Electrochemical polishing device for valve

Abstract

The utility model relates to the field of valve production, in particular to an electrochemical polishing device of a valve, which comprises an electrolytic bath, a temperature controller, a cathode bar, an anode bar, a rectifier, a truss and a valve hanger, the top of the electrolytic bath is open, electrolyte is filled in the electrolytic bath, the truss is erected at the top of the electrolytic bath, and the valve hanger is mounted on the truss. The valve is hung on the valve hanger, the valve hanger comprises a motor, a planetary gear disc and a plurality of hanging shafts, the motor is mounted on the truss through a motor frame, the planetary gear disc is mounted on a driving shaft of the motor, the upper ends of the hanging shafts are mounted on planetary gears of the planetary gear disc, and the hanging shafts are vertically and downwards hung above the electrolytic cell. According to the device, the valves are hung, the uniformity and stability of a coating are ensured, the valves can be isolated and prevented from being in contact with one another, so that cross contamination is avoided, and each valve can be independently treated.

Description

Technical Field

[0001] The utility model relates to the field of valve production, in particular to an electrochemical polishing device for valves. Background Art

[0002] The principle of electrolytic polishing is an electrolytic process that uses the principle that the microscopic convex points on the metal surface will first dissolve at the anode in a specific electrolyte and under an appropriate current density. It is also called electropolishing. The characteristics of electrolytic polishing are: ① The polished surface will not produce a metamorphic layer, no additional stress, and the original stress layer can be removed or reduced; ② It can process hard materials, soft materials, thin-walled, complex-shaped, and small parts and products that are difficult to polish mechanically; ③ The polishing time is short, and multiple parts can be polished at the same time, with high production efficiency; ④ The surface roughness that can be achieved by electrolytic polishing is related to the original surface roughness, and can generally be improved by two levels.

[0003] Conditions and equipment required for electrochemical polishing:

[0004] (1) Power supply: two-phase 220V or three-phase 380V;

[0005] (2) Rectifier: Electrolytic polishing does not have strict requirements on the power waveform, so a thyristor rectifier or a high-frequency rectifier can be used. Rectifier no-load voltage: 0-20v, load voltage (working voltage): 8-10v;

[0006] (3) The electrolytic cell and supporting facilities (anode rods) can be made of welded polyvinyl chloride hard plates. Three electrode rods are installed on the cell, with a movable anode rod in the middle, connected to the anode (or positive pole) of the power supply, and cathode rods on both sides, connected to the cathode (negative pole) of the power supply;

[0007] (4) Heating facilities and cooling equipment: ① For heating, quartz heating tubes and titanium heating tubes can be used; ② For cooling, coils can be used, and coils can be used for both heating and cooling;

[0008] (5) For fixtures, it is best to use titanium as a hanger, because titanium is more corrosion-resistant, has a long service life, and titanium ions have no effect on the bath liquid. It is recommended not to use copper hangers, because copper ions will deposit a copper layer with poor bonding strength on the stainless steel surface, affecting the polishing quality. The exposed copper parts can be baked into a film with polyvinyl chloride glue, and the insulating film can be scraped off at the contact point;

[0009] (6) Anode and cathode materials: The cathode and cathode rods should be made of copper rods or copper tubes. The length of the copper tube is the length of the electrolytic cell plus 20 cm. The cathode plate should be made of lead plate. The lead plate is fixed on the cathode rod. The length of the lead plate is the cell height plus 10 cm. The width of the lead plate is determined according to the cell length, generally 10 cm or 20 cm.

[0010] After the valve is cast, the surface is rough and needs to be polished to meet the production requirements. Whether it is a three-way or two-way valve, when polishing in the electrolyte, there is no suitable rack to set up the valve, which can easily lead to poor polishing effect on the local surface of the valve. Utility Model Content

[0011] In order to solve the above technical problems, the purpose of the utility model is to provide an electrochemical polishing device for valves, which isolates the valves from each other and immerses them in an electrolyte to ensure the polishing effect of the valve surface.

