a single resection. The single resection area is the same size each time it is removed. It is calculated by dividing the resection area by the number of resection locations.

[0158] Step S206: Control the preset cutting device to heat to a preset melting temperature, control the cutting device to move to each cutting point position to cut the surface protrusion with a preset cutting shape and single cutting area, and obtain the cutting image information of the cutting point position.

[0159] The cutting device refers to a device used to cut surface protrusions, which generally includes a cutting blade for cutting surface protrusions, a heating element for heating the cutting blade, and a moving part for controlling the movement of the cutting blade and the heating element.

[0160] The melting temperature refers to the preset temperature at which the blade can heat the sealing ring 3 material until it is in a molten state.

[0161] The cutout shape is a preset triangular cutout shape.

[0162] The excision image information refers to the image information of the excision point position obtained by the camera.

[0163] By controlling the heating device to heat the blade on the cutting device to the melting temperature of the material, the material is melted at high temperature, and then the cutting device is controlled to move to the cutting point position, and the raised part of the surface of the sealing ring 3 material is cut off with a triangular cutting shape and a single cutting area, and real-time image information of the cutting point is obtained.

[0164] Step S207: Based on the inconsistency between the excision image information and the preset reference section image, it is defined as a perforation, and the excision device is controlled to directly excise the surface protrusion, and the multi-material feature position after excision is repaired using a preset perforation repair method.

[0165] The reference section image refers to pre-set intact image information without perforation, which is set in advance by technical personnel and will not be described in detail here.

[0166] The perforation repair method refers to a repair method for perforation features. The specific method is referred to step S400 to step S408 and will not be described in detail here.

[0167] When the excision image information is inconsistent with the preset reference section image, it is a perforation feature. All surface protrusions are removed and repaired using the perforation repair method.

[0168] Step S208: Based on the consistency between the resection image information and the reference section image, after the resection is completed, the preset pressing device is controlled to flatten the multi-material feature position within the preset cooling time.

[0169] The pressing device refers to a device that can perform a flattening operation on the multi-material feature position after cutting, and is pre-installed by technicians at the inspection station of the sealing ring 3 in the manufacturing line.

[0170] Cooling time refers to the time required for the material to cool to a suitable flattening state after cutting. It is a parameter preset by technicians based on material properties and ambient temperature.

[0171] When the cut image information is consistent with the preset reference section image, the surface protrusions are continued to be flattened to make the material surface smooth.

[0172] The short-material repair method includes the following steps:

[0173] Step S300: determining the wear depth value of the material shortage feature position based on the surface image detection information.

[0174] The wear depth value refers to the depth value of the depression formed on the surface of the sealing ring 3 material due to wear, and is obtained by performing image recognition on the feature position of the material shortage on the surface image detection information.

[0175] Step S301: Based on the wear depth value being greater than a preset reference material thickness, it is defined as a perforation, and the short-material feature position is repaired using a preset perforation repair method.

[0176] The reference material thickness refers to a preset standard thickness value of the sealing ring 3 material, which is set by a technician in advance by measuring the thickness of the sealing ring 3 material.

[0177] The perforation repair method refers to step S400 to step S408 and is not described in detail here.

[0178] Step S302: Based on the wear depth value being no greater than the reference material thickness, it is defined as surface wear, and the volume of the missing material is determined according to the weight detection value and the reference weight value.

[0179] Surface wear refers to the characteristics of surface wear of the sealing ring 3 due to transportation, assembly or friction during the manufacturing process.

[0180] The missing material volume refers to the volume of material lost due to wear on the surface of the sealing ring 3. It is obtained by calculating and analyzing the difference between the weight detection value and the reference weight value.

[0181] Step S303: The volume of the repairing material used for repairing is obtained after the multi-material characteristics are matched according to the volume of the small amount of material.

[0182] The repair material volume refers to the volume of the multi-material feature after the multi-material feature is crushed by the cutting device. The repair material volume is consistent with the small material volume.

[0183] Step S304: determining the area and outline of the missing material according to the surface image detection information and the missing material characteristics.

