Processing technology of industrial valve

Abstract

The invention discloses a machining process of an industrial valve, and relates to the technical field of industrial valve machining. A door-shaped table, a clamping part, a switching part, a synchronous grinding mechanism and a quick blocking mechanism are matched to complete machining of the industrial valve, the clamping part is installed on the left portion of the upper end face of the door-shaped table, and the roughness of a row of grinding blocks close to an E-shaped frame is sequentially decreased in the direction from inside to the edge along the circle center of a mounting cylinder. The mode of gradually switching the grinding blocks from coarse to fine is achieved through the gradual grinding unit, it is ensured that the sealing face of the valve body is gradually smooth and uniform, meanwhile, the tedious operation of frequent shutdown is eliminated by automatically switching the grinding blocks, the elastic grinding strips can automatically deform according to the shape of an inner cavity of the valve body, it is ensured that the elastic grinding strips make close contact with the wall of the inner cavity, and the service life of the valve body is prolonged. And the quick blocking mechanism can block a plurality of ports of the valve body at the same time, so that the blocking operation is simplified, the consistency of the blocking force of each port is ensured, and the accuracy of the sealing test is improved.

Description

Technical Field

[0001] The invention relates to the technical field of industrial valve processing, in particular to a processing technology for industrial valves. Background Art

[0002] Industrial valves are an important accessory for controlling the flow of media on industrial pipelines. They are widely used in the oil and gas, chemical, power generation, water treatment, pharmaceutical and other industries. They can handle various fluids, including liquids, gases, slurries and steam. In industrial applications, they have the functions of starting and stopping fluid flow, adjusting flow and pressure, preventing backflow, distributing fluids and releasing pressure. The application of industrial valves in all walks of life directly affects the efficiency of the production process, the safety of equipment and environmental protection. They are an indispensable and important part of industrial production. At present, the processing steps of industrial valves mainly include casting, heat treatment, surface galvanizing, inner cavity and sealing surface grinding, performance testing, assembly and other steps.

[0003] Among them, the inner cavity and sealing surface polishing and performance testing are crucial, because they directly affect the sealing performance of the valve. Since the valve body is usually cast, its inner cavity wall and sealing surface have a large roughness. The sealing surface of the valve requires extremely high flatness and finish to ensure that it can completely block the flow of medium when closed to prevent leakage. The smooth inner wall of the inner cavity of the valve body can reduce the resistance of the fluid, prevent the accumulation of particles in the medium, and help improve the durability of the valve. Therefore, the inner cavity and sealing surface of the valve body need to be polished.

[0004] Since the valve body sealing surface has a high requirement for smoothness and refinement, the sealing surface needs to go through multiple grinding stages, from rougher primary grinding to final fine polishing, to ensure that the surface achieves the required smoothness and sealing performance. Existing valve body sealing surface grinding equipment usually only uses a single roughness grinding block at a time, and each time a grinding block of one roughness is used, it is necessary to stop the machine and replace the grinding block of the next level of roughness. Frequent shutdowns to replace grinding blocks are cumbersome and time-consuming. In addition, due to the complex geometric shape inside the valve body, the shape of the existing grinding blocks is usually specific and unchanging, and they often cannot fit tightly against the inner wall, resulting in some areas that cannot be effectively polished, and there are problems of dead angles and uneven polishing.

[0005] In addition, when conducting a sealing test on the valve body, it is necessary to block its multiple ports and pass liquid to detect its sealing. However, the existing method of blocking multiple ports of the valve body in turn requires manual or mechanical adjustment of the blocking and unblocking operations of each port, which increases the test time and operation complexity and reduces the test efficiency. Moreover, the method of blocking multiple ports in turn may cause inconsistent strength of each blockage, thereby affecting the accuracy of the test.

[0006] In addition, after the valve body is polished and tested, it needs to be moved to different processing positions, which requires extra time for clamping and removing operations, further increasing the complexity of the operation and slowing down the processing speed of the valve body. Summary of the invention

[0007] The present invention provides a processing technology for industrial valves, which solves the problem that only a single roughness grinding block can be used each time during the existing valve body processing and grinding. The frequent shutdown to replace grinding blocks with different roughnesses is cumbersome and time-consuming. Secondly, due to the complex geometric shape inside the valve body, the grinding block is fixed in shape and difficult to fit tightly with the inner cavity wall, which leads to the inability to effectively grind some areas, and there are problems of dead angles and uneven grinding. In addition, when testing the valve body sealing, multiple ports need to be manually or mechanically blocked one by one, which increases the complexity and time of the operation, and the inconsistent blocking force affects the test accuracy. After grinding is completed, it is necessary to move to different processing positions for clamping and removal operations, which further increases the cumbersomeness of the operation and slows down the processing speed.

[0008] The present invention provides a processing technology for an industrial valve, and the specific processing steps of the industrial valve are as follows:

[0009] S1. Casting process: melt the metal and cast it into the mold. After cooling, it forms the initial shape of each valve component to obtain the required blank.

[0010] S2. Heat treatment: eliminate the internal stress generated during the casting or forging process and improve the mechanical properties of the material.

[0011] S3. Surface treatment: Polish the outer surface of the valve to improve the appearance quality and reduce the friction resistance when the medium flows. According to the use environment of the valve, zinc plating, chrome plating or nickel plating is performed on the surface to enhance corrosion resistance.

[0012] S4. Fine processing of sealing surface and cavity surface: The inner cavity and sealing surface of the valve body are finely processed at the same time through the synchronous grinding mechanism to ensure the sealing of the valve.

