Novel forged steel gate valve universal matching process and method

Abstract

The invention provides a novel forged steel gate valve universal matching process and method, and belongs to the technical field of gate valve machining. Comprising the following steps that S1, firstly, surfacing is conducted on a valve seat sealing face, then finish turning is conducted on the valve seat sealing face, then the valve seat sealing face is ground, and finally a valve seat and a valve body are welded; s2, when the sealing surface of the valve seat is ground, the valve seat is firstly put into a grinding device I, and the moving distance of an extension rod is adjusted through a wrench. According to the valve seat grinding device, the grinding thickness is accurately controlled, the accuracy is improved, meanwhile, loss of parts is avoided, the product quality is guaranteed, the production efficiency is improved, loss caused by misoperation or inaccurate adjustment is reduced, the grinding accuracy is improved, one surface of a valve seat is smoother, the grinding effect is improved, and the service life of the valve seat is prolonged. Influences caused by excessive grinding and insufficient grinding are avoided, the grinding efficiency of the second valve seat is improved, errors are avoided, the replacement cost is reduced, and the production efficiency of the second valve seat is improved.

Description

Technical Field

[0001] The invention relates to the technical field of gate valve processing, and in particular to a novel forged steel gate valve universal matching process and method. Background Art

[0002] Forged steel wedge gate valve uses a V-shaped wedge gate and an angled valve seat on both sides of the valve body channel to form a sealing pair. The sealing principle is to achieve sealing by the tight combination of the two sealing surfaces on the wedge gate and the two sealing surfaces on the valve seat when wedged in. When processing the wedge gate valve seat and gate sealing surface, the accuracy and symmetry of the inclination of the two sealing surfaces must be guaranteed. Their processing accuracy directly affects the sealing and performance of the valve.

[0003] The gate valve grinding device is a device specially used for grinding the sealing surface of the gate valve. This device is widely used in oil refining, natural gas and other industries that require precise control of fluids. When the gate valve is in use, the surface needs to be ground to achieve a sealed state and avoid problems such as sticking or wear. The purpose of grinding is to polish the valve sealing surface and eliminate surface wear and pits to achieve a good sealing effect.

[0004] The existing valve grinding device is prone to deviation and shaking during the grinding process. Since the workpiece is small, it is difficult to accurately control the grinding thickness, resulting in deviations from the target size specifications, causing parts loss and affecting the subsequent use of the valve seat. In addition, it is difficult to ensure that the grinding block is always in close contact with the valve seat during the grinding process. Sometimes the grinding does not meet the requirements, reducing production efficiency. In addition, some areas of the valve seat may be insufficiently ground due to lack of grinding fluid, which will affect its sealing performance in the later stage and even cause rework, delaying the operation time and incurring additional replacement costs.

[0005] At the same time, the existing forged steel gate valve seat and gate plate have poor versatility, rely on manual grinding and matching, are greatly affected by workers' skills, and have low production efficiency.

[0006] Therefore, the present application provides a new forged steel gate valve universal matching process and method to meet the needs. Summary of the invention

[0007] The technical problem to be solved by the present invention is to provide a new forged steel gate valve universal matching process and method to solve the problem that the existing valve grinding device is difficult to accurately control the grinding thickness during operation, resulting in deviations from the target size specifications, causing loss of parts, affecting the subsequent use of the valve seat, and some areas of the valve seat will lack grinding fluid, which will affect its sealing performance in the later stage and even cause rework, delaying operation time, and incurring additional replacement costs.

[0008] In order to solve the above technical problems, the present invention provides the following technical solutions: a new type of forged steel gate valve universal matching process, comprising the following steps:

[0009] S1: First, weld the valve seat sealing surface, then finish-machine the valve seat sealing surface, then grind the valve seat sealing surface, and finally weld the valve seat to the valve body;

[0010] S2: When grinding the valve seat sealing surface, first put the valve seat into the grinding device 1, adjust the moving distance of the extension rod by the wrench, so that the stop block drives the rubber pad to clamp and position the valve seat, and the position sensor and height sensor transmit the identification back to the control center;

[0011] S3: Then adjust the lifting height of the motor cavity so that the grinding head fits the surface of the valve seat. After the grinding block fits the inner wall of the valve seat, start the servo motor to rotate intermittently, so that the first gravity ball and the second gravity ball can evenly apply force to the extrusion cap, so that the grinding can be more precise.

[0012] S4: After the valve seat has been ground once, the motor cavity is rotated so that the oil cavity intermittently sprays the grinding liquid on the surface and inner wall of the valve seat. After spraying, the motor cavity is turned over to make the grinding device one and grind the valve seat again.

[0013] Optionally, the grinding device 1 in S4 further comprises a vehicle body, a bracket 1 is installed on the top of the vehicle body, a guide rail is installed on one side of the bracket 1, a sliding seat is slidably connected to the surface of the guide rail, a motor cavity is installed on the surface of the sliding seat, a control center is installed on one side of the sliding seat, a servo motor 1 is installed inside the motor cavity, a drive motor is also installed inside the motor cavity, and a rotating ring is installed at the bottom of the vehicle body;

[0014] A clamping and positioning component, the clamping and positioning component is installed on the top of the vehicle body, and the clamping and positioning component is used to clamp and position the valve seat 1 and feed back the position data of the valve seat 1;

[0015] A force-controlled grinding assembly, which is installed at the bottom of the motor cavity, and grinds the upper and lower surfaces and the inner wall of the valve seat simultaneously, and can evenly apply force to the grinding head during grinding;

[0016] An oil spraying assembly, the oil spraying assembly is installed on the top of the motor cavity, and the oil spraying assembly is used to spray grinding liquid on the ground valve seat;

[0017] The clamping and positioning assembly is installed at the bottom of the force-controlled grinding assembly, and the force-controlled grinding assembly is installed at the bottom of the oil spraying assembly.

[0018] Optionally, the clamping and positioning assembly includes a base, the base is installed on the top of the vehicle body, a stretching rod is inserted into the interior of the base, a movable bolt is installed on the top of the base, and a wrench is installed on the top of the movable bolt.

[0019] Optionally, a stop block is installed at one end of the extension rod, a rubber pad is installed at the front end of the stop block, a height sensor is installed at one end of the base, a position sensor is installed on the inner wall of the rotating ring, and a valve seat is provided at one end of the rubber pad.

[0020] Optionally, the force-controlled grinding assembly includes a driving rod, a first force-controlled cavity is installed at the bottom of the driving rod, a rotating sleeve is installed at the bottom of the first force-controlled cavity, a second force-controlled cavity is installed at the bottom of the rotating sleeve, a grinding cavity is installed at the bottom of the second force-controlled cavity, and a stepped gear groove is installed on the surface of the rotating sleeve.

[0021] Optionally, a stopper is provided on the surface of the step-type gear slot, a first gravity ball is provided on the top of the step-type gear slot, a piston tube is installed at the bottom of the step-type gear slot, an extrusion cap is installed on the surface of the step-type gear slot, an elastic rod is installed at the bottom of the extrusion cap, a grinding head is installed at the bottom of the elastic rod, and a pull rope is installed at one end of the first gravity ball.

