A kind of inner wall surface abrasive flow polishing device for tension control valve processing

Abstract

The application belongs to the technical field of control valve processing, and discloses a inner wall surface abrasive grain flow polishing device for tension control valve processing, which comprises a supporting assembly, a clamping assembly is connected to the supporting assembly, a driving assembly is arranged on one side of the clamping assembly, a cooling assembly is arranged on the side of the clamping assembly away from the driving assembly, a material collecting assembly is connected to the end of the cooling assembly away from the clamping assembly, and a control part is connected to the supporting assembly. The clamping assembly is stably supported by the connecting frame, the position of the clamping part is adjusted through the guide rail, the coaxiality of the control valve and the abrasive grain part can be accurately controlled through cooperation with the grating displacement sensor, the clamping plate is used to stretch out and resist and fix after the control valve is in place, the pressure sensor on the clamping plate can monitor the contact pressure in real time, the control part automatically adjusts the clamping force according to the preset mapping model, and the over-loose displacement or the over-tight damage to the valve body is avoided.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of control valve processing, and particularly relates to an inner wall surface abrasive flow polishing device for tension control valve processing. BACKGROUND

[0002] In the polishing processing of the inner wall of the tension control valve, the first core problem is that the existing equipment is insufficient in clamping stability of the control valve and is difficult to accurately position the inner wall unpolished area. This problem is caused by the fact that the traditional clamping structure mostly adopts a fixed size clamp, which cannot be adapted to control valves of different specifications, is prone to cause the valve body displacement due to over-looseness and damage to the valve body due to over-tightness, and lacks effective monitoring means, so it is difficult to identify the unpolished standard area through the change of the abrasive flow resistance, thereby affecting the polishing accuracy.

[0003] The patent with the application number CN201921449049.X discloses a one-way intermittent abrasive flow polishing device. The third driving device is arranged on the second abrasive cylinder assembly. The first abrasive cylinder assembly is arranged above the second abrasive cylinder assembly through the third driving device. The first abrasive cylinder assembly or the second abrasive cylinder assembly is provided with a first valve. The first abrasive cylinder assembly is communicated with the second abrasive cylinder assembly through a pipeline, and the pipeline is provided with a second valve. The above scheme communicates the first cylinder body and the second cylinder body through the pipeline, and the pipeline is provided with the second valve, and the first valve is arranged in the first cylinder body or the second cylinder body. Through the cooperation of the two valves, the abrasive flow is realized to flow in one direction between the first cylinder body and the second cylinder body, and the workpiece clamped between the first cylinder body and the second cylinder body is polished in one direction. The workpiece channel is only affected by the abrasive inlet effect at one place, and the outlet is basically not affected. However, the above scheme still has the problems of poor abrasive flow conveying stability and low recycling rate. It is difficult to stably control the abrasive flow out pressure and flow rate, which is prone to cause uneven distribution of abrasive particles. After polishing, the temperature of the abrasive particles is increased, and there is a lack of timely cooling and efficient circulating conveying structure, and a large amount of abrasive particles are wasted.

[0004] Therefore, in order to solve the above technical problems, the application provides an inner wall surface abrasive flow polishing device for tension control valve processing. SUMMARY

[0005] The application aims at the above problems, and provides an inner wall surface abrasive flow polishing device for tension control valve processing, which has the advantages of maintaining the stable connection of the control valve and improving the polishing rate of the inner wall of the control valve.

[0006] In order to achieve the above object, the present application provides the following technical scheme: a kind of inner wall surface abrasive grain flow polishing device for tension control valve processing, including support assembly, the support assembly is connected with clamping assembly, and the clamping assembly is equipped with drive assembly on one side, the side of the clamping assembly away from the drive assembly is equipped with cooling assembly, the cooling assembly is connected with material collecting assembly at the end away from the clamping assembly, and the support assembly is connected with control part;

[0007] The support assembly includes a connecting frame, the clamping assembly is connected to the connecting frame, and the clamping assembly includes a clamping portion, a guide rail is slidably connected to one end of the clamping portion, the guide rail is fixedly connected to the connecting frame, a clamping hole is formed through the clamping portion, a connecting groove is formed in the inner ring of the clamping portion, a plurality of circumferentially arranged clamping plates are connected to the groove wall of the connecting groove, and a pressure sensor is connected to the clamping plate.

[0008] Preferably, the support assembly further includes a constraint portion for supporting the drive assembly, one end of the constraint portion is connected to the connecting frame, and one end of the connecting frame is connected to a power source.

