Hydraulic check valve and valve body welding device thereof

Abstract

The invention relates to the technical field of valves, in particular to a hydraulic check valve and a valve body welding device.The hydraulic check valve comprises a valve shell and connecting flanges welded to the two ends of the valve shell, a buckling groove is formed in the middle of the outer side of the valve shell, and a valve element is detachably installed in the buckling groove through a locking bolt; the valve element can be conveniently and independently taken out for replacement or maintenance in the subsequent operation and maintenance process; the valve body welding device comprises a base table and T-shaped grooves formed in the two ends of the top of the base table, sliding frames are slidably installed in the T-shaped grooves, clamping transposition mechanisms are installed at the top ends of the two sliding frames, inner U-shaped arc frames and outer U-shaped arc frames are arranged on the opposite sides of the two sliding frames, and double-side adjusting mechanisms are installed at the top ends of the two sliding frames. By means of the double-end inner and outer side synchronous welding device, double-end inner and outer side synchronous welding can be conducted on welding seams between a valve shell and connecting flanges at the two ends, and the welding speed is increased.

Description

Technical Field

[0001] The invention relates to the technical field of valves, in particular to a hydraulic check valve and a valve body welding device thereof. Background Art

[0002] Hydraulic check valves are suitable for pump outlet pipes with water as the medium. They are used to avoid and reduce the backflow of the medium in the pipe system and prevent excessive water hammer to protect the pipe system. In the production process of valve products, welding technology is often applied during the molding of the valve body. At present, automatic welding has developed into an advanced manufacturing technology, and automatic welding equipment plays an increasingly important role in the application of various industries.

[0003] The prior art discloses a Chinese patent with publication number CN 118455810A: a check valve housing welding device, and discloses a moving device and an operating device, which completes the welding operation by rotating the check valve housing with a welding gun.

[0004] However, the above-mentioned prior art still has certain defects, that is, during use, only the welds on the outer sides of the two ends of the check valve shell can be welded one by one, and before and after welding, other external auxiliary equipment is required to cooperate with the welding area of ​​the check valve shell to perform corresponding treatment, which is time-consuming and labor-intensive, and the welding efficiency is low. Summary of the invention

[0005] The object of the present invention is to provide a hydraulic check valve and a valve body welding device thereof to solve the problems raised in the above background technology.

[0006] The purpose of the present invention can be achieved through the following technical solutions:

[0007] A hydraulic check valve comprises a valve housing and connecting flanges welded at both ends of the valve housing, a buckling groove is provided in the middle of the outer side of the valve housing, a valve core is detachably installed inside the buckling groove through a locking bolt, and the valve core is composed of an arc cover adapted to the buckling groove and a ring block fixed inside the arc cover;

[0008] Arc grooves are provided at both ends of the inner side of the ring block, and a valve plate is installed at the intersection between the opposite ends of the two arc grooves through a rotating rod. Straight guide grooves are provided in the middle of both sides of the valve plate, and grooves are provided in the middle of one side away from the corresponding arc grooves at both ends of the inner side of the ring block. A swing frame is installed in the two grooves through a rotating rod, a bent rod is fixed in the middle of one end of the two swing frames, and a ball slidably connected to the corresponding straight guide groove is fixed at one end of the two bent rods, and a spring is fixedly connected between the side of the two swing frames away from the valve plate and the corresponding groove.

[0009] The present invention also provides a welding device for welding the valve body of the hydraulic check valve, comprising a base, a bracket is fixedly provided in the middle of the top of the base, and T-slots are provided on both sides of the top of the base located on the bracket, a dual-axis motor 1 is fixedly installed on the bracket, two output shaft ends of the dual-axis motor 1 are fixedly connected with screws with opposite thread directions, and sliding frames threadedly sleeved with corresponding screws are slidably installed inside the two T-slots;

[0010] The top ends of the two sliding frames are both equipped with a clamping and rotating mechanism for driving the connecting flange and the valve housing to rotate synchronously after docking and centering, and the opposite sides of the two sliding frames are provided with an inner U-shaped arc frame and an outer U-shaped arc frame, and the top ends of the two sliding frames are both equipped with a double-sided adjustment mechanism for driving the inner U-shaped arc frame and the outer U-shaped arc frame on the corresponding side to adjust the relative position, and the inner sides of the inner U-shaped arc frame and the outer U-shaped arc frame are both provided with a welding mechanism for welding the gap between the connecting flange and the valve housing;

[0011] A second cylinder is fixedly installed on the top of the bracket, and a supporting frame is fixedly connected to the telescopic end of the second cylinder.

[0012] In a preferred embodiment, the sliding frame includes a sliding seat and an arc-shaped buckle strip, the sliding seat and the arc-shaped buckle strip are fixed with ear plates at both ends of the outer sides, and the sliding seat and the arc-shaped buckle strip are detachably fixed by locking bolts, the arc-shaped buckle strip and the inner side of the sliding seat are provided with semicircular embedding grooves, and a U-shaped embedding groove connected to the corresponding semicircular embedding groove is provided in the middle of the inner side of the sliding seat;

[0013] A clamping block is fixedly provided at the middle of the bottom of the opposite ends of the two ear plates on the arc buckle strip, and a clamping groove is provided at the middle of the opposite ends of the two ear plates on the slide seat.

[0014] In a preferred embodiment, the clamping and transfer mechanism includes a gear ring movably embedded in two semicircular grooves and a gear five arranged in the U-shaped groove and driven by a servo motor, and the gear five is meshed with the gear ring, and a plurality of cylinders one are fixedly installed inside the gear ring, and the telescopic end of each cylinder one is fixedly connected to an L-shaped arc plate.

