A ball valve polishing device

Abstract

The application discloses a ball valve polishing machining device, which comprises a machine body, an expansion clamp rotating table and a polishing machining structure. The polishing machining structure comprises an electric push rod, a support table and a sleeve ring. When the electric push rod drives a piston rod, liquid in a hydraulic hole is driven to rotate an impeller through a one-way output liquid channel, drives a reciprocating screw rod to move a polishing wheel in a centrifugal manner, realizes self-adaptive adjustment of a polishing radius according to the curvature of a spherical surface, and drives the polishing wheel through a screw rod box in an annular array on the outer ring surface of the sleeve ring. The polishing wheel is driven to rotate in cooperation with the expansion clamp rotating table, can be efficiently polished in all directions on the spherical surface of the ball valve, and is flush with the polishing surface of the polishing wheel. The contact type probe sensor can cover the spherical surface and assist in processing of a problem area. The device solves the problem that a traditional device cannot synchronously adjust the polishing radius, shortens a processing cycle, reduces operation complexity and labor cost, and improves polishing efficiency, quality consistency and surface processing precision.

Description

Technical Field

[0001] This invention relates to the field of machining technology, specifically to a ball valve grinding and processing device. Background Technology

[0002] With the rapid development of industries such as petroleum, chemical, energy, and water supply and drainage, ball valves, as core components of fluid control, are seeing their application scenarios continuously expand and market demand continue to grow. At the same time, the in-depth advancement of Industry 4.0 and intelligent manufacturing concepts is prompting the manufacturing industry to transform and upgrade towards automation, digitalization, and intelligence. To meet the needs of large-scale production, improve the surface processing precision and quality consistency of ball valves, and ensure the safe and stable operation of fluid systems, the development of professional and efficient ball valve grinding and processing equipment has become an important direction for optimizing ball valve production processes and promoting technological innovation in the valve manufacturing industry, helping enterprises improve production efficiency and product competitiveness in the fierce market competition.

[0003] Currently, most mainstream ball valve grinding and processing equipment on the market has technical limitations. Their grinding motion trajectory can only perform surface grinding within a preset radius. Due to the lack of an adaptive adjustment mechanism, the grinding radius cannot be adjusted in real time according to the curvature changes of the ball valve surface. As a result, when processing the ball valve surface, not only is the processing cycle of a single batch of products relatively long, but the operation complexity and manual intervention costs are also high, which has become a technical bottleneck restricting the efficient production of ball valves.

[0004] Therefore, a ball valve grinding and processing device is proposed. Summary of the Invention

[0005] The purpose of this invention is to provide a ball valve grinding and processing device to solve the problem mentioned in the background art that the ball valve grinding and processing device cannot simultaneously change the grinding and processing radius.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a ball valve grinding and processing device, comprising:

[0007] Organism;

[0008] The expanding rotary table is bolted to the machining table surface of the machine body;

[0009] The grinding and machining structure is also bolted to the machining table of the machine body and is located above the expansion turntable;

[0010] The grinding structure includes an electric actuator, which is fixedly mounted on the upper surface of the support. The output of the electric actuator is inserted into the interior of the support and fixed to a piston rod that is slidably sealed inside the support. The piston end of the piston rod is slidably sealed into the interior of the hydraulic channel, which is located at the bottom of the support. A one-way output fluid channel is provided inside the support, extending from the bottom of the hydraulic channel to the rear.

[0011] The open end of the unidirectional output liquid channel is connected to the input end of the drive liquid channel inside the collar via a connecting pipe. Multiple screw boxes are fixed in a ring array along the outer ring surface of the collar, and each screw box contains a reciprocating screw rotatably mounted with a bearing assembly. One end of each reciprocating screw extends into the drive liquid channel inside the collar and is fixed to an impeller located within the drive liquid channel. A drive seat is mounted on each reciprocating screw inside the screw box, and the drive seat is constrained by the screw box, thus performing reciprocating linear motion along an open groove inside the screw box. The upper surface of the drive seat extends out of the screw box and is fixed to an adjustable mounting rod. One end of the mounting rod is connected to a grinding motor and a contact probe sensor via bolts.

