Surface coating device for metal diaphragm of sensor

Abstract

The invention discloses a sensor metal diaphragm surface layer coating device which comprises a supporting frame, an electroplating pool, a to-be-plated placing frame, a control cabinet, a liquid supply assembly, a nanometer bubble generator, a nanometer bubble stirring assembly, an air supply assembly, a wiring assembly, a positive electrode cylinder and a negative electrode electric clamp. And the bottom of the to-be-plated placing rack is fixedly mounted at the inner bottom of the electroplating tank. The nanometer bubbles enter the positive electrode cylinder, the electrified positive electrode cylinder, the shunting plate, the reducing cylinder and the shunting net plate release metal ions, the nanometer bubbles carry the metal ions to collide with the sensor metal diaphragm, and the metal ions are attached to the outer surface of the sensor metal diaphragm, so that the purpose of uniformly depositing a metal coating is achieved; the surface smoothness of the membrane is improved; the metal ion release and deposition efficiency is improved; the hot spot effect is avoided; the electroplating efficiency is improved;

Description

Technical Field

[0001] The invention relates to the technical field, and in particular to a sensor metal diaphragm surface coating device. Background Art

[0002] In the field of sensor manufacturing, the coating process of the metal diaphragm surface is crucial to ensure the performance of the sensor. The traditional electroplating immersion coating method is to insert the positive electrode into the electrolytic cell. Although this method can achieve the surface treatment of the metal diaphragm to a certain extent, it has many disadvantages, especially in terms of electroplating uniformity.

[0003] In the traditional electroplating immersion coating process, the metal ions of the positive electrode need to diffuse in the electrolytic cell to the surface of the workpiece to be plated. This diffusion process is not completed instantly, but depends on the migration of ions and convection in the solution. Due to the randomness and instability of these physical processes themselves, the time and path of metal ions reaching the surface of the workpiece are different. This not only makes it difficult to maintain a consistent metal deposition rate, but also causes the problem of uneven distribution of electroplating layer thickness. In actual operation, some areas may prematurely form a thicker coating due to high ion concentration, while other places may appear thinner due to insufficient ion supply. This thickness difference not only affects the consistency and reliability of the sensor, but may also cause local stress concentration, which in turn affects its long-term stability and service life.

[0004] The electrolyte used in electroplating immersion coating is usually in liquid state, which means it is easily affected by external factors such as temperature and stirring speed. For example, under different temperature conditions, the viscosity of the electrolyte will change, thus affecting the diffusion rate of ions; and during the stirring process, if the flow field distribution is unreasonable, it will also cause the coating in some parts to be thicker or thinner than other parts. In order to overcome these problems, operators often need to fine-tune the process parameters, but this undoubtedly increases the difficulty and cost of production, and even so, it is still difficult to completely avoid the phenomenon of uneven electroplating.

[0005] Another significant problem is the challenge faced by traditional electroplating methods when processing metal diaphragms with complex shapes. When the metal diaphragm has a non-planar structure or contains features such as grooves and holes, these special geometric shapes will further interfere with the normal diffusion path of ions. As a result, it is difficult to obtain sufficient metal ion deposition in those corners and gaps that are difficult to access, resulting in poor electroplating coverage. Therefore, how to provide a sensor metal diaphragm surface coating device is a problem that technical personnel in this field urgently need to solve. Summary of the invention

[0006] One object of the present invention is to provide a sensor metal diaphragm surface coating device. In the present invention, nanobubbles enter the positive electrode cylinder, and the energized positive electrode cylinder, diverter plate, tapered cylinder and diverter mesh plate release metal ions. The nanobubbles carry metal ions and collide with the sensor metal diaphragm. The metal ions adhere to the outer surface of the sensor metal diaphragm to achieve uniform deposition of metal coating, reduce nanobubble retention and diaphragm surface unevenness, improve diaphragm surface finish, improve metal ion release and deposition efficiency, avoid "hot spot" effect, improve electroplating efficiency and save materials, and improve the mechanical properties of the deposited layer; when electroplating copper, nickel or other metals, the uniform metal deposition layer can provide better mechanical properties, such as stronger tensile strength, hardness and wear resistance, the quality of the electroplating layer is improved, and the durability and reliability of the diaphragm are also enhanced.

[0007] The present invention releases and transports metal ions through the action of nanobubbles. When the nanobubbles are generated in a nanobubble generator and rise through a channel, they drive the metal ions in the electrolyte. Due to the movement of the nanobubbles, the metal ions can be evenly distributed on the surface of the metal diaphragm, which helps to improve the uniformity and efficiency of metal deposition. The fluidity of the electrolyte is increased. The nanobubbles enhance the fluidity of the electrolyte by generating a stirring effect, which helps to improve the dispersion and reaction rate of the metal ions in the electrolyte, thereby improving the current density distribution in the electroplating process and improving the quality of the plating layer. The continuous output of the nanobubbles can control the thickness of the electroplating layer.

[0008] The present invention takes advantage of the countercurrent stirring performed by the nanobubble stirring component in the nanobubble generating channel, thereby enhancing the contact efficiency between gas and liquid, improving the uniformity of nanobubbles, improving the stability of nanobubbles, increasing the number of nanobubbles generated, increasing the dissolved oxygen rate and gas dissolution efficiency, optimizing the fluid dynamics characteristics, and improving the overall efficiency and reaction rate.