[0009] Preferably, the drive assembly includes a telescopic rod, the telescopic rod is connected to a particle outlet at one end close to the clamping assembly, a storage cavity is formed in the particle outlet, a sliding plate is connected to the telescopic rod, and the sliding plate is slidably connected in the storage cavity.

[0010] Preferably, the material collecting assembly includes a reset rod, the reset rod is connected to a material collecting portion at one end close to the clamping assembly, and a jacking portion is connected to the material collecting portion at an end away from the clamping assembly.

[0011] Preferably, the material collecting assembly further includes a material collecting hole, the drive assembly further includes a replenishment hole, the replenishment hole is in communication with the storage cavity, and the material collecting hole and the replenishment hole are in communication through a pipe.

[0012] Preferably, the drive assembly further includes a limiting rod for restricting the position of the particle outlet, one end of the limiting rod close to the material collecting assembly is connected to the connecting frame.

[0013] Preferably, the clamping portion includes a bearing plate, a plurality of elastic rods are connected to one end of the bearing plate away from the cooling assembly, and one end of the bearing plate away from the elastic rods is connected to the guide rail.

[0014] Preferably, one end of the elastic rod away from the bearing plate is connected to a movable plate, and a connecting ring is connected between the movable plate and the bearing plate, and the connecting ring is distributed circumferentially around the clamping hole.

[0015] Preferably, the connecting ring is provided with a movable ring at each end of the length direction, and the movable ring is connected with the movable plate and the bearing plate respectively at one end away from each other.

[0016] Compared with the prior art, the present application has the following advantages:

[0017] 1. The connecting frame provides stable support for the clamping assembly, the clamping part adjusts the position through the guide rail, cooperates with the grating displacement sensor to accurately control the coaxiality of the control valve and the particle outlet, and the clamping plate is extended to resist and fix after the control valve is in place, the pressure sensor on the clamping plate can monitor the contact pressure in real time, the control part automatically adjusts the clamping force according to the preset mapping model to avoid excessive displacement or damage to the valve body, and at the same time, the pressure sensor can also accurately locate the area of the inner wall that does not meet the standard of polishing through the lateral pressure fluctuation generated by the flow of abrasive particles, to ensure the polishing quality.

[0018] 2. The pressure sensor at the driving end of the telescopic rod can dynamically adjust the pressurizing pressure and flow rate, the abrasive particles are cooled by the cooling assembly after passing through the control valve, and then enter the collecting part of the collecting assembly. The liquid level sensor of the collecting part monitors the stock of abrasive particle flow, and when the driving assembly storage cavity is insufficient, the control part opens the through-pipe electromagnetic valve, and the reset rod pushes the abrasive particles back to the storage cavity through the collecting hole, the through-pipe and the replenishment hole to realize the circulation of abrasive particles, reduce waste and improve resource utilization.

[0019] 3. The limiting rod of the driving assembly cooperates with the inclination sensor to constrain the position of the particle outlet and monitor its posture, and if there is a deviation, the control part adjusts the height of the particle outlet through the jacking part to correct the posture. The control part records parameters in real time and displays during the operation of the device, and if there is a fault such as telescopic rod jamming, cooling medium leakage, etc., the alarm will be immediately reported and the related components will be stopped working, and for different specifications of control valves, the operator only needs to input parameters, and the control part can automatically adjust the clamping force, driving pressure, etc. without the need for large-scale mechanical adjustment, improving the universality and operation convenience of the device. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 It is a schematic diagram of the three-dimensional structure of the whole device of the present application;

[0021] Figure 2 It is a schematic diagram of the connection structure of the driving assembly of the present application;

[0022] Figure 3 It is a schematic diagram of the connection structure of the collecting assembly of the present application;

[0023] Figure 4 It is a schematic diagram of the three-dimensional structure of the driving assembly of the present application;

[0024] Figure 5 It is a schematic diagram of the cross-sectional structure of the driving assembly of the present application;

[0025] Figure 6 It is the schematic diagram of the three-dimensional structure of the collecting assembly of the application;

[0026] Figure 7 It is the schematic diagram of the connecting structure of the cooling assembly of the application;

[0027] Figure 8 It is the schematic diagram of the three-dimensional structure of the clamping assembly of the application;

[0028] Figure 9 It is the schematic diagram of the three-dimensional structure of the connecting ring of the application;

[0029] Figure 10 It is the schematic diagram of the cross-sectional structure of the connecting ring of the application;

