A kind of detection equipment and detection method of valve casting production defects

Abstract

The present invention relates to the field of detection technology, and specifically to a detection device for valve casting production defects and a detection method thereof. The present invention provides a detection device for valve casting production defects, comprising: a base; a boosting mechanism, the boosting mechanism comprises a booster fixedly connected to the top of the base, the booster is fixedly connected to an intake curved pipe at the air inlet end away from the air flow stirring mechanism, and the intake curved pipe is provided with a rotating disk and a storage ball for spraying and storing photosensitive aerosol particles; an air flow stirring mechanism, the air flow stirring mechanism comprises a hollow ball arranged on the top of the base. The photosensitive aerosol particles can be mixed with air through the booster, the rotating disk and the storage ball, wherein the booster provides a suction source, thereby driving the rotating disk and the storage ball to rotate, and the suction drives the rotation of multiple rotating disks so that the photosensitive aerosol particles entering the rotating disk are mixed with the air sucked in by the suction, thereby achieving mutual mixing with the photosensitive aerosol particles.

Description

Technical Field

[0001] The invention relates to the field of detection technology, and in particular to a detection device and a detection method for production defects of valve castings. Background Art

[0002] Valve castings are one of the important components of valve manufacturing. During the casting process, various defects may occur, such as pores, slag inclusions, sand holes, shrinkage, etc. Therefore, testing equipment is needed to monitor and control the manufacturing process to ensure that the quality of the castings meets the standard requirements.

[0003] There is an existing detection device for valve casting production defects. When in use, it usually only detects the more obvious defects of the valve, but cannot detect smaller defects, resulting in incomplete detection of the valve, affecting the quality of the valve. At the same time, the existing equipment cannot detect the size and depth of the valve defects, and thus cannot determine whether the defects of the valve are within the error range of product production. Summary of the invention

[0004] In view of the above-mentioned shortcomings of the prior art, the present invention provides a valve casting production defect detection device, which can effectively solve the problem that the prior art cannot perform comprehensive inspection of valves and cannot determine whether the defects of the valves are within the error range of product production.

[0005] To achieve the above objectives, the present invention is implemented through the following technical solutions:

[0006] The present invention provides a valve casting production defect detection device, comprising:

[0007] Pedestal;

[0008] A booster mechanism, the booster mechanism comprising a booster fixedly connected to the top of the base, the booster having an air intake curved pipe fixedly connected to an air intake end away from the airflow stirring mechanism, the air intake curved pipe being provided with a rotating disk and a storage ball for spraying and storing photosensitive aerosol particles;

[0009] An airflow stirring mechanism, the airflow stirring mechanism comprises a hollow ball arranged on the top of the base, and a hollow ball for guiding the mixed airflow is arranged inside the hollow ball, the inside of the hollow ball is rotatably connected to a rotating rod, and the rotating rod is provided with a mixing ball and a flow guide for stirring and pushing the mixed airflow;

[0010] A defect detection mechanism, the defect detection mechanism includes a detection box fixedly connected to the top of a base, the inner walls on both sides of the detection box are horizontally fixedly connected with at least two electric telescopic rods, the end of the electric telescopic rod away from the inner wall of the detection box is fixedly connected with a fixed cover, at least two rotators are arranged in parallel inside the fixed cover, the inner wall of the detection box is located below the fixed cover and is fixedly connected with an airflow diversion shell, the airflow diversion shell is rotatably connected with a diversion spiral, and the spiral surface of the diversion spiral is fixedly connected with an elliptical protrusion.

[0011] Preferably, a plurality of air holes are formed in a circular array at one end of the intake curved pipe away from the intake end, a fixed rod is fixedly connected to the end of the intake curved pipe away from the intake end, and the fixed rod is located at the center of the air holes in the circular array, the rod body of the fixed rod is rotatably connected to a rotating disk, a plurality of inclined paddles are fixedly connected to the outer circumferential surface of the rotating disk in a circular array, a plurality of storage balls are fixedly connected to a side of the rotating disk away from the intake curved pipe in a circular array with the fixed rod as the center, an end of the fixed rod away from the intake curved pipe is fixedly connected to an air gathering hood, the rotating disk and the storage balls are both located in the air gathering hood, and the air outlet end of the supercharger close to the airflow stirring mechanism is fixedly connected to an air outlet pipe.

[0012] Preferably, the airflow stirring mechanism includes a hollow ball fixedly connected to the top of the base, the airflow stirring mechanism and the boosting mechanism are arranged in parallel, and the boosting mechanism is located in front of the airflow stirring mechanism, the side of the hollow ball close to the supercharger is fixedly connected to the end of the air outlet pipe away from the supercharger, the side of the hollow ball close to the defect detection mechanism is fixedly connected to the first connecting pipe, the outer peripheral surface of the first connecting pipe is fixedly connected to the first electric valve, a hollow ball is arranged inside the hollow ball, both ends of the hollow ball are fixedly connected to support rods, the end of the support rod away from the hollow ball is fixedly connected to the inside of the hollow ball, the hollow ball is suspended in the hollow ball by the support rod, and the spherical surface of the hollow ball is provided with a plurality of rhombus holes surrounding the array,

[0013] Preferably, at least two mixing balls are fixedly connected to the shaft of the rotating rod, a plurality of mixing grooves are provided on the spherical surface of the mixing ball in an array around the horizontal direction of the rotating rod, and a plurality of deflectors are fixedly connected in an array around two mixing balls on the same radial line of the rotating rod.