[0015] In a preferred embodiment, the double-sided adjustment mechanism includes two L-shaped plates fixed on the side of the sliding frame away from the bracket, and a vertical column is fixedly connected between the opposite ends of the two L-shaped plates. The two ends of the vertical column are respectively provided with an internal adjustment component for driving the inner U-shaped arc frame to move and an external adjustment component for driving the outer U-shaped arc frame to move.

[0016] In a preferred embodiment, the inner adjustment component comprises a horizontal groove 1 and a vertical groove 1 which are connected and arranged at the top of the vertical column, a horizontal column 1 is movably penetrated in the horizontal groove 1, a gear 1 driven by a servo motor is rotatably installed in the vertical groove 1, and a tooth groove 1 which meshes with the gear 1 is formed at one end of the bottom of the horizontal column 1 close to the gear 1;

[0017] The end of the horizontal square column away from the gear is provided with a horizontal groove 2 and a vertical groove 2 which are connected to each other. The gear 2 driven by a servo motor is rotatably installed inside the horizontal groove 2. A lifting square column 1 is movably penetrated inside the vertical groove 2. A tooth groove 2 meshing with the gear 2 is provided on one side of the bottom end of the lifting square column. The inner U-shaped arc frame is fixed to the top of the lifting square column 1.

[0018] In a preferred embodiment, the external adjustment component includes a square ring tube fixed on the side of the sliding frame away from the bracket and a horizontal groove three opened at the bottom end of the vertical square column, a horizontal square column two is movably penetrated inside the square ring tube, and one end of the horizontal column two movably penetrates the corresponding sliding frame, a vertical groove three connected to the horizontal groove three is opened on the top of the square ring tube, a gear three driven by a servo motor is rotatably installed inside the horizontal groove three, and a tooth groove three meshing with the gear three is opened on the top of the horizontal column two;

[0019] The end of the horizontal square column two away from the gear three is provided with a horizontal groove four and a vertical groove four which are connected to each other. A gear four driven by a servo motor is rotatably installed inside the horizontal groove four. A lifting square column two is movably penetrated inside the vertical groove four. A tooth groove four meshing with the gear four is provided on one side of the bottom end of the lifting square column two. An external U-shaped arc frame is fixed on the top of the lifting square column two, and the lifting square column one and the lifting square column two are both located on the axial center line of the valve housing.

[0020] In a preferred embodiment, the welding mechanism on the inner side of the outer U-shaped arc frame includes a plurality of partitions fixed inside the outer U-shaped arc frame, each partition having a limiting groove on the top, and the arc track groove formed by the plurality of limiting grooves is concentrically arranged with the outer U-shaped arc frame, and the plurality of partitions divide the inner cavity of the outer U-shaped arc frame into a spraying chamber, a welding chamber and a grinding chamber arranged in sequence, and a driving chamber located at the opposite end of the spraying chamber and the grinding chamber, and the welding chamber is directly opposite to the second lifting square column.

[0021] In a preferred embodiment, the two driving cavities inside the outer U-shaped arc frame are both rotatably mounted with gears six driven by a servo motor, and both ends of the arc track groove composed of a plurality of limiting grooves are movably sleeved with arc racks driven by corresponding gears six;

[0022] A cylinder three and an air distribution cylinder are fixedly arranged inside the spraying chamber inside the outer U-shaped arc frame, a cover frame is fixedly connected to the telescopic end of the cylinder three, a paint spray nozzle is fixedly arranged inside the cover frame, and a paint inlet end of the paint spray nozzle and an air inlet end of the air distribution cylinder are respectively connected to a paint inlet pipe and an air inlet pipe;

[0023] A cylinder four is fixedly installed inside the grinding chamber inside the outer U-shaped arc frame, and the telescopic end of the cylinder four is fixedly connected to an arc bracket, and a grinding roller and a cleaning roller are rotatably installed at both ends of the inner side of the arc bracket through a rotating shaft, and a dust extraction pipe is connected to the lower end of the grinding chamber;

[0024] A laser generator is arranged inside the welding cavity on the inner side of the outer U-shaped arc frame, and a feed adjustment component is arranged between the laser generator and the second lifting square column.

[0025] In a preferred embodiment, the feed adjustment component includes a vertical slot five opened at the top of the lifting square column two and connected to the welding chamber, and a horizontal slot five opened at one side of the lifting square column two and connected to the vertical slot five. A gear seven driven by a servo motor is rotatably installed inside the horizontal slot five. A lifting square column three is movably inserted inside the vertical slot five. A tooth slot five meshing with the gear seven is opened on one side of the lifting square column three. The laser generator is fixedly installed on the top of the lifting square column three.

[0026] Beneficial effects of the present invention:

[0027] 1. The check valve of the present invention adopts a snap-fit ​​modular design for the valve housing and the valve core, which facilitates the rapid removal of the valve core for replacement or maintenance during subsequent operation and maintenance, avoiding the operation of removing the entire valve. The valve core adopts a double-sided reset structure design, which has a faster and more stable reset response speed.

[0028] 2. The welding device of the present invention can perform double-end inner and outer synchronous welding on the weld between the valve housing and the connecting flanges at both ends, thereby improving the welding speed. In addition, in the process of welding the weld, the pretreatment of the surfaces on both sides of the weld, the welding of the weld, the cooling of the weld surface, the removal of welding slag on the weld surface, the painting of the weld surface, and the air drying of the painted surface can be simultaneously completed, thus realizing one machine with multiple uses;

[0029] 3. The present invention can realize synchronous axial clamping and centering between the valve housing and the connecting flanges at both ends, and ensure that the weld remains stable during the welding process;

[0030] 4. The present invention can seal the spray chamber, welding chamber and grinding chamber when not in use and protect the working parts inside them by adding an arc-shaped rack driven by gear 6 on the open side of the U-shaped arc frame. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, for those skilled in the art, other drawings can be obtained based on these drawings without creative work.