[0030] BRIEF DESCRIPTION OF DRAWINGS: 1, support assembly; 101, connecting frame; 102, constraint part; 103, power source; 2, control part; 3, clamping assembly; 301, clamping part; 3011, movable plate; 3012, connecting ring; 3013, elastic rod; 3014, bearing plate; 3015, connecting groove; 3016, clamping plate; 3017, movable ring; 302, guide rail; 303, clamping hole; 4, driving assembly; 401, telescopic rod; 4011, sliding plate; 402, particle outlet; 4021, feeding hole; 4022, storage cavity; 403, limiting rod; 5, cooling assembly; 6, collecting assembly; 601, reset rod; 602, collecting part; 6021, collecting hole; 7, jacking part. DETAILED DESCRIPTION

[0031] The technical solutions in the embodiments of the application will be clearly and completely described below with reference to the drawings in the embodiments of the application. Obviously, the described embodiments are only part of the embodiments of the application, rather than all the embodiments of the application. Based on the embodiments in the application, all other embodiments obtained by a person of ordinary skill in the art without creative work fall within the protection scope of the application.

[0032] As Figures 1-10 shown, a kind of inner wall surface abrasive flow polishing device for tension control valve processing, including being used to connect the support assembly 1 of device fixedly, clamping assembly 3 is connected for being used to the position of control valve body fixedly on support assembly 1, and the driving assembly 4 for the pressure delivery of abrasive is equipped on one side of clamping assembly 3, cooling assembly 5 for the cooling of abrasive after grinding is equipped on the side of clamping assembly 3 away from driving assembly 4, collecting assembly 6 for the recovery of abrasive after use is connected at the end of cooling assembly 5 away from clamping assembly 3, control part 2 is connected on support assembly 1, the working state of electronic component is received and regulated by control part 2.

[0033] In use, the control valve to be polished is connected and fixed with the clamping assembly 3, the position of the control valve is ensured to be stable, then the driving assembly 4 is controlled to move towards the end close to the control valve through the control part 2, and the abrasive particles are released by the driving assembly 4 to polish the inside of the control valve, and the abrasive particles after passing through the control valve are cooled by the cooling assembly 5 and then enter the material collecting assembly 6 for subsequent circulation.

[0034] In order to improve the clamping stability of the control valve, the supporting assembly 1 comprises a connecting frame 101 for connecting the support, and the clamping assembly 3 is connected to the connecting frame 101, so that the connection of the clamping assembly 3 is ensured to be stable. The clamping assembly 3 comprises a clamping part 301, a guide rail 302 is slidably arranged at one end of the clamping part 301, the position of the clamping part 301 is adjusted by the guide rail 302, so that the position of the control valve is adjusted. When the control valve needs to be connected with the clamping part 301, the clamping part 301 is controlled to slide along the guide rail 302, so that the clamping part 301 is out of the working range of the driving assembly 4. After the clamping part 301 completes the fixation of the control valve, the clamping part 301 is controlled to move along the guide rail 302, so that the control valve moves into the working range of the driving assembly 4, and the inside wall of the control valve is polished.

[0035] Meanwhile, the grating displacement sensor is additionally arranged on the guide rail 302, so that the position data of the clamping part 301 can be collected in real time, and the moving accuracy of the control valve is improved. That is, the clamping part 301 is automatically controlled to move along the guide rail 302 according to the position parameter of the abrasive particle outlet 402, so that the coaxiality error between the central axis of the control valve and the central axis of the abrasive particle outlet 402 meets the polishing requirement, and the abrasive particle flow distribution is prevented from being uneven due to the coaxiality deviation, so as to affect the polishing quality.

[0036] The guide rail 302 is fixedly connected to the connecting frame 101, the clamping hole 303 for restricting the position of the control valve is throughly arranged in the clamping part 301, the connecting groove 3015 is arranged in the inner ring of the clamping part 301, a plurality of clamping plates 3016 arranged in a circumferential array are connected to the groove wall of the connecting groove 3015, and the clamping plates 3016 are accommodated in the connecting groove 3015 and do not interfere with the inner diameter of the clamping hole 303. When the control valve moves into the connecting groove 3015, the clamping plates 3016 are controlled to move to abut and fix the outer wall of the control valve. The pressure sensor for identifying the polishing condition of the control valve is connected to the clamping plate 3016. When the abrasive particles move and polish in the control valve, the frictional resistance of the abrasive particles in the control valve is different due to the different roughness of the inner wall of the control valve, so that the pressure sensor on the side with the frictional resistance is abnormally stressed. At this time, it means that the polishing in the control valve is not completed. When the data recognized by the pressure sensor is normal, it means that the polishing in the control valve is completed.

[0037] A pressure sensor is used to build a control valve outer diameter and clamping force mapping model. When the control valve is placed in the clamping hole 303, the pressure sensor collects the contact pressure data of the clamping plate 3016 and the outer wall of the control valve in real time, and the control part 2 automatically adjusts the extension length of the clamping plate 3016 to ensure that the clamping force is stable within the preset threshold range, avoiding both loose clamping that causes control valve displacement and tight clamping that damages the valve body.