[0012] Preferably, the support is bolted to the machining table of the machine body and is located on the right side of the expansion and clamping turntable. A lifting seat is fixedly installed above the side of the piston rod body, and the lifting seat moves up and down along the front surface of the support according to the constraint slide groove opened on the front side of the support. A connecting bracket is fixedly installed on the side of the lifting seat near the expansion and clamping turntable.

[0013] Preferably, a one-way valve that opens to the outside of the support is installed inside the one-way output liquid channel.

[0014] Preferably, the support has a circulation channel of equal size opened on the front side of the hydraulic channel inside, and a circulation fluid channel is opened through the lower side of the inner wall of the circulation channel to the hydraulic channel. A one-way valve that opens into the hydraulic channel is installed inside the circulation fluid channel. A return fluid channel is opened through the lower side of the inner wall of the circulation channel to the front side of the support inside, and a one-way valve that opens into the circulation channel is installed inside the return fluid channel.

[0015] Preferably, the open end of the return fluid channel is connected to the output end of the drive fluid channel via a connecting pipe.

[0016] Preferably, the collar is fixed to the connecting bracket on the side near the support, and is driven by the electric push rod of the lifting seat. After the collar is fixed to the connecting bracket, it is suspended directly above the expansion turntable.

[0017] Preferably, at least one grinding motor is provided, and the shaft end of the grinding motor is connected to a grinding wheel via a coupling. One contact probe sensor is provided, and the probe end is flush with the grinding surface of the grinding wheel.

[0018] Compared with the prior art, the beneficial effects of the present invention are:

[0019] 1. This invention, through the design of the grinding processing structure, allows the liquid in the hydraulic channel to flow through the one-way output channel to the drive channel when the electric actuator pushes the piston rod downward. The impact impeller drives the reciprocating screw to rotate, causing the drive seat to drive the grinding wheel to move centrifugally. This achieves adaptive adjustment of the grinding radius according to the curvature of the ball valve spherical surface, solving the problem that traditional devices cannot synchronously change the grinding radius, shortening the processing cycle of a single batch of products, and reducing operational complexity and manual intervention costs. At the same time, by setting multiple screw boxes in a ring array on the outer ring surface of the collar, the reciprocating screw in each screw box is linked with the impeller in the drive channel, allowing multiple grinding wheels to grind the ball valve spherical surface simultaneously. Combined with the continuous rotation of the expansion clamping turntable, this achieves all-round and efficient grinding of the ball valve, improving grinding efficiency and quality consistency.

[0020] 2. This invention, by mounting a contact probe sensor flush with the grinding surface of the grinding wheel, allows for synchronous position adjustment with the grinding motor and grinding wheel during the grinding of the ball valve's spherical surface. This ensures that the probe always points at the grinding surface at a specified detection distance throughout the grinding process, enabling comprehensive detection of the entire spherical surface of the ball valve. Simultaneously, it facilitates re-grinding or precision machining of problematic areas by technicians, ensuring the surface machining accuracy of the ball valve and providing a guarantee for the safe and stable operation of the fluid system. Attached Figure Description

[0021] Figure 1 This is an overall structural view of the present invention;

[0022] Figure 2 This is a cross-sectional view of the entire invention;

[0023] Figure 3 This is a top view of the entire invention;

[0024] Figure 4 This is a top view of the entire invention;

[0025] Figure 5 This is a top view of the entire invention.