[0013] S5. Performance test: The three ports of the valve body are blocked at the same time by the quick-blocking mechanism, and then high-temperature liquid and low-temperature liquid are introduced into the valve body in sequence under the specified pressure to perform water pressure test and large temperature difference change test at the same time to check its sealing and strength.

[0014] S6. Component assembly: Assemble the valve body, valve cover, valve stem and sealing parts, and debug the assembled valve to ensure the flexible opening and closing of the valve.

[0015] The processing steps of the industrial valve in the above steps S1-S6 need to be completed by the door type table, the clamping part, the switching part, the synchronous grinding mechanism and the quick plugging mechanism.

[0016] A clamping part is installed on the left part of the upper end surface of the gate-type platform, and a strip-shaped through groove is opened in the transverse section of the gate-type platform, and a switching part is installed in the strip-shaped through groove. The switching part includes a mounting rod frame, and the left part of the mounting rod frame is provided with a synchronous grinding mechanism for simultaneously grinding and finishing the valve body sealing surface and the inner cavity wall, and the right part of the mounting rod frame is provided with a quick plugging mechanism for simultaneously blocking the three ports of the valve body to facilitate rapid sealing testing. The switching part is used to sequentially control the synchronous grinding mechanism and the quick plugging mechanism to contact the valve body respectively so as to facilitate rapid switching to apply different processing steps to the valve body. The synchronous grinding mechanism includes a horizontal plate fixedly connected to the lower end surface of the left part of the mounting rod frame, two vertical slides symmetrically slidably connected to the horizontal plate, a bidirectional threaded rod rotatably connected to the horizontal plate and threadedly connected to the two vertical slides, and mounting cylinders respectively fixedly connected to the opposite sides of the vertical slides , a driving ring rotatably connected to the outside of the mounting cylinder, a progressive grinding unit jointly arranged on the mounting cylinder and the driving ring for gradually grinding the valve body sealing surface from rough to fine, and a self-deforming grinding unit jointly arranged between the two mounting cylinders for adaptively deforming according to the shape of the valve body cavity so as to fit the valve body cavity. The progressive grinding unit includes: a plurality of E-shaped frames slidably connected to the outside of the driving ring through a connecting telescopic rod, a plurality of rotating columns equidistantly connected to the E-shaped frames, grinding blocks symmetrically fixedly connected to the outside of the rotating columns through fixed blocks, and a driving assembly arranged between the E-shaped frames and the mounting cylinder for driving the grinding blocks to move so as to grind the valve body sealing surface, the roughness of a row of the grinding blocks away from the E-shaped frames gradually increases from the inside to the edge along the center of the mounting cylinder, and the roughness of a row of the grinding blocks close to the E-shaped frames gradually decreases from the inside to the edge along the center of the mounting cylinder.

[0017] In one possible implementation, the self-deformable grinding unit includes a No. 1 screw fixedly connected to the cavity wall of the mounting tube on the side close to the vertical slide board, the No. 1 screw is externally threadedly connected to a sleeve, the end of the sleeve away from the mounting tube is fixedly connected to a column rod via a spring telescopic column, both ends of the column rod are fixedly connected to elastic grinding strips, a sliding groove is axially provided on the outside of the sleeve, and the side of the driving ring away from the vertical slide board is fixedly connected to an L-shaped sliding strip slidably connected to the sliding groove.

[0018] In a possible implementation, an alignment hole is provided on the right end surface of the elastic grinding strip located on the left, and an alignment column matching the alignment hole is fixedly connected to the left end surface of the elastic grinding strip located on the right.

[0019] In one possible implementation, the drive assembly includes a No. 2 screw rod fixedly connected to a side of the E-shaped frame close to the mounting tube, the mounting tube is fixedly connected to an end face gear ring on a side away from the vertical slide, the No. 2 screw rod is externally threadedly connected to a gear ring meshing with the end face gear ring, the drive ring is circumferentially equidistantly fixedly connected to a plurality of sliding rods corresponding to the E-shaped frame through connecting strips on a side away from the vertical slide, the end of the rotating column is fixedly connected to a gear, the outside of the sliding rod is equidistantly slidably connected to a plurality of racks corresponding to and meshing with the gear, and the rack is symmetrically fixedly connected to a limit strip on a side close to the gear.

[0020] In a possible implementation, two side end surfaces of the gear ring are respectively fixedly connected with limiting rings for limiting the position of the gear ring.

[0021] In a possible implementation, the switching part also includes a turntable rotatably connected to the rear groove wall of the strip through groove, the mounting rod frame is embedded and fixedly connected to the turntable, the front end surface of the turntable is fixedly connected to an arc-shaped guide frame via a fixed column, the front groove wall of the strip through groove is fixedly connected to a stop column slidably connected to the arc-shaped guide frame via a leaf spring, and the arc-shaped guide frame is symmetrically provided with arc-shaped grooves that cooperate with the support columns.

[0022] In one possible implementation, the quick blocking mechanism includes a door-shaped frame fixedly connected to the right part of the mounting rod frame, the lower end surface of the transverse section of the door-shaped frame is slidably connected to a mounting ring through a spring telescopic support, the inner wall of the mounting ring is fixedly connected to a butt tube that slides through the transverse wall panel of the door-shaped frame, the two vertical sections of the door-shaped frame are respectively slidably connected to sliding columns, the opposite ends of the two sliding columns are fixedly connected to blocking plates, the lower end surface of the transverse section of the door-shaped frame is slidably connected to a sliding bar, a connecting rod is hinged between the mounting ring and the sliding bar, the left and right opposite sides of the door-shaped frame are respectively hinged with a two-way telescopic rod through a connecting rod, the upper end of the two-way telescopic rod is hinged to the sliding bar, and the lower end of the two-way telescopic rod is hinged to the sliding column.