[0184] The short-material area refers to the actual area size of the short-material feature.

[0185] The undercut profile refers to the edge shape of the undercut feature.

[0186] The area and contour of the material shortage are obtained by performing image recognition analysis on the material shortage features from the surface image detection information. The specific image recognition analysis method is the same as the method for determining the convex surface area and convex contour in step S200, and will not be repeated here.

[0187] Step S305: determining the position and number of lines to be drawn based on the area of the material shortage and the characteristic position of the material shortage.

[0188] The marking position refers to the specific position where the marking is performed at the feature position with little material.

[0189] The number of lines is the number of lines drawn at the feature location with little material.

[0190] The corresponding marking position and number of markings are obtained by matching the area of the material shortage with the preset marking database. The marking database is a database set by technicians through experimental testing in advance, which includes the corresponding relationship between the area of the material shortage and the marking position and number of markings. It will not be described in detail here.

[0191] Step S306: controlling the cutting device to cut the surface of the feature position with less material according to the marking position, the number of markings and the preset inclined marking angle to generate a seepage seam.

[0192] The tilted cutting angle refers to the angle at which the cutting device is tilted during cutting. The tilted angle is set by technicians through experimental tests in advance and will not be described in detail here.

[0193] The cutting device is controlled at an inclined cutting angle to mark the corresponding marking position on the surface of the feature position with less material according to the number of markings. The resulting seepage gap can guide the filling of the repair material, so that the repair material can penetrate the seepage gap more evenly, resulting in a better repair effect.

[0194] Step S307: controlling a preset heating device to melt the crushed multi-material feature for repair at a preset heating temperature, and controlling a repair device to inject the molten repair material into the low-material feature position along a preset spiral path to complete the repair.

[0195] The heating device refers to a device that can heat the repair material and is pre-installed by technicians at the inspection station of the sealing ring 3 in the manufacturing line.

[0196] The heating temperature refers to the temperature at which the repair material can be melted by heat, and is a value preset by the technician.

[0197] The spiral path is a parameter set manually by technicians and will not be described in detail here.

[0198] The repair device is controlled to inject the molten repair material into the feature position with less material in a spiral path for repair, ensuring that the repair material is evenly distributed in the feature position with less material.

[0199] The perforation repair method is used for both multi-material feature position perforation and small-material feature position perforation. The perforation repair method includes the following steps:

[0200] Step S400: determining a perforation profile according to surface image detection information and preset perforation features.

[0201] The perforation feature refers to the feature of the perforation on the surface of the sealing ring 3, which is a feature preset by a technician and will not be described in detail here.

[0202] The perforation contour refers to the edge shape of the perforation feature, which is obtained by performing image recognition analysis on the perforation feature from the surface image detection information. The specific image recognition analysis method is the same as the method for determining the convex contour in step S200 and is not repeated here.

[0203] Step S401: matching the preset material specifications of the repair material for inserting the perforation feature according to the perforation profile.

[0204] The repair material refers to the sealing ring 3 material used to repair the perforation feature, and the sealing ring 3 material can be selected from the sealing ring 3 material cut off by the cutting device.

[0205] Material specifications refer to parameters such as the size, shape, and material of the repair material. The material specifications are consistent with the size of the perforation contour.

[0206] Step S402: determining the pressing distance of the pressing device according to the preset sealing ring inner cavity height.

[0207] The sealing ring inner cavity height refers to the height value of the cavity inside the sealing ring, which is pre-set by technical personnel based on actual conditions and will not be elaborated here.

[0208] The pressing distance refers to the pressing depth required by the pressing device during the repair process, and its size is consistent with the height of the inner cavity of the sealing ring.

[0209] Step S403: Determine the volume of the repair material inserted into the perforation feature according to the perforation profile and the pressing distance.

[0210] The repair material volume is the volume of material required to repair the perforation feature. It is calculated by multiplying the area corresponding to the perforation contour by the pressing distance.

[0211] Step S404: Determine the pressing force according to the preset strength and volume of the repair material.

[0212] The strength of the repair material refers to the hardness and compressive strength of the repair material.