[0009] A sensor metal diaphragm surface coating device according to an embodiment of the present invention comprises a support frame, an electroplating tank, a placement rack to be plated, a control cabinet, a liquid supply component, a nano bubble generator, a nano bubble stirring component, an air supply component, a wiring component, a positive electrode cylinder and a negative electrode clamp, wherein the electroplating tank is fixedly mounted on the top of the support frame, the bottom of the placement rack to be plated is fixedly mounted on the inner bottom of the electroplating tank, the rear end of the control cabinet is fixedly mounted on the support frame, the liquid supply component is fixedly mounted on the bottom of the electroplating tank, the bottom of the nano bubble generator is fixedly mounted on the liquid supply component, the top of the nano bubble generator passes through the bottom of the electroplating tank, the nano bubble stirring component is fixedly mounted on the nano bubble generator, the air supply component is fixedly mounted on the nano bubble generator, the wiring component is fixedly mounted on the control cabinet, the positive electrode cylinder is fixedly mounted inside the nano bubble generator, and the negative electrode clamp is fixedly mounted on the wiring component; The nano bubble generator is composed of a ceramic outer cylinder and a silicone rubber nano bubble core, and the silicone rubber nano bubble core is fixedly installed inside the ceramic outer cylinder; A nano bubble generation channel is provided in the middle of the silicon rubber nano bubble core, a gas connection pipe is fixedly provided on the outer wall of the ceramic outer cylinder, and a bubble diffusion core is fixedly provided on the inner top of the ceramic outer cylinder; The nano bubble stirring assembly comprises a rotating rod and a stirring blade, the rotating rod is rotatably mounted in the nano bubble generator, and the rotating rod is located at the nano bubble generating channel, the stirring blade is fixedly mounted on the rotating rod, the stirring blade has an elliptical cross section and is arranged in a curved shape as a whole, two rotating rods and two stirring blades are arranged, one rotating rod and one stirring blade form a group, and the two groups of rotating rods and stirring blades are symmetrically arranged; A shunt plate is fixedly provided on the inner wall of the positive electrode cylinder, a tapered cylinder is fixedly provided on the inner wall of the positive electrode cylinder, four tapered cylinders are provided, two of the four tapered cylinders form a group, and the two groups of tapered cylinders are symmetrically arranged, and a shunt mesh plate is fixedly provided on the inner wall of the four tapered cylinders, and a wiring rod is fixedly provided on the outer wall of the positive electrode cylinder, and the wiring rod extends out of the nano bubble generator at one end away from the positive electrode cylinder.

[0010] Furthermore, a display screen is fixedly arranged on the top of the control cabinet, a button group is fixedly arranged on the top of the control cabinet, a gas supply cabinet is fixedly arranged in the middle of the control cabinet, and a function cabinet is fixedly arranged on the bottom of the control cabinet; The outer walls of the gas supply cabinet and the functional cabinet are fixedly provided with hinges, the front ends of the gas supply cabinet and the functional cabinet are fixedly provided with cabinet door panels, one end of the cabinet door panel close to the hinge is fixedly installed on the hinge, and the outer walls of the cabinet door panels are fixedly provided with cabinet door handles.

[0011] Furthermore, the liquid supply assembly includes a cone, a sedimentation tank, a liquid extraction pipe, an electric water valve, a centrifugal pump and a liquid supply pipe rack, wherein the top of the cone is fixedly mounted on the bottom of the electroplating pool, the top of the sedimentation tank is fixedly mounted on the bottom of the cone, the sedimentation tank is located at the bottom of the electroplating pool, one end of the liquid extraction pipe is fixedly mounted on the end of the sedimentation tank away from the cone, the electric water valve is fixedly mounted on the liquid extraction pipe, the other end of the liquid extraction pipe is fixedly mounted on the centrifugal pump, one end of the liquid supply pipe rack is fixedly mounted on the centrifugal pump, and the other end of the liquid supply pipe rack is fixedly mounted on the bottom of the ceramic outer cylinder.

[0012] Furthermore, a sealing plate is fixedly provided at the front end of the sedimentation box, a blocking plate is fixedly provided inside the sedimentation box, a retention plate is fixedly provided inside the sedimentation box, an inclined plate is fixedly provided on the side of the retention plate facing the blocking plate, a retention groove is provided on the top of the inclined plate, and a filter plate is fixedly provided inside the sedimentation box.

[0013] Furthermore, an expansion cylinder is fixedly arranged on the top of the ceramic outer cylinder, a gradually contracting channel is opened at the lower position inside the silicone rubber nano bubble core, a gradually expanding channel is opened at the upper position inside the silicone rubber nano bubble core, and an air supply channel is opened on one side of the silicone rubber nano bubble core close to the air pipe.

[0014] Furthermore, the nano bubble stirring assembly includes a sealing cover, a stirring motor, a first bevel gear set and a transmission rod, wherein the sealing cover is fixedly mounted on the outer wall of the ceramic outer cylinder, the stirring motor is located in the sealing cover, the base of the stirring motor is fixedly mounted on the outer wall of the ceramic outer cylinder, the input end bevel gear of the first bevel gear set is fixedly mounted on the rotating shaft of the stirring motor, the output end bevel gear of the first bevel gear set is fixedly mounted on one end of the transmission rod, the other end of the transmission rod is rotatably inserted into the interior of the ceramic outer cylinder and the silicone rubber nano bubble core, and the end of the transmission rod extending into the silicone rubber nano bubble core is fixedly mounted on the rotating rod.

[0015] Furthermore, the nano bubble stirring assembly also includes a power groove, a second bevel gear set, a transfer rod, a fixed ring and a third bevel gear set, wherein the power groove is opened inside the silicone rubber nano bubble core, the input end bevel gear of the second bevel gear set is fixedly mounted on the rotating rod, the output end bevel gear of the second bevel gear set is fixedly mounted on one end of the transfer rod, the fixed ring is fixedly mounted in the power groove, the middle position of the transfer rod is rotatably mounted on the fixed ring, the input end bevel gear of the third bevel gear set is fixedly mounted on the other end of the transfer rod, and the output end bevel gear of the third bevel gear set is fixedly mounted on the rotating rod.

[0016] Furthermore, the air supply assembly includes an air supply pump, an air extraction pipe, an air filter cartridge, and an air outlet pipe, wherein the pump seat of the air supply pump is fixedly mounted on the inner bottom of the air supply cabinet, one end of the air extraction pipe is fixedly mounted on the air supply pump, the other end of the air extraction pipe is fixedly mounted on one end of the air filter cartridge, the other end of the air filter cartridge extends out of the air supply cabinet, one end of the air outlet pipe is fixedly mounted on the air supply pump, the other end of the air outlet pipe extends out of the air supply cabinet, and one end of the air outlet pipe extending out of the air supply cabinet is fixedly mounted on the air connecting pipe.