[0023] In a possible implementation, the clamping portion includes two mounting plates symmetrically fixedly connected to the upper end surface of the door-shaped platform in a front-to-back manner, and the opposite sides of the two mounting plates are slidably connected with arc-shaped clamping plates through electric telescopic rods, and the arc-shaped inner walls of the two arc-shaped clamping plates are respectively fixedly connected with flexible layer pads.

[0024] It can be seen from the above technical solutions that the present invention has the following advantages:

[0025] In the present invention, the grinding method of grinding blocks with different roughnesses is switched step by step from inside to outside and from coarse to fine by a progressive grinding unit, so that the surface quality of the valve body sealing surface can be gradually improved, thereby obtaining a smoother and more uniform surface. The design of automatically switching grinding blocks eliminates the tedious operation of frequently replacing grinding blocks, and the need for frequent shutdowns also greatly shortens the downtime during the grinding process, thereby improving processing efficiency.

[0026] In the present invention, the elastic polishing strip is initially moved along the cylindrical inner cavity of the valve body for polishing, and then when moving into the spherical cavity of the valve body, they are docked together and squeezed to deform and arch. It can adapt to the different automatic deformations of the inner cavity of the valve body, ensuring close contact with the valve body cavity wall during the entire polishing process, and can polish the entire inner cavity wall evenly, thereby improving the polishing quality and smoothness, ensuring the uniformity of the inner cavity wall surface, and ensuring that all surfaces can be polished evenly, thereby eliminating polishing dead angles.

[0027] In the present invention, multiple ports on the valve body are blocked simultaneously by combining the mounting ring, sliding column, blocking plate, sliding bar, connecting rod and bidirectional telescopic rod in the quick blocking mechanism, eliminating the operation of adjusting the blocking position one by one, greatly shortening the test preparation time, making the entire sealing test process more efficient, and simultaneous blocking can ensure that the blocking force applied to each port is consistent, avoiding uneven force caused by blocking one by one, thereby improving the accuracy and reliability of the test results.

[0028] In the present invention, the switching part sequentially controls the synchronous grinding mechanism and the quick plugging mechanism to move to the position of the valve body respectively, and then performs different processing steps on the valve body, so that the different processing steps of the valve body can be quickly switched. The valve body is always in the same position during the processing, eliminating the frequent handling and clamping steps, so that different processing steps can be seamlessly connected, thereby speeding up the processing speed of the valve body. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying creative work.

[0030] Figure 1 This is a processing diagram of the industrial valve provided by the present invention.

[0031] Figure 2 The present invention provides an overall structural diagram.

[0032] Figure 3 This is a schematic diagram of the overall cross-sectional structure provided by the present invention.

[0033] Figure 4 The present invention provides Figure 3 Schematic diagram of the enlarged structure of part A in FIG.

[0034] Figure 5 This is a schematic diagram of the installation structure of the clamping part and the synchronous grinding mechanism provided by the present invention.

[0035] Figure 6 This is a schematic diagram of the structure of the synchronous grinding mechanism provided by the present invention.

[0036] Figure 7 This is a partial structural schematic diagram of the synchronous grinding mechanism provided by the present invention.

[0037] Figure 8 The present invention provides Figure 7 Schematic diagram of the enlarged structure of part B.

[0038] Fig. 9 This is a schematic diagram of the matching structure of the alignment posts and alignment holes provided by the present invention.

[0039] Fig.10 This is a schematic structural diagram of the quick-blocking mechanism provided by the present invention.

[0040] Fig.11 This is a schematic diagram of the specific shape of the working object provided by the present invention.

[0041] The above drawings include the following reference numerals:

[0042] 1. Gate type table; 2. Clamping part; 21. Mounting plate; 22. Electric telescopic rod; 23. Arc clamping plate; 3. Switching part; 31. Mounting rod frame; 32. Turntable; 33. Arc guide frame; 34. Leaf spring; 35. Stop column; 36. Arc groove; 4. Synchronous grinding mechanism; 41. Horizontal plate; 42. Vertical slide plate; 43. Bidirectional threaded rod; 44. Mounting cylinder; 45. Drive ring; 46. Progressive grinding unit; 461. Connecting telescopic rod; 462. E-shaped frame; 463. Rotating column; 464. Grinding block; 465. Drive assembly; 4651. No. 2 screw; 4652. End face gear Ring; 4653, gear ring; 4654, slide bar; 4655, gear; 4656, rack; 4657, limit strip; 47, self-deformable grinding unit; 471, No. 1 screw; 472, sleeve; 473, spring telescopic column; 474, column; 475, elastic grinding strip; 476, sliding groove; 477, L-shaped slide; 5, quick blocking mechanism; 51, door frame; 52, spring telescopic support pillar; 53, mounting ring; 54, butt tube; 55, slide column; 56, blocking plate; 57, slide bar; 58, connecting rod; 59, two-way telescopic rod; 6, alignment hole; 7, alignment column; 8, limit ring. DETAILED DESCRIPTION

[0043] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific embodiments of the present invention are described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the present invention, so the present invention is not limited by the specific embodiments disclosed below.

[0044] See also Figure 1 , Figure 2 , Figure 3 and Figure 5 The present invention provides a technical solution: a processing technology for industrial valves. The specific processing steps of the industrial valves are as follows:

[0045] S1. Casting process: melt the metal and cast it into the mold. After cooling, it forms the initial shape of each valve component to obtain the required blank.

[0046] S2. Heat treatment: eliminate the internal stress generated during the casting or forging process and improve the mechanical properties of the material.