[0022] Optionally, a conical baffle block is arranged inside the first force control chamber, a second gravity ball is arranged on the surface of the conical baffle block, one end of the second gravity ball is connected to the pull rope, a compression beam is arranged on the top of the rotating sleeve, a guide rod is installed inside the piston tube, and a rotating frame is installed at one end of the guide rod.

[0023] Optionally, a grinding block is installed at one end of the rotating frame, a rack is installed at the bottom of the guide rod, the surface of the rack is meshed with a cylindrical gear, one end of the cylindrical gear is meshed with an inner and outer toothed plate, one end of the inner and outer toothed plate is meshed with a gear, one end of the gear is meshed with a toothed transmission plate, and one end of the toothed transmission plate is slidably connected to a slide groove.

[0024] Optionally, the oil spray assembly includes a rotating rod, which is installed at one end of the motor cavity, an operating cavity is installed on the surface of the rotating rod, an oil cavity is installed at the bottom of the operating cavity, a spray cavity tube is installed at the bottom of the oil cavity, a spray head is installed inside the spray cavity tube, a wedge swivel seat is installed at the bottom of the rotating rod, a release connecting rod is rotatably connected to the bottom of the wedge swivel seat, a toggle plate is installed at the bottom of the release connecting rod, a baffle cap is installed at the top of the toggle plate, a piston tamping rod is installed at the bottom of the baffle cap, a sleeve is sleeved on the surface of the piston tamping rod, a spray head is installed at the bottom of the sleeve, a pull rod is also installed at the bottom of the wedge swivel seat, a tube cavity is installed at one end of the pull rod, and the tube cavity is inserted into the inside of the spray cavity tube.

[0025] The present application also provides another technical solution: a novel forged steel gate valve universal matching method, comprising the following steps:

[0026] Processing of valve seat 2:

[0027] S1, turning outer circle and inner hole;

[0028] Blank measurement: measure the structure length and calculate the machining allowance;

[0029] Workpiece clamping: Use the second end face and outer circle of the valve seat as reference for positioning, lock the three-jaw chuck to clamp the second valve seat, and turn the outer circle and inner hole of the second valve seat after the workpiece is clamped;

[0030] S2, rough turning the end face;

[0031] Blank measurement: locate with inner hole, and rough turn the end face of the big head to meet the requirements of the drawing;

[0032] Workpiece clamping: Position the second valve seat based on the outer circle and end face of the stopper, align the second end face of the valve seat, clamp the workpiece and turn the second surface of the valve seat to be welded;

[0033] S3, welding sealing surface;

[0034] Blank measurement: measure the groove depth and calculate the surfacing allowance;

[0035] Workpiece clamping: Place the valve seat 2 on the special tooling with the outer circle of the diameter stop as the positioning reference, and align the surface of the valve seat 2 to be welded first;

[0036] S4, fine turning sealing surface:

[0037] Blank measurement: measure the structure length and calculate the machining allowance;

[0038] Workpiece clamping: Position the second valve seat based on the outer circle and end face of the stopper, align the second end face of the valve seat, clamp the workpiece and turn the second surface of the valve seat to be welded;

[0039] S5. Heat treatment:

[0040] Quenching: only the sealing surface area is heated, hardness: 26-34HRC;

[0041] S6. Use grinding device 1 or grinding device 2 and positioning plate device to grind the sealing surface in batches; ensure the grinding angle is 5° and the roughness is consistent, ensure the downward pressure is consistent, control the grinding speed and duration, and add or replace the abrasive regularly;

[0042] Processing of gate:

[0043] S7, forging gate blank; forging until the outer dimensions meet the requirements of the drawing;

[0044] S8, milling T-slot;

[0045] Blank measurement: measure the structure length and calculate the machining allowance;

[0046] Workpiece clamping: Use a four-jaw chuck to clamp one end of the workpiece, and then milling is performed after the workpiece is clamped;

[0047] S9, rough turning of sealing surface;

[0048] Blank measurement: measure the structure length and calculate the machining allowance;

[0049] Workpiece clamping: Use special tooling to clamp the workpiece, and then turn it;

[0050] S10, dense welding sealing surface: TIG welding;

[0051] Blank measurement: measure the groove depth and calculate the surfacing allowance;

[0052] Workpiece clamping: Place the gate plate horizontally on a special fixture with one side as the reference plane, and weld the other side;

[0053] S11, fine turning sealing surface:

[0054] Blank measurement: measure the structure length and calculate the machining allowance;

[0055] Workpiece clamping: Use special tooling to clamp the workpiece, and then turn it;

[0056] S12, using grinding device 1 or grinding device 2 and positioning plate device, batch grinding sealing surface: ensure grinding angle 5° and roughness, ensure consistent downward pressure, control grinding speed and duration, and add or replace abrasive regularly;

[0057] S13. After the valve seat 2 is assembled to the valve body, the valve plate is assembled with the valve seat 2; the scale line of the valve seat 2 must be vertically upward, and the angles of the two valve seats 2 must be consistent.

[0058] Optionally, the grinding device 2 and the positioning disk device in S6 and S12 also include a cylindrical grinder hopper, a step hole is provided in the middle of the grinder hopper, a disc-shaped positioning plate is placed on the step hole, a grinding disk is provided below the step hole, a through hole is provided in the middle of the grinder hopper, a central axis is provided in the center of the grinding disk, the central axis passes through the through hole in the center of the grinder hopper and is connected to the motor shaft below the grinder hopper, a plane bearing is installed on the lower side of the grinder hopper, the plane bearing is fixed on the bracket 2, and a Three evenly distributed power wheels are in contact with the outside of the grinder hopper and drive the grinder hopper to rotate. A plurality of circular holes are arranged in the middle of the positioning plate, and a retaining ring is fixed on the outside of the top surface of the circular hole. Three pressure plates are arranged between the positioning plate and the grinder hopper to press and fix the two. The positioning plate rotates in opposite directions to the grinding disc. When grinding, the gate plate is clamped at one end of a cylindrical pressure block, and then put into the circular hole in the middle of the positioning plate for grinding. When grinding the valve seat, the retaining ring on the upper side of the circular hole of the positioning plate is removed, and the valve seat is directly put into the circular hole in the middle of the positioning plate, and a steel ball is placed on it as a pressure block.

[0059] Compared with the prior art, the present invention has at least the following beneficial effects:

[0060] In the above scheme, Example 1 of the present invention sets a clamping and positioning component, and utilizes the cooperation between the base, extension rod, movable bolt, wrench, block, rubber pad, position sensor, height sensor and valve seat 1, so that the valve seat 1 can be quickly positioned by the block, and rotating the wrench will cause the extension rod to quickly clamp the valve block. In addition, the position of the valve seat 1 and the thickness required to be ground are counted through the position sensor and the height sensor, and fed back to the control center to accurately control the grinding thickness, increase the accuracy, avoid the loss of parts, ensure the quality of the product, and improve the production efficiency.