[0014] Preferably, a valve is provided inside the detection box, and the valve has a valve handwheel and a valve flange. A clamping groove is provided at the center position of the outer peripheral surface of the rotator, and the clamping groove is in contact with the valve handwheel. A snap cover is movably connected to the opening at the top of the detection box, and the top of the snap cover is fixedly connected with an air relief valve and a pressure gauge, the inlet and outlet ends of the valve flange are movably and air-tightly connected with a transfer tube, and one end of the transfer tube away from the valve flange is fixedly connected to an air flow diversion shell, the input end of the valve flange is movably and air-tightly connected with an air supply pipe, and one end of the air supply pipe away from the input end of the valve flange is fixedly connected with a converging pipe.

[0015] Preferably, both sides of the outside of the airflow diversion shell are fixedly connected with air diversion pipes, and the air diversion pipes and the airflow diversion shell are located at the same horizontal position, and a plurality of groups of air outlet holes are arranged in a horizontal array on the opposite side of the outer peripheral surface of the air diversion pipe, and each group of air outlet holes has at least three holes distributed in a fan shape, and the air diversion pipes are fixedly connected to the inner walls around the detection box, and at least two ultraviolet rods are fixedly connected to the inner walls on both sides of the detection box.

[0016] Preferably, a motor is fixedly connected to the top of the base, a vacuum pump is fixedly connected to the output end of the motor close to the defect detection mechanism, a second connecting pipe is fixedly connected to the side of the vacuum pump away from the motor, a second electric valve is fixedly connected to the outer peripheral surface of the second connecting pipe, the first connecting pipe and the second connecting pipe are both fixedly connected to the converging pipe, the converging pipe is fixedly connected to one end of the gas pipe away from the input end of the valve flange, and the motor and the vacuum pump are both arranged on the top of the base opposite to the booster.

[0017] A detection method for a valve casting production defect detection device, the detection method sprays mixed air containing photosensitive aerosol particles on the valve, and makes the photosensitive aerosol particles in the mixed air adhere to the valve defect through air pressure, and finally makes the photosensitive aerosol particles color through ultraviolet rays, so as to realize the detection of valve casting production defects, and specifically comprises the following steps:

[0018] Photosensitive aerosol particles are mixed with air: The suction force generated by the booster when the test box is pressurized drives the rotating disk to rotate in the fixed rod, so that the storage ball storing the photosensitive aerosol particles in the rotating disk is centrifugal. The photosensitive aerosol particles enter the rotating disk from the storage ball. The rotating disk is made of porous materials, so when the photosensitive aerosol particles enter the rotating disk, the suction force of the booster separates the photosensitive aerosol particles from the rotating disk and is sucked into the booster together with the air, thereby completing the preliminary mixing of the air and the photosensitive aerosol particles.

[0019] Refinement of photosensitive aerosol particles mixed in the air: The mixed gas of air and photosensitive aerosol particles is transported into the hollow ball through the supercharger, so that the mixed gas stays in the hollow ball for a short time. The air pressure generated by the supercharger transporting the mixed gas will make the mixed gas enter the hollow ball through the diamond holes of the hollow ball, and the deflector in the hollow ball will rotate under the action of the air pressure, thereby driving the mixing ball to rotate. The mixing ball can further refine the photosensitive aerosol particles in the mixed gas, making it easier to attach to the valve defects;

[0020] Photosensitive aerosol particles are attached to the valve; the mixed gas in the gas pipe booster is continuously transported to the detection box, causing the air pressure inside the detection box to increase continuously. As the air pressure increases, the density of gas molecules will also increase, causing the photosensitive aerosol particles in the mixed gas to adhere to the valve defects, and then the photosensitive aerosol particles are colored by the irradiation of the ultraviolet rod, and finally the defects are judged according to the colored area.

[0021] Compared with the known prior art, the technical solution provided by the present invention has the following beneficial effects:

[0022] 1. The detection equipment for valve casting production defects can mix photosensitive aerosol particles with air through a booster, a rotating disk and a storage ball, wherein the booster provides a suction source, thereby driving the rotating disk and the storage ball to rotate, wherein the storage ball stores photosensitive aerosol particles inside, and under the action of centrifugal force, the photosensitive aerosol particles enter the rotating disk from the storage ball, and the suction drives the rotation of multiple rotating disks to mix the photosensitive aerosol particles entering the rotating disk with the air inhaled by the suction, thereby achieving mutual mixing with the photosensitive aerosol particles.