[0017] Furthermore, the wiring assembly includes a first positive cable, a docking block and a second positive cable, wherein one end of the first positive cable is fixedly installed on the top of the control cabinet, one end of the docking block is fixedly installed on the other end of the first positive cable, the other end of the docking block is fixedly installed on one end of the second positive cable, and the other end of the second positive cable is fixedly installed on the wiring rod.

[0018] Furthermore, the wiring assembly also includes a negative cable, one end of the negative cable is fixedly mounted on the top of the control cabinet, and the other end of the negative cable is fixedly mounted on the negative electrode clamp.

[0019] The beneficial effects of the present invention are: The present invention allows nanobubbles to enter the positive electrode cylinder, and the energized positive electrode cylinder, the shunt plate, the tapered cylinder and the shunt mesh plate release metal ions. The nanobubbles carry the metal ions and collide with the metal diaphragm of the sensor. The metal ions adhere to the outer surface of the metal diaphragm of the sensor to achieve uniform deposition of the metal coating, reduce nanobubble retention and diaphragm surface unevenness, improve the surface finish of the diaphragm, improve the metal ion release and deposition efficiency, avoid the "hot spot" effect, improve the electroplating efficiency and save materials, and improve the mechanical properties of the deposited layer; when electroplating copper, nickel or other metals, the uniform metal deposited layer can provide better mechanical properties, such as stronger tensile strength, hardness and wear resistance, the quality of the electroplated layer is improved, and the durability and reliability of the diaphragm are also enhanced.

[0020] The present invention releases and transports metal ions through the action of nanobubbles. When the nanobubbles are generated in a nanobubble generator and rise through a channel, they drive the metal ions in the electrolyte. Due to the movement of the nanobubbles, the metal ions can be evenly distributed on the surface of the metal diaphragm, which helps to improve the uniformity and efficiency of metal deposition. The fluidity of the electrolyte is increased. The nanobubbles enhance the fluidity of the electrolyte by generating a stirring effect, which helps to improve the dispersion and reaction rate of the metal ions in the electrolyte, thereby improving the current density distribution in the electroplating process and improving the quality of the plating layer. The continuous output of the nanobubbles can control the thickness of the electroplating layer.

[0021] The present invention takes advantage of the countercurrent stirring performed by the nanobubble stirring component in the nanobubble generating channel, thereby enhancing the contact efficiency between gas and liquid, improving the uniformity of nanobubbles, improving the stability of nanobubbles, increasing the number of nanobubbles generated, increasing the dissolved oxygen rate and gas dissolution efficiency, optimizing the fluid dynamics characteristics, and improving the overall efficiency and reaction rate. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings: Figure 1 This is a schematic diagram of the overall structure of a sensor metal diaphragm surface coating device proposed by the present invention; Figure 2 A schematic diagram of the structure of a liquid supply pipe rack of a sensor metal diaphragm surface coating device proposed by the present invention; Figure 3This is a schematic structural diagram of an expansion cylinder of a sensor metal diaphragm surface coating device proposed by the present invention; Figure 4 A sensor metal diaphragm surface coating device proposed by the present invention Figure 3 A magnified image of point A; Figure 5 A cross-sectional view of a sedimentation box of a sensor metal diaphragm surface coating device proposed by the present invention; Figure 6 This is a schematic diagram of the structure of a silicone rubber nano bubble core of a sensor metal diaphragm surface coating device proposed by the present invention; Figure 7 A sensor metal diaphragm surface coating device proposed by the present invention Figure 6 The enlarged view of point B; Figure 8 A sensor metal diaphragm surface coating device proposed by the present invention Figure 6 Enlarged view of point C.

[0023] In the figure: 1. Support frame; 2. Electroplating tank; 3. Plating rack; 4. Control cabinet; 4.1. Display screen; 4.2. Button group; 4.3. Gas supply cabinet; 4.4. Function cabinet; 4.5. Hinge; 4.6. Cabinet door panel; 4.7. Cabinet door handle; 5. Liquid supply assembly; 5.1. Cone cylinder; 5.2. Sedimentation tank; 5.3. Liquid extraction pipe; 5.4. Electric water valve; 5.5. Centrifugal pump; 5.6. Liquid supply pipe rack; 5.7. Sealing plate; 5.8. Blocking plate; 5.9. Retention plate; 5.10. Oblique plate; 5.11. Retention groove; 5.12. Filter plate; 6. Nano bubble generator; 6.1. Ceramic outer cylinder; 6.2. Silicone rubber nano bubble core; 6.3. Nano bubble generation channel; 6.4. Gas pipe; 6.5. Bubble diffusion core; 6.6. Expansion cylinder; 6.7. Gradually shrinking channel channel; 6.8, gradually expanding channel; 6.9, air supply channel; 7, nano bubble stirring assembly; 7.1, rotating rod; 7.2, stirring blade; 7.3, sealing cover; 7.4, stirring motor; 7.5, first bevel gear set; 7.6, transmission rod; 7.7, power slot; 7.8, second bevel gear set; 7.9, transfer rod; 7.10, fixing ring; 7.11, third bevel gear set; 8, air supply assembly; 8.1, air supply pump; 8.2, air extraction pipe; 8.3, air filter cartridge; 8.4, air outlet pipe; 9, wiring assembly; 9.1, first positive cable; 9.2, docking block; 9.3, second positive cable; 9.4, negative cable; 10, positive cylinder; 10.1, diverter plate; 10.2, tapered cylinder; 10.3, diverter mesh plate; 10.4, wiring rod; 11, negative electrode clamp. DETAILED DESCRIPTION

[0024] The present invention will now be described in further detail with reference to the accompanying drawings. These drawings are simplified schematic diagrams, which only illustrate the basic structure of the present invention in a schematic manner, and therefore only show the components related to the present invention.