[0047] S3. Surface treatment: Polish the outer surface of the valve to improve the appearance quality and reduce the friction resistance when the medium flows. According to the use environment of the valve, zinc plating, chrome plating or nickel plating is performed on the surface to enhance corrosion resistance.

[0048] S4, fine processing of sealing surface and cavity surface: the inner cavity and sealing surface of the valve body are finely processed simultaneously through the synchronous grinding mechanism 4 to ensure the sealing performance of the valve.

[0049] S5, performance test: The three ports of the valve body are blocked simultaneously by the quick-blocking mechanism 5, and then high-temperature liquid and low-temperature liquid are introduced into the valve body in sequence under a specified pressure to perform a water pressure test and a large temperature difference change test simultaneously to check its sealing and strength.

[0050] S6. Component assembly: Assemble the valve body, valve cover, valve stem and sealing parts, and debug the assembled valve to ensure the flexible opening and closing of the valve.

[0051] The processing steps of the industrial valve in the above steps S1-S6 need to be completed by the gate platform 1, the clamping part 2, the switching part 3, the synchronous grinding mechanism 4 and the quick plugging mechanism 5.

[0052] A clamping part 2 is installed on the left part of the upper end surface of the gate-type platform 1, and a strip-shaped through groove is opened in the transverse section of the gate-type platform 1, and a switching part 3 is installed in the strip-shaped through groove. The switching part 3 includes a mounting rod frame 31, and a synchronous grinding mechanism 4 for simultaneously grinding and finishing the valve body sealing surface and the inner cavity wall is arranged on the left part of the mounting rod frame 31, and a quick blocking mechanism 5 for simultaneously blocking the three ports of the valve body for rapid sealing testing is arranged on the right part of the mounting rod frame 31. The switching part 3 is used to sequentially control the synchronous grinding mechanism 4 and the quick blocking mechanism 5 to contact the valve body respectively so as to quickly switch to apply different processing steps to the valve body. The clamping part 2 includes two mounting plates 21 which are symmetrically fixedly connected to the upper end surface of the gate-type platform 1 front and back, and the opposite sides of the two mounting plates 21 are slidably connected with arc-shaped clamping plates 23 through electric telescopic rods 22. The arc-shaped inner walls of the two arc-shaped clamping plates 23 are respectively fixedly connected with flexible layer pads, and the flexible layer pads are used to protect the arc-shaped clamping plates 23 when clamping the valve body to prevent damage to the galvanized layer on the surface of the valve body.

[0053] See also Figure 3 and Figure 4 In this embodiment, the switching part 3 also includes a turntable 32 rotatably connected to the rear groove wall of the strip through groove, the mounting rod frame 31 is embedded and fixedly connected in the turntable 32, the front end surface of the turntable 32 is fixedly connected to an arc-shaped guide frame 33 through a fixing column, the front groove wall of the strip through groove is fixedly connected to a stop column 35 slidably connected in the arc-shaped guide frame 33 through a leaf spring 34, and the arc-shaped grooves 36 cooperating with the support columns are symmetrically opened in the arc-shaped guide frame 33.

[0054] Before processing the valve body, first face the opening in the middle of it directly downward and then place it between the two arc-shaped clamping plates 23, then control the electric telescopic rod 22 to extend and drive the two arc-shaped clamping plates 23 to move closer to each other until the arc-shaped clamping plates 23 touch the outside of the valve body to clamp it, and when it is necessary to grind the sealing surface and cavity surface of the valve body, control the switching part 3 to operate and drive the synchronous grinding mechanism 4 to move to the outside of the valve body: manually or externally control the device to rotate the mounting rod frame 31, and the mounting rod frame 31 then drives the turntable 32 to rotate, and the turntable 32 then drives the arc-shaped guide frame 33 to slide outside the stop column 35, and when the synchronous grinding mechanism 4 is driven to the outside of the valve body, the arc-shaped guide frame 33 drives the arc-shaped groove 36 on the left to move to the position of the stop column 35, so that the arc-shaped groove 36 on the left is now engaged with the stop column 35, thereby limiting the moving mounting rod frame 31.

[0055] After the synchronous grinding mechanism 4 has completed the processing of the valve body, the mounting rod frame 31 is rotated manually or by an external control device, and the mounting rod frame 31 then drives the arc guide frame 33 to rotate through the turntable 32, so that the arc groove 36 is separated from the stop column 35, and then the mounting rod frame 31 is rotated 180 degrees to drive the synchronous grinding mechanism 4 to move away from the valve body, and the mounting rod frame 31 drives the quick plugging mechanism 5 to connect with the valve body, and the quick plugging mechanism 5 can be used to perform a sealing test on the valve body. After rotating 180 degrees, the mounting rod frame 31 drives the arc groove 36 located on the right to move to the left position and engage with the stop column 35, so that different processing steps of the valve body can be quickly switched. The valve body is always in the same position during the processing, eliminating the frequent handling and clamping steps, so that different processing steps can be seamlessly connected, thereby speeding up the processing speed of the valve body.

[0056] See also Figure 5 and Figure 6 In this embodiment, the synchronous grinding mechanism 4 includes a horizontal plate 41 fixedly connected to the lower end surface of the left part of the mounting rod frame 31, two vertical slide plates 42 symmetrically slidably connected to the horizontal plate 41, a bidirectional threaded rod 43 rotatably connected to the horizontal plate 41 and threadedly connected to the two vertical slide plates 42, mounting cylinders 44 respectively fixedly connected to the opposite sides of the vertical slide plates 42, a driving ring 45 rotatably connected to the outside of the mounting cylinder 44, a progressive grinding unit 46 jointly arranged on the mounting cylinder 44 and the driving ring 45 for gradually grinding the valve body sealing surface from rough to fine, and a self-deformation grinding unit 47 jointly arranged between the two mounting cylinders 44 for adaptively deforming according to the shape of the inner cavity of the valve body so as to fit on the inner cavity of the valve body.