[0026] In the picture:

[0027] 1. Organism;

[0028] 2. Expanding clamp turntable;

[0029] 3. Grinding and machining structure;

[0030] 31. Electric actuator; 311. Piston rod; 312. Lifting seat; 313. Connecting bracket;

[0031] 32. Support; 321. Hydraulic channel; 322. One-way output channel; 323. Circulation channel; 324. Circulation channel; 325. Return channel;

[0032] 33. Collar; 331. Drive fluid passage; 332. Impeller; 333. Reciprocating lead screw; 334. Lead screw box; 335. Drive base; 336. Mounting rod; 337. Grinding motor; 338. Grinding wheel; 339. Contact probe sensor. Detailed Implementation

[0033] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0034] Please see Figures 1 to 5 The present invention provides a technical solution for a ball valve grinding and processing device:

[0035] A ball valve grinding and processing device, comprising:

[0036] Body 1, as the basic structure of the equipment, plays a role in controlling, stabilizing and bearing the load for the entire equipment;

[0037] The expanding rotary table 2 is bolted to the machining table surface of the machine body 1, and has the ability to clamp and rotate workpieces, including inserting and expanding them.

[0038] The grinding structure 3 is also bolted to the processing table of the machine body 1 and is located above the expansion turntable 2, and is used for grinding the ball surface of the ball valve.

[0039] The grinding structure 3 includes an electric actuator 31, which is fixedly mounted on the upper surface of the support 32. The output of the electric actuator 31 is inserted into the interior of the support 32 and fixed to a piston rod 311 that is slidably sealed inside the support 32. The support 32 is bolted to the processing table of the machine body 1 and is located on the right side of the expansion turntable 2. A lifting seat 312 is fixedly mounted above the side of the piston rod 311. The lifting seat 312 moves up and down along the front surface of the support 32 according to the constraint groove opened on the front side of the support 32. A connecting bracket 313 is fixedly mounted on the side of the lifting seat 312 near the expansion turntable 2. The piston end of the piston rod 311 is slidably sealed into the interior of the hydraulic channel 321, which is opened on the support 321. Inside the support 32, a one-way output fluid passage 322 is provided from the lower end of the hydraulic passage 321 to the rear. A one-way valve that opens to the outside of the support 32 is installed inside the one-way output fluid passage 322. A circulation passage 323 of the same size is provided inside the support 32 on the front side of the hydraulic passage 321. A circulation fluid passage 324 is provided from the lower side of the inner wall of the circulation passage 323 to the hydraulic passage 321. A one-way valve that opens to the inside of the hydraulic passage 321 is installed inside the circulation fluid passage 324. A return fluid passage 325 is provided from the lower side of the inner wall of the circulation passage 323 to the front side of the support 32. A one-way valve that opens to the inside of the circulation passage 323 is installed inside the return fluid passage 325.

[0040] The open ends of the unidirectional output liquid channel 322 and the return liquid channel 325 are respectively connected to the input and output ends of the drive liquid channel 331 via pipelines. The drive liquid channel 331 is located inside the collar 33 and is C-shaped. The side of the collar 33 near the support 32 is fixed to the connecting bracket 313, and is driven by the electric push rod 31 of the lifting seat 312. After the collar 33 is fixed to the connecting bracket 313, it is suspended directly above the expansion clamp turntable 2. Multiple screw boxes 334 are fixed in a circular array along the axis on the outer ring surface of the collar 33. Each screw box 334 has a reciprocating screw 333 rotatably installed inside with bearing assemblies. One end of each reciprocating screw 333 extends and inserts into the drive liquid channel 331 inside the collar 33, and is fixed to the impeller 332 inside the drive liquid channel 331. After entering the drive fluid channel 331, it is driven to rotate by the flow of the safety fluid. The reciprocating screw 333 inside the screw box 334 is equipped with a drive seat 335. The drive seat 335 is constrained by the screw box 334 and moves in a reciprocating linear motion along the open slide groove inside the screw box 334. The upper surface of the drive seat 335 passes through the screw box 334 and is fixed to the mounting rod 336 with adjustment capability. One end of the mounting rod 336 is connected to the grinding motor 337 with a bolt. At least one grinding motor 337 is provided. The shaft end of the grinding motor 337 is connected to the grinding wheel 338 with a coupling. The grinding wheel 338 has the ability to deflect. The angle of the grinding wheel 338 is automatically adjusted according to the spherical surface of the ball valve to be ground to ensure stable contact between the grinding wheel 338 and the ball valve spherical surface.