[0025] Please refer to Figures 1 to 8 The present invention provides a sensor metal diaphragm surface coating device, comprising a support frame 1, an electroplating pool 2, a rack to be plated 3, a control cabinet 4, a liquid supply component 5, a nano bubble generator 6, a nano bubble stirring component 7, an air supply component 8, a wiring component 9, a positive electrode cylinder 10 and a negative electrode clamp 11, wherein the electroplating pool 2 is fixedly mounted on the top of the support frame 1, the bottom of the rack to be plated 3 is fixedly mounted on the inner bottom of the electroplating pool 2, the rear end of the control cabinet 4 is fixedly mounted on the support frame 1, the liquid supply component 5 is fixedly mounted on the bottom of the electroplating pool 2, the bottom of the nano bubble generator 6 is fixedly mounted on the liquid supply component 5, the top of the nano bubble generator 6 passes through the bottom of the electroplating pool 2, and the nano bubble stirring component 7 is fixedly mounted on the nano bubble generator 6. The nanobubble generator 6 is provided with a gas supply assembly 8 fixedly mounted on the nanobubble generator 6, a wiring assembly 9 fixedly mounted on the control cabinet 4, a positive electrode cylinder 10 fixedly mounted inside the nanobubble generator 6, and a negative electrode clamp 11 fixedly mounted on the wiring assembly 9; the nanobubble generator 6 is composed of a ceramic outer cylinder 6.1 and a silicone rubber nanobubble core 6.2, and the silicone rubber nanobubble core 6.2 is fixedly mounted inside the ceramic outer cylinder 6.1; a nanobubble generating channel 6.3 is provided in the middle of the silicone rubber nanobubble core 6.2, a gas pipe 6.4 is fixedly mounted on the outer wall of the ceramic outer cylinder 6.1, a bubble diffusion core 6.5 is fixedly mounted on the inner top of the ceramic outer cylinder 6.1, and the silicone rubber nanobubble core 6.2 is silicone rubber, which is non-conductive.

[0026] A shunt plate 10.1 is fixedly provided on the inner wall of the positive electrode cylinder 10, a tapered cylinder 10.2 is fixedly provided on the inner wall of the positive electrode cylinder 10, four tapered cylinders 10.2 are provided, two tapered cylinders 10.2 form a group, and two groups of tapered cylinders 10.2 are symmetrically provided, a shunt mesh plate 10.3 is fixedly provided on the inner wall of the four tapered cylinders 10.2, a connection rod 10.4 is fixedly provided on the outer wall of the positive electrode cylinder 10, and nanobubbles are extended from one end of the connection rod 10.4 away from the positive electrode cylinder 10 Outside the generator 6, the positive electrode cylinder 10, the shunt plate 10.1, the shunt mesh plate 10.3 and the connecting rod 10.4 are all made of the same metal material. An expansion cylinder 6.6 is fixedly arranged on the top of the ceramic outer cylinder 6.1, a gradually contracting channel 6.7 is opened at the lower position inside the silicone rubber nano bubble core 6.2, a gradually expanding channel 6.8 is opened at the upper position inside the silicone rubber nano bubble core 6.2, and a gas supply channel 6.9 is opened on one side of the silicone rubber nano bubble core 6.2 near the gas pipe 6.4.

[0027] Specifically, a display screen 4.1 is fixedly provided on the top of the control cabinet 4, a button group 4.2 is fixedly provided on the top of the control cabinet 4, a gas supply cabinet 4.3 is fixedly provided on the middle of the control cabinet 4, and a function cabinet 4.4 is fixedly provided on the bottom of the control cabinet 4; hinges 4.5 are fixedly provided on the outer walls of the gas supply cabinet 4.3 and the function cabinet 4.4, cabinet door panels 4.6 are fixedly provided on the front ends of the gas supply cabinet 4.3 and the function cabinet 4.4, one end of the cabinet door panel 4.6 close to the hinge 4.5 is fixedly installed on the hinge 4.5, and a cabinet door handle 4.7 is fixedly provided on the outer wall of the cabinet door panel 4.6.

[0028] More specifically, the liquid supply assembly 5 includes a cone 5.1, a sedimentation tank 5.2, a liquid extraction pipe 5.3, an electric water valve 5.4, a centrifugal pump 5.5 and a liquid supply pipe rack 5.6, wherein the top of the cone 5.1 is fixedly mounted on the bottom of the electroplating tank 2, the top of the sedimentation tank 5.2 is fixedly mounted on the bottom of the cone 5.1, the sedimentation tank 5.2 is located at the bottom of the electroplating tank 2, one end of the liquid extraction pipe 5.3 is fixedly mounted on the end of the sedimentation tank 5.2 away from the cone 5.1, the electric water valve 5.4 is fixedly mounted on the liquid extraction pipe 5.3, and the other end of the liquid extraction pipe 5.3 is fixedly mounted on the centrifugal pump 5.6. .5, one end of the liquid supply pipe rack 5.6 is fixedly installed on the centrifugal pump 5.5, and the other end of the liquid supply pipe rack 5.6 is fixedly installed on the bottom of the ceramic outer cylinder 6.1; a sealing plate 5.7 is fixedly arranged at the front end of the sedimentation box 5.2, a blocking plate 5.8 is fixedly arranged inside the sedimentation box 5.2, a retaining plate 5.9 is fixedly arranged inside the sedimentation box 5.2, an inclined plate 5.10 is fixedly arranged on the side of the retaining plate 5.9 facing the blocking plate 5.8, a retaining groove 5.11 is opened on the top of the inclined plate 5.10, and a filter plate 5.12 is fixedly arranged inside the sedimentation box 5.2.