[0213] The pressing force refers to the amount of force applied by the pressing device to the patch material. This force is determined by matching the patch material's strength and volume with a pre-set pressing force database. This database, established by technical personnel through experimental testing, includes a mapping between the strength and volume of the patch material and the pressing force, and is not detailed here.

[0214] Step S405: determining the circumferential range area that needs to be heated in the repair material inserted into the perforation feature according to the pressing distance and the preset reserved distance.

[0215] The reserved distance refers to the space left between the repair material after it is inserted into the perforation feature and the inner surface of the sealing ring 3. The reserved distance is a distance preset by a technician and will not be described in detail here.

[0216] The circumferential range area refers to the annular area at the bottom of the repair material that needs to be heated.

[0217] Determined by calculating the pressing distance and the reserved distance.

[0218] Step S406: controlling a preset heating device to heat the circumferential range of the repair material at a preset semi-molten temperature and to circumferentially heat the edge of the perforation profile at a preset preheating temperature.

[0219] The semi-molten temperature refers to the temperature at which the repair material reaches a semi-molten state between solid and liquid during the heating process.

[0220] The preheating temperature refers to the temperature at which the edge of the perforated contour reaches a suitable bonding temperature.

[0221] The semi-melting temperature and preheating temperature are both pre-set by technicians based on the material properties and will not be described in detail here.

[0222] By heating the circumferential area and the edge of the perforation profile, it is ensured that the repair material is closely combined with the perforation profile, so that the repair effect is better.

[0223] Step S407: Control the repair material to be inserted into the perforation feature by the pressing distance and control the pressing device to press the repair material with the pressing force to flatten the repair material in the inner cavity of the sealing ring 3 and adhere it to the inner surface of the perforation feature.

[0224] The repair material is controlled to enter the perforation feature by the pressing distance, and the appropriate force is applied by adjusting the pressing device to compress the repair material so that the repair material can fill the perforation feature and adhere to its inner surface, ensuring that the repair material fits tightly with the perforation feature, thereby improving the sealing effect.

[0225] Step S408: controlling the heating device to heat the repair material and the perforation feature along the perforation contour at a preset baking temperature to achieve connection, and controlling the preset cutting device to cut off the repair material exposed outside the perforation feature after heating is completed.

[0226] The baking temperature refers to the temperature at which the repair material is completely cured when the heating device bakes the repair material. The baking temperature is a temperature preset by a technician and will not be described in detail here.

[0227] The heating device is controlled to heat the connection portion between the repair material and the perforation feature at a baking temperature, and the cutting device is controlled to cut off the repair material outside the perforation feature, thereby ensuring the sealing of the material.

[0228] The short-material feature also includes a surface crack feature. The surface crack feature repair method includes the following steps:

[0229] Step S500: determining the illumination position according to the feature position of the material shortage.

[0230] The lighting position refers to the specific location where lighting detection is required.

[0231] The illumination position is consistent with the feature position of the small amount of material.

[0232] Step S501: controlling a preset illumination device to illuminate an illumination position with a preset reference illumination intensity, and obtaining a reflected illumination intensity of reflected light at a preset receiving position.

[0233] The illumination device is a device for illumination detection of the characteristic position of the small amount of material, such as a laser device. The illumination device is pre-installed by a technician at the detection station of the sealing ring 3 in the manufacturing line.

[0234] The reference illumination intensity refers to the standard illumination intensity set by the illumination device during illumination. The reference illumination intensity is preset by a technician and will not be described in detail here.

[0235] The receiving position refers to the specific position where the reflected light is received. The receiving position is a position preset by a technician and will not be described in detail here.

[0236] Reflected light intensity refers to the light intensity captured by the receiving location.

[0237] By irradiating the illumination position and then receiving the reflected light, the corresponding crack depth can be obtained according to the change in illumination before and after.

[0238] Step S502: determining the light intensity variation according to the reference light intensity and the reflected light intensity.

[0239] The light intensity variation is the variation in light intensity, which is the difference between the reference light intensity and the reflected light intensity.

[0240] Step S503: Match the crack depth according to the light intensity variation.

