Tempering process of diaphragm for metal diaphragm valve

Abstract

The tempering technology comprises the following steps of preparation before the technology, diaphragm tempering, discharging and inspection, tempering equipment comprises a tempering furnace body, a rotary clamping mechanism is arranged on the inner side of the tempering furnace body and comprises a rotary assembly and a clamping assembly, the rotary assembly comprises a first supporting plate, and the clamping assembly comprises a second supporting plate; a plurality of limiting discs are fixedly installed on the first supporting plate in a circumferential array mode, a driving disc is rotationally connected to the bottoms of the limiting discs, a plurality of hanging bases are arranged between the limiting discs and the driving disc in a circumferential array mode at equal intervals in a rolling mode, hanging columns are fixedly connected to the bottoms of the hanging bases, and a plurality of sets of hanging plates are arranged on the hanging columns in a circumferential array mode; according to the design, by rotating the clamping mechanism, it is guaranteed that intervals exist between the diaphragms, the position of the clamping mechanism in the tempering furnace body can be adjusted to a great extent, a static thermal boundary layer is broken through, the diaphragms can be evenly heated and cooled, and the defect that residual stress is not evenly distributed is overcome.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of diaphragm valve production, and particularly relates to a tempering process for a diaphragm of a metal diaphragm valve. BACKGROUND

[0002] The diaphragm valve is a special shutoff valve using a flexible diaphragm as an opening and closing and sealing element. The core structure is to divide the valve body cavity into two independent parts, and the elastic diaphragm (diaphragm) is used as an intermediate barrier. When the actuator moves downward, the central part of the diaphragm is directly pressed, so that the elastic deformation is generated and the diaphragm is tightly attached to the weir flow channel at the bottom of the valve body, so that the valve is tightly closed; when the diaphragm is lifted, the diaphragm restores to the original state by relying on its own elasticity, and the flow channel is opened.

[0003] The traditional tempering process for the diaphragm of the metal diaphragm valve has obvious defects in the uniformity of heating and cooling. The diaphragms are stacked in a stacking manner, the air does not circulate between the two, and the diaphragms are fixed in position in the furnace, so that a significant temperature gradient is generated between the edge and the center of the diaphragm, which easily causes local uneven heating, uncontrollable cooling rate, and thus harmful residual stress concentration is formed in the diaphragm, which directly damages the fatigue life and dimensional stability of the diaphragm. Therefore, in order to solve the above problems, a tempering process for the diaphragm of a metal diaphragm valve is provided. SUMMARY

[0004] The purpose of the present application is to solve the problems existing in the prior art, and to provide a tempering process for the diaphragm of a metal diaphragm valve.

[0005] In order to achieve the above purpose, the technical scheme adopted by the present application is as follows:

[0006] A tempering process for the diaphragm of a metal diaphragm valve, comprising the following steps:

[0007] S1, process preparation: check the appearance of the diaphragm after stamping and forming, and clean the diaphragm thoroughly before tempering;

[0008] S2, diaphragm tempering: load the diaphragm into the tempering equipment, the rotating clamping mechanism provided in the tempering equipment can periodically move the diaphragm close to the heating source to achieve uniform heating, then the interior of the tempering equipment is vacuumized or inert gas is filled, heated to a certain temperature, and then cooled in a certain way after a certain period of time;

[0009] S3, furnace discharge and inspection: in a dry environment, randomly sample, detect the appearance, size and performance, and record the detection data in the book.

[0010] The tempering equipment comprises a tempering furnace body, the inner side of the tempering furnace body is provided with a rotating clamping mechanism, which comprises a rotating assembly and a clamping assembly;

[0011] The rotating assembly comprises a first support plate, which is rotationally arranged at the bottom of the inside of the annealing furnace body, a plurality of limiting discs are fixedly arranged on the first support plate in a circumferential array, a driving disc is rotationally connected to the bottom of the limiting disc, a plurality of suspension seats are arranged in a circumferential array and equidistantly between the limiting disc and the driving disc and are arranged to roll, and the size of the inscribed circle between the plurality of suspension seats is adjustable.

[0012] A suspension column is fixedly connected to the bottom of the suspension seat, a plurality of groups of suspension plates are arranged on the suspension column in a circumferential array, the lengths of the plurality of suspension plates in each group are distributed in an arithmetic progression, and at least one clamping assembly is arranged at the bottom of the suspension plate.