[0029] The nano bubble stirring assembly 7 comprises a rotating rod 7.1 and a stirring blade 7.2. The rotating rod 7.1 is rotatably mounted in the nano bubble generator 6, and the rotating rod 7.1 is located at the nano bubble generating channel 6.3. The stirring blade 7.2 is fixedly mounted on the rotating rod 7.1. The stirring blade 7.2 has an elliptical cross section and is arranged in a curved shape as a whole. There are two rotating rods 7.1 and stirring blades 7.2. One rotating rod 7.1 and one stirring blade 7.2 form a group. The two groups of rotating rods 7.1 and stirring blades 7.2 are symmetrically arranged. The nano bubble stirring assembly 7 comprises a sealing cover 7.3, a stirring motor 7.4, a first bevel gear set 7.5 and a transmission rod 7 .6, wherein the sealing cover 7.3 is fixedly mounted on the outer wall of the ceramic outer cylinder 6.1, the stirring motor 7.4 is located in the sealing cover 7.3, the base of the stirring motor 7.4 is fixedly mounted on the outer wall of the ceramic outer cylinder 6.1, the input end bevel gear of the first bevel gear set 7.5 is fixedly mounted on the rotating shaft of the stirring motor 7.4, the output end bevel gear of the first bevel gear set 7.5 is fixedly mounted on one end of a transmission rod 7.6, the other end of the transmission rod 7.6 is rotatably inserted into the interior of the ceramic outer cylinder 6.1 and the silicone rubber nano bubble core 6.2, and the end of the transmission rod 7.6 extending into the silicone rubber nano bubble core 6.2 is fixedly mounted on the rotating rod 7.1.

[0030] More specifically, the nano bubble stirring assembly 7 further comprises a power groove 7.7, a second bevel gear set 7.8, a transfer rod 7.9, a fixed ring 7.10 and a third bevel gear set 7.11, wherein the power groove 7.7 is arranged inside the silicone rubber nano bubble core 6.2, the input end bevel gear of the second bevel gear set 7.8 is fixedly mounted on the rotating rod 7.1, the output end bevel gear of the second bevel gear set 7.8 is fixedly mounted on one end of the transfer rod 7.9, the fixed ring 7.10 is fixedly mounted in the power groove 7.7, the middle position of the transfer rod 7.9 is rotatably mounted on the fixed ring 7.10, the input end bevel gear of the third bevel gear set 7.11 is fixedly mounted on the other end of the transfer rod 7.9, and the output end bevel gear of the third bevel gear set 7.11 is fixedly mounted on the rotating rod 7.1.

[0031] The air supply assembly 8 includes an air supply pump 8.1, an air extraction pipe 8.2, an air filter cartridge 8.3, and an air outlet pipe 8.4, wherein a pump seat of the air supply pump 8.1 is fixedly mounted on the inner bottom of the air supply cabinet 4.3, one end of the air extraction pipe 8.2 is fixedly mounted on the air supply pump 8.1, the other end of the air extraction pipe 8.2 is fixedly mounted on one end of the air filter cartridge 8.3, the other end of the air filter cartridge 8.3 extends out of the air supply cabinet 4.3, one end of the air outlet pipe 8.4 is fixedly mounted on the air supply pump 8.1, the other end of the air outlet pipe 8.4 extends out of the air supply cabinet 4.3, and one end of the air outlet pipe 8.4 extending out of the air supply cabinet 4.3 is fixedly mounted on the air connecting pipe 6.4.

[0032] More specifically, the wiring assembly 9 includes a first positive cable 9.1, a docking block 9.2 and a second positive cable 9.3, wherein one end of the first positive cable 9.1 is fixedly mounted on the top of the control cabinet 4, one end of the docking block 9.2 is fixedly mounted on the other end of the first positive cable 9.1, the other end of the docking block 9.2 is fixedly mounted on one end of the second positive cable 9.3, and the other end of the second positive cable 9.3 is fixedly mounted on the wiring rod 10.4. The wiring assembly 9 also includes a negative cable 9.4, one end of the negative cable 9.4 is fixedly mounted on the top of the control cabinet 4, and the other end of the negative cable 9.4 is fixedly mounted on the negative electrode clamp 11.

[0033] Furthermore, the sensor metal diaphragm to be plated is placed on the plated placement rack 3. The present invention adopts electroplating dip coating to increase the performance of the sensor metal diaphragm. The positive electrode cylinder 10 and the negative electrode clamp 11 are energized, and the negative electrode clamp 11 clamps the sensor metal diaphragm.

[0034] The centrifugal pump 5.5 is started, and the electric water valve 5.4 is opened. The centrifugal pump 5.5 extracts the electrolyte in the sedimentation tank 5.2 through the liquid extraction pipe 5.3. The electrolyte in the electroplating cell 2 enters the sedimentation tank 5.2 through the cone 5.1. The blocking plate 5.8 maintains the height of the liquid level. The electrolyte passes through the interception plate 5.9 and the oblique interception plate 5.10 to intercept the larger suspended particles in the electrolyte, and then is filtered by the filter plate 5.12. The filtered electrolyte is extracted through the liquid extraction pipe 5.3 of the centrifugal pump 5.5, transported to the liquid supply pipe rack 5.6, and supplied to the nano bubble generator 6.

[0035] The air supply pump 8.1 is started, and the air supply pump 8.1 draws air from the outside through the air extraction pipe 8.2 and the air filter cartridge 8.3, and supplies the air to the nano bubble generator 6 through the air outlet pipe 8.4 connected to the air connection pipe 6.4.

[0036] The high-speed flowing electrolyte enters the tapered channel 6.7, and then enters the nano bubble generating channel 6.3 from the tapered channel 6.7. The high-speed flowing air enters the air supply channel 6.9. The high-speed flowing electrolyte and the high-speed flowing air shear each other to generate a large number of nano bubbles. The stirring motor 7.4 is started. The rotation of the stirring motor 7.4 drives the rotation of the first bevel gear set 7.5. The rotation of the first bevel gear set 7.5 drives the rotation of the transmission rod 7.6. The rotation of the transmission rod 7.6 drives the rotation of the rotating rod 7.1 and the second bevel gear set 7.8. The rotation of the second bevel gear set 7.8 drives the rotation of the transfer rod 7.9. The rotation of the transfer rod 7.9 drives the rotation of the third bevel gear set 7.11. The rotation of the third bevel gear set 7.11 drives the rotation of another rotating rod 7.1. The rotation of the rotating rod 7.1 drives the rotation of the stirring blade 7.2. The rotation of the stirring blade 7.2 rotates countercurrently to improve the uniformity of the bubbles and enhance the contact efficiency between the gas and the liquid.