[0241] Crack depth refers to the depth of a surface crack. This depth is determined by matching the light intensity variation with a pre-set crack depth database. This database, pre-established by technicians through experimental testing, includes the corresponding relationship between light intensity variation and crack depth, and is not detailed here.

[0242] Step S504: determining the surface crack area based on the surface image detection information and the position of the missing material feature.

[0243] The surface crack area refers to the actual area occupied by the surface crack feature on the surface of the sealing ring 3.

[0244] The surface crack area is obtained by performing image recognition on the surface crack features from the surface image detection information and combining it with the position analysis of the feature of the material shortage. The specific image recognition and analysis method is the same as the method for determining the surface area of the protrusion in step S200 and will not be described in detail here.

[0245] Step S505: Matching the repair volume according to the crack depth and the surface crack area.

[0246] Repair volume refers to the volume of repair material required.

[0247] The repair volume is calculated by multiplying the crack depth and the surface crack area.

[0248] Step S506: Control the repair device to repair the surface crack feature with the repair volume.

[0249] The specific repair method is the same as the repair method in step S307 and will not be described in detail here.

[0250] When wrinkles exist on the surface of the sealing ring 3 and the surface crack features are located on the wrinkles, the method for repairing the crack features on the wrinkles includes the following steps:

[0251] Step S600: determining a distance for removing wrinkles according to preset wrinkle characteristics.

[0252] The wrinkle characteristics refer to parameters such as the image and shape of the wrinkles appearing on the surface of the sealing ring 3 .

[0253] The "opening distance" refers to the specific distance a wrinkle is opened. This distance is determined by matching wrinkle characteristics with a pre-set opening distance database. The crack depth database, pre-established by technicians through experimental testing, includes the corresponding relationship between wrinkle characteristics and opening distances, and is not detailed here.

[0254] Step S601: Control the preset spreading device to spread the wrinkle feature at a spreading distance and control the illumination device to illuminate the surface crack feature on the wrinkle feature at a reference illumination intensity to obtain the light intensity variation and illumination shadow angle.

[0255] The peeling device refers to a device that can peel apart wrinkle features, such as an electric mechanical claw, which is pre-installed by technicians at the inspection station of the sealing ring 3 in the manufacturing line.

[0256] The light-shadow angle refers to the angle formed by the shadow cast by the light on the wrinkle feature and the crack feature.

[0257] The method for obtaining the light intensity variation is the same as that in step S502 and is not described in detail here. The illumination shadow angle is calculated by calculating the angle between the shadow in the acquired image information and the crack feature.

[0258] Step S602: Matching the wrinkle crack depth according to the light intensity variation.

[0259] The wrinkle crack depth refers to the depth value of the surface crack feature on the wrinkle feature. The matching method is the same as that in step S503 and will not be described here.

[0260] Step S603: Matching the bottom depth of the surface crack feature that is not illuminated by the illumination device according to the illumination shadow angle.

[0261] Bottom depth refers to the specific depth of the unilluminated area at the bottom of a surface crack feature. The corresponding crack depth is determined by matching the illumination and shadow angles with a pre-set bottom depth database. This database, pre-established by technical personnel through experimental testing, includes the corresponding relationship between illumination and shadow angles and bottom depths, and is not detailed here.

[0262] Step S604: determining the corrected crack depth according to the wrinkle crack depth and the bottom depth.

[0263] The corrected crack depth refers to the crack depth value obtained by recalculation, which is the sum of the fold crack depth and the bottom depth.

[0264] Step S605: Matching and correcting the repair volume according to the corrected crack depth and the surface crack area.

[0265] Correcting the repair volume means recalculating the volume of repair material required.

[0266] Calculated by multiplying the corrected crack depth by the surface crack area.

[0267] Step S606: Controlling the repair device to repair the surface crack features on the wrinkles with a corrected repair volume.

[0268] The specific repair method is the same as the repair method in step S307 and will not be described in detail here.