[0013] The above technical solution further comprises:

[0014] A circulating cavity is arranged at the bottom of the annealing furnace body, a plurality of circulating pipes are arranged at the outside of the annealing furnace body in an equidistant manner and are in communication with the circulating cavity, an exhaust pipe is symmetrically and communicatively arranged at the outside of the circulating cavity, a sealing furnace door is arranged on the annealing furnace body, a circulating motor is arranged at the bottom of the outside of the circulating cavity, a fan blade is drivingly connected to the output end of the circulating motor extending into the inside of the circulating cavity, and a plurality of guide plates are arranged on the inside wall of the annealing furnace body in a circumferential array and are arranged on the sealing furnace door.

[0015] The rotating assembly further comprises a first motor fixedly arranged at the top of the annealing furnace body, a transmission main shaft is drivingly connected to the output end of the first motor and is arranged to rotate relative to the annealing furnace body, a second support plate is fixedly connected to the outside of the transmission main shaft, the first support plate is fixedly connected to the transmission main shaft, an inner support ring and an outer support ring are fixedly arranged at the top of the inside of the annealing furnace body, a second slip ring is fixedly arranged at the inside of the inner support ring, a first slip ring is fixedly arranged on the inside wall of the annealing furnace body, the first slip ring is arranged to slide relative to the first support plate, the second slip ring is arranged to slide relative to the second support plate, and a sealing plate is rotationally arranged on the top of the first slip ring.

[0016] A second rotating rod is rotationally arranged on the first support plate in a circumferential array, a reversing gear and a driving sprocket are fixedly arranged on the outside of the second rotating rod, an inner gear ring is fixedly arranged at the bottom of the inner support ring, and an outer gear ring is fixedly arranged at the bottom of the outer support ring, the outer gear ring and the inner gear ring are arranged to mesh with the reversing gear, a plurality of groups of gear teeth are arranged on the outer gear ring and the inner gear ring, and the gear teeth in each group are arranged in a ratio of 1:4 relative to the gear teeth of the reversing gear.

[0017] A first rotating rod is rotationally arranged in a circumferential array between the second support plate and the first support plate, a driven sprocket is fixedly arranged on the outside of the first rotating rod, a transmission chain is sleeved and connected between the driving sprocket and the driven sprocket, the first rotating rod is rotationally connected to the limiting disc and is fixedly connected to the driving disc.

[0018] A plurality of limiting arc grooves are arranged in a circumferential array on the limiting disc, a plurality of driving grooves are arranged in a circumferential array on the driving disc, a plurality of racks are fixedly installed on the bottom of the driving disc, the limiting arc grooves and the driving grooves jointly roll with the slide column, the outer side of the slide column is fixedly installed with the rotating gear engaged with the rack, the bottom of the rotating gear is fixedly connected with the hanging hook, the hanging seat is hung on the hanging hook, the two ends of the driving grooves and the limiting arc grooves are respectively on two concentric arcs with different diameters, and the included angle between the two ends of the limiting arc grooves is 90°.

[0019] The number of the hanging plates in each group is a plurality, the length of the bottom hanging plate is the shortest, the length of the top hanging plate is the longest, and the hanging plates in each group are distributed in a spiral ascending manner.

[0020] The clamping assembly comprises a connecting chain fixedly connected between the connecting chain and the hanging plate, a limiting plate fixedly connected to the bottom of the connecting chain, a limiting slide rod fixedly connected to the inner side of the limiting plate, and a clamping plate slidably arranged on the limiting slide rod.

[0021] The opposite surfaces of the clamping plate and the limiting plate are fixedly connected with expansion blocks, the limiting plate is threadedly connected with a clamping bolt, and the end of the clamping bolt is rotatably connected with the clamping plate.

[0022] The present application has the following advantages:

[0023] 1. In the present application, the rotating clamping mechanism ensures that there is a gap between the diaphragms, the position of the diaphragms in the tempering furnace body can be adjusted to a great extent, the static thermal boundary layer is broken, and each diaphragm can be uniformly and alternately exposed to the tempering furnace body, thereby eliminating the defect of uneven distribution of residual stress.