[0038] And the pressure sensor is used to monitor the lateral pressure fluctuation generated by the abrasive flow when flowing in the control valve. When there are defects such as protrusions and burrs on the inner wall of the control valve, the friction resistance of the abrasive flow passing through the defects increases, causing the pressure sensor detection value at the corresponding position to abnormally rise. The control part 2 accurately locates the non-standard polished area by comparing the data differences of the pressure sensors in the circumferential direction, and generates the defect position coordinates.

[0039] When all pressure sensor detection values remain stable for 30s and meet the preset polished qualified pressure threshold, the control part 2 automatically determines that the polishing is completed, triggers the subsequent process, and prompts the operator through sound and light alarm.

[0040] Further, in order to improve the support stability of the device, the support assembly 1 further comprises a constraint part 102 for supporting the driving assembly 4, so that the driving assembly 4 is stably supported and protected by the constraint part 102, preventing external force from directly acting on the driving assembly 4 and causing damage to the driving assembly 4. One end of the constraint part 102 is connected and extended with the connecting frame 101, and one end of the connecting frame 101 is connected with a power source 103 for providing power for the driving assembly 4 and the cooling assembly 5.

[0041] Further, in order to drive the position of the abrasive particles and make them fully contact with the control valve, the driving assembly 4 comprises a telescopic rod 401 for controlling the position of the abrasive particles. The telescopic rod 401 has a particle outlet 402 connected to one end close to the clamping assembly 3. The particle outlet 402 is located in the same vertical direction as the cooling assembly 5. When the abrasive particles enter the control valve from the particle outlet 402 and are discharged from the control valve, they will enter the cooling assembly 5 for cooling. The particle outlet 402 is provided with a storage cavity 4022 for storing abrasive particles. The telescopic end of the telescopic rod 401 is connected with a sliding plate 4011 which is slidingly connected in the storage cavity 4022. In use, the sliding plate 4011 is controlled to slide in the storage cavity 4022 by the telescopic rod 401, thereby driving the abrasive particles in the storage cavity 4022 to move, so that the abrasive particles are pressurized and released into the control valve to polish the inner wall of the control valve.

[0042] The driving end of the telescopic rod 401 is provided with a pressure sensor for monitoring the pressure of the abrasive particles on the sliding plate 4011. When the abrasive particle flow encounters a large resistance in the control valve, the pressure sensor in the telescopic rod 401 detects an increase in the value, and the control unit 2 automatically reduces the pushing pressure of the telescopic rod 401 to prevent the abrasive particles from blocking the control valve channel due to excessive pressure. If the pressure continues to rise above the safety threshold, the system immediately stops the driving assembly 4 from running and triggers a fault alarm to prompt the staff to check and repair it in time.

[0043] Further, in order to improve the use efficiency of the abrasive particles, the receiving assembly 6 further comprises a reset rod 601 for offsetting the potential energy of the abrasive particles. One end of the reset rod 601 close to the clamping assembly 3 is connected with a receiving part 602 for storing the abrasive particles, and the other end of the receiving part 602 away from the clamping assembly 3 is connected with a jacking part 7 for controlling the position of the driving assembly 4. The telescopic end of the jacking part 7 is connected with the particle outlet part 402, so that by controlling the telescopic length of the jacking part 7, the position height of the driving assembly 4 is adjusted, so that the driving assembly 4 is close to or away from the clamping assembly 3. At the same time, when the abrasive particles pass through the control valve, they first contact the end face of the reset rod 601 and then pass through the length of the reset rod 601 to weaken the potential energy of the abrasive particles, and then the abrasive particles are guided into the receiving part 602 for storage.

[0044] Further, in order to improve the recycling rate of the abrasive particles and reduce the waste of the abrasive particles, the receiving assembly 6 further comprises a receiving hole 6021 for guiding the abrasive particles in the receiving part 602, and the driving assembly 4 further comprises a replenishment hole 4021 in communication with the storage cavity 4022. The abrasive particles passing through the replenishment hole 4021 can enter the storage cavity 4022 for storage. The receiving hole 6021 and the replenishment hole 4021 are in communication through a pipe, and an electromagnetic valve is arranged in the pipe to control the opening and closing of the pipe. When the abrasive particles in the storage cavity 4022 are used up, the abrasive particles in the receiving part 602 are moved to the pipe through the receiving hole 6021 by controlling the movement of the reset rod 601, and then enter the replenishment hole 4021 and the storage cavity 4022 through the pipe. In this process, the length of the telescopic rod 401 is shortened, so that the sliding plate 4011 releases the storage space of the storage cavity 4022.