[0269] When the wrinkle feature and the surface crack feature are located at the bottom of the sealing ring 3 and cannot be directly illuminated by the illumination device, the method for repairing the surface crack feature at the bottom of the sealing ring 3 includes the following steps:

[0270] Step S700: determining wrinkle locations based on surface image detection information and preset wrinkle features.

[0271] The wrinkle position refers to the specific position of the wrinkles appearing at the bottom of the sealing ring 3.

[0272] The wrinkle position is obtained by performing image recognition analysis on wrinkle features from surface image detection information. The specific image recognition analysis method is the same as the method for determining the multi-material feature position in step S104 and will not be described in detail here.

[0273] Step S701: determining a preset installation position of the reflector according to the wrinkle position and the preset reflection distance.

[0274] The reflection distance refers to the distance between the reflector and the fold position. This distance is pre-set by the technicians and will not be described in detail here.

[0275] A reflector is a pre-set mirror that reflects light to the bottom. The reflector installation position is determined by calculating the fold position and the reflection distance.

[0276] Step S702: Control the spreading device to spread the wrinkle feature at a spreading distance, control the illumination device to generate a light source at a reference illumination intensity, and control the reflector to be set at an installation position to reflect the light source of the illumination device to the surface crack feature to obtain the light intensity change.

[0277] The method for obtaining the light intensity variation is the same as that in step S502 and is not described in detail here. The illumination shadow angle is calculated by combining the angle between the shadow in the acquired image information and the crack feature.

[0278] Step S703: controlling the reflector to rotate so as to completely illuminate the light into the bottom of the surface crack, and obtaining the rotation angle of the reflector.

[0279] The rotation angle refers to the angle required to adjust the reflector so that the light completely penetrates the bottom of the surface crack. The angle sensor pre-installed on the reflector detects the reflector's rotation angle when controlling the reflector to rotate so that the light completely penetrates the bottom of the surface crack.

[0280] Step S704: determining the crack shadow depth according to the reflection distance and the rotation angle.

[0281] Crack shadow depth refers to the depth of the shadow formed by light at the bottom of the crack after the reflector is rotated. It is calculated based on the reflection distance and rotation angle.

[0282] Step S705: Matching the wrinkle crack depth according to the light intensity variation.

[0283] The matching method is the same as that in step S602 and will not be described in detail here.

[0284] Step S706: Determine the corrected crack depth according to the wrinkle crack depth and the crack shadow depth.

[0285] The determination method is the same as that in step S604 and will not be described in detail here.

[0286] Step S707: Matching and correcting the repair volume according to the corrected crack depth and the surface crack area.

[0287] The matching method is the same as that in step S605 and will not be described in detail here.

[0288] Step S708: Controlling the repair device to repair the surface crack features on the wrinkles with the corrected repair volume.

[0289] The specific repair method is the same as the repair method in step S307 and will not be described in detail here.

[0290] The sealing ring 3 is assembled with the valve disc 2. When the valve disc 2 is over-materialized, the friction between the two causes the sealing ring 3 to wear. The method for handling the over-materialization of the valve disc 2 includes the following steps:

[0291] Step S800: Acquire image information of the valve flap 2.

[0292] The valve disc 2 image information refers to the image of the metal surface of the valve disc 2 obtained by the camera.

[0293] Step S801: determining the scraping position, scraping volume and scraping profile according to the image information of the valve disc 2 and the preset metal multi-material characteristics.

[0294] The scraping location refers to the specific location of the metal multi-material feature that needs to be scraped.

[0295] The scrape volume is the volume of the metal feature that needs to be scraped away.

[0296] The scraping profile refers to the edge shape of the metal feature that needs to be scraped.

[0297] The metal multi-material feature refers to the image, shape and other parameters of the excess metal part on the surface of the valve disc 2. The metal multi-material feature is data pre-set by technicians, including the metal multi-material feature on the valve disc 2, which will not be described in detail here.

[0298] The scraping volume is obtained by performing image recognition and comparison analysis on the metal multi-material features from the surface image detection information; the scraping position and scraping contour are obtained by image recognition analysis. The specific image recognition and analysis method is the same as the method for determining the multi-material feature position in step S104 and the raised contour in step S200, and will not be repeated here.