[0024] 2. In the present application, the arc gathering and diffusion movement of the hanging hook and the spiral arithmetic distribution of the multiple groups of hanging plates are beneficial to the air flow between the diaphragms, and also enable all diaphragms to alternately approach the heating source in a dynamic cycle, thereby ensuring that the performance of all workpieces in a single batch is uniform, and meeting the needs of large-scale and high-reliability industrial production. BRIEF DESCRIPTION OF DRAWINGS

[0025] Figure 1 It is an overall top view structural schematic diagram of a tempering process for diaphragms of a metal diaphragm valve;

[0026] Figure 2 It is an overall bottom view structural schematic diagram in the present application;

[0027] Figure 3 It is an internal structure schematic diagram of the tempering furnace body in the present application;

[0028] Figure 4 Fig. 3 is a bottom view of the structure of the rotary clamping mechanism in the present application;

[0029] Figure 5 Fig. 4 is a top view of the structure of the rotary clamping mechanism in the present application;

[0030] Figure 6 Fig. 5 is a structure diagram of the rotary assembly in the present application;

[0031] Figure 7 Fig. 6 is an enlarged view of structure A in Fig. 5; Figure 4

[0032] Fig. 7 is an enlarged view of structure B in Fig. 5; Figure 8 Figure 5 Fig. 8 is an enlarged view of structure C in Fig. 5.

[0033] Figure 9 Figure 6 Fig. 9 is an enlarged view of structure D in Fig. 5.

[0034] In the figure: 1, annealing furnace body; 2, sealing plate; 10, first motor; 11, emptying pipe; 12, circulating pipe; 13, circulating motor; 130, fan blade; 14, sealing furnace door; 15, circulating cavity; 16, guide plate; 20, driving disc; 200, driving groove; 21, first sliding ring; 22, first rotating rod; 23, first support plate; 24, transmission main shaft; 25, suspension column; 26, suspension plate; 27, connecting chain; 28, limiting plate; 29, clamping bolt; 210, clamping plate; 211, expansion block; 212, limiting sliding rod; 213, second sliding ring; 214, inner support ring; 215, inner gear ring; 216, outer support ring; 217, outer gear ring; 218, rotary gear; 219, second support plate; 220, reversing gear; 2200, second rotating rod; 221, driving sprocket; 222, driven sprocket; 223, transmission chain; 224, limiting disc; 2240, limiting arc groove; 225, sliding column; 226, suspension hook; 227, suspension seat; 228, rack. DETAILED DESCRIPTION

[0035] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work fall within the scope of protection of the present application.

[0036] Embodiment one

[0037] As shown in Fig. 1, the present application provides a metal diaphragm valve membrane annealing process, Figures 1-9

[0038] ​​​The tempering device comprises a tempering furnace body 1, the inner side of the tempering furnace body 1 is provided with a rotary clamping mechanism, which comprises a rotating assembly and a clamping assembly;

[0039] The rotating assembly comprises a first support plate 23, which is rotationally arranged at the bottom of the inner side of the tempering furnace body 1, and a plurality of limiting discs 224 are fixedly installed on the first support plate 23 in a circumferential array, the bottom of each limiting disc 224 is rotationally connected with a driving disc 20, and a plurality of suspension seats 227 are rotationally arranged between the limiting discs 224 and the driving disc 20 in a circumferential array at equal intervals, and the size of the inscribed circle between the plurality of suspension seats 227 is adjustable;

[0040] The bottom of each suspension seat 227 is fixedly connected with a suspension column 25, and a plurality of groups of suspension plates 26 are arranged on the suspension column 25 in a circumferential array, the lengths of the suspension plates 26 in each group are distributed in an arithmetic progression, and at least one clamping assembly is arranged at the bottom of each suspension plate 26, and the number of the clamping assemblies is in a proportional relationship with the length difference of the suspension plates 26;

[0041] The design utilizes the clamping assembly to clamp the diaphragm, the clamping assembly as a whole presents an inverted conical design, which can help the air circulation in the tempering furnace body 1, since the heating wire is arranged on the inner wall of the tempering furnace body 1, in order to solve the problem that the diaphragms with different distances from the heating wire are unevenly heated in the initial heating stage of the traditional tempering furnace, the rotating assembly is arranged to make all the diaphragms uniformly close to the heating wire, and the heating of the diaphragms is balanced.