[0012] In order to achieve the above purpose, the technical solution of the utility model is as follows:

[0013] A valve electrochemical polishing device comprises an electrolytic cell, a temperature controller, a cathode rod, an anode rod and a rectifier. The rectifier connects the cathode rod and the anode rod, the cathode rod and the anode rod are respectively installed on two symmetrical sides of the electrolytic cell, and the temperature controller is installed at the bottom of the electrolytic cell.

[0014] It also includes a truss and a valve hanger. The top of the electrolytic cell is open, and the electrolytic cell is filled with electrolyte. The truss is erected on the top of the electrolytic cell, and the valve hanger is installed on the truss. The valves are hung on the valve hanger in groups.

[0015] The valve hanger includes a motor, a planetary gear plate and a suspension shaft. The motor is installed on a truss through a motor frame. The drive shaft of the motor is vertically downward. The planetary gear plate is mounted on the drive shaft of the motor. The upper end of the suspension shaft is installed on the planetary gear of the planetary gear plate. There are multiple suspension shafts and they are suspended vertically downward above the electrolytic cell. The truss is used to carry the suspension shafts and immerse them in the electrolyte.

[0016] Further, the truss includes a transverse servo drive and a longitudinal servo drive installed on the transverse servo drive, and the valve hanger is installed on the longitudinal servo drive.

[0017] Furthermore, the planetary gear plate is mainly composed of a supporting outer plate, a planetary carrier, a sun gear and a plurality of planetary gears meshing around the sun gear. The planetary carrier, the sun gear and the planetary gears are assembled in the supporting outer plate, the driving shaft of the motor is connected to the sun gear, the planetary carrier is connected between the sun gear and the planetary gears, and a reinforcing connecting frame is provided between the supporting outer plate and the longitudinal servo drive.

[0018] Furthermore, the suspension shaft is divided into an inner shaft and an outer shaft, the outer shaft is detachably sleeved on the inner shaft, and the inner shaft is connected to the planetary gear.

[0019] Furthermore, the inner shaft is shorter than the outer shaft, and radial through holes are provided at the upper end of the outer shaft and the lower end of the inner shaft, and a bolt passes through the radial through hole to connect the inner shaft and the outer shaft.

[0020] Furthermore, the outer shaft is also covered with a detachable separation sleeve and a locking sleeve, the valve and the separation sleeve are covered on the outer shaft in an intersecting manner, and the locking sleeve is installed at the lower end of the valve at the rearmost end of the outer shaft.

[0021] Furthermore, the valve is a two-way adapter valve or a three-way adapter valve, and the separation sleeve is in the shape of a cross, with thin upper and lower ends and thick middle. When located between two adjacent valves, the upper and lower ends of the separation sleeve are inserted into the valve ports of the valves.

[0022] The beneficial effects of the above design compared with the prior art are: the coordinated use of the valve hanger and the truss can stably suspend the valve, and the planetary gear plate drives the suspension shaft to rotate the valve in the electrolyte at a certain speed, which not only effectively prevents the valve from moving or shaking during the electrophoresis process, but also drives the electrolyte to flow at a uniform speed, fully contacting the valve surface and dead corners, ensuring a uniform and stable coating, and preventing cross contamination. The valves on the suspension shaft are separated by separation sleeves, and the valves suspended between the planetary gears are also spaced apart from each other, which can isolate different valves and prevent contact with each other, thereby avoiding cross contamination and ensuring that each valve can be treated independently.

[0023] In addition, the use of the hanger fixture can organize the valves, speed up the efficiency of coloring and curing, reduce processing time, and improve production efficiency. The separation sleeve and the locking sleeve fix the valve, which helps to avoid direct contact with the valve surface, reduce potential abrasions and scratches caused by traditional fixing methods, and protect the valve surface from damage. It ensures the consistency of the position and posture of the valve during the electrophoresis treatment process, which is beneficial to the uniformity and aesthetics of the coating. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 This is a schematic diagram of the main structure of the utility model;

[0025] Figure 2 for Figure 1 Schematic diagram of the A-direction structure. DETAILED DESCRIPTION

[0026] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further described below in conjunction with specific embodiments.

