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CN-121988780-A - Sealing surface overlaying device of self-sealing gate valve cover

CN121988780ACN 121988780 ACN121988780 ACN 121988780ACN-121988780-A

Abstract

The invention discloses a sealing surface overlaying device of a self-sealing gate valve cover, relates to the technical field of gate valve sealing surface overlaying, and aims to solve the technical problem that the quality of the sealing surface overlaying of the self-sealing gate valve cover is difficult to ensure. According to the invention, through the integrated design of the first cutter module and the second cutter module, the first cutter module is utilized to turn and mill the surfacing ring groove, the second cutter module is utilized to obliquely extend out, and the turning and milling are used for guiding the liquid metal to flow into the ring groove during surfacing, so that the liquid metal is prevented from accumulating to the edges of two sides of a groove, the generation of air holes and slag inclusion is reduced, the welding liquid in the liquid guiding ring groove is cooled to form an anchoring structure, the integral stripping of a surfacing layer is prevented, and the technical problem that the surfacing quality of a sealing surface of a self-sealing gate valve cover is difficult to ensure is solved.

Inventors

  • CHEN LEI

Assignees

  • 象山鑫佰机械制造有限公司

Dates

Publication Date
20260508
Application Date
20260401

Claims (10)

  1. 1. The utility model provides a sealed face build-up welding device of self-sealing gate valve gap, its characterized in that, including base (1), rotary mechanism (2) has been set firmly in base (1), base (1) top has set firmly bi-axial moving mechanism (3), bi-axial moving mechanism (3) active end has set firmly upright arm module (4), be equipped with lifting module (5) on upright arm module (4), lifting module (5) bottom has set firmly blade holder (6), vertical knife chamber has been seted up to blade holder (6) central point, it is equipped with first cutter module (7) to erect to slide on the knife chamber, first cutter module (7) top with lifting module (5) lift end fixed connection, oblique slide chamber (66) have all been seted up at blade holder (6) both ends, two all slide on oblique slide chamber (66) and be equipped with second cutter module (8), second cutter module (8) with first cutter module (7) are connected through connecting module (9); when the first cutter module (7) completely slides into the vertical cutter cavity, a protection form is formed; When the first cutter module (7) continues to slide upwards, the two second cutter modules (8) can be driven to extend obliquely through the connecting module (9).
  2. 2. The self-sealing gate valve cover sealing surface overlaying device according to claim 1, wherein the rotating end of the rotating mechanism (2) penetrates out of the base (1) and is detachably and fixedly connected with a fixed disc (21), a positioning groove (22) matched with the valve cover is formed in the fixed disc (21), and a plurality of threaded holes (23) are uniformly formed in the top end of the fixed disc (21) at the position corresponding to the peripheral side of the positioning groove (22); The double-axial moving mechanism (3) comprises a Y-axial moving module (31), the Y-axial moving module (31) is fixedly arranged at the top end of the base (1), and an X-axial moving module (33) is fixedly arranged at the movable end of the Y-axial moving module (31).
  3. 3. The self-sealing gate valve cover sealing surface overlaying device according to claim 2, wherein the vertical arm module (4) comprises a mounting seat (41), the mounting seat (41) is fixedly arranged at the movable end of the X-axis moving module (33), a vertical shaft (42) is fixedly arranged at the bottom end of the mounting seat (41), and a vertical chute A (43) is formed at the bottom end of the vertical shaft (42).
  4. 4. The self-sealing type gate valve cover sealing surface overlaying device according to claim 3, wherein the lifting module (5) comprises a motor (51), a rotating shaft (52) and a sliding shaft (54), the motor (51) is fixedly arranged at the top end of the mounting seat (41), the rotating shaft (52) is rotatably arranged at the top end of the vertical shaft (42), the top end of the rotating shaft (52) penetrates out of the mounting seat (41) and is fixedly connected with the output end of the motor (51), the bottom end of the rotating shaft (52) penetrates into the vertical sliding groove A (43) and is fixedly provided with a screw rod (53), the sliding shaft (54) is slidably arranged in the vertical sliding groove A (43), a thread groove (55) is formed in the top end of the sliding shaft (54), and the thread groove (55) is in threaded connection with the screw rod (53).