[0042] Embodiment Two

[0043] As shown in Figures 1-3 based on the basis of embodiment one, in this embodiment, a circulating cavity 15 is installed at the bottom of the tempering furnace body 1, a plurality of circulating pipes 12 are installed at the outer side of the tempering furnace body 1 at equal intervals and are in communication with the circulating cavity 15, the outer side of the circulating cavity 15 is symmetrically and communicatively installed with a plurality of exhaust pipes 11, a sealing furnace door 14 is arranged on the tempering furnace body 1, a circulating motor 13 is installed at the outer side of the bottom of the circulating cavity 15, the output end of the circulating motor 13 extending to the inner side of the circulating cavity 15 is drivingly connected with a fan blade 130, and a plurality of guide plates 16 are circumferentially installed on the inner wall of the tempering furnace body 1 and the sealing furnace door 14;

[0044] Further, when the tempering process is performed, first, the two exhaust pipes 11 are opened, and the external air extraction device is used to exhaust the air in the tempering furnace body 1 and the circulating cavity 15 through the exhaust pipes 11, then the corresponding valves are closed, the inert protective gas is filled at the two exhaust pipes 11, the corresponding valves are opened, and the oxygen-free environment is established;

[0045] Furthermore, during the tempering process, the circulating motor 13 needs to be started to drive the fan blades 130 to rotate at high speed, pumping the gas at the bottom of the circulating chamber 15 into the tempering furnace body 1. After the injected gas flows through the working area to exchange heat with the diaphragm, the gas returns to the circulating chamber 15 through the various circulating pipes 12 connected to it. The multiple guide plates 16 installed on the sealed furnace door 14 and the inner wall of the tempering furnace body 1 guide the gas flow in the furnace, making the turbulent gas flow uniformly and orderly through each suspended metal diaphragm workpiece.

[0046] Furthermore, during the cooling stage, the fan blades 130 are rotated at a constant speed. Cooler inert gas is introduced into one exhaust pipe 11 and discharged through the other exhaust pipe 11, cooling is carried out at a certain rate. In this way, local overheating or uneven cooling can be prevented, ensuring the high uniformity of the temperature field inside the entire tempering furnace body 1, thereby ensuring the consistency of all diaphragm tempering process parameters.

[0047] Example 3

[0048] like Figures 3-9 As shown, based on the above embodiments, in this embodiment, the rotating assembly further includes a first motor 10 fixedly installed on the top of the tempering furnace body 1. The output end of the first motor 10 is connected to a transmission main shaft 24 that rotates relative to the tempering furnace body 1. A second support plate 219 is fixedly connected to the outer side of the transmission main shaft 24. The first support plate 23 is fixedly connected to the transmission main shaft 24. An inner support ring 214 and an outer support ring 216 are fixedly connected to the top of the inner side of the tempering furnace body 1. A second slip ring 213 is fixedly connected to the inner side of the inner support ring 214. A first slip ring 21 is fixedly connected to the inner wall of the tempering furnace body 1. The first slip ring 21 slides relative to the first support plate 23, and the second slip ring 213 slides relative to the second support plate 219. A sealing plate 2 disposed on the top of the first slip ring 21 is rotatably connected to the inner wall of the tempering furnace body 1.

[0049] The first support plate 23 is rotatably connected to a second rotating rod 2200 in a circular array. The outer side of the second rotating rod 2200 is fixedly connected to a reversing gear 220 and a drive sprocket 221. The bottom of the inner support ring 214 is fixedly connected to an inner gear ring 215, and the bottom of the outer support ring 216 is fixedly connected to an outer gear ring 217. The outer gear ring 217 is separate from the inner gear ring 215 and meshes with the reversing gear 220. Both the outer gear ring 217 and the inner gear ring 215 are provided with several sets of teeth. The ratio of each set of teeth to the teeth of the reversing gear 220 is 1:4.

[0050] The first rotating rod 22 is rotationally connected between the second supporting plate 219 and the first supporting plate 23, the sealing plate 2 is rotationally connected with the second rotating rod 2200 and the first rotating rod 22, the outer side of the first rotating rod 22 is fixedly connected with a driven sprocket 222, a transmission chain 223 is sleeved and connected between a driving sprocket 221 and the driven sprocket 222, the first rotating rod 22 is rotationally connected with a limiting disc 224 and fixedly connected with the driving disc 20.