[0299] Step S802: Determine the maximum width of the scraped outline according to the scraped outline.

[0300] The maximum width of the contour refers to the width of the longest part of the scraped contour. The width values of all scraped contours are calculated and the maximum width is selected after comparison.

[0301] Step S803: matching the preset width specification of the scraper device according to the maximum width of the profile.

[0302] The scraper device is a pre-set device for scraping off metal multi-material features, such as a stainless steel scraper. The scraper device is pre-set by a technician on the inspection station of the sealing ring 3 in the manufacturing line.

[0303] The width specification refers to the blade width of the scraper, determined by matching the maximum profile width with a pre-set width specification database. The bottom depth database, pre-established by technical personnel through experimental testing, includes the correspondence between the maximum profile width and the width specification, and is not detailed here.

[0304] Step S804: matching the scraping force of the scraper device according to the scraping volume and the preset metal material.

[0305] Scraping force refers to the force required by the scraper to remove multiple features from metal materials. The corresponding crack depth is determined by matching the scraping volume and metal material with a pre-set scraping force database. This scraping force database, pre-established by technical personnel through experimental testing, includes the corresponding relationship between scraping volume and metal material, and is not detailed here.

[0306] The metal material refers to the material type of the metal on the surface of the valve disc 2 which is preset by the technicians.

[0307] Step S805: Select a scraper device according to the width specification, control the scraper device to move to the scraping position, and scrape the metal multi-material features at the scraping position with a scraping force, and re-identify whether there are metal multi-material features at the scraping position based on the image information of the valve disc 2 until the metal multi-material features are scraped off.

[0308] The scraper device selected according to the appropriate width specification can efficiently scrape off the metal multi-material features. By re-identifying the image information of the valve disc 2, it can be confirmed whether there is any residue, so that the metal multi-material can be adjusted and scraped off cleanly.

[0309] Based on the same inventive concept, an embodiment of the present invention provides a butterfly valve manufacturing system, comprising:

[0310] The acquisition module is used to obtain the weight detection value of the sealing ring 3, resistance detection information, surface image detection information of the sealing ring 3, resection image information of the resection point position, wear depth value of the feature position of the small amount of material, reflected light intensity of the reflected light, light intensity change, light shadow angle, rotation angle of the reflector and image information of the valve disc 2.

[0311] A memory is used to store a program of a butterfly valve manufacturing method.

[0312] The program in the memory can be loaded and executed by the processor to implement a butterfly valve manufacturing method.

[0313] The above description is merely a preferred embodiment of the present invention. The scope of protection of the present invention is not limited to the above embodiment. All technical solutions based on the concept of the present invention are within the scope of protection of the present invention. It should be noted that for those skilled in the art, various improvements and modifications that do not depart from the principles of the present invention should also be considered within the scope of protection of the present invention.

Claims

1. A method for manufacturing a butterfly valve, characterized in that: include: Obtaining the weight detection value of the sealing ring (3); When the weight detection value is inconsistent with the preset reference weight value, a preset blowing device is controlled with a preset blowing force to blow air circumferentially on the sealing ring (3) and obtain resistance detection information; When the resistance detection information is inconsistent with the preset resistance reference information, the position where the blowing device is currently blowing is marked and defined as an abnormal position, and surface image detection information of the sealing ring (3) is obtained at the abnormal position; Determine the abnormal feature type based on the surface image detection information and the preset abnormal features. Feature types include multi-material features and small-material features; Based on the multi-material features, the multi-material feature positions are determined according to the surface image detection information, the multi-material features and the preset reference positions, and the multi-material feature types are determined according to the multi-material feature positions, where the multi-material feature types include edge burrs and surface protrusions; Based on the edge burrs, controlling a preset trimming device to trim the edge burrs along the edge of the sealing ring (3); Based on the surface protrusions, the surface protrusions are repaired at the multi-material feature positions using a preset protrusion repair method; Based on the low-material feature, the low-material feature position is determined according to the surface image detection information, the low-material feature and the reference position, and the low-material feature is repaired at the low-material feature position using a preset low-material repair method.