[0023] 2. The detection equipment for production defects of valve castings can further mix the mixed gas composed of photosensitive aerosol particles and air through hollow balls and hollow balls, wherein the hollow balls are used to store the mixed gas for a short time, and the mixed gas entering the hollow balls enters the hollow balls under the action of the supercharger air pressure, and drives the guide device in the hollow balls to rotate, thereby driving the mixing ball to rotate, and the photosensitive aerosol particles in the mixed gas are refined by the mixing balls to further mix them with the air.

[0024] 3. The detection equipment for valve casting production defects can input the mixed gas into the detection box through the fixed cover and the air flow diverter, so that the photosensitive aerosol particles in the mixed gas adhere to the defects of the valve. Because the defects of the valve usually have a certain degree of roughness and irregularity, these characteristics provide a reliable surface for the attachment of photosensitive aerosol particles. Finally, through the irradiation of the ultraviolet rod, the photosensitive aerosol particles attached to the valve defects are colored. Finally, the defects are judged according to the colored area, thereby improving the comprehensiveness of valve defect detection. In addition, the larger the valve defect area, the more photosensitive aerosol particles attached, the higher the color brightness, and the higher the accuracy of valve defect detection. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the prior art descriptions are briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention, and for ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0026] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0027] Figure 2 It is a schematic structural diagram of the overall side of the present invention;

[0028] Figure 3 It is a structural schematic diagram of the supercharger of the present invention;

[0029] Figure 4 It is a structural schematic diagram of the air flow stirring ball of the present invention;

[0030] Figure 5 It is a schematic diagram of the structure of the stirring ball of the present invention;

[0031] Figure 6 It is a structural schematic diagram of the stirring rod of the present invention;

[0032] Figure 7 It is a structural schematic diagram of the detection mechanism of the present invention;

[0033] Figure 8 It is a structural schematic diagram of the cross section of the detection mechanism of the present invention;

[0034] Fig. 9 It is a structural schematic diagram of the rotating device of the present invention;

[0035] Fig.10 It is a structural schematic diagram of the spray pipe of the present invention;

[0036] Fig.11 For the present invention Fig.10 Schematic diagram of the structure enlarged at point A in the middle.

[0037] Reference numerals:

[0038] 1. Base;

[0039] 2. Supercharger; 21. Supercharger; 22. Intake curved pipe; 221. Air hole; 23. Fixed rod; 24. Rotating plate; 241. Tilt paddle; 25. Storage ball; 26. Exhaust pipe; 27. Air hood;

[0040] 3. air flow stirring mechanism; 31. hollow ball; 32. hollow ball; 321. support rod; 33. multi-diamond hole; 34. rotating rod; 35. mixing ball; 351. mixing tank; 36. flow guide; 37. first connecting pipe; 38. first electric valve;

[0041] 4. Defect detection mechanism; 41. Detection box; 411. Telescopic rod; 42. Fixed cover; 421. Rotator; 422. Clamping groove; 43. Valve; 44. Transfer tube; 45. Air flow diversion shell; 46. Air pipe; 47. Snap cover; 471. Air release valve; 472. Pressure gauge; 48. Air distribution pipe; 481. Air outlet; 49. Ultraviolet rod; 410. Diversion spiral device; 4101. Elliptical convex block;

[0042] 5. Motor; 51. Vacuum pump; 52. Second connecting pipe; 53. Second electric valve; 54. Converging pipe. DETAILED DESCRIPTION

[0043] In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are 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.

[0044] The present invention will be further described below in conjunction with the embodiments.

[0045] Example: Refer to Figures 1 to 11 , a valve casting production defect detection device, comprising:

[0046] Base 1;

[0047] A booster mechanism 2, the booster mechanism 2 comprising a booster 21 fixedly connected to the top of the base 1, the booster 21 having an air inlet end away from the airflow stirring mechanism 3 fixedly connected to an air inlet curved pipe 22, the air inlet curved pipe 22 being provided with a rotating disk 24 and a storage ball 25 for spraying and storing photosensitive aerosol particles;

[0048] An airflow stirring mechanism 3, the airflow stirring mechanism 3 comprises a hollow ball 31 arranged on the top of the base 1, and a hollow ball 32 for guiding the mixed airflow is arranged inside the hollow ball 31, and a rotating rod 34 is rotatably connected inside the hollow ball 32, and a mixing ball 35 and a flow guide 36 for stirring and pushing the mixed airflow are arranged in the rotating rod 34;

[0049] The defect detection mechanism 4 comprises a detection box 41 fixedly connected to the top of the base 1, the inner walls on both sides of the detection box 41 are horizontally fixedly connected with at least two electric telescopic rods 411, the end of the electric telescopic rod 411 away from the inner wall of the detection box 41 is fixedly connected with a fixed cover 42, at least two rotators 421 are arranged in parallel inside the fixed cover 42, the inner wall of the detection box 41 is located below the fixed cover 42 and is fixedly connected with an airflow diversion shell 45, the airflow diversion shell 45 is rotatably connected with a diversion spiral 410, and the spiral surface of the diversion spiral 410 is fixedly connected with an elliptical protrusion 4101.