[0045] A liquid level sensor is installed on the receiving hole 6021 for real-time monitoring of the abrasive particle inventory in the receiving part 602. When the inventory is below the preset lower limit, the control unit 2 automatically opens the electromagnetic valve of the pipe between the receiving hole 6021 and the replenishment hole 4021, starts the driving device of the reset rod 601, and pushes the abrasive particles in the receiving part 602 through the pipe to the storage cavity 4022 of the driving assembly 4 to complete the recycling of the abrasive particles. When the abrasive particle inventory in the receiving part 602 reaches the upper limit, the electromagnetic valve is automatically closed and the replenishment is stopped to prevent the abrasive particles from overflowing.

[0046] In combination with the data of the abrasive particle flow sensor, the recycling rate of the abrasive particles is calculated and displayed in real time on the system interface. When the recycling rate is lower than 80%, the operator is prompted to check whether there is a leakage in the pipe and whether the abrasive particles are excessively worn, so as to ensure efficient use of abrasive particle resources and reduce production costs.

[0047] Further, the driving assembly 4 further comprises a limiting rod 403 for limiting the position of the particle outlet part 402, and an inclination sensor is arranged on the limiting rod 403. One end of the limiting rod 403 close to the material collecting assembly 6 is connected with the connecting frame 101, so as to limit the moving path of the particle outlet part 402 by using the limiting rod 403, and ensure that the position of the particle outlet part 402 can correspond to the position of the control valve clamped by the clamping assembly 3, and ensure that the inside of the control valve can be effectively polished.

[0048] The inclination sensor is used to monitor the attitude angle of the particle outlet part 402 in real time, so as to ensure that the particle outlet part 402 is accurately docked with the clamping hole 303 of the clamping assembly 3. At the same time, when it is monitored that the attitude deviation of the particle outlet part 402 exceeds a preset value, the control part 2 automatically controls the lifting height of the jacking part 7, adjusts the spatial position of the particle outlet part 402, corrects the attitude deviation, and ensures that the abrasive particles flow smoothly into the inside of the control valve.

[0049] In combination with the displacement data of the clamping part 301, the control part 2 can predict the best docking position of the particle outlet part 402 in advance. Before the clamping part 301 moves to the polishing station, the control part 2 controls the driving assembly 4 to adjust the position in advance, so as to shorten the docking time and improve the overall operation efficiency of the equipment.

[0050] Further, in order to improve the clamping stability of the control valve, the clamping part 301 comprises a bearing plate 3014 for supporting the weight of the control valve. A plurality of elastic rods 3013 are connected to one end of the bearing plate 3014 away from the cooling assembly 5. An activity plate 3011 is connected to one end of the elastic rods 3013 away from the bearing plate 3014. The distance between the activity plate 3011 and the bearing plate 3014 is adjusted by using the elastic rods 3013, so as to adapt to the height of control valves of different specifications. One end of the bearing plate 3014 away from the elastic rods 3013 is connected with the guide rail 302, so that the bearing plate 3014 moves on the guide rail 302, and the position of the control valve on the clamping part 301 is changed.

[0051] Further, the connection ring 3012 is connected between the activity plate 3011 and the bearing plate 3014. The connection groove 3015 is located on the inner ring of the connection ring 3012. The connection ring 3012 is distributed around the clamping hole 303, so as to protect the outer periphery of the control valve and ensure that the abrasive particles can completely pass through the inside of the control valve without spilling.

[0052] Further, the two ends of the connecting ring 3012 distributed along the length direction are respectively provided with a movable ring 3017 for compensating the height of the connecting ring 3012, one end of the movable ring 3017 away from each other is connected with the movable plate 3011 and the bearing plate 3014 respectively, and then when the control valve is polished, the movable plate 3011 is controlled to move away from the end of the bearing plate 3014, so that the relative sliding between the movable ring 3017 and the connecting ring 3012 is caused, and then the control valve is moved into the clamping hole 303, and the movable plate 3011 and the bearing plate 3014 are used to abut and limit the upper and lower ends of the control valve, and then the clamping plate 3016 is used to abut and fix the outer periphery of the control valve, so as to ensure the stability of the connection of the control valve.

[0053] Before the device is started, the control part 2 first completes the system initialization, detects the initial state of each component, including the connection fastening of the connecting frame 101 and the constraint part 102 in the support assembly 1, whether the output pressure of the power source 103 is in the preset safety range, the extension stroke calibration of the telescopic rod 401, the cleanliness of the particle outlet part 402 and the storage cavity 4022, the reset accuracy of the reset rod 601, and the sliding smoothness of the guide rail 302, the storage state of the clamping plate 3016 and the sensitivity of the pressure sensor, etc., so as to ensure that each part is in the normal working state, and then the device enters the standby mode.