  5. 5. The self-sealing type gate valve cover sealing surface overlaying device according to claim 4, wherein the tool apron (6) is fixedly arranged at the bottom end of the vertical shaft (42), the vertical tool cavity is formed by connecting a vertical sliding chute B (61) formed by opening at the top end of the tool apron (6) with a vertical sliding chute C (62) formed by opening at the bottom end of the tool apron (6), two ends of the vertical sliding chute B (61) are respectively connected with a horizontal sliding cavity (63), one end of the horizontal sliding cavity (63) away from the vertical sliding chute C (62) is connected with a vertical sliding cavity (64), a linkage cavity is formed by a horizontal sliding cavity (63) and an area between the vertical sliding cavities (64), the inclined sliding cavities (66) are respectively formed by opening inclined sliding chutes (67), one ends of the inclined sliding chutes (67) are respectively far from the vertical sliding cavities (64) are respectively connected with a rotary chute (68), two ends of the rotary chute (68) are respectively fixedly provided with a limiting block (69), and the inclined sliding chutes (67) are respectively formed by the rotary chute (68) and the movable limiting blocks (69).
  6. 6. The self-sealing type gate valve cover sealing surface overlaying device according to claim 5, wherein the first cutter module (7) comprises a connecting body (71), a trapezoid seat (72) and a first milling cutter (74), the connecting body (71) is slidably arranged on the vertical sliding groove B (61), the top end of the connecting body (71) penetrates into the vertical sliding groove A (43) and is fixedly connected with the bottom end of the sliding shaft (54), the trapezoid seat (72) is fixedly arranged at the bottom end of the connecting body (71) and is slidably matched with the vertical sliding groove C (62), the bottom end of the trapezoid seat (72) is provided with a mounting groove A (73), and the first milling cutter (74) is detachably and fixedly connected to the mounting groove A (73) through a bolt unit A.
  7. 7. The self-sealing type gate valve cover sealing surface overlaying device according to claim 6, wherein the second cutter module (8) comprises an inclined sliding seat (81), the inclined sliding seat (81) is slidably arranged on the inclined sliding cavity (66), sliding strips (80) are fixedly arranged at two ends of one side, close to the vertical sliding cavity (64), of the inclined sliding seat (81), an inclined through cavity (82) is formed in the inclined sliding seat (81), and a plurality of cutter units are arranged on the inclined through cavity (82) in a linear equidistant structure.
  8. 8. The seal face surfacing device of a self-sealing gate valve cover according to claim 7, wherein the cutter unit comprises a rotary seat (83) and a second milling cutter (85); The rotary seat (83) is far away from the vertical sliding cavity (64) is provided with a mounting groove B (84), the second milling cutter (85) is detachably and fixedly connected to the mounting groove B (84) through a bolt unit B, shaft bodies (86) connected with the rotary seat (83) in a rotating mode are fixedly arranged at two ends of the rotary seat (83), movable blocks (87) are fixedly arranged at the far ends of the shaft bodies (86) in a penetrating mode, the rotary seat (83) is fixedly provided with movable blocks (87), the movable blocks (87) are movably connected with the movable cavities, two ends of each movable block (87) are in arc-shaped structures, the rotary seat (83) is close to one end of the vertical sliding cavity (64) and provided with tooth grooves (88), gears (89) are connected to the tooth grooves (88) in a meshed mode, and the gears (89) are rotatably connected with the rotary seat (83).
  9. 9. The self-sealing type gate valve cover sealing surface overlaying device according to claim 8, wherein the second milling cutter (85) comprises a connecting portion (851), the connecting portion (851) is detachably and fixedly connected with the mounting groove B (84) through a bolt unit B, one end, far away from the vertical sliding cavity (64), of the connecting portion (851) penetrates out of the mounting groove B (84) and is fixedly provided with a triangular portion a (852), and the top end of the triangular portion a (852) is fixedly provided with a triangular portion B (853).
  10. 10. The self-sealing type gate valve cover sealing surface overlaying device according to claim 8, wherein the connecting module (9) comprises a linkage body (91), the linkage body (91) is movably arranged in the linkage cavity, the linkage body (91) is far away from both ends of one side of the vertical sliding cavity (64) respectively provided with a vertical sliding groove D (92), the vertical sliding groove D (92) is in sliding connection with the sliding strip (80), a vertical movable groove (93) is formed in the bottom of the linkage body (91), an oblique movable groove (94) is formed in the top of the vertical movable groove (93), the vertical movable groove (93) and the oblique movable groove (94) form a guide channel, a movable shaft (95) is movably arranged on the guide channel, the linkage body (91) is close to one end of the vertical sliding cavity (64) respectively provided with a connecting block (97), both ends of the vertical sliding groove D (92) are respectively connected with the movable shaft (95) and the connecting body (71), the bottom of the linkage body (91) is fixedly connected with the bottom of the connecting block (96) respectively provided with a plurality of vertical sliding grooves (98), and the connecting blocks (99) are respectively meshed with the vertical sliding grooves (98).