[0050] The boost mechanism 2 drives the rotating disk 24 and the storage ball 25 to rotate through the suction force generated during operation, and the storage ball 25 stores photosensitive aerosol particles. At this time, the storage ball 25 is subjected to the centrifugal force generated by the rotation, so that the photosensitive aerosol particles stored in the storage ball 25 enter the rotating disk 24. At the same time, the rotating disk 24 is made of porous material, so the photosensitive aerosol particles entering the rotating disk 24 will also be separated from the rotating disk 24 under the action of centrifugal force, and preliminarily mixed with the air sucked by the suction. The preliminarily mixed mixed gas will be transported to the airflow stirring mechanism 3 through the boost mechanism, and the mixing ball 35 in the airflow stirring mechanism 3 can refine the photosensitive aerosol particles to make them more micro. Small particles, at the same time, the deflector 36 can further mix the refined photosensitive aerosol particles with air, and finally transport them to the detection box 41. As the booster mechanism 2 continuously transports the mixed gas into the detection box 41, the air pressure inside the detection box 41 will gradually increase. As the air pressure increases, the detection box 41 will be in a high-pressure environment. Under high-pressure conditions, the gas molecules are denser, which will increase the interaction between the gas molecules and the solid surface. Therefore, when the photosensitive aerosol particles approach the defect of the valve 43, the adhesion of the gas molecules will increase, thereby promoting the particles to adhere to the valve defect. Finally, the photosensitive aerosol particles attached to the valve defect can be colored by irradiation with the ultraviolet rod 49.

[0051] Reference Figures 1 to 3A plurality of air holes 221 are formed in a circular array at one end of the air intake curved pipe 22 away from the air intake end, a fixed rod 23 is fixedly connected to the one end of the air intake curved pipe 22 away from the air intake end, and the fixed rod 23 is located at the center of the circular array of air holes 221, a rotating disk 24 is rotatably connected to the rod body of the fixed rod 23, a plurality of inclined paddles 241 are fixedly connected to the outer peripheral surface of the rotating disk 24 in a circular array, a plurality of storage balls 25 are fixedly connected to the one side of the rotating disk 24 away from the air intake curved pipe 22 with the fixed rod 23 as the center in a circular array, an end of the fixed rod 23 away from the air intake curved pipe 22 is fixedly connected to an air collecting cover 27, the rotating disk 24 and the storage balls 25 are both located in the air collecting cover 27, and an air outlet end of the supercharger 21 close to the air flow stirring mechanism 3 is fixedly connected to an air outlet pipe 26

[0052] The intake curved pipe 22 can use the air holes 221 to collect the suction airflow generated by the supercharger 21 when it is working, so that it can be concentrated on the rotating disk 24, thereby driving the rotating disk 24 to rotate, and the inclined paddles 241 in the rotating disk 24 can maximize the effect of the airflow on the rotating disk 24.

[0053] Reference Figures 4 to 6 The airflow stirring mechanism 3 includes a hollow ball 31 fixedly connected to the top of the base 1. The airflow stirring mechanism 3 is arranged in parallel with the boosting mechanism 2, and the boosting mechanism 2 is located in front of the airflow stirring mechanism 3. The side of the hollow ball 31 close to the supercharger 21 is fixedly connected to the end of the air outlet pipe 26 away from the supercharger 21. The side of the hollow ball 31 close to the defect detection mechanism 4 is fixedly connected to the first connecting pipe 37. The outer peripheral surface of the first connecting pipe 37 is fixedly connected to the first electric valve 38. A hollow ball 32 is arranged inside the hollow ball 31. Both ends of the hollow ball 32 are fixedly connected to support rods 321. The end of the support rod 321 away from the hollow ball 32 is fixedly connected to the inside of the hollow ball 32. The hollow ball 32 is suspended in the hollow ball 32 by the support rod 321, and the spherical surface of the hollow ball 32 is provided with a plurality of rhombus holes 33 around the array.

[0054] The first connecting pipe 37 can be closed and opened by the first electric valve 38 , thereby preventing the vacuum pump 51 from causing damage to the airflow stirring mechanism 3 and the pressurizing mechanism 2 when performing vacuum processing inside the detection box 41 .

[0055] Reference Figures 7 to 10A valve 43 is arranged inside the detection box 41, and the valve 43 has a valve handwheel and a valve flange. A clamping groove 422 is opened at the center position of the outer peripheral surface of the rotator 421, and the clamping groove 422 contacts the valve handwheel. A snap cover 47 is movably snapped at the opening on the top of the detection box 41, and a relief valve 471 and a pressure gauge 472 are fixedly connected to the top of the snap cover 47. The inlet and outlet ends of the valve flange are movably and air-tightly connected to a transfer tube 44, and one end of the transfer tube 44 away from the valve flange is fixedly connected to an air flow diversion shell 45, and the input end of the valve flange is movably and air-tightly connected to an air supply pipe 46, and one end of the air supply pipe 46 away from the input end of the valve flange is fixedly connected to a converging pipe 54.