[0054] When the tension control valve needs to be polished, the operator places the control valve to be polished near the clamping part 301 of the clamping assembly 3, and the control part 2 receives the start signal, and first controls the clamping part 301 to slide along the guide rail 302 away from the driving assembly 4 until the clamping part 301 is out of the working range of the driving assembly 4, so as to avoid interference between the control valve and the driving assembly 4 during installation. During this process, the grating displacement sensor installed on the guide rail 302 collects the position data of the clamping part 301 in real time, and feeds back the data to the control part 2, and the control part 2 accurately controls the sliding distance of the clamping part 301 according to the preset safety position parameter, so as to ensure that the operation space is sufficient.

[0055] Subsequently, the control unit 2 drives the movable plate 3011 of the clamping part 301 to move away from the bearing plate 3014. The movable plate 3011 drives the movable ring 3017 connected at both ends to slide along the connecting ring 3012 through the stretching of the elastic rod 3013, thereby expanding the effective clamping space of the clamping hole 303, facilitating the operator to place the control valve into the clamping hole 303. When the control valve is placed in position, the control unit 2 controls the movable plate 3011 to move reversely according to the specification parameters of the control valve pre-recorded in the system or preliminarily detected by the pressure sensor, and drives the movable ring 3017 to reset through the contraction force of the elastic rod 3013, so that the movable plate 3011 and the bearing plate 3014 respectively abut against the upper and lower end edges of the control valve, realizing the preliminary axial positioning of the control valve. At the same time, the control unit 2 controls the plurality of circumferentially arrayed clamping plates 3016 in the inner ring connecting groove 3015 of the clamping part 301 to synchronously extend, and the clamping plates 3016 gradually approach and abut against the outer wall of the control valve. In this process, the pressure sensor on the clamping plate 3016 collects real-time contact pressure data and transmits the data to the control unit 2.

[0056] The control unit 2 compares the real-time pressure data with the preset threshold range by using the mapping model of the control valve outer diameter and clamping force pre-constructed, automatically adjusts the extension length of the clamping plate 3016 until the clamping force is stabilized in the preset interval, avoids the displacement of the control valve during polishing due to loose clamping, and prevents the damage to the outer wall of the control valve due to tight clamping, thereby realizing the stable and self-adaptive clamping of the control valve.

[0057] After the clamping of the control valve is completed, the control unit 2 automatically calculates the moving path of the clamping part 301 according to the position parameters of the particle discharge part 402 of the driving assembly 4 and the real-time position data of the clamping part 301 fed back by the grating displacement sensor, controls the clamping part 301 to slide along the guide rail 302 towards the driving assembly 4, and makes the control valve gradually approach the particle discharge part 402.

[0058] During the movement, the control unit 2 real-time monitors and adjusts the moving speed and direction of the clamping part 301, ensures that the coaxiality error between the central axis of the control valve and the central axis of the particle discharge part 402 is controlled within the polishing requirement range. If it is detected that the coaxiality deviation exceeds the allowable range, the control unit 2 immediately adjusts the sliding direction of the clamping part 301 to compensate the deviation through fine adjustment, avoids the uneven distribution of the subsequent abrasive flow in the control valve due to the axis deviation, and affects the polishing quality. When the control valve moves to the working range of the particle discharge part 402 and the axis alignment accuracy meets the requirements, the clamping part 301 stops sliding, and at this time the device completes the preparation work before polishing.

[0059] Next, the driving assembly 4 starts to work, the control part 2 sends a command to the power source 103, the power source 103 provides power for the telescopic rod 401, drives the telescopic rod 401 to stretch out to the direction close to the control valve, and drives the sliding plate 4011 to slide in the storage cavity 4022 of the particle outlet 402. Since the sliding plate 4011 is closely attached to the inner wall of the storage cavity 4022, the movement of the sliding plate 4011 will generate pressure on the abrasive particles in the storage cavity 4022, so that the abrasive particles flow out of the outlet of the particle outlet 402 under the action of the pressure and enter the inner wall channel of the control valve. During the flow of the abrasive particles, the control part 2 monitors the pressurization pressure of the abrasive particles by the pressure sensor on the driving end of the telescopic rod 401 in real time, dynamically adjusts the stretching speed and pressure of the telescopic rod 401 according to the polishing requirement of the inner wall of the control valve, ensures that the abrasive particles act on the inner wall of the control valve at a stable flow rate and pressure, and realizes uniform polishing.