[0032] Figure 1 It is a schematic diagram of the overall structure of the hydraulic check valve of the present invention;

[0033] Figure 2 It is an overall exploded schematic diagram of the hydraulic check valve of the present invention;

[0034] Figure 3 It is a schematic cross-sectional view of a valve core of a hydraulic check valve of the present invention;

[0035] Figure 4 It is a schematic diagram of the overall structure of the welding device of the present invention;

[0036] Figure 5 It is a schematic structural diagram of a sliding frame of a welding device of the present invention from a first viewing angle;

[0037] Figure 6 is a schematic structural diagram of the sliding frame of the welding device of the present invention from a second viewing angle;

[0038] Figure 7 It is a schematic diagram of the partial structure of the double-side adjustment mechanism of the welding device of the present invention;

[0039] Figure 8 The present invention Figure 6 A schematic diagram of the structure enlargement of part A;

[0040] Fig. 9 The present invention Figure 5 A schematic diagram of the structure of part B in the middle is enlarged;

[0041] Fig.10 The present invention Figure 5 The enlarged schematic diagram of the structure of part C in the middle;

[0042] Fig.11 It is a schematic diagram of the welding mechanism structure of the welding device of the present invention;

[0043] Fig.12 It is a schematic diagram of the working state structure of the welding device of the present invention.

[0044] The reference numerals in the figure are as follows: 1. valve housing; 2. connecting flange; 3. snap-fit ​​groove; 4. valve core; 41. arc cover; 42. ring block; 43. arc groove; 44. valve plate; 45. groove; 46. deflection frame; 47. bent rod; 48. round ball; 49. straight guide groove; 410. spring; 5. base; 6. double-sided adjustment mechanism; 61. vertical square column; 62. L-shaped plate; 63. square ring tube; 64. horizontal square column one; 65. gear one; 66. tooth groove one; 67. lifting square column one; 68. gear two; 69. tooth groove two; 610. horizontal square column two; 611. gear three; 612. tooth groove three; 613. lifting square column two; 614. gear four; 615. tooth groove four; 7. clamping and shifting mechanism ;71. Gear ring;72. Gear five;73. Cylinder one;74. L-shaped arc plate;8. Inner U-shaped arc frame;9. Outer U-shaped arc frame;10. T-slot;11. Sliding frame;111. Sliding seat;112. Arc buckle strip;113. Ear plate;114. Slot;115. Block;12. Bracket;13. Cylinder two;14. Bracket frame;15. Screw;16. Partition;17. Arc rack;18. Gear six;19. Inlet pipe;20. Air cylinder;21. Cylinder three;22. Cover frame;23. Paint inlet pipe;24. Cylinder four;25. Arc bracket;26. Grinding roller;27. Cleaning roller;28. Dust extraction pipe;29. Lifting square column three;30. Tooth groove five;31. Gear seven. DETAILED DESCRIPTION

[0045] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0046] The hydraulic check valve of the present invention is a component in a liquid pressure system, belongs to a part of a control element in the liquid pressure system, and is used for controlling the on-off of a fluid in the liquid pressure system.

[0047] The hydraulic check valve body welding device of the present invention belongs to a type of intelligent welding system, specifically a part of laser welding equipment in the intelligent welding system, and is used for automatically welding the valve housing and connecting flange of the hydraulic check valve.

[0048] Refer to the instruction manual Figure 1-Figure 3A hydraulic check valve according to an embodiment of the present invention comprises a valve housing 1 and connecting flanges 2 welded at both ends of the valve housing 1, wherein the outer side of the connecting end of the connecting flange 2 and the inner side of the connecting end of the valve housing 1 can be set to an inclined structure to facilitate the rapid completion of the alignment operation in the subsequent assembly process, while ensuring the flatness of the annular surface after the two sides of the weld are butted, a buckling groove 3 is opened in the middle of the outer side of the valve housing 1, and a valve core 4 is detachably installed in the buckling groove 3 through a locking bolt, and the valve core 4 is composed of an arc cover 41 matched with the buckling groove 3 and a ring block 42 fixed on the inner side of the arc cover 41, wherein a handle is fixedly provided on the outer side of the arc cover 41, and a flow direction indication mark is integrally formed on the surface of the arc cover 41, which is convenient for lifting and quick and correct installation;

[0049] Both ends of the inner side of the ring block 42 are provided with arc grooves 43, and a valve plate 44 is installed at the intersection between the opposite ends of the two arc grooves 43 by rotating the rotating rod, wherein the two arc grooves 43 are centrally symmetrically arranged about the center point of the valve housing 1, and the maximum outer diameter of the valve plate 44 is equal to the inner diameter of the ring groove formed by the two arc grooves 43. At the same time, the two arc grooves 43 are set as optimal arcs to ensure that the valve plate 44 can only deflect in a fixed direction during the process of conveying the medium. Straight guide grooves 49 are provided in the middle of both sides of the valve plate 44. The straight guide grooves 49 are provided in the middle of the two sides of the valve plate 44. The radial axial section of the groove 49 is also set as an arc-shaped structure. Grooves 45 are provided in the middle of the two ends of the inner side of the ring block 42 away from the corresponding arc groove 43. The inside of the two grooves 45 is rotatably installed with a swing frame 46. A bent rod 47 is fixed in the middle of one end of the two swing frames 46. One end of the two bent rods 47 is fixed with a ball 48 slidably connected to the inside of the corresponding straight guide groove 49. A spring 410 is fixedly connected between the side of the two swing frames 46 away from the valve plate 44 and the corresponding groove 45.