[0057] See also Figure 6 , Figure 7 and Figure 8 The progressive grinding unit 46 includes a plurality of E-shaped frames 462 slidably connected to the outside of the driving ring 45 by connecting telescopic rods 461, a plurality of rotating columns 463 equidistantly connected to the E-shaped frames 462, grinding blocks 464 symmetrically fixedly connected to the outside of the rotating columns 463 by fixed blocks, and a driving assembly 465 arranged between the E-shaped frames 462 and the mounting cylinder 44 for driving the grinding blocks 464 to move so as to grind the sealing surface of the valve body. The roughness of a row of grinding blocks 464 away from the E-shaped frames 462 increases from the inside to the edge of the center of the mounting cylinder 44, and the roughness of a row of grinding blocks 464 close to the E-shaped frames 462 decreases from the inside to the edge of the center of the mounting cylinder 44.

[0058] See also Figure 7 and Figure 8The driving assembly 465 includes a No. 2 screw 4651 fixedly connected to the side of the E-shaped frame 462 close to the mounting cylinder 44, and the side of the mounting cylinder 44 away from the vertical slide 42 is fixedly connected to the end face gear ring 4652, and the No. 2 screw 4651 is externally threadedly connected to a gear ring 4653 meshing with the end face gear ring 4652. The side of the driving ring 45 away from the vertical slide 42 is equidistantly fixedly connected to a plurality of sliding rods 4654 corresponding to the E-shaped frame 462 through a connecting strip, and the end of the rotating column 463 is fixedly connected to a gear 4655, the sliding rod 4654 is equidistantly and slidably connected to a plurality of racks 4656 corresponding to and meshing with the gear 4655 on the outside, the rack 4656 is symmetrically and fixedly connected to a side close to the gear 4655 with a limiting bar 4657, and the two side end faces of the gear ring 4653 are respectively fixedly connected with limiting rings 8 for limiting themselves, and the gear ring 4653 is limited by the limiting rings 8 contacting the inner and outer walls of the end face gear ring 4652 to ensure that the gear ring 4653 is always meshed with the end face gear ring 4653.

[0059] After the synchronous grinding mechanism 4 is driven to move outside the valve body, the two-way threaded rod 43 is manually rotated to drive the two vertical slides 42 to move closer to each other, and the vertical slides 42 then drive the installation tube 44 to move closer to each other, and the installation tube 44 then drives the two progressive grinding units 46 in the horizontal direction to move closer to each other, until a row of grinding blocks 464 that are close to each other in the two progressive grinding units 46 touch the sealing surfaces on the left and right ends of the valve body, and then the self-driven driving ring 45 is controlled to rotate, and the driving ring 45 then drives the E-shaped frame 462 to rotate circumferentially by connecting the telescopic rod 461, and the E-shaped frame 462 then drives the No. 2 screw 4651 to rotate circumferentially, and during the circumferential rotation of the No. 2 screw 4651, it drives the gear ring 4653 to rotate on the end face gear ring 4652, and the gear ring 4653 rotates so that the No. 2 screw 4651 threadedly connected thereto moves away from The mounting tube 44 moves in the direction of the axis, and the No. 2 screw 4651 then drives the E-shaped frame 462 to move away from the mounting tube 44. The E-shaped frame 462 then drives the grinding block 464 to move away from the axis of the mounting tube 44. The grinding block 464 moves along the center of the mounting tube 44 toward the edge and rotates circumferentially with the drive ring 45, so that the sealing surface of the valve body can be polished. In addition, since the roughness of the grinding block 464 near the middle of the horizontal plate 41 gradually increases from the center of the mounting tube 44 to the edge, the valve body sealing surface can be initially polished with the grinding block 464 with a larger roughness, and then polished with the grinding block 464 with the next level of roughness, and finally polished with the grinding block 464 with a fine friction degree and the valve body sealing surface, that is, the valve body sealing surface is gradually polished from the inside to the outside with a roughness from coarse to fine.

[0060] When the grinding block 464 moves outward to separate from the valve body sealing surface, the driving ring 45 is controlled to rotate in the opposite direction. The driving ring 45 then drives the E-shaped frame 462 to rotate in the opposite direction through the connecting telescopic rod 461. The E-shaped frame 462 then drives the gear ring 4653 to rotate in the opposite direction along the end face gear ring 4652 through the No. 2 screw 4651. The gear ring 4653 rotates in the opposite direction and then drives the No. 2 screw 4651 to move toward the axis direction of the installation tube 44. The No. 2 screw 4651 is 651 then drives the E-shaped frame 462 to move, the E-shaped frame 462 then drives the rotating column 463 to move, the rotating column 463 then drives the gear 4655 to move and rotate on the rack 4656, and the gear 4655 then drives the rotating column 463 to rotate until the rotating column 463 rotates 180 degrees and drives the grinding block 464 near the E-shaped frame 462 to rotate to a position away from the E-shaped frame 462. At this time, the gear 4655 also moves to abut against the side near the mounting tube 44. The grinding block 464 is moved to the limit strip 4657 through the E-shaped frame 462, and then stops rotating. Then, the second screw 4651 pulls the grinding block 464 after the position adjustment through the E-shaped frame 462 to move toward the mounting tube 44 (the roughness arrangement of the grinding block 464 close to the valve body after rotation is as follows: the roughness gradually decreases from the circumference of the mounting tube 44 to the edge direction). Then, the grinding block 464 after the position adjustment is driven to contact the valve body sealing surface, and the grinding block 464 moves from the outside to the inside and rotates circumferentially at the same time, that is, the roughness of the valve body sealing surface is gradually polished from the outside to the inside and from coarse to fine, until the grinding block 464 is driven to move inward to the initial position, so that the valve body sealing can be gradually polished twice (for the galvanized layer and other anti-corrosion layers sprayed on the valve body sealing surface after the surface treatment, they are polished away when the grinding block 464 is polished, thereby ensuring the cleanliness and smoothness of the valve body sealing surface).