[0051] A plurality of limiting arc grooves 2240 are arranged in a circumferential array and penetrate the limiting disc 224, a plurality of driving grooves 200 are arranged in a circumferential array and penetrate the driving disc 20, a plurality of racks 228 are fixedly installed on the bottom of the driving disc 20 in a circumferential array, the limiting arc grooves 2240 and the driving grooves 200 jointly roll with a sliding column 225, the outer side of the sliding column 225 is fixedly installed with a rotating gear 218 engaged with the racks 228, the bottom of the rotating gear 218 is fixedly connected with a hanging hook 226, a hanging seat 227 is hung on the hanging hook 226, the two ends of the driving grooves 200 and the limiting arc grooves 2240 are respectively on two concentric arcs with different diameters, the two ends of the limiting arc grooves 2240 are at an angle of 90°;

[0052] Further, one end of the limiting arc groove 2240 close to the center of the limiting disc 224 is concentric with one end of one driving groove 200 close to the center of the driving disc 20, the other end of the limiting arc groove 2240 is concentric with one end of the other driving groove 200 away from the center of the driving disc 20; and the two driving grooves 200 are 90° out of phase.

[0053] The number of each group of hanging plates 26 is multiple, the length of the bottom hanging plate 26 is the shortest, and the length of the top hanging plate 26 is the longest, each group of hanging plates 26 is distributed in a spiral ascending manner, the hanging plates 26 are provided in four groups, the spiral line of each group of hanging plates 26 is provided as one turn, and the overlapping between the hanging plates 26 is reduced;

[0054] Further, for example, if the length difference between each group of adjacent hanging plates 26 is A, if the number of each group of hanging plates 26 is N, the length of the shortest hanging plate 26 at the bottom is B, and one clamping assembly is arranged thereon, the length of the longest hanging plate 26 at the top is B+A*(N-1), and 1+k*(N-1) clamping assemblies are arranged thereon at equal intervals, where k is the difference in the number of clamping assemblies on adjacent two hanging plates 26.

[0055] Furthermore, during the tempering process of the diaphragm, the first motor 10 is started, driving the transmission main shaft 24 to rotate, which in turn drives the first support plate 23 and the second support plate 219 to revolve synchronously. When the first support plate 23 revolves, the second rotating rod 2200 mounted on it revolves accordingly. The reversing gear 220 fixed on the outside of the second rotating rod 2200 will periodically mesh alternately with the fixed outer gear ring 217 and inner gear ring 215 on the revolution trajectory. The outer gear ring 217 and the inner gear ring 215... The teeth on the gear ring 215 are arranged in an alternating pattern, and the tooth ratio of each set of teeth to the reversing gear 220 is designed to be 1:4. When the reversing gear 220 completes meshing with one set of teeth on the outer gear ring 217, it will drive the reversing gear 220 and the second rotating rod 2200 to rotate 90 degrees. When it completes meshing with one set of teeth on the inner gear ring 215, the second rotating rod 2200 completes the reverse reset. This process is repeated to achieve 90 degrees of forward and reverse rotation of the second rotating rod 2200.

[0056] Furthermore, the rotation of the second rotating rod 2200 is transmitted to the first rotating rod 22 through the chain drive system consisting of the driving sprocket 221, the transmission chain 223 and the driven sprocket 222. The rotation of the first rotating rod 22 drives the drive disk 20 fixedly connected to it to rotate synchronously. The rack 228 follows the drive disk 20 to generate circular motion synchronously. The rack 228 meshes with the rotating gear 218, and the rotating gear 218 is fixed to the sliding column 225. The sliding column 225 rolls in the limiting arc groove 2240 and the drive groove 200.

[0057] Furthermore, during the reciprocating rotation of the drive disc 20, the slide column 225 slides within the limiting arc groove 2240 with a fixed angle constraint under the driving action of the drive groove 200. At the same time, the rack 228 meshes with the rotating gear 218, so that the suspension hook 226 can rotate while sliding within the limiting arc groove 2240.

[0058] Furthermore, the arc-shaped rolling of the suspension hook 226 causes the diaphragm at its bottom to move synchronously, allowing the diaphragm that is far from the inner wall of the tempering furnace body 1 to move closer to it. At the same time, the spacing between each suspension hook 226 is adjusted, and the spacing between the suspension columns 25 is adjusted synchronously, which is conducive to air circulation and improves the uniformity of heating of the diaphragm.

[0059] Example 4

[0060] like Figure 7 As shown, based on the above embodiments, in this embodiment, the clamping assembly includes a connecting chain 27, which is fixedly connected to the suspension plate 26. A limiting plate 28 is fixedly connected to the bottom of the connecting chain 27, and a limiting slide rod 212 is fixedly connected to the inner side of the limiting plate 28. A clamping plate 210 is slidably disposed on the limiting slide rod 212.