[0061] Embodiment 1 of the present invention sets up a force-controlled grinding assembly, and utilizes a driving rod, a first force-controlled chamber, a second force-controlled chamber, a grinding chamber, a rotating sleeve, a stepped gear slot, a piston tube, a first gravity ball, an extrusion cap, an elastic rod, a grinding head, a pull rope, a second gravity ball, a conical baffle block, a pressure beam, a guide rod, a rotating frame, a grinding block, a rack, a cylindrical gear, an inner and outer toothed plate, a gear, a toothed transmission plate and a slide groove, so that when the valve seat 1 is ground, the first and second gravity balls exert uniform and stable pressure on the grinding block through their own gravity, and this uniform pressure distribution can ensure that the grinding block and the valve seat 1 are in full and uniform contact, thereby avoiding local over-grinding or under-grinding, and the use of the gravity ball simplifies the adjustment and centering operations during the grinding process, reduces the loss caused by improper operation or inaccurate adjustment, improves the grinding accuracy, and makes the surface of the valve seat 1 smoother and flatter, thereby improving the grinding effect.

[0062] Embodiment 1 of the present invention sets an oil spraying assembly, utilizes a rotating rod, an operating chamber, an oil chamber, a spray chamber tube, a spray head, a wedge swivel seat, a release connecting rod, a toggle plate, a sleeve, a baffle cap, a spray head, a piston ram, a pull rod and a tube chamber, so that the oil chamber can be rotated to quickly spray the grinding liquid on the valve seat 1, and through the rotation of the wedge swivel seat, the grinding liquid in the oil chamber can be intermittently sprayed on the inner wall and surface of the valve seat 1, thereby ensuring uniform distribution of the grinding liquid, avoiding the effects of over-grinding and under-grinding, improving grinding efficiency, avoiding mistakes, reducing replacement costs, and improving production efficiency.

[0063] In Example 2 of the present invention, the valve seat 2 and the gate plate are grinded in batches by machines. The installation is not affected by the workers' technical level. The valve seat 2 and the gate plate do not need to be grinded manually. Inexperienced employees can quickly get started after simple training. The present invention can improve production efficiency, reduce labor costs, and have a high pass rate for one-time assembly pressure testing. The valve seat 2 and the gate plate are produced in batches separately, and the process of matching the plates with each other is no longer considered. This solves the matching problem that has long plagued factories, saves costs, and shortens the production cycle. BRIEF DESCRIPTION OF THE DRAWINGS

[0064] The accompanying drawings, which are incorporated herein and constitute a part of the specification, illustrate embodiments of the invention and, together with the description, further serve to explain the principles of the invention and to enable those skilled in the relevant art to make and use the invention.

[0065] Figure 1 This is a schematic diagram of a main perspective structure of a grinding device in Example 1 of the present invention;

[0066] Figure 2 This is a schematic diagram of a planar structure of a grinding device in Example 1 of the present invention;

[0067] Figure 3 It is a schematic diagram of the three-dimensional structure of the grinding device in Embodiment 1 of the present invention from another viewing angle;

[0068] Figure 4 It is a three-dimensional structural schematic diagram of the positional relationship of the clamping and positioning assembly, the force-controlled grinding assembly, and the oil spraying assembly in Example 1 of the present invention;

[0069] Figure 5 This is a schematic diagram of the three-dimensional structure of the clamping and positioning assembly in Example 1 of the present invention;

[0070] Figure 6 In Example 1 of the present invention Figure 5 A magnified view of middle;

[0071] Figure 7 This is a schematic diagram of the three-dimensional structure of the force-controlled grinding assembly in Example 1 of the present invention;

[0072] Figure 8 In Example 1 of the present invention Figure 7 Enlarged view of middle B;

[0073] Fig. 9 This is a schematic diagram of the three-dimensional structure of the guide rod in Example 1 of the present invention;

[0074] Fig.10 This is a three-dimensional structural schematic diagram of the positional relationship between the motor cavity and the rotating rod in Example 1 of the present invention;

[0075] Fig.11 This is a schematic diagram of processing a valve seat in Example 2 of the present invention;

[0076] Fig.12 This is a schematic diagram of gate processing in Example 2 of the present invention;

[0077] Fig.13 This is a schematic diagram of the structure of a grinding machine in Example 2 of the present invention;

[0078] Fig.14 In Example 2 of the present invention Figure 3 A top view schematic diagram of

[0079] Fig.15 This is a schematic diagram of a valve seat clamp in Example 2 of the present invention;

[0080] Fig.16 This is a schematic diagram of gate clamping in Example 2 of the present invention;

[0081] Fig.17 This is a schematic diagram of the installation structure of the gate plate and the pressure block in Example 2 of the present invention.

[0082] Reference numerals:

[0083] 1. Car body; 2. Bracket 1; 3. Guide rail; 4. Sliding swivel seat; 5. Control center; 6. Clamping and positioning assembly; 61. Base; 62. Extension rod; 63. Active bolt; 64. Wrench; 65. Block; 66. Rubber pad; 67. Position sensor; 68. Height sensor; 69. Valve seat 1; 7. Force control grinding assembly; 71. Drive rod; 72. First force control chamber; 73. Second force control chamber; 74. Grinding chamber; 75. Rotating sleeve; 76. Step-type gear slot; 77. Piston tube; 78. First gravity ball; 79. Extrusion cap; 710. Elastic rod; 711. Grinding head; 712. Pull rope; 713. Second gravity ball; 714. Conical block; 715. Pressure beam; 716. Guide rod; 717. Rotating frame; 718. Grinding block; 719. Rack; 720. Column gear; 7 21. Internal and external toothed plates; 722. gears; 723. toothed transmission plates; 724. slideways; 8. oil spraying components; 81. rotating rod; 82. operating chamber; 83. oil chamber; 84. spray chamber pipe; 85. spray head; 86. wedge block swivel seat; 87. tripping connecting rod; 88. toggle plate; 89. sleeve; 810. stop cap; 811. spray head; 812. piston ram; 813. pull rod; 8 14. Tube cavity; 9. Motor cavity; 10. Rotating ring; 11. Servo motor one; 12. Driving motor; 100. Positioning plate; 101. Retaining ring; 102. Gate; 103. Pressing block; 104. Grinding disc; 105. Power wheel; 106. Valve seat two; 107. Steel ball; 108. Grinder hopper; 109. Bearing; 110. Servo motor two; 112. Bracket two; 113. Pressing plate.