[0037] The nanobubbles enter the positive electrode cylinder 10, and the energized positive electrode cylinder 10, the shunt plate 10.1, the tapered cylinder 10.2 and the shunt mesh plate 10.3 release metal ions. The nanobubbles carry the metal ions released by the positive electrode cylinder 10, the shunt plate 10.1, the tapered cylinder 10.2 and the shunt mesh plate 10.3 and are ejected from the gradually expanding channel 6.8 and the bubble diffusion core 6.5. The nanobubbles carry the metal ions and collide with the metal diaphragm of the sensor. The metal ions adhere to the outer surface of the metal diaphragm of the sensor, thereby increasing the deposition rate of the metal diaphragm of the sensor, improving the uniformity of the coating and enhancing the adhesion of the coating.

[0038] The advantages of the nano bubble stirring component 7 performing countercurrent stirring in the nano bubble generating channel 6.3 are as follows: 1. Enhance the contact efficiency between gas and liquid The countercurrent rotating stirring rack continuously disturbs the liquid, thereby greatly increasing the contact area between the gas and the liquid; the effective contact between the liquid and the gas is the key to the generation of nanobubbles, and the stirring rack improves the efficiency of the generation of nanobubbles by causing the gas to be more evenly distributed in the liquid.

[0039] 2. Improve the uniformity of nanobubbles The countercurrent rotating stirring rack can effectively disperse the gas into more uniform small bubbles and avoid the aggregation of nanobubbles; smaller and evenly distributed bubbles are more likely to reach the nanoscale, enhancing the stability of the system and the durability of nanobubbles; the uniformity of nanobubbles is crucial to improving the efficiency of gas dissolution and improving overall performance.

[0040] 3. Improve the stability of nanobubbles Nanobubbles are very small and have strong surface tension, making them easy to aggregate or break. The countercurrent stirring rack can provide additional mechanical disturbance during the formation of nanobubbles, help maintain the stability of nanobubbles, and reduce the risk of nanobubble aggregation or rapid disappearance. The stirring rack can provide a continuous disturbance force to extend the life cycle of nanobubbles.

[0041] 4. Increase the number of nanobubbles produced The countercurrent stirring rack allows the gas to be further sheared and distributed more evenly in the liquid, thereby promoting the generation of more nanobubbles; the liquid will form a complex flow state during the stirring process, further promoting the refinement and generation of nanobubbles.

[0042] 5. Improve dissolved oxygen rate and gas dissolution efficiency Nanobubbles have a large specific surface area and a long suspension time, which helps to dissolve the gas efficiently. The countercurrent stirring rack can effectively increase the generation and stability of nanobubbles, thereby increasing the proportion of gas dissolved in the liquid, especially in water treatment, sewage treatment, aquaculture, medical and other applications, which is of great significance for increasing the dissolved oxygen rate.

[0043] 6. Optimize fluid dynamics The countercurrent motion of the stirring rack helps improve the fluid dynamics in the gas channel, avoids dead corners of liquid flow, and ensures uniform flow of liquid in the entire channel and uniform distribution of nanobubbles. The optimized flow of fluid helps improve the working efficiency of the equipment and reduce energy waste.

[0044] 7. Improve overall efficiency and reaction rate During chemical or biological reactions, the uniform distribution and stability of nanobubbles have an important influence on the reaction rate; the design of the countercurrent stirring rack helps to improve the gas-liquid contact efficiency during the reaction process, thereby accelerating the reaction rate and improving the overall efficiency of the equipment.

[0045] The nanobubble generator 6 is connected to the metal positive electrode cylinder 10, and the metal ions are released by the power supply and carried out by the nanobubbles. The functions of the nanobubbles are: 1. Release and transport of metal ions: When nanobubbles are generated in the nanobubble generator 6 and rise through the channel, they carry metal ions in the electrolyte; due to the movement of the nanobubbles, they can evenly distribute the metal ions on the surface of the metal diaphragm, which helps to improve the uniformity and efficiency of metal deposition.

[0046] 2. Increase the fluidity of the electrolyte: Nanobubbles enhance the fluidity of the electrolyte by producing a stirring effect, which helps to improve the dispersion and reaction rate of metal ions in the electrolyte, thereby improving the current density distribution during the electroplating process and improving the quality of the coating.

[0047] Benefits of Nanobubble Carrying Metal Ions Immersion Plating: 1. Uniform deposition of metal coating Nanobubbles promote uniform deposition: The rise of nanobubbles not only helps metal ions to be more evenly distributed on the sensor metal diaphragm surface, but also reduces "dendritic" deposition or other uneven deposition caused by local overcurrent density during the electroplating process.

[0048] Improved deposition efficiency: Nanobubbles drive metal ions to the surface of the object to be plated, making the electroplating process more efficient and reducing the possibility of uneven deposition and weak areas of the coating.

[0049] 2. Reduce nano bubble retention and membrane surface unevenness Increase the contact between nanobubbles and electrolyte: The generation of nanobubbles can promote the flow of electrolyte and avoid stagnation of metal ions in the electrolyte. Especially when depositing metal, it can reduce the local current instability caused by nanobubbles staying on the surface of the membrane and ensure uniform electroplating layer.

[0050] Prevent excessive current focus: During the electroplating process, excessively high surface current density will lead to uneven metal deposition. The introduction of nanobubbles helps maintain a more uniform current density during the electroplating process, thereby avoiding this undesirable situation.