[0056] The two sides of the outside of the airflow diversion shell 45 are fixedly connected with an air diversion pipe 48, and the air diversion pipe 48 and the airflow diversion shell 45 are located at the same horizontal position, and the opposite side of the outer peripheral surface of the air diversion pipe 48 is provided with a plurality of groups of air outlet holes 481 in a horizontal array, and each group of air outlet holes 481 has at least three air outlet holes distributed in a fan shape, and the air diversion pipe 48 is fixedly connected to the inner walls of the detection box 41, and at least two ultraviolet rods 49 are fixedly connected to the inner walls on both sides of the detection box 41.

[0057] The rotator 421 in the detection box 41 can realize the slow rotation of the valve handwheel in the valve 43, so that the vacuum pump 51 can detect the sealing effect of the valve 43 to ensure the gradual detection of the valve 43, thereby improving the accuracy of the detection of the valve 43, and the air flow diversion shell 45 can collect the mixed gas delivered by the boosting mechanism 2, and distribute it evenly to various positions inside the detection box 41 through the gas distribution pipe 48, so that the valve 43 placed inside the detection box 41 can fully receive the mixed gas delivered by the boosting mechanism 2.

[0058] Reference Figure 1 , Figures 8 to 11 A motor 5 is fixedly connected to the top of the base 1, and a vacuum pump 51 is fixedly connected to the output end of the motor 5 close to the defect detection mechanism 4. A second connecting pipe 52 is fixedly connected to the side of the vacuum pump 51 away from the motor 5, and a second electric valve 53 is fixedly connected to the outer peripheral surface of the second connecting pipe 52. The first connecting pipe 37 and the second connecting pipe 52 are both fixedly connected to the convergence pipe 54, and the convergence pipe 54 is fixedly connected to one end of the air supply pipe 46 away from the input end of the valve flange. The motor 5 and the vacuum pump 51 are both arranged on the top of the base 1 relative to the supercharger 21.

[0059] At least two mixing balls 35 are fixedly connected to the shaft of the rotating rod 34, and a plurality of mixing grooves 351 are arranged in an array around the spherical surface of the mixing ball 35 along the horizontal direction of the rotating rod 34. A plurality of deflectors 36 are fixedly connected in an array around two mixing balls 35 on the same radial line of the rotating rod 34.

[0060] The power of the vacuum pump 51 comes from the motor 5, and the vacuum pump 51 can evacuate the test box 41 before testing, so as to remove impurities on the surface of the valve 43 placed in the test box 41, and prevent the later photosensitive aerosol particles from being unable to accurately adhere to the defects of the valve 43 due to the presence of impurities.

[0061] The operating principle of this embodiment is as follows:

[0062] Step 1: Start the equipment. At this time, the motor 5 will start first. As the motor 5 starts, the motor 5 will drive the vacuum pump 51 to rotate. At this time, the second electric valve 53 of the second connecting pipe 52 in the vacuum pump 51 is opened. The working mode of the second electric valve 53 is opposite to that of the first electric valve 38, that is, when the second electric valve 53 is opened, the first electric valve 38 is closed, and vice versa. The second connecting pipe 52 is connected with the converging pipe 54 to evacuate the air inside the detection box 41. At this time, the valve 43 is placed inside the detection box 41 by default. While the vacuum pump 51 rotates, the rotator 421 in the fixed cover 42 contacts the valve handwheel of the valve 43 under the push of the telescopic rod 411. At this time, the valve 43 is closed by default. The rotator 421 is in a closed state, and the rotator 421 contains a rotating motor. Therefore, when the rotator 421 contacts the valve handwheel, the clamping groove 422 in the rotator 421 has strong friction, which can drive the valve handwheel to rotate, thereby opening the valve 43. As the valve 43 slowly opens, the vacuum pump 51 will gradually perform vacuum treatment on the detection box 41. At the same time, the sealing performance of the valve 43 can be gradually tested by the vacuum pump 51. The vacuum treatment of the detection box 41 can remove impurities on the surface of the valve 43 before testing, thereby avoiding the presence of impurities that affect the adhesion of photosensitive aerosol particles to defects in the valve 43 in the later stage, thereby improving the accuracy of the later defect detection of the valve 43.

[0063] Step 2: After the vacuum pump 51 completes the vacuum treatment of the inside of the detection box 41, the motor 5 is also turned off, and the boost mechanism 2 is started at this time. When the boost mechanism 2 is started, the outside air is absorbed through the air intake curved pipe 22 at the air intake end. At the same time, the rotating disk 24 and the storage ball 25 arranged in the air intake curved pipe 22 will rotate under the action of the airflow, wherein the storage ball 25 stores photosensitive aerosol particles. As the storage ball 25 rotates, the storage ball 25 will cause the photosensitive aerosol particles stored therein to enter the rotating disk 24 due to the centrifugal force. The rotating disk 24 is made of porous material, so the rotating rotating disk 24 will also spray out the photosensitive aerosol particles entering therein, from And it is preliminarily mixed with the airflow sucked by the supercharger 21. At the same time, the mixed gas absorbed by the supercharger 21 will be transported to the hollow ball 31 of the airflow stirring mechanism 3, and the hollow ball 31 can store the transported mixed gas for a short time. Then, under the action of the air pressure of the supercharger 21, the mixed gas stored in the hollow ball 31 will enter the hollow ball 32, and the multi-diamond holes 33 in the hollow ball 32 can collide with the photosensitive aerosol particles in the mixed gas, so that the photosensitive aerosol particles in the agglomerated mixed gas can be decomposed. With the entry of the mixed gas, the mixed gas will drive the deflector 36 to rotate, thereby driving the rotating rod 34 to rotate. When the rotating rod 34 rotates, it will also drive the mixing ball 35 to rotate.