[0084] As shown in the figure, in order to clearly implement the structure of the embodiment of the present invention, specific structures and devices are marked in the figure, but this is only for illustrative purposes and is not intended to limit the present invention to the specific structure, device and environment. According to specific needs, ordinary technicians in this field can adjust or modify these devices and environments. DETAILED DESCRIPTION

[0085] The following is a detailed description of a novel forged steel gate valve universal matching process and method provided by the present invention in conjunction with the accompanying drawings and specific embodiments. At the same time, it is explained here that in order to make the embodiments more detailed, the following embodiments are the best and preferred embodiments, and those skilled in the art may also adopt other alternatives to implement some known technologies; and the accompanying drawings are only for a more specific description of the embodiments, and are not intended to specifically limit the present invention.

[0086] It should be noted that the references to "one embodiment", "an embodiment", "an exemplary embodiment", "some embodiments" and the like in the specification indicate that the embodiments described may include specific features, structures or characteristics, but not every embodiment may include the specific features, structures or characteristics. In addition, when a specific feature, structure or characteristic is described in conjunction with an embodiment, it should be within the knowledge of a person skilled in the art to implement such feature, structure or characteristic in conjunction with other embodiments (whether or not explicitly described).

[0087] In general, a term can be understood, at least in part, from its use in context. For example, depending, at least in part, on the context, the term "one or more" as used herein can be used to describe any feature, structure, or characteristic in the singular sense, or can be used to describe a combination of features, structures, or characteristics in the plural sense. Additionally, the term "based on" can be understood as not necessarily intended to convey an exclusive set of factors, but can instead, depending, at least in part, on the context, allow for the presence of other factors that are not necessarily explicitly described.

[0088] Embodiment 1:

[0089] Embodiment 1 of the present invention provides a novel forged steel gate valve universal fitting process, comprising the following steps:

[0090] S1: First, the sealing surface of the valve seat 69 is surfacing-welded, then the sealing surface of the valve seat 69 is precision-machined, then the sealing surface of the valve seat 69 is ground, and finally the valve seat 69 is welded to the valve body;

[0091] S2: When grinding the sealing surface of the valve seat 69, first put the valve seat 69 into the valve seat grinding device, adjust the moving distance of the extension rod 62 by the wrench 64, so that the stop block 65 drives the rubber pad 66 to clamp and position the valve seat 69, and the position sensor 67 and the height sensor 68 transmit the identification information back to the control center 5;

[0092] S3: Then adjust the lifting height of the motor chamber 9 so that the grinding head 711 fits the surface of the valve seat 69 and the grinding block 718 fits the inner wall of the valve seat 69, and then start the servo motor 11 to perform intermittent shift rotation, so that the first gravity ball 78 and the second gravity ball 713 can evenly apply force to the extrusion cap 79, so that the grinding can be more precise;

[0093] S4: After the valve seat 69 has been ground once, the motor cavity 9 is rotated so that the oil cavity 83 intermittently sprays the grinding liquid on the surface and inner wall of the valve seat 69. After spraying, the motor cavity 9 is turned over so that the valve seat grinding device grinds the valve seat 69 again.

[0094] like Figures 1 to 11A novel forged steel gate valve universal matching process is shown, the grinding device in S4 also includes a car body 1, a bracket 2 is installed on the top of the car body 1, a guide rail 3 is installed on one side of the bracket 2, a sliding swivel seat 4 is slidably connected to the surface of the guide rail 3, a motor cavity 9 is installed on the surface of the sliding swivel seat 4, a control center 5 is installed on one side of the sliding swivel seat 4, a servo motor 11 is installed inside the motor cavity 9, a drive motor 12 is also installed inside the motor cavity 9, and a rotating ring 10 is installed at the bottom of the car body 1; a clamping and positioning component 6, the clamping and positioning component 6 is installed on the top of the car body 1, and the clamping and positioning component 6 Used to clamp and position the valve seat 69 and feedback the position data of the valve seat 69; a force-controlled grinding component 7, which is installed at the bottom of the motor cavity 9, and grinds the upper and lower surfaces and the inner wall of the valve seat 69 at the same time, and can apply uniform force to the grinding head 711 during grinding; an oil spraying component 8, which is installed at the top of the motor cavity 9, and is used to spray grinding liquid on the ground valve seat 69; the clamping and positioning component 6 is installed at the bottom of the force-controlled grinding component 7, and the force-controlled grinding component 7 is installed at the bottom of the oil spraying component 8.

[0095] As an implementation method in this embodiment, Figures 3 to 6 As shown, the clamping and positioning assembly 6 includes a base 61, which is installed on the top of the vehicle body 1, a stretching rod 62 is inserted inside the base 61, a movable bolt 63 is installed on the top of the base 61, a wrench 64 is installed on the top of the movable bolt 63, a stopper 65 is installed at one end of the stretching rod 62, a rubber pad 66 is installed at the front end of the stopper 65, a height sensor 68 is installed at one end of the base 61, a position sensor 67 is installed on the inner wall of the rotating ring 10, and a valve seat 69 is provided at one end of the rubber pad 66. First, the bottom of the valve seat 69 is placed on the top of the stopper 65, and then the stretching rod 62 on the base 61 is moved toward the valve seat 69 by rotating the movable bolt 63 by pulling the wrench 64. When the stretching rod 62 moves, the stopper 65 It presses against the side wall of the valve seat 69. When the stop block 65 presses against it, the rubber pad 66 installed at the front end of the stop block 65 completely fixes the valve seat 69 to prevent it from shifting. Then the position sensor 67 and the height sensor 68 are started through the control center 5. The position sensor 67 identifies the bottom of the valve seat 69 and determines the position of the bottom of the valve seat 69 and the position sensor 67. At the same time, the height sensor 68 detects the top height of the valve seat 69 at one end of the valve seat 69 to avoid deviation in the grinding thickness during the grinding process, which affects the subsequent welding use. The valve seat 69 is also tested for data to ensure that the data is transmitted to the control center 5 in real time during the grinding process to avoid unevenness.