[0050] It should be noted that the present invention adopts a snap-fit ​​modular design for the valve housing 1 and the valve core 4, which facilitates the rapid removal of the valve core for replacement or maintenance during subsequent operation and maintenance, thereby avoiding the operation of removing the entire valve. In the process of using the valve, when the pressure on the water inlet side is greater than the pressure on the discharge side, the valve plate 44 can be deflected with the rotating rod as the central axis, and the deflected valve plate 44 is used to make the deflection frame 46 on both sides of the valve plate 44 deflect under the cooperation restriction of the ball 48 and the straight guide groove 49, and the spring 410 on the corresponding side is deformed, thereby releasing the cut-off state of the delivery channel. Conversely, when the pressure on the water inlet side is less than the pressure on the discharge side, the valve plate 44 will automatically reset under the action of the restoring force of its double-sided springs 410 to prevent the medium from flowing back.

[0051] Refer to the instruction manual Figure 4 and Fig.12A hydraulic check valve body welding device according to an embodiment of the present invention is used to weld the valve housing 1 and the connecting flange 2 of the hydraulic check valve, comprising a base 5, a bracket 12 is fixedly provided at the middle of the top of the base 5, and T-slots 10 are provided on both sides of the top of the base 5 located at the bracket 12, a dual-axis motor 1 is fixedly installed on the bracket 12, and two output shaft ends of the dual-axis motor 1 are fixedly connected with screws 15 with opposite thread directions, and sliding frames 11 threadedly sleeved with the corresponding screws are slidably installed inside the two T-slots 10;

[0052] The tops of the two sliding frames 11 are both equipped with a clamping and shifting mechanism 7 for driving the connecting flange 2 and the valve housing 1 to rotate synchronously after docking and centering, and the opposite sides of the two sliding frames 11 are both provided with an inner U-shaped arc frame 8 and an outer U-shaped arc frame 9. The tops of the two sliding frames 11 are both equipped with a double-side adjustment mechanism 6 for driving the inner U-shaped arc frame 8 and the outer U-shaped arc frame 9 on the corresponding sides to adjust the relative position, and the inner sides of the inner U-shaped arc frame 8 and the outer U-shaped arc frame 9 are both provided with a welding mechanism for welding the gap between the connecting flange 2 and the valve housing 1;

[0053] A second cylinder 13 is fixedly mounted on the top of the support seat 12 , and a support frame 14 for supporting the valve housing 1 is fixedly connected to the telescopic end of the second cylinder 13 .

[0054] It should be noted that the present invention utilizes a dual-axis motor to drive the screw 15 to rotate, thereby driving the two sliding frames 11 to approach each other, so that the connecting flange 2 clamped by the two clamping and shifting mechanisms 7 approaches the valve housing 1 supported by the support frame 14, and after the two connecting flanges 2 are pressed against the two ends of the valve housing 1, the corresponding U-shaped arc frame 8 and the outer U-shaped arc frame 9 are driven by the double-sided adjustment mechanism 6 to be tightly attached to the gap position where the connecting flange 2 and the valve housing 1 are connected, and then the connecting flange 2 and the valve housing 1 are driven to rotate synchronously under the action of the clamping and shifting mechanism 7, and the welding mechanism is cooperated to complete the welding action.

[0055] Specifically, Figure 4-Figure 5 and Fig.10 As shown, the sliding frame 11 includes a sliding seat 111 and an arc buckle strip 112, and ear plates 113 are fixedly provided at both ends of the outer sides of the sliding seat 111 and the arc buckle strip 112, and the sliding seat 111 and the arc buckle strip 112 are detachably fixed by locking bolts, and semicircular embedding grooves are provided on the inner sides of the arc buckle strip 112 and the sliding seat 111, and a U-shaped embedding groove connected to the corresponding semicircular embedding groove is provided in the middle of the inner side of the sliding seat 111;

[0056] A Y-shaped block 115 is fixedly provided at the middle of the bottom of the two ear plates 113 on the arc buckle strip 112, and a slot 114 is provided at the middle of the two ear plates 113 on the slide seat 111. The bottom ends of the two blocks 115 on the opposite sides are arranged as inclined surfaces, and the top ends of the two slots 114 on the opposite sides are also arranged as inclined surfaces, so that automatic positioning can be achieved during the assembly of the sliding frame 11, thereby improving the speed of assembling the sliding frame 11.

[0057] The clamping and transfer mechanism 7 includes a gear ring 71 movably embedded in two semicircular grooves and a gear 5 72 arranged in the U-shaped groove and driven by a servo motor, and the gear 5 72 is meshed with the gear ring 71. A plurality of cylinders 73 are fixedly installed inside the gear ring 71, and the telescopic end of each cylinder 73 is fixedly connected to an L-shaped arc plate 74.