Description

Sealing surface overlaying device of self-sealing gate valve cover Technical Field The invention relates to the technical field of gate valve sealing surface overlaying, in particular to a sealing surface overlaying device of a self-sealing gate valve cover. Background The self-sealing gate valve is one high pressure valve to realize sealing with medium pressure and is widely used in high temperature and high pressure pipeline of heat power plant, nuclear power plant and petrochemical system. The valve cover is used as a key pressure-bearing member of the self-sealing gate valve, the sealing surface of the valve cover, namely the position of the valve cover which is in direct contact with and matched with the gate plate, is directly subjected to medium pressure and temperature change and abrasion during opening and closing when the valve is closed, and the quality of the valve cover directly influences the sealing performance and the service life of the valve. In order to meet the working condition requirements of high temperature, high pressure, corrosion resistance and scratch resistance, the sealing surface of the valve cover is usually reinforced by adopting a hard alloy overlaying manner. Before surfacing, a groove with a certain shape, also called a surfacing groove, needs to be processed at the sealing surface part of the valve cover so as to contain surfacing metal. At present, the groove shapes commonly adopted in the industry mainly comprise a V-shaped groove and a U-shaped groove, and the V-shaped groove and the U-shaped groove are finished by turning. However, the existing V-shaped or U-shaped groove has the following problems that firstly, liquid metal is accumulated to the edges of two sides of the groove to cause the defect of high two sides and low middle after the formation of a surfacing layer, air holes and slag inclusion are easy to generate at the raised positions of the edges, secondly, the linear expansion coefficient difference of a carbon steel matrix and a cobalt-based surfacing layer is large, the interface generates large shearing stress during cooling, and the bonding interface of the traditional groove and the surfacing layer is only a simple plane or an arc surface, the shearing resistance is completely dependent on metallurgical bonding, cold cracks and integral stripping are easy to cause, and the surfacing quality is difficult to ensure. In view of this, we propose a sealing surface bead welding device of a self-sealing gate valve cover. Disclosure of Invention The invention aims to provide a sealing surface overlaying device of a self-sealing gate valve cover, which aims to solve the technical problem that the quality of the sealing surface overlaying of the self-sealing gate valve cover is difficult to guarantee. In order to solve the technical problems, the technical scheme is that the sealing surface overlaying device of the self-sealing gate valve cover comprises a base, a rotating mechanism is fixedly arranged in the base, a biaxial moving mechanism is fixedly arranged at the top end of the base, a vertical arm module is fixedly arranged at the movable end of the biaxial moving mechanism, a lifting module is arranged on the vertical arm module, a tool holder is fixedly arranged at the bottom end of the lifting module, a vertical tool cavity is arranged at the center of the tool holder, a first tool module is arranged on the vertical tool cavity in a sliding manner, the top end of the first tool module is fixedly connected with the lifting end of the lifting module, oblique sliding cavities are formed at the two ends of the tool holder, second tool modules are arranged on the two oblique sliding cavities in a sliding manner, the second tool modules are connected with the first tool modules through connecting modules, when the first tool modules completely slide into the vertical tool cavity, a protection form is formed, and when the first tool modules continue to slide upwards, the two second tool modules can be driven to obliquely extend through the connecting modules. The rotating end of the rotating mechanism penetrates out of the base and is detachably and fixedly connected with a fixed disc, a positioning groove matched with the valve cover is formed in the fixed disc, a plurality of threaded holes are uniformly formed in the top end of the fixed disc relative to the circumferential side position of the positioning groove, the double-axial moving mechanism comprises a Y-axial moving module, the Y-axial moving module is fixedly arranged at the top end of the base, and an X-axial moving module is fixedly arranged at the movable end of the Y-axial moving module. The vertical arm module comprises a mounting seat, the mounting seat is fixedly arranged at the movable end of the X axial moving module, a vertical shaft is fixedly arranged at the bottom end of the mounting seat, and a vertical sliding groove A is formed in the bottom end of the vertical shaft. The lifting