[0064] Among them, the deflector 36 can convert the force generated when the mixed gas enters the hollow ball 32 into the force of the rotation of the mixing ball 35, and the rotating mixing ball 35 can further refine the photosensitive aerosol particles using the mixing groove 351. At the same time, the airflow generated when the rotating mixing ball 35 rotates can also further mix the refined photosensitive aerosol particles with the air, so that the photosensitive aerosol particles can be evenly distributed in the air. At this time, the first electric valve 38 will also be opened. With the opening of the first electric valve 38, the gas sucked by the booster 21 will also enter the detection box 41 in the defect detection mechanism 4 through the first connecting pipe 37.

[0065] Step 3: When the mixed gas enters the detection box 41, it will first pass through the valve 43 (at this time, the valve 43 has been fully opened by the rotator 421) and the transfer tube 44 into the air flow diversion shell 45. The air flow diversion shell 45 can evenly transport the mixed gas to various positions inside the detection box 41, so that the valve 43 placed inside it can evenly contact the mixed gas.

[0066] Among them, a diverter spiral 410 is arranged in the airflow diverter shell 45, and the diverter spiral 410 can buffer the mixed gas entering the airflow diverter shell 45, and prevent the mixed gas from entering the airflow diverter shell 45 due to the strong pressure of the supercharger 21 and causing turbulence, so that the photosensitive aerosol particles in the mixed gas are re-solidified into blocks under the action of the turbulent gas, thereby affecting the attachment of the photosensitive aerosol particles to the defects of the valve 43, and the airflow diverter shell 45 transports the mixed gas to various positions inside the detection box 41 evenly through the gas diverter pipe 48, and the gas diverter pipe 48 disperses and sprays the mixed gas through the fan-shaped air outlet 481, thereby preventing the mixed gas sprayed by the gas diverter pipe 48 from gathering in large quantities in the detection box 41, and the reason why the photosensitive aerosol particles can attach to the defects of the valve 43 is that the defects of the valve 43 have certain roughness and irregularity, and these characteristics provide a reliable surface for the photosensitive aerosol particles. Compared with the smooth surface, the rough surface has more Microscopic bumps and gaps are more likely to capture photosensitive aerosol particles. Different depths and sizes of defects will also capture different numbers of photosensitive aerosol particles. Moreover, as the booster 21 continuously inputs gas into the detection box 41, the air pressure in the booster 21 will gradually increase. The barometer 472 can adjust the detection box 41 according to the type of valve 43 to help the photosensitive aerosol particles prevent the required air pressure at the defect of the valve 43. When the barometer 472 detects that the air pressure in the detection box 41 reaches the set air pressure, the barometer 472 will feed back the information to the booster 21, so that the booster 21 stops working. The purpose of increasing the air pressure in the detection box 41 is that as the air pressure in the detection box 41 increases, the density of the mixed gas molecules increases, which means that the collision frequency between the photosensitive aerosol particles and the gas molecules increases, thereby increasing the kinetic energy of the photosensitive aerosol particles, making them have greater kinetic energy in the gas flow, and more easily pass through the defects of the valve and adhere to the surface of the defects.

[0067] When the photosensitive aerosol particles are completely attached to the defect of the valve 43, the ultraviolet rod 49 starts to start. With the irradiation of the ultraviolet rod 49, the photosensitive aerosol particles attached to the defect of the valve 43 will show color. The photosensitive aerosol particles attached to defects of different depths and sizes are also different, resulting in different brightness of the color of photosensitive aerosol particles of different defects. Finally, according to the color brightness of the photosensitive aerosol particles, it can be judged whether the defect of the corresponding valve 43 meets the production standard. Finally, the air release valve 471 will open, so that the high-pressure detection box 41 will return to normal atmospheric pressure, and then the valve 43 will be taken out of the detection box 41.