[0058] It should be noted that, in the process of assembling the clamping and indexing mechanism 7, the gear ring 71 is placed inside the semicircular embedded groove on the inner side of the slide 111, and the gear ring 71 is meshed with the gear 5 72 inside the U-shaped embedded groove on the slide 111, and then, under the cooperation restriction of the clamping groove 114 and the clamping block 115, the arc buckle strip 112 is quickly buckled on the top of the slide 111, so that the gear ring 71 is restricted inside the embedded ring surrounded by the two semicircular embedded grooves;

[0059] In the process of starting the clamping and shifting mechanism 7, the connecting flange 2 to be welded is placed in the cavity surrounded by multiple L-shaped arc plates 74, and the corresponding L-shaped arc plate 74 is pushed toward the connecting flange 2 by the cylinder 1 73, so as to realize radial clamping and centering of the connecting flange 2 to be welded. Then, with the synchronous movement of the two sliding frames 11 toward each other, the connecting flange 2 to be welded and the valve housing 1 are axially clamped and centered. After completing the clamping and centering between the flange 2 to be connected and the valve housing 1, the corresponding U-shaped arc frame 8 and the outer U-shaped arc frame 9 are driven by the bilateral adjustment mechanism 6 to be tightly attached to the gap position where the connecting flange 2 and the valve housing 1 are docked, and the rotating gear 5 72 is used to drive the gear ring 71 to rotate, and drive the connecting flange 2 and the valve housing 1 that have completed the clamping and centering to rotate synchronously, and the welding mechanism inside the inner U-shaped arc frame 8 and the outer U-shaped arc frame 9 is used to synchronously complete the welding of the inner and outer welds of the double ends of the valve body.

[0060] Specifically, Figure 4-Figure 9 As shown, the double-sided adjustment mechanism 6 includes two L-shaped plates 62 fixed to the side of the sliding frame 11 away from the bracket 12, and a vertical column 61 is fixedly connected between the opposite ends of the two L-shaped plates 62. The two ends of the vertical column 61 are respectively provided with an inner adjustment component for driving the inner U-shaped arc frame 8 to move and an outer adjustment component for driving the outer U-shaped arc frame 9 to move;

[0061] The inner adjustment component includes a horizontal slot 1 and a vertical slot 1 which are connected and arranged at the top of the vertical column 61. A horizontal column 1 64 is movably penetrated in the horizontal slot 1. A gear 1 65 driven by a servo motor is rotatably installed in the vertical slot 1. A tooth groove 1 66 which meshes with the gear 1 65 is formed at one end of the bottom of the horizontal column 1 64 near the gear 1 65.

[0062] A horizontal groove 2 and a vertical groove 2 are connected and arranged at one end of the horizontal square column 1 64 away from the gear 1 65. A gear 2 68 driven by a servo motor is rotatably installed inside the horizontal groove 2. A lifting square column 1 67 is movably penetrated inside the vertical groove 2. A tooth groove 2 69 meshing with the gear 2 68 is formed on one side of the bottom end of the lifting square column 1 67. An inner U-shaped arc frame 8 is fixed on the top of the lifting square column 1 67.

[0063] The external adjustment component includes a square ring tube 63 fixed on the side of the sliding frame 11 away from the bracket 12 and a horizontal groove three opened at the bottom end of the vertical square column 61. A horizontal square column two 610 is movably penetrated inside the square ring tube 63, and one end of the horizontal column two 610 movably penetrates the corresponding sliding frame 11. A vertical groove three connected to the horizontal groove three is opened on the top of the square ring tube 63. A gear three 611 driven by a servo motor is rotatably installed inside the horizontal groove three. A tooth groove three 612 meshing with the gear three 611 is opened on the top of the horizontal column two 610.

[0064] A horizontal groove four and a vertical groove four are connected to each other at one end of the horizontal square column two 610 away from the gear three 611, and a gear four 614 driven to rotate by a servo motor is rotatably installed inside the horizontal groove four, and a lifting square column two 613 is movably penetrated inside the vertical groove four, and a tooth groove four 615 meshing with the gear four 614 is provided on one side of the bottom end of the lifting square column two 613, and an external U-shaped arc frame 9 is fixed on the top of the lifting square column two 613, and the lifting square column one 67 and the lifting square column two 613 are both located on the axial center line of the valve housing 1.

[0065] It should be noted that, in the process of adjusting the position of the inner U-shaped arc frame 8, after the axial clamping and centering of the connecting flange 2 and the valve housing 1 are completed, the horizontal square column 1 64 is first driven by the rotating gear 1 65 to extend into the inner weld of the valve body to be welded, and then the lifting square column 1 67 is driven by the rotating gear 2 68 to move upward, so that the inner U-shaped arc frame 8 is closely attached to the inner side of the docking area where the weld is located, and the welding mechanism inside the inner U-shaped arc frame 8 is directly opposite to the inner weld;

[0066] In the process of adjusting the position of the outer U-shaped arc frame 9, after the axial clamping and centering of the connecting flange 2 and the valve housing 1 are completed, the horizontal square column 2 610 is first driven to move to the outer weld of the valve body to be welded by the rotating gear 3 611, and then the lifting square column 2 613 is driven to move upward by the rotating gear 4 614, so that the outer U-shaped arc frame 9 is closely attached to the inner side of the docking area where the weld is located, and the welding mechanism inside the outer U-shaped arc frame 9 is directly facing the outer weld;

[0067] After the position adjustment of the inner U-shaped arc frame 8 and the outer U-shaped arc frame 9 is completed, the rotating gear 5 72 is used to drive the ring gear 71 to rotate, and drive the connecting flange 2 and the valve housing 1 that have completed the clamping and centering to cooperate with the welding mechanism to complete the welding of the valve body during the synchronous rotation. Conversely, after the welding is completed, the inner U-shaped arc frame 8 and the outer U-shaped arc frame 9 can be driven away from the corresponding welding positions, and the valve body can be removed.