2. A method for manufacturing a butterfly valve according to claim 1, characterized in that: Bump repair methods for repairing surface bumps include: determining a convex contour and a convex surface area based on surface image detection information and surface convexities; Determine the area enclosed by the contour based on the raised contour; The difference between the raised surface area and the area enclosed by the contour was calculated and defined as the corrected area; Match the resection area of the material to be resected according to the correction area; Match the number of cutting positions of the material to be cut according to the area of the raised contour, and determine the cutting point position according to the number of cutting positions and the raised contour; Determine the single resection area of each resection point according to the resection area and the number of resection positions; Controlling a preset excision device to heat to a preset melting temperature, controlling the excision device to move to each excision point position to excise the surface protrusion with a preset excision shape and single excision area, and obtaining excision image information of the excision point position; Based on the inconsistency between the resection image information and the preset reference section image, it is defined as a perforation, and the resection device is controlled to directly remove the surface protrusion, and the multi-material feature position after the resection is repaired using a preset perforation repair method; Based on the consistency between the resection image information and the reference section image, after the resection is completed, the preset pressing device is controlled to flatten the multi-material feature position within the preset cooling time.

3. A method for manufacturing a butterfly valve according to claim 1, characterized in that: The methods for repairing small amounts of material include: Determine the wear depth value of the feature position with less material based on the surface image detection information; If the wear depth is greater than the preset reference material thickness, it is defined as a perforation, and the pre-set perforation repair method is used to repair the feature position with less material. Based on the wear depth value not being greater than the reference material thickness, it is defined as surface wear, and the volume of the missing material is determined based on the weight test value and the reference weight value; The volume of the repair material used for repairing after the multi-material characteristics are matched according to the volume of the small material; Determine the area and outline of the missing material based on the surface image detection information and the missing material characteristics; The marking position and number of markings are matched with the feature position of the less-material area; The cutting device is controlled to cut the surface of the feature position with less material by using the marking position, the number of markings and the preset inclined cutting angle to produce the seepage seam; The preset heating device is controlled to melt the crushed multi-material feature for repair at a preset heating temperature, and the repair device is controlled to inject the molten repair material into the small-material feature position along a preset spiral path to complete the repair.

4. A method for manufacturing a butterfly valve according to any one of claims 2 or 3, characterized in that: The perforation repair method is used for both multi-material feature position perforation and small-material feature position perforation. The perforation repair method includes: Determine the perforation profile based on surface image detection information and preset perforation features; matching a preset material specification of a patch material for inserting into the perforation feature according to the perforation profile; Determine the pressing distance of the pressing device according to the preset sealing ring inner cavity height; Determining the volume of repair material inserted into the perforated feature based on the perforation profile and the pressing distance; Determine the pressing force according to the preset strength and volume of the repair material; Determining a circumferential range of a repair material inserted into a perforated feature that needs to be heated based on a pressing distance and a preset reserved distance; Controlling a preset heating device to heat a circumferential range of the repair material at a preset semi-melting temperature and to circumferentially heat an edge position of the perforation profile at a preset preheating temperature; Controlling the insertion of the repair material into the perforation feature by a pressing distance and controlling the pressing device to press the repair material with a pressing force so as to flatten the repair material in the inner cavity of the sealing ring (3) and adhere it to the inner surface of the perforation feature; The heating device is controlled to heat the repair material and the perforation feature along the perforation contour at a preset baking temperature to achieve connection. After the heating is completed, the preset cutting device is controlled to cut off the repair material exposed outside the perforation feature.

5. A method for manufacturing a butterfly valve according to claim 3, characterized in that: The lack of material characteristics also include surface crack characteristics, and the surface crack feature repair methods include: Determine the lighting position according to the feature position of the small amount of material; Controlling a preset illumination device to illuminate the illumination position with a preset reference illumination intensity, and obtaining the reflected illumination intensity of the reflected light at a preset receiving position; Determine the light intensity change according to the reference light intensity and the reflected light intensity; Match the crack depth according to the change in light intensity; Determine the surface crack area based on surface image detection information and the position of the missing material feature; Match the repair volume according to the crack depth and surface crack area; The repair device is controlled to repair the surface crack features with a repair volume.