[0068] A detection method for a valve casting production defect detection device, the detection method sprays mixed air containing photosensitive aerosol particles on the valve, and makes the photosensitive aerosol particles in the mixed air adhere to the valve defect through air pressure, and finally makes the photosensitive aerosol particles color through ultraviolet rays, so as to realize the detection of valve casting production defects, and specifically comprises the following steps:

[0069] Photosensitive aerosol particles are mixed with air: the suction force generated when the test box 41 is pressurized by the booster 21 drives the rotating disk 24 to rotate in the fixed rod 23, so that the storage ball 25 storing the photosensitive aerosol particles in the rotating disk 24 is subjected to the centrifugal force, and the photosensitive aerosol particles enter the rotating disk 24 from the storage ball 25. The rotating disk 24 is made of porous material, so when the photosensitive aerosol particles enter the rotating disk 24, the suction force of the booster 21 separates the photosensitive aerosol particles from the rotating disk 24 and the photosensitive aerosol particles are sucked into the booster 21 together with the air, thereby completing the preliminary mixing of the air and the photosensitive aerosol particles;

[0070] Refinement of photosensitive aerosol particles mixed in the air: The mixed gas of air and photosensitive aerosol particles is transported into the hollow ball 31 through the supercharger 21, so that the mixed gas stays in the hollow ball 31 for a short time. The air pressure generated by the supercharger 21 transporting the mixed gas causes the mixed gas to enter the hollow ball 32 through the rhombus holes 33 of the hollow ball 32, and the deflector 36 in the hollow ball 32 rotates under the action of the air pressure, thereby driving the mixing ball 35 to rotate. The mixing ball 35 can further refine the photosensitive aerosol particles in the mixed gas, making it easier to adhere to the defects of the valve 43.

[0071] Photosensitive aerosol particles are attached to the valve 43; the mixed gas in the booster 21 is continuously transported to the detection box 41 through the gas pipe 46, causing the air pressure inside the detection box 41 to increase continuously. As the air pressure increases, the density of the gas molecules also increases, causing the photosensitive aerosol particles in the mixed gas to adhere to the defects of the valve 43, and then the photosensitive aerosol particles are colored by the irradiation of the ultraviolet rod 49, and finally the defect is judged according to the colored area.

[0072] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements will not cause the essence of the corresponding technical solutions to deviate from the protection scope of the technical solutions of the embodiments of the present invention.

Claims

1. A valve casting production defect detection device, characterized in that: include: Base (1); A booster mechanism (2), the booster mechanism (2) comprising a booster (21) fixedly connected to the top of the base (1), the booster (21) having an air intake end away from the airflow stirring mechanism (3) fixedly connected to an air intake curved pipe (22), the air intake curved pipe (22) being provided with a rotating disk (24) and a storage ball (25) for spraying and storing photosensitive aerosol particles; An airflow stirring mechanism (3), the airflow stirring mechanism (3) comprising a hollow ball (31) arranged on the top of the base (1), a hollow ball (32) for guiding the mixed airflow being arranged inside the hollow ball (31), a rotating rod (34) being rotatably connected inside the hollow ball (32), and a mixing ball (35) and a flow guide (36) for stirring and pushing the mixed airflow being arranged inside the rotating rod (34); A defect detection mechanism (4), the defect detection mechanism (4) comprising a detection box (41) fixedly connected to the top of a base (1), at least two electric telescopic rods (411) being horizontally fixedly connected to the inner walls on both sides of the detection box (41), one end of the electric telescopic rod (411) away from the inner wall of the detection box (41) being fixedly connected to a fixed cover (42), at least two rotators (421) being arranged in parallel inside the fixed cover (42), an airflow diversion shell (45) being fixedly connected to the inner wall of the detection box (41) located below the fixed cover (42), a diversion spiral (410) being rotatably connected inside the airflow diversion shell (45), and an elliptical protrusion (4101) being fixedly connected to the spiral surface of the diversion spiral (410); A plurality of air holes (221) are formed in a circular array at one end of the air intake curved pipe (22) away from the air intake end; a fixed rod (23) is fixedly connected to the end of the air intake curved pipe (22) away from the air intake end, and the fixed rod (23) is located at the center of the circular array of air holes (221); a rotating disk (24) is rotatably connected to the rod body of the fixed rod (23); a plurality of inclined paddles (241) are fixedly connected to the outer peripheral surface of the rotating disk (24) in a circular array; a plurality of storage balls (25) are fixedly connected to a circular array with the fixed rod (23) as the center on one side of the rotating disk (24) away from the air intake curved pipe (22); an air collecting hood (27) is fixedly connected to the end of the fixed rod (23) away from the air intake curved pipe (22); the rotating disk (24) and the storage balls (25) are both located in the air collecting hood (27); and an air outlet pipe (26) is fixedly connected to the air outlet end of the supercharger (21) close to the air flow stirring mechanism (3); The airflow stirring mechanism (3) comprises a hollow ball (31) fixedly connected to the top of the base (1); the airflow stirring mechanism (3) is arranged in parallel with the supercharging mechanism (2), and the supercharging mechanism (2) is located in front of the airflow stirring mechanism (3); a side of the hollow ball (31) close to the supercharger (21) is fixedly connected to an end of the air outlet pipe (26) away from the supercharger (21); a side of the hollow ball (31) close to the defect detection mechanism (4) is fixedly connected to a first connecting pipe (37); and the first connecting pipe The outer peripheral surface of (37) is fixedly connected to a first electric valve (38); a hollow ball (32) is arranged inside the hollow ball (31); both ends of the hollow ball (32) are fixedly connected to support rods (321); one end of the support rod (321) away from the hollow ball (32) is fixedly connected to the inside of the hollow ball (32); the hollow ball (32) is suspended in the hollow ball (32) by the support rod (321); and a plurality of rhombus holes (33) are opened on the spherical surface of the hollow ball (32) around the array; At least two mixing balls (35) are fixedly connected to the shaft of the rotating rod (34); a plurality of mixing grooves (351) are arranged in an array around the spherical surface of the mixing ball (35) along the horizontal direction of the rotating rod (34); and a plurality of flow guides (36) are fixedly connected in an array around two mixing balls (35) on the same radial line of the rotating rod (34); A valve (43) is provided inside the detection box (41), the valve (43) having a valve hand wheel and a valve flange, a clamping groove (422) is provided at the center of the outer peripheral surface of the rotator (421), the clamping groove (422) contacts the valve hand wheel, a snap cover (47) is movably snapped at the opening at the top of the detection box (41), the top of the snap cover (47) is fixedly connected to a relief valve (471) and a pressure gauge (472), the inlet and outlet ends of the valve flange are movably and airtightly connected to a transfer pipe (44), one end of the transfer pipe (44) away from the valve flange is fixedly connected to an air flow diversion shell (45), the input end of the valve flange is movably and airtightly connected to an air supply pipe (46), and one end of the air supply pipe (46) away from the input end of the valve flange is fixedly connected to a converging pipe (54); The two sides of the air flow splitting shell (45) are fixedly connected to an air splitting pipe (48), and the air splitting pipe (48) and the air flow splitting shell (45) are located at the same horizontal position. A plurality of groups of air outlet holes (481) are arranged in a horizontal array on the opposite side of the outer peripheral surface of the air splitting pipe (48), and each group of air outlet holes (481) has at least three air outlet holes distributed in a fan shape. The air splitting pipe (48) is fixedly connected to the inner walls of the detection box (41) on all sides, and at least two ultraviolet rods (49) are fixedly connected to the inner walls of both sides of the detection box (41).