[0068] Specifically, Fig.11 As shown, the welding mechanism on the inner side of the outer U-shaped arc frame 9 includes a plurality of partitions 16 fixed inside the outer U-shaped arc frame 9, each partition 16 has a limiting groove at the top, and the arc track groove composed of the plurality of limiting grooves is concentrically arranged with the outer U-shaped arc frame 9, and the plurality of partitions 16 divide the inner cavity of the outer U-shaped arc frame 9 into a spraying cavity, a welding cavity and a grinding cavity arranged in sequence, and a driving cavity located at the opposite end of the spraying cavity and the grinding cavity, and the welding cavity is directly opposite to the lifting square column 2 613;

[0069] Gears 6 18 driven by servo motors are rotatably mounted inside the two driving chambers inside the outer U-shaped arc frame 9, and arc racks 17 driven by corresponding gears 6 18 are movably sleeved at both ends of the arc track groove composed of multiple limiting grooves, and a thin film pressure sensor is provided at one end of one arc rack 17 close to another arc rack 17 to control excessive extrusion during the process of the two arc racks 17 moving toward each other;

[0070] A cylinder 3 21 and an air distribution cylinder 20 are fixedly provided inside the spray chamber on the inner side of the outer U-shaped arc frame 9, and a cover frame 22 is fixedly connected to the telescopic end of the cylinder 3 21, wherein an inner groove corresponding to the paint spraying surface is provided in the middle of the cover frame 22 to prevent the cover frame 22 from scratching the paint spraying surface when the welding surface is in contact with the cover frame 22 and moving. A paint spray nozzle is fixedly provided inside the cover frame 22, and the paint inlet end of the paint spray nozzle is connected to the air inlet end of the air distribution cylinder 20, and a paint inlet pipe 23 and an air inlet pipe 19 are respectively provided, wherein a plurality of groups of air outlet slots are provided on the outer side of the air distribution cylinder 20, and the plurality of groups of air outlet slots are all inclinedly arranged, and the air outlet angles of the plurality of groups of air outlet slots are successively reduced in the clockwise direction of the air distribution cylinder 20, so as to expand the wind receiving area of ​​the paint spraying surface and improve the drying effect of the paint;

[0071] A cylinder 24 is fixedly installed inside the grinding chamber inside the outer U-shaped arc frame 9, and an arc bracket 25 is fixedly connected to the telescopic end of the cylinder 24. A grinding roller 26 and a cleaning roller 27 are respectively installed at the two ends of the inner side of the arc bracket 25 through a rotating shaft. Among them, a double-axis motor 2 is installed at the bottom end of the arc bracket 25, and the two main shafts connected to the output shaft ends of the double-axis motor 2 are fixedly sleeved with driving wheels, and the conversion ends on the grinding roller 26 and the cleaning roller 27 are fixedly sleeved with driven wheels, and the driving wheel and the two driven wheels on the corresponding side are connected by belt transmission. The lower end of the grinding chamber is connected to a dust extraction pipe 28;

[0072] A laser generator is arranged inside the welding cavity on the inner side of the outer U-shaped arc frame 9, and a feed adjustment component is arranged between the laser generator and the second lifting square column 613.

[0073] It should be noted that the area division inside the inner U-shaped arc frame 8 is the same as the area division inside the outer U-shaped arc frame 9, and the working parts inside thereof are oriented in the same direction as the corresponding U-shaped arc frame (generally referring to the inner U-shaped arc frame 8 and the outer U-shaped arc frame 9, the same below) (the structural schematic diagram inside the inner U-shaped arc frame 8 is not specifically given in the drawings of the specification), wherein, in the process of welding the weld between the connecting flange 2 and the valve housing 1, the gear six 18 inside the driving cavity is first rotated to make the two arc-shaped racks 17 move away from each other, exposing the working parts inside the spraying cavity, welding cavity and grinding cavity inside the U-shaped arc frame, and the specific welding actions of these working parts include the following two rounds of processes:

[0074] In the first process, when the rotating gear 5 72 is used to drive the gear ring 71 to rotate, and the connecting flange 2 and the valve housing 1 that have completed the clamping and centering are driven to rotate synchronously, the cylinder 4 24 inside the grinding chamber will push the arc bracket 25 to rise until the grinding roller 26 and the cleaning roller 27 are both in contact with the surfaces on both sides of the weld, and the grinding roller 26 and the cleaning roller 27 inside the grinding chamber are controlled to keep rotating at a high speed, and the rotating grinding roller 26 is used to remove the oxide layer and debris on both sides of the weld, and the rotating cleaning roller 27 is used to remove the grinding debris remaining on the surface of both sides of the weld, and the dust extraction pipe 28 is used to extract it for centralized treatment, and the laser generator inside the welding chamber is started to perform welding when it contacts the area where the surface oxide layer and debris are cleaned, while the paint nozzle inside the spray chamber does not spray paint, and only blows air at the air outlet slot of the air distribution cylinder 20. In this process, the pretreatment of the surfaces on both sides of the weld, the welding of the weld and the cooling of the welding surface can be completed synchronously;

[0075] In the second process, when the rotating gear 5 72 is used to drive the gear ring 71 to rotate, and the connection flange 2 and the valve housing 1 that have completed the clamping and centering are driven to rotate synchronously, the cylinder 4 24 inside the grinding chamber will push the arc bracket 25 to rise until the grinding roller 26 and the cleaning roller 27 are both in contact with the surfaces on both sides of the weld, and the grinding roller 26 and the cleaning roller 27 inside the grinding chamber are controlled to keep rotating at a high speed, and the rotating grinding roller 26 is used to remove the welding slag on the surface of the weld to make the weld surface smooth, and the rotating cleaning roller 27 is used to remove the residual slag on the surface of both sides of the weld. The grinding chips on the surface are extracted by the dust extraction pipe 28 for centralized treatment. During this period, the laser generator inside the welding chamber does not perform welding action, and the cover frame 22 inside the spraying chamber moves in contact with the welding surface under the push of the cylinder three 21 to prevent the paint from splashing everywhere, while ensuring the neatness of the painted surface and controlling the paint nozzle inside the spraying chamber to spray paint. At the same time, air is blown at the air outlet slot of the air distribution cylinder 20 to dry the painted surface. In this process, the removal of welding slag on the welding surface, the painting of the welding surface and the air drying of the painted surface can be completed simultaneously.