[0060] Meanwhile, the limiting rod 403 on the driving assembly 4 restricts the movement path of the particle outlet 402, the inclination sensor on the limiting rod 403 collects the attitude angle data of the particle outlet 402 in real time and feeds back to the control part 2, if it is detected that the attitude of the particle outlet 402 deviates due to external force or vibration, the control part 2 immediately controls the jacking part 7 to adjust the height of the particle outlet 402 to correct the attitude, so that the abrasive particles flow smoothly and accurately into the inside of the control valve.

[0061] When the abrasive particles flow in the inner wall channel of the control valve, they will rub against the defects such as protrusions and burrs on the surface of the inner wall, thereby polishing the inner wall. In this process, the pressure sensor on the clamping plate 3016 of the clamping part 301 plays an important role. Since the roughness of different positions of the inner wall of the control valve is different, the frictional resistance of the abrasive particles flowing through different areas is different, which is transmitted to the clamping plate 3016 through the control valve, resulting in a change in the detection value of the pressure sensor at the corresponding position. The control part 2 collects and analyzes the data of the pressure sensors in the circumferential direction in real time, if the pressure value of a certain area abnormally increases, it indicates that there is a defect in the inner wall of the area that has not been polished in place, the control part 2 will record the defect position coordinates, and adjust the output pressure of the driving assembly 4 or the flow rate of the abrasive particles according to the defect severity, and intensify the polishing intensity of the area; if the detection values of all pressure sensors remain stable for 30s continuously, and the values are all within the preset polishing qualified pressure threshold range, the control part 2 determines that the polishing of the inner wall of the control valve is completed, and triggers the subsequent process.

[0062] After the abrasive particles pass through the control valve, the temperature of the abrasive particles will increase due to friction. If the abrasive particles are directly recycled, the subsequent polishing effect may be affected, and even the device components may be damaged. Therefore, after the abrasive particles flow out of the control valve, the abrasive particles directly enter the cooling assembly 5. The cooling medium in the cooling assembly 5 fully contacts the abrasive particles, absorbs the heat of the abrasive particles through heat exchange, and rapidly reduces the temperature of the abrasive particles to a preset safe range. During the cooling process, the control unit 2 monitors the cooling temperature and flow of the cooling assembly 5 in real time. If the cooling effect is detected to be poor, the flow or temperature of the cooling medium is automatically adjusted to ensure stable cooling effect.

[0063] After cooling, the abrasive particles then enter the storage part 602 of the collection assembly 6. The storage part 602 temporarily stores the abrasive particles, monitors the abrasive particle inventory in the storage part 602 in real time through a liquid level sensor, and feeds back data to the control unit 2. When the abrasive particles in the storage cavity 4022 of the driving assembly 4 are about to be exhausted, the control unit 2 controls the electromagnetic valve between the collection hole 6021 and the feeding hole 4021 of the driving assembly 4 to open, and simultaneously drives the reset rod 601 of the collection assembly 6 to move towards the storage part 602. The reset rod 601 generates a pushing force on the abrasive particles in the storage part 602, so that the abrasive particles pass through the collection hole 6021, enter the pipe, and then are transported to the storage cavity 4022 of the outlet part 402 through the feeding hole 4021, completing the cyclic feeding of the abrasive particles. During this process, the control unit 2 synchronously controls the telescopic rod 401 to retract away from the outlet part 402, drives the sliding plate 4011 to move, releases the storage space of the storage cavity 4022, ensures that the abrasive particles can be smoothly filled into the storage cavity 4022, and avoids overflow of the abrasive particles during the transportation process due to insufficient space in the storage cavity 4022.

[0064] When the abrasive particle inventory in the storage part 602 is lower than a preset lower limit, or after the storage cavity 4022 is filled, the control unit 2 closes the electromagnetic valve to stop the transportation of the abrasive particles, and controls the reset rod 601 to reset, waiting for the next cycle.

[0065] During the entire polishing process, the control unit 2 is always in a core control position. In addition to the above functions, the control unit 2 also records the operating parameters of the device in real time, such as polishing time, abrasive particle cycle number, driving pressure, cooling temperature, pressure sensor data, etc., and displays the operating parameters on the system interface in real time, facilitating the operator to monitor the operating state of the device. If a component fails, such as the telescopic rod 401 being stuck, the pressure sensor being invalid, the cooling medium leaking, etc., the control unit 2 will immediately detect abnormal data, trigger an audible and visual alarm, and automatically stop the work of the related components to prevent the fault from expanding. The operator can quickly locate and eliminate the fault according to the fault information displayed by the control unit 2, and ensure the safe and stable operation of the device.