[0041] The ball valve is fitted onto the clamping component of the expanding and clamping turntable 2. The clamping component clamps the ball valve in the valve hole by expanding outwards. The expanding and clamping turntable 2 is started, pushing the ball valve to the center of the collar 33 and contacting the grinding wheel 338. Then, the grinding motor 337 is started, and at the same time, the expanding and clamping turntable 2 drives the ball valve to rotate around the axis to complete the grinding of the edge of the ball surface. After the ball valve rotates one revolution, the electric actuator 31 is started, pushing the piston rod 311 downward, which drives the collar 33 to descend. At this time, the liquid in the hydraulic channel 321 is squeezed and... The unidirectional output liquid channel 322 flows to the drive liquid channel 331, impacting the drive impeller 332 to make it rotate, which in turn drives the reciprocating screw 333, causing the drive seat 335 to drive the grinding motor 337 and the grinding wheel 338 to move in the centrifugal direction, realizing the adaptation and adjustment with the ball valve spherical surface. Under the continuous push of the electric push rod 31, the grinding wheel 338 completes the grinding first centrifugally and then proximally according to the spherical surface. Throughout the process, the expanding clamp turntable 2 rotates continuously, and in conjunction with the grinding structure, realizes the all-round and efficient grinding of the ball valve.

[0042] In summary, by setting up the grinding structure 3, when the electric actuator 31 pushes the piston rod 311 downward, the liquid in the hydraulic channel 321 flows to the drive channel 331 through the one-way output channel 322. The impact impeller 332 drives the reciprocating screw 333 to rotate, causing the drive seat 335 to drive the grinding wheel 338 to move centrifugally. This achieves adaptive adjustment of the grinding radius according to the curvature of the ball valve spherical surface, solving the problem that traditional devices cannot synchronously change the grinding radius, shortening the processing cycle of a single batch of products, and reducing the complexity of operation and the cost of manual intervention. At the same time, by setting multiple screw boxes 334 in a ring array on the outer ring surface of the collar 33, the reciprocating screw 333 in each screw box 334 is linked with the impeller 332 in the drive channel 331, so that multiple grinding wheels 338 can grind the ball valve spherical surface at the same time. Combined with the continuous rotation of the expansion clamping turntable 2, it achieves all-round and efficient grinding of the ball valve, improving grinding efficiency and quality consistency.

[0043] As one embodiment of the present invention, such as Figures 1 to 4 As shown, one end of the mounting rod 336 is connected to the contact probe sensor 339 with a bolt. There is one contact probe sensor 339, and the probe end is flush with the grinding surface of the grinding wheel 338.

[0044] During operation, the contact probe sensor 339 is installed flush with the grinding surface of the grinding wheel 338. It works based on the principle of physical contact measurement. When grinding the ball valve spherical surface, the probe contacts the spherical surface. When the curvature of the spherical surface changes, the probe displacement is converted into an electrical signal by the internal conversion mechanism of the sensor and fed back to the control system. Based on the signal analysis results, the technicians can re-grind or finely process the problematic area of ​​the ball valve.

[0045] In summary, by mounting the contact probe sensor 339 flush with the grinding surface of the grinding wheel 338, the position of the sensor can be synchronously adjusted with the grinding motor 337 and the grinding wheel 338 during the grinding of the ball valve's spherical surface. This ensures that the probe probe always points at the grinding spherical surface at a specified detection distance throughout the grinding process, enabling comprehensive detection of the entire spherical surface of the ball valve. Simultaneously, it facilitates technicians to re-grind or finely machine problematic areas, ensuring the surface machining accuracy of the ball valve and providing a guarantee for the safe and stable operation of the fluid system.