[0061] By gradually switching the grinding blocks 464 with different roughness from inside to outside and from coarse to fine, the surface quality of the valve body sealing surface can be gradually improved, thereby obtaining a smoother and more uniform surface. The design of automatically switching the grinding blocks 464 eliminates the tedious operation of frequently replacing the grinding blocks 464, and the need for frequent shutdowns also greatly shortens the downtime during the grinding process, thereby improving processing efficiency.

[0062] See also Figure 7 and Fig. 9In this embodiment, the self-deformable grinding unit 47 includes a No. 1 screw 471 fixedly connected to the cavity wall of the mounting tube 44 on one side close to the vertical slide plate 42, the No. 1 screw 471 is externally threadedly connected to a sleeve 472, the end of the sleeve 472 away from the mounting tube 44 is fixedly connected to a column 474 through a spring telescopic column 473, both ends of the column 474 are fixedly connected to elastic grinding strips 475, a sliding groove 476 is axially provided on the outside of the sleeve 472, and a side of the driving ring 45 away from the vertical slide plate 42 is fixedly connected to an L-shaped sliding strip 477 slidably connected to the sliding groove 476, a positioning hole 6 is provided on the right end surface of the elastic grinding strip 475 on the left, and an alignment column 7 cooperating with the alignment hole 6 is fixedly connected to the left end surface of the elastic grinding strip 475 on the right, and the opposite sides of the two elastic grinding strips 475 facing each other are arc-shaped with a concave middle part.

[0063] When the two mounting tubes 44 move toward each other, they will also drive the two elastic grinding strips 475 in the horizontal direction to move toward each other. When the grinding block 464 is driven to contact the sealing surface of the valve body, the elastic grinding strip 475 in the horizontal direction also fully extends into the inner cavity of the valve body. At this time, the elastic grinding strip 475 is located at the inner wall of the inner cavity of the columnar section in the valve body. Then, when the driving ring 45 rotates, it will also drive the L-shaped slide 477 to rotate. The L-shaped slide 477 then drives the sleeve 472 to rotate through the sliding groove 476. The sleeve 472 rotates and interacts with the No. 1 screw 471 threadedly connected to it to move, so that the two sleeves 472 move toward each other. The sleeve 472 then drives the elastic grinding strip 475 to rotate on the inner cavity wall of the valve body through the spring telescopic column 473 and the column rod 474. When the spring grinding strip rotates, it moves toward the middle of the inner cavity of the valve body, thereby grinding the inner cavity wall of the columnar section of the valve body.

[0064] When the opposite ends of the lateral elastic polishing strip 475 move to the middle position of the valve body, the lateral elastic polishing strip 475 drives the alignment column 7 and the alignment hole 6 to be plugged into each other, so that the two lateral elastic polishing strips 475 are docked together, and then the sleeve 472 continues to move toward the middle of the valve body, and presses on the elastic polishing strips 475 docked together, so that the elastic polishing strip 475 concave in the middle can be deformed and gradually arch outward until the two elastic polishing strips 475 docked together become semi-arc-shaped and fit on the inner cavity wall of the spherical section in the middle of the valve body. At this time, the two sleeves 472 continue to move toward each other, and the spring telescopic column 473 begins to be compressed. Then the elastic polishing strip 475 that continues to rotate after deformation rotates circumferentially to polish the inner cavity of the valve body.

[0065] When the grinding block 464 is moved from the inside to the outside to grind the valve body sealing surface, the elastic grinding strip 475 also grinds the inner cavity of the valve body. Then, while the drive ring 45 rotates in the opposite direction, the sleeve 472 is driven by the L-shaped slide bar 477 and the slide groove 476 to rotate in the opposite direction and reset. The sleeve 472 then interacts with the No. 1 screw 471 to move toward the vertical slide plate 42. The sleeve 472 then drives the elastic grinding strip 475 to move toward the vertical slide plate 42 until the elastic grinding strip 475 is driven to move to the initial position.

[0066] The elastic grinding strip 475 automatically adapts to the different deformations of the inner cavity of the valve body, ensuring close contact with the inner cavity wall of the valve body during the entire grinding process. The entire inner cavity wall can be evenly polished, thereby improving the grinding quality and smoothness, ensuring the uniformity of the inner cavity wall surface, and ensuring that all surfaces are evenly polished, thereby eliminating grinding dead corners.

[0067] See also Figure 3 and Fig.10 In this embodiment, the quick blocking mechanism 5 includes a door-shaped frame 51 fixedly connected to the right part of the mounting rod frame 31, and the lower end surface of the transverse section of the door-shaped frame 51 is slidably connected to a mounting ring 53 through a spring telescopic support 52, and the inner wall of the mounting ring 53 is fixedly connected to a butt pipe 54 that slides through the transverse wall plate of the door-shaped frame 51, and the two vertical sections of the door-shaped frame 51 are slidably connected to sliding columns 55, and the opposite ends of the two sliding columns 55 are fixedly connected to a blocking plate 56, and the lower end surface of the transverse section of the door-shaped frame 51 is symmetrically slidably connected to a sliding bar 57, and a connecting rod 58 is hinged between the mounting ring 53 and the sliding bar 57, and the left and right opposite sides of the door-shaped frame 51 are respectively hinged with a two-way telescopic rod 59 through a connecting rod, and the upper end of the two-way telescopic rod 59 is hinged to the sliding bar 57, and the lower end of the two-way telescopic rod 59 is hinged to the sliding column 55.