6. A method for manufacturing a butterfly valve according to claim 5, characterized in that: When wrinkles exist on the surface of the sealing ring (3) and the surface crack features are located on the wrinkles, the method for repairing the crack features on the wrinkles includes: Determining the distance for spreading the folds according to the preset fold characteristics; Controlling a preset spreading device to spread the wrinkle feature at a spreading distance and controlling an illumination device to illuminate the surface crack feature on the wrinkle feature at a reference illumination intensity to obtain a light intensity variation and an illumination shadow angle; Match the wrinkle crack depth according to the change in light intensity; Match the bottom depth of the surface crack feature that is not illuminated by the illumination device according to the illumination shadow angle; Determine the corrected crack depth based on the fold crack depth and bottom depth; Match the corrected repair volume based on the corrected crack depth and surface crack area; The repair device is controlled to repair the surface crack features on the wrinkles by correcting the repair volume.

7. A method for manufacturing a butterfly valve according to claim 6, characterized in that: When the wrinkle feature and the surface crack feature are located at the bottom of the sealing ring (3) and cannot be directly illuminated by the illumination device, the method for repairing the surface crack feature at the bottom of the sealing ring (3) includes: Determine the wrinkle position based on surface image detection information and preset wrinkle features; Determining the installation position of the preset reflector according to the fold position and the preset reflection distance; Controlling the peeling device to peel the wrinkle feature apart at a peeling distance, controlling the illumination device to generate a light source at a reference light intensity, and controlling the reflector to be set at an installation position to reflect the light source of the illumination device onto the surface crack feature, thereby obtaining a light intensity change; controlling the reflector to rotate so as to completely illuminate the light into the bottom of the surface crack, and obtaining the rotation angle of the reflector; Determine the crack shadow depth based on the reflection distance and rotation angle; Match the wrinkle crack depth according to the change in light intensity; Determine the corrected crack depth based on the fold crack depth and crack shadow depth; Match the corrected repair volume based on the corrected crack depth and surface crack area; The repair device is controlled to repair the surface crack features on the wrinkles by correcting the repair volume.

8. The method for manufacturing a butterfly valve according to claim 1, characterized in that: The sealing ring (3) and the valve disc (2) are assembled. When the valve disc (2) is over-filled, the two rub against each other, thereby causing the sealing ring (3) to wear. The method for handling the over-filled valve disc (2) includes: Obtaining image information of the valve disc (2); Determining a scraping position, a scraping volume, and a scraping profile based on image information of the valve disc (2) and preset metal multi-material features; Determine the maximum width of the profile based on the scraping profile; Match the preset width specification of the scraper device according to the maximum width of the profile; Match the scraping force of the scraper device according to the scraping volume and the preset metal material; A scraper device is selected according to the width specification, the scraper device is controlled to move to the scraping position, and the metal multi-material feature at the scraping position is scraped with a scraping force, and whether the metal multi-material feature exists at the scraping position is re-identified according to the image information of the valve disc (2) until the metal multi-material feature is scraped.

9. A butterfly valve manufacturing system, characterized in that: include: An acquisition module is used to acquire a weight detection value of the sealing ring (3), resistance detection information, surface image detection information of the sealing ring (3), excision image information of the excision point position, wear depth value of the less-material characteristic position, reflected light intensity of the reflected light, light intensity variation, light shadow angle, rotation angle of the reflector, and image information of the valve disc (2); A memory for storing a program of a butterfly valve manufacturing method according to any one of claims 1 to 8; The program in the memory can be loaded and executed by the processor to implement a butterfly valve manufacturing method.

10. A butterfly valve manufactured by the method for manufacturing a butterfly valve according to any one of claims 1 to 8, characterized in that: The valve comprises a valve body (1) and a valve flap (2) rotatably mounted in the valve body (1) for opening and closing, wherein the valve flap (2) is circumferentially provided with a sealing ring (3) for abutting against the inner wall of the valve body (1) to form a seal.

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