[0096] As an implementation method in this embodiment, Figures 4 to 9As shown, the force control grinding assembly 7 includes a driving rod 71, a first force control chamber 72 is installed at the bottom of the driving rod 71, a rotating sleeve 75 is installed at the bottom of the first force control chamber 72, a second force control chamber 73 is installed at the bottom of the rotating sleeve 75, a grinding chamber 74 is installed at the bottom of the second force control chamber 73, a step-type shifting groove 76 is installed on the surface of the rotating sleeve 75, a stopper is provided on the surface of the step-type shifting groove 76, a first gravity ball 78 is provided on the top of the step-type shifting groove 76, a piston tube 77 is installed at the bottom of the step-type shifting groove 76, an extrusion cap 79 is installed on the surface of the step-type shifting groove 76, an elastic rod 710 is installed at the bottom of the extrusion cap 79, a grinding head 711 is installed at the bottom of the elastic rod 710, and a pull rope 71 is installed at one end of the first gravity ball 78 2. A conical stop bar 714 is arranged inside the first force control chamber 72, a second gravity ball 713 is arranged on the surface of the conical stop bar 714, one end of the second gravity ball 713 is connected to the pull rope 712, a compression beam 715 is arranged on the top of the rotating sleeve 75, a guide rod 716 is installed inside the piston tube 77, a rotating frame 717 is installed on one end of the guide rod 716, a grinding block 718 is installed on one end of the rotating frame 717, a rack 719 is installed on the bottom of the guide rod 716, a cylindrical gear 720 is meshedly connected on the surface of the rack 719, one end of the cylindrical gear 720 is meshedly connected with an inner and outer toothed plate 721, one end of the inner and outer toothed plate 721 is meshedly connected with a gear 722, one end of the gear 722 is meshedly connected with a toothed transmission plate 723, One end of the gear transmission plate 723 is slidably connected with a slide groove 724. When the driving rod 71 rotates, the first force control chamber 72 starts to rotate, and at the same time drives the rotating sleeve 75 to rotate together. When the rotating sleeve 75 is driven to rotate, the second force control chamber 73 at the bottom of the rotating sleeve 75 also rotates accordingly. When the second force control chamber 73 rotates, the grinding chamber 74 installed at the bottom of the second force control chamber 73 also rotates accordingly. When the grinding chamber 74 rotates, the grinding head 711 at the bottom of the grinding chamber 74 grinds the surface of the valve seat 69. At the same time, when the second force control chamber 73 rotates, the first gravity ball 78 rotates together in the step-type gear slot 76. At this time, the rotation speed is slow. The first gravity ball 78 rotates accordingly at the edge of the step-type gear slot 76. At this time, the extrusion cap 79 The first gravity ball 78 squeezes the compression cap 79, and when the compression cap 79 is squeezed, the elastic rod 710 at the bottom of the compression cap 79 drives the grinding head 711 to descend together. At this time, the grinding head 711 grinds this place. At this time, the second gravity ball 713 squeezes the compression beam 715. When the compression beam 715 is under pressure, the compression beam 715 moves downward in the rotating sleeve 75. When the compression beam 715 moves downward, the guide rod 716 set at the bottom of the compression beam 715 begins to move downward inside the piston tube 77. When the guide rod 716 moves downward, the rotating frame 717 is affected by the rotating seat to flip over. When the rotating frame 717 flips over, the grinding block 718 installed at one end of the rotating frame 717 is close to the inner wall of the valve seat 69 to grind it. At the same time,The movement of the guide rod 716 drives the rack 719 to move. When the rack 719 moves, the cylindrical gear 720 starts to rotate. When the cylindrical gear 720 rotates, the inner and outer toothed plates 721 start to move downward. When the inner and outer toothed plates 721 move downward, the gear 722 at one end of the inner and outer toothed plates 721 starts to rotate. When the gear 722 rotates, the toothed transmission plate 723 drives the grinding head 711 to move upward in the slide groove 724 to grind the bottom of the valve seat 69. Then the servo motor 11 adjusts the drive. At this time, the speed is accelerated, and the second gravity ball 713 is The conical stopper block 714 inside the first force control chamber 72 moves upward to the edge, and after moving to the position of the second stopper, it rotates with the first force control chamber 72. At this time, the second gravity ball 713, due to its heavier weight, drives the pull rope 712 to drive the first gravity ball 78 to move. At this time, the first gravity ball 78 squeezes the second extrusion cap 79. At the same time, the other grinding head 711 applies force to increase the grinding force on the surface of the valve seat 1 69, while the other grinding head 711 has no force applied, and slowly grinds the valve seat 1 69 to ensure uniform force on the surface of the valve seat 1 69.

[0097] As an implementation method in this embodiment, Figure 10 to Figure 11As shown, the oil spraying assembly 8 includes a rotating rod 81, which is mounted at one end of the motor cavity 9, an operating cavity 82 is mounted on the surface of the rotating rod 81, an oil cavity 83 is mounted at the bottom of the operating cavity 82, a spray cavity pipe 84 is mounted at the bottom of the oil cavity 83, a spray head 85 is mounted inside the spray cavity pipe 84, a wedge block rotating seat 86 is mounted at the bottom of the rotating rod 81, a release connecting rod 87 is rotatably connected to the bottom of the wedge block rotating seat 86, a toggle plate 88 is mounted at the bottom of the toggle connecting rod 87, and the toggle plate A stop cap 810 is installed on the top of 88, a piston tamping rod 812 is installed on the bottom of the stop cap 810, a sleeve 89 is sleeved on the surface of the piston tamping rod 812, a spray head 811 is installed on the bottom of the sleeve 89, a pull rod 813 is also installed on the bottom of the wedge swivel 86, a tube cavity 814 is installed at one end of the pull rod 813, and the tube cavity 814 is plugged into the inside of the spray cavity tube 84. When the rotating rod 81 starts to rotate, the rotation of the rotating rod 81 drives the operating cavity 82 and the oil cavity 83 to rotate together. When the oil chamber 83 rotates, the spray chamber pipe 84 installed at the bottom of the oil chamber 83 rotates together. At this time, when the rotating rod 81 rotates, the wedge rotating seat 86 installed at the bottom of the rotating rod 81 rotates synchronously. When the wedge rotating seat 86 rotates, the release connecting rod 87 is driven to move up and down. When the release connecting rod 87 moves up and down, the toggle plate 88 installed at the bottom of the release connecting rod 87 moves with it. When the toggle plate 88 moves, the stop cap 810 on the top of the toggle plate 88 is driven by the toggle plate 88. The piston rod 812 moves up and down when the stop cap 810 moves up and down in the sleeve 89. Since the sleeve 89 is in the oil chamber 83, the internal grinding liquid is squeezed to the spray head 811 and sprayed to the surface of the valve seat 69 through the spray head 811. At this time, due to the rotation of the wedge block swivel 86, the pull rod 813 drives the tube cavity 814 to perform piston movement in the spray cavity tube 84, and the squeezed grinding liquid is sprayed to the inner wall of the valve seat 69 through the spray head 85.

[0098] The working principle of the technical solution provided by the present invention is as follows:

[0099] When using the device, first fix the vehicle body 1, check whether the various components of the grinding device 1 can operate, then move the sliding seat 4 to the middle position on the surface of the middle guide rail 3 on the bracket 2, and after ensuring the normal rotation of the rotating ring 10, open the control center 5 for operation.

[0100] When the grinding device is ready, the clamping and positioning assembly 6 starts to operate. First, the bottom of the valve seat 69 is placed on the top of the stop block 65. Then, the extension rod 62 on the base 61 is moved toward the valve seat 69 by turning the wrench 64 to rotate the movable bolt 63. When the extension rod 62 moves, the stop block 65 abuts against the side wall of the valve seat 69. When the stop block 65 abuts, the rubber pad 66 installed at the front end of the stop block 65 completely fixes the valve seat 69 to prevent deviation. Then, the position sensor 6 is moved through the control center 5. 7 and the height sensor 68 are started, the position sensor 67 identifies the bottom of the valve seat 69, and determines the position of the bottom of the valve seat 69 and the position sensor 67. At the same time, the height sensor 68 detects the top height of the valve seat 69 at one end of the valve seat 69 to avoid deviation in the grinding thickness during the grinding process, which affects the subsequent welding use, and performs data detection on the valve seat 69 to ensure that the data is transmitted to the control center 5 in real time during the grinding process to avoid uneven conditions.