[0027] like Figure 1 , Figure 2 The electrochemical polishing device for a valve shown includes an electrolytic cell, a temperature controller, a cathode rod, an anode rod and a rectifier. The rectifier is connected to the cathode rod and the anode rod. The cathode rod and the anode rod are respectively installed on the symmetrical sides of the electrolytic cell. The temperature controller is installed at the bottom of the electrolytic cell. This part is the existing technology of the electrolytic cell. The principle and process of electrophoresis are known technologies and will not be described in detail.

[0028] The main design point of the device is the fixture for clamping valves for electrochemical polishing, which mainly includes a truss 1 and a valve hanger 2. The top of the electrolytic cell 3 is open, and the electrolytic cell 3 is filled with electrolyte. The truss 1 is erected on the top of the electrolytic cell, and the valve hanger 2 is installed on the truss 1. The valves 4 are suspended on the valve hanger in groups. The truss 1 includes a transverse servo drive and a longitudinal servo drive installed on the transverse servo drive, and the valve hanger 2 is installed on the longitudinal servo drive. It is equivalent to the longitudinal servo drive moving longitudinally to take the valve on the valve hanger away from the electrolyte, and then the transverse servo drive moves horizontally to take the valve hanger away from the range of the electrolytic cell. At this time, it is convenient to remove the polished valves and hang a new batch of valves that need electrolysis at the same time. Two groups of longitudinal servo drives can also be installed on the transverse servo drive, and loading and electrolytic polishing can be carried out simultaneously.

[0029] The valve hanger 2 includes a motor 20, a planetary gear plate 21 and a suspension shaft 22. The motor 20 is installed on the truss through a motor frame. The drive shaft of the motor 20 is vertically downward. The planetary gear plate 21 is mounted on the drive shaft of the motor 20. The upper end of the suspension shaft 22 is installed on the planetary gear 210 of the planetary gear plate 21. There are multiple suspension shafts 22 and they are suspended vertically downward above the electrolytic cell 3. The truss 1 is used to carry the suspension shaft 22 and immerse it in the electrolyte.

[0030] The planetary gear plate 21 is mainly composed of a supporting outer plate 211, a planetary carrier, a sun gear 212 and a plurality of planetary gears 210 meshing around the sun gear 212. The planetary carrier, the sun gear 212 and the planetary gears 210 are assembled in the supporting outer plate 211. The driving shaft of the motor 20 is connected to the sun gear 212. The planetary carrier is connected between the sun gear 212 and the planetary gears 210. A reinforcing connecting frame is provided between the supporting outer plate 211 and the longitudinal servo drive.

[0031] Specifically, the suspension shaft 22 is divided into an inner shaft 220 and an outer shaft 221. The outer shaft 221 is detachably mounted on the inner shaft 220, and the inner shaft 220 is connected to the planetary gear 210. The inner shaft is shorter than the outer shaft. A radial through hole is provided at the upper end of the outer shaft 221 and the lower end of the inner shaft 220. A bolt passes through the radial through hole to connect the inner shaft and the outer shaft. The outer shaft 221 is also covered with a detachable separation sleeve 222 and a locking sleeve 223. The valve 4 and the separation sleeve 222 are alternately mounted on the outer shaft 221, and the locking sleeve 223 is installed at the lower end of the valve at the end of the outer shaft. The outer shaft can be removed to install the valve 4 and the separation sleeve 222. When an outer shaft 221 is filled with valves, it can be hung on the inner shaft 220 as a whole. In this way, the outer disc 211 can be supported with rows of outer shafts, and multiple valves can be immersed in the electrolyte for polishing at one time.