[0051] 3. Improve the surface finish of the diaphragm The role of nanobubbles is similar to "stirring" the electrolyte, which helps to remove tiny bubbles or irregular particles generated during the deposition process and improve the smoothness and uniformity of the metal diaphragm surface; this is very important for sensor metal diaphragms that require fine surface finish.

[0052] 4. Improve the release and deposition efficiency of metal ions The bubbles in the electroplating cell accelerate the release and transfer of metal ions on the metal anode through their physical action, while ensuring that a higher concentration of metal ions is deposited on the surface of the object to be plated; this makes the electroplating process not only efficient, but also ensures that the metal coating has good adhesion.

[0053] 5. Avoid the “hotspot” effect During the electroplating process, if the current density is unevenly distributed, it often leads to excessive deposition in some areas, forming the so-called "hot spot" effect. By using bubbles to help disperse the metal ions, the occurrence of these problems is reduced, making the metal layer deposited on the metal film more uniform.

[0054] 6. Improve electroplating efficiency and save materials By delivering metal ions through the nanobubble generator 6, the electroplating process can more efficiently utilize the metal ions in the electrolyte, thereby reducing waste and lowering the time and resource costs required for electroplating; nanobubbles make it easier for the metal ions in the electroplating pool to reach the surface of the object to be plated, thereby improving the overall electroplating efficiency.

[0055] 7. Improve the mechanical properties of the deposited layer When electroplating copper, nickel or other metals, the uniform metal deposit can provide better mechanical properties, such as stronger tensile strength, hardness and wear resistance; with the help of nanobubbles, the quality of the electroplated layer is improved, and the durability and reliability of the diaphragm are also enhanced.

[0056] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A sensor metal diaphragm surface coating device, characterized in that: The invention comprises a support frame (1), an electroplating pool (2), a rack for placing the objects to be plated (3), a control cabinet (4), a liquid supply component (5), a nano bubble generator (6), a nano bubble stirring component (7), an air supply component (8), a wiring component (9), a positive electrode cylinder (10) and a negative electrode clamp (11), wherein the electroplating pool (2) is fixedly mounted on the top of the support frame (1), the bottom of the rack for placing the objects to be plated (3) is fixedly mounted on the inner bottom of the electroplating pool (2), the rear end of the control cabinet (4) is fixedly mounted on the support frame (1), and the liquid supply component (5) is fixedly mounted on the inner bottom of the electroplating pool (1). (2), the bottom of the nanobubble generator (6) is fixedly mounted on the liquid supply assembly (5), the top of the nanobubble generator (6) passes through the bottom of the electroplating tank (2), the nanobubble stirring assembly (7) is fixedly mounted on the nanobubble generator (6), the gas supply assembly (8) is fixedly mounted on the nanobubble generator (6), the wiring assembly (9) is fixedly mounted on the control cabinet (4), the positive electrode cylinder (10) is fixedly mounted inside the nanobubble generator (6), and the negative electrode clamp (11) is fixedly mounted on the wiring assembly (9); The nano bubble generator (6) comprises a ceramic outer cylinder (6.1) and a silicone rubber nano bubble core (6.2), wherein the silicone rubber nano bubble core (6.2) is fixedly mounted inside the ceramic outer cylinder (6.1); A nano bubble generation channel (6.3) is provided in the middle of the silicone rubber nano bubble core (6.2), a gas connection pipe (6.4) is fixedly provided on the outer wall of the ceramic outer cylinder (6.1), and a bubble diffusion core (6.5) is fixedly provided on the inner top of the ceramic outer cylinder (6.1); The nano bubble stirring assembly (7) comprises a rotating rod (7.1) and a stirring blade (7.2); the rotating rod (7.1) is rotatably mounted in the nano bubble generator (6), and the rotating rod (7.1) is located at the nano bubble generating channel (6.3); the stirring blade (7.2) is fixedly mounted on the rotating rod (7.1); the stirring blade (7.2) has an elliptical cross section and is arranged in a curved shape as a whole; two rotating rods (7.1) and two stirring blades (7.2) are each provided; one rotating rod (7.1) and one stirring blade (7.2) form a group; and the two groups of rotating rods (7.1) and stirring blades (7.2) are symmetrically arranged; A flow divider plate (10.1) is fixedly provided on the inner wall of the positive electrode cylinder (10), a tapered cylinder (10.2) is fixedly provided on the inner wall of the positive electrode cylinder (10), four tapered cylinders (10.2) are provided, two of the four tapered cylinders (10.2) form a group, two groups of tapered cylinders (10.2) are symmetrically arranged, a flow divider mesh plate (10.3) is fixedly provided on the inner wall of the four tapered cylinders (10.2), a connecting rod (10.4) is fixedly provided on the outer wall of the positive electrode cylinder (10), and the connecting rod (10.4) extends out of the nano bubble generator (6) at one end away from the positive electrode cylinder (10).

2. A sensor metal diaphragm surface coating device according to claim 1, characterized in that: A display screen (4.1) is fixedly arranged on the top of the control cabinet (4), a button group (4.2) is fixedly arranged on the top of the control cabinet (4), a gas supply cabinet (4.3) is fixedly arranged in the middle of the control cabinet (4), and a function cabinet (4.4) is fixedly arranged on the bottom of the control cabinet (4); The outer walls of the gas supply cabinet (4.3) and the functional cabinet (4.4) are both fixedly provided with hinges (4.5); the front ends of the gas supply cabinet (4.3) and the functional cabinet (4.4) are both fixedly provided with cabinet door panels (4.6); one end of the cabinet door panel (4.6) close to the hinge (4.5) is fixedly mounted on the hinge (4.5); and the outer wall of the cabinet door panel (4.6) is fixedly provided with a cabinet door handle (4.7).