[0068] The initial position of the door frame 51 is located at the right part. The rotation of the mounting rod frame 31 in the switching part 3 drives the synchronous grinding mechanism 4 to move away from the valve body, and at the same time drives the door frame 51 to rotate clockwise from the initial position until the door frame 51 rotates to the position directly below the valve body. Then the mounting rod frame 31 drives the door frame 51 to move upward, and the door frame 51 drives the butt joint 54 to move upward through the mounting ring 53, so that the butt joint 54 moves upward and contacts the outer wall of the middle part of the valve body and is connected to the opening of the middle part of the valve body directly downward. The butt joint 54 is pushed downward and drives the mounting ring 53 to move. The mounting ring 53 then pushes the slide bar 57 to move through the connecting rod 58, so that the slide bar 57 moves toward The sliding bar 57 then drives the two-way telescopic rod 59 to rotate around the hinge with the connecting rod during the rotation of the two-way telescopic rod 59, and drives the sliding column 55 hinged to the other end thereof to move, so that the two sliding columns 55 move closer to each other, and the sliding column 55 then drives the blocking plate 56 to move closer to each other until the blocking plate 56 moves and touches the two sealing surfaces of the valve body respectively, thereby blocking the three ports of the valve body at the same time, and then liquid is introduced into the butt-joint pipe 54, and the liquid flows into the valve body through the butt-joint pipe 54. At the same time, the valve body is continuously pressurized to observe whether there is water seeping out of the surface of the valve body, so as to complete the air tightness test of the valve body.

[0069] By blocking multiple ports at the same time, the operation of adjusting the blocking positions one by one is eliminated, which greatly shortens the test preparation time and makes the entire sealing test process more efficient. At the same time, blocking can ensure that the blocking force applied to each port is consistent, avoiding uneven force caused by blocking one by one, thereby improving the accuracy and reliability of the test results.

[0070] In the description of the present invention, it is to be understood that the terms “center”, “longitudinal”, “lateral”, “length”, “width”, “thickness”, “up”, “down”, “front”, “back”, “left”, “vertical”, “horizontal”, “top”, “bottom”, “inside”, “outside”, “clockwise”, “counterclockwise”, “axial”, “radial”, “circumferential”, etc., indicating orientations or positional relationships are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0071] In addition, the terms "first", "second", "number one", "number two" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first", "second", "number one", "number two" may explicitly or implicitly include at least one of the features. In the description of the present invention, the meaning of "multiple" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0072] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0073] The embodiments of this specific implementation method are all preferred embodiments of the present invention, and are not intended to limit the protection scope of the present invention. Therefore, all equivalent changes made based on the structure, shape, and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A processing technology for industrial valves, characterized by: The specific processing steps of industrial valves are as follows: S1. Casting: melt the metal and cast it into the mold, and after cooling, form the initial shape of each valve component to obtain the required blank; S2. Heat treatment: eliminate the internal stress generated during casting or forging and improve the mechanical properties of the material; S3. Surface treatment: Polish the outer surface of the valve to improve the appearance quality and reduce the friction resistance when the medium flows. According to the use environment of the valve, zinc plating, chrome plating or nickel plating is performed on the surface to enhance the corrosion resistance. S4, fine processing of sealing surface and cavity surface: the inner cavity and sealing surface of the valve body are finely processed simultaneously by a synchronous grinding mechanism (4) to ensure the sealing performance of the valve; S5, performance test: The three ports of the valve body are blocked simultaneously by the quick-blocking mechanism (5), and then high-temperature liquid and low-temperature liquid are introduced into the valve body in sequence under a specified pressure to simultaneously perform a water pressure test and a large temperature difference change test to check its sealing performance and strength; S6. Assembly of components: Assemble the valve body, valve cover, valve stem and seal components, and debug the assembled valve to ensure the valve can be opened and closed flexibly; The processing steps of the industrial valve in the above steps S1-S6 need to be completed by the door-type platform (1), the clamping part (2), the switching part (3), the synchronous grinding mechanism (4) and the quick plugging mechanism (5); wherein: A clamping portion (2) is installed on the left part of the upper end surface of the gate-shaped platform (1); a strip-shaped through groove is opened in the transverse section of the gate-shaped platform (1); a switching portion (3) is installed in the strip-shaped through groove; the switching portion (3) comprises a mounting rod frame (31); a synchronous grinding mechanism (4) for simultaneously grinding and finishing the valve body sealing surface and the inner cavity wall is arranged on the left part of the mounting rod frame (31); a quick plugging mechanism (5) for simultaneously blocking the three ports of the valve body to facilitate rapid sealing testing is arranged on the right part of the mounting rod frame (31); the switching portion (3) is used to sequentially control the synchronous grinding mechanism (4) and the quick plugging mechanism (5) to contact the valve body respectively so as to facilitate rapid switching to apply different processing steps to the valve body; The synchronous grinding mechanism (4) comprises: A transverse plate (41) is fixedly connected to the lower end surface of the left portion of the mounting rod frame (31), two vertical slide plates (42) are symmetrically slidably connected to the transverse plate (41), a bidirectional threaded rod (43) is rotatably connected to the transverse plate (41) and is threadedly connected to the two vertical slide plates (42), a mounting cylinder (44) is respectively fixedly connected to the opposite sides of the vertical slide plates (42), a driving ring (45) is rotatably connected to the outside of the mounting cylinder (44), a progressive grinding unit (46) is jointly arranged on the mounting cylinder (44) and the driving ring (45) for gradually grinding the sealing surface of the valve body from rough to fine, and a self-deformation grinding unit (47) is jointly arranged between the two mounting cylinders (44) for adaptively deforming according to the shape of the inner cavity of the valve body so as to fit on the inner cavity of the valve body; The progressive grinding unit (46) comprises: a plurality of E-shaped frames (462) slidably connected to the outside of the driving ring (45) by connecting telescopic rods (461), a plurality of rotating columns (463) equidistantly connected to the E-shaped frames (462), a grinding block (464) symmetrically fixedly connected to the outside of the rotating column (463) by a fixing block, and a driving assembly (465) arranged between the E-shaped frames (462) and the mounting cylinder (44) for driving the grinding block (464) to move so as to grind the sealing surface of the valve body; The roughness of the grinding blocks (464) in a row away from the E-shaped frame (462) increases from the center of the mounting tube (44) to the edge, while the roughness of the grinding blocks (464) in a row close to the E-shaped frame (462) decreases from the center of the mounting tube (44) to the edge.