[0032] The valve is a two-way adapter valve or a three-way adapter valve, and the separation sleeve 222 is in the shape of a cross, with thin upper and lower ends and thick middle. When located between two adjacent valves, the upper and lower ends of the separation sleeve 222 are inserted into the valve ports of the valves.

[0033] During operation, first hang the valve on the outer shaft, then hang the outer shaft on the inner shaft one by one, start the truss, immerse the valves on multiple hanging shafts in the electrolyte of the electrolytic cell, start the motor, which is a reduction motor or a speed regulating motor, and slowly rotate. The sun gear rotates with multiple planetary gears, and then the valve rotates driven by the hanging shaft, so that the electrolyte flows and fully contacts the valve, making the polishing effect better.

[0034] The above is a detailed introduction to the electrochemical polishing device for a valve provided by the utility model. The description of the specific embodiment is only used to help understand the method and core idea of ​​the utility model. It should be pointed out that for ordinary technicians in this technical field, without departing from the principle of the utility model, the utility model can also be improved and modified, and these improvements and modifications also fall within the scope of protection of the claims of the utility model.

Claims

1. An electrochemical polishing device for a valve, comprising an electrolytic cell, a temperature controller, a cathode rod, an anode rod and a rectifier, wherein the rectifier is connected to the cathode rod and the anode rod, the cathode rod and the anode rod are respectively installed on two symmetrical sides of the electrolytic cell, and the temperature controller is installed at the bottom of the electrolytic cell. Features: It also includes a truss and a valve hanger. The top of the electrolytic cell is open, and the electrolytic cell is filled with electrolyte. The truss is erected on the top of the electrolytic cell, and the valve hanger is installed on the truss. The valves are hung on the valve hanger in groups. The valve hanger includes a motor, a planetary gear plate and a suspension shaft. The motor is installed on a truss through a motor frame. The drive shaft of the motor is vertically downward. The planetary gear plate is mounted on the drive shaft of the motor. The upper end of the suspension shaft is installed on the planetary gear of the planetary gear plate. There are multiple suspension shafts and they are suspended vertically downward above the electrolytic cell. The truss is used to carry the suspension shafts and immerse them in the electrolyte.

2. The electrochemical polishing device for a valve according to claim 1, characterized in that: The truss includes a transverse servo drive and a longitudinal servo drive mounted on the transverse servo drive, and the valve hanger is mounted on the longitudinal servo drive.

3. The electrochemical polishing device for a valve according to claim 2, characterized in that: The planetary gear plate is mainly composed of a supporting outer plate, a planetary carrier, a sun gear and multiple planetary gears meshing around the sun gear. The planetary carrier, sun gear and planetary gears are assembled in the supporting outer plate, the driving shaft of the motor is connected to the sun gear, the planetary carrier is connected between the sun gear and the planetary gears, and a reinforced connecting frame is provided between the supporting outer plate longitudinal servo drive.

4. The electrochemical polishing device for a valve according to claim 1, characterized in that: The suspension shaft is divided into an inner shaft and an outer shaft. The outer shaft is detachably sleeved on the inner shaft, and the inner shaft is connected to the planetary gear.

5. The electrochemical polishing device for a valve according to claim 4, characterized in that: The inner shaft is shorter than the outer shaft. The upper end of the outer shaft and the lower end of the inner shaft are provided with radial through holes. A bolt passes through the radial through holes to connect the inner shaft and the outer shaft.

6. The electrochemical polishing device for a valve according to claim 5, characterized in that: The outer shaft is also covered with a detachable separation sleeve and a locking sleeve. The valve and the separation sleeve are covered on the outer shaft in an intersecting manner, and the locking sleeve is installed at the lower end of the valve at the rear end of the outer shaft.

7. The electrochemical polishing device for a valve according to claim 6, characterized in that: The valve is a two-way adapter valve or a three-way adapter valve, and the separation sleeve is in the shape of a cross, with thin upper and lower ends and thick middle. When the separation sleeve is between two adjacent valves, the upper and lower ends of the separation sleeve are inserted into the valve ports of the valves.

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