[0076] Specifically, Fig.11 As shown, the feed adjustment component includes a vertical slot five opened at the top of the lifting square column two 613 and connected to the welding chamber, and a horizontal slot five opened at one side of the lifting square column two 613 and connected to the vertical slot five, a gear seven 31 driven by a servo motor is rotatably installed inside the horizontal slot five, a lifting square column three 29 is movably inserted inside the vertical slot five, a tooth slot five 30 meshing with the gear seven 31 is opened on one side of the lifting square column three 29, and a laser generator is fixedly installed on the top of the lifting square column three 29.

[0077] It should be noted that, during the welding process, the rotating gear seven 31 can be used to drive the lifting square column three 29 to move up and down, so as to adjust the distance between the laser generator and the weld according to the material properties of the valve body to ensure the welding quality.

[0078] In the above technical scheme, the dual-axis motor mentioned is a YSK series dual-axis motor, and the specific selection is made according to actual usage; the cylinder mentioned is a single-acting cylinder of model DSA25N200; the servo motor mentioned is a SDDM-110SZ series servo motor, and the specific selection is made according to actual usage; the laser generator mentioned is a fiber laser or a Disk solid-state laser; the thin film pressure sensor mentioned is a chip differential pressure sensor of model FSR-A406.

[0079] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments, and the above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, and these changes and improvements all fall within the scope of the present invention to be protected.

Claims

1. A hydraulic check valve, comprising a valve housing (1) and connecting flanges (2) welded to both ends of the valve housing (1), characterized in that: A buckling groove (3) is provided in the middle of the outer side of the valve housing (1), a valve core (4) is detachably mounted inside the buckling groove (3) via a locking bolt, and the valve core (4) is composed of an arc cover (41) matched with the buckling groove (3) and a ring block (42) fixed on the inner side of the arc cover (41); Arc grooves (43) are provided at both ends of the inner side of the ring block (42); a valve plate (44) is installed at the intersection between the opposite ends of the two arc grooves (43) by rotating a rotating rod; straight guide grooves (49) are provided in the middle of both sides of the valve plate (44); grooves (45) are provided in the middle of the side away from the corresponding arc groove (43) at both ends of the inner side of the ring block (42); a swing frame (46) is installed in the inside of the two grooves (45) by rotating a rotating rod; a bent rod (47) is fixed in the middle of one end of the two swing frames (46); a round ball (48) slidably connected to the inside of the corresponding straight guide groove (49) is fixed at one end of the two bent rods (47); a spring (410) is fixedly connected between the side of the two swing frames (46) away from the valve plate (44) and the corresponding groove (45).

2. A welding device for a hydraulic check valve body, which is used to weld the valve housing (1) and the connecting flange (2) of the hydraulic check valve as claimed in claim 1, characterized in that: The invention comprises a base (5), a bracket (12) is fixedly provided at the middle of the top of the base (5), and T-slots (10) are provided on both sides of the top of the base (5) located at the bracket (12), a dual-axis motor (1) is fixedly installed on the bracket (12), two output shaft ends of the dual-axis motor (1) are fixedly connected with screws (15) with opposite thread directions, and sliding frames (11) are slidably installed inside the two T-slots (10) and are threadedly sleeved with the corresponding screws; The top ends of the two sliding frames (11) are both provided with a clamping and shifting mechanism (7) for driving the connecting flange (2) and the valve housing (1) to rotate synchronously after docking and centering, and the opposite sides of the two sliding frames (11) are both provided with an inner U-shaped arc frame (8) and an outer U-shaped arc frame (9), and the top ends of the two sliding frames (11) are both provided with a double-sided adjustment mechanism (6) for driving the inner U-shaped arc frame (8) and the outer U-shaped arc frame (9) on the corresponding sides to adjust the relative position, and the inner sides of the inner U-shaped arc frame (8) and the outer U-shaped arc frame (9) are both provided with a welding mechanism for welding the gap between the connecting flange (2) and the valve housing (1); A second cylinder (13) is fixedly mounted on the top of the support seat (12), and a support frame (14) is fixedly connected to the telescopic end of the second cylinder (13).

3. A hydraulic check valve body welding device according to claim 2, characterized in that: The sliding frame (11) comprises a sliding seat (111) and an arc-shaped buckle strip (112), ear plates (113) are fixedly provided at both ends of the outer sides of the sliding seat (111) and the arc-shaped buckle strip (112), and the sliding seat (111) and the arc-shaped buckle strip (112) are detachably fixed by locking bolts, semicircular embedding grooves are provided on the inner sides of the arc-shaped buckle strip (112) and the sliding seat (111), and a U-shaped embedding groove connected to the corresponding semicircular embedding groove is provided in the middle of the inner side of the sliding seat (111); A clamping block (115) is fixedly provided at the middle of the bottom of the two ear plates (113) on the arc buckle strip (112) at the opposite ends, and a clamping groove (114) is provided at the middle of the two ear plates (113) on the slide seat (111) at the opposite ends.

4. A hydraulic check valve body welding device according to claim 3, characterized in that: The clamping and transfer mechanism (7) comprises a gear ring (71) movably embedded in two semicircular embedding grooves and a gear five (72) arranged in the U-shaped embedding groove and driven by a servo motor, and the gear five (72) is meshed with the gear ring (71), and a plurality of cylinders (73) are fixedly installed inside the gear ring (71), and the telescopic end of each cylinder (73) is fixedly connected to an L-shaped arc plate (74).