3. A sensor metal diaphragm surface coating device according to claim 1, characterized in that: The liquid supply assembly (5) comprises a cone (5.1), a sedimentation tank (5.2), a liquid extraction pipe (5.3), an electric water valve (5.4), a centrifugal pump (5.5) and a liquid supply pipe rack (5.6), wherein the top of the cone (5.1) is fixedly mounted on the bottom of the electroplating tank (2), the top of the sedimentation tank (5.2) is fixedly mounted on the bottom of the cone (5.1), the sedimentation tank (5.2) is located at the bottom of the electroplating tank (2), one end of the liquid extraction pipe (5.3) is fixedly mounted on the end of the sedimentation tank (5.2) away from the cone (5.1), the electric water valve (5.4) is fixedly mounted on the liquid extraction pipe (5.3), the other end of the liquid extraction pipe (5.3) is fixedly mounted on the centrifugal pump (5.5), one end of the liquid supply pipe rack (5.6) is fixedly mounted on the centrifugal pump (5.5), and the other end of the liquid supply pipe rack (5.6) is fixedly mounted on the bottom of the ceramic outer cylinder (6.1).

4. A sensor metal diaphragm surface coating device according to claim 3, characterized in that: A sealing plate (5.7) is fixedly provided at the front end of the sedimentation box (5.2), a blocking plate (5.8) is fixedly provided inside the sedimentation box (5.2), a retaining plate (5.9) is fixedly provided inside the sedimentation box (5.2), an inclined plate (5.10) is fixedly provided on the side of the retaining plate (5.9) facing the blocking plate (5.8), a retaining groove (5.11) is provided on the top of the inclined plate (5.10), and a filter plate (5.12) is fixedly provided inside the sedimentation box (5.2).

5. A sensor metal diaphragm surface coating device according to claim 1, characterized in that: An expansion cylinder (6.6) is fixedly arranged on the top of the ceramic outer cylinder (6.1), a gradually contracting channel (6.7) is provided at a lower position inside the silicone rubber nano bubble core (6.2), a gradually expanding channel (6.8) is provided at an upper position inside the silicone rubber nano bubble core (6.2), and an air supply channel (6.9) is provided on a side of the silicone rubber nano bubble core (6.2) close to the air connecting pipe (6.4).

6. A sensor metal diaphragm surface coating device according to claim 1, characterized in that: The nano bubble stirring assembly (7) comprises a sealing cover (7.3), a stirring motor (7.4), a first bevel gear set (7.5) and a transmission rod (7.6), wherein the sealing cover (7.3) is fixedly mounted on the outer wall of the ceramic outer cylinder (6.1), the stirring motor (7.4) is located inside the sealing cover (7.3), the base of the stirring motor (7.4) is fixedly mounted on the outer wall of the ceramic outer cylinder (6.1), the input end bevel gear of the first bevel gear set (7.5) is fixedly mounted on the rotating shaft of the stirring motor (7.4), the output end bevel gear of the first bevel gear set (7.5) is fixedly mounted on one end of the transmission rod (7.6), the other end of the transmission rod (7.6) is rotatably inserted into the interior of the ceramic outer cylinder (6.1) and the silicone rubber nano bubble core (6.2), and the end of the transmission rod (7.6) extending into the silicone rubber nano bubble core (6.2) is fixedly mounted on the rotating rod (7.1).

7. A sensor metal diaphragm surface coating device according to claim 6, characterized in that: The nano bubble stirring assembly (7) further comprises a power groove (7.7), a second bevel gear set (7.8), a transfer rod (7.9), a fixed ring (7.10) and a third bevel gear set (7.11), wherein the power groove (7.7) is opened inside the silicone rubber nano bubble core (6.2), the input end bevel gear of the second bevel gear set (7.8) is fixedly mounted on the rotating rod (7.1), the output end bevel gear of the second bevel gear set (7.8) is fixedly mounted on one end of the transfer rod (7.9), the fixed ring (7.10) is fixedly mounted in the power groove (7.7), the middle position of the transfer rod (7.9) is rotatably mounted on the fixed ring (7.10), the input end bevel gear of the third bevel gear set (7.11) is fixedly mounted on the other end of the transfer rod (7.9), and the output end bevel gear of the third bevel gear set (7.11) is fixedly mounted on the rotating rod (7.1).

8. A sensor metal diaphragm surface coating device according to claim 1, characterized in that: The air supply assembly (8) comprises an air supply pump (8.1), an air extraction pipe (8.2), an air filter cartridge (8.3), and an air outlet pipe (8.4), wherein a pump seat of the air supply pump (8.1) is fixedly mounted on the inner bottom of the air supply cabinet (4.3), one end of the air extraction pipe (8.2) is fixedly mounted on the air supply pump (8.1), the other end of the air extraction pipe (8.2) is fixedly mounted on one end of the air filter cartridge (8.3), the other end of the air filter cartridge (8.3) extends out of the air supply cabinet (4.3), one end of the air outlet pipe (8.4) is fixedly mounted on the air supply pump (8.1), the other end of the air outlet pipe (8.4) extends out of the air supply cabinet (4.3), and one end of the air outlet pipe (8.4) extending out of the air supply cabinet (4.3) is fixedly mounted on the air connecting pipe (6.4).

9. A sensor metal diaphragm surface coating device according to claim 1, characterized in that: The wiring assembly (9) comprises a first positive cable (9.1), a docking block (9.2) and a second positive cable (9.3), wherein one end of the first positive cable (9.1) is fixedly mounted on the top of the control cabinet (4), one end of the docking block (9.2) is fixedly mounted on the other end of the first positive cable (9.1), the other end of the docking block (9.2) is fixedly mounted on one end of the second positive cable (9.3), and the other end of the second positive cable (9.3) is fixedly mounted on a wiring rod (10.4).

10. A sensor metal diaphragm surface coating device according to claim 9, characterized in that: The wiring assembly (9) further comprises a negative electrode cable (9.4), one end of the negative electrode cable (9.4) being fixedly mounted on the top of the control cabinet (4), and the other end of the negative electrode cable (9.4) being fixedly mounted on the negative electrode clamp (11).

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