2. The processing technology of an industrial valve according to claim 1 is characterized in that: The self-deformable grinding unit (47) includes a No. 1 screw (471) fixedly connected to the cavity wall of the mounting tube (44) on one side close to the vertical slide plate (42); the No. 1 screw (471) is externally threadedly connected to a sleeve (472); the end of the sleeve (472) away from the mounting tube (44) is fixedly connected to a column (474) via a spring telescopic column (473); both ends of the column (474) are fixedly connected to elastic grinding strips (475); a sliding groove (476) is axially provided on the outside of the sleeve (472); and the side of the drive ring (45) away from the vertical slide plate (42) is fixedly connected to an L-shaped sliding strip (477) slidably connected to the sliding groove (476).

3. The processing technology of an industrial valve according to claim 2 is characterized in that: The right end surface of the elastic grinding strip (475) located at the left portion is provided with an alignment hole (6), and the left end surface of the elastic grinding strip (475) located at the right portion is fixedly connected with an alignment post (7) that matches the alignment hole (6).

4. The processing technology of an industrial valve according to claim 1 is characterized in that: The driving assembly (465) comprises a No. 2 screw rod (4651) fixedly connected to a side of the E-shaped frame (462) close to the mounting tube (44); the mounting tube (44) is fixedly connected to an end face gear ring (4652) on a side away from the vertical slide plate (42); the No. 2 screw rod (4651) is externally threadedly connected to a gear ring (4653) meshing with the end face gear ring (4652); a side of the driving ring (45) away from the vertical slide plate (42) is circumferentially equidistantly fixedly connected to a plurality of sliding rods (4654) corresponding to the E-shaped frame (462) via connecting strips; a gear (4655) is fixedly connected to the end of the rotating column (463); a plurality of racks (4656) corresponding to and meshing with the gears (4655) are equidistantly slidably connected to the outside of the sliding rod (4654); a side of the racks (4656) close to the gears (4655) is symmetrically fixedly connected to a limiting strip (4657).

5. The processing technology of an industrial valve according to claim 4 is characterized in that: The two side end surfaces of the gear ring (4653) are respectively fixedly connected with limiting rings (8) for limiting the position of the gear ring.

6. The processing technology of an industrial valve according to claim 1 is characterized in that: The switching part (3) also includes a turntable (32) rotatably connected to the rear groove wall of the strip through groove, the mounting rod frame (31) is embedded and fixedly connected to the turntable (32), the front end surface of the turntable (32) is fixedly connected to an arc-shaped guide frame (33) via a fixing column, the front groove wall of the strip through groove is fixedly connected to a stop column (35) slidably connected to the arc-shaped guide frame (33) via a leaf spring (34), and the arc-shaped guide frame (33) is symmetrically provided with an arc-shaped groove (36) cooperating with the support column.

7. The processing technology of an industrial valve according to claim 1 is characterized in that: The quick blocking mechanism (5) comprises a door-shaped frame (51) fixedly connected to the right part of the mounting rod frame (31); the lower end surface of the transverse section of the door-shaped frame (51) is slidably connected to a mounting ring (53) via a spring telescopic support (52); the inner wall of the mounting ring (53) is fixedly connected to a butt-jointed pipe (54) that slides through the transverse wall plate of the door-shaped frame (51); two vertical sections of the door-shaped frame (51) are respectively slidably connected to sliding columns (55); the two sliding columns (55) are mutually The opposite ends are fixedly connected with a blocking plate (56), the lower end surface of the transverse section of the door-shaped frame (51) is symmetrically slidably connected with a sliding bar (57), a connecting rod (58) is hinged between the mounting ring (53) and the sliding bar (57), and the left and right opposite sides of the door-shaped frame (51) are respectively hinged with a two-way telescopic rod (59) through a connecting rod, the upper end of the two-way telescopic rod (59) is hinged with the sliding bar (57), and the lower end of the two-way telescopic rod (59) is hinged with the sliding column (55).

8. The processing technology of an industrial valve according to claim 1 is characterized in that: The clamping portion (2) comprises two mounting plates (21) symmetrically fixedly connected to the upper end surface of the door-shaped platform (1) in a front-to-back manner, and the opposite sides of the two mounting plates (21) are slidably connected to arc-shaped clamping plates (23) via electric telescopic rods (22), and the arc-shaped inner walls of the two arc-shaped clamping plates (23) are respectively fixedly connected to flexible layer pads.

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