[0101] After the valve seat 69 is installed, the position of the sliding rotating seat 4 is adjusted so that the force control grinding assembly 7 can be close to the valve seat 69, and then the force control grinding assembly 7 is started. At this time, the control center 5 controls the servo motor 11 to rotate in the motor cavity 9 at a step-by-step increasing speed. When the servo motor 11 rotates, the driving rod 71 rotates. When the driving rod 71 rotates, the first force control cavity 72 starts to rotate, and at the same time drives the rotating sleeve 75 to rotate together. When the rotating sleeve 75 is driven to rotate, the second force control cavity 73 at the bottom of the rotating sleeve 75 also rotates. When the second force control cavity 73 rotates, the grinding cavity 74 installed at the bottom of the second force control cavity 73 also rotates at the same time. When the grinding cavity 74 rotates, the grinding cavity 74 at the bottom of the grinding cavity 74 The head 711 grinds the surface of the valve seat 69. At the same time, when the second force control chamber 73 rotates, the first gravity ball 78 rotates together in the step-type gear slot 76. At this time, the rotation speed is slow, and the first gravity ball 78 rotates along at the edge of the step-type gear slot 76. At this time, the extrusion cap 79 is squeezed by the first gravity ball 78. When the extrusion cap 79 is squeezed, the elastic rod 710 at the bottom of the extrusion cap 79 drives the grinding head 711 to drop together. At this time, the grinding head 711 grinds this place. At this time, the second gravity ball 713 squeezes the pressure beam 715. When the pressure beam 715 is under pressure, the pressure beam 715 moves downward in the rotating sleeve 75. When the pressure beam 715 moves downward, the bottom of the pressure beam 715 is set The guide rod 716 starts to move downward inside the piston tube 77. When the guide rod 716 moves downward, the rotating frame 717 is flipped under the influence of the rotating seat. When the rotating frame 717 flips, the grinding block 718 installed at one end of the rotating frame 717 is close to the inner wall of the valve seat 69 to grind it. At the same time, the movement of the guide rod 716 drives the rack 719 to move. When the rack 719 moves, the cylindrical gear 720 starts to rotate. When the cylindrical gear 720 rotates, the inner and outer toothed plates 721 start to move downward. When the inner and outer toothed plates 721 move downward, the gear 722 at one end of the inner and outer toothed plates 721 starts to rotate. When the gear 722 rotates, the toothed transmission plate 723 drives the grinding head 711 in the slide groove 724. The second gravity ball 713 moves upward inside to grind the bottom of the valve seat 69, and then the servo motor 11 adjusts the drive. At this time, the speed increases, and the second gravity ball 713 moves toward the edge of the conical stop block 714 inside the first force control chamber 72. After moving to the position of the second stop block, it rotates with the first force control chamber 72. At this time, the second gravity ball 713, due to its heavier weight, drives the pull rope 712 to drive the first gravity ball 78 to move. At this time, the first gravity ball 78 squeezes the second extrusion cap 79. At the same time, the other grinding head 711 applies force to increase the grinding force on the surface of the valve seat 69, and the other grinding head 711 has no force applied, then slowly grinds the valve seat 69 to ensure uniform force on the surface of the valve seat 69.

[0102] When the valve seat 69 begins to grind, the sliding swivel seat 4 is rotated to flip the oil spray assembly 8, and then the sliding swivel seat 4 is raised and lowered on the guide rail 3 so that the oil spray assembly 8 can descend to the inside of the valve seat 69, and then the drive motor 12 inside the motor cavity 9 is started. When the drive motor 12 is driven, the rotating rod 81 starts to rotate, and the rotation of the rotating rod 81 drives the operating cavity 82 and the oil cavity 83 to rotate together. When the oil cavity 83 rotates, the spray cavity pipe 84 installed at the bottom of the oil cavity 83 rotates together. At this time, when the rotating rod 81 rotates, the wedge swivel seat 86 installed at the bottom of the rotating rod 81 rotates synchronously. When the wedge swivel seat 86 rotates, the release connecting rod 87 is driven to move up and down. When the release connecting rod 87 moves up and down, the toggle plate 88 installed at the bottom of the release connecting rod 87 Following the movement, when the toggle plate 88 moves, the stop cap 810 on the top of the toggle plate 88 is driven by the toggle plate 88 to move up and down. At this time, the up and down movement of the stop cap 810 causes the piston ram 812 to move up and down in the sleeve 89. Since the sleeve 89 is in the oil chamber 83, the internal grinding liquid is squeezed to the spray head 811 and sprayed to the surface of the valve seat 69 through the spray head 811. At this time, due to the rotation of the wedge block swivel seat 86, the pull rod 813 drives the tube cavity 814 to perform piston movement in the spray cavity tube 84, and the squeezed grinding liquid is sprayed to the inner wall of the valve seat 69 through the spray head 85. After the spraying of the grinding liquid is completed, the sliding swivel seat 4 is rotated again to flip the oil spray assembly 8, and then the position of the force control grinding assembly 7 is adjusted, and the valve seat 69 is continuously ground.

[0103] Embodiment 2:

[0104] The present application also provides another technical solution: a novel forged steel gate valve universal matching method, comprising the following steps:

[0105] Processing of valve seat 106:

[0106] S1, turning outer circle and inner hole;

[0107] Blank measurement: measure the structure length and calculate the machining allowance;

[0108] Workpiece clamping: Use the end face and outer circle of valve seat 106 as reference for positioning, lock the three-jaw chuck to clamp valve seat 106, and turn the outer circle and inner hole of valve seat 106 after the workpiece is clamped;

[0109] S2, rough turning the end face;

[0110] Blank measurement: locate with inner hole, and rough turn the end face of the big head to meet the requirements of the drawing;

[0111] Workpiece clamping: Position the valve seat 106 based on the outer circle and end face of the stopper, align the end face of the valve seat 106, and turn the surface of the valve seat 106 to be welded after clamping the workpiece;

[0112] S3, welding sealing surface;

[0113] Blank measurement: measure the groove depth and calculate the surfacing allowance;

[0114] Workpiece clamping: Place the valve seat 106 on the special tooling with the outer circle of the diameter stop as the positioning reference, and align the surface of the valve seat 106 to be welded first;

[0115] S4, fine turning sealing surface:

[0116] Blank measurement: measure the structure length and calculate the machining allowance;

[0117] Workpiece clamping: Position the valve seat 106 based on the outer circle and end face of the stopper, align the end face of the valve seat 106, and turn the surface of the valve seat 106 to be welded after clamping the workpiece;

[0118] S5. Heat treatment:

[0119] Quenching: only the sealing surface area is heated, hardness: 26-34HRC;