2. A valve casting production defect detection device according to claim 1, characterized in that: A motor (5) is fixedly connected to the top of the base (1); a vacuum pump (51) is fixedly connected to the output end of the motor (5) close to the defect detection mechanism (4); a second connecting pipe (52) is fixedly connected to the side of the vacuum pump (51) away from the motor (5); a second electric valve (53) is fixedly connected to the outer peripheral surface of the second connecting pipe (52); the first connecting pipe (37) and the second connecting pipe (52) are both fixedly connected to a convergence pipe (54); the convergence pipe (54) is fixedly connected to one end of the gas transmission pipe (46) away from the input end of the valve flange; the motor (5) and the vacuum pump (51) are both arranged on the top of the base (1) relative to the booster (21).

3. A detection method for a valve casting production defect detection device, applied to the valve casting production defect detection device according to any one of claims 1-2, characterized in that: The detection method sprays mixed air containing photosensitive aerosol particles on the valve, and makes the photosensitive aerosol particles in the mixed air adhere to the valve defects through air pressure, and finally makes the photosensitive aerosol particles color through ultraviolet rays, so as to detect the production defects of valve castings. Specifically, the following steps are included: Mixing of photosensitive aerosol particles with air: The suction force generated when the test box (41) is pressurized by the booster (21) drives the rotating disk (24) to rotate in the fixed rod (23), so that the storage ball (25) storing the photosensitive aerosol particles in the rotating disk (24) is subjected to the centrifugal force, and the photosensitive aerosol particles enter the rotating disk (24) from the storage ball (25). The rotating disk (24) is made of a porous material, so when the photosensitive aerosol particles enter the rotating disk (24), the photosensitive aerosol particles are separated from the rotating disk (24) under the action of the suction force of the booster (21) and are sucked into the booster (21) together with the air, thereby completing the preliminary mixing of the air and the photosensitive aerosol particles; Refining of photosensitive aerosol particles mixed in the air: The mixed gas of air and photosensitive aerosol particles is transported into the hollow ball (31) through the supercharger (21), so that the mixed gas stays in the hollow ball (31) for a short time. The air pressure generated by the supercharger (21) transporting the mixed gas causes the mixed gas to enter the hollow ball (32) through the rhombus holes (33) of the hollow ball (32), and the guide (36) in the hollow ball (32) rotates under the action of the air pressure, thereby driving the mixing ball (35) to rotate. The mixing ball (35) can further refine the photosensitive aerosol particles in the mixed gas, making it easier for them to adhere to the valve defect. Photosensitive aerosol particles are attached to the valve; the mixed gas in the booster (21) is continuously delivered to the detection box (41) through the gas delivery pipe (46), thereby causing the gas pressure inside the detection box (41) to continuously increase. As the gas pressure increases, the density of the gas molecules also increases, causing the photosensitive aerosol particles in the mixed gas to attach to the valve defect, and then the photosensitive aerosol particles are colored by the irradiation of the ultraviolet rod (49), and finally the defect is judged based on the colored area.

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