[0046] Working principle: When grinding a ball valve, the ball valve is first placed on the clamping component of the expanding and clamping turntable 2. Then, the clamping component of the expanding and clamping turntable 2 is activated, and the ball valve is firmly clamped in the valve hole through an outward expansion support via a mechanical structure. The expanding and clamping turntable 2 is then activated, pushing the clamped ball valve to the center position of the collar 33, where it contacts the grinding wheel 338. The grinding motor 337 is then activated, and the expanding and clamping turntable 2, in conjunction with the clamping component, drives the ball valve to rotate around its own axis. This allows for grinding of the edge of the ball valve's spherical surface. After the ball valve rotates at least one revolution under the drive of the expanding and clamping turntable 2, the electric actuator 31 is activated, converting electrical energy into mechanical energy and pushing the piston rod 311 downward. The ball valve moves at a fixed distance (the distance is set according to the grinding radius of the grinding wheel 338 to ensure that the ball valve can be fully ground). Since the lifting seat 312 connected to the piston rod 311 is connected to the collar 33 via the connecting bracket 313, the collar 33 descends synchronously as a whole. In the hydraulic system of the electric actuator 31, when the piston rod 311 moves downward, the liquid in the hydraulic channel 321 is compressed. Under the action of the pressure difference, it flows through the one-way output channel 322 to the drive channel 331. The one-way valve structure in the one-way output channel 322 ensures that the liquid can only flow in one direction, preventing backflow. After the liquid flows into the drive channel 331, it impacts the drive impeller 332. The drive impeller 332... Under the impact force, the impeller 332 begins to rotate, driving the reciprocating screw 333, which is coaxially connected to it, to rotate synchronously. The screw box 334 provides support and guidance for the reciprocating screw 333. The open groove design allows the drive seat 335 to reciprocate linearly along the track inside the screw box 334. The drive seat 335 and the reciprocating screw 333 are connected by a thread. When the reciprocating screw 333 rotates, the drive seat 335 moves centrifugally under the transmission of the reciprocating screw 333, thereby driving the grinding motor 337 and grinding wheel 338 fixed on the drive seat 335 to move centrifugally. In this way, the grinding motor 337 and grinding wheel 338 can be aligned with the ball valve spherical surface after the collar 33 moves down. Synchronous adaptation adjustment ensures that the grinding wheel 338 is always in contact with the ball valve spherical surface with a predetermined pressure. During the above process, the grinding motor 337 and the grinding wheel 338 will be continuously pushed downward at a fixed distance by the electric push rod 31 to perform centrifugal and then proximal grinding operations according to the spherical surface of the ball valve. This can realize the adaptive adjustment of the grinding radius of the ball valve spherical surface, ensuring that the grinding wheel 338 is always in stable contact with the ball valve spherical surface throughout the grinding process, ensuring the consistency and efficiency of the grinding effect. During the entire grinding process, the expanding clamping turntable 2 rotates continuously, cooperating with the grinding action of the grinding processing structure 3, so that the grinding wheel 338 can grind different parts of the ball valve, realize all-round grinding, and improve grinding efficiency and quality.

[0047] Simultaneously, the contact probe sensor 339 is installed flush with the grinding surface of the grinding wheel 338. When the grinding motor 337 and the grinding wheel 338 perform centrifugal and then proximal grinding operations along the ball valve surface, the contact probe sensor 339 will also adjust synchronously to ensure that the probe always points at the ball valve at a specified distance. The working principle of the contact probe sensor 339 is based on physical contact measurement. When the grinding wheel 338 grinds the ball valve surface, the probe of the contact probe sensor 339 contacts the ball valve surface. As grinding progresses, if the curvature of the ball valve surface changes, the probe will be displaced due to the change in contact position. This displacement will be converted into an electrical signal by the conversion mechanism inside the sensor, and then fed back to the control system. After receiving the feedback signal, the control system analyzes and processes the signal. Based on the feedback, technicians can perform re-grinding or further fine machining operations on the problem area of ​​the ball valve.