[0120] S6. Use grinding device 1 or grinding device 2 and positioning plate device to grind the sealing surface in batches; ensure the grinding angle is 5° and the roughness is consistent, ensure the downward pressure is consistent, control the grinding speed and duration, and add or replace the abrasive regularly;

[0121] Processing of gate 102:

[0122] S7, forging gate plate 102 blank; forging until the outer dimensions meet the requirements of the drawing;

[0123] S8, milling T-slot;

[0124] Blank measurement: measure the structure length and calculate the machining allowance;

[0125] Workpiece clamping: Use a four-jaw chuck to clamp one end of the workpiece, and then milling is performed after the workpiece is clamped;

[0126] S9, rough turning of sealing surface;

[0127] Blank measurement: measure the structure length and calculate the machining allowance;

[0128] Workpiece clamping: Use special tooling to clamp the workpiece, and then turn it;

[0129] S10, dense welding sealing surface: TIG welding;

[0130] Blank measurement: measure the groove depth and calculate the surfacing allowance;

[0131] Workpiece clamping: Place the gate plate 102 horizontally on a special fixture with one side as the reference plane, and weld the other side;

[0132] S11, fine turning sealing surface:

[0133] Blank measurement: measure the structure length and calculate the machining allowance;

[0134] Workpiece clamping: Use special tooling to clamp the workpiece, and then turn it;

[0135] S12, using grinding device 1 or grinding device 2 and positioning plate device, batch grinding sealing surface: ensure grinding angle 5° and roughness, ensure consistent downward pressure, control grinding speed and duration, and add or replace abrasive regularly;

[0136] S13. After the valve seat 106 is assembled to the valve body, the valve plate is assembled with the valve seat 106; the scale line of the valve seat 106 must be vertically upward, and the angles of the two valve seats 106 must be consistent.

[0137] The working principle of the technical solution provided in Example 2 of the present invention is as follows:

[0138] The second grinding device in S6 and S12 also includes a cylindrical grinder hopper 108, a step hole is provided in the middle of the grinder hopper 108, a disc-shaped positioning plate 100 is placed on the step hole, a grinding disc 104 is provided below the step hole, a through hole is provided in the middle of the grinder hopper 108, a central axis is provided in the center of the grinding disc 104, the central axis passes through the through hole in the center of the grinder hopper 108 and is connected to the servo motor 2 110 axis under the grinder hopper 108, a bearing 109 is installed on the lower side of the grinder hopper 108, the bearing 109 is fixed on the bracket 2 112, three evenly distributed power wheels 105 are provided on the outer side of the grinder hopper 108 to contact the outer side of the grinder hopper 108 and drive the grinder hopper 108 to rotate, a plurality of circular holes are provided in the middle of the positioning plate 100, a retaining ring 101 is fixed on the outer side of the top surface of the circular hole, and a retaining ring 101 is fixed on the outer side of the top surface of the circular hole. Three pressing plates 113 are arranged between the positioning plate 100 and the grinder hopper 108 to press and fix the two together. The positioning plate 100 rotates in opposite directions to the grinding disc 104. When grinding, the gate plate 102 is clamped at one end of a cylindrical pressing block 103, and then put into the circular hole in the middle of the positioning plate 100 for grinding. When grinding the valve seat 106, remove the retaining ring 101 on the upper side of the circular hole of the positioning plate 100, and directly put the valve seat 106 into the circular hole in the middle of the positioning plate 100, and put a steel ball 107 on it as a pressing block 103. When grinding, put multiple gate plates 102 into the circular hole of the positioning plate 100, press and grind with the pressing block 103. When the valve seat 106 is, put the valve seat 106 into the circular hole of the positioning plate 100, press with the steel ball 107, start the servo motor 110 and the power wheel 105 to grind until it meets the requirements of the drawing.

[0139] The present invention covers any substitution, modification, equivalent method and scheme made on the essence and scope of the present invention. In order to make the public have a thorough understanding of the present invention, specific details are described in detail in the following preferred embodiments of the present invention, but those skilled in the art can fully understand the present invention without the description of these details. In addition, in order to avoid unnecessary confusion about the essence of the present invention, well-known methods, processes, procedures, components and circuits are not described in detail.

[0140] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principle of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. A new type of forged steel gate valve universal matching process, characterized in that: The following steps are involved: S1: First, weld the valve seat sealing surface, then finish-machine the valve seat sealing surface, then grind the valve seat sealing surface, and finally weld the valve seat to the valve body; S2: When grinding the valve seat sealing surface, first put the valve seat into the grinding device 1, adjust the moving distance of the extension rod by the wrench, so that the stop block drives the rubber pad to clamp and position the valve seat, and the position sensor and height sensor transmit the identification back to the control center; S3: Then adjust the lifting height of the motor cavity so that the grinding head fits the surface of the valve seat. After the grinding block fits the inner wall of the valve seat, start the servo motor to rotate intermittently, so that the first gravity ball and the second gravity ball can evenly apply force to the extrusion cap, so that the grinding can be more precise. S4: After the valve seat has been ground once, the motor cavity is rotated so that the oil cavity intermittently sprays the grinding liquid on the surface and inner wall of the valve seat. After spraying, the motor cavity is turned over to make the grinding device one and grind the valve seat again.

2. The new forged steel gate valve universal matching process according to claim 1 is characterized in that: The grinding device 1 in S4 also includes a vehicle body, a bracket 1 is installed on the top of the vehicle body, a guide rail is installed on one side of the bracket 1, a sliding seat is slidably connected to the surface of the guide rail, a motor cavity is installed on the surface of the sliding seat, a control center is installed on one side of the sliding seat, a servo motor 1 is installed inside the motor cavity, a drive motor is also installed inside the motor cavity, and a rotating ring is installed at the bottom of the vehicle body; A clamping and positioning component, the clamping and positioning component is installed on the top of the vehicle body, and the clamping and positioning component is used to clamp and position the valve seat 1 and feed back the position data of the valve seat 1; A force-controlled grinding assembly, which is installed at the bottom of the motor cavity, and grinds the upper and lower surfaces and the inner wall of the valve seat simultaneously, and can evenly apply force to the grinding head during grinding; An oil spraying assembly, the oil spraying assembly is installed on the top of the motor cavity, and the oil spraying assembly is used to spray grinding liquid on the ground valve seat; The clamping and positioning assembly is installed at the bottom of the force-controlled grinding assembly, and the force-controlled grinding assembly is installed at the bottom of the oil spraying assembly.

3. The new forged steel gate valve universal matching process according to claim 2 is characterized in that: The clamping and positioning assembly comprises a base, which is mounted on the top of the vehicle body, a stretching rod is inserted into the interior of the base, a movable bolt is mounted on the top of the base, and a wrench is mounted on the top of the movable bolt.

4. The novel forged steel gate valve universal matching process according to claim 3 is characterized in that: A stop block is installed at one end of the extension rod, a rubber pad is installed at the front end of the stop block, a height sensor is installed at one end of the base, a position sensor is installed on the inner wall of the rotating ring, and a valve seat is provided at one end of the rubber pad.