[0061] The clamping plate 210 is fixedly connected with the expansion block 211 on the opposite surface of the limiting plate 28, the limiting plate 28 is threadedly connected with the clamping bolt 29, and the end of the clamping bolt 29 is rotationally connected with the clamping plate 210;

[0062] Further, when the suspension film piece is installed, the operator first rotates the clamping bolt 29, the clamping bolt 29 is threadedly connected with the limiting plate 28, therefore the clamping plate 210 stably slides along the limiting slide rod 212, so as to change the relative distance between the clamping plate 210 and the limiting plate 28, the edge of the metal film piece is placed between the opposite surfaces of the clamping plate 210 and the limiting plate 28, that is, between the two oppositely arranged expansion blocks 211, the clamping bolt 29 is continuously screwed, the two expansion blocks 211 are clamped together with the film piece edge, the expansion block 211 is usually made of high-temperature-resistant material, and the expansion coefficient is greater than that of the film piece, which can adapt to the slight deviation of the film piece thickness, and ensure firm and uniform clamping.

[0063] Further, the upper end of the connecting chain 27 is fixedly connected with the suspension plate 26, and the lower end is fixedly connected with the limiting plate 28, when the clamping assembly and the clamped film piece are driven by the first motor 10 to perform revolution, arc movement and rotation, the connecting chain 27 can adaptively adjust the posture, and ensure the stable clamping and safety of the film piece during the whole high-temperature tempering process.

[0064] Further, the suspension seat 227 is fixedly connected between the suspension column 25 and the suspension hook 226, the suspension seat 227 is suspended on the suspension hook 226, therefore after the film piece is installed externally, the suspension column 25 is hung on the suspension hook 226 by using hoisting equipment, and meanwhile the first motor 10 is used to drive the driving disc 20 to face the sealing furnace door 14, so as to facilitate the suspension.

[0065] Example five

[0066] A tempering process for a metal diaphragm valve film piece, comprising the following steps:

[0067] S1, process preparation: check the appearance of the film piece after stamping and forming, and clean the film piece thoroughly before tempering;

[0068] S2, film piece tempering: the film piece is loaded into the tempering equipment, the rotating clamping mechanism arranged in the tempering equipment can periodically move the film piece close to the heating source to achieve uniform heating, then the interior of the tempering equipment is vacuumized or inert gas is filled, heated to a certain temperature, kept for a period of time, and then cooled in a certain way;

[0069] S3, furnace discharge and inspection: in a dry environment, randomly sample, detect the appearance, size and performance, and record the detection data in the book.

[0070] While embodiments of the application have been shown and described, it is to be understood that the embodiments described are merely exemplary of the principles and application of the present application. Numerous modifications and adaptions can be effected without departing from the spirit and scope of the present application, which is not limited to the exact construction and arrangement described. It is intended, therefore, to cover all modifications and adaptions that fall within the scope of the claims and their equivalents.

Claims

1. A tempering process for a diaphragm in a metal diaphragm valve, characterized in that, Includes the following steps: S1. Pre-process preparation: Check the appearance of the diaphragm after stamping and ensure there are no defects. The diaphragm must be thoroughly cleaned before tempering. S2. Diaphragm tempering: The diaphragm is loaded into the tempering equipment. The rotating clamping mechanism in the tempering equipment can periodically bring the diaphragm close to the heating source to achieve uniform heating. Then, the tempering equipment is evacuated or filled with inert gas, heated to a certain temperature, held for a period of time, and then cooled in a certain way. S3. Unloading and Inspection: In a dry environment, random sampling is used to inspect the appearance, dimensions and performance, and the test data is recorded.

2. The tempering process for a diaphragm in a metal diaphragm valve according to claim 1, characterized in that, The tempering equipment includes a tempering furnace body, and a rotating clamping mechanism is provided on the inner side of the tempering furnace body, which includes a rotating component and a clamping component; The rotating assembly includes a first support plate, which is rotatably disposed at the bottom of the tempering furnace body. Multiple limiting discs are fixedly mounted on the first support plate in a circumferential array. A driving disc is rotatably connected to the bottom of the limiting disc. Multiple suspension seats are equidistantly arranged in a circumferential array between the limiting disc and the driving disc. The size of the inscribed circle between the multiple suspension seats is adjustable. The bottom of the suspension seat is fixedly connected to a suspension column, and several sets of suspension plates are arranged in a circumferential array on the suspension column. The lengths of the multiple suspension plates in each set are distributed in an arithmetic progression. At least one clamping component is provided at the bottom of each suspension plate, and the difference in the number of clamping components is proportional to the difference in the length of the suspension plates.