5. A hydraulic check valve body welding device according to claim 2, characterized in that: The double-sided adjustment mechanism (6) comprises two L-shaped plates (62) fixed to a side of the sliding frame (11) away from the bracket (12), a vertical column (61) being fixedly connected between opposite ends of the two L-shaped plates (62), and an inner adjustment component for driving the inner U-shaped arc frame (8) to move and an outer adjustment component for driving the outer U-shaped arc frame (9) to move are respectively provided at both ends of the vertical column (61).

6. A hydraulic check valve body welding device according to claim 5, characterized in that: The inner adjustment component comprises a horizontal groove 1 and a vertical groove 1 which are connected and arranged at the top of the vertical column (61); a horizontal column 1 (64) is movably arranged inside the horizontal groove 1; a gear 1 (65) driven by a servo motor is rotatably installed inside the vertical groove 1; and a tooth groove 1 (66) meshing with the gear 1 (65) is arranged at one end of the bottom of the horizontal column 1 (64) close to the gear 1 (65); The end of the horizontal square column (64) away from the gear (65) is provided with a horizontal groove (2) and a vertical groove (2) which are connected to each other. A gear (68) driven by a servo motor is rotatably installed inside the horizontal groove (2). A lifting square column (67) is movably penetrated inside the vertical groove (2). A tooth groove (69) meshing with the gear (68) is provided on one side of the bottom end of the lifting square column (67). The inner U-shaped arc frame (8) is fixed on the top of the lifting square column (67).

7. A hydraulic check valve body welding device according to claim 6, characterized in that: The external adjustment component comprises a square ring tube (63) fixed on a side of the sliding frame (11) away from the bracket (12) and a transverse groove three opened at the bottom end of the vertical square column (61); a transverse square column two (610) is movably penetrated inside the square ring tube (63), and one end of the transverse square column two (610) movably penetrates the corresponding sliding frame (11); a vertical groove three connected to the transverse groove three is opened on the top of the square ring tube (63); a gear three (611) driven to rotate by a servo motor is rotatably installed inside the transverse groove three; and a tooth groove three (612) meshing with the gear three (611) is opened on the top of the transverse square column two (610); The end of the horizontal square column 2 (610) away from the gear 3 (611) is provided with a horizontal groove 4 and a vertical groove 4 which are connected to each other. A gear 4 (614) driven to rotate by a servo motor is rotatably installed inside the horizontal groove 4. A lifting square column 2 (613) is movably penetrated inside the vertical groove 4. A tooth groove 4 (615) meshing with the gear 4 (614) is provided on one side of the bottom end of the lifting square column 2 (613). An external U-shaped arc frame (9) is fixed on the top of the lifting square column 2 (613), and the lifting square column 1 (67) and the lifting square column 2 (613) are both located on the axis line of the valve housing (1).

8. A hydraulic check valve body welding device according to claim 7, characterized in that: The welding mechanism on the inner side of the outer U-shaped arc frame (9) includes a plurality of partitions (16) fixed inside the outer U-shaped arc frame (9), each partition (16) having a limiting groove at the top end, and the arc track groove formed by the plurality of limiting grooves is arranged concentrically with the outer U-shaped arc frame (9), and the plurality of partitions (16) divide the inner cavity of the outer U-shaped arc frame (9) into a spraying cavity, a welding cavity and a grinding cavity which are arranged in sequence, and a driving cavity located at the opposite end of the spraying cavity and the grinding cavity, and the welding cavity is directly opposite to the second lifting square column (613).

9. A hydraulic check valve body welding device according to claim 8, characterized in that: Gears six (18) driven by a servo motor are rotatably mounted inside the two driving chambers inside the outer U-shaped arc frame (9), and arc racks (17) driven by corresponding gears six (18) are movably sleeved at both ends of the arc track groove composed of a plurality of limiting grooves; A cylinder three (21) and an air distribution cylinder (20) are fixedly arranged inside the spraying chamber inside the outer U-shaped arc frame (9); the telescopic end of the cylinder three (21) is fixedly connected to a cover frame (22); a paint spray nozzle is fixedly arranged inside the cover frame (22); the paint inlet end of the paint spray nozzle and the air inlet end of the air distribution cylinder (20) are respectively connected to a paint inlet pipe (23) and an air inlet pipe (19); A cylinder four (24) is fixedly installed inside the grinding chamber inside the outer U-shaped arc frame (9), and the telescopic end of the cylinder four (24) is fixedly connected to an arc bracket (25), and a grinding roller (26) and a cleaning roller (27) are rotatably installed at the two ends of the inner side of the arc bracket (25) respectively through a rotating shaft, and the lower end inside the grinding chamber is connected to a dust extraction pipe (28); A laser generator is provided inside the welding cavity on the inner side of the outer U-shaped arc frame (9), and a feed adjustment component is provided between the laser generator and the second lifting square column (613).

10. A hydraulic check valve body welding device according to claim 9, characterized in that: The feed adjustment component comprises a vertical slot five which is opened at the top of the lifting square column two (613) and communicated with the welding chamber, and a horizontal slot five which is opened at one side of the lifting square column two (613) and communicated with the vertical slot five. A gear seven (31) driven to rotate by a servo motor is rotatably installed inside the horizontal slot five. A lifting square column three (29) is movably inserted inside the vertical slot five. A tooth slot five (30) which meshes with the gear seven (31) is opened at one side of the lifting square column three (29). The laser generator is fixedly installed at the top of the lifting square column three (29).

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