[0066] In addition, the device also has certain intelligent adaptive capacity, when it is needed to polish different specifications of tension control valves, the operator only needs to input new control valve specification parameters in the control part 2, the control part 2 will automatically adjust the clamping force of the clamping assembly 3, the output pressure of the driving assembly 4, the abrasive particle circulation speed and other parameters, without the need for large-scale mechanical adjustment of the device, greatly improving the versatility and operation convenience of the device, effectively reducing the adjustment time and labor cost in the production process.

[0067] It should be noted that in this document, the terms "comprise", "comprising", or any other variant thereof are intended to cover non-exclusive inclusions, such that processes, methods, articles, or apparatuses that comprise a list of elements are not limited to those elements, but can also include other elements not expressly listed, or inherent to such processes, methods, articles, or apparatuses.

[0068] Although embodiments of the present application have been shown and described, it is to be understood that various modifications, substitutions, replacements and changes can be made to these embodiments without departing from the principles and spirit of the present application, and the scope of the present application is defined by the appended claims and their equivalents.

Claims

1. A kind of inner wall surface abrasive grain flow polishing device for tension control valve processing, comprising support assembly (1), it is characterized by: A clamping assembly (3) is connected to the support assembly (1), one side of the clamping assembly (3) is provided with a driving assembly (4), one side of the clamping assembly (3) away from the driving assembly (4) is provided with a cooling assembly (5), one end of the cooling assembly (5) away from the clamping assembly (3) is connected with a material collecting assembly (6), and the support assembly (1) is connected with a control part (2). The support assembly (1) comprises a connecting frame (101), the clamping assembly (3) is connected to the connecting frame (101), the clamping assembly (3) comprises a clamping part (301), one end of the clamping part (301) is slidably provided with a guide rail (302), the guide rail (302) is fixedly connected to the connecting frame (101), a clamping hole (303) is formed through the clamping part (301), a connecting groove (3015) is formed in the inner ring of the clamping part (301), a plurality of circumferentially arranged clamping plates (3016) are connected to the groove wall of the connecting groove (3015), and a pressure sensor is connected to the clamping plate (3016). The clamping part (301) comprises a bearing plate (3014), a plurality of elastic rods (3013) are connected to one end of the bearing plate (3014) away from the cooling assembly (5), and one end of the bearing plate (3014) away from the elastic rod (3013) is connected with the guide rail (302). One end of the elastic rod (3013) away from the bearing plate (3014) is connected with a movable plate (3011), and a connecting ring (3012) is connected between the movable plate (3011) and the bearing plate (3014), and the connecting ring (3012) is distributed in the circumferential direction of the clamping hole (303). The two ends of the connecting ring (3012) distributed along the length direction are slidably provided with movable rings (3017), and one end of each of the movable rings (3017) away from each other is connected with the movable plate (3011) and the bearing plate (3014) respectively.

2. The inner wall surface abrasive grain flow polishing device for machining of a tension control valve according to claim 1, characterized by: The support assembly (1) further comprises a constraint part (102) for supporting the driving assembly (4), one end of the constraint part (102) is connected with the connecting frame (101), and one end of the connecting frame (101) is connected with a power source (103).

3. The apparatus according to claim 1, wherein the apparatus is used for polishing the inner wall surface of a tension control valve. The driving assembly (4) comprises a telescopic rod (401), one end of the telescopic rod (401) close to the clamping assembly (3) is connected with a particle outlet (402), a storage cavity (4022) is formed in the particle outlet (402), a sliding plate (4011) is connected to the telescopic rod (401), and the sliding plate (4011) is slidably connected in the storage cavity (4022).

4. The apparatus according to claim 3, wherein the apparatus is used for polishing the inner wall surface of a tension control valve. The material collecting assembly (6) comprises a reset rod (601), one end of the reset rod (601) close to the clamping assembly (3) is connected with a material collecting part (602), one end of the material collecting part (602) away from the clamping assembly (3) is connected with a jacking part (7).

5. The apparatus according to claim 4, wherein the apparatus is used for polishing the inner wall surface of a tension control valve. The material collecting assembly (6) further comprises a material collecting hole (6021), the driving assembly (4) further comprises a material supplementing hole (4021) which communicates with the material storage cavity (4022), and the material collecting hole (6021) and the material supplementing hole (4021) communicate through a through pipe.

6. The apparatus according to claim 4, wherein the apparatus is used for polishing the inner wall surface of a tension control valve. The driving assembly (4) further comprises a limiting rod (403) for limiting the position of the particle discharging part (402), and one end of the limiting rod (403) close to the material collecting assembly (6) is connected with the connecting frame (101).

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