[0048] It should be noted that the expanding clamping turntable 2 is an existing self-rotating clamping fixture, which will not be described in detail in this application; the contact probe sensor 339 can be a suitable three-coordinate measuring machine or a profilometer, etc., as a contact spherical detection sensor.

[0049] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A ball valve grinding and processing apparatus, comprising: Body (1); The expanding rotary table (2) is bolted to the machining table surface of the machine body (1), characterized in that: The grinding and processing structure (3) is also bolted to the processing table of the machine body (1) and is located above the expansion turntable (2); The grinding structure (3) includes an electric push rod (31), which is fixedly installed on the upper surface of the support (32). The output of the electric push rod (31) is inserted into the interior of the support (32) and fixed with a piston rod (311) which is slidably sealed inside the support (32). The piston end of the piston rod (311) is slidably sealed into the interior of the hydraulic channel (321), and the hydraulic channel (321) is opened at the bottom inside the support (32). A one-way output liquid channel (322) is opened from the lower end of the hydraulic channel (321) to the rear inside the support (32). The open end of the unidirectional output fluid channel (322) is connected to the input end of the drive fluid channel (331) located inside the collar (33) via a connecting pipe. Multiple screw boxes (334) are fixed in a ring-shaped array along the axial center on the outer ring surface of the collar (33). Each of these screw boxes (334) has a reciprocating screw (333) rotatably mounted inside a bearing assembly. One end of each of these reciprocating screws (333) extends and penetrates into the drive fluid channel (331) inside the collar (33), and connects with an impeller located inside the drive fluid channel (331). (332) Fixed, the reciprocating screw (333) inside the screw box (334) is equipped with a drive seat (335), and the drive seat (335) will be constrained by the screw box (334) and will move in a reciprocating linear motion along the open slide groove opened inside the screw box (334). The upper surface of the drive seat (335) extends out of the screw box (334) and is fixed to the mounting rod (336) with adjustment capability. One end of the mounting rod (336) is connected to the grinding motor (337) and the contact probe sensor (339) with a bolt. The support (32) has a circulation channel (323) of the same size opened on the front side of the hydraulic channel (321), and a circulation fluid channel (324) is opened through the lower side of the inner wall of the circulation channel (323) to the hydraulic channel (321). A one-way valve that opens into the hydraulic channel (321) is installed inside the circulation fluid channel (324). The support (32) has a return fluid channel (325) opened through the lower side of the inner wall of the circulation channel (323) to the front side of the support (32), and a one-way valve that opens into the circulation channel (323) is installed inside the return fluid channel (325). The collar (33) is fixed to the connecting bracket (313) on the side near the support (32), and is driven by the electric push rod (31) along with the lifting seat (312). After the collar (33) is fixed to the connecting bracket (313), it is suspended directly above the expansion clamp turntable (2).

2. The ball valve grinding and processing device according to claim 1, characterized in that: The support (32) is bolted to the processing table of the machine body (1) and is located on the right side of the expansion turntable (2). A lifting seat (312) is fixedly installed above the side of the piston rod (311), and the lifting seat (312) moves up and down along the front surface of the support (32) according to the constraint groove opened on the front side of the support (32). A connecting bracket (313) is fixedly installed on the side of the lifting seat (312) near the expansion turntable (2).

3. The ball valve grinding and processing device according to claim 1, characterized in that: The one-way output liquid channel (322) is internally equipped with a one-way valve that opens to the outside of the support (32).

4. The ball valve grinding and processing device according to claim 1, characterized in that: The open end of the return fluid channel (325) is connected to the output end of the drive fluid channel (331) via a connecting pipe.

5. The ball valve grinding and processing device according to claim 1, characterized in that: At least one grinding motor (337) is provided, and the shaft end of the grinding motor (337) is connected to a grinding wheel (338) with a coupling. One contact probe sensor (339) is provided, and the probe end is flush with the grinding surface of the grinding wheel (338).

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