5. The novel forged steel gate valve universal matching process according to claim 4 is characterized in that: The force-controlled grinding assembly includes a driving rod, a first force-controlled cavity is installed at the bottom of the driving rod, a rotating sleeve is installed at the bottom of the first force-controlled cavity, a second force-controlled cavity is installed at the bottom of the rotating sleeve, a grinding cavity is installed at the bottom of the second force-controlled cavity, and a stepped gear groove is installed on the surface of the rotating sleeve.

6. The novel forged steel gate valve universal matching process according to claim 5 is characterized in that: A stopper is arranged on the surface of the step-type shift groove, a first gravity ball is arranged on the top of the step-type shift groove, a piston tube is installed at the bottom of the step-type shift groove, an extrusion cap is installed on the surface of the step-type shift groove, an elastic rod is installed at the bottom of the extrusion cap, a grinding head is installed at the bottom of the elastic rod, and a pull rope is installed at one end of the first gravity ball.

7. The novel forged steel gate valve universal matching process according to claim 6 is characterized in that: A conical baffle block is arranged inside the first force control chamber, a second gravity ball is arranged on the surface of the conical baffle block, one end of the second gravity ball is connected to a pull rope, a compression beam is arranged on the top of the rotating sleeve, a guide rod is installed inside the piston tube, a rotating frame is installed at one end of the guide rod, a grinding block is installed at one end of the rotating frame, a rack is installed at the bottom of the guide rod, a cylindrical gear is meshedly connected on the surface of the rack, one end of the cylindrical gear is meshedly connected with an inner and outer toothed plate, one end of the inner and outer toothed plate is meshedly connected with a gear, one end of the gear is meshedly connected with a toothed transmission plate, and one end of the toothed transmission plate is slidably connected with a slide groove.

8. The novel forged steel gate valve universal matching process according to claim 7 is characterized in that: The oil spray assembly includes a rotating rod, which is installed at one end of the motor cavity, an operating cavity is installed on the surface of the rotating rod, an oil cavity is installed at the bottom of the operating cavity, a spray cavity tube is installed at the bottom of the oil cavity, a spray head is installed inside the spray cavity tube, a wedge swivel seat is installed at the bottom of the rotating rod, a release connecting rod is rotatably connected to the bottom of the wedge swivel seat, a toggle plate is installed at the bottom of the release connecting rod, a stop cap is installed at the top of the toggle plate, a piston tamping rod is installed at the bottom of the stop cap, a sleeve is sleeved on the surface of the piston tamping rod, a spray head is installed at the bottom of the sleeve, a pull rod is also installed at the bottom of the wedge swivel seat, a tube cavity is installed at one end of the pull rod, and the tube cavity is inserted into the inside of the spray cavity tube.

9. A new type of forged steel gate valve universal matching method, characterized in that: The following steps are involved: Processing of valve seat 2: S1, turning outer circle and inner hole; Blank measurement: measure the structure length and calculate the machining allowance; Workpiece clamping: Use the second end face and outer circle of the valve seat as reference for positioning, lock the three-jaw chuck to clamp the second valve seat, and turn the outer circle and inner hole of the second valve seat after the workpiece is clamped; S2, rough turning the end face; Blank measurement: locate with inner hole, and rough turn the end face of the big head to meet the requirements of the drawing; Workpiece clamping: Position the second valve seat based on the outer circle and end face of the stopper, align the second end face of the valve seat, clamp the workpiece and turn the second surface of the valve seat to be welded; S3, welding sealing surface; Blank measurement: measure the groove depth and calculate the surfacing allowance; Workpiece clamping: Place the valve seat 2 on the special tooling with the outer circle of the diameter stop as the positioning reference, and align the surface of the valve seat 2 to be welded first; S4, fine turning sealing surface: Blank measurement: measure the structure length and calculate the machining allowance; Workpiece clamping: Position the second valve seat based on the outer circle and end face of the stopper, align the second end face of the valve seat, clamp the workpiece and turn the second surface of the valve seat to be welded; S5. Heat treatment: Quenching: only the sealing surface area is heated, hardness: 26-34HRC; S6. Use the second grinding device and the positioning plate device to grind the sealing surface in batches; ensure the grinding angle is 5° and the roughness is consistent, ensure the downward pressure is consistent, control the grinding speed and duration, and add or replace the abrasive regularly; Processing of gate: S7, forging gate blank; forging until the outer dimensions meet the requirements of the drawing; S8, milling T-slot; Blank measurement: measure the structure length and calculate the machining allowance; Workpiece clamping: Use a four-jaw chuck to clamp one end of the workpiece, and then milling is performed after the workpiece is clamped; S9, rough turning of sealing surface; Blank measurement: measure the structure length and calculate the machining allowance; Workpiece clamping: Use special tooling to clamp the workpiece, and then turn it; S10, dense welding sealing surface: TIG welding; Blank measurement: measure the groove depth and calculate the surfacing allowance; Workpiece clamping: Place the gate plate horizontally on a special fixture with one side as the reference plane, and weld the other side; S11, fine turning sealing surface: Blank measurement: measure the structure length and calculate the machining allowance; Workpiece clamping: Use special tooling to clamp the workpiece, and then turn it; S12. Use grinding device 2 and positioning disc device to batch grind the sealing surface: Ensure the grinding angle is 5° and the roughness is consistent, ensure the downward pressure is consistent, control the grinding speed and duration, and add or replace the abrasive regularly; S13. After the valve seat 2 is assembled to the valve body, the valve plate is assembled with the valve seat 2; the scale line of the valve seat 2 must be vertically upward, and the angles of the two valve seats 2 must be consistent.

10. The novel forged steel gate valve universal matching method according to claim 9 is characterized in that: The grinding device 2 and positioning disk device in S6 and S12 also include a cylindrical grinder hopper, a step hole is provided in the middle of the grinder hopper, a disc-shaped positioning plate is placed on the step hole, a grinding disk is provided below the step hole, a through hole is provided in the middle of the grinder hopper, a central axis is provided in the center of the grinding disk, the central axis passes through the through hole in the center of the grinder hopper and is connected to the motor shaft below the grinder hopper, a plane bearing is installed on the lower side of the grinder hopper, the plane bearing is fixed on the bracket 2, and three The evenly distributed power wheels are in contact with the outside of the grinder hopper and drive the grinder hopper to rotate. A plurality of circular holes are arranged in the middle of the positioning plate, and a retaining ring is fixed on the outside of the top surface of the circular hole. Three pressure plates are arranged between the positioning plate and the grinder hopper to press and fix the two. The positioning plate rotates in opposite directions to the grinding disc. When grinding, the gate plate is clamped at one end of a cylindrical pressure block, and then put into the circular hole in the middle of the positioning plate for grinding. When grinding the valve seat, the retaining ring on the upper side of the circular hole of the positioning plate is removed, and the valve seat is directly put into the circular hole in the middle of the positioning plate, and a steel ball is placed on it as a pressure block.

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