3. The tempering process for a diaphragm in a metal diaphragm valve according to claim 2, characterized in that, A circulation chamber is installed at the bottom of the tempering furnace body. Multiple circulation pipes communicating with the circulation chamber are installed at equal intervals on the outer side of the tempering furnace body. An exhaust pipe is symmetrically connected to the outer side of the circulation chamber. A sealed furnace door is provided on the tempering furnace body. A circulation motor is installed at the bottom of the outer side of the circulation chamber. The output end of the circulation motor extending to the inner side of the circulation chamber is connected to a fan blade. Multiple guide plates are installed in a circumferential array on the sealed furnace door and the inner wall of the tempering furnace body.

4. The tempering process for a diaphragm in a metal diaphragm valve according to claim 2, characterized in that, The rotating assembly also includes a first motor fixedly installed on the top of the tempering furnace body. The output end of the first motor is connected to a transmission shaft that rotates relative to the tempering furnace body. A second support plate is fixedly connected to the outer side of the transmission shaft. The first support plate is fixedly connected to the transmission shaft. An inner support ring and an outer support ring are fixedly connected to the top of the inner side of the tempering furnace body. A second slip ring is fixedly connected to the inner side of the inner support ring. A first slip ring is fixedly connected to the inner wall of the tempering furnace body. The first slip ring slides relative to the first support plate, and the second slip ring slides relative to the second support plate. A sealing plate disposed on the top of the first slip ring is rotatably connected to the inner wall of the tempering furnace body.

5. The tempering process for a diaphragm in a metal diaphragm valve according to claim 4, characterized in that, The first support plate is rotatably connected to a second rotating rod in a circumferential array. A reversing gear and a drive sprocket are fixedly connected to the outer side of the second rotating rod. An inner gear ring is fixedly connected to the bottom of the inner support ring, and an outer gear ring is fixedly connected to the bottom of the outer support ring. The outer gear ring and the inner gear ring are separate and mesh with the reversing gear. Several sets of teeth are provided on both the outer gear ring and the inner gear ring. The ratio of each set of teeth to the teeth of the reversing gear is 1:

4.

6. The tempering process for a diaphragm in a metal diaphragm valve according to claim 5, characterized in that, A first rotating rod is rotatably connected in a circumferential array between the second support plate and the first support plate. A driven sprocket is fixedly connected to the outer side of the first rotating rod. A transmission chain is sleeved and connected between the driving sprocket and the driven sprocket. The first rotating rod is rotatably connected to the limiting disc and fixedly connected to the driving disc.

7. The tempering process for a diaphragm in a metal diaphragm valve according to claim 6, characterized in that, The limiting disk has multiple limiting arc grooves running through its circumferential array, and the driving disk has multiple driving grooves running through its circumferential array. Multiple racks are fixedly installed on the bottom circumferential array of the driving disk. A sliding column rolls together with the limiting arc grooves and the driving grooves. A rotating gear that meshes with the racks is fixedly installed on the outside of the sliding column. A suspension hook is fixedly connected to the bottom of the rotating gear. The suspension seat is suspended on the suspension hook. The two ends of the driving groove and the limiting arc groove are respectively on two concentric arcs with different diameters. The included angle between the two ends of the limiting arc groove is 90°.

8. The tempering process for a diaphragm in a metal diaphragm valve according to claim 2, characterized in that, Each group of suspension plates consists of multiple plates, with the bottom plate being the shortest and the top plate being the longest. The suspension plates in each group are arranged in a spiral upward distribution.

9. The tempering process for a diaphragm in a metal diaphragm valve according to claim 2, characterized in that, The clamping assembly includes a connecting chain, which is fixedly connected to a suspension plate. A limiting plate is fixedly connected to the bottom of the connecting chain, and a limiting slide rod is fixedly connected to the inner side of the limiting plate. A clamping plate is slidably disposed on the limiting slide rod.

10. The tempering process for a diaphragm in a metal diaphragm valve according to claim 9, characterized in that, Expansion blocks are fixedly connected to the surfaces of the clamping plate and the limiting plate, and clamping bolts are threadedly connected to the limiting plate. The ends of the clamping bolts are rotatably connected